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[PATCH v3 OLK-5.10 0/2] spraid: support Ramaxel raid controller
by Yanling Song 24 Sep '21

24 Sep '21

Support Ramaxel raid controller Changes since v2: - Improve IO error handling - Add new functions to get controller's information: firmware version, the ability of chip - Support pass through command of admin Changes since v1: - Add "OLK-5.10" to subject - Add commit header into commit message - Add CONFIG_RAMAXEL_SPRAID in defconfig Yanling Song (2): spraid: support Ramaxel raid controller spraid: Add CONFIG_RAMAXEL_SPRAID in defconfig of arch arm64 and x86 arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + drivers/scsi/Kconfig | 1 + drivers/scsi/Makefile | 1 + drivers/scsi/spraid/Kconfig | 11 + drivers/scsi/spraid/Makefile | 7 + drivers/scsi/spraid/spraid.h | 655 +++++ drivers/scsi/spraid/spraid_main.c | 3616 ++++++++++++++++++++++++ 8 files changed, 4293 insertions(+) create mode 100644 drivers/scsi/spraid/Kconfig create mode 100644 drivers/scsi/spraid/Makefile create mode 100644 drivers/scsi/spraid/spraid.h create mode 100644 drivers/scsi/spraid/spraid_main.c -- 2.17.1

1 2

[PATCH openEuler-1.0-LTS] pid: fix return value when copy_process() failed
by Yang Yingliang 24 Sep '21

24 Sep '21

hulk inclusion category: bugfix bugzilla: 182255 CVE: NA ------------------------------------------------- When allocating futex_exit_mutex fails in copy_process(), it needs return an error code, or it will lead a null-ptr-deref when it's used in get_task_pid(). Fixes: 04d0e96b230ac ("futex: sched: fix kabi broken in task_struct") Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> Reviewed-by: Cheng Jian <cj.chengjian(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- kernel/fork.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/fork.c b/kernel/fork.c index b4fee9799c153..adc8fc99246fb 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2000,8 +2000,10 @@ static __latent_entropy struct task_struct *copy_process( #endif futex_init_task(p); p->futex_exit_mutex = kmalloc(sizeof(struct mutex), GFP_KERNEL); - if (!p->futex_exit_mutex) + if (!p->futex_exit_mutex) { + retval = -ENOMEM; goto bad_fork_free_pid; + } mutex_init(p->futex_exit_mutex); /* -- 2.25.1

1 0

[PATCH openEuler-1.0-LTS] block: fix NULL pointer in blkcg_drain_queue()
by Yang Yingliang 24 Sep '21

24 Sep '21

From: Laibin Qiu <qiulaibin(a)huawei.com> hulk inclusion category: bugfix bugzilla: 182135 CVE: NA ------------------------------------------------- blkcg_init_queue blk_iolatency_init blk_mq_freeze_queue blk_throtl_drain <- blk_throtl will be initialized later, so q->td is NULL and trigger this NULL pointer BUG. blk_throtl_init The following is the log of the problem. ------------[ cut here ]------------ [ 8.516269] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 [ 8.516296] RIP: 0010:blk_throtl_drain+0x142/0x760 [ 8.520477] Call Trace: [ 8.520477] blkcg_drain_queue+0x90/0x120 [ 8.520477] __blk_drain_queue+0x18a/0x760 [ 8.520477] blk_drain_queue+0x45/0x80 [ 8.520477] blk_freeze_queue+0x58/0x70 [ 8.520477] blk_iolatency_init+0xdc/0x3e7 [ 8.520477] blkcg_init_queue+0x214/0x5e0 [ 8.520477] blk_alloc_queue_node+0x826/0xc10 [ 8.520477] ? ramdisk_size+0x27/0x27 [ 8.520477] brd_alloc+0x118/0x540 [ 8.520477] ? ramdisk_size+0x27/0x27 [ 8.520477] brd_init+0x179/0x4be [ 8.520477] ? do_one_initcall+0x5fe/0x783 [ 8.520477] ? ramdisk_size+0x27/0x27 [ 8.520477] do_one_initcall+0xf7/0x783 [ 8.520477] ? initcall_blacklisted+0x1b0/0x1b0 [ 8.520477] ? __wake_up_common+0x600/0x620 [ 8.520477] ? lock_downgrade+0x720/0x720 [ 8.520477] ? check_preemption_disabled+0x40/0x2a0 [ 8.520477] kernel_init_freeable+0xb34/0xc27 [ 8.520477] ? rest_init+0x41c/0x41c [ 8.520477] kernel_init+0x10/0x1e0 [ 8.520477] ? rest_init+0x41c/0x41c [ 8.520477] ret_from_fork+0x24/0x30 [ 8.520477] Modules linked in: [ 8.520477] Dumping ftrace buffer: [ 8.520477] (ftrace buffer empty) [ 8.520477] ---[ end trace 74cf51ecec6ee7a1 ]--- Fix this by judging whether q->td is NULL. If so, Indicates that the io_throttle module has not been initialized. Fixes: ee3147b403e5e ("block: fix race between adding/removing rq qos and normal IO") Signed-off-by: Laibin Qiu <qiulaibin(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- block/blk-cgroup.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 592befc26584f..9511330bfebc7 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -1314,6 +1314,13 @@ void blkcg_drain_queue(struct request_queue *q) if (!q->root_blkg) return; + /* + * @q could be exiting and q->td has not been initialized. + * If so, don't need drain any throttled bios. + */ + if (!q->td) + return; + blk_throtl_drain(q); } -- 2.25.1

1 0

[PATCH openEuler-1.0-LTS 0/9] ascend inclusion mpam feature
by Wang Xingang 24 Sep '21

24 Sep '21

From: Xingang Wang <wangxingang5(a)huawei.com> This series patches introduce mpam feature for ascend: - 1. The mpam driver resctrlfs need to add write interface for rmid, so that the rmid can be configured from userspace. - 2. Add support to configure SMMU mpam from svm. bugzilla: https://gitee.com/openeuler/kernel/issues/I49RB2 Xingang Wang (9): iommu/arm-smmu-v3: Add support to configure mpam in STE/CD context iommu/arm-smmu-v3: Add support to get SMMU mpam configuration iommu/arm-smmu-v3: Add support to enable/disable SMMU user_mpam_en svm: Add support to get svm mpam configuration svm: Add support to set svm mpam configuration svm: Add svm_set_user_mpam_en to enable/disable mpam for smmu mpam: enable rdt_mon_capable for mbw monitor mpam: Add support for group rmid modify mpam: update monitor rmid and group configuration arch/arm64/kernel/mpam/mpam_ctrlmon.c | 33 ++-- arch/arm64/kernel/mpam/mpam_resctrl.c | 104 +++++++++- arch/arm64/kernel/mpam/mpam_setup.c | 1 + drivers/char/svm.c | 227 ++++++++++++++++++++++ drivers/iommu/arm-smmu-v3-context.c | 42 ++++ drivers/iommu/arm-smmu-v3.c | 265 ++++++++++++++++++++++++++ include/linux/ascend_smmu.h | 21 ++ 7 files changed, 674 insertions(+), 19 deletions(-) create mode 100644 include/linux/ascend_smmu.h -- 2.19.1

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[PATCH openEuler-1.0-LTS 1/3] block: fix race between adding/removing rq qos and normal IO
by Yang Yingliang 24 Sep '21

24 Sep '21

From: Ming Lei <ming.lei(a)redhat.com> mainline inclusion from mainline-v5.14 commit 2cafe29a8d03f02a3d16193bdaae2f3e82a423f9 category: bugfix bugzilla: 182135 CVE: NA ------------------------------------------------- Yi reported several kernel panics on: [16687.001777] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 ... [16687.163549] pc : __rq_qos_track+0x38/0x60 or [ 997.690455] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020 ... [ 997.850347] pc : __rq_qos_done+0x2c/0x50 Turns out it is caused by race between adding rq qos(wbt) and normal IO because rq_qos_add can be run when IO is being submitted, fix this issue by freezing queue before adding/deleting rq qos to queue. rq_qos_exit() needn't to freeze queue because it is called after queue has been frozen. iolatency calls rq_qos_add() during allocating queue, so freezing won't add delay because queue usage refcount works at atomic mode at that time. iocost calls rq_qos_add() when writing cgroup attribute file, that is fine to freeze queue at that time since we usually freeze queue when storing to queue sysfs attribute, meantime iocost only exists on the root cgroup. wbt_init calls it in blk_register_queue() and queue sysfs attribute store(queue_wb_lat_store() when write it 1st time in case of !BLK_WBT_MQ), the following patch will speedup the queue freezing in wbt_init. Reported-by: Yi Zhang <yi.zhang(a)redhat.com> Cc: Bart Van Assche <bvanassche(a)acm.org> Signed-off-by: Ming Lei <ming.lei(a)redhat.com> Reviewed-by: Bart Van Assche <bvanassche(a)acm.org> Tested-by: Yi Zhang <yi.zhang(a)redhat.com> Link: https://lore.kernel.org/r/20210609015822.103433-2-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe(a)kernel.dk> Conflict: block/blk-rq-qos.h Signed-off-by: Laibin Qiu <qiulaibin(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- block/blk-rq-qos.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/block/blk-rq-qos.h b/block/blk-rq-qos.h index 98caba3e962ee..c99b2facd9ffd 100644 --- a/block/blk-rq-qos.h +++ b/block/blk-rq-qos.h @@ -6,6 +6,7 @@ #include <linux/blk_types.h> #include <linux/atomic.h> #include <linux/wait.h> +#include <linux/blk-mq.h> enum rq_qos_id { RQ_QOS_WBT, @@ -74,20 +75,43 @@ static inline void rq_wait_init(struct rq_wait *rq_wait) static inline void rq_qos_add(struct request_queue *q, struct rq_qos *rqos) { + /* + * No IO can be in-flight when adding rqos, so freeze queue, which + * is fine since we only support rq_qos for blk-mq queue. + * + * Reuse ->queue_lock for protecting against other concurrent + * rq_qos adding/deleting + */ + blk_mq_freeze_queue(q); + + spin_lock_irq(q->queue_lock); rqos->next = q->rq_qos; q->rq_qos = rqos; + spin_unlock_irq(q->queue_lock); + + blk_mq_unfreeze_queue(q); } static inline void rq_qos_del(struct request_queue *q, struct rq_qos *rqos) { struct rq_qos **cur; + /* + * See comment in rq_qos_add() about freezing queue & using + * ->queue_lock. + */ + blk_mq_freeze_queue(q); + + spin_lock_irq(q->queue_lock); for (cur = &q->rq_qos; *cur; cur = &(*cur)->next) { if (*cur == rqos) { *cur = rqos->next; break; } } + spin_unlock_irq(q->queue_lock); + + blk_mq_unfreeze_queue(q); } bool rq_wait_inc_below(struct rq_wait *rq_wait, unsigned int limit); -- 2.25.1

1 2

[PATCH openEuler-1.0-LTS] Fix incorrect call to free srb in qla2xxx_mqueuecommand()
by yinxiujiang 23 Sep '21

23 Sep '21

From: yin-xiujiang <yinxiujiang(a)kylinos.cn> Fix incorrect call to free srb in qla2xxx_mqueuecommand(), as srb is now allocated by upper layers. This fixes smatch warning of srb unintended free. Signed-off-by: yin-xiujiang <yinxiujiang(a)kylinos.cn> --- drivers/scsi/qla2xxx/qla_os.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index bfbf213b15c0..8e9d386146ac 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -1028,8 +1028,6 @@ qla2xxx_mqueuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd, if (rval != QLA_SUCCESS) { ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x3078, "Start scsi failed rval=%d for cmd=%p.\n", rval, cmd); - if (rval == QLA_INTERFACE_ERROR) - goto qc24_free_sp_fail_command; goto qc24_host_busy_free_sp; } @@ -1044,11 +1042,6 @@ qla2xxx_mqueuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd, qc24_target_busy: return SCSI_MLQUEUE_TARGET_BUSY; -qc24_free_sp_fail_command: - sp->free(sp); - CMD_SP(cmd) = NULL; - qla2xxx_rel_qpair_sp(sp->qpair, sp); - qc24_fail_command: cmd->scsi_done(cmd); -- 2.27.0

2 1

[PATCH openEuler-1.0-LTS 0/34] arm64 support kexec -l -s
by xuhuijie 23 Sep '21

23 Sep '21

support arm64 kexec_file(23): kexec_file: add kexec_file_load system call to unistd.h kexec_file: make kexec_image_post_load_cleanup_default() global kexec_file: drop arch_kexec_mem_walk() kexec_file: factor out memblock-based arch_kexec_walk_mem() kexec_file: kexec_walk_memblock() only walks a dedicated region at kdump kexec_file: add image head flag definitions kexec_file: cpufeature: add MMFR0 helper functions kexec_file: enable KEXEC_FILE config kexec_file: load initrd and device-tree kexec_file: allow for loading Image-format kernel kexec_file: invoke the kernel without purgatory kexec_file: pe.h: remove message[] from mz header definition kexec_file: add kernel signature verification support kexec_file: add kaslr support kexec_file: forbid kdump via kexec_file_load() kexec_file: include fdt_addresses.c kexec_file: include linux/vmalloc.h kexec_file: Refactor setup_dtb() to consolidate error checking kexec_file: add rng-seed support kexec_file: add crash dump support kexec_file: Update to upstream version v1.5.0-23-g87963ee20693 kexec_file: handle empty command-line kexec_file: fix memory leakage in create_dtb() when fdt_open_into() fails support platform keyring(10): integrity: Define a trusted platform keyring integrity: Load certs to the platform keyring integrity: Add EFI signature data types integrity: Add an EFI signature blob parser integrity: Import certificates from UEFI Secure Boot integrity: Allow the "db" UEFI variable to be suppressed integrity: Support platform keyring for kernel appraisal integrity, KEYS: add a reference to platform keyring integrity: Make use of platform keyring for signature verify integrity: Fix __integrity_init_keyring() section mismatch fix kabi(1): kexec_file: fix kabi because of the new system call sys_kexec_file_load --- arch/arm64/Kconfig | 33 ++ arch/arm64/include/asm/cpufeature.h | 48 +++ arch/arm64/include/asm/image.h | 59 +++ arch/arm64/include/asm/kexec.h | 23 ++ arch/arm64/kernel/Makefile | 3 +- arch/arm64/kernel/cpu-reset.S | 8 +- arch/arm64/kernel/head.S | 3 +- arch/arm64/kernel/image.h | 21 +- arch/arm64/kernel/kexec_image.c | 126 +++++++ arch/arm64/kernel/machine_kexec.c | 12 +- arch/arm64/kernel/machine_kexec_file.c | 342 ++++++++++++++++++ arch/arm64/kernel/relocate_kernel.S | 3 +- arch/powerpc/kernel/machine_kexec_file_64.c | 54 --- arch/s390/kernel/machine_kexec_file.c | 10 - arch/x86/kernel/kexec-bzimage64.c | 14 +- certs/system_keyring.c | 23 +- include/keys/system_keyring.h | 8 + include/linux/efi.h | 34 ++ include/linux/kexec.h | 15 +- include/linux/pe.h | 2 +- include/linux/verification.h | 1 + include/uapi/linux/kexec.h | 1 + kernel/kexec.c | 10 + kernel/kexec_file.c | 160 +++++++- lib/Makefile | 2 +- lib/fdt_addresses.c | 2 + scripts/dtc/libfdt/fdt_addresses.c | 47 +++ scripts/dtc/libfdt/libfdt.h | 61 ++++ security/integrity/Kconfig | 11 + security/integrity/Makefile | 5 + security/integrity/digsig.c | 114 ++++-- security/integrity/ima/ima_appraise.c | 14 +- security/integrity/integrity.h | 23 +- .../integrity/platform_certs/efi_parser.c | 108 ++++++ security/integrity/platform_certs/load_uefi.c | 194 ++++++++++ .../platform_certs/platform_keyring.c | 58 +++ 36 files changed, 1518 insertions(+), 134 deletions(-) create mode 100644 arch/arm64/include/asm/image.h create mode 100644 arch/arm64/kernel/kexec_image.c create mode 100644 arch/arm64/kernel/machine_kexec_file.c create mode 100644 lib/fdt_addresses.c create mode 100644 security/integrity/platform_certs/efi_parser.c create mode 100644 security/integrity/platform_certs/load_uefi.c create mode 100644 security/integrity/platform_certs/platform_keyring.c diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 9dfbd052b..5381d21bb 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -957,6 +957,39 @@ config KEXEC but it is independent of the system firmware. And like a reboot you can start any kernel with it, not just Linux. +config KEXEC_FILE + bool "kexec file based system call" + select KEXEC_CORE + help + This is new version of kexec system call. This system call is + file based and takes file descriptors as system call argument + for kernel and initramfs as opposed to list of segments as + accepted by previous system call. + +config KEXEC_VERIFY_SIG + bool "Verify kernel signature during kexec_file_load() syscall" + depends on KEXEC_FILE + help + Select this option to verify a signature with loaded kernel + image. If configured, any attempt of loading a image without + valid signature will fail. + + In addition to that option, you need to enable signature + verification for the corresponding kernel image type being + loaded in order for this to work. + +config KEXEC_IMAGE_VERIFY_SIG + bool "Enable Image signature verification support" + default y + depends on KEXEC_VERIFY_SIG + depends on EFI && SIGNED_PE_FILE_VERIFICATION + help + Enable Image signature verification support. + +comment "Support for PE file signature verification disabled" + depends on KEXEC_VERIFY_SIG + depends on !EFI || !SIGNED_PE_FILE_VERIFICATION + config CRASH_DUMP bool "Build kdump crash kernel" help diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index c43d02365..211aa994b 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -497,11 +497,59 @@ static inline bool system_supports_32bit_el0(void) return cpus_have_const_cap(ARM64_HAS_32BIT_EL0); } +static inline bool system_supports_4kb_granule(void) +{ + u64 mmfr0; + u32 val; + + mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1); + val = cpuid_feature_extract_unsigned_field(mmfr0, + ID_AA64MMFR0_TGRAN4_SHIFT); + + return val == ID_AA64MMFR0_TGRAN4_SUPPORTED; +} + +static inline bool system_supports_64kb_granule(void) +{ + u64 mmfr0; + u32 val; + + mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1); + val = cpuid_feature_extract_unsigned_field(mmfr0, + ID_AA64MMFR0_TGRAN64_SHIFT); + + return val == ID_AA64MMFR0_TGRAN64_SUPPORTED; +} + +static inline bool system_supports_16kb_granule(void) +{ + u64 mmfr0; + u32 val; + + mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1); + val = cpuid_feature_extract_unsigned_field(mmfr0, + ID_AA64MMFR0_TGRAN16_SHIFT); + + return val == ID_AA64MMFR0_TGRAN16_SUPPORTED; +} + static inline bool system_supports_mixed_endian_el0(void) { return id_aa64mmfr0_mixed_endian_el0(read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1)); } +static inline bool system_supports_mixed_endian(void) +{ + u64 mmfr0; + u32 val; + + mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1); + val = cpuid_feature_extract_unsigned_field(mmfr0, + ID_AA64MMFR0_BIGENDEL_SHIFT); + + return val == 0x1; +} + static inline bool system_supports_fpsimd(void) { return !cpus_have_const_cap(ARM64_HAS_NO_FPSIMD); diff --git a/arch/arm64/include/asm/image.h b/arch/arm64/include/asm/image.h new file mode 100644 index 000000000..e2c27a227 --- /dev/null +++ b/arch/arm64/include/asm/image.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ASM_IMAGE_H +#define __ASM_IMAGE_H + +#define ARM64_IMAGE_MAGIC "ARM\x64" + +#define ARM64_IMAGE_FLAG_BE_SHIFT 0 +#define ARM64_IMAGE_FLAG_PAGE_SIZE_SHIFT (ARM64_IMAGE_FLAG_BE_SHIFT + 1) +#define ARM64_IMAGE_FLAG_PHYS_BASE_SHIFT \ + (ARM64_IMAGE_FLAG_PAGE_SIZE_SHIFT + 2) +#define ARM64_IMAGE_FLAG_BE_MASK 0x1 +#define ARM64_IMAGE_FLAG_PAGE_SIZE_MASK 0x3 +#define ARM64_IMAGE_FLAG_PHYS_BASE_MASK 0x1 + +#define ARM64_IMAGE_FLAG_LE 0 +#define ARM64_IMAGE_FLAG_BE 1 +#define ARM64_IMAGE_FLAG_PAGE_SIZE_4K 1 +#define ARM64_IMAGE_FLAG_PAGE_SIZE_16K 2 +#define ARM64_IMAGE_FLAG_PAGE_SIZE_64K 3 +#define ARM64_IMAGE_FLAG_PHYS_BASE 1 + +#ifndef __ASSEMBLY__ + +#define arm64_image_flag_field(flags, field) \ + (((flags) >> field##_SHIFT) & field##_MASK) + +/* + * struct arm64_image_header - arm64 kernel image header + * See Documentation/arm64/booting.txt for details + * + * @code0: Executable code, or + * @mz_header alternatively used for part of MZ header + * @code1: Executable code + * @text_offset: Image load offset + * @image_size: Effective Image size + * @flags: kernel flags + * @reserved: reserved + * @magic: Magic number + * @reserved5: reserved, or + * @pe_header: alternatively used for PE COFF offset + */ + +struct arm64_image_header { + __le32 code0; + __le32 code1; + __le64 text_offset; + __le64 image_size; + __le64 flags; + __le64 res2; + __le64 res3; + __le64 res4; + __le32 magic; + __le32 res5; +}; + +#endif /* __ASSEMBLY__ */ + +#endif /* __ASM_IMAGE_H */ diff --git a/arch/arm64/include/asm/kexec.h b/arch/arm64/include/asm/kexec.h index 30ab1fa34..286950227 100644 --- a/arch/arm64/include/asm/kexec.h +++ b/arch/arm64/include/asm/kexec.h @@ -101,6 +101,29 @@ static inline void crash_prepare_suspend(void) {} static inline void crash_post_resume(void) {} #endif +#ifdef CONFIG_KEXEC_FILE +#define ARCH_HAS_KIMAGE_ARCH + +struct kimage_arch { + void *dtb; + unsigned long dtb_mem; + /* Core ELF header buffer */ + void *elf_headers; + unsigned long elf_headers_mem; + unsigned long elf_headers_sz; +}; + +extern const struct kexec_file_ops kexec_image_ops; + +struct kimage; + +extern int arch_kimage_file_post_load_cleanup(struct kimage *image); +extern int load_other_segments(struct kimage *image, + unsigned long kernel_load_addr, unsigned long kernel_size, + char *initrd, unsigned long initrd_len, + char *cmdline); +#endif + void machine_kexec_mask_interrupts(void); #endif /* __ASSEMBLY__ */ diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index fe759f364..2e21303b6 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -54,8 +54,9 @@ arm64-obj-$(CONFIG_ARM64_ACPI_PARKING_PROTOCOL) += acpi_parking_protocol.o arm64-obj-$(CONFIG_PARAVIRT) += paravirt.o paravirt-spinlocks.o arm64-obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o arm64-obj-$(CONFIG_HIBERNATION) += hibernate.o hibernate-asm.o -arm64-obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o \ +arm64-obj-$(CONFIG_KEXEC_CORE) += machine_kexec.o relocate_kernel.o \ cpu-reset.o +arm64-obj-$(CONFIG_KEXEC_FILE) += machine_kexec_file.o kexec_image.o arm64-obj-$(CONFIG_ARM64_CPU_PARK) += cpu-park.o arm64-obj-$(CONFIG_ARM64_RELOC_TEST) += arm64-reloc-test.o arm64-reloc-test-y := reloc_test_core.o reloc_test_syms.o diff --git a/arch/arm64/kernel/cpu-reset.S b/arch/arm64/kernel/cpu-reset.S index 8021b46c9..a2be30275 100644 --- a/arch/arm64/kernel/cpu-reset.S +++ b/arch/arm64/kernel/cpu-reset.S @@ -22,11 +22,11 @@ * __cpu_soft_restart(el2_switch, entry, arg0, arg1, arg2) - Helper for * cpu_soft_restart. * - * @el2_switch: Flag to indicate a swich to EL2 is needed. + * @el2_switch: Flag to indicate a switch to EL2 is needed. * @entry: Location to jump to for soft reset. - * arg0: First argument passed to @entry. - * arg1: Second argument passed to @entry. - * arg2: Third argument passed to @entry. + * arg0: First argument passed to @entry. (relocation list) + * arg1: Second argument passed to @entry.(physical kernel entry) + * arg2: Third argument passed to @entry. (physical dtb address) * * Put the CPU into the same state as it would be if it had been reset, and * branch to what would be the reset vector. It must be executed with the diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index 34bd0790d..5edfb9cfd 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -31,6 +31,7 @@ #include <asm/cache.h> #include <asm/cputype.h> #include <asm/elf.h> +#include <asm/image.h> #include <asm/kernel-pgtable.h> #include <asm/kvm_arm.h> #include <asm/memory.h> @@ -91,7 +92,7 @@ _head: .quad 0 // reserved .quad 0 // reserved .quad 0 // reserved - .ascii "ARM\x64" // Magic number + .ascii ARM64_IMAGE_MAGIC // Magic number #ifdef CONFIG_EFI .long pe_header - _head // Offset to the PE header. diff --git a/arch/arm64/kernel/image.h b/arch/arm64/kernel/image.h index eff6a564a..b22e8ad07 100644 --- a/arch/arm64/kernel/image.h +++ b/arch/arm64/kernel/image.h @@ -15,13 +15,15 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ -#ifndef __ASM_IMAGE_H -#define __ASM_IMAGE_H +#ifndef __ARM64_KERNEL_IMAGE_H +#define __ARM64_KERNEL_IMAGE_H #ifndef LINKER_SCRIPT #error This file should only be included in vmlinux.lds.S #endif +#include <asm/image.h> + /* * There aren't any ELF relocations we can use to endian-swap values known only * at link time (e.g. the subtraction of two symbol addresses), so we must get @@ -47,19 +49,22 @@ sym##_lo32 = DATA_LE32((data) & 0xffffffff); \ sym##_hi32 = DATA_LE32((data) >> 32) +#define __HEAD_FLAG(field) (__HEAD_FLAG_##field << \ + ARM64_IMAGE_FLAG_##field##_SHIFT) + #ifdef CONFIG_CPU_BIG_ENDIAN -#define __HEAD_FLAG_BE 1 +#define __HEAD_FLAG_BE ARM64_IMAGE_FLAG_BE #else -#define __HEAD_FLAG_BE 0 +#define __HEAD_FLAG_BE ARM64_IMAGE_FLAG_LE #endif #define __HEAD_FLAG_PAGE_SIZE ((PAGE_SHIFT - 10) / 2) #define __HEAD_FLAG_PHYS_BASE 1 -#define __HEAD_FLAGS ((__HEAD_FLAG_BE << 0) | \ - (__HEAD_FLAG_PAGE_SIZE << 1) | \ - (__HEAD_FLAG_PHYS_BASE << 3)) +#define __HEAD_FLAGS (__HEAD_FLAG(BE) | \ + __HEAD_FLAG(PAGE_SIZE) | \ + __HEAD_FLAG(PHYS_BASE)) /* * These will output as part of the Image header, which should be little-endian @@ -113,4 +118,4 @@ __efistub_screen_info = screen_info; #endif -#endif /* __ASM_IMAGE_H */ +#endif /* __ARM64_KERNEL_IMAGE_H */ diff --git a/arch/arm64/kernel/kexec_image.c b/arch/arm64/kernel/kexec_image.c new file mode 100644 index 000000000..1ad1d5f8f --- /dev/null +++ b/arch/arm64/kernel/kexec_image.c @@ -0,0 +1,126 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Kexec image loader + + * Copyright (C) 2018 Linaro Limited + * Author: AKASHI Takahiro <takahiro.akashi(a)linaro.org> + */ + +#define pr_fmt(fmt) "kexec_file(Image): " fmt + +#include <linux/err.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/kexec.h> +#include <linux/pe.h> +#include <linux/string.h> +#include <linux/verification.h> +#include <asm/byteorder.h> +#include <asm/cpufeature.h> +#include <asm/image.h> +#include <asm/memory.h> + +static int image_probe(const char *kernel_buf, unsigned long kernel_len) +{ + const struct arm64_image_header *h = + (const struct arm64_image_header *)(kernel_buf); + + if (!h || (kernel_len < sizeof(*h))) + return -EINVAL; + + if (memcmp(&h->magic, ARM64_IMAGE_MAGIC, sizeof(h->magic))) + return -EINVAL; + + return 0; +} + +static void *image_load(struct kimage *image, + char *kernel, unsigned long kernel_len, + char *initrd, unsigned long initrd_len, + char *cmdline, unsigned long cmdline_len) +{ + struct arm64_image_header *h; + u64 flags, value; + bool be_image, be_kernel; + struct kexec_buf kbuf; + unsigned long text_offset; + struct kexec_segment *kernel_segment; + int ret; + + /* + * We require a kernel with an unambiguous Image header. Per + * Documentation/booting.txt, this is the case when image_size + * is non-zero (practically speaking, since v3.17). + */ + h = (struct arm64_image_header *)kernel; + if (!h->image_size) + return ERR_PTR(-EINVAL); + + /* Check cpu features */ + flags = le64_to_cpu(h->flags); + be_image = arm64_image_flag_field(flags, ARM64_IMAGE_FLAG_BE); + be_kernel = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN); + if ((be_image != be_kernel) && !system_supports_mixed_endian()) + return ERR_PTR(-EINVAL); + + value = arm64_image_flag_field(flags, ARM64_IMAGE_FLAG_PAGE_SIZE); + if (((value == ARM64_IMAGE_FLAG_PAGE_SIZE_4K) && + !system_supports_4kb_granule()) || + ((value == ARM64_IMAGE_FLAG_PAGE_SIZE_64K) && + !system_supports_64kb_granule()) || + ((value == ARM64_IMAGE_FLAG_PAGE_SIZE_16K) && + !system_supports_16kb_granule())) + return ERR_PTR(-EINVAL); + + /* Load the kernel */ + kbuf.image = image; + kbuf.buf_min = 0; + kbuf.buf_max = ULONG_MAX; + kbuf.top_down = false; + + kbuf.buffer = kernel; + kbuf.bufsz = kernel_len; + kbuf.mem = 0; + kbuf.memsz = le64_to_cpu(h->image_size); + text_offset = le64_to_cpu(h->text_offset); + kbuf.buf_align = MIN_KIMG_ALIGN; + + /* Adjust kernel segment with TEXT_OFFSET */ + kbuf.memsz += text_offset; + + ret = kexec_add_buffer(&kbuf); + if (ret) + return ERR_PTR(ret); + + kernel_segment = &image->segment[image->nr_segments - 1]; + kernel_segment->mem += text_offset; + kernel_segment->memsz -= text_offset; + image->start = kernel_segment->mem; + + pr_debug("Loaded kernel at 0x%lx bufsz=0x%lx memsz=0x%lx\n", + kernel_segment->mem, kbuf.bufsz, + kernel_segment->memsz); + + /* Load additional data */ + ret = load_other_segments(image, + kernel_segment->mem, kernel_segment->memsz, + initrd, initrd_len, cmdline); + + return ERR_PTR(ret); +} + +#ifdef CONFIG_KEXEC_IMAGE_VERIFY_SIG +static int image_verify_sig(const char *kernel, unsigned long kernel_len) +{ + return verify_pefile_signature(kernel, kernel_len, NULL, + VERIFYING_KEXEC_PE_SIGNATURE); +} +#endif + +const struct kexec_file_ops kexec_image_ops = { + .probe = image_probe, + .load = image_load, +#ifdef CONFIG_KEXEC_IMAGE_VERIFY_SIG + .verify_sig = image_verify_sig, +#endif +}; diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index b41d6d482..213d0053e 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -214,9 +214,17 @@ void machine_kexec(struct kimage *kimage) * uses physical addressing to relocate the new image to its final * position and transfers control to the image entry point when the * relocation is complete. + * In kexec case, kimage->start points to purgatory assuming that + * kernel entry and dtb address are embedded in purgatory by + * userspace (kexec-tools). + * In kexec_file case, the kernel starts directly without purgatory. */ - - cpu_soft_restart(reboot_code_buffer_phys, kimage->head, kimage->start, 0); + cpu_soft_restart(reboot_code_buffer_phys, kimage->head, kimage->start, +#ifdef CONFIG_KEXEC_FILE + kimage->arch.dtb_mem); +#else + 0); +#endif BUG(); /* Should never get here. */ } diff --git a/arch/arm64/kernel/machine_kexec_file.c b/arch/arm64/kernel/machine_kexec_file.c new file mode 100644 index 000000000..ec3b72dc0 --- /dev/null +++ b/arch/arm64/kernel/machine_kexec_file.c @@ -0,0 +1,342 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * kexec_file for arm64 + * + * Copyright (C) 2018 Linaro Limited + * Author: AKASHI Takahiro <takahiro.akashi(a)linaro.org> + * + * Most code is derived from arm64 port of kexec-tools + */ + +#define pr_fmt(fmt) "kexec_file: " fmt + +#include <linux/ioport.h> +#include <linux/kernel.h> +#include <linux/kexec.h> +#include <linux/libfdt.h> +#include <linux/memblock.h> +#include <linux/of_fdt.h> +#include <linux/random.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/types.h> +#include <linux/vmalloc.h> +#include <asm/byteorder.h> + +/* relevant device tree properties */ +#define FDT_PROP_KEXEC_ELFHDR "linux,elfcorehdr" +#define FDT_PROP_MEM_RANGE "linux,usable-memory-range" +#define FDT_PROP_INITRD_START "linux,initrd-start" +#define FDT_PROP_INITRD_END "linux,initrd-end" +#define FDT_PROP_BOOTARGS "bootargs" +#define FDT_PROP_KASLR_SEED "kaslr-seed" +#define FDT_PROP_RNG_SEED "rng-seed" +#define RNG_SEED_SIZE 128 + +const struct kexec_file_ops * const kexec_file_loaders[] = { + &kexec_image_ops, + NULL +}; + +int arch_kimage_file_post_load_cleanup(struct kimage *image) +{ + vfree(image->arch.dtb); + image->arch.dtb = NULL; + + vfree(image->arch.elf_headers); + image->arch.elf_headers = NULL; + image->arch.elf_headers_sz = 0; + + return kexec_image_post_load_cleanup_default(image); +} + +static int setup_dtb(struct kimage *image, + unsigned long initrd_load_addr, unsigned long initrd_len, + char *cmdline, void *dtb) +{ + int off, ret; + + ret = fdt_path_offset(dtb, "/chosen"); + if (ret < 0) + goto out; + + off = ret; + + ret = fdt_delprop(dtb, off, FDT_PROP_KEXEC_ELFHDR); + if (ret && ret != -FDT_ERR_NOTFOUND) + goto out; + ret = fdt_delprop(dtb, off, FDT_PROP_MEM_RANGE); + if (ret && ret != -FDT_ERR_NOTFOUND) + goto out; + + if (image->type == KEXEC_TYPE_CRASH) { + /* add linux,elfcorehdr */ + ret = fdt_appendprop_addrrange(dtb, 0, off, + FDT_PROP_KEXEC_ELFHDR, + image->arch.elf_headers_mem, + image->arch.elf_headers_sz); + if (ret) + return (ret == -FDT_ERR_NOSPACE ? -ENOMEM : -EINVAL); + + /* add linux,usable-memory-range */ + ret = fdt_appendprop_addrrange(dtb, 0, off, + FDT_PROP_MEM_RANGE, + crashk_res.start, + crashk_res.end - crashk_res.start + 1); + if (ret) + return (ret == -FDT_ERR_NOSPACE ? -ENOMEM : -EINVAL); + } + + /* add bootargs */ + if (cmdline) { + ret = fdt_setprop_string(dtb, off, FDT_PROP_BOOTARGS, cmdline); + if (ret) + goto out; + } else { + ret = fdt_delprop(dtb, off, FDT_PROP_BOOTARGS); + if (ret && (ret != -FDT_ERR_NOTFOUND)) + goto out; + } + + /* add initrd-* */ + if (initrd_load_addr) { + ret = fdt_setprop_u64(dtb, off, FDT_PROP_INITRD_START, + initrd_load_addr); + if (ret) + goto out; + + ret = fdt_setprop_u64(dtb, off, FDT_PROP_INITRD_END, + initrd_load_addr + initrd_len); + if (ret) + goto out; + } else { + ret = fdt_delprop(dtb, off, FDT_PROP_INITRD_START); + if (ret && (ret != -FDT_ERR_NOTFOUND)) + goto out; + + ret = fdt_delprop(dtb, off, FDT_PROP_INITRD_END); + if (ret && (ret != -FDT_ERR_NOTFOUND)) + goto out; + } + + /* add kaslr-seed */ + ret = fdt_delprop(dtb, off, FDT_PROP_KASLR_SEED); + if (ret && (ret != -FDT_ERR_NOTFOUND)) + goto out; + + if (rng_is_initialized()) { + u64 seed = get_random_u64(); + ret = fdt_setprop_u64(dtb, off, FDT_PROP_KASLR_SEED, seed); + if (ret) + goto out; + } else { + pr_notice("RNG is not initialised: omitting \"%s\" property\n", + FDT_PROP_KASLR_SEED); + } + + /* add rng-seed */ + if (rng_is_initialized()) { + u8 rng_seed[RNG_SEED_SIZE]; + get_random_bytes(rng_seed, RNG_SEED_SIZE); + ret = fdt_setprop(dtb, off, FDT_PROP_RNG_SEED, rng_seed, + RNG_SEED_SIZE); + if (ret) + goto out; + } else { + pr_notice("RNG is not initialised: omitting \"%s\" property\n", + FDT_PROP_RNG_SEED); + } + +out: + if (ret) + return (ret == -FDT_ERR_NOSPACE) ? -ENOMEM : -EINVAL; + + return 0; +} + +/* + * More space needed so that we can add initrd, bootargs, kaslr-seed, + * rng-seed, userable-memory-range and elfcorehdr. + */ +#define DTB_EXTRA_SPACE 0x1000 + +static int create_dtb(struct kimage *image, + unsigned long initrd_load_addr, unsigned long initrd_len, + char *cmdline, void **dtb) +{ + void *buf; + size_t buf_size; + size_t cmdline_len; + int ret; + + cmdline_len = cmdline ? strlen(cmdline) : 0; + buf_size = fdt_totalsize(initial_boot_params) + + cmdline_len + DTB_EXTRA_SPACE; + + for (;;) { + buf = vmalloc(buf_size); + if (!buf) + return -ENOMEM; + + /* duplicate a device tree blob */ + ret = fdt_open_into(initial_boot_params, buf, buf_size); + if (ret) { + vfree(buf); + return -EINVAL; + } + + ret = setup_dtb(image, initrd_load_addr, initrd_len, + cmdline, buf); + if (ret) { + vfree(buf); + if (ret == -ENOMEM) { + /* unlikely, but just in case */ + buf_size += DTB_EXTRA_SPACE; + continue; + } else { + return ret; + } + } + + /* trim it */ + fdt_pack(buf); + *dtb = buf; + + return 0; + } +} + +static int prepare_elf_headers(void **addr, unsigned long *sz) +{ + struct crash_mem *cmem; + unsigned int nr_ranges; + int ret; + u64 i; + phys_addr_t start, end; + + nr_ranges = 1; /* for exclusion of crashkernel region */ + for_each_mem_range(i, &memblock.memory, NULL, NUMA_NO_NODE, + MEMBLOCK_NONE, &start, &end, NULL) + nr_ranges++; + + cmem = kmalloc(sizeof(struct crash_mem) + + sizeof(struct crash_mem_range) * nr_ranges, GFP_KERNEL); + if (!cmem) + return -ENOMEM; + + cmem->max_nr_ranges = nr_ranges; + cmem->nr_ranges = 0; + for_each_mem_range(i, &memblock.memory, NULL, NUMA_NO_NODE, + MEMBLOCK_NONE, &start, &end, NULL) { + cmem->ranges[cmem->nr_ranges].start = start; + cmem->ranges[cmem->nr_ranges].end = end - 1; + cmem->nr_ranges++; + } + + /* Exclude crashkernel region */ + ret = crash_exclude_mem_range(cmem, crashk_res.start, crashk_res.end); + + if (!ret) + ret = crash_prepare_elf64_headers(cmem, true, addr, sz); + + kfree(cmem); + return ret; +} + +int load_other_segments(struct kimage *image, + unsigned long kernel_load_addr, + unsigned long kernel_size, + char *initrd, unsigned long initrd_len, + char *cmdline) +{ + struct kexec_buf kbuf; + void *headers, *dtb = NULL; + unsigned long headers_sz, initrd_load_addr = 0, dtb_len; + int ret = 0; + + kbuf.image = image; + /* not allocate anything below the kernel */ + kbuf.buf_min = kernel_load_addr + kernel_size; + + /* load elf core header */ + if (image->type == KEXEC_TYPE_CRASH) { + ret = prepare_elf_headers(&headers, &headers_sz); + if (ret) { + pr_err("Preparing elf core header failed\n"); + goto out_err; + } + + kbuf.buffer = headers; + kbuf.bufsz = headers_sz; + kbuf.mem = KEXEC_BUF_MEM_UNKNOWN; + kbuf.memsz = headers_sz; + kbuf.buf_align = SZ_64K; /* largest supported page size */ + kbuf.buf_max = ULONG_MAX; + kbuf.top_down = true; + + ret = kexec_add_buffer(&kbuf); + if (ret) { + vfree(headers); + goto out_err; + } + image->arch.elf_headers = headers; + image->arch.elf_headers_mem = kbuf.mem; + image->arch.elf_headers_sz = headers_sz; + + pr_debug("Loaded elf core header at 0x%lx bufsz=0x%lx memsz=0x%lx\n", + image->arch.elf_headers_mem, headers_sz, headers_sz); + } + + /* load initrd */ + if (initrd) { + kbuf.buffer = initrd; + kbuf.bufsz = initrd_len; + kbuf.mem = 0; + kbuf.memsz = initrd_len; + kbuf.buf_align = 0; + /* within 1GB-aligned window of up to 32GB in size */ + kbuf.buf_max = round_down(kernel_load_addr, SZ_1G) + + (unsigned long)SZ_1G * 32; + kbuf.top_down = false; + + ret = kexec_add_buffer(&kbuf); + if (ret) + goto out_err; + initrd_load_addr = kbuf.mem; + + pr_debug("Loaded initrd at 0x%lx bufsz=0x%lx memsz=0x%lx\n", + initrd_load_addr, initrd_len, initrd_len); + } + + /* load dtb */ + ret = create_dtb(image, initrd_load_addr, initrd_len, cmdline, &dtb); + if (ret) { + pr_err("Preparing for new dtb failed\n"); + goto out_err; + } + + dtb_len = fdt_totalsize(dtb); + kbuf.buffer = dtb; + kbuf.bufsz = dtb_len; + kbuf.mem = 0; + kbuf.memsz = dtb_len; + /* not across 2MB boundary */ + kbuf.buf_align = SZ_2M; + kbuf.buf_max = ULONG_MAX; + kbuf.top_down = true; + + ret = kexec_add_buffer(&kbuf); + if (ret) + goto out_err; + image->arch.dtb = dtb; + image->arch.dtb_mem = kbuf.mem; + + pr_debug("Loaded dtb at 0x%lx bufsz=0x%lx memsz=0x%lx\n", + kbuf.mem, dtb_len, dtb_len); + + return 0; + +out_err: + vfree(dtb); + return ret; +} diff --git a/arch/arm64/kernel/relocate_kernel.S b/arch/arm64/kernel/relocate_kernel.S index f407e422a..95fd94209 100644 --- a/arch/arm64/kernel/relocate_kernel.S +++ b/arch/arm64/kernel/relocate_kernel.S @@ -32,6 +32,7 @@ ENTRY(arm64_relocate_new_kernel) /* Setup the list loop variables. */ + mov x18, x2 /* x18 = dtb address */ mov x17, x1 /* x17 = kimage_start */ mov x16, x0 /* x16 = kimage_head */ raw_dcache_line_size x15, x0 /* x15 = dcache line size */ @@ -107,7 +108,7 @@ ENTRY(arm64_relocate_new_kernel) isb /* Start new image. */ - mov x0, xzr + mov x0, x18 mov x1, xzr mov x2, xzr mov x3, xzr diff --git a/arch/powerpc/kernel/machine_kexec_file_64.c b/arch/powerpc/kernel/machine_kexec_file_64.c index c77e95e9b..0d20c7ad4 100644 --- a/arch/powerpc/kernel/machine_kexec_file_64.c +++ b/arch/powerpc/kernel/machine_kexec_file_64.c @@ -24,7 +24,6 @@ #include <linux/slab.h> #include <linux/kexec.h> -#include <linux/memblock.h> #include <linux/of_fdt.h> #include <linux/libfdt.h> #include <asm/ima.h> @@ -46,59 +45,6 @@ int arch_kexec_kernel_image_probe(struct kimage *image, void *buf, return kexec_image_probe_default(image, buf, buf_len); } -/** - * arch_kexec_walk_mem - call func(data) for each unreserved memory block - * @kbuf: Context info for the search. Also passed to @func. - * @func: Function to call for each memory block. - * - * This function is used by kexec_add_buffer and kexec_locate_mem_hole - * to find unreserved memory to load kexec segments into. - * - * Return: The memory walk will stop when func returns a non-zero value - * and that value will be returned. If all free regions are visited without - * func returning non-zero, then zero will be returned. - */ -int arch_kexec_walk_mem(struct kexec_buf *kbuf, - int (*func)(struct resource *, void *)) -{ - int ret = 0; - u64 i; - phys_addr_t mstart, mend; - struct resource res = { }; - - if (kbuf->top_down) { - for_each_free_mem_range_reverse(i, NUMA_NO_NODE, 0, - &mstart, &mend, NULL) { - /* - * In memblock, end points to the first byte after the - * range while in kexec, end points to the last byte - * in the range. - */ - res.start = mstart; - res.end = mend - 1; - ret = func(&res, kbuf); - if (ret) - break; - } - } else { - for_each_free_mem_range(i, NUMA_NO_NODE, 0, &mstart, &mend, - NULL) { - /* - * In memblock, end points to the first byte after the - * range while in kexec, end points to the last byte - * in the range. - */ - res.start = mstart; - res.end = mend - 1; - ret = func(&res, kbuf); - if (ret) - break; - } - } - - return ret; -} - /** * setup_purgatory - initialize the purgatory's global variables * @image: kexec image. diff --git a/arch/s390/kernel/machine_kexec_file.c b/arch/s390/kernel/machine_kexec_file.c index f413f57f8..32023b4f9 100644 --- a/arch/s390/kernel/machine_kexec_file.c +++ b/arch/s390/kernel/machine_kexec_file.c @@ -134,16 +134,6 @@ int kexec_file_add_initrd(struct kimage *image, struct s390_load_data *data, return ret; } -/* - * The kernel is loaded to a fixed location. Turn off kexec_locate_mem_hole - * and provide kbuf->mem by hand. - */ -int arch_kexec_walk_mem(struct kexec_buf *kbuf, - int (*func)(struct resource *, void *)) -{ - return 1; -} - int arch_kexec_apply_relocations_add(struct purgatory_info *pi, Elf_Shdr *section, const Elf_Shdr *relsec, diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c index 70caa60b4..8977de5ad 100644 --- a/arch/x86/kernel/kexec-bzimage64.c +++ b/arch/x86/kernel/kexec-bzimage64.c @@ -535,9 +535,17 @@ static int bzImage64_cleanup(void *loader_data) #ifdef CONFIG_KEXEC_BZIMAGE_VERIFY_SIG static int bzImage64_verify_sig(const char *kernel, unsigned long kernel_len) { - return verify_pefile_signature(kernel, kernel_len, - VERIFY_USE_SECONDARY_KEYRING, - VERIFYING_KEXEC_PE_SIGNATURE); + int ret; + + ret = verify_pefile_signature(kernel, kernel_len, + VERIFY_USE_SECONDARY_KEYRING, + VERIFYING_KEXEC_PE_SIGNATURE); + if (ret == -ENOKEY && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING)) { + ret = verify_pefile_signature(kernel, kernel_len, + VERIFY_USE_PLATFORM_KEYRING, + VERIFYING_KEXEC_PE_SIGNATURE); + } + return ret; } #endif diff --git a/certs/system_keyring.c b/certs/system_keyring.c index 817287175..c05c29ae4 100644 --- a/certs/system_keyring.c +++ b/certs/system_keyring.c @@ -24,6 +24,9 @@ static struct key *builtin_trusted_keys; #ifdef CONFIG_SECONDARY_TRUSTED_KEYRING static struct key *secondary_trusted_keys; #endif +#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING +static struct key *platform_trusted_keys; +#endif extern __initconst const u8 system_certificate_list[]; extern __initconst const unsigned long system_certificate_list_size; @@ -237,11 +240,22 @@ int verify_pkcs7_signature(const void *data, size_t len, #else trusted_keys = builtin_trusted_keys; #endif + } else if (trusted_keys == VERIFY_USE_PLATFORM_KEYRING) { +#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING + trusted_keys = platform_trusted_keys; +#else + trusted_keys = NULL; +#endif + if (!trusted_keys) { + ret = -ENOKEY; + pr_devel("PKCS#7 platform keyring is not available\n"); + goto error; + } } ret = pkcs7_validate_trust(pkcs7, trusted_keys); if (ret < 0) { if (ret == -ENOKEY) - pr_err("PKCS#7 signature not signed with a trusted key\n"); + pr_devel("PKCS#7 signature not signed with a trusted key\n"); goto error; } @@ -266,3 +280,10 @@ int verify_pkcs7_signature(const void *data, size_t len, EXPORT_SYMBOL_GPL(verify_pkcs7_signature); #endif /* CONFIG_SYSTEM_DATA_VERIFICATION */ + +#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING +void __init set_platform_trusted_keys(struct key *keyring) +{ + platform_trusted_keys = keyring; +} +#endif diff --git a/include/keys/system_keyring.h b/include/keys/system_keyring.h index 359c2f936..42a93eda3 100644 --- a/include/keys/system_keyring.h +++ b/include/keys/system_keyring.h @@ -61,5 +61,13 @@ static inline struct key *get_ima_blacklist_keyring(void) } #endif /* CONFIG_IMA_BLACKLIST_KEYRING */ +#if defined(CONFIG_INTEGRITY_PLATFORM_KEYRING) && \ + defined(CONFIG_SYSTEM_TRUSTED_KEYRING) +extern void __init set_platform_trusted_keys(struct key *keyring); +#else +static inline void set_platform_trusted_keys(struct key *keyring) +{ +} +#endif #endif /* _KEYS_SYSTEM_KEYRING_H */ diff --git a/include/linux/efi.h b/include/linux/efi.h index 34c255c2a..b8a6df5df 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -676,6 +676,10 @@ void efi_native_runtime_setup(void); #define EFI_IMAGE_SECURITY_DATABASE_GUID EFI_GUID(0xd719b2cb, 0x3d3a, 0x4596, 0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f) #define EFI_SHIM_LOCK_GUID EFI_GUID(0x605dab50, 0xe046, 0x4300, 0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23) +#define EFI_CERT_SHA256_GUID EFI_GUID(0xc1c41626, 0x504c, 0x4092, 0xac, 0xa9, 0x41, 0xf9, 0x36, 0x93, 0x43, 0x28) +#define EFI_CERT_X509_GUID EFI_GUID(0xa5c059a1, 0x94e4, 0x4aa7, 0x87, 0xb5, 0xab, 0x15, 0x5c, 0x2b, 0xf0, 0x72) +#define EFI_CERT_X509_SHA256_GUID EFI_GUID(0x3bd2a492, 0x96c0, 0x4079, 0xb4, 0x20, 0xfc, 0xf9, 0x8e, 0xf1, 0x03, 0xed) + /* * This GUID is used to pass to the kernel proper the struct screen_info * structure that was populated by the stub based on the GOP protocol instance @@ -947,6 +951,27 @@ typedef struct { efi_memory_desc_t entry[0]; } efi_memory_attributes_table_t; +typedef struct { + efi_guid_t signature_owner; + u8 signature_data[]; +} efi_signature_data_t; + +typedef struct { + efi_guid_t signature_type; + u32 signature_list_size; + u32 signature_header_size; + u32 signature_size; + u8 signature_header[]; + /* efi_signature_data_t signatures[][] */ +} efi_signature_list_t; + +typedef u8 efi_sha256_hash_t[32]; + +typedef struct { + efi_sha256_hash_t to_be_signed_hash; + efi_time_t time_of_revocation; +} efi_cert_x509_sha256_t; + /* * All runtime access to EFI goes through this structure: */ @@ -1129,6 +1154,15 @@ extern int efi_memattr_apply_permissions(struct mm_struct *mm, char * __init efi_md_typeattr_format(char *buf, size_t size, const efi_memory_desc_t *md); + +typedef void (*efi_element_handler_t)(const char *source, + const void *element_data, + size_t element_size); +extern int __init parse_efi_signature_list( + const char *source, + const void *data, size_t size, + efi_element_handler_t (*get_handler_for_guid)(const efi_guid_t *)); + /** * efi_range_is_wc - check the WC bit on an address range * @start: starting kvirt address diff --git a/include/linux/kexec.h b/include/linux/kexec.h index 98cf0fb09..542a15c91 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -147,6 +147,19 @@ extern const struct kexec_file_ops * const kexec_file_loaders[]; int kexec_image_probe_default(struct kimage *image, void *buf, unsigned long buf_len); +int kexec_image_post_load_cleanup_default(struct kimage *image); + +int wrap_kexec_file_load(int kernel_fd, int initrd_fd, + unsigned long cmdline_len, const char __user *cmdline_ptr, + unsigned long flags); + +/* + * If kexec_buf.mem is set to this value, kexec_locate_mem_hole() + * will try to allocate free memory. Arch may overwrite it. + */ +#ifndef KEXEC_BUF_MEM_UNKNOWN +#define KEXEC_BUF_MEM_UNKNOWN 0 +#endif /** * struct kexec_buf - parameters for finding a place for a buffer in memory @@ -187,8 +200,6 @@ int __weak arch_kexec_apply_relocations(struct purgatory_info *pi, const Elf_Shdr *relsec, const Elf_Shdr *symtab); -int __weak arch_kexec_walk_mem(struct kexec_buf *kbuf, - int (*func)(struct resource *, void *)); extern int kexec_add_buffer(struct kexec_buf *kbuf); int kexec_locate_mem_hole(struct kexec_buf *kbuf); diff --git a/include/linux/pe.h b/include/linux/pe.h index 143ce75be..3482b18a4 100644 --- a/include/linux/pe.h +++ b/include/linux/pe.h @@ -166,7 +166,7 @@ struct mz_hdr { uint16_t oem_info; /* oem specific */ uint16_t reserved1[10]; /* reserved */ uint32_t peaddr; /* address of pe header */ - char message[64]; /* message to print */ + char message[]; /* message to print */ }; struct mz_reloc { diff --git a/include/linux/verification.h b/include/linux/verification.h index cfa4730d6..018fb5f13 100644 --- a/include/linux/verification.h +++ b/include/linux/verification.h @@ -17,6 +17,7 @@ * should be used. */ #define VERIFY_USE_SECONDARY_KEYRING ((struct key *)1UL) +#define VERIFY_USE_PLATFORM_KEYRING ((struct key *)2UL) /* * The use to which an asymmetric key is being put. diff --git a/include/uapi/linux/kexec.h b/include/uapi/linux/kexec.h index ca3cebebd..9385ecba2 100644 --- a/include/uapi/linux/kexec.h +++ b/include/uapi/linux/kexec.h @@ -25,6 +25,7 @@ #define KEXEC_FILE_UNLOAD 0x00000001 #define KEXEC_FILE_ON_CRASH 0x00000002 #define KEXEC_FILE_NO_INITRAMFS 0x00000004 +#define KEXEC_FILE_LOAD_WRAP 0x100000000 /* These values match the ELF architecture values. * Unless there is a good reason that should continue to be the case. diff --git a/kernel/kexec.c b/kernel/kexec.c index 47dfad722..d44a55202 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -238,6 +238,16 @@ SYSCALL_DEFINE4(kexec_load, unsigned long, entry, unsigned long, nr_segments, { int result; + if (flags & KEXEC_FILE_LOAD_WRAP) { + int kernel_fd, initrd_fd; + + kernel_fd = entry >> 32; + initrd_fd = entry & 0x00000000ffffffff; + flags &= ~KEXEC_FILE_LOAD_WRAP; + return wrap_kexec_file_load(kernel_fd, initrd_fd, nr_segments, + (char __user *)segments, flags); + } + result = kexec_load_check(nr_segments, flags); if (result) return result; diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index 04f99368b..2a25db8dd 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -16,6 +16,7 @@ #include <linux/file.h> #include <linux/slab.h> #include <linux/kexec.h> +#include <linux/memblock.h> #include <linux/mutex.h> #include <linux/list.h> #include <linux/fs.h> @@ -78,7 +79,7 @@ void * __weak arch_kexec_kernel_image_load(struct kimage *image) return kexec_image_load_default(image); } -static int kexec_image_post_load_cleanup_default(struct kimage *image) +int kexec_image_post_load_cleanup_default(struct kimage *image) { if (!image->fops || !image->fops->cleanup) return 0; @@ -407,6 +408,96 @@ SYSCALL_DEFINE5(kexec_file_load, int, kernel_fd, int, initrd_fd, return ret; } +int wrap_kexec_file_load(int kernel_fd, int initrd_fd, + unsigned long cmdline_len, const char __user *cmdline_ptr, + unsigned long flags) +{ + int ret = 0, i; + struct kimage **dest_image, *image; + + /* We only trust the superuser with rebooting the system. */ + if (!capable(CAP_SYS_BOOT) || kexec_load_disabled) + return -EPERM; + + /* Make sure we have a legal set of flags */ + if (flags != (flags & KEXEC_FILE_FLAGS)) + return -EINVAL; + + image = NULL; + + if (!mutex_trylock(&kexec_mutex)) + return -EBUSY; + + dest_image = &kexec_image; + if (flags & KEXEC_FILE_ON_CRASH) { + dest_image = &kexec_crash_image; + if (kexec_crash_image) + arch_kexec_unprotect_crashkres(); + } + + if (flags & KEXEC_FILE_UNLOAD) + goto exchange; + + /* + * In case of crash, new kernel gets loaded in reserved region. It is + * same memory where old crash kernel might be loaded. Free any + * current crash dump kernel before we corrupt it. + */ + if (flags & KEXEC_FILE_ON_CRASH) + kimage_free(xchg(&kexec_crash_image, NULL)); + + ret = kimage_file_alloc_init(&image, kernel_fd, initrd_fd, cmdline_ptr, + cmdline_len, flags); + if (ret) + goto out; + + ret = machine_kexec_prepare(image); + if (ret) + goto out; + + /* + * Some architecture(like S390) may touch the crash memory before + * machine_kexec_prepare(), we must copy vmcoreinfo data after it. + */ + ret = kimage_crash_copy_vmcoreinfo(image); + if (ret) + goto out; + + ret = kexec_calculate_store_digests(image); + if (ret) + goto out; + + for (i = 0; i < image->nr_segments; i++) { + struct kexec_segment *ksegment; + + ksegment = &image->segment[i]; + pr_debug("Loading segment %d: buf=0x%p bufsz=0x%zx mem=0x%lx memsz=0x%zx\n", + i, ksegment->buf, ksegment->bufsz, ksegment->mem, + ksegment->memsz); + + ret = kimage_load_segment(image, &image->segment[i]); + if (ret) + goto out; + } + + kimage_terminate(image); + + /* + * Free up any temporary buffers allocated which are not needed + * after image has been loaded + */ + kimage_file_post_load_cleanup(image); +exchange: + image = xchg(dest_image, image); +out: + if ((flags & KEXEC_FILE_ON_CRASH) && kexec_crash_image) + arch_kexec_protect_crashkres(); + + mutex_unlock(&kexec_mutex); + kimage_free(image); + return ret; +} + static int locate_mem_hole_top_down(unsigned long start, unsigned long end, struct kexec_buf *kbuf) { @@ -501,8 +592,60 @@ static int locate_mem_hole_callback(struct resource *res, void *arg) return locate_mem_hole_bottom_up(start, end, kbuf); } +#ifdef CONFIG_ARCH_DISCARD_MEMBLOCK +static int kexec_walk_memblock(struct kexec_buf *kbuf, + int (*func)(struct resource *, void *)) +{ + return 0; +} +#else +static int kexec_walk_memblock(struct kexec_buf *kbuf, + int (*func)(struct resource *, void *)) +{ + int ret = 0; + u64 i; + phys_addr_t mstart, mend; + struct resource res = { }; + + if (kbuf->image->type == KEXEC_TYPE_CRASH) + return func(&crashk_res, kbuf); + + if (kbuf->top_down) { + for_each_free_mem_range_reverse(i, NUMA_NO_NODE, MEMBLOCK_NONE, + &mstart, &mend, NULL) { + /* + * In memblock, end points to the first byte after the + * range while in kexec, end points to the last byte + * in the range. + */ + res.start = mstart; + res.end = mend - 1; + ret = func(&res, kbuf); + if (ret) + break; + } + } else { + for_each_free_mem_range(i, NUMA_NO_NODE, MEMBLOCK_NONE, + &mstart, &mend, NULL) { + /* + * In memblock, end points to the first byte after the + * range while in kexec, end points to the last byte + * in the range. + */ + res.start = mstart; + res.end = mend - 1; + ret = func(&res, kbuf); + if (ret) + break; + } + } + + return ret; +} +#endif + /** - * arch_kexec_walk_mem - call func(data) on free memory regions + * kexec_walk_resources - call func(data) on free memory regions * @kbuf: Context info for the search. Also passed to @func. * @func: Function to call for each memory region. * @@ -510,8 +653,8 @@ static int locate_mem_hole_callback(struct resource *res, void *arg) * and that value will be returned. If all free regions are visited without * func returning non-zero, then zero will be returned. */ -int __weak arch_kexec_walk_mem(struct kexec_buf *kbuf, - int (*func)(struct resource *, void *)) +static int kexec_walk_resources(struct kexec_buf *kbuf, + int (*func)(struct resource *, void *)) { if (kbuf->image->type == KEXEC_TYPE_CRASH) return walk_iomem_res_desc(crashk_res.desc, @@ -534,7 +677,14 @@ int kexec_locate_mem_hole(struct kexec_buf *kbuf) { int ret; - ret = arch_kexec_walk_mem(kbuf, locate_mem_hole_callback); + /* Arch knows where to place */ + if (kbuf->mem != KEXEC_BUF_MEM_UNKNOWN) + return 0; + + if (IS_ENABLED(CONFIG_ARCH_DISCARD_MEMBLOCK)) + ret = kexec_walk_resources(kbuf, locate_mem_hole_callback); + else + ret = kexec_walk_memblock(kbuf, locate_mem_hole_callback); return ret == 1 ? 0 : -EADDRNOTAVAIL; } diff --git a/lib/Makefile b/lib/Makefile index 01f8051b4..455797430 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -213,7 +213,7 @@ KASAN_SANITIZE_stackdepot.o := n KCOV_INSTRUMENT_stackdepot.o := n libfdt_files = fdt.o fdt_ro.o fdt_wip.o fdt_rw.o fdt_sw.o fdt_strerror.o \ - fdt_empty_tree.o + fdt_empty_tree.o fdt_addresses.o $(foreach file, $(libfdt_files), \ $(eval CFLAGS_$(file) = -I$(src)/../scripts/dtc/libfdt)) lib-$(CONFIG_LIBFDT) += $(libfdt_files) diff --git a/lib/fdt_addresses.c b/lib/fdt_addresses.c new file mode 100644 index 000000000..23610bcf3 --- /dev/null +++ b/lib/fdt_addresses.c @@ -0,0 +1,2 @@ +#include <linux/libfdt_env.h> +#include "../scripts/dtc/libfdt/fdt_addresses.c" diff --git a/scripts/dtc/libfdt/fdt_addresses.c b/scripts/dtc/libfdt/fdt_addresses.c index eff4dbcc7..8211d00ba 100644 --- a/scripts/dtc/libfdt/fdt_addresses.c +++ b/scripts/dtc/libfdt/fdt_addresses.c @@ -94,3 +94,50 @@ int fdt_size_cells(const void *fdt, int nodeoffset) return val; } + +/* This function assumes that [address|size]_cells is 1 or 2 */ +int fdt_appendprop_addrrange(void *fdt, int parent, int nodeoffset, + const char *name, uint64_t addr, uint64_t size) +{ + int addr_cells, size_cells, ret; + uint8_t data[sizeof(fdt64_t) * 2], *prop; + + ret = fdt_address_cells(fdt, parent); + if (ret < 0) + return ret; + addr_cells = ret; + + ret = fdt_size_cells(fdt, parent); + if (ret < 0) + return ret; + size_cells = ret; + + /* check validity of address */ + prop = data; + if (addr_cells == 1) { + if ((addr > UINT32_MAX) || ((UINT32_MAX + 1 - addr) < size)) + return -FDT_ERR_BADVALUE; + + fdt32_st(prop, (uint32_t)addr); + } else if (addr_cells == 2) { + fdt64_st(prop, addr); + } else { + return -FDT_ERR_BADNCELLS; + } + + /* check validity of size */ + prop += addr_cells * sizeof(fdt32_t); + if (size_cells == 1) { + if (size > UINT32_MAX) + return -FDT_ERR_BADVALUE; + + fdt32_st(prop, (uint32_t)size); + } else if (size_cells == 2) { + fdt64_st(prop, size); + } else { + return -FDT_ERR_BADNCELLS; + } + + return fdt_appendprop(fdt, nodeoffset, name, data, + (addr_cells + size_cells) * sizeof(fdt32_t)); +} diff --git a/scripts/dtc/libfdt/libfdt.h b/scripts/dtc/libfdt/libfdt.h index 1e27780e1..da72b54c4 100644 --- a/scripts/dtc/libfdt/libfdt.h +++ b/scripts/dtc/libfdt/libfdt.h @@ -153,6 +153,30 @@ static inline void *fdt_offset_ptr_w(void *fdt, int offset, int checklen) uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset); +static inline void fdt32_st(void *property, uint32_t value) +{ + uint8_t *bp = property; + + bp[0] = value >> 24; + bp[1] = (value >> 16) & 0xff; + bp[2] = (value >> 8) & 0xff; + bp[3] = value & 0xff; +} + +static inline void fdt64_st(void *property, uint64_t value) +{ + uint8_t *bp = property; + + bp[0] = value >> 56; + bp[1] = (value >> 48) & 0xff; + bp[2] = (value >> 40) & 0xff; + bp[3] = (value >> 32) & 0xff; + bp[4] = (value >> 24) & 0xff; + bp[5] = (value >> 16) & 0xff; + bp[6] = (value >> 8) & 0xff; + bp[7] = value & 0xff; +} + /**********************************************************************/ /* Traversal functions */ /**********************************************************************/ @@ -1765,6 +1789,43 @@ static inline int fdt_appendprop_cell(void *fdt, int nodeoffset, #define fdt_appendprop_string(fdt, nodeoffset, name, str) \ fdt_appendprop((fdt), (nodeoffset), (name), (str), strlen(str)+1) +/** + * fdt_appendprop_addrrange - append a address range property + * @fdt: pointer to the device tree blob + * @parent: offset of the parent node + * @nodeoffset: offset of the node to add a property at + * @name: name of property + * @addr: start address of a given range + * @size: size of a given range + * + * fdt_appendprop_addrrange() appends an address range value (start + * address and size) to the value of the named property in the given + * node, or creates a new property with that value if it does not + * already exist. + * If "name" is not specified, a default "reg" is used. + * Cell sizes are determined by parent's #address-cells and #size-cells. + * + * This function may insert data into the blob, and will therefore + * change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid + * #address-cells property + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADVALUE, addr or size doesn't fit to respective cells size + * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to + * contain a new property + * -FDT_ERR_TRUNCATED, standard meanings + */ +int fdt_appendprop_addrrange(void *fdt, int parent, int nodeoffset, + const char *name, uint64_t addr, uint64_t size); + /** * fdt_delprop - delete a property * @fdt: pointer to the device tree blob diff --git a/security/integrity/Kconfig b/security/integrity/Kconfig index da9565891..4b4d2aeef 100644 --- a/security/integrity/Kconfig +++ b/security/integrity/Kconfig @@ -51,6 +51,17 @@ config INTEGRITY_TRUSTED_KEYRING .evm keyrings be signed by a key on the system trusted keyring. +config INTEGRITY_PLATFORM_KEYRING + bool "Provide keyring for platform/firmware trusted keys" + depends on INTEGRITY_ASYMMETRIC_KEYS + depends on SYSTEM_BLACKLIST_KEYRING + depends on EFI + help + Provide a separate, distinct keyring for platform trusted keys, which + the kernel automatically populates during initialization from values + provided by the platform for verifying the kexec'ed kerned image + and, possibly, the initramfs signature. + config INTEGRITY_AUDIT bool "Enables integrity auditing support " depends on AUDIT diff --git a/security/integrity/Makefile b/security/integrity/Makefile index 04d6e462b..86df9aba8 100644 --- a/security/integrity/Makefile +++ b/security/integrity/Makefile @@ -9,6 +9,11 @@ integrity-y := iint.o integrity-$(CONFIG_INTEGRITY_AUDIT) += integrity_audit.o integrity-$(CONFIG_INTEGRITY_SIGNATURE) += digsig.o integrity-$(CONFIG_INTEGRITY_ASYMMETRIC_KEYS) += digsig_asymmetric.o +integrity-$(CONFIG_INTEGRITY_PLATFORM_KEYRING) += platform_certs/platform_keyring.o \ + platform_certs/efi_parser.o \ + platform_certs/load_uefi.o +obj-$(CONFIG_LOAD_UEFI_KEYS) += platform_certs/load_uefi.o +$(obj)/load_uefi.o: KBUILD_CFLAGS += -fshort-wchar subdir-$(CONFIG_IMA) += ima obj-$(CONFIG_IMA) += ima/ diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c index 9bb0a7f28..c585ca8db 100644 --- a/security/integrity/digsig.c +++ b/security/integrity/digsig.c @@ -35,6 +35,7 @@ static const char *keyring_name[INTEGRITY_KEYRING_MAX] = { ".ima", #endif "_module", + ".platform", }; #ifdef CONFIG_INTEGRITY_TRUSTED_KEYRING @@ -79,12 +80,42 @@ int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen, return -EOPNOTSUPP; } -int __init integrity_init_keyring(const unsigned int id) +static int __init __integrity_init_keyring(const unsigned int id, + key_perm_t perm, + struct key_restriction *restriction) { const struct cred *cred = current_cred(); - struct key_restriction *restriction; int err = 0; + keyring[id] = keyring_alloc(keyring_name[id], KUIDT_INIT(0), + KGIDT_INIT(0), cred, perm, + KEY_ALLOC_NOT_IN_QUOTA, restriction, NULL); + if (IS_ERR(keyring[id])) { + err = PTR_ERR(keyring[id]); + pr_info("Can't allocate %s keyring (%d)\n", + keyring_name[id], err); + keyring[id] = NULL; + } else { + if (id == INTEGRITY_KEYRING_PLATFORM) + set_platform_trusted_keys(keyring[id]); + } + + return err; +} + +int __init integrity_init_keyring(const unsigned int id) +{ + struct key_restriction *restriction; + key_perm_t perm; + + perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW + | KEY_USR_READ | KEY_USR_SEARCH; + + if (id == INTEGRITY_KEYRING_PLATFORM) { + restriction = NULL; + goto out; + } + if (!init_keyring) return 0; @@ -93,32 +124,43 @@ int __init integrity_init_keyring(const unsigned int id) return -ENOMEM; restriction->check = restrict_link_to_ima; + perm |= KEY_USR_WRITE; - keyring[id] = keyring_alloc(keyring_name[id], KUIDT_INIT(0), - KGIDT_INIT(0), cred, - ((KEY_POS_ALL & ~KEY_POS_SETATTR) | - KEY_USR_VIEW | KEY_USR_READ | - KEY_USR_WRITE | KEY_USR_SEARCH), - KEY_ALLOC_NOT_IN_QUOTA, - restriction, NULL); - if (IS_ERR(keyring[id])) { - err = PTR_ERR(keyring[id]); - pr_info("Can't allocate %s keyring (%d)\n", - keyring_name[id], err); - keyring[id] = NULL; +out: + return __integrity_init_keyring(id, perm, restriction); +} + +int __init integrity_add_key(const unsigned int id, const void *data, + off_t size, key_perm_t perm) +{ + key_ref_t key; + int rc = 0; + + if (!keyring[id]) + return -EINVAL; + + key = key_create_or_update(make_key_ref(keyring[id], 1), "asymmetric", + NULL, data, size, perm, + KEY_ALLOC_NOT_IN_QUOTA); + if (IS_ERR(key)) { + rc = PTR_ERR(key); + pr_err("Problem loading X.509 certificate %d\n", rc); + } else { + pr_notice("Loaded X.509 cert '%s'\n", + key_ref_to_ptr(key)->description); + key_ref_put(key); } - return err; + + return rc; + } int __init integrity_load_x509(const unsigned int id, const char *path) { - key_ref_t key; void *data; loff_t size; int rc; - - if (!keyring[id]) - return -EINVAL; + key_perm_t perm; rc = kernel_read_file_from_path(path, &data, &size, 0, READING_X509_CERTIFICATE); @@ -127,23 +169,21 @@ int __init integrity_load_x509(const unsigned int id, const char *path) return rc; } - key = key_create_or_update(make_key_ref(keyring[id], 1), - "asymmetric", - NULL, - data, - size, - ((KEY_POS_ALL & ~KEY_POS_SETATTR) | - KEY_USR_VIEW | KEY_USR_READ), - KEY_ALLOC_NOT_IN_QUOTA); - if (IS_ERR(key)) { - rc = PTR_ERR(key); - pr_err("Problem loading X.509 certificate (%d): %s\n", - rc, path); - } else { - pr_notice("Loaded X.509 cert '%s': %s\n", - key_ref_to_ptr(key)->description, path); - key_ref_put(key); - } + perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW | KEY_USR_READ; + + pr_info("Loading X.509 certificate: %s\n", path); + rc = integrity_add_key(id, (const void *)data, size, perm); + vfree(data); - return 0; + return rc; +} + +int __init integrity_load_cert(const unsigned int id, const char *source, + const void *data, size_t len, key_perm_t perm) +{ + if (!data) + return -EINVAL; + + pr_info("Loading X.509 certificate: %s\n", source); + return integrity_add_key(id, data, len, perm); } diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c index 08aabf763..ad285f17d 100644 --- a/security/integrity/ima/ima_appraise.c +++ b/security/integrity/ima/ima_appraise.c @@ -294,12 +294,22 @@ int ima_appraise_measurement(enum ima_hooks func, case EVM_IMA_XATTR_DIGSIG: set_bit(IMA_DIGSIG, &iint->atomic_flags); rc = integrity_digsig_verify(INTEGRITY_KEYRING_IMA, - (const char *)xattr_value, rc, + (const char *)xattr_value, + xattr_len, iint->ima_hash->digest, iint->ima_hash->length); if (rc == -EOPNOTSUPP) { status = INTEGRITY_UNKNOWN; - } else if (rc) { + break; + } + if (IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING) && rc && + func == KEXEC_KERNEL_CHECK) + rc = integrity_digsig_verify(INTEGRITY_KEYRING_PLATFORM, + (const char *)xattr_value, + xattr_len, + iint->ima_hash->digest, + iint->ima_hash->length); + if (rc) { cause = "invalid-signature"; status = INTEGRITY_FAIL; } else { diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h index 0ec551223..0750bab0d 100644 --- a/security/integrity/integrity.h +++ b/security/integrity/integrity.h @@ -142,7 +142,8 @@ int integrity_kernel_read(struct file *file, loff_t offset, #define INTEGRITY_KEYRING_EVM 0 #define INTEGRITY_KEYRING_IMA 1 #define INTEGRITY_KEYRING_MODULE 2 -#define INTEGRITY_KEYRING_MAX 3 +#define INTEGRITY_KEYRING_PLATFORM 3 +#define INTEGRITY_KEYRING_MAX 4 extern struct dentry *integrity_dir; @@ -153,6 +154,8 @@ int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen, int __init integrity_init_keyring(const unsigned int id); int __init integrity_load_x509(const unsigned int id, const char *path); +int __init integrity_load_cert(const unsigned int id, const char *source, + const void *data, size_t len, key_perm_t perm); #else static inline int integrity_digsig_verify(const unsigned int id, @@ -166,6 +169,14 @@ static inline int integrity_init_keyring(const unsigned int id) { return 0; } + +static inline int __init integrity_load_cert(const unsigned int id, + const char *source, + const void *data, size_t len, + key_perm_t perm) +{ + return 0; +} #endif /* CONFIG_INTEGRITY_SIGNATURE */ #ifdef CONFIG_INTEGRITY_ASYMMETRIC_KEYS @@ -222,3 +233,13 @@ integrity_audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type) } #endif + +#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING +void __init add_to_platform_keyring(const char *source, const void *data, + size_t len); +#else +static inline void __init add_to_platform_keyring(const char *source, + const void *data, size_t len) +{ +} +#endif diff --git a/security/integrity/platform_certs/efi_parser.c b/security/integrity/platform_certs/efi_parser.c new file mode 100644 index 000000000..18f01f36f --- /dev/null +++ b/security/integrity/platform_certs/efi_parser.c @@ -0,0 +1,108 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* EFI signature/key/certificate list parser + * + * Copyright (C) 2012, 2016 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells(a)redhat.com) + */ + +#define pr_fmt(fmt) "EFI: "fmt +#include <linux/module.h> +#include <linux/printk.h> +#include <linux/err.h> +#include <linux/efi.h> + +/** + * parse_efi_signature_list - Parse an EFI signature list for certificates + * @source: The source of the key + * @data: The data blob to parse + * @size: The size of the data blob + * @get_handler_for_guid: Get the handler func for the sig type (or NULL) + * + * Parse an EFI signature list looking for elements of interest. A list is + * made up of a series of sublists, where all the elements in a sublist are of + * the same type, but sublists can be of different types. + * + * For each sublist encountered, the @get_handler_for_guid function is called + * with the type specifier GUID and returns either a pointer to a function to + * handle elements of that type or NULL if the type is not of interest. + * + * If the sublist is of interest, each element is passed to the handler + * function in turn. + * + * Error EBADMSG is returned if the list doesn't parse correctly and 0 is + * returned if the list was parsed correctly. No error can be returned from + * the @get_handler_for_guid function or the element handler function it + * returns. + */ +int __init parse_efi_signature_list( + const char *source, + const void *data, size_t size, + efi_element_handler_t (*get_handler_for_guid)(const efi_guid_t *)) +{ + efi_element_handler_t handler; + unsigned int offs = 0; + + pr_devel("-->%s(,%zu)\n", __func__, size); + + while (size > 0) { + const efi_signature_data_t *elem; + efi_signature_list_t list; + size_t lsize, esize, hsize, elsize; + + if (size < sizeof(list)) + return -EBADMSG; + + memcpy(&list, data, sizeof(list)); + pr_devel("LIST[%04x] guid=%pUl ls=%x hs=%x ss=%x\n", + offs, + list.signature_type.b, list.signature_list_size, + list.signature_header_size, list.signature_size); + + lsize = list.signature_list_size; + hsize = list.signature_header_size; + esize = list.signature_size; + elsize = lsize - sizeof(list) - hsize; + + if (lsize > size) { + pr_devel("<--%s() = -EBADMSG [overrun @%x]\n", + __func__, offs); + return -EBADMSG; + } + + if (lsize < sizeof(list) || + lsize - sizeof(list) < hsize || + esize < sizeof(*elem) || + elsize < esize || + elsize % esize != 0) { + pr_devel("- bad size combo @%x\n", offs); + return -EBADMSG; + } + + handler = get_handler_for_guid(&list.signature_type); + if (!handler) { + data += lsize; + size -= lsize; + offs += lsize; + continue; + } + + data += sizeof(list) + hsize; + size -= sizeof(list) + hsize; + offs += sizeof(list) + hsize; + + for (; elsize > 0; elsize -= esize) { + elem = data; + + pr_devel("ELEM[%04x]\n", offs); + handler(source, + &elem->signature_data, + esize - sizeof(*elem)); + + data += esize; + size -= esize; + offs += esize; + } + } + + return 0; +} diff --git a/security/integrity/platform_certs/load_uefi.c b/security/integrity/platform_certs/load_uefi.c new file mode 100644 index 000000000..81b19c528 --- /dev/null +++ b/security/integrity/platform_certs/load_uefi.c @@ -0,0 +1,194 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/cred.h> +#include <linux/err.h> +#include <linux/efi.h> +#include <linux/slab.h> +#include <keys/asymmetric-type.h> +#include <keys/system_keyring.h> +#include "../integrity.h" + +static efi_guid_t efi_cert_x509_guid __initdata = EFI_CERT_X509_GUID; +static efi_guid_t efi_cert_x509_sha256_guid __initdata = + EFI_CERT_X509_SHA256_GUID; +static efi_guid_t efi_cert_sha256_guid __initdata = EFI_CERT_SHA256_GUID; + +/* + * Look to see if a UEFI variable called MokIgnoreDB exists and return true if + * it does. + * + * This UEFI variable is set by the shim if a user tells the shim to not use + * the certs/hashes in the UEFI db variable for verification purposes. If it + * is set, we should ignore the db variable also and the true return indicates + * this. + */ +static __init bool uefi_check_ignore_db(void) +{ + efi_status_t status; + unsigned int db = 0; + unsigned long size = sizeof(db); + efi_guid_t guid = EFI_SHIM_LOCK_GUID; + + status = efi.get_variable(L"MokIgnoreDB", &guid, NULL, &size, &db); + return status == EFI_SUCCESS; +} + +/* + * Get a certificate list blob from the named EFI variable. + */ +static __init void *get_cert_list(efi_char16_t *name, efi_guid_t *guid, + unsigned long *size) +{ + efi_status_t status; + unsigned long lsize = 4; + unsigned long tmpdb[4]; + void *db; + + status = efi.get_variable(name, guid, NULL, &lsize, &tmpdb); + if (status != EFI_BUFFER_TOO_SMALL) { + pr_err("Couldn't get size: 0x%lx\n", status); + return NULL; + } + + db = kmalloc(lsize, GFP_KERNEL); + if (!db) + return NULL; + + status = efi.get_variable(name, guid, NULL, &lsize, db); + if (status != EFI_SUCCESS) { + kfree(db); + pr_err("Error reading db var: 0x%lx\n", status); + return NULL; + } + + *size = lsize; + return db; +} + +/* + * Blacklist a hash. + */ +static __init void uefi_blacklist_hash(const char *source, const void *data, + size_t len, const char *type, + size_t type_len) +{ + char *hash, *p; + + hash = kmalloc(type_len + len * 2 + 1, GFP_KERNEL); + if (!hash) + return; + p = memcpy(hash, type, type_len); + p += type_len; + bin2hex(p, data, len); + p += len * 2; + *p = 0; + + mark_hash_blacklisted(hash); + kfree(hash); +} + +/* + * Blacklist an X509 TBS hash. + */ +static __init void uefi_blacklist_x509_tbs(const char *source, + const void *data, size_t len) +{ + uefi_blacklist_hash(source, data, len, "tbs:", 4); +} + +/* + * Blacklist the hash of an executable. + */ +static __init void uefi_blacklist_binary(const char *source, + const void *data, size_t len) +{ + uefi_blacklist_hash(source, data, len, "bin:", 4); +} + +/* + * Return the appropriate handler for particular signature list types found in + * the UEFI db and MokListRT tables. + */ +static __init efi_element_handler_t get_handler_for_db(const efi_guid_t * + sig_type) +{ + if (efi_guidcmp(*sig_type, efi_cert_x509_guid) == 0) + return add_to_platform_keyring; + return 0; +} + +/* + * Return the appropriate handler for particular signature list types found in + * the UEFI dbx and MokListXRT tables. + */ +static __init efi_element_handler_t get_handler_for_dbx(const efi_guid_t * + sig_type) +{ + if (efi_guidcmp(*sig_type, efi_cert_x509_sha256_guid) == 0) + return uefi_blacklist_x509_tbs; + if (efi_guidcmp(*sig_type, efi_cert_sha256_guid) == 0) + return uefi_blacklist_binary; + return 0; +} + +/* + * Load the certs contained in the UEFI databases into the platform trusted + * keyring and the UEFI blacklisted X.509 cert SHA256 hashes into the blacklist + * keyring. + */ +static int __init load_uefi_certs(void) +{ + efi_guid_t secure_var = EFI_IMAGE_SECURITY_DATABASE_GUID; + efi_guid_t mok_var = EFI_SHIM_LOCK_GUID; + void *db = NULL, *dbx = NULL, *mok = NULL; + unsigned long dbsize = 0, dbxsize = 0, moksize = 0; + int rc = 0; + + if (!efi.get_variable) + return false; + + /* Get db, MokListRT, and dbx. They might not exist, so it isn't + * an error if we can't get them. + */ + if (!uefi_check_ignore_db()) { + db = get_cert_list(L"db", &secure_var, &dbsize); + if (!db) { + pr_err("MODSIGN: Couldn't get UEFI db list\n"); + } else { + rc = parse_efi_signature_list("UEFI:db", + db, dbsize, get_handler_for_db); + if (rc) + pr_err("Couldn't parse db signatures: %d\n", + rc); + kfree(db); + } + } + + mok = get_cert_list(L"MokListRT", &mok_var, &moksize); + if (!mok) { + pr_info("Couldn't get UEFI MokListRT\n"); + } else { + rc = parse_efi_signature_list("UEFI:MokListRT", + mok, moksize, get_handler_for_db); + if (rc) + pr_err("Couldn't parse MokListRT signatures: %d\n", rc); + kfree(mok); + } + + dbx = get_cert_list(L"dbx", &secure_var, &dbxsize); + if (!dbx) { + pr_info("Couldn't get UEFI dbx list\n"); + } else { + rc = parse_efi_signature_list("UEFI:dbx", + dbx, dbxsize, + get_handler_for_dbx); + if (rc) + pr_err("Couldn't parse dbx signatures: %d\n", rc); + kfree(dbx); + } + + return rc; +} +late_initcall(load_uefi_certs); diff --git a/security/integrity/platform_certs/platform_keyring.c b/security/integrity/platform_certs/platform_keyring.c new file mode 100644 index 000000000..bcafd7387 --- /dev/null +++ b/security/integrity/platform_certs/platform_keyring.c @@ -0,0 +1,58 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Platform keyring for firmware/platform keys + * + * Copyright IBM Corporation, 2018 + * Author(s): Nayna Jain <nayna(a)linux.ibm.com> + */ + +#include <linux/export.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/cred.h> +#include <linux/err.h> +#include <linux/slab.h> +#include "../integrity.h" + +/** + * add_to_platform_keyring - Add to platform keyring without validation. + * @source: Source of key + * @data: The blob holding the key + * @len: The length of the data blob + * + * Add a key to the platform keyring without checking its trust chain. This + * is available only during kernel initialisation. + */ +void __init add_to_platform_keyring(const char *source, const void *data, + size_t len) +{ + key_perm_t perm; + int rc; + + perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW; + + rc = integrity_load_cert(INTEGRITY_KEYRING_PLATFORM, source, data, len, + perm); + if (rc) + pr_info("Error adding keys to platform keyring %s\n", source); +} + +/* + * Create the trusted keyrings. + */ +static __init int platform_keyring_init(void) +{ + int rc; + + rc = integrity_init_keyring(INTEGRITY_KEYRING_PLATFORM); + if (rc) + return rc; + + pr_notice("Platform Keyring initialized\n"); + return 0; +} + +/* + * Must be initialised before we try and load the keys into the keyring. + */ +device_initcall(platform_keyring_init); -- 2.27.0

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[PATCH kernel-4.19] scsi: hisi_sas: set sense data when the sas disk's I/O abnormally completed
by Yang Yingliang 23 Sep '21

23 Sep '21

From: yangxingui <yangxingui(a)huawei.com> driver inclusion category: bugfix bugzilla: NA CVE: NA --------------------------- The sense data of the sas disk is used by the kernel and upper layers to perform some policies on disks when the I/O is abnormally completed. Such as the logs as follow, if the driver transmit sense data to the upper layer, the disk may be repaired by remap policy of disk management system. [Wed Sep 15 13:03:04 2021] hisi_sas_v3_hw 0000:74:02.0: erroneous completion iptt=3342 task= pK-error dev id=0 sas_addr=0x5541310520e0b000 CQ hdr: 0x1503 0xd0e 0x0 0x20000 Error info: 0x1200 0x0 0x0 0x40 [Wed Sep 15 13:03:04 2021] hisi_sas_v3_hw 0000:74:02.0: data underflow, rsp_code:0x72, sensekey:0x3, ASC:0x11, ASCQ:0x0. Signed-off-by: yangxingui <yangxingui(a)huawei.com> Reviewed-by: ouyangdelong < ouyangdelong(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- drivers/scsi/hisi_sas/hisi_sas.h | 2 ++ drivers/scsi/hisi_sas/hisi_sas_main.c | 17 +++++++++++++++++ drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 1 + 3 files changed, 20 insertions(+) diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h index eae0e533ce7fc..193fc960d87fd 100644 --- a/drivers/scsi/hisi_sas/hisi_sas.h +++ b/drivers/scsi/hisi_sas/hisi_sas.h @@ -571,6 +571,8 @@ extern void hisi_sas_free(struct hisi_hba *hisi_hba); extern u8 hisi_sas_get_ata_protocol(struct host_to_dev_fis *fis, int direction); extern struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port); +extern void hisi_sas_set_sense_data(struct sas_task *task, + struct hisi_sas_slot *slot); extern void hisi_sas_sata_done(struct sas_task *task, struct hisi_sas_slot *slot); extern int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba); diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index f944371ac3133..51555cfc40578 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -105,6 +105,23 @@ u8 hisi_sas_get_ata_protocol(struct host_to_dev_fis *fis, int direction) } EXPORT_SYMBOL_GPL(hisi_sas_get_ata_protocol); +void hisi_sas_set_sense_data(struct sas_task *task, + struct hisi_sas_slot *slot) +{ + struct ssp_response_iu *iu = + hisi_sas_status_buf_addr_mem(slot) + + sizeof(struct hisi_sas_err_record); + if (iu->datapres == 2) { + struct task_status_struct *ts = &task->task_status; + + ts->buf_valid_size = + min_t(int, SAS_STATUS_BUF_SIZE, + be32_to_cpu(iu->sense_data_len)); + memcpy(ts->buf, iu->sense_data, ts->buf_valid_size); + } +} +EXPORT_SYMBOL_GPL(hisi_sas_set_sense_data); + void hisi_sas_sata_done(struct sas_task *task, struct hisi_sas_slot *slot) { diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index a9f53dbb91679..06b4f2db62f7b 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -2234,6 +2234,7 @@ slot_err_v3_hw(struct hisi_hba *hisi_hba, struct sas_task *task, ts->stat = SAS_OPEN_REJECT; ts->open_rej_reason = SAS_OREJ_RSVD_RETRY; } + hisi_sas_set_sense_data(task, slot); break; case SAS_PROTOCOL_SATA: case SAS_PROTOCOL_STP: -- 2.25.1

1 0

[PATCH kernel-4.19 1/2] kyber: introduce kyber_depth_updated()
by Yang Yingliang 23 Sep '21

23 Sep '21

From: Yang Yang <yang.yang(a)vivo.com> mainline inclusion from mainline-5.12-rc1 commit ffa772cfe9356ce94d3061335c2681f60e7c1c5b category: bugfix bugzilla: 182133 CVE: NA ------------------------------------------------- Hang occurs when user changes the scheduler queue depth, by writing to the 'nr_requests' sysfs file of that device. The details of the environment that we found the problem are as follows: an eMMC block device total driver tags: 16 default queue_depth: 32 kqd->async_depth initialized in kyber_init_sched() with queue_depth=32 Then we change queue_depth to 256, by writing to the 'nr_requests' sysfs file. But kqd->async_depth don't be updated after queue_depth changes. Now the value of async depth is too small for queue_depth=256, this may cause hang. This patch introduces kyber_depth_updated(), so that kyber can update async depth when queue depth changes. Signed-off-by: Yang Yang <yang.yang(a)vivo.com> Reviewed-by: Omar Sandoval <osandov(a)fb.com> Signed-off-by: Jens Axboe <axboe(a)kernel.dk> Conflict: block/kyber-iosched.c Signed-off-by: Yu Kuai <yukuai3(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- block/kyber-iosched.c | 29 +++++++++++++---------------- 1 file changed, 13 insertions(+), 16 deletions(-) diff --git a/block/kyber-iosched.c b/block/kyber-iosched.c index a1660bafc9124..9eeb60d97f0ca 100644 --- a/block/kyber-iosched.c +++ b/block/kyber-iosched.c @@ -288,15 +288,6 @@ static void kyber_stat_timer_fn(struct blk_stat_callback *cb) blk_stat_activate_msecs(kqd->cb, 100); } -static unsigned int kyber_sched_tags_shift(struct kyber_queue_data *kqd) -{ - /* - * All of the hardware queues have the same depth, so we can just grab - * the shift of the first one. - */ - return kqd->q->queue_hw_ctx[0]->sched_tags->bitmap_tags.sb.shift; -} - static int kyber_bucket_fn(const struct request *rq) { return kyber_sched_domain(rq->cmd_flags); @@ -306,7 +297,6 @@ static struct kyber_queue_data *kyber_queue_data_alloc(struct request_queue *q) { struct kyber_queue_data *kqd; unsigned int max_tokens; - unsigned int shift; int ret = -ENOMEM; int i; @@ -341,9 +331,6 @@ static struct kyber_queue_data *kyber_queue_data_alloc(struct request_queue *q) sbitmap_queue_resize(&kqd->domain_tokens[i], kyber_depth[i]); } - shift = kyber_sched_tags_shift(kqd); - kqd->async_depth = (1U << shift) * KYBER_ASYNC_PERCENT / 100U; - kqd->read_lat_nsec = 2000000ULL; kqd->write_lat_nsec = 10000000ULL; @@ -403,9 +390,19 @@ static void kyber_ctx_queue_init(struct kyber_ctx_queue *kcq) INIT_LIST_HEAD(&kcq->rq_list[i]); } -static int kyber_init_hctx(struct blk_mq_hw_ctx *hctx, unsigned int hctx_idx) +static void kyber_depth_updated(struct blk_mq_hw_ctx *hctx) { struct kyber_queue_data *kqd = hctx->queue->elevator->elevator_data; + struct blk_mq_tags *tags = hctx->sched_tags; + unsigned int shift = tags->bitmap_tags.sb.shift; + + kqd->async_depth = (1U << shift) * KYBER_ASYNC_PERCENT / 100U; + + sbitmap_queue_min_shallow_depth(&tags->bitmap_tags, kqd->async_depth); +} + +static int kyber_init_hctx(struct blk_mq_hw_ctx *hctx, unsigned int hctx_idx) +{ struct kyber_hctx_data *khd; int i; @@ -446,8 +443,7 @@ static int kyber_init_hctx(struct blk_mq_hw_ctx *hctx, unsigned int hctx_idx) khd->batching = 0; hctx->sched_data = khd; - sbitmap_queue_min_shallow_depth(&hctx->sched_tags->bitmap_tags, - kqd->async_depth); + kyber_depth_updated(hctx); return 0; @@ -966,6 +962,7 @@ static struct elevator_type kyber_sched = { .completed_request = kyber_completed_request, .dispatch_request = kyber_dispatch_request, .has_work = kyber_has_work, + .depth_updated = kyber_depth_updated, }, .uses_mq = true, #ifdef CONFIG_BLK_DEBUG_FS -- 2.25.1

1 1

[PATCH kernel-4.19 openEuler-1.0-LTS] blk-mq: handle all throttled io in blk_cleanup_queue()
by Cheng Jian 22 Sep '21

22 Sep '21

From: Yu Kuai <yukuai3(a)huawei.com> hulk inclusion category: bugfix bugzilla: 182132 CVE: NA ------------------------------------------------- All throttled io will never be issued after blk_throtl_exit() in blk_cleanup_queue(), which will lead to hung. Thus handle throttled io before calling blk_throtl_exit() from blk_exit_queue(). Signed-off-by: Yu Kuai <yukuai3(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> --- block/blk-core.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/block/blk-core.c b/block/blk-core.c index 9d2a5a8c78d4..dd3719be9581 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -783,6 +783,16 @@ void blk_cleanup_queue(struct request_queue *q) */ blk_freeze_queue(q); + /* + * All throttled io will never be issued after blk_throtl_exit(), which + * will lead to hung. Thus we need to issue them before calling + * blk_throtl_exit() from blk_exit_queue(). + */ + if (q->mq_ops) { + spin_lock_irq(lock); + blkcg_drain_queue(q); + spin_unlock_irq(lock); + } rq_qos_exit(q); spin_lock_irq(lock); -- 2.25.1

1 0

[PATCH openEuler-1.0-LTS 1/7] memcg: enable accounting for pids in nested pid namespaces
by Yang Yingliang 22 Sep '21

22 Sep '21

From: Vasily Averin <vvs(a)virtuozzo.com> mainline inclusion from mainline-v5.15-rc1 commit fab827dbee8c2e06ca4ba000fa6c48bcf9054aba category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I4A0WD CVE: NA -------------------------------- Commit 5d097056c9a0 ("kmemcg: account certain kmem allocations to memcg") enabled memcg accounting for pids allocated from init_pid_ns.pid_cachep, but forgot to adjust the setting for nested pid namespaces. As a result, pid memory is not accounted exactly where it is really needed, inside memcg-limited containers with their own pid namespaces. Pid was one the first kernel objects enabled for memcg accounting. init_pid_ns.pid_cachep marked by SLAB_ACCOUNT and we can expect that any new pids in the system are memcg-accounted. Though recently I've noticed that it is wrong. nested pid namespaces creates own slab caches for pid objects, nested pids have increased size because contain id both for all parent and for own pid namespaces. The problem is that these slab caches are _NOT_ marked by SLAB_ACCOUNT, as a result any pids allocated in nested pid namespaces are not memcg-accounted. Pid struct in nested pid namespace consumes up to 500 bytes memory, 100000 such objects gives us up to ~50Mb unaccounted memory, this allow container to exceed assigned memcg limits. Link: https://lkml.kernel.org/r/8b6de616-fd1a-02c6-cbdb-976ecdcfa604@virtuozzo.com Fixes: 5d097056c9a0 ("kmemcg: account certain kmem allocations to memcg") Cc: stable(a)vger.kernel.org Signed-off-by: Vasily Averin <vvs(a)virtuozzo.com> Reviewed-by: Michal Koutný <mkoutny(a)suse.com> Reviewed-by: Shakeel Butt <shakeelb(a)google.com> Acked-by: Christian Brauner <christian.brauner(a)ubuntu.com> Acked-by: Roman Gushchin <guro(a)fb.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Johannes Weiner <hannes(a)cmpxchg.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> Signed-off-by: Li Ming <limingming.li(a)huawei.com> Signed-off-by: Lu Jialin <lujialin4(a)huawei.com> Reviewed-by: Xiu Jianfeng <xiujianfeng(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- kernel/pid_namespace.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index dd7a0e41d4016..ad95ca43b51ee 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -52,7 +52,8 @@ static struct kmem_cache *create_pid_cachep(unsigned int level) mutex_lock(&pid_caches_mutex); /* Name collision forces to do allocation under mutex. */ if (!*pkc) - *pkc = kmem_cache_create(name, len, 0, SLAB_HWCACHE_ALIGN, 0); + *pkc = kmem_cache_create(name, len, 0, + SLAB_HWCACHE_ALIGN | SLAB_ACCOUNT, 0); mutex_unlock(&pid_caches_mutex); /* current can fail, but someone else can succeed. */ return READ_ONCE(*pkc); -- 2.25.1

1 6

[PATCH openEuler-1.0-LTS] KVM: do not allow mapping valid but non-reference-counted pages
by Yang Yingliang 22 Sep '21

22 Sep '21

From: Nicholas Piggin <npiggin(a)gmail.com> stable inclusion from linux-4.19.199 commit 117777467bc015f0dc5fc079eeba0fa80c965149 CVE: CVE-2021-22543 -------------------------------- commit f8be156be163a052a067306417cd0ff679068c97 upstream. It's possible to create a region which maps valid but non-refcounted pages (e.g., tail pages of non-compound higher order allocations). These host pages can then be returned by gfn_to_page, gfn_to_pfn, etc., family of APIs, which take a reference to the page, which takes it from 0 to 1. When the reference is dropped, this will free the page incorrectly. Fix this by only taking a reference on valid pages if it was non-zero, which indicates it is participating in normal refcounting (and can be released with put_page). This addresses CVE-2021-22543. Signed-off-by: Nicholas Piggin <npiggin(a)gmail.com> Tested-by: Paolo Bonzini <pbonzini(a)redhat.com> Cc: stable(a)vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini(a)redhat.com> Signed-off-by: Ovidiu Panait <ovidiu.panait(a)windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> Reviewed-by: Xiu Jianfeng <xiujianfeng(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- virt/kvm/kvm_main.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 20c53b5cf4837..78bcd465c4f4f 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1484,6 +1484,13 @@ static bool vma_is_valid(struct vm_area_struct *vma, bool write_fault) return true; } +static int kvm_try_get_pfn(kvm_pfn_t pfn) +{ + if (kvm_is_reserved_pfn(pfn)) + return 1; + return get_page_unless_zero(pfn_to_page(pfn)); +} + static int hva_to_pfn_remapped(struct vm_area_struct *vma, unsigned long addr, bool *async, bool write_fault, bool *writable, @@ -1526,11 +1533,19 @@ static int hva_to_pfn_remapped(struct vm_area_struct *vma, * Whoever called remap_pfn_range is also going to call e.g. * unmap_mapping_range before the underlying pages are freed, * causing a call to our MMU notifier. + * + * Certain IO or PFNMAP mappings can be backed with valid + * struct pages, but be allocated without refcounting e.g., + * tail pages of non-compound higher order allocations, which + * would then underflow the refcount when the caller does the + * required put_page. Don't allow those pages here. */ - kvm_get_pfn(pfn); + if (!kvm_try_get_pfn(pfn)) + r = -EFAULT; *p_pfn = pfn; - return 0; + + return r; } /* -- 2.25.1

1 0

[PATCH kernel-4.19 1/7] memcg: enable accounting for pids in nested pid namespaces
by Yang Yingliang 22 Sep '21

22 Sep '21

From: Vasily Averin <vvs(a)virtuozzo.com> mainline inclusion from mainline-v5.15-rc1 commit fab827dbee8c2e06ca4ba000fa6c48bcf9054aba category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I4A0WD CVE: NA -------------------------------- Commit 5d097056c9a0 ("kmemcg: account certain kmem allocations to memcg") enabled memcg accounting for pids allocated from init_pid_ns.pid_cachep, but forgot to adjust the setting for nested pid namespaces. As a result, pid memory is not accounted exactly where it is really needed, inside memcg-limited containers with their own pid namespaces. Pid was one the first kernel objects enabled for memcg accounting. init_pid_ns.pid_cachep marked by SLAB_ACCOUNT and we can expect that any new pids in the system are memcg-accounted. Though recently I've noticed that it is wrong. nested pid namespaces creates own slab caches for pid objects, nested pids have increased size because contain id both for all parent and for own pid namespaces. The problem is that these slab caches are _NOT_ marked by SLAB_ACCOUNT, as a result any pids allocated in nested pid namespaces are not memcg-accounted. Pid struct in nested pid namespace consumes up to 500 bytes memory, 100000 such objects gives us up to ~50Mb unaccounted memory, this allow container to exceed assigned memcg limits. Link: https://lkml.kernel.org/r/8b6de616-fd1a-02c6-cbdb-976ecdcfa604@virtuozzo.com Fixes: 5d097056c9a0 ("kmemcg: account certain kmem allocations to memcg") Cc: stable(a)vger.kernel.org Signed-off-by: Vasily Averin <vvs(a)virtuozzo.com> Reviewed-by: Michal Koutný <mkoutny(a)suse.com> Reviewed-by: Shakeel Butt <shakeelb(a)google.com> Acked-by: Christian Brauner <christian.brauner(a)ubuntu.com> Acked-by: Roman Gushchin <guro(a)fb.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Johannes Weiner <hannes(a)cmpxchg.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> Signed-off-by: Li Ming <limingming.li(a)huawei.com> Signed-off-by: Lu Jialin <lujialin4(a)huawei.com> Reviewed-by: Xiu Jianfeng <xiujianfeng(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- kernel/pid_namespace.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index dd7a0e41d4016..ad95ca43b51ee 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -52,7 +52,8 @@ static struct kmem_cache *create_pid_cachep(unsigned int level) mutex_lock(&pid_caches_mutex); /* Name collision forces to do allocation under mutex. */ if (!*pkc) - *pkc = kmem_cache_create(name, len, 0, SLAB_HWCACHE_ALIGN, 0); + *pkc = kmem_cache_create(name, len, 0, + SLAB_HWCACHE_ALIGN | SLAB_ACCOUNT, 0); mutex_unlock(&pid_caches_mutex); /* current can fail, but someone else can succeed. */ return READ_ONCE(*pkc); -- 2.25.1

1 6

[PATCH] arm64 support kexec -l -s
by xuhuijie 22 Sep '21

22 Sep '21

support arm64 kexec_file(23): kexec_file: add kexec_file_load system call to unistd.h kexec_file: make kexec_image_post_load_cleanup_default() global kexec_file: drop arch_kexec_mem_walk() kexec_file: factor out memblock-based arch_kexec_walk_mem() kexec_file: kexec_walk_memblock() only walks a dedicated region at kdump kexec_file: add image head flag definitions kexec_file: cpufeature: add MMFR0 helper functions kexec_file: enable KEXEC_FILE config kexec_file: load initrd and device-tree kexec_file: allow for loading Image-format kernel kexec_file: invoke the kernel without purgatory kexec_file: pe.h: remove message[] from mz header definition kexec_file: add kernel signature verification support kexec_file: add kaslr support kexec_file: forbid kdump via kexec_file_load() kexec_file: include fdt_addresses.c kexec_file: include linux/vmalloc.h kexec_file: Refactor setup_dtb() to consolidate error checking kexec_file: add rng-seed support kexec_file: add crash dump support kexec_file: Update to upstream version v1.5.0-23-g87963ee20693 kexec_file: handle empty command-line kexec_file: fix memory leakage in create_dtb() when fdt_open_into() fails support arm64 platform keyring(10): integrity: Define a trusted platform keyring integrity: Load certs to the platform keyring integrity: Add EFI signature data types integrity: Add an EFI signature blob parser integrity: Import certificates from UEFI Secure Boot integrity: Allow the "db" UEFI variable to be suppressed integrity: Support platform keyring for kernel appraisal integrity, KEYS: add a reference to platform keyring integrity: Make use of platform keyring for signature verify integrity: Fix __integrity_init_keyring() section mismatch fix kabi(1): kexec_file: fix kabi because of the new system call sys_kexec_file_load --- arch/arm64/Kconfig | 33 ++ arch/arm64/include/asm/cpufeature.h | 48 +++ arch/arm64/include/asm/image.h | 59 +++ arch/arm64/include/asm/kexec.h | 23 ++ arch/arm64/kernel/Makefile | 3 +- arch/arm64/kernel/cpu-reset.S | 8 +- arch/arm64/kernel/head.S | 3 +- arch/arm64/kernel/image.h | 21 +- arch/arm64/kernel/kexec_image.c | 126 +++++++ arch/arm64/kernel/machine_kexec.c | 12 +- arch/arm64/kernel/machine_kexec_file.c | 342 ++++++++++++++++++ arch/arm64/kernel/relocate_kernel.S | 3 +- arch/powerpc/kernel/machine_kexec_file_64.c | 54 --- arch/s390/kernel/machine_kexec_file.c | 10 - arch/x86/kernel/kexec-bzimage64.c | 14 +- certs/system_keyring.c | 23 +- include/keys/system_keyring.h | 8 + include/linux/efi.h | 34 ++ include/linux/kexec.h | 15 +- include/linux/pe.h | 2 +- include/linux/verification.h | 1 + include/uapi/linux/kexec.h | 1 + kernel/kexec.c | 10 + kernel/kexec_file.c | 160 +++++++- lib/Makefile | 2 +- lib/fdt_addresses.c | 2 + scripts/dtc/libfdt/fdt_addresses.c | 47 +++ scripts/dtc/libfdt/libfdt.h | 61 ++++ security/integrity/Kconfig | 11 + security/integrity/Makefile | 5 + security/integrity/digsig.c | 114 ++++-- security/integrity/ima/ima_appraise.c | 14 +- security/integrity/integrity.h | 23 +- .../integrity/platform_certs/efi_parser.c | 108 ++++++ security/integrity/platform_certs/load_uefi.c | 194 ++++++++++ .../platform_certs/platform_keyring.c | 58 +++ 36 files changed, 1518 insertions(+), 134 deletions(-) create mode 100644 arch/arm64/include/asm/image.h create mode 100644 arch/arm64/kernel/kexec_image.c create mode 100644 arch/arm64/kernel/machine_kexec_file.c create mode 100644 lib/fdt_addresses.c create mode 100644 security/integrity/platform_certs/efi_parser.c create mode 100644 security/integrity/platform_certs/load_uefi.c create mode 100644 security/integrity/platform_certs/platform_keyring.c diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 9dfbd052b..5381d21bb 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -957,6 +957,39 @@ config KEXEC but it is independent of the system firmware. And like a reboot you can start any kernel with it, not just Linux. +config KEXEC_FILE + bool "kexec file based system call" + select KEXEC_CORE + help + This is new version of kexec system call. This system call is + file based and takes file descriptors as system call argument + for kernel and initramfs as opposed to list of segments as + accepted by previous system call. + +config KEXEC_VERIFY_SIG + bool "Verify kernel signature during kexec_file_load() syscall" + depends on KEXEC_FILE + help + Select this option to verify a signature with loaded kernel + image. If configured, any attempt of loading a image without + valid signature will fail. + + In addition to that option, you need to enable signature + verification for the corresponding kernel image type being + loaded in order for this to work. + +config KEXEC_IMAGE_VERIFY_SIG + bool "Enable Image signature verification support" + default y + depends on KEXEC_VERIFY_SIG + depends on EFI && SIGNED_PE_FILE_VERIFICATION + help + Enable Image signature verification support. + +comment "Support for PE file signature verification disabled" + depends on KEXEC_VERIFY_SIG + depends on !EFI || !SIGNED_PE_FILE_VERIFICATION + config CRASH_DUMP bool "Build kdump crash kernel" help diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index c43d02365..211aa994b 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -497,11 +497,59 @@ static inline bool system_supports_32bit_el0(void) return cpus_have_const_cap(ARM64_HAS_32BIT_EL0); } +static inline bool system_supports_4kb_granule(void) +{ + u64 mmfr0; + u32 val; + + mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1); + val = cpuid_feature_extract_unsigned_field(mmfr0, + ID_AA64MMFR0_TGRAN4_SHIFT); + + return val == ID_AA64MMFR0_TGRAN4_SUPPORTED; +} + +static inline bool system_supports_64kb_granule(void) +{ + u64 mmfr0; + u32 val; + + mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1); + val = cpuid_feature_extract_unsigned_field(mmfr0, + ID_AA64MMFR0_TGRAN64_SHIFT); + + return val == ID_AA64MMFR0_TGRAN64_SUPPORTED; +} + +static inline bool system_supports_16kb_granule(void) +{ + u64 mmfr0; + u32 val; + + mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1); + val = cpuid_feature_extract_unsigned_field(mmfr0, + ID_AA64MMFR0_TGRAN16_SHIFT); + + return val == ID_AA64MMFR0_TGRAN16_SUPPORTED; +} + static inline bool system_supports_mixed_endian_el0(void) { return id_aa64mmfr0_mixed_endian_el0(read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1)); } +static inline bool system_supports_mixed_endian(void) +{ + u64 mmfr0; + u32 val; + + mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1); + val = cpuid_feature_extract_unsigned_field(mmfr0, + ID_AA64MMFR0_BIGENDEL_SHIFT); + + return val == 0x1; +} + static inline bool system_supports_fpsimd(void) { return !cpus_have_const_cap(ARM64_HAS_NO_FPSIMD); diff --git a/arch/arm64/include/asm/image.h b/arch/arm64/include/asm/image.h new file mode 100644 index 000000000..e2c27a227 --- /dev/null +++ b/arch/arm64/include/asm/image.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ASM_IMAGE_H +#define __ASM_IMAGE_H + +#define ARM64_IMAGE_MAGIC "ARM\x64" + +#define ARM64_IMAGE_FLAG_BE_SHIFT 0 +#define ARM64_IMAGE_FLAG_PAGE_SIZE_SHIFT (ARM64_IMAGE_FLAG_BE_SHIFT + 1) +#define ARM64_IMAGE_FLAG_PHYS_BASE_SHIFT \ + (ARM64_IMAGE_FLAG_PAGE_SIZE_SHIFT + 2) +#define ARM64_IMAGE_FLAG_BE_MASK 0x1 +#define ARM64_IMAGE_FLAG_PAGE_SIZE_MASK 0x3 +#define ARM64_IMAGE_FLAG_PHYS_BASE_MASK 0x1 + +#define ARM64_IMAGE_FLAG_LE 0 +#define ARM64_IMAGE_FLAG_BE 1 +#define ARM64_IMAGE_FLAG_PAGE_SIZE_4K 1 +#define ARM64_IMAGE_FLAG_PAGE_SIZE_16K 2 +#define ARM64_IMAGE_FLAG_PAGE_SIZE_64K 3 +#define ARM64_IMAGE_FLAG_PHYS_BASE 1 + +#ifndef __ASSEMBLY__ + +#define arm64_image_flag_field(flags, field) \ + (((flags) >> field##_SHIFT) & field##_MASK) + +/* + * struct arm64_image_header - arm64 kernel image header + * See Documentation/arm64/booting.txt for details + * + * @code0: Executable code, or + * @mz_header alternatively used for part of MZ header + * @code1: Executable code + * @text_offset: Image load offset + * @image_size: Effective Image size + * @flags: kernel flags + * @reserved: reserved + * @magic: Magic number + * @reserved5: reserved, or + * @pe_header: alternatively used for PE COFF offset + */ + +struct arm64_image_header { + __le32 code0; + __le32 code1; + __le64 text_offset; + __le64 image_size; + __le64 flags; + __le64 res2; + __le64 res3; + __le64 res4; + __le32 magic; + __le32 res5; +}; + +#endif /* __ASSEMBLY__ */ + +#endif /* __ASM_IMAGE_H */ diff --git a/arch/arm64/include/asm/kexec.h b/arch/arm64/include/asm/kexec.h index 30ab1fa34..286950227 100644 --- a/arch/arm64/include/asm/kexec.h +++ b/arch/arm64/include/asm/kexec.h @@ -101,6 +101,29 @@ static inline void crash_prepare_suspend(void) {} static inline void crash_post_resume(void) {} #endif +#ifdef CONFIG_KEXEC_FILE +#define ARCH_HAS_KIMAGE_ARCH + +struct kimage_arch { + void *dtb; + unsigned long dtb_mem; + /* Core ELF header buffer */ + void *elf_headers; + unsigned long elf_headers_mem; + unsigned long elf_headers_sz; +}; + +extern const struct kexec_file_ops kexec_image_ops; + +struct kimage; + +extern int arch_kimage_file_post_load_cleanup(struct kimage *image); +extern int load_other_segments(struct kimage *image, + unsigned long kernel_load_addr, unsigned long kernel_size, + char *initrd, unsigned long initrd_len, + char *cmdline); +#endif + void machine_kexec_mask_interrupts(void); #endif /* __ASSEMBLY__ */ diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index fe759f364..2e21303b6 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -54,8 +54,9 @@ arm64-obj-$(CONFIG_ARM64_ACPI_PARKING_PROTOCOL) += acpi_parking_protocol.o arm64-obj-$(CONFIG_PARAVIRT) += paravirt.o paravirt-spinlocks.o arm64-obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o arm64-obj-$(CONFIG_HIBERNATION) += hibernate.o hibernate-asm.o -arm64-obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o \ +arm64-obj-$(CONFIG_KEXEC_CORE) += machine_kexec.o relocate_kernel.o \ cpu-reset.o +arm64-obj-$(CONFIG_KEXEC_FILE) += machine_kexec_file.o kexec_image.o arm64-obj-$(CONFIG_ARM64_CPU_PARK) += cpu-park.o arm64-obj-$(CONFIG_ARM64_RELOC_TEST) += arm64-reloc-test.o arm64-reloc-test-y := reloc_test_core.o reloc_test_syms.o diff --git a/arch/arm64/kernel/cpu-reset.S b/arch/arm64/kernel/cpu-reset.S index 8021b46c9..a2be30275 100644 --- a/arch/arm64/kernel/cpu-reset.S +++ b/arch/arm64/kernel/cpu-reset.S @@ -22,11 +22,11 @@ * __cpu_soft_restart(el2_switch, entry, arg0, arg1, arg2) - Helper for * cpu_soft_restart. * - * @el2_switch: Flag to indicate a swich to EL2 is needed. + * @el2_switch: Flag to indicate a switch to EL2 is needed. * @entry: Location to jump to for soft reset. - * arg0: First argument passed to @entry. - * arg1: Second argument passed to @entry. - * arg2: Third argument passed to @entry. + * arg0: First argument passed to @entry. (relocation list) + * arg1: Second argument passed to @entry.(physical kernel entry) + * arg2: Third argument passed to @entry. (physical dtb address) * * Put the CPU into the same state as it would be if it had been reset, and * branch to what would be the reset vector. It must be executed with the diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index 34bd0790d..5edfb9cfd 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -31,6 +31,7 @@ #include <asm/cache.h> #include <asm/cputype.h> #include <asm/elf.h> +#include <asm/image.h> #include <asm/kernel-pgtable.h> #include <asm/kvm_arm.h> #include <asm/memory.h> @@ -91,7 +92,7 @@ _head: .quad 0 // reserved .quad 0 // reserved .quad 0 // reserved - .ascii "ARM\x64" // Magic number + .ascii ARM64_IMAGE_MAGIC // Magic number #ifdef CONFIG_EFI .long pe_header - _head // Offset to the PE header. diff --git a/arch/arm64/kernel/image.h b/arch/arm64/kernel/image.h index eff6a564a..b22e8ad07 100644 --- a/arch/arm64/kernel/image.h +++ b/arch/arm64/kernel/image.h @@ -15,13 +15,15 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ -#ifndef __ASM_IMAGE_H -#define __ASM_IMAGE_H +#ifndef __ARM64_KERNEL_IMAGE_H +#define __ARM64_KERNEL_IMAGE_H #ifndef LINKER_SCRIPT #error This file should only be included in vmlinux.lds.S #endif +#include <asm/image.h> + /* * There aren't any ELF relocations we can use to endian-swap values known only * at link time (e.g. the subtraction of two symbol addresses), so we must get @@ -47,19 +49,22 @@ sym##_lo32 = DATA_LE32((data) & 0xffffffff); \ sym##_hi32 = DATA_LE32((data) >> 32) +#define __HEAD_FLAG(field) (__HEAD_FLAG_##field << \ + ARM64_IMAGE_FLAG_##field##_SHIFT) + #ifdef CONFIG_CPU_BIG_ENDIAN -#define __HEAD_FLAG_BE 1 +#define __HEAD_FLAG_BE ARM64_IMAGE_FLAG_BE #else -#define __HEAD_FLAG_BE 0 +#define __HEAD_FLAG_BE ARM64_IMAGE_FLAG_LE #endif #define __HEAD_FLAG_PAGE_SIZE ((PAGE_SHIFT - 10) / 2) #define __HEAD_FLAG_PHYS_BASE 1 -#define __HEAD_FLAGS ((__HEAD_FLAG_BE << 0) | \ - (__HEAD_FLAG_PAGE_SIZE << 1) | \ - (__HEAD_FLAG_PHYS_BASE << 3)) +#define __HEAD_FLAGS (__HEAD_FLAG(BE) | \ + __HEAD_FLAG(PAGE_SIZE) | \ + __HEAD_FLAG(PHYS_BASE)) /* * These will output as part of the Image header, which should be little-endian @@ -113,4 +118,4 @@ __efistub_screen_info = screen_info; #endif -#endif /* __ASM_IMAGE_H */ +#endif /* __ARM64_KERNEL_IMAGE_H */ diff --git a/arch/arm64/kernel/kexec_image.c b/arch/arm64/kernel/kexec_image.c new file mode 100644 index 000000000..1ad1d5f8f --- /dev/null +++ b/arch/arm64/kernel/kexec_image.c @@ -0,0 +1,126 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Kexec image loader + + * Copyright (C) 2018 Linaro Limited + * Author: AKASHI Takahiro <takahiro.akashi(a)linaro.org> + */ + +#define pr_fmt(fmt) "kexec_file(Image): " fmt + +#include <linux/err.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/kexec.h> +#include <linux/pe.h> +#include <linux/string.h> +#include <linux/verification.h> +#include <asm/byteorder.h> +#include <asm/cpufeature.h> +#include <asm/image.h> +#include <asm/memory.h> + +static int image_probe(const char *kernel_buf, unsigned long kernel_len) +{ + const struct arm64_image_header *h = + (const struct arm64_image_header *)(kernel_buf); + + if (!h || (kernel_len < sizeof(*h))) + return -EINVAL; + + if (memcmp(&h->magic, ARM64_IMAGE_MAGIC, sizeof(h->magic))) + return -EINVAL; + + return 0; +} + +static void *image_load(struct kimage *image, + char *kernel, unsigned long kernel_len, + char *initrd, unsigned long initrd_len, + char *cmdline, unsigned long cmdline_len) +{ + struct arm64_image_header *h; + u64 flags, value; + bool be_image, be_kernel; + struct kexec_buf kbuf; + unsigned long text_offset; + struct kexec_segment *kernel_segment; + int ret; + + /* + * We require a kernel with an unambiguous Image header. Per + * Documentation/booting.txt, this is the case when image_size + * is non-zero (practically speaking, since v3.17). + */ + h = (struct arm64_image_header *)kernel; + if (!h->image_size) + return ERR_PTR(-EINVAL); + + /* Check cpu features */ + flags = le64_to_cpu(h->flags); + be_image = arm64_image_flag_field(flags, ARM64_IMAGE_FLAG_BE); + be_kernel = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN); + if ((be_image != be_kernel) && !system_supports_mixed_endian()) + return ERR_PTR(-EINVAL); + + value = arm64_image_flag_field(flags, ARM64_IMAGE_FLAG_PAGE_SIZE); + if (((value == ARM64_IMAGE_FLAG_PAGE_SIZE_4K) && + !system_supports_4kb_granule()) || + ((value == ARM64_IMAGE_FLAG_PAGE_SIZE_64K) && + !system_supports_64kb_granule()) || + ((value == ARM64_IMAGE_FLAG_PAGE_SIZE_16K) && + !system_supports_16kb_granule())) + return ERR_PTR(-EINVAL); + + /* Load the kernel */ + kbuf.image = image; + kbuf.buf_min = 0; + kbuf.buf_max = ULONG_MAX; + kbuf.top_down = false; + + kbuf.buffer = kernel; + kbuf.bufsz = kernel_len; + kbuf.mem = 0; + kbuf.memsz = le64_to_cpu(h->image_size); + text_offset = le64_to_cpu(h->text_offset); + kbuf.buf_align = MIN_KIMG_ALIGN; + + /* Adjust kernel segment with TEXT_OFFSET */ + kbuf.memsz += text_offset; + + ret = kexec_add_buffer(&kbuf); + if (ret) + return ERR_PTR(ret); + + kernel_segment = &image->segment[image->nr_segments - 1]; + kernel_segment->mem += text_offset; + kernel_segment->memsz -= text_offset; + image->start = kernel_segment->mem; + + pr_debug("Loaded kernel at 0x%lx bufsz=0x%lx memsz=0x%lx\n", + kernel_segment->mem, kbuf.bufsz, + kernel_segment->memsz); + + /* Load additional data */ + ret = load_other_segments(image, + kernel_segment->mem, kernel_segment->memsz, + initrd, initrd_len, cmdline); + + return ERR_PTR(ret); +} + +#ifdef CONFIG_KEXEC_IMAGE_VERIFY_SIG +static int image_verify_sig(const char *kernel, unsigned long kernel_len) +{ + return verify_pefile_signature(kernel, kernel_len, NULL, + VERIFYING_KEXEC_PE_SIGNATURE); +} +#endif + +const struct kexec_file_ops kexec_image_ops = { + .probe = image_probe, + .load = image_load, +#ifdef CONFIG_KEXEC_IMAGE_VERIFY_SIG + .verify_sig = image_verify_sig, +#endif +}; diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index b41d6d482..213d0053e 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -214,9 +214,17 @@ void machine_kexec(struct kimage *kimage) * uses physical addressing to relocate the new image to its final * position and transfers control to the image entry point when the * relocation is complete. + * In kexec case, kimage->start points to purgatory assuming that + * kernel entry and dtb address are embedded in purgatory by + * userspace (kexec-tools). + * In kexec_file case, the kernel starts directly without purgatory. */ - - cpu_soft_restart(reboot_code_buffer_phys, kimage->head, kimage->start, 0); + cpu_soft_restart(reboot_code_buffer_phys, kimage->head, kimage->start, +#ifdef CONFIG_KEXEC_FILE + kimage->arch.dtb_mem); +#else + 0); +#endif BUG(); /* Should never get here. */ } diff --git a/arch/arm64/kernel/machine_kexec_file.c b/arch/arm64/kernel/machine_kexec_file.c new file mode 100644 index 000000000..ec3b72dc0 --- /dev/null +++ b/arch/arm64/kernel/machine_kexec_file.c @@ -0,0 +1,342 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * kexec_file for arm64 + * + * Copyright (C) 2018 Linaro Limited + * Author: AKASHI Takahiro <takahiro.akashi(a)linaro.org> + * + * Most code is derived from arm64 port of kexec-tools + */ + +#define pr_fmt(fmt) "kexec_file: " fmt + +#include <linux/ioport.h> +#include <linux/kernel.h> +#include <linux/kexec.h> +#include <linux/libfdt.h> +#include <linux/memblock.h> +#include <linux/of_fdt.h> +#include <linux/random.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/types.h> +#include <linux/vmalloc.h> +#include <asm/byteorder.h> + +/* relevant device tree properties */ +#define FDT_PROP_KEXEC_ELFHDR "linux,elfcorehdr" +#define FDT_PROP_MEM_RANGE "linux,usable-memory-range" +#define FDT_PROP_INITRD_START "linux,initrd-start" +#define FDT_PROP_INITRD_END "linux,initrd-end" +#define FDT_PROP_BOOTARGS "bootargs" +#define FDT_PROP_KASLR_SEED "kaslr-seed" +#define FDT_PROP_RNG_SEED "rng-seed" +#define RNG_SEED_SIZE 128 + +const struct kexec_file_ops * const kexec_file_loaders[] = { + &kexec_image_ops, + NULL +}; + +int arch_kimage_file_post_load_cleanup(struct kimage *image) +{ + vfree(image->arch.dtb); + image->arch.dtb = NULL; + + vfree(image->arch.elf_headers); + image->arch.elf_headers = NULL; + image->arch.elf_headers_sz = 0; + + return kexec_image_post_load_cleanup_default(image); +} + +static int setup_dtb(struct kimage *image, + unsigned long initrd_load_addr, unsigned long initrd_len, + char *cmdline, void *dtb) +{ + int off, ret; + + ret = fdt_path_offset(dtb, "/chosen"); + if (ret < 0) + goto out; + + off = ret; + + ret = fdt_delprop(dtb, off, FDT_PROP_KEXEC_ELFHDR); + if (ret && ret != -FDT_ERR_NOTFOUND) + goto out; + ret = fdt_delprop(dtb, off, FDT_PROP_MEM_RANGE); + if (ret && ret != -FDT_ERR_NOTFOUND) + goto out; + + if (image->type == KEXEC_TYPE_CRASH) { + /* add linux,elfcorehdr */ + ret = fdt_appendprop_addrrange(dtb, 0, off, + FDT_PROP_KEXEC_ELFHDR, + image->arch.elf_headers_mem, + image->arch.elf_headers_sz); + if (ret) + return (ret == -FDT_ERR_NOSPACE ? -ENOMEM : -EINVAL); + + /* add linux,usable-memory-range */ + ret = fdt_appendprop_addrrange(dtb, 0, off, + FDT_PROP_MEM_RANGE, + crashk_res.start, + crashk_res.end - crashk_res.start + 1); + if (ret) + return (ret == -FDT_ERR_NOSPACE ? -ENOMEM : -EINVAL); + } + + /* add bootargs */ + if (cmdline) { + ret = fdt_setprop_string(dtb, off, FDT_PROP_BOOTARGS, cmdline); + if (ret) + goto out; + } else { + ret = fdt_delprop(dtb, off, FDT_PROP_BOOTARGS); + if (ret && (ret != -FDT_ERR_NOTFOUND)) + goto out; + } + + /* add initrd-* */ + if (initrd_load_addr) { + ret = fdt_setprop_u64(dtb, off, FDT_PROP_INITRD_START, + initrd_load_addr); + if (ret) + goto out; + + ret = fdt_setprop_u64(dtb, off, FDT_PROP_INITRD_END, + initrd_load_addr + initrd_len); + if (ret) + goto out; + } else { + ret = fdt_delprop(dtb, off, FDT_PROP_INITRD_START); + if (ret && (ret != -FDT_ERR_NOTFOUND)) + goto out; + + ret = fdt_delprop(dtb, off, FDT_PROP_INITRD_END); + if (ret && (ret != -FDT_ERR_NOTFOUND)) + goto out; + } + + /* add kaslr-seed */ + ret = fdt_delprop(dtb, off, FDT_PROP_KASLR_SEED); + if (ret && (ret != -FDT_ERR_NOTFOUND)) + goto out; + + if (rng_is_initialized()) { + u64 seed = get_random_u64(); + ret = fdt_setprop_u64(dtb, off, FDT_PROP_KASLR_SEED, seed); + if (ret) + goto out; + } else { + pr_notice("RNG is not initialised: omitting \"%s\" property\n", + FDT_PROP_KASLR_SEED); + } + + /* add rng-seed */ + if (rng_is_initialized()) { + u8 rng_seed[RNG_SEED_SIZE]; + get_random_bytes(rng_seed, RNG_SEED_SIZE); + ret = fdt_setprop(dtb, off, FDT_PROP_RNG_SEED, rng_seed, + RNG_SEED_SIZE); + if (ret) + goto out; + } else { + pr_notice("RNG is not initialised: omitting \"%s\" property\n", + FDT_PROP_RNG_SEED); + } + +out: + if (ret) + return (ret == -FDT_ERR_NOSPACE) ? -ENOMEM : -EINVAL; + + return 0; +} + +/* + * More space needed so that we can add initrd, bootargs, kaslr-seed, + * rng-seed, userable-memory-range and elfcorehdr. + */ +#define DTB_EXTRA_SPACE 0x1000 + +static int create_dtb(struct kimage *image, + unsigned long initrd_load_addr, unsigned long initrd_len, + char *cmdline, void **dtb) +{ + void *buf; + size_t buf_size; + size_t cmdline_len; + int ret; + + cmdline_len = cmdline ? strlen(cmdline) : 0; + buf_size = fdt_totalsize(initial_boot_params) + + cmdline_len + DTB_EXTRA_SPACE; + + for (;;) { + buf = vmalloc(buf_size); + if (!buf) + return -ENOMEM; + + /* duplicate a device tree blob */ + ret = fdt_open_into(initial_boot_params, buf, buf_size); + if (ret) { + vfree(buf); + return -EINVAL; + } + + ret = setup_dtb(image, initrd_load_addr, initrd_len, + cmdline, buf); + if (ret) { + vfree(buf); + if (ret == -ENOMEM) { + /* unlikely, but just in case */ + buf_size += DTB_EXTRA_SPACE; + continue; + } else { + return ret; + } + } + + /* trim it */ + fdt_pack(buf); + *dtb = buf; + + return 0; + } +} + +static int prepare_elf_headers(void **addr, unsigned long *sz) +{ + struct crash_mem *cmem; + unsigned int nr_ranges; + int ret; + u64 i; + phys_addr_t start, end; + + nr_ranges = 1; /* for exclusion of crashkernel region */ + for_each_mem_range(i, &memblock.memory, NULL, NUMA_NO_NODE, + MEMBLOCK_NONE, &start, &end, NULL) + nr_ranges++; + + cmem = kmalloc(sizeof(struct crash_mem) + + sizeof(struct crash_mem_range) * nr_ranges, GFP_KERNEL); + if (!cmem) + return -ENOMEM; + + cmem->max_nr_ranges = nr_ranges; + cmem->nr_ranges = 0; + for_each_mem_range(i, &memblock.memory, NULL, NUMA_NO_NODE, + MEMBLOCK_NONE, &start, &end, NULL) { + cmem->ranges[cmem->nr_ranges].start = start; + cmem->ranges[cmem->nr_ranges].end = end - 1; + cmem->nr_ranges++; + } + + /* Exclude crashkernel region */ + ret = crash_exclude_mem_range(cmem, crashk_res.start, crashk_res.end); + + if (!ret) + ret = crash_prepare_elf64_headers(cmem, true, addr, sz); + + kfree(cmem); + return ret; +} + +int load_other_segments(struct kimage *image, + unsigned long kernel_load_addr, + unsigned long kernel_size, + char *initrd, unsigned long initrd_len, + char *cmdline) +{ + struct kexec_buf kbuf; + void *headers, *dtb = NULL; + unsigned long headers_sz, initrd_load_addr = 0, dtb_len; + int ret = 0; + + kbuf.image = image; + /* not allocate anything below the kernel */ + kbuf.buf_min = kernel_load_addr + kernel_size; + + /* load elf core header */ + if (image->type == KEXEC_TYPE_CRASH) { + ret = prepare_elf_headers(&headers, &headers_sz); + if (ret) { + pr_err("Preparing elf core header failed\n"); + goto out_err; + } + + kbuf.buffer = headers; + kbuf.bufsz = headers_sz; + kbuf.mem = KEXEC_BUF_MEM_UNKNOWN; + kbuf.memsz = headers_sz; + kbuf.buf_align = SZ_64K; /* largest supported page size */ + kbuf.buf_max = ULONG_MAX; + kbuf.top_down = true; + + ret = kexec_add_buffer(&kbuf); + if (ret) { + vfree(headers); + goto out_err; + } + image->arch.elf_headers = headers; + image->arch.elf_headers_mem = kbuf.mem; + image->arch.elf_headers_sz = headers_sz; + + pr_debug("Loaded elf core header at 0x%lx bufsz=0x%lx memsz=0x%lx\n", + image->arch.elf_headers_mem, headers_sz, headers_sz); + } + + /* load initrd */ + if (initrd) { + kbuf.buffer = initrd; + kbuf.bufsz = initrd_len; + kbuf.mem = 0; + kbuf.memsz = initrd_len; + kbuf.buf_align = 0; + /* within 1GB-aligned window of up to 32GB in size */ + kbuf.buf_max = round_down(kernel_load_addr, SZ_1G) + + (unsigned long)SZ_1G * 32; + kbuf.top_down = false; + + ret = kexec_add_buffer(&kbuf); + if (ret) + goto out_err; + initrd_load_addr = kbuf.mem; + + pr_debug("Loaded initrd at 0x%lx bufsz=0x%lx memsz=0x%lx\n", + initrd_load_addr, initrd_len, initrd_len); + } + + /* load dtb */ + ret = create_dtb(image, initrd_load_addr, initrd_len, cmdline, &dtb); + if (ret) { + pr_err("Preparing for new dtb failed\n"); + goto out_err; + } + + dtb_len = fdt_totalsize(dtb); + kbuf.buffer = dtb; + kbuf.bufsz = dtb_len; + kbuf.mem = 0; + kbuf.memsz = dtb_len; + /* not across 2MB boundary */ + kbuf.buf_align = SZ_2M; + kbuf.buf_max = ULONG_MAX; + kbuf.top_down = true; + + ret = kexec_add_buffer(&kbuf); + if (ret) + goto out_err; + image->arch.dtb = dtb; + image->arch.dtb_mem = kbuf.mem; + + pr_debug("Loaded dtb at 0x%lx bufsz=0x%lx memsz=0x%lx\n", + kbuf.mem, dtb_len, dtb_len); + + return 0; + +out_err: + vfree(dtb); + return ret; +} diff --git a/arch/arm64/kernel/relocate_kernel.S b/arch/arm64/kernel/relocate_kernel.S index f407e422a..95fd94209 100644 --- a/arch/arm64/kernel/relocate_kernel.S +++ b/arch/arm64/kernel/relocate_kernel.S @@ -32,6 +32,7 @@ ENTRY(arm64_relocate_new_kernel) /* Setup the list loop variables. */ + mov x18, x2 /* x18 = dtb address */ mov x17, x1 /* x17 = kimage_start */ mov x16, x0 /* x16 = kimage_head */ raw_dcache_line_size x15, x0 /* x15 = dcache line size */ @@ -107,7 +108,7 @@ ENTRY(arm64_relocate_new_kernel) isb /* Start new image. */ - mov x0, xzr + mov x0, x18 mov x1, xzr mov x2, xzr mov x3, xzr diff --git a/arch/powerpc/kernel/machine_kexec_file_64.c b/arch/powerpc/kernel/machine_kexec_file_64.c index c77e95e9b..0d20c7ad4 100644 --- a/arch/powerpc/kernel/machine_kexec_file_64.c +++ b/arch/powerpc/kernel/machine_kexec_file_64.c @@ -24,7 +24,6 @@ #include <linux/slab.h> #include <linux/kexec.h> -#include <linux/memblock.h> #include <linux/of_fdt.h> #include <linux/libfdt.h> #include <asm/ima.h> @@ -46,59 +45,6 @@ int arch_kexec_kernel_image_probe(struct kimage *image, void *buf, return kexec_image_probe_default(image, buf, buf_len); } -/** - * arch_kexec_walk_mem - call func(data) for each unreserved memory block - * @kbuf: Context info for the search. Also passed to @func. - * @func: Function to call for each memory block. - * - * This function is used by kexec_add_buffer and kexec_locate_mem_hole - * to find unreserved memory to load kexec segments into. - * - * Return: The memory walk will stop when func returns a non-zero value - * and that value will be returned. If all free regions are visited without - * func returning non-zero, then zero will be returned. - */ -int arch_kexec_walk_mem(struct kexec_buf *kbuf, - int (*func)(struct resource *, void *)) -{ - int ret = 0; - u64 i; - phys_addr_t mstart, mend; - struct resource res = { }; - - if (kbuf->top_down) { - for_each_free_mem_range_reverse(i, NUMA_NO_NODE, 0, - &mstart, &mend, NULL) { - /* - * In memblock, end points to the first byte after the - * range while in kexec, end points to the last byte - * in the range. - */ - res.start = mstart; - res.end = mend - 1; - ret = func(&res, kbuf); - if (ret) - break; - } - } else { - for_each_free_mem_range(i, NUMA_NO_NODE, 0, &mstart, &mend, - NULL) { - /* - * In memblock, end points to the first byte after the - * range while in kexec, end points to the last byte - * in the range. - */ - res.start = mstart; - res.end = mend - 1; - ret = func(&res, kbuf); - if (ret) - break; - } - } - - return ret; -} - /** * setup_purgatory - initialize the purgatory's global variables * @image: kexec image. diff --git a/arch/s390/kernel/machine_kexec_file.c b/arch/s390/kernel/machine_kexec_file.c index f413f57f8..32023b4f9 100644 --- a/arch/s390/kernel/machine_kexec_file.c +++ b/arch/s390/kernel/machine_kexec_file.c @@ -134,16 +134,6 @@ int kexec_file_add_initrd(struct kimage *image, struct s390_load_data *data, return ret; } -/* - * The kernel is loaded to a fixed location. Turn off kexec_locate_mem_hole - * and provide kbuf->mem by hand. - */ -int arch_kexec_walk_mem(struct kexec_buf *kbuf, - int (*func)(struct resource *, void *)) -{ - return 1; -} - int arch_kexec_apply_relocations_add(struct purgatory_info *pi, Elf_Shdr *section, const Elf_Shdr *relsec, diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c index 70caa60b4..8977de5ad 100644 --- a/arch/x86/kernel/kexec-bzimage64.c +++ b/arch/x86/kernel/kexec-bzimage64.c @@ -535,9 +535,17 @@ static int bzImage64_cleanup(void *loader_data) #ifdef CONFIG_KEXEC_BZIMAGE_VERIFY_SIG static int bzImage64_verify_sig(const char *kernel, unsigned long kernel_len) { - return verify_pefile_signature(kernel, kernel_len, - VERIFY_USE_SECONDARY_KEYRING, - VERIFYING_KEXEC_PE_SIGNATURE); + int ret; + + ret = verify_pefile_signature(kernel, kernel_len, + VERIFY_USE_SECONDARY_KEYRING, + VERIFYING_KEXEC_PE_SIGNATURE); + if (ret == -ENOKEY && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING)) { + ret = verify_pefile_signature(kernel, kernel_len, + VERIFY_USE_PLATFORM_KEYRING, + VERIFYING_KEXEC_PE_SIGNATURE); + } + return ret; } #endif diff --git a/certs/system_keyring.c b/certs/system_keyring.c index 817287175..c05c29ae4 100644 --- a/certs/system_keyring.c +++ b/certs/system_keyring.c @@ -24,6 +24,9 @@ static struct key *builtin_trusted_keys; #ifdef CONFIG_SECONDARY_TRUSTED_KEYRING static struct key *secondary_trusted_keys; #endif +#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING +static struct key *platform_trusted_keys; +#endif extern __initconst const u8 system_certificate_list[]; extern __initconst const unsigned long system_certificate_list_size; @@ -237,11 +240,22 @@ int verify_pkcs7_signature(const void *data, size_t len, #else trusted_keys = builtin_trusted_keys; #endif + } else if (trusted_keys == VERIFY_USE_PLATFORM_KEYRING) { +#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING + trusted_keys = platform_trusted_keys; +#else + trusted_keys = NULL; +#endif + if (!trusted_keys) { + ret = -ENOKEY; + pr_devel("PKCS#7 platform keyring is not available\n"); + goto error; + } } ret = pkcs7_validate_trust(pkcs7, trusted_keys); if (ret < 0) { if (ret == -ENOKEY) - pr_err("PKCS#7 signature not signed with a trusted key\n"); + pr_devel("PKCS#7 signature not signed with a trusted key\n"); goto error; } @@ -266,3 +280,10 @@ int verify_pkcs7_signature(const void *data, size_t len, EXPORT_SYMBOL_GPL(verify_pkcs7_signature); #endif /* CONFIG_SYSTEM_DATA_VERIFICATION */ + +#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING +void __init set_platform_trusted_keys(struct key *keyring) +{ + platform_trusted_keys = keyring; +} +#endif diff --git a/include/keys/system_keyring.h b/include/keys/system_keyring.h index 359c2f936..42a93eda3 100644 --- a/include/keys/system_keyring.h +++ b/include/keys/system_keyring.h @@ -61,5 +61,13 @@ static inline struct key *get_ima_blacklist_keyring(void) } #endif /* CONFIG_IMA_BLACKLIST_KEYRING */ +#if defined(CONFIG_INTEGRITY_PLATFORM_KEYRING) && \ + defined(CONFIG_SYSTEM_TRUSTED_KEYRING) +extern void __init set_platform_trusted_keys(struct key *keyring); +#else +static inline void set_platform_trusted_keys(struct key *keyring) +{ +} +#endif #endif /* _KEYS_SYSTEM_KEYRING_H */ diff --git a/include/linux/efi.h b/include/linux/efi.h index 34c255c2a..b8a6df5df 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -676,6 +676,10 @@ void efi_native_runtime_setup(void); #define EFI_IMAGE_SECURITY_DATABASE_GUID EFI_GUID(0xd719b2cb, 0x3d3a, 0x4596, 0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f) #define EFI_SHIM_LOCK_GUID EFI_GUID(0x605dab50, 0xe046, 0x4300, 0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23) +#define EFI_CERT_SHA256_GUID EFI_GUID(0xc1c41626, 0x504c, 0x4092, 0xac, 0xa9, 0x41, 0xf9, 0x36, 0x93, 0x43, 0x28) +#define EFI_CERT_X509_GUID EFI_GUID(0xa5c059a1, 0x94e4, 0x4aa7, 0x87, 0xb5, 0xab, 0x15, 0x5c, 0x2b, 0xf0, 0x72) +#define EFI_CERT_X509_SHA256_GUID EFI_GUID(0x3bd2a492, 0x96c0, 0x4079, 0xb4, 0x20, 0xfc, 0xf9, 0x8e, 0xf1, 0x03, 0xed) + /* * This GUID is used to pass to the kernel proper the struct screen_info * structure that was populated by the stub based on the GOP protocol instance @@ -947,6 +951,27 @@ typedef struct { efi_memory_desc_t entry[0]; } efi_memory_attributes_table_t; +typedef struct { + efi_guid_t signature_owner; + u8 signature_data[]; +} efi_signature_data_t; + +typedef struct { + efi_guid_t signature_type; + u32 signature_list_size; + u32 signature_header_size; + u32 signature_size; + u8 signature_header[]; + /* efi_signature_data_t signatures[][] */ +} efi_signature_list_t; + +typedef u8 efi_sha256_hash_t[32]; + +typedef struct { + efi_sha256_hash_t to_be_signed_hash; + efi_time_t time_of_revocation; +} efi_cert_x509_sha256_t; + /* * All runtime access to EFI goes through this structure: */ @@ -1129,6 +1154,15 @@ extern int efi_memattr_apply_permissions(struct mm_struct *mm, char * __init efi_md_typeattr_format(char *buf, size_t size, const efi_memory_desc_t *md); + +typedef void (*efi_element_handler_t)(const char *source, + const void *element_data, + size_t element_size); +extern int __init parse_efi_signature_list( + const char *source, + const void *data, size_t size, + efi_element_handler_t (*get_handler_for_guid)(const efi_guid_t *)); + /** * efi_range_is_wc - check the WC bit on an address range * @start: starting kvirt address diff --git a/include/linux/kexec.h b/include/linux/kexec.h index 98cf0fb09..542a15c91 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -147,6 +147,19 @@ extern const struct kexec_file_ops * const kexec_file_loaders[]; int kexec_image_probe_default(struct kimage *image, void *buf, unsigned long buf_len); +int kexec_image_post_load_cleanup_default(struct kimage *image); + +int wrap_kexec_file_load(int kernel_fd, int initrd_fd, + unsigned long cmdline_len, const char __user *cmdline_ptr, + unsigned long flags); + +/* + * If kexec_buf.mem is set to this value, kexec_locate_mem_hole() + * will try to allocate free memory. Arch may overwrite it. + */ +#ifndef KEXEC_BUF_MEM_UNKNOWN +#define KEXEC_BUF_MEM_UNKNOWN 0 +#endif /** * struct kexec_buf - parameters for finding a place for a buffer in memory @@ -187,8 +200,6 @@ int __weak arch_kexec_apply_relocations(struct purgatory_info *pi, const Elf_Shdr *relsec, const Elf_Shdr *symtab); -int __weak arch_kexec_walk_mem(struct kexec_buf *kbuf, - int (*func)(struct resource *, void *)); extern int kexec_add_buffer(struct kexec_buf *kbuf); int kexec_locate_mem_hole(struct kexec_buf *kbuf); diff --git a/include/linux/pe.h b/include/linux/pe.h index 143ce75be..3482b18a4 100644 --- a/include/linux/pe.h +++ b/include/linux/pe.h @@ -166,7 +166,7 @@ struct mz_hdr { uint16_t oem_info; /* oem specific */ uint16_t reserved1[10]; /* reserved */ uint32_t peaddr; /* address of pe header */ - char message[64]; /* message to print */ + char message[]; /* message to print */ }; struct mz_reloc { diff --git a/include/linux/verification.h b/include/linux/verification.h index cfa4730d6..018fb5f13 100644 --- a/include/linux/verification.h +++ b/include/linux/verification.h @@ -17,6 +17,7 @@ * should be used. */ #define VERIFY_USE_SECONDARY_KEYRING ((struct key *)1UL) +#define VERIFY_USE_PLATFORM_KEYRING ((struct key *)2UL) /* * The use to which an asymmetric key is being put. diff --git a/include/uapi/linux/kexec.h b/include/uapi/linux/kexec.h index ca3cebebd..9385ecba2 100644 --- a/include/uapi/linux/kexec.h +++ b/include/uapi/linux/kexec.h @@ -25,6 +25,7 @@ #define KEXEC_FILE_UNLOAD 0x00000001 #define KEXEC_FILE_ON_CRASH 0x00000002 #define KEXEC_FILE_NO_INITRAMFS 0x00000004 +#define KEXEC_FILE_LOAD_WRAP 0x100000000 /* These values match the ELF architecture values. * Unless there is a good reason that should continue to be the case. diff --git a/kernel/kexec.c b/kernel/kexec.c index 47dfad722..d44a55202 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -238,6 +238,16 @@ SYSCALL_DEFINE4(kexec_load, unsigned long, entry, unsigned long, nr_segments, { int result; + if (flags & KEXEC_FILE_LOAD_WRAP) { + int kernel_fd, initrd_fd; + + kernel_fd = entry >> 32; + initrd_fd = entry & 0x00000000ffffffff; + flags &= ~KEXEC_FILE_LOAD_WRAP; + return wrap_kexec_file_load(kernel_fd, initrd_fd, nr_segments, + (char __user *)segments, flags); + } + result = kexec_load_check(nr_segments, flags); if (result) return result; diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index 04f99368b..2a25db8dd 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -16,6 +16,7 @@ #include <linux/file.h> #include <linux/slab.h> #include <linux/kexec.h> +#include <linux/memblock.h> #include <linux/mutex.h> #include <linux/list.h> #include <linux/fs.h> @@ -78,7 +79,7 @@ void * __weak arch_kexec_kernel_image_load(struct kimage *image) return kexec_image_load_default(image); } -static int kexec_image_post_load_cleanup_default(struct kimage *image) +int kexec_image_post_load_cleanup_default(struct kimage *image) { if (!image->fops || !image->fops->cleanup) return 0; @@ -407,6 +408,96 @@ SYSCALL_DEFINE5(kexec_file_load, int, kernel_fd, int, initrd_fd, return ret; } +int wrap_kexec_file_load(int kernel_fd, int initrd_fd, + unsigned long cmdline_len, const char __user *cmdline_ptr, + unsigned long flags) +{ + int ret = 0, i; + struct kimage **dest_image, *image; + + /* We only trust the superuser with rebooting the system. */ + if (!capable(CAP_SYS_BOOT) || kexec_load_disabled) + return -EPERM; + + /* Make sure we have a legal set of flags */ + if (flags != (flags & KEXEC_FILE_FLAGS)) + return -EINVAL; + + image = NULL; + + if (!mutex_trylock(&kexec_mutex)) + return -EBUSY; + + dest_image = &kexec_image; + if (flags & KEXEC_FILE_ON_CRASH) { + dest_image = &kexec_crash_image; + if (kexec_crash_image) + arch_kexec_unprotect_crashkres(); + } + + if (flags & KEXEC_FILE_UNLOAD) + goto exchange; + + /* + * In case of crash, new kernel gets loaded in reserved region. It is + * same memory where old crash kernel might be loaded. Free any + * current crash dump kernel before we corrupt it. + */ + if (flags & KEXEC_FILE_ON_CRASH) + kimage_free(xchg(&kexec_crash_image, NULL)); + + ret = kimage_file_alloc_init(&image, kernel_fd, initrd_fd, cmdline_ptr, + cmdline_len, flags); + if (ret) + goto out; + + ret = machine_kexec_prepare(image); + if (ret) + goto out; + + /* + * Some architecture(like S390) may touch the crash memory before + * machine_kexec_prepare(), we must copy vmcoreinfo data after it. + */ + ret = kimage_crash_copy_vmcoreinfo(image); + if (ret) + goto out; + + ret = kexec_calculate_store_digests(image); + if (ret) + goto out; + + for (i = 0; i < image->nr_segments; i++) { + struct kexec_segment *ksegment; + + ksegment = &image->segment[i]; + pr_debug("Loading segment %d: buf=0x%p bufsz=0x%zx mem=0x%lx memsz=0x%zx\n", + i, ksegment->buf, ksegment->bufsz, ksegment->mem, + ksegment->memsz); + + ret = kimage_load_segment(image, &image->segment[i]); + if (ret) + goto out; + } + + kimage_terminate(image); + + /* + * Free up any temporary buffers allocated which are not needed + * after image has been loaded + */ + kimage_file_post_load_cleanup(image); +exchange: + image = xchg(dest_image, image); +out: + if ((flags & KEXEC_FILE_ON_CRASH) && kexec_crash_image) + arch_kexec_protect_crashkres(); + + mutex_unlock(&kexec_mutex); + kimage_free(image); + return ret; +} + static int locate_mem_hole_top_down(unsigned long start, unsigned long end, struct kexec_buf *kbuf) { @@ -501,8 +592,60 @@ static int locate_mem_hole_callback(struct resource *res, void *arg) return locate_mem_hole_bottom_up(start, end, kbuf); } +#ifdef CONFIG_ARCH_DISCARD_MEMBLOCK +static int kexec_walk_memblock(struct kexec_buf *kbuf, + int (*func)(struct resource *, void *)) +{ + return 0; +} +#else +static int kexec_walk_memblock(struct kexec_buf *kbuf, + int (*func)(struct resource *, void *)) +{ + int ret = 0; + u64 i; + phys_addr_t mstart, mend; + struct resource res = { }; + + if (kbuf->image->type == KEXEC_TYPE_CRASH) + return func(&crashk_res, kbuf); + + if (kbuf->top_down) { + for_each_free_mem_range_reverse(i, NUMA_NO_NODE, MEMBLOCK_NONE, + &mstart, &mend, NULL) { + /* + * In memblock, end points to the first byte after the + * range while in kexec, end points to the last byte + * in the range. + */ + res.start = mstart; + res.end = mend - 1; + ret = func(&res, kbuf); + if (ret) + break; + } + } else { + for_each_free_mem_range(i, NUMA_NO_NODE, MEMBLOCK_NONE, + &mstart, &mend, NULL) { + /* + * In memblock, end points to the first byte after the + * range while in kexec, end points to the last byte + * in the range. + */ + res.start = mstart; + res.end = mend - 1; + ret = func(&res, kbuf); + if (ret) + break; + } + } + + return ret; +} +#endif + /** - * arch_kexec_walk_mem - call func(data) on free memory regions + * kexec_walk_resources - call func(data) on free memory regions * @kbuf: Context info for the search. Also passed to @func. * @func: Function to call for each memory region. * @@ -510,8 +653,8 @@ static int locate_mem_hole_callback(struct resource *res, void *arg) * and that value will be returned. If all free regions are visited without * func returning non-zero, then zero will be returned. */ -int __weak arch_kexec_walk_mem(struct kexec_buf *kbuf, - int (*func)(struct resource *, void *)) +static int kexec_walk_resources(struct kexec_buf *kbuf, + int (*func)(struct resource *, void *)) { if (kbuf->image->type == KEXEC_TYPE_CRASH) return walk_iomem_res_desc(crashk_res.desc, @@ -534,7 +677,14 @@ int kexec_locate_mem_hole(struct kexec_buf *kbuf) { int ret; - ret = arch_kexec_walk_mem(kbuf, locate_mem_hole_callback); + /* Arch knows where to place */ + if (kbuf->mem != KEXEC_BUF_MEM_UNKNOWN) + return 0; + + if (IS_ENABLED(CONFIG_ARCH_DISCARD_MEMBLOCK)) + ret = kexec_walk_resources(kbuf, locate_mem_hole_callback); + else + ret = kexec_walk_memblock(kbuf, locate_mem_hole_callback); return ret == 1 ? 0 : -EADDRNOTAVAIL; } diff --git a/lib/Makefile b/lib/Makefile index 01f8051b4..455797430 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -213,7 +213,7 @@ KASAN_SANITIZE_stackdepot.o := n KCOV_INSTRUMENT_stackdepot.o := n libfdt_files = fdt.o fdt_ro.o fdt_wip.o fdt_rw.o fdt_sw.o fdt_strerror.o \ - fdt_empty_tree.o + fdt_empty_tree.o fdt_addresses.o $(foreach file, $(libfdt_files), \ $(eval CFLAGS_$(file) = -I$(src)/../scripts/dtc/libfdt)) lib-$(CONFIG_LIBFDT) += $(libfdt_files) diff --git a/lib/fdt_addresses.c b/lib/fdt_addresses.c new file mode 100644 index 000000000..23610bcf3 --- /dev/null +++ b/lib/fdt_addresses.c @@ -0,0 +1,2 @@ +#include <linux/libfdt_env.h> +#include "../scripts/dtc/libfdt/fdt_addresses.c" diff --git a/scripts/dtc/libfdt/fdt_addresses.c b/scripts/dtc/libfdt/fdt_addresses.c index eff4dbcc7..8211d00ba 100644 --- a/scripts/dtc/libfdt/fdt_addresses.c +++ b/scripts/dtc/libfdt/fdt_addresses.c @@ -94,3 +94,50 @@ int fdt_size_cells(const void *fdt, int nodeoffset) return val; } + +/* This function assumes that [address|size]_cells is 1 or 2 */ +int fdt_appendprop_addrrange(void *fdt, int parent, int nodeoffset, + const char *name, uint64_t addr, uint64_t size) +{ + int addr_cells, size_cells, ret; + uint8_t data[sizeof(fdt64_t) * 2], *prop; + + ret = fdt_address_cells(fdt, parent); + if (ret < 0) + return ret; + addr_cells = ret; + + ret = fdt_size_cells(fdt, parent); + if (ret < 0) + return ret; + size_cells = ret; + + /* check validity of address */ + prop = data; + if (addr_cells == 1) { + if ((addr > UINT32_MAX) || ((UINT32_MAX + 1 - addr) < size)) + return -FDT_ERR_BADVALUE; + + fdt32_st(prop, (uint32_t)addr); + } else if (addr_cells == 2) { + fdt64_st(prop, addr); + } else { + return -FDT_ERR_BADNCELLS; + } + + /* check validity of size */ + prop += addr_cells * sizeof(fdt32_t); + if (size_cells == 1) { + if (size > UINT32_MAX) + return -FDT_ERR_BADVALUE; + + fdt32_st(prop, (uint32_t)size); + } else if (size_cells == 2) { + fdt64_st(prop, size); + } else { + return -FDT_ERR_BADNCELLS; + } + + return fdt_appendprop(fdt, nodeoffset, name, data, + (addr_cells + size_cells) * sizeof(fdt32_t)); +} diff --git a/scripts/dtc/libfdt/libfdt.h b/scripts/dtc/libfdt/libfdt.h index 1e27780e1..da72b54c4 100644 --- a/scripts/dtc/libfdt/libfdt.h +++ b/scripts/dtc/libfdt/libfdt.h @@ -153,6 +153,30 @@ static inline void *fdt_offset_ptr_w(void *fdt, int offset, int checklen) uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset); +static inline void fdt32_st(void *property, uint32_t value) +{ + uint8_t *bp = property; + + bp[0] = value >> 24; + bp[1] = (value >> 16) & 0xff; + bp[2] = (value >> 8) & 0xff; + bp[3] = value & 0xff; +} + +static inline void fdt64_st(void *property, uint64_t value) +{ + uint8_t *bp = property; + + bp[0] = value >> 56; + bp[1] = (value >> 48) & 0xff; + bp[2] = (value >> 40) & 0xff; + bp[3] = (value >> 32) & 0xff; + bp[4] = (value >> 24) & 0xff; + bp[5] = (value >> 16) & 0xff; + bp[6] = (value >> 8) & 0xff; + bp[7] = value & 0xff; +} + /**********************************************************************/ /* Traversal functions */ /**********************************************************************/ @@ -1765,6 +1789,43 @@ static inline int fdt_appendprop_cell(void *fdt, int nodeoffset, #define fdt_appendprop_string(fdt, nodeoffset, name, str) \ fdt_appendprop((fdt), (nodeoffset), (name), (str), strlen(str)+1) +/** + * fdt_appendprop_addrrange - append a address range property + * @fdt: pointer to the device tree blob + * @parent: offset of the parent node + * @nodeoffset: offset of the node to add a property at + * @name: name of property + * @addr: start address of a given range + * @size: size of a given range + * + * fdt_appendprop_addrrange() appends an address range value (start + * address and size) to the value of the named property in the given + * node, or creates a new property with that value if it does not + * already exist. + * If "name" is not specified, a default "reg" is used. + * Cell sizes are determined by parent's #address-cells and #size-cells. + * + * This function may insert data into the blob, and will therefore + * change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid + * #address-cells property + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADVALUE, addr or size doesn't fit to respective cells size + * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to + * contain a new property + * -FDT_ERR_TRUNCATED, standard meanings + */ +int fdt_appendprop_addrrange(void *fdt, int parent, int nodeoffset, + const char *name, uint64_t addr, uint64_t size); + /** * fdt_delprop - delete a property * @fdt: pointer to the device tree blob diff --git a/security/integrity/Kconfig b/security/integrity/Kconfig index da9565891..4b4d2aeef 100644 --- a/security/integrity/Kconfig +++ b/security/integrity/Kconfig @@ -51,6 +51,17 @@ config INTEGRITY_TRUSTED_KEYRING .evm keyrings be signed by a key on the system trusted keyring. +config INTEGRITY_PLATFORM_KEYRING + bool "Provide keyring for platform/firmware trusted keys" + depends on INTEGRITY_ASYMMETRIC_KEYS + depends on SYSTEM_BLACKLIST_KEYRING + depends on EFI + help + Provide a separate, distinct keyring for platform trusted keys, which + the kernel automatically populates during initialization from values + provided by the platform for verifying the kexec'ed kerned image + and, possibly, the initramfs signature. + config INTEGRITY_AUDIT bool "Enables integrity auditing support " depends on AUDIT diff --git a/security/integrity/Makefile b/security/integrity/Makefile index 04d6e462b..86df9aba8 100644 --- a/security/integrity/Makefile +++ b/security/integrity/Makefile @@ -9,6 +9,11 @@ integrity-y := iint.o integrity-$(CONFIG_INTEGRITY_AUDIT) += integrity_audit.o integrity-$(CONFIG_INTEGRITY_SIGNATURE) += digsig.o integrity-$(CONFIG_INTEGRITY_ASYMMETRIC_KEYS) += digsig_asymmetric.o +integrity-$(CONFIG_INTEGRITY_PLATFORM_KEYRING) += platform_certs/platform_keyring.o \ + platform_certs/efi_parser.o \ + platform_certs/load_uefi.o +obj-$(CONFIG_LOAD_UEFI_KEYS) += platform_certs/load_uefi.o +$(obj)/load_uefi.o: KBUILD_CFLAGS += -fshort-wchar subdir-$(CONFIG_IMA) += ima obj-$(CONFIG_IMA) += ima/ diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c index 9bb0a7f28..c585ca8db 100644 --- a/security/integrity/digsig.c +++ b/security/integrity/digsig.c @@ -35,6 +35,7 @@ static const char *keyring_name[INTEGRITY_KEYRING_MAX] = { ".ima", #endif "_module", + ".platform", }; #ifdef CONFIG_INTEGRITY_TRUSTED_KEYRING @@ -79,12 +80,42 @@ int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen, return -EOPNOTSUPP; } -int __init integrity_init_keyring(const unsigned int id) +static int __init __integrity_init_keyring(const unsigned int id, + key_perm_t perm, + struct key_restriction *restriction) { const struct cred *cred = current_cred(); - struct key_restriction *restriction; int err = 0; + keyring[id] = keyring_alloc(keyring_name[id], KUIDT_INIT(0), + KGIDT_INIT(0), cred, perm, + KEY_ALLOC_NOT_IN_QUOTA, restriction, NULL); + if (IS_ERR(keyring[id])) { + err = PTR_ERR(keyring[id]); + pr_info("Can't allocate %s keyring (%d)\n", + keyring_name[id], err); + keyring[id] = NULL; + } else { + if (id == INTEGRITY_KEYRING_PLATFORM) + set_platform_trusted_keys(keyring[id]); + } + + return err; +} + +int __init integrity_init_keyring(const unsigned int id) +{ + struct key_restriction *restriction; + key_perm_t perm; + + perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW + | KEY_USR_READ | KEY_USR_SEARCH; + + if (id == INTEGRITY_KEYRING_PLATFORM) { + restriction = NULL; + goto out; + } + if (!init_keyring) return 0; @@ -93,32 +124,43 @@ int __init integrity_init_keyring(const unsigned int id) return -ENOMEM; restriction->check = restrict_link_to_ima; + perm |= KEY_USR_WRITE; - keyring[id] = keyring_alloc(keyring_name[id], KUIDT_INIT(0), - KGIDT_INIT(0), cred, - ((KEY_POS_ALL & ~KEY_POS_SETATTR) | - KEY_USR_VIEW | KEY_USR_READ | - KEY_USR_WRITE | KEY_USR_SEARCH), - KEY_ALLOC_NOT_IN_QUOTA, - restriction, NULL); - if (IS_ERR(keyring[id])) { - err = PTR_ERR(keyring[id]); - pr_info("Can't allocate %s keyring (%d)\n", - keyring_name[id], err); - keyring[id] = NULL; +out: + return __integrity_init_keyring(id, perm, restriction); +} + +int __init integrity_add_key(const unsigned int id, const void *data, + off_t size, key_perm_t perm) +{ + key_ref_t key; + int rc = 0; + + if (!keyring[id]) + return -EINVAL; + + key = key_create_or_update(make_key_ref(keyring[id], 1), "asymmetric", + NULL, data, size, perm, + KEY_ALLOC_NOT_IN_QUOTA); + if (IS_ERR(key)) { + rc = PTR_ERR(key); + pr_err("Problem loading X.509 certificate %d\n", rc); + } else { + pr_notice("Loaded X.509 cert '%s'\n", + key_ref_to_ptr(key)->description); + key_ref_put(key); } - return err; + + return rc; + } int __init integrity_load_x509(const unsigned int id, const char *path) { - key_ref_t key; void *data; loff_t size; int rc; - - if (!keyring[id]) - return -EINVAL; + key_perm_t perm; rc = kernel_read_file_from_path(path, &data, &size, 0, READING_X509_CERTIFICATE); @@ -127,23 +169,21 @@ int __init integrity_load_x509(const unsigned int id, const char *path) return rc; } - key = key_create_or_update(make_key_ref(keyring[id], 1), - "asymmetric", - NULL, - data, - size, - ((KEY_POS_ALL & ~KEY_POS_SETATTR) | - KEY_USR_VIEW | KEY_USR_READ), - KEY_ALLOC_NOT_IN_QUOTA); - if (IS_ERR(key)) { - rc = PTR_ERR(key); - pr_err("Problem loading X.509 certificate (%d): %s\n", - rc, path); - } else { - pr_notice("Loaded X.509 cert '%s': %s\n", - key_ref_to_ptr(key)->description, path); - key_ref_put(key); - } + perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW | KEY_USR_READ; + + pr_info("Loading X.509 certificate: %s\n", path); + rc = integrity_add_key(id, (const void *)data, size, perm); + vfree(data); - return 0; + return rc; +} + +int __init integrity_load_cert(const unsigned int id, const char *source, + const void *data, size_t len, key_perm_t perm) +{ + if (!data) + return -EINVAL; + + pr_info("Loading X.509 certificate: %s\n", source); + return integrity_add_key(id, data, len, perm); } diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c index 08aabf763..ad285f17d 100644 --- a/security/integrity/ima/ima_appraise.c +++ b/security/integrity/ima/ima_appraise.c @@ -294,12 +294,22 @@ int ima_appraise_measurement(enum ima_hooks func, case EVM_IMA_XATTR_DIGSIG: set_bit(IMA_DIGSIG, &iint->atomic_flags); rc = integrity_digsig_verify(INTEGRITY_KEYRING_IMA, - (const char *)xattr_value, rc, + (const char *)xattr_value, + xattr_len, iint->ima_hash->digest, iint->ima_hash->length); if (rc == -EOPNOTSUPP) { status = INTEGRITY_UNKNOWN; - } else if (rc) { + break; + } + if (IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING) && rc && + func == KEXEC_KERNEL_CHECK) + rc = integrity_digsig_verify(INTEGRITY_KEYRING_PLATFORM, + (const char *)xattr_value, + xattr_len, + iint->ima_hash->digest, + iint->ima_hash->length); + if (rc) { cause = "invalid-signature"; status = INTEGRITY_FAIL; } else { diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h index 0ec551223..0750bab0d 100644 --- a/security/integrity/integrity.h +++ b/security/integrity/integrity.h @@ -142,7 +142,8 @@ int integrity_kernel_read(struct file *file, loff_t offset, #define INTEGRITY_KEYRING_EVM 0 #define INTEGRITY_KEYRING_IMA 1 #define INTEGRITY_KEYRING_MODULE 2 -#define INTEGRITY_KEYRING_MAX 3 +#define INTEGRITY_KEYRING_PLATFORM 3 +#define INTEGRITY_KEYRING_MAX 4 extern struct dentry *integrity_dir; @@ -153,6 +154,8 @@ int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen, int __init integrity_init_keyring(const unsigned int id); int __init integrity_load_x509(const unsigned int id, const char *path); +int __init integrity_load_cert(const unsigned int id, const char *source, + const void *data, size_t len, key_perm_t perm); #else static inline int integrity_digsig_verify(const unsigned int id, @@ -166,6 +169,14 @@ static inline int integrity_init_keyring(const unsigned int id) { return 0; } + +static inline int __init integrity_load_cert(const unsigned int id, + const char *source, + const void *data, size_t len, + key_perm_t perm) +{ + return 0; +} #endif /* CONFIG_INTEGRITY_SIGNATURE */ #ifdef CONFIG_INTEGRITY_ASYMMETRIC_KEYS @@ -222,3 +233,13 @@ integrity_audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type) } #endif + +#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING +void __init add_to_platform_keyring(const char *source, const void *data, + size_t len); +#else +static inline void __init add_to_platform_keyring(const char *source, + const void *data, size_t len) +{ +} +#endif diff --git a/security/integrity/platform_certs/efi_parser.c b/security/integrity/platform_certs/efi_parser.c new file mode 100644 index 000000000..18f01f36f --- /dev/null +++ b/security/integrity/platform_certs/efi_parser.c @@ -0,0 +1,108 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* EFI signature/key/certificate list parser + * + * Copyright (C) 2012, 2016 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells(a)redhat.com) + */ + +#define pr_fmt(fmt) "EFI: "fmt +#include <linux/module.h> +#include <linux/printk.h> +#include <linux/err.h> +#include <linux/efi.h> + +/** + * parse_efi_signature_list - Parse an EFI signature list for certificates + * @source: The source of the key + * @data: The data blob to parse + * @size: The size of the data blob + * @get_handler_for_guid: Get the handler func for the sig type (or NULL) + * + * Parse an EFI signature list looking for elements of interest. A list is + * made up of a series of sublists, where all the elements in a sublist are of + * the same type, but sublists can be of different types. + * + * For each sublist encountered, the @get_handler_for_guid function is called + * with the type specifier GUID and returns either a pointer to a function to + * handle elements of that type or NULL if the type is not of interest. + * + * If the sublist is of interest, each element is passed to the handler + * function in turn. + * + * Error EBADMSG is returned if the list doesn't parse correctly and 0 is + * returned if the list was parsed correctly. No error can be returned from + * the @get_handler_for_guid function or the element handler function it + * returns. + */ +int __init parse_efi_signature_list( + const char *source, + const void *data, size_t size, + efi_element_handler_t (*get_handler_for_guid)(const efi_guid_t *)) +{ + efi_element_handler_t handler; + unsigned int offs = 0; + + pr_devel("-->%s(,%zu)\n", __func__, size); + + while (size > 0) { + const efi_signature_data_t *elem; + efi_signature_list_t list; + size_t lsize, esize, hsize, elsize; + + if (size < sizeof(list)) + return -EBADMSG; + + memcpy(&list, data, sizeof(list)); + pr_devel("LIST[%04x] guid=%pUl ls=%x hs=%x ss=%x\n", + offs, + list.signature_type.b, list.signature_list_size, + list.signature_header_size, list.signature_size); + + lsize = list.signature_list_size; + hsize = list.signature_header_size; + esize = list.signature_size; + elsize = lsize - sizeof(list) - hsize; + + if (lsize > size) { + pr_devel("<--%s() = -EBADMSG [overrun @%x]\n", + __func__, offs); + return -EBADMSG; + } + + if (lsize < sizeof(list) || + lsize - sizeof(list) < hsize || + esize < sizeof(*elem) || + elsize < esize || + elsize % esize != 0) { + pr_devel("- bad size combo @%x\n", offs); + return -EBADMSG; + } + + handler = get_handler_for_guid(&list.signature_type); + if (!handler) { + data += lsize; + size -= lsize; + offs += lsize; + continue; + } + + data += sizeof(list) + hsize; + size -= sizeof(list) + hsize; + offs += sizeof(list) + hsize; + + for (; elsize > 0; elsize -= esize) { + elem = data; + + pr_devel("ELEM[%04x]\n", offs); + handler(source, + &elem->signature_data, + esize - sizeof(*elem)); + + data += esize; + size -= esize; + offs += esize; + } + } + + return 0; +} diff --git a/security/integrity/platform_certs/load_uefi.c b/security/integrity/platform_certs/load_uefi.c new file mode 100644 index 000000000..81b19c528 --- /dev/null +++ b/security/integrity/platform_certs/load_uefi.c @@ -0,0 +1,194 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/cred.h> +#include <linux/err.h> +#include <linux/efi.h> +#include <linux/slab.h> +#include <keys/asymmetric-type.h> +#include <keys/system_keyring.h> +#include "../integrity.h" + +static efi_guid_t efi_cert_x509_guid __initdata = EFI_CERT_X509_GUID; +static efi_guid_t efi_cert_x509_sha256_guid __initdata = + EFI_CERT_X509_SHA256_GUID; +static efi_guid_t efi_cert_sha256_guid __initdata = EFI_CERT_SHA256_GUID; + +/* + * Look to see if a UEFI variable called MokIgnoreDB exists and return true if + * it does. + * + * This UEFI variable is set by the shim if a user tells the shim to not use + * the certs/hashes in the UEFI db variable for verification purposes. If it + * is set, we should ignore the db variable also and the true return indicates + * this. + */ +static __init bool uefi_check_ignore_db(void) +{ + efi_status_t status; + unsigned int db = 0; + unsigned long size = sizeof(db); + efi_guid_t guid = EFI_SHIM_LOCK_GUID; + + status = efi.get_variable(L"MokIgnoreDB", &guid, NULL, &size, &db); + return status == EFI_SUCCESS; +} + +/* + * Get a certificate list blob from the named EFI variable. + */ +static __init void *get_cert_list(efi_char16_t *name, efi_guid_t *guid, + unsigned long *size) +{ + efi_status_t status; + unsigned long lsize = 4; + unsigned long tmpdb[4]; + void *db; + + status = efi.get_variable(name, guid, NULL, &lsize, &tmpdb); + if (status != EFI_BUFFER_TOO_SMALL) { + pr_err("Couldn't get size: 0x%lx\n", status); + return NULL; + } + + db = kmalloc(lsize, GFP_KERNEL); + if (!db) + return NULL; + + status = efi.get_variable(name, guid, NULL, &lsize, db); + if (status != EFI_SUCCESS) { + kfree(db); + pr_err("Error reading db var: 0x%lx\n", status); + return NULL; + } + + *size = lsize; + return db; +} + +/* + * Blacklist a hash. + */ +static __init void uefi_blacklist_hash(const char *source, const void *data, + size_t len, const char *type, + size_t type_len) +{ + char *hash, *p; + + hash = kmalloc(type_len + len * 2 + 1, GFP_KERNEL); + if (!hash) + return; + p = memcpy(hash, type, type_len); + p += type_len; + bin2hex(p, data, len); + p += len * 2; + *p = 0; + + mark_hash_blacklisted(hash); + kfree(hash); +} + +/* + * Blacklist an X509 TBS hash. + */ +static __init void uefi_blacklist_x509_tbs(const char *source, + const void *data, size_t len) +{ + uefi_blacklist_hash(source, data, len, "tbs:", 4); +} + +/* + * Blacklist the hash of an executable. + */ +static __init void uefi_blacklist_binary(const char *source, + const void *data, size_t len) +{ + uefi_blacklist_hash(source, data, len, "bin:", 4); +} + +/* + * Return the appropriate handler for particular signature list types found in + * the UEFI db and MokListRT tables. + */ +static __init efi_element_handler_t get_handler_for_db(const efi_guid_t * + sig_type) +{ + if (efi_guidcmp(*sig_type, efi_cert_x509_guid) == 0) + return add_to_platform_keyring; + return 0; +} + +/* + * Return the appropriate handler for particular signature list types found in + * the UEFI dbx and MokListXRT tables. + */ +static __init efi_element_handler_t get_handler_for_dbx(const efi_guid_t * + sig_type) +{ + if (efi_guidcmp(*sig_type, efi_cert_x509_sha256_guid) == 0) + return uefi_blacklist_x509_tbs; + if (efi_guidcmp(*sig_type, efi_cert_sha256_guid) == 0) + return uefi_blacklist_binary; + return 0; +} + +/* + * Load the certs contained in the UEFI databases into the platform trusted + * keyring and the UEFI blacklisted X.509 cert SHA256 hashes into the blacklist + * keyring. + */ +static int __init load_uefi_certs(void) +{ + efi_guid_t secure_var = EFI_IMAGE_SECURITY_DATABASE_GUID; + efi_guid_t mok_var = EFI_SHIM_LOCK_GUID; + void *db = NULL, *dbx = NULL, *mok = NULL; + unsigned long dbsize = 0, dbxsize = 0, moksize = 0; + int rc = 0; + + if (!efi.get_variable) + return false; + + /* Get db, MokListRT, and dbx. They might not exist, so it isn't + * an error if we can't get them. + */ + if (!uefi_check_ignore_db()) { + db = get_cert_list(L"db", &secure_var, &dbsize); + if (!db) { + pr_err("MODSIGN: Couldn't get UEFI db list\n"); + } else { + rc = parse_efi_signature_list("UEFI:db", + db, dbsize, get_handler_for_db); + if (rc) + pr_err("Couldn't parse db signatures: %d\n", + rc); + kfree(db); + } + } + + mok = get_cert_list(L"MokListRT", &mok_var, &moksize); + if (!mok) { + pr_info("Couldn't get UEFI MokListRT\n"); + } else { + rc = parse_efi_signature_list("UEFI:MokListRT", + mok, moksize, get_handler_for_db); + if (rc) + pr_err("Couldn't parse MokListRT signatures: %d\n", rc); + kfree(mok); + } + + dbx = get_cert_list(L"dbx", &secure_var, &dbxsize); + if (!dbx) { + pr_info("Couldn't get UEFI dbx list\n"); + } else { + rc = parse_efi_signature_list("UEFI:dbx", + dbx, dbxsize, + get_handler_for_dbx); + if (rc) + pr_err("Couldn't parse dbx signatures: %d\n", rc); + kfree(dbx); + } + + return rc; +} +late_initcall(load_uefi_certs); diff --git a/security/integrity/platform_certs/platform_keyring.c b/security/integrity/platform_certs/platform_keyring.c new file mode 100644 index 000000000..bcafd7387 --- /dev/null +++ b/security/integrity/platform_certs/platform_keyring.c @@ -0,0 +1,58 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Platform keyring for firmware/platform keys + * + * Copyright IBM Corporation, 2018 + * Author(s): Nayna Jain <nayna(a)linux.ibm.com> + */ + +#include <linux/export.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/cred.h> +#include <linux/err.h> +#include <linux/slab.h> +#include "../integrity.h" + +/** + * add_to_platform_keyring - Add to platform keyring without validation. + * @source: Source of key + * @data: The blob holding the key + * @len: The length of the data blob + * + * Add a key to the platform keyring without checking its trust chain. This + * is available only during kernel initialisation. + */ +void __init add_to_platform_keyring(const char *source, const void *data, + size_t len) +{ + key_perm_t perm; + int rc; + + perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW; + + rc = integrity_load_cert(INTEGRITY_KEYRING_PLATFORM, source, data, len, + perm); + if (rc) + pr_info("Error adding keys to platform keyring %s\n", source); +} + +/* + * Create the trusted keyrings. + */ +static __init int platform_keyring_init(void) +{ + int rc; + + rc = integrity_init_keyring(INTEGRITY_KEYRING_PLATFORM); + if (rc) + return rc; + + pr_notice("Platform Keyring initialized\n"); + return 0; +} + +/* + * Must be initialised before we try and load the keys into the keyring. + */ +device_initcall(platform_keyring_init); -- 2.27.0

1 0

[PATCH openEuler-1.0-LTS 0/5] drm/hisilicon: Fix hibmc did not get edid
by Gou Hao 18 Sep '21

18 Sep '21

From: gouhao <gouhao(a)uniontech.com> Fix hibmc did not get edid. issue: https://gitee.com/openeuler/kernel/issues/I469VQ gouhao (5): drm-Split-out-drm_probe_helper.h drm-Add-ddc-link-in-sysfs-created-by-drm_connector drm-Add-drm_connector_init-variant-with-ddc drm/hisilicon: Support i2c driver algorithms for bit-shift adapters drm/hisilicon: Features to support reading resolutions from EDID drivers/gpu/drm/drm_connector.c | 35 +++++++ drivers/gpu/drm/drm_sysfs.c | 8 ++ drivers/gpu/drm/hisilicon/hibmc/Makefile | 3 +- .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h | 26 +++++ .../gpu/drm/hisilicon/hibmc/hibmc_drm_i2c.c | 99 +++++++++++++++++++ .../gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c | 55 ++++++++--- include/drm/drm_connector.h | 18 ++++ include/drm/drm_probe_helper.h | 27 +++++ 8 files changed, 256 insertions(+), 15 deletions(-) create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_i2c.c create mode 100644 include/drm/drm_probe_helper.h -- 2.20.1

2 6

[PATCH openEuler-1.0-LTS 1/3] block: check if a profile is actually registered in blk_integrity_unregister
by Yang Yingliang 17 Sep '21

17 Sep '21

From: Christoph Hellwig <hch(a)lst.de> mainline inclusion from mainline-v5.15 commit 783a40a1b3ac7f3714d2776fa8ac8cce3535e4f6 category: bugfix bugzilla: 181328 CVE: NA ----------------------------------------------- While clearing the profile itself is harmless, we really should not clear the stable writes flag if it wasn't set due to a registered integrity profile. Reported-by: Lihong Kou <koulihong(a)huawei.com> Signed-off-by: Christoph Hellwig <hch(a)lst.de> Reviewed-by: Sagi Grimberg <sagi(a)grimberg.me> Link: https://lore.kernel.org/r/20210914070657.87677-2-hch@lst.de Signed-off-by: Jens Axboe <axboe(a)kernel.dk> Signed-off-by: Yu Kuai <yukuai3(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- block/blk-integrity.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/block/blk-integrity.c b/block/blk-integrity.c index 6121611e13164..0638f4868f705 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -431,8 +431,13 @@ EXPORT_SYMBOL(blk_integrity_register); */ void blk_integrity_unregister(struct gendisk *disk) { + struct blk_integrity *bi = &disk->queue->integrity; + + if (!bi->profile) + return; + disk->queue->backing_dev_info->capabilities &= ~BDI_CAP_STABLE_WRITES; - memset(&disk->queue->integrity, 0, sizeof(struct blk_integrity)); + memset(bi, 0, sizeof(*bi)); } EXPORT_SYMBOL(blk_integrity_unregister); -- 2.25.1

1 2

[PATCH kernel-4.19 1/3] block: check if a profile is actually registered in blk_integrity_unregister
by Yang Yingliang 17 Sep '21

17 Sep '21

From: Christoph Hellwig <hch(a)lst.de> mainline inclusion from block-5.15 commit 783a40a1b3ac7f3714d2776fa8ac8cce3535e4f6 category: bugfix bugzilla: 181328 CVE: NA ----------------------------------------------- While clearing the profile itself is harmless, we really should not clear the stable writes flag if it wasn't set due to a registered integrity profile. Reported-by: Lihong Kou <koulihong(a)huawei.com> Signed-off-by: Christoph Hellwig <hch(a)lst.de> Reviewed-by: Sagi Grimberg <sagi(a)grimberg.me> Link: https://lore.kernel.org/r/20210914070657.87677-2-hch@lst.de Signed-off-by: Jens Axboe <axboe(a)kernel.dk> Signed-off-by: Yu Kuai <yukuai3(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- block/blk-integrity.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/block/blk-integrity.c b/block/blk-integrity.c index 6121611e13164..0638f4868f705 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -431,8 +431,13 @@ EXPORT_SYMBOL(blk_integrity_register); */ void blk_integrity_unregister(struct gendisk *disk) { + struct blk_integrity *bi = &disk->queue->integrity; + + if (!bi->profile) + return; + disk->queue->backing_dev_info->capabilities &= ~BDI_CAP_STABLE_WRITES; - memset(&disk->queue->integrity, 0, sizeof(struct blk_integrity)); + memset(bi, 0, sizeof(*bi)); } EXPORT_SYMBOL(blk_integrity_unregister); -- 2.25.1

1 2

[PATCH openEuler-1.0-LTS 01/11] Revert "nbd: use blk_mq_queue_tag_inflight_iter()"
by Yang Yingliang 17 Sep '21

17 Sep '21

From: Yu Kuai <yukuai3(a)huawei.com> hulk inclusion category: bugfix bugzilla: 34280, https://gitee.com/openeuler/kernel/issues/I4AKY4 CVE: NA ----------------------------------------------- This reverts commit a139227441d1a01bfce70e591dd6b17e126561fa. Signed-off-by: Yu Kuai <yukuai3(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- drivers/block/nbd.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index a82a5dc845c6f..6a72c07ce3cba 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -763,8 +763,7 @@ static void recv_work(struct work_struct *work) kfree(args); } -static void nbd_clear_req(struct blk_mq_hw_ctx *hctx, - struct request *req, void *data, bool reserved) +static void nbd_clear_req(struct request *req, void *data, bool reserved) { struct nbd_cmd *cmd = blk_mq_rq_to_pdu(req); @@ -778,7 +777,7 @@ static void nbd_clear_req(struct blk_mq_hw_ctx *hctx, static void nbd_clear_que(struct nbd_device *nbd) { blk_mq_quiesce_queue(nbd->disk->queue); - blk_mq_queue_tag_inflight_iter(nbd->disk->queue, nbd_clear_req, NULL); + blk_mq_tagset_busy_iter(&nbd->tag_set, nbd_clear_req, NULL); blk_mq_unquiesce_queue(nbd->disk->queue); dev_dbg(disk_to_dev(nbd->disk), "queue cleared\n"); } -- 2.25.1

1 10

[PATCH kernel-4.19 01/11] Revert "nbd: use blk_mq_queue_tag_inflight_iter()"
by Yang Yingliang 17 Sep '21

17 Sep '21

From: Yu Kuai <yukuai3(a)huawei.com> hulk inclusion category: bugfix bugzilla: 34280, https://gitee.com/openeuler/kernel/issues/I4AKY4 CVE: NA ----------------------------------------------- This reverts commit a139227441d1a01bfce70e591dd6b17e126561fa. Signed-off-by: Yu Kuai <yukuai3(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- drivers/block/nbd.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 3a6b46aeacee4..f881c34e28661 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -763,8 +763,7 @@ static void recv_work(struct work_struct *work) kfree(args); } -static void nbd_clear_req(struct blk_mq_hw_ctx *hctx, - struct request *req, void *data, bool reserved) +static void nbd_clear_req(struct request *req, void *data, bool reserved) { struct nbd_cmd *cmd = blk_mq_rq_to_pdu(req); @@ -778,7 +777,7 @@ static void nbd_clear_req(struct blk_mq_hw_ctx *hctx, static void nbd_clear_que(struct nbd_device *nbd) { blk_mq_quiesce_queue(nbd->disk->queue); - blk_mq_queue_tag_inflight_iter(nbd->disk->queue, nbd_clear_req, NULL); + blk_mq_tagset_busy_iter(&nbd->tag_set, nbd_clear_req, NULL); blk_mq_unquiesce_queue(nbd->disk->queue); dev_dbg(disk_to_dev(nbd->disk), "queue cleared\n"); } -- 2.25.1

1 10

[PATCH] arm64: smp: Fix cpu_freq print for NMI watchdog
by Wenchao Qin 17 Sep '21

17 Sep '21

hulk inclusion category: bugfix bugzilla: N/A CVE: N/A ------------------------------ When we are in the arch_get_cpu_freq func for the first time, after arch_probe_cpu_freq is excuted, the return of smp_processor_id() will change due to preemption while cpu_freq get the freq belong to original processor id, so pr_info will print the freq with wrong processor id like below table from dmesg: [ 1.713211] NMI watchdog: CPU1 freq probed as 2189072384 HZ. [ 1.810819] NMI watchdog: CPU1 freq probed as 2192003108 HZ. [ 1.909910] NMI watchdog: CPU2 freq probed as 2191345967 HZ. [ 2.015327] NMI watchdog: CPU3 freq probed as 2189460398 HZ. Actually, the first line should print the freq of CPU0, this bu can occur in virtual machine with less then 17 vCPUs. Changing smp_processor_id() to cpu will fix the bug Signed-off-by: Wenchao Qin <qinwenchao(a)cmss.chinamobile.com> --- arch/arm64/kernel/smp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index fe56277..d685a27 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -1457,7 +1457,7 @@ static u64 arch_get_cpu_freq(void) if (!cpu_freq) { cpu_freq = arch_probe_cpu_freq(); pr_info("NMI watchdog: CPU%u freq probed as %llu HZ.\n", - smp_processor_id(), cpu_freq); + cpu, cpu_freq); if (!cpu_freq) cpu_freq = -1; per_cpu(cpu_freq_probed, cpu) = cpu_freq; -- 1.8.3.1

1 0

[PATCH openEuler-1.0-LTS] blk-cgroup: fix UAF by grabbing blkcg lock before destroying blkg pd
by Yang Yingliang 17 Sep '21

17 Sep '21

From: Laibin Qiu <qiulaibin(a)huawei.com> hulk inclusion category: bugfix bugzilla: 181879, https://gitee.com/openeuler/kernel/issues/I4AJ00 CVE: NA -------------------------- KASAN reports a use-after-free report when doing fuzz test: [693354.104835] ================================================================== [693354.105094] BUG: KASAN: use-after-free in bfq_io_set_weight_legacy+0xd3/0x160 [693354.105336] Read of size 4 at addr ffff888be0a35664 by task sh/1453338 [693354.105607] CPU: 41 PID: 1453338 Comm: sh Kdump: loaded Not tainted 4.18.0-147 [693354.105610] Hardware name: Huawei 2288H V5/BC11SPSCB0, BIOS 0.81 07/02/2018 [693354.105612] Call Trace: [693354.105621] dump_stack+0xf1/0x19b [693354.105626] ? show_regs_print_info+0x5/0x5 [693354.105634] ? printk+0x9c/0xc3 [693354.105638] ? cpumask_weight+0x1f/0x1f [693354.105648] print_address_description+0x70/0x360 [693354.105654] kasan_report+0x1b2/0x330 [693354.105659] ? bfq_io_set_weight_legacy+0xd3/0x160 [693354.105665] ? bfq_io_set_weight_legacy+0xd3/0x160 [693354.105670] bfq_io_set_weight_legacy+0xd3/0x160 [693354.105675] ? bfq_cpd_init+0x20/0x20 [693354.105683] cgroup_file_write+0x3aa/0x510 [693354.105693] ? ___slab_alloc+0x507/0x540 [693354.105698] ? cgroup_file_poll+0x60/0x60 [693354.105702] ? 0xffffffff89600000 [693354.105708] ? usercopy_abort+0x90/0x90 [693354.105716] ? mutex_lock+0xef/0x180 [693354.105726] kernfs_fop_write+0x1ab/0x280 [693354.105732] ? cgroup_file_poll+0x60/0x60 [693354.105738] vfs_write+0xe7/0x230 [693354.105744] ksys_write+0xb0/0x140 [693354.105749] ? __ia32_sys_read+0x50/0x50 [693354.105760] do_syscall_64+0x112/0x370 [693354.105766] ? syscall_return_slowpath+0x260/0x260 [693354.105772] ? do_page_fault+0x9b/0x270 [693354.105779] ? prepare_exit_to_usermode+0xf9/0x1a0 [693354.105784] ? enter_from_user_mode+0x30/0x30 [693354.105793] entry_SYSCALL_64_after_hwframe+0x65/0xca [693354.105875] Allocated by task 1453337: [693354.106001] kasan_kmalloc+0xa0/0xd0 [693354.106006] kmem_cache_alloc_node_trace+0x108/0x220 [693354.106010] bfq_pd_alloc+0x96/0x120 [693354.106015] blkcg_activate_policy+0x1b7/0x2b0 [693354.106020] bfq_create_group_hierarchy+0x1e/0x80 [693354.106026] bfq_init_queue+0x678/0x8c0 [693354.106031] blk_mq_init_sched+0x1f8/0x460 [693354.106037] elevator_switch_mq+0xe1/0x240 [693354.106041] elevator_switch+0x25/0x40 [693354.106045] elv_iosched_store+0x1a1/0x230 [693354.106049] queue_attr_store+0x78/0xb0 [693354.106053] kernfs_fop_write+0x1ab/0x280 [693354.106056] vfs_write+0xe7/0x230 [693354.106060] ksys_write+0xb0/0x140 [693354.106064] do_syscall_64+0x112/0x370 [693354.106069] entry_SYSCALL_64_after_hwframe+0x65/0xca [693354.106114] Freed by task 1453336: [693354.106225] __kasan_slab_free+0x130/0x180 [693354.106229] kfree+0x90/0x1b0 [693354.106233] blkcg_deactivate_policy+0x12c/0x220 [693354.106238] bfq_exit_queue+0xf5/0x110 [693354.106241] blk_mq_exit_sched+0x104/0x130 [693354.106245] __elevator_exit+0x45/0x60 [693354.106249] elevator_switch_mq+0xd6/0x240 [693354.106253] elevator_switch+0x25/0x40 [693354.106257] elv_iosched_store+0x1a1/0x230 [693354.106261] queue_attr_store+0x78/0xb0 [693354.106264] kernfs_fop_write+0x1ab/0x280 [693354.106268] vfs_write+0xe7/0x230 [693354.106271] ksys_write+0xb0/0x140 [693354.106275] do_syscall_64+0x112/0x370 [693354.106280] entry_SYSCALL_64_after_hwframe+0x65/0xca [693354.106329] The buggy address belongs to the object at ffff888be0a35580 which belongs to the cache kmalloc-1k of size 1024 [693354.106736] The buggy address is located 228 bytes inside of 1024-byte region [ffff888be0a35580, ffff888be0a35980) [693354.107114] The buggy address belongs to the page: [693354.107273] page:ffffea002f828c00 count:1 mapcount:0 mapping:ffff888107c17080 index:0x0 compound_mapcount: 0 [693354.107606] flags: 0x17ffffc0008100(slab|head) [693354.107760] raw: 0017ffffc0008100 ffffea002fcbc808 ffffea0030bd3a08 ffff888107c17080 [693354.108020] raw: 0000000000000000 00000000001c001c 00000001ffffffff 0000000000000000 [693354.108278] page dumped because: kasan: bad access detected [693354.108511] Memory state around the buggy address: [693354.108671] ffff888be0a35500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [693354.116396] ffff888be0a35580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [693354.124473] >ffff888be0a35600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [693354.132421] ^ [693354.140284] ffff888be0a35680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [693354.147912] ffff888be0a35700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [693354.155281] ================================================================== blkgs are protected by both queue and blkcg locks and holding either should stabilize them. However, the path of destroying blkg policy data is only protected by queue lock in blkcg_activate_policy()/blkcg_deactivate_policy(). Other tasks can get the blkg policy data before the blkg policy data is destroyed, and use it after destroyed, which will result in a use-after-free. CPU0 CPU1 blkcg_deactivate_policy spin_lock_irq(&q->queue_lock) bfq_io_set_weight_legacy spin_lock_irq(&blkcg->lock) blkg_to_bfqg(blkg) pd_to_bfqg(blkg->pd[pol->plid]) ^^^^^^blkg->pd[pol->plid] != NULL bfqg != NULL pol->pd_free_fn(blkg->pd[pol->plid]) pd_to_bfqg(blkg->pd[pol->plid]) bfqg_put(bfqg) kfree(bfqg) blkg->pd[pol->plid] = NULL spin_unlock_irq(q->queue_lock); bfq_group_set_weight(bfqg, val, 0) bfqg->entity.new_weight ^^^^^^trigger uaf here spin_unlock_irq(&blkcg->lock); Fix by garbbing the matching blkcg lock before trying to destroy blkg policy data. [Resolve conflict in blkcg_activate_policy() flow due to lack of 9d179b865449b ("blkcg: Fix multiple bugs in blkcg_activate_policy()"). 4.18 no need to merge this patch. So there is no problem in blkcg_activate_policy() flow.] Signed-off-by: Li Jinlin <lijinlin3(a)huawei.com> Link: https://lore.kernel.org/linux-block/YUDLt9uBNLhWL6Gt@slm.duckdns.org/T/#r07… Signed-off-by: Laibin Qiu <qiulaibin(a)huawei.com> Reviewed-by: Jason Yan <yanaijie(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- block/blk-cgroup.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 7ded51051e0bc..592befc26584f 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -1509,12 +1509,16 @@ void blkcg_deactivate_policy(struct request_queue *q, __clear_bit(pol->plid, q->blkcg_pols); list_for_each_entry(blkg, &q->blkg_list, q_node) { + struct blkcg *blkcg = blkg->blkcg; + + spin_lock(&blkcg->lock); if (blkg->pd[pol->plid]) { if (pol->pd_offline_fn) pol->pd_offline_fn(blkg->pd[pol->plid]); pol->pd_free_fn(blkg->pd[pol->plid]); blkg->pd[pol->plid] = NULL; } + spin_unlock(&blkcg->lock); } spin_unlock_irq(q->queue_lock); -- 2.25.1

1 0

[PATCH kernel-4.19] blk-cgroup: fix UAF by grabbing blkcg lock before destroying blkg pd
by Yang Yingliang 17 Sep '21

17 Sep '21

From: Laibin Qiu <qiulaibin(a)huawei.com> hulk inclusion category: bugfix bugzilla: 181879, https://gitee.com/openeuler/kernel/issues/I4AJ00 CVE: NA -------------------------- KASAN reports a use-after-free report when doing fuzz test: [693354.104835] ================================================================== [693354.105094] BUG: KASAN: use-after-free in bfq_io_set_weight_legacy+0xd3/0x160 [693354.105336] Read of size 4 at addr ffff888be0a35664 by task sh/1453338 [693354.105607] CPU: 41 PID: 1453338 Comm: sh Kdump: loaded Not tainted 4.18.0-147 [693354.105610] Hardware name: Huawei 2288H V5/BC11SPSCB0, BIOS 0.81 07/02/2018 [693354.105612] Call Trace: [693354.105621] dump_stack+0xf1/0x19b [693354.105626] ? show_regs_print_info+0x5/0x5 [693354.105634] ? printk+0x9c/0xc3 [693354.105638] ? cpumask_weight+0x1f/0x1f [693354.105648] print_address_description+0x70/0x360 [693354.105654] kasan_report+0x1b2/0x330 [693354.105659] ? bfq_io_set_weight_legacy+0xd3/0x160 [693354.105665] ? bfq_io_set_weight_legacy+0xd3/0x160 [693354.105670] bfq_io_set_weight_legacy+0xd3/0x160 [693354.105675] ? bfq_cpd_init+0x20/0x20 [693354.105683] cgroup_file_write+0x3aa/0x510 [693354.105693] ? ___slab_alloc+0x507/0x540 [693354.105698] ? cgroup_file_poll+0x60/0x60 [693354.105702] ? 0xffffffff89600000 [693354.105708] ? usercopy_abort+0x90/0x90 [693354.105716] ? mutex_lock+0xef/0x180 [693354.105726] kernfs_fop_write+0x1ab/0x280 [693354.105732] ? cgroup_file_poll+0x60/0x60 [693354.105738] vfs_write+0xe7/0x230 [693354.105744] ksys_write+0xb0/0x140 [693354.105749] ? __ia32_sys_read+0x50/0x50 [693354.105760] do_syscall_64+0x112/0x370 [693354.105766] ? syscall_return_slowpath+0x260/0x260 [693354.105772] ? do_page_fault+0x9b/0x270 [693354.105779] ? prepare_exit_to_usermode+0xf9/0x1a0 [693354.105784] ? enter_from_user_mode+0x30/0x30 [693354.105793] entry_SYSCALL_64_after_hwframe+0x65/0xca [693354.105875] Allocated by task 1453337: [693354.106001] kasan_kmalloc+0xa0/0xd0 [693354.106006] kmem_cache_alloc_node_trace+0x108/0x220 [693354.106010] bfq_pd_alloc+0x96/0x120 [693354.106015] blkcg_activate_policy+0x1b7/0x2b0 [693354.106020] bfq_create_group_hierarchy+0x1e/0x80 [693354.106026] bfq_init_queue+0x678/0x8c0 [693354.106031] blk_mq_init_sched+0x1f8/0x460 [693354.106037] elevator_switch_mq+0xe1/0x240 [693354.106041] elevator_switch+0x25/0x40 [693354.106045] elv_iosched_store+0x1a1/0x230 [693354.106049] queue_attr_store+0x78/0xb0 [693354.106053] kernfs_fop_write+0x1ab/0x280 [693354.106056] vfs_write+0xe7/0x230 [693354.106060] ksys_write+0xb0/0x140 [693354.106064] do_syscall_64+0x112/0x370 [693354.106069] entry_SYSCALL_64_after_hwframe+0x65/0xca [693354.106114] Freed by task 1453336: [693354.106225] __kasan_slab_free+0x130/0x180 [693354.106229] kfree+0x90/0x1b0 [693354.106233] blkcg_deactivate_policy+0x12c/0x220 [693354.106238] bfq_exit_queue+0xf5/0x110 [693354.106241] blk_mq_exit_sched+0x104/0x130 [693354.106245] __elevator_exit+0x45/0x60 [693354.106249] elevator_switch_mq+0xd6/0x240 [693354.106253] elevator_switch+0x25/0x40 [693354.106257] elv_iosched_store+0x1a1/0x230 [693354.106261] queue_attr_store+0x78/0xb0 [693354.106264] kernfs_fop_write+0x1ab/0x280 [693354.106268] vfs_write+0xe7/0x230 [693354.106271] ksys_write+0xb0/0x140 [693354.106275] do_syscall_64+0x112/0x370 [693354.106280] entry_SYSCALL_64_after_hwframe+0x65/0xca [693354.106329] The buggy address belongs to the object at ffff888be0a35580 which belongs to the cache kmalloc-1k of size 1024 [693354.106736] The buggy address is located 228 bytes inside of 1024-byte region [ffff888be0a35580, ffff888be0a35980) [693354.107114] The buggy address belongs to the page: [693354.107273] page:ffffea002f828c00 count:1 mapcount:0 mapping:ffff888107c17080 index:0x0 compound_mapcount: 0 [693354.107606] flags: 0x17ffffc0008100(slab|head) [693354.107760] raw: 0017ffffc0008100 ffffea002fcbc808 ffffea0030bd3a08 ffff888107c17080 [693354.108020] raw: 0000000000000000 00000000001c001c 00000001ffffffff 0000000000000000 [693354.108278] page dumped because: kasan: bad access detected [693354.108511] Memory state around the buggy address: [693354.108671] ffff888be0a35500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [693354.116396] ffff888be0a35580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [693354.124473] >ffff888be0a35600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [693354.132421] ^ [693354.140284] ffff888be0a35680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [693354.147912] ffff888be0a35700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [693354.155281] ================================================================== blkgs are protected by both queue and blkcg locks and holding either should stabilize them. However, the path of destroying blkg policy data is only protected by queue lock in blkcg_activate_policy()/blkcg_deactivate_policy(). Other tasks can get the blkg policy data before the blkg policy data is destroyed, and use it after destroyed, which will result in a use-after-free. CPU0 CPU1 blkcg_deactivate_policy spin_lock_irq(&q->queue_lock) bfq_io_set_weight_legacy spin_lock_irq(&blkcg->lock) blkg_to_bfqg(blkg) pd_to_bfqg(blkg->pd[pol->plid]) ^^^^^^blkg->pd[pol->plid] != NULL bfqg != NULL pol->pd_free_fn(blkg->pd[pol->plid]) pd_to_bfqg(blkg->pd[pol->plid]) bfqg_put(bfqg) kfree(bfqg) blkg->pd[pol->plid] = NULL spin_unlock_irq(q->queue_lock); bfq_group_set_weight(bfqg, val, 0) bfqg->entity.new_weight ^^^^^^trigger uaf here spin_unlock_irq(&blkcg->lock); Fix by garbbing the matching blkcg lock before trying to destroy blkg policy data. Signed-off-by: Li Jinlin <lijinlin3(a)huawei.com> Link: https://lore.kernel.org/linux-block/YUDLt9uBNLhWL6Gt@slm.duckdns.org/T/#r07… Signed-off-by: Laibin Qiu <qiulaibin(a)huawei.com> Reviewed-by: Jason Yan <yanaijie(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- block/blk-cgroup.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 05980d1a03f70..492e49f8e76c0 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -1531,10 +1531,14 @@ int blkcg_activate_policy(struct request_queue *q, /* alloc failed, nothing's initialized yet, free everything */ spin_lock_irq(q->queue_lock); list_for_each_entry(blkg, &q->blkg_list, q_node) { + struct blkcg *blkcg = blkg->blkcg; + + spin_lock(&blkcg->lock); if (blkg->pd[pol->plid]) { pol->pd_free_fn(blkg->pd[pol->plid]); blkg->pd[pol->plid] = NULL; } + spin_unlock(&blkcg->lock); } spin_unlock_irq(q->queue_lock); ret = -ENOMEM; @@ -1568,12 +1572,16 @@ void blkcg_deactivate_policy(struct request_queue *q, __clear_bit(pol->plid, q->blkcg_pols); list_for_each_entry(blkg, &q->blkg_list, q_node) { + struct blkcg *blkcg = blkg->blkcg; + + spin_lock(&blkcg->lock); if (blkg->pd[pol->plid]) { if (pol->pd_offline_fn) pol->pd_offline_fn(blkg->pd[pol->plid]); pol->pd_free_fn(blkg->pd[pol->plid]); blkg->pd[pol->plid] = NULL; } + spin_unlock(&blkcg->lock); } spin_unlock_irq(q->queue_lock); -- 2.25.1

1 0

[PATCH openEuler-1.0-LTS 1/6] Revert "sched/membarrier: fix NULL poiner in membarrier_global_expedited"
by Yang Yingliang 17 Sep '21

17 Sep '21

From: Li Hua <hucool.lihua(a)huawei.com> hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I3UKOW CVE: NA ------------------------------------------------- This reverts commit 3eb3533c1cb849559fc5a01410e7c863624b2ae5. Remove the work aroud to fix NULL poiner in membarrier_global_expedited, so as to prepare to introduce formal bug fix solution. Signed-off-by: Li Hua <hucool.lihua(a)huawei.com> Signed-off-by: Zheng Zucheng <zhengzucheng(a)huawei.com> Reviewed-by: Cheng Jian <cj.chengjian(a)huawei.com> Reviewed-by: Xie XiuQi <xiexiuqi(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- kernel/sched/membarrier.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/membarrier.c b/kernel/sched/membarrier.c index ea888ddb914f6..c4ea07e857985 100644 --- a/kernel/sched/membarrier.c +++ b/kernel/sched/membarrier.c @@ -115,7 +115,7 @@ static int membarrier_global_expedited(void) * scheduling a kthread. */ p = task_rcu_dereference(&cpu_rq(cpu)->curr); - if (p && p->flags & PF_KTHREAD) + if (p->flags & PF_KTHREAD) continue; __cpumask_set_cpu(cpu, tmpmask); -- 2.25.1

1 5

[PATCH kernel-4.19] ext4: update last_pos for the case ext4_htree_fill_tree return fail
by Yang Yingliang 17 Sep '21

17 Sep '21

From: yangerkun <yangerkun(a)huawei.com> hulk inclusion category: bugfix bugzilla: 181452, https://gitee.com/openeuler/kernel/issues/I4AI46 CVE: NA --------------------------- Or the ls for ext4 dir can run into a deadloop since info->last_pos != ctx->pos which will reset the world and start read the entry which has already got before. Details see below: 1. a dx_dir which has 3 block, block 0 as dx_root block, block 1/2 as leaf block which own the ext4_dir_entry_2 2. block 1 read ok and call_filldir which will fill the dirent and update the ctx->pos 3. block 2 read fail, but we has already fill some dirent, so we will return back to userspace will a positive return val(see ksys_getdents64) 4. the second ext4_dx_readdir will reset the world since info->last_pos != ctx->pos, and will also init the curr_hash which pos to block 1 5. So we will read block1 too, and once block2 still read fail, we can only fill one dirent because the hash of the entry in block1(besides the last one) won't greater than curr_hash 6. this time, we forget update last_pos too since the read for block2 will fail, and since we has got the one entry, ksys_getdents64 can return success 7. Latter we will trapped in a loop with step 4~6 Fix it by update last_pos too once ext4_htree_fill_tree return fail. Signed-off-by: yangerkun <yangerkun(a)huawei.com> Reviewed-by: Zhang Yi <yi.zhang(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- fs/ext4/dir.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c index ae520a7263395..aed33af7551ee 100644 --- a/fs/ext4/dir.c +++ b/fs/ext4/dir.c @@ -535,7 +535,7 @@ static int ext4_dx_readdir(struct file *file, struct dir_context *ctx) struct dir_private_info *info = file->private_data; struct inode *inode = file_inode(file); struct fname *fname; - int ret; + int ret = 0; if (!info) { info = ext4_htree_create_dir_info(file, ctx->pos); @@ -583,7 +583,7 @@ static int ext4_dx_readdir(struct file *file, struct dir_context *ctx) info->curr_minor_hash, &info->next_hash); if (ret < 0) - return ret; + goto finished; if (ret == 0) { ctx->pos = ext4_get_htree_eof(file); break; @@ -614,7 +614,7 @@ static int ext4_dx_readdir(struct file *file, struct dir_context *ctx) } finished: info->last_pos = ctx->pos; - return 0; + return ret < 0 ? ret : 0; } static int ext4_dir_open(struct inode * inode, struct file * filp) -- 2.25.1

1 0

Re: [PATCH openEuler-1.0-LTS] net:fix tcp timeout retransmits are always missing 2 times
by Xie XiuQi 17 Sep '21

17 Sep '21

Hi zhenyuan, Thanks for your patch. Please subscribe the kernel(a)openeuler.org mailing list first, and then resend this patch again, or your patch would be blocked. Others could not receive this email. Click this link for subscribe mailing list: https://openeuler.org/zh/community/mailing-list/ On 2021/9/17 11:40, jiazhenyuan wrote: > mainline inclusion > from mainline-v5.3.0 > commit 3256a2d6ab1f71f9a1bd2d7f6f18eb8108c48d17 > category: bugfix > bugzilla: https://gitee.com/openeuler/kernel/issues/I4AFRJ?from=project-issue > CVE: NA > > --------------------------------------------------------------- > > tcp: adjust rto_base in retransmits_timed_out() > The cited commit exposed an old retransmits_timed_out() bug > which assumed it could call tcp_model_timeout() with > TCP_RTO_MIN as rto_base for all states. > > But flows in SYN_SENT or SYN_RECV state uses a different > RTO base (1 sec instead of 200 ms, unless BPF choses > another value) > > This caused a reduction of SYN retransmits from 6 to 4 with > the default /proc/sys/net/ipv4/tcp_syn_retries value. > > Fixes: a41e8a8 ("tcp: better handle TCP_USER_TIMEOUT in SYN_SENT state") > Signed-off-by: Eric Dumazet <edumazet(a)google.com> > Cc: Yuchung Cheng <ycheng(a)google.com> > Cc: Marek Majkowski <marek(a)cloudflare.com> > Signed-off-by: David S. Miller <davem(a)davemloft.net> > > Signed-off-by: jiazhenyuan <jiazhenyuan(a)uniontech.com> > --- > net/ipv4/tcp_timer.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c > index 681882a40968..81a47e87c35d 100644 > --- a/net/ipv4/tcp_timer.c > +++ b/net/ipv4/tcp_timer.c > @@ -190,7 +190,7 @@ static bool retransmits_timed_out(struct sock *sk, > unsigned int boundary, > unsigned int timeout) > { > - const unsigned int rto_base = TCP_RTO_MIN; > + unsigned int rto_base = TCP_RTO_MIN; > unsigned int linear_backoff_thresh, start_ts; > > if (!inet_csk(sk)->icsk_retransmits) > @@ -201,6 +201,9 @@ static bool retransmits_timed_out(struct sock *sk, > return false; > > if (likely(timeout == 0)) { > + if ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV)) > + rto_base = tcp_timeout_init(sk); > + > linear_backoff_thresh = ilog2(TCP_RTO_MAX/rto_base); > > if (boundary <= linear_backoff_thresh) >

1 0

Re: [PATCH] arm64: smp: Fix cpu_freq print for NMI watchdog
by Xie XiuQi 17 Sep '21

17 Sep '21

Hi Wenchao, Thanks for your patch. Please subscribe the kernel(a)openeuler.org mailing list first, and then resend this patch again, or your patch would be blocked. Others who in the mailing list could not receive the emails. Click this link for subscribe mailing list: https://openeuler.org/zh/community/mailing-list/ On 2021/9/17 17:16, Wenchao Qin wrote: > hulk inclusion > category: bugfix > bugzilla: N/A > CVE: N/A > > ------------------------------ > > When we are in the arch_get_cpu_freq func for the first time, > after arch_probe_cpu_freq is excuted, the return of smp_processor_id() > will change due to preemption while cpu_freq get the freq belong to > original processor id, so pr_info will print the freq with wrong > processor id like below table from dmesg: > > [ 1.713211] NMI watchdog: CPU1 freq probed as 2189072384 HZ. > [ 1.810819] NMI watchdog: CPU1 freq probed as 2192003108 HZ. > [ 1.909910] NMI watchdog: CPU2 freq probed as 2191345967 HZ. > [ 2.015327] NMI watchdog: CPU3 freq probed as 2189460398 HZ. > > Actually, the first line should print the freq of CPU0, this bu > can occur in virtual machine with less then 17 vCPUs. > > Changing smp_processor_id() to cpu will fix the bug > > Signed-off-by: Wenchao Qin <qinwenchao(a)cmss.chinamobile.com> > --- > arch/arm64/kernel/smp.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c > index fe56277..d685a27 100644 > --- a/arch/arm64/kernel/smp.c > +++ b/arch/arm64/kernel/smp.c > @@ -1457,7 +1457,7 @@ static u64 arch_get_cpu_freq(void) > if (!cpu_freq) { > cpu_freq = arch_probe_cpu_freq(); > pr_info("NMI watchdog: CPU%u freq probed as %llu HZ.\n", > - smp_processor_id(), cpu_freq); > + cpu, cpu_freq); arch_probe_cpu_freq() 一样也会调用 smp_processor_id()，也可能存在被抢占的情况。是不是需要关抢占？ > if (!cpu_freq) > cpu_freq = -1; > per_cpu(cpu_freq_probed, cpu) = cpu_freq; >

1 0

[PATCH kernel-4.19] blk-throttle: fix UAF by deleteing timer in blk_throtl_exit()
by Yang Yingliang 16 Sep '21

16 Sep '21

From: Li Jinlin <lijinlin3(a)huawei.com> mainline inclusion from mainline-5.14 commit 884f0e84f1e3195b801319c8ec3d5774e9bf2710 category: bugfix bugzilla: NA CVE: NA The pending timer has been set up in blk_throtl_init(). However, the timer is not deleted in blk_throtl_exit(). This means that the timer handler may still be running after freeing the timer, which would result in a use-after-free. Fix by calling del_timer_sync() to delete the timer in blk_throtl_exit(). Signed-off-by: Li Jinlin <lijinlin3(a)huawei.com> Link: https://lore.kernel.org/r/20210907121242.2885564-1-lijinlin3@huawei.com Signed-off-by: Jens Axboe <axboe(a)kernel.dk> Signed-off-by: Laibin Qiu <qiulaibin(a)huawei.com> Reviewed-by: Jason Yan <yanaijie(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- block/blk-throttle.c | 1 + 1 file changed, 1 insertion(+) diff --git a/block/blk-throttle.c b/block/blk-throttle.c index 9426330d99dda..2c6df348faf5f 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -2482,6 +2482,7 @@ int blk_throtl_init(struct request_queue *q) void blk_throtl_exit(struct request_queue *q) { BUG_ON(!q->td); + del_timer_sync(&q->td->service_queue.pending_timer); throtl_shutdown_wq(q); blkcg_deactivate_policy(q, &blkcg_policy_throtl); free_percpu(q->td->latency_buckets[READ]); -- 2.25.1

1 0

[PATCH openEuler-1.0-LTS] fix hibmc did not get edid
by Gou Hao 16 Sep '21

16 Sep '21

From: gouhao <gouhao(a)uniontech.com> uniontech inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I469VQ CVE: NA ---------------------------------------------------------- fix hibmc did not get edid. backport from openEuler master branch: 4eb4d99dfe: drm/hisilicon: Support i2c driver algorithms for bit-shift a0d078d06e: drm/hisilicon: Features to support reading resolutions from EDID. Modified the a0d078d06e original patch. add include/drm/drm_probe_helper.h add drm_connector_init_with_ddc interface in /drivers/gpu/drm/drm_connector.c Signed-off-by: Daniel Vetter <daniel.vetter(a)ffwll.ch> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p(a)collabora.com> Signed-off-by: Tian Tao <tiantao6(a)hisilicon.com> Signed-off-by: Gou Hao <gouhao(a)uniontech.com> --- drivers/gpu/drm/drm_connector.c | 35 +++++++ drivers/gpu/drm/hisilicon/hibmc/Makefile | 3 +- .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h | 27 +++++ .../gpu/drm/hisilicon/hibmc/hibmc_drm_i2c.c | 99 +++++++++++++++++++ .../gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c | 59 ++++++++--- include/drm/drm_connector.h | 17 ++++ include/drm/drm_probe_helper.h | 27 +++++ 7 files changed, 250 insertions(+), 17 deletions(-) create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_i2c.c create mode 100644 include/drm/drm_probe_helper.h diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 6011d769d..ed49d0e93 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -290,6 +290,41 @@ out_put: } EXPORT_SYMBOL(drm_connector_init); +/** + * drm_connector_init_with_ddc - Init a preallocated connector + * @dev: DRM device + * @connector: the connector to init + * @funcs: callbacks for this connector + * @connector_type: user visible type of the connector + * @ddc: pointer to the associated ddc adapter + * + * Initialises a preallocated connector. Connectors should be + * subclassed as part of driver connector objects. + * + * Ensures that the ddc field of the connector is correctly set. + * + * Returns: + * Zero on success, error code on failure. + */ +int drm_connector_init_with_ddc(struct drm_device *dev, + struct drm_connector *connector, + const struct drm_connector_funcs *funcs, + int connector_type, + struct i2c_adapter *ddc) +{ + int ret; + + ret = drm_connector_init(dev, connector, funcs, connector_type); + if (ret) + return ret; + + /* provide ddc symlink in sysfs */ + connector->ddc = ddc; + + return ret; +} +EXPORT_SYMBOL(drm_connector_init_with_ddc); + /** * drm_connector_attach_encoder - attach a connector to an encoder * @connector: connector to attach diff --git a/drivers/gpu/drm/hisilicon/hibmc/Makefile b/drivers/gpu/drm/hisilicon/hibmc/Makefile index 3df726696..14c1ca9c9 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/Makefile +++ b/drivers/gpu/drm/hisilicon/hibmc/Makefile @@ -1,3 +1,4 @@ -hibmc-drm-y := hibmc_drm_drv.o hibmc_drm_de.o hibmc_drm_vdac.o hibmc_drm_fbdev.o hibmc_ttm.o +hibmc-drm-y := hibmc_drm_drv.o hibmc_drm_de.o hibmc_drm_vdac.o \ + hibmc_drm_fbdev.o hibmc_ttm.o hibmc_drm_i2c.o obj-$(CONFIG_DRM_HISI_HIBMC) += hibmc-drm.o diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h index 4395dc667..2b42864ba 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h @@ -19,12 +19,24 @@ #ifndef HIBMC_DRM_DRV_H #define HIBMC_DRM_DRV_H +#include <linux/gpio/consumer.h> +#include <linux/i2c-algo-bit.h> +#include <linux/i2c.h> + +#include <drm/drm_edid.h> #include <drm/drmP.h> #include <drm/drm_atomic.h> #include <drm/drm_fb_helper.h> #include <drm/drm_gem.h> #include <drm/ttm/ttm_bo_driver.h> +struct hibmc_connector { + struct drm_connector base; + + struct i2c_adapter adapter; + struct i2c_algo_bit_data bit_data; +}; + struct hibmc_framebuffer { struct drm_framebuffer fb; struct drm_gem_object *obj; @@ -43,6 +55,8 @@ struct hibmc_drm_private { unsigned long fb_base; unsigned long fb_size; bool msi_enabled; + struct drm_encoder encoder; + struct hibmc_connector connector; /* drm */ struct drm_device *dev; @@ -60,6 +74,17 @@ struct hibmc_drm_private { bool mm_inited; }; +static inline struct hibmc_connector *to_hibmc_connector(struct drm_connector *connector) +{ + return container_of(connector, struct hibmc_connector, base); +} + +static inline struct hibmc_drm_private *to_hibmc_drm_private(struct drm_device *dev) +{ + return dev->dev_private; +} + + #define to_hibmc_framebuffer(x) container_of(x, struct hibmc_framebuffer, fb) struct hibmc_bo { @@ -111,6 +136,8 @@ int hibmc_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev, u32 handle, u64 *offset); int hibmc_mmap(struct file *filp, struct vm_area_struct *vma); +int hibmc_ddc_create(struct drm_device *drm_dev, struct hibmc_connector *connector); + extern const struct drm_mode_config_funcs hibmc_mode_funcs; #endif diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_i2c.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_i2c.c new file mode 100644 index 000000000..86d712090 --- /dev/null +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_i2c.c @@ -0,0 +1,99 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* Hisilicon Hibmc SoC drm driver + * + * Based on the bochs drm driver. + * + * Copyright (c) 2016 Huawei Limited. + * + * Author: + * Tian Tao <tiantao6(a)hisilicon.com> + */ + +#include <linux/delay.h> +#include <linux/pci.h> + +#include <drm/drm_atomic_helper.h> +#include <drm/drm_probe_helper.h> + +#include "hibmc_drm_drv.h" + +#define GPIO_DATA 0x0802A0 +#define GPIO_DATA_DIRECTION 0x0802A4 + +#define I2C_SCL_MASK BIT(0) +#define I2C_SDA_MASK BIT(1) + +static void hibmc_set_i2c_signal(void *data, u32 mask, int value) +{ + struct hibmc_connector *hibmc_connector = data; + struct hibmc_drm_private *priv = to_hibmc_drm_private(hibmc_connector->base.dev); + u32 tmp_dir = readl(priv->mmio + GPIO_DATA_DIRECTION); + + if (value) { + tmp_dir &= ~mask; + writel(tmp_dir, priv->mmio + GPIO_DATA_DIRECTION); + } else { + u32 tmp_data = readl(priv->mmio + GPIO_DATA); + + tmp_data &= ~mask; + writel(tmp_data, priv->mmio + GPIO_DATA); + + tmp_dir |= mask; + writel(tmp_dir, priv->mmio + GPIO_DATA_DIRECTION); + } +} + +static int hibmc_get_i2c_signal(void *data, u32 mask) +{ + struct hibmc_connector *hibmc_connector = data; + struct hibmc_drm_private *priv = to_hibmc_drm_private(hibmc_connector->base.dev); + u32 tmp_dir = readl(priv->mmio + GPIO_DATA_DIRECTION); + + if ((tmp_dir & mask) != mask) { + tmp_dir &= ~mask; + writel(tmp_dir, priv->mmio + GPIO_DATA_DIRECTION); + } + + return (readl(priv->mmio + GPIO_DATA) & mask) ? 1 : 0; +} + +static void hibmc_ddc_setsda(void *data, int state) +{ + hibmc_set_i2c_signal(data, I2C_SDA_MASK, state); +} + +static void hibmc_ddc_setscl(void *data, int state) +{ + hibmc_set_i2c_signal(data, I2C_SCL_MASK, state); +} + +static int hibmc_ddc_getsda(void *data) +{ + return hibmc_get_i2c_signal(data, I2C_SDA_MASK); +} + +static int hibmc_ddc_getscl(void *data) +{ + return hibmc_get_i2c_signal(data, I2C_SCL_MASK); +} + +int hibmc_ddc_create(struct drm_device *drm_dev, + struct hibmc_connector *connector) +{ + connector->adapter.owner = THIS_MODULE; + connector->adapter.class = I2C_CLASS_DDC; + snprintf(connector->adapter.name, I2C_NAME_SIZE, "HIS i2c bit bus"); + connector->adapter.dev.parent = &drm_dev->pdev->dev; + i2c_set_adapdata(&connector->adapter, connector); + connector->adapter.algo_data = &connector->bit_data; + + connector->bit_data.udelay = 20; + connector->bit_data.timeout = usecs_to_jiffies(2000); + connector->bit_data.data = connector; + connector->bit_data.setsda = hibmc_ddc_setsda; + connector->bit_data.setscl = hibmc_ddc_setscl; + connector->bit_data.getsda = hibmc_ddc_getsda; + connector->bit_data.getscl = hibmc_ddc_getscl; + + return i2c_bit_add_bus(&connector->adapter); +} diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c index 90319a902..3f176d500 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c @@ -59,11 +59,24 @@ static int hibmc_valid_mode(int w, int h) static int hibmc_connector_get_modes(struct drm_connector *connector) { int count; + void *edid; + struct hibmc_connector *hibmc_connector = to_hibmc_connector(connector); + + edid = drm_get_edid(connector, &hibmc_connector->adapter); + if (edid) { + drm_connector_update_edid_property(connector, edid); + count = drm_add_edid_modes(connector, edid); + if (count) + goto out; + } - drm_connector_update_edid_property(connector, NULL); - count = drm_add_modes_noedid(connector, 1920, 1200); + count = drm_add_modes_noedid(connector, + connector->dev->mode_config.max_width, + connector->dev->mode_config.max_height); drm_set_preferred_mode(connector, 1024, 768); +out: + kfree(edid); return count; } @@ -86,6 +99,14 @@ hibmc_connector_best_encoder(struct drm_connector *connector) return drm_encoder_find(connector->dev, NULL, connector->encoder_ids[0]); } +static void hibmc_connector_destroy(struct drm_connector *connector) +{ + struct hibmc_connector *hibmc_connector = to_hibmc_connector(connector); + + i2c_del_adapter(&hibmc_connector->adapter); + drm_connector_cleanup(connector); +} + static const struct drm_connector_helper_funcs hibmc_connector_helper_funcs = { .get_modes = hibmc_connector_get_modes, @@ -95,7 +116,7 @@ static const struct drm_connector_helper_funcs static const struct drm_connector_funcs hibmc_connector_funcs = { .fill_modes = drm_helper_probe_single_connector_modes, - .destroy = drm_connector_cleanup, + .destroy = hibmc_connector_destroy, .reset = drm_atomic_helper_connector_reset, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, @@ -155,21 +176,15 @@ static const struct drm_encoder_funcs hibmc_encoder_funcs = { int hibmc_vdac_init(struct hibmc_drm_private *priv) { struct drm_device *dev = priv->dev; - struct drm_encoder *encoder; - struct drm_connector *connector; + struct hibmc_connector *hibmc_connector = &priv->connector; + struct drm_encoder *encoder = &priv->encoder; + struct drm_connector *connector = &hibmc_connector->base; int ret; - connector = hibmc_connector_init(priv); - if (IS_ERR(connector)) { - DRM_ERROR("failed to create connector: %ld\n", - PTR_ERR(connector)); - return PTR_ERR(connector); - } - - encoder = devm_kzalloc(dev->dev, sizeof(*encoder), GFP_KERNEL); - if (!encoder) { - DRM_ERROR("failed to alloc memory when init encoder\n"); - return -ENOMEM; + ret = hibmc_ddc_create(dev, hibmc_connector); + if (ret) { + DRM_ERROR("failed to create ddc: %d\n", ret); + return ret; } encoder->possible_crtcs = 0x1; @@ -181,6 +196,18 @@ int hibmc_vdac_init(struct hibmc_drm_private *priv) } drm_encoder_helper_add(encoder, &hibmc_encoder_helper_funcs); + + ret = drm_connector_init_with_ddc(dev, connector, + &hibmc_connector_funcs, + DRM_MODE_CONNECTOR_VGA, + &hibmc_connector->adapter); + if (ret) { + DRM_ERROR("failed to init connector: %d\n", ret); + return ret; + } + + drm_connector_helper_add(connector, &hibmc_connector_helper_funcs); + drm_connector_attach_encoder(connector, encoder); return 0; diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 97ea41dc6..b9efb4564 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -998,6 +998,18 @@ struct drm_connector { * [0]: progressive, [1]: interlaced */ int audio_latency[2]; + + /** + * @ddc: associated ddc adapter. + * A connector usually has its associated ddc adapter. If a driver uses + * this field, then an appropriate symbolic link is created in connector + * sysfs directory to make it easy for the user to tell which i2c + * adapter is for a particular display. + * + * The field should be set by calling drm_connector_init_with_ddc(). + */ + struct i2c_adapter *ddc; + /** * @null_edid_counter: track sinks that give us all zeros for the EDID. * Needed to workaround some HW bugs where we get all 0s @@ -1083,6 +1095,11 @@ int drm_connector_init(struct drm_device *dev, struct drm_connector *connector, const struct drm_connector_funcs *funcs, int connector_type); +int drm_connector_init_with_ddc(struct drm_device *dev, + struct drm_connector *connector, + const struct drm_connector_funcs *funcs, + int connector_type, + struct i2c_adapter *ddc); int drm_connector_register(struct drm_connector *connector); void drm_connector_unregister(struct drm_connector *connector); int drm_connector_attach_encoder(struct drm_connector *connector, diff --git a/include/drm/drm_probe_helper.h b/include/drm/drm_probe_helper.h new file mode 100644 index 000000000..8d3ed2834 --- /dev/null +++ b/include/drm/drm_probe_helper.h @@ -0,0 +1,27 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT + +#ifndef __DRM_PROBE_HELPER_H__ +#define __DRM_PROBE_HELPER_H__ + +#include <linux/types.h> + +struct drm_connector; +struct drm_device; +struct drm_modeset_acquire_ctx; + +int drm_helper_probe_single_connector_modes(struct drm_connector + *connector, uint32_t maxX, + uint32_t maxY); +int drm_helper_probe_detect(struct drm_connector *connector, + struct drm_modeset_acquire_ctx *ctx, + bool force); +void drm_kms_helper_poll_init(struct drm_device *dev); +void drm_kms_helper_poll_fini(struct drm_device *dev); +bool drm_helper_hpd_irq_event(struct drm_device *dev); +void drm_kms_helper_hotplug_event(struct drm_device *dev); + +void drm_kms_helper_poll_disable(struct drm_device *dev); +void drm_kms_helper_poll_enable(struct drm_device *dev); +bool drm_kms_helper_is_poll_worker(void); + +#endif -- 2.20.1

2 1

【Meeting Notice】openEuler kernel 技术分享第十二期 & 双周例会 Time: 2021-09-17 14:00-17:00
by Meeting Book 16 Sep '21

16 Sep '21

1 0

[PATCH kernel-4.19] nvme-rdma: don't update queue count when failing to set io queues
by Yang Yingliang 16 Sep '21

16 Sep '21

From: Ruozhu Li <liruozhu(a)huawei.com> mainline inclusion from mainline-v5.15 commit 85032874f80ba17bf187de1d14d9603bf3f582b8 category: bugfix bugzilla: NA CVE: NA Link: https://gitee.com/openeuler/kernel/issues/I1WGZE This patch fix a BUG_ON when rescan ns after set queue count cmd timeout: BUG_ON(hctx_idx >= ctrl->ctrl.queue_count); //in nvme_rdma_init_hctx Call trace: nvme_rdma_init_hctx+0x58/0x60 [nvme_rdma] blk_mq_realloc_hw_ctxs+0x140/0x4c0 blk_mq_init_allocated_queue+0x130/0x410 blk_mq_init_queue+0x40/0x88 nvme_validate_ns+0xb8/0x740 nvme_scan_work+0x29c/0x460 process_one_work+0x1f8/0x490 worker_thread+0x50/0x4b8 kthread+0x134/0x138 ret_from_fork+0x10/0x18 ------------------------------------------------- We update ctrl->queue_count and schedule another reconnect when io queue count is zero.But we will never try to create any io queue in next reco- nnection, because ctrl->queue_count already set to zero.We will end up having an admin-only session in Live state, which is exactly what we try to avoid in the original patch. Update ctrl->queue_count after queue_count zero checking to fix it. Signed-off-by: Ruozhu Li <liruozhu(a)huawei.com> Reviewed-by: Sagi Grimberg <sagi(a)grimberg.me> Signed-off-by: Christoph Hellwig <hch(a)lst.de> Tested-by: Ruozhu Li <liruozhu(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- drivers/nvme/host/rdma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index 91ff9262f6729..b8e0d637ddcfc 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -656,13 +656,13 @@ static int nvme_rdma_alloc_io_queues(struct nvme_rdma_ctrl *ctrl) if (ret) return ret; - ctrl->ctrl.queue_count = nr_io_queues + 1; - if (ctrl->ctrl.queue_count < 2) { + if (nr_io_queues == 0) { dev_err(ctrl->ctrl.device, "unable to set any I/O queues\n"); return -ENOMEM; } + ctrl->ctrl.queue_count = nr_io_queues + 1; dev_info(ctrl->ctrl.device, "creating %d I/O queues.\n", nr_io_queues); -- 2.25.1

1 0

[PATCH kernel-4.19 1/5] Revert "sched/membarrier: fix NULL poiner in membarrier_global_expedited"
by Yang Yingliang 16 Sep '21

16 Sep '21

From: Li Hua <hucool.lihua(a)huawei.com> hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I3UKOW CVE: NA ------------------------------------------------- This reverts commit 3eb3533c1cb849559fc5a01410e7c863624b2ae5. Remove the work aroud to fix NULL poiner in membarrier_global_expedited, so as to prepare to introduce formal bug fix solution. Signed-off-by: Li Hua <hucool.lihua(a)huawei.com> Signed-off-by: Zheng Zucheng <zhengzucheng(a)huawei.com> Reviewed-by: Xie XiuQi <xiexiuqi(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- kernel/sched/membarrier.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/membarrier.c b/kernel/sched/membarrier.c index ea888ddb914f6..c4ea07e857985 100644 --- a/kernel/sched/membarrier.c +++ b/kernel/sched/membarrier.c @@ -115,7 +115,7 @@ static int membarrier_global_expedited(void) * scheduling a kthread. */ p = task_rcu_dereference(&cpu_rq(cpu)->curr); - if (p && p->flags & PF_KTHREAD) + if (p->flags & PF_KTHREAD) continue; __cpumask_set_cpu(cpu, tmpmask); -- 2.25.1

1 4

[PATCH kernel-4.19 openEuler-1.0-LTS 00/30] psi support for 4.19
by Cheng Jian 16 Sep '21

16 Sep '21

psi support for 4.19 Liu Xinpeng (30): delayacct: track delays from thrashing cache pages sched: loadavg: consolidate LOAD_INT, LOAD_FRAC, CALC_LOAD sched: loadavg: make calc_load_n() public sched: sched.h: make rq locking and clock functions available in stats.h sched: introduce this_rq_lock_irq() psi: pressure stall information for CPU, memory, and IO psi: cgroup support kernel/sched/psi.c: simplify cgroup_move_task() psi: make disabling/enabling easier for vendor kernels psi: fix aggregation idle shut-off psi: avoid divide-by-zero crash inside virtual machines fs: kernfs: add poll file operation kernel: cgroup: add poll file operation psi: introduce state_mask to represent stalled psi states psi: make psi_enable static psi: rename psi fields in preparation for psi trigger addition psi: split update_stats into parts psi: track changed states include/: refactor headers to allow kthread.h inclusion in psi_types.h psi: introduce psi monitor kernel/sched/psi.c: expose pressure metrics on root cgroup sched/psi: Reduce psimon FIFO priority sched/psi: Do not require setsched permission from the psi: get poll_work to run when calling poll syscall next time sched/psi: Correct overly pessimistic size calculation sched/psi: Fix sampling error and rare div0 crashes with cgroups and high uptime psi: Fix a division error in psi poll() sched/psi: Fix OOB write when writing 0 bytes to PSI files psi:enable psi in config avoid kabi change for psi merged feature Documentation/accounting/psi.txt | 180 +++ Documentation/admin-guide/cgroup-v2.rst | 18 + .../admin-guide/kernel-parameters.txt | 4 + arch/arm64/configs/openeuler_defconfig | 2 + .../platforms/cell/cpufreq_spudemand.c | 2 +- arch/powerpc/platforms/cell/spufs/sched.c | 9 +- arch/s390/appldata/appldata_os.c | 4 - arch/x86/configs/openeuler_defconfig | 2 + block/blk-iolatency.c | 8 +- drivers/cpuidle/governors/menu.c | 4 - drivers/spi/spi-rockchip.c | 1 + fs/kernfs/file.c | 31 +- fs/proc/loadavg.c | 3 - include/linux/cgroup-defs.h | 12 + include/linux/cgroup.h | 15 + include/linux/delayacct.h | 27 + include/linux/kernfs.h | 8 + include/linux/kthread.h | 4 + include/linux/psi.h | 65 + include/linux/psi_types.h | 173 +++ include/linux/sched.h | 9 + include/linux/sched/loadavg.h | 24 +- include/uapi/linux/taskstats.h | 8 +- init/Kconfig | 28 + kernel/cgroup/cgroup.c | 129 +- kernel/debug/kdb/kdb_main.c | 7 +- kernel/delayacct.c | 15 + kernel/fork.c | 4 + kernel/kthread.c | 3 + kernel/sched/Makefile | 1 + kernel/sched/core.c | 16 +- kernel/sched/loadavg.c | 139 +- kernel/sched/psi.c | 1292 +++++++++++++++++ kernel/sched/sched.h | 178 +-- kernel/sched/stats.h | 86 ++ kernel/workqueue.c | 23 + kernel/workqueue_internal.h | 6 +- mm/compaction.c | 5 + mm/filemap.c | 20 + mm/page_alloc.c | 9 + mm/vmscan.c | 9 + tools/accounting/getdelays.c | 8 +- 42 files changed, 2380 insertions(+), 211 deletions(-) create mode 100644 Documentation/accounting/psi.txt create mode 100644 include/linux/psi.h create mode 100644 include/linux/psi_types.h create mode 100644 kernel/sched/psi.c -- 2.25.1

1 17

[PATCH kernel-4.19 1/2] scsi: hisi_sas: use threaded irq to process CQ interrupts
by Yang Yingliang 15 Sep '21

15 Sep '21

From: Yang Xingui <yangxingui(a)huawei.com> mainline inclusion from mainline-v5.10-rc4 commit 81f338e9709d category: bugfix bugzilla: NA CVE: NA Currently IRQ_EFFECTIVE_AFF_MASK is enabled for ARM_GIC and ARM_GIC3, so it only allows a single target CPU in the affinity mask to process interrupts and also interrupt thread, and the performance of using threaded irq is almost the same as tasklet. But if the config is not enabled, the interrupt thread will be allowed all the CPUs in the affinity mask. At that situation it improves the performance (about 20%). Note: IRQ_EFFECTIVE_AFF_MASK is configured differently for different architecture chip, and it seems to be better to make it be configured easily. Link: https://lore.kernel.org/r/1579522957-4393-2-git-send-email-john.garry@huawe… Signed-off-by: Xiang Chen <chenxiang66(a)hisilicon.com> Signed-off-by: John Garry <john.garry(a)huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Yang Xingui <yangxingui(a)huawei.com> Reviewed-by: kangfenglong <kangfenglong(a)huawei.com> Reviewed-by: ouyangdelong < ouyangdelong(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- drivers/scsi/hisi_sas/hisi_sas.h | 4 ++-- drivers/scsi/hisi_sas/hisi_sas_main.c | 22 +++++++++--------- drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 28 ++++++++-------------- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 32 ++++++++++++-------------- 4 files changed, 38 insertions(+), 48 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h index 80cd8870477b4..eae0e533ce7fc 100644 --- a/drivers/scsi/hisi_sas/hisi_sas.h +++ b/drivers/scsi/hisi_sas/hisi_sas.h @@ -173,9 +173,9 @@ struct hisi_sas_port { struct hisi_sas_cq { struct hisi_hba *hisi_hba; - struct tasklet_struct tasklet; int rd_point; int id; + int irq_no; }; struct hisi_sas_dq { @@ -591,7 +591,7 @@ extern void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, extern void hisi_sas_init_mem(struct hisi_hba *hisi_hba); extern void hisi_sas_rst_work_handler(struct work_struct *work); extern void hisi_sas_sync_rst_work_handler(struct work_struct *work); -extern void hisi_sas_kill_tasklets(struct hisi_hba *hisi_hba); +extern void hisi_sas_sync_irqs(struct hisi_hba *hisi_hba); extern bool hisi_sas_notify_phy_event(struct hisi_sas_phy *phy, enum hisi_sas_phy_event event); extern void hisi_sas_release_tasks(struct hisi_hba *hisi_hba); diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 902893dfaacc2..6138e5240c347 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -1248,10 +1248,10 @@ static int hisi_sas_exec_internal_tmf_task(struct domain_device *device, struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue]; /* - * flush tasklet to avoid free'ing task + * sync irq to avoid free'ing task * before using task in IO completion */ - tasklet_kill(&cq->tasklet); + synchronize_irq(cq->irq_no); slot->task = NULL; } @@ -1660,11 +1660,11 @@ static int hisi_sas_abort_task(struct sas_task *task) if (slot) { /* - * flush tasklet to avoid free'ing task + * sync irq to avoid free'ing task * before using task in IO completion */ cq = &hisi_hba->cq[slot->dlvry_queue]; - tasklet_kill(&cq->tasklet); + synchronize_irq(cq->irq_no); } spin_unlock_irqrestore(&task->task_state_lock, flags); rc = TMF_RESP_FUNC_COMPLETE; @@ -1727,10 +1727,10 @@ static int hisi_sas_abort_task(struct sas_task *task) if (((rc < 0) || (rc == TMF_RESP_FUNC_FAILED)) && task->lldd_task) { /* - * flush tasklet to avoid free'ing task + * sync irq to avoid free'ing task * before using task in IO completion */ - tasklet_kill(&cq->tasklet); + synchronize_irq(cq->irq_no); slot->task = NULL; } } @@ -2103,10 +2103,10 @@ _hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue]; /* - * flush tasklet to avoid free'ing task + * sync irq to avoid free'ing task * before using task in IO completion */ - tasklet_kill(&cq->tasklet); + synchronize_irq(cq->irq_no); slot->task = NULL; } dev_err(dev, "internal task abort: timeout and not done.\n"); @@ -2262,17 +2262,17 @@ void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy) } EXPORT_SYMBOL_GPL(hisi_sas_phy_down); -void hisi_sas_kill_tasklets(struct hisi_hba *hisi_hba) +void hisi_sas_sync_irqs(struct hisi_hba *hisi_hba) { int i; for (i = 0; i < hisi_hba->nvecs; i++) { struct hisi_sas_cq *cq = &hisi_hba->cq[i]; - tasklet_kill(&cq->tasklet); + synchronize_irq(cq->irq_no); } } -EXPORT_SYMBOL_GPL(hisi_sas_kill_tasklets); +EXPORT_SYMBOL_GPL(hisi_sas_sync_irqs); int hisi_sas_host_reset(struct Scsi_Host *shost, int reset_type) { diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c index 61ff065e5d9b8..fa4233454dccb 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c @@ -3148,9 +3148,9 @@ static irqreturn_t fatal_axi_int_v2_hw(int irq_no, void *p) return IRQ_HANDLED; } -static void cq_tasklet_v2_hw(unsigned long val) +static irqreturn_t cq_thread_v2_hw(int irq_no, void *p) { - struct hisi_sas_cq *cq = (struct hisi_sas_cq *)val; + struct hisi_sas_cq *cq = p; struct hisi_hba *hisi_hba = cq->hisi_hba; struct hisi_sas_slot *slot; struct hisi_sas_itct *itct; @@ -3212,6 +3212,8 @@ static void cq_tasklet_v2_hw(unsigned long val) /* update rd_point */ cq->rd_point = rd_point; hisi_sas_write32(hisi_hba, COMPL_Q_0_RD_PTR + (0x14 * queue), rd_point); + + return IRQ_HANDLED; } static irqreturn_t cq_interrupt_v2_hw(int irq_no, void *p) @@ -3222,9 +3224,7 @@ static irqreturn_t cq_interrupt_v2_hw(int irq_no, void *p) hisi_sas_write32(hisi_hba, OQ_INT_SRC, 1 << queue); - tasklet_schedule(&cq->tasklet); - - return IRQ_HANDLED; + return IRQ_WAKE_THREAD; } static irqreturn_t sata_int_v2_hw(int irq_no, void *p) @@ -3394,11 +3394,11 @@ static int interrupt_init_v2_hw(struct hisi_hba *hisi_hba) for (queue_no = 0; queue_no < hisi_hba->queue_count; queue_no++) { struct hisi_sas_cq *cq = &hisi_hba->cq[queue_no]; - struct tasklet_struct *t = &cq->tasklet; - - irq = irq_map[queue_no + 96]; - rc = devm_request_irq(dev, irq, cq_interrupt_v2_hw, 0, - DRV_NAME " cq", cq); + cq->irq_no = irq_map[queue_no + 96]; + rc = devm_request_threaded_irq(dev, cq->irq_no, + cq_interrupt_v2_hw, + cq_thread_v2_hw, IRQF_ONESHOT, + DRV_NAME " cq", cq); if (rc) { dev_err(dev, "irq init: could not request cq interrupt %d, rc=%d\n", @@ -3406,7 +3406,6 @@ static int interrupt_init_v2_hw(struct hisi_hba *hisi_hba) rc = -ENOENT; goto free_cq_int_irqs; } - tasklet_init(t, cq_tasklet_v2_hw, (unsigned long)cq); } hisi_hba->nvecs = hisi_hba->queue_count; @@ -3418,7 +3417,6 @@ static int interrupt_init_v2_hw(struct hisi_hba *hisi_hba) struct hisi_sas_cq *cq = &hisi_hba->cq[k]; free_irq(irq_map[k + 96], cq); - tasklet_kill(&cq->tasklet); } free_fatal_int_irqs: for (k = 0; k < fatal_no; k++) @@ -3487,7 +3485,6 @@ static int soft_reset_v2_hw(struct hisi_hba *hisi_hba) interrupt_disable_v2_hw(hisi_hba); hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0x0); - hisi_sas_kill_tasklets(hisi_hba); hisi_sas_stop_phys(hisi_hba); @@ -3660,11 +3657,6 @@ static int hisi_sas_v2_probe(struct platform_device *pdev) static int hisi_sas_v2_remove(struct platform_device *pdev) { - struct sas_ha_struct *sha = platform_get_drvdata(pdev); - struct hisi_hba *hisi_hba = sha->lldd_ha; - - hisi_sas_kill_tasklets(hisi_hba); - return hisi_sas_remove(pdev); } diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index b38aa8d0a2242..a9f53dbb91679 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -2506,9 +2506,9 @@ slot_complete_v3_hw(struct hisi_hba *hisi_hba, struct hisi_sas_slot *slot) return sts; } -static void cq_tasklet_v3_hw(unsigned long val) +static irqreturn_t cq_thread_v3_hw(int irq_no, void *p) { - struct hisi_sas_cq *cq = (struct hisi_sas_cq *)val; + struct hisi_sas_cq *cq = p; struct hisi_hba *hisi_hba = cq->hisi_hba; struct hisi_sas_slot *slot; struct hisi_sas_complete_v3_hdr *complete_queue; @@ -2545,6 +2545,8 @@ static void cq_tasklet_v3_hw(unsigned long val) hisi_sas_write32(hisi_hba, COMPL_Q_0_RD_PTR + (NEXT_DQCQ_REG_OFF * queue), rd_point); + + return IRQ_HANDLED; } static irqreturn_t cq_interrupt_v3_hw(int irq_no, void *p) @@ -2555,9 +2557,7 @@ static irqreturn_t cq_interrupt_v3_hw(int irq_no, void *p) hisi_sas_write32(hisi_hba, OQ_INT_SRC, 1 << queue); - tasklet_schedule(&cq->tasklet); - - return IRQ_HANDLED; + return IRQ_WAKE_THREAD; } static int interrupt_init_v3_hw(struct hisi_hba *hisi_hba) @@ -2626,17 +2626,19 @@ static int interrupt_init_v3_hw(struct hisi_hba *hisi_hba) goto free_chnl_interrupt; } - /* Init tasklets for cq only */ for (i = 0; i < hisi_hba->nvecs; i++) { struct hisi_sas_cq *cq = &hisi_hba->cq[i]; - struct tasklet_struct *t = &cq->tasklet; int nr = hisi_sas_intr_conv ? PCI_IRQ_CQ_BASE : PCI_IRQ_CQ_BASE + i; - unsigned long irqflags = hisi_sas_intr_conv ? IRQF_SHARED : 0; - - rc = devm_request_irq(dev, pci_irq_vector(pdev, nr), - cq_interrupt_v3_hw, irqflags, - DRV_NAME " cq", cq); + unsigned long irqflags = hisi_sas_intr_conv ? IRQF_SHARED : + IRQF_ONESHOT; + + cq->irq_no = pci_irq_vector(pdev, nr); + rc = devm_request_threaded_irq(dev, cq->irq_no, + cq_interrupt_v3_hw, + cq_thread_v3_hw, + irqflags, + DRV_NAME " cq", cq); if (rc) { dev_err(dev, "could not request cq%d interrupt, rc=%d\n", @@ -2644,8 +2646,6 @@ static int interrupt_init_v3_hw(struct hisi_hba *hisi_hba) rc = -ENOENT; goto free_cq_irqs; } - - tasklet_init(t, cq_tasklet_v3_hw, (uintptr_t)cq); } return 0; @@ -2768,7 +2768,6 @@ static int disable_host_v3_hw(struct hisi_hba *hisi_hba) interrupt_disable_v3_hw(hisi_hba); hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0x0); - hisi_sas_kill_tasklets(hisi_hba); hisi_sas_stop_phys(hisi_hba); @@ -3121,7 +3120,7 @@ static void debugfs_snapshot_prepare_v3_hw(struct hisi_hba *hisi_hba) if (wait_cmds_complete_timeout_v3_hw(hisi_hba, 100, 5000) == -ETIMEDOUT) dev_dbg(dev, "Wait commands complete timeout!\n"); - hisi_sas_kill_tasklets(hisi_hba); + hisi_sas_sync_irqs(hisi_hba); } static void debugfs_snapshot_restore_v3_hw(struct hisi_hba *hisi_hba) @@ -3509,7 +3508,6 @@ static void hisi_sas_v3_remove(struct pci_dev *pdev) sas_remove_host(sha->core.shost); hisi_sas_v3_destroy_irqs(pdev, hisi_hba); - hisi_sas_kill_tasklets(hisi_hba); pci_release_regions(pdev); pci_disable_device(pdev); hisi_sas_free(hisi_hba); -- 2.25.1

1 1

【Meeting Notice】openEuler kernel 技术分享第十二期 & 双周例会 Time: 2021-09-17 14:00-17:00
by Meeting Book 15 Sep '21

15 Sep '21

1 0

[PATCH kernel-4.19] ext4: fix race writing to an inline_data file while its xattrs are changing
by Yang Yingliang 14 Sep '21

14 Sep '21

From: Theodore Ts'o <tytso(a)mit.edu> mainline inclusion from mainline-5.14 commit 9e445093e523f3277081314c864f708fd4bd34aa category: bugfix bugzilla: 180850 CVE: NA ------------------------------------------------- The location of the system.data extended attribute can change whenever xattr_sem is not taken. So we need to recalculate the i_inline_off field since it mgiht have changed between ext4_write_begin() and ext4_write_end(). This means that caching i_inline_off is probably not helpful, so in the long run we should probably get rid of it and shrink the in-memory ext4 inode slightly, but let's fix the race the simple way for now. Cc: stable(a)kernel.org Fixes: f19d5870cbf72 ("ext4: add normal write support for inline data") Reported-by: syzbot+13146364637c7363a7de(a)syzkaller.appspotmail.com Signed-off-by: Theodore Ts'o <tytso(a)mit.edu> Signed-off-by: Baokun Li <libaokun1(a)huawei.com> Reviewed-by: Zhang Yi <yi.zhang(a)huawei.com> Reviewed-by: Xiu Jianfeng <xiujianfeng(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- fs/ext4/inline.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index 7eeed4d50deac..3e238a2840a3b 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -750,6 +750,12 @@ int ext4_write_inline_data_end(struct inode *inode, loff_t pos, unsigned len, ext4_write_lock_xattr(inode, &no_expand); BUG_ON(!ext4_has_inline_data(inode)); + /* + * ei->i_inline_off may have changed since ext4_write_begin() + * called ext4_try_to_write_inline_data() + */ + (void) ext4_find_inline_data_nolock(inode); + kaddr = kmap_atomic(page); ext4_write_inline_data(inode, &iloc, kaddr, pos, len); kunmap_atomic(kaddr); -- 2.25.1

1 0

[PATCH kernel-4.19] uce: pagecache reading scenario add shmem support
by Yang Yingliang 14 Sep '21

14 Sep '21

From: Tong Tiangen <tongtiangen(a)huawei.com> hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I44REB CVE: NA --------------------------- The call trace is as follows: __arch_copy_to_user+0x1bc/0x21c copy_page_to_iter+0xdc/0x328 shmem_file_read_iter+0x124/0x350 __vfs_read+0x11c/0x188 vfs_read+0x94/0x150 ksys_read+0x6c/0xd8 __arm64_sys_read+0x24/0x30 el0_svc_common+0x78/0x130 el0_svc_handler+0x38/0x78 el0_svc+0x8/0xc This patch add uce kernel recovery path support in shmem_file_read_iter(). Signed-off-by: Tong Tiangen <tongtiangen(a)huawei.com> Reviewed-by: Kefeng Wang <wangkefeng.wang(a)huawei.com> Reviewed-by: Xie XiuQi <xiexiuqi(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- mm/shmem.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/mm/shmem.c b/mm/shmem.c index 4522348cfc189..8d32d49a4d7ba 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2674,7 +2674,14 @@ static ssize_t shmem_file_read_iter(struct kiocb *iocb, struct iov_iter *to) * Ok, we have the page, and it's up-to-date, so * now we can copy it to user space... */ +#ifdef CONFIG_UCE_KERNEL_RECOVERY + if (is_pagecache_reading_kernel_recovery_enable()) + ret = copy_page_to_iter_generic_read(page, offset, nr, to); + else + ret = copy_page_to_iter(page, offset, nr, to); +#else ret = copy_page_to_iter(page, offset, nr, to); +#endif retval += ret; offset += ret; index += offset >> PAGE_SHIFT; -- 2.25.1

1 0

Re: 答复: [PATCH] 4.19: PTP_KVM support for arm/arm64
by Keqian Zhu 14 Sep '21

14 Sep '21

好的，那我们暂时把这个事情优先级调低。 On 2021/9/14 15:15, Chentao (Boby) wrote: > 我和品高黎思恒前段时间聊过，思恒反馈客户已无意愿在ARM上使用该特性，因此他们移植该特性到ARM上的意愿在降低 > > -----邮件原件----- > 发件人: zhukeqian > 发送时间: 2021年9月14日 15:11 > 收件人: lisiheng <justcaca(a)126.com> > 抄送: lisiheng(a)bingosoft.net; kernel(a)openeuler.org; Xiexiuqi <xiexiuqi(a)huawei.com>; chengjian (D) <cj.chengjian(a)huawei.com>; xingchaochao <xingchaochao(a)huawei.com>; Chentao (Boby) <boby.chen(a)huawei.com> > 主题: Re: [PATCH] 4.19: PTP_KVM support for arm/arm64 > > Hi Siheng, > > On 2021/6/1 13:41, lisiheng wrote: >> 感谢review！ >> 我重新回合！ >> > 期待你将这个高价值特性回合到openEuler社区，我们会积极检视你的补丁。感谢你对openEuler社区的贡献:)。 > > Thanks, > Keqian > >> >> >> 在 2021-06-01 11:49:34，"Keqian Zhu" <zhukeqian1(a)huawei.com> 写道： >>> Hi Siheng, >>> >>> Thanks for your patch! >>> >>> 我看到你是从原作者的kata仓库【1】回合的补丁，我发现这组补丁是比较早期的。 >>> >>> 目前社区已经正式合入了ptp_kvm arm64的特性【2】，相比这组补丁，解决了很多问题。包括： >>> 1）对热迁移的支持。 >>> 2）ptp_kvm的hyper call做了一些扩展，以区分virt_counter和phys_counter。 >>> 3）host侧使用snapshot获取时间，提高精度。 >>> 等等。 >>> >>> 考虑到特性的功能稳定性，内核的兼容性，我建议从社区主线【2】回合补丁，谢谢！ >>> >>> 【1】https://github.com/kata-containers/packaging/blob/master/kernel/pat >>> ches/4.19.x/0001-4.19-enable-ptp_kvm-for-arm64-in-kata.patch >>> 【2】https://lore.kernel.org/kvmarm/20210330145430.996981-1-maz@kernel.o >>> rg/ >>> >>> >>> BRs, >>> Keqian >>> _______________________________________________ >>> Kernel mailing list -- kernel(a)openeuler.org To unsubscribe send an >>> email to kernel-leave(a)openeuler.org >>

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[PATCH] 4.19: PTP_KVM support for arm/arm64
by lisiheng 14 Sep '21

14 Sep '21

From: lisiheng <lisiheng(a)bingosoft.net> PTP_KVM is used for high precision time sync between host and guests. It relies on transferring the wall clock and counter value from the host to the guest using a KVM-specific hypercall. mainline inclusion from mainline-v4.19 category: feature bugzilla:https://gitee.com/openeuler/kernel/issues/I3R900 CVE: NA Reference: https://www.kernel.org/doc/html/latest/_sources/virt/kvm/arm/ptp_kvm.rst.txt https://github.com/kata-containers/packaging/blob/master/kernel/patches/4.1… Signed-off-by: lisiheng <lisiheng(a)bingosoft.net> --- drivers/clocksource/arm_arch_timer.c | 24 ++++++ drivers/ptp/Kconfig | 2 +- drivers/ptp/Makefile | 1 + drivers/ptp/ptp_kvm_arm64.c | 52 ++++++++++++ drivers/ptp/{ptp_kvm.c => ptp_kvm_common.c} | 89 +++++---------------- drivers/ptp/ptp_kvm_x86.c | 87 ++++++++++++++++++++ fs/jbd2/transaction.c | 17 ---- include/asm-generic/ptp_kvm.h | 12 +++ include/linux/arm-smccc.h | 5 ++ virt/kvm/arm/hypercalls.c | 14 ++++ 10 files changed, 216 insertions(+), 87 deletions(-) create mode 100644 drivers/ptp/ptp_kvm_arm64.c rename drivers/ptp/{ptp_kvm.c => ptp_kvm_common.c} (55%) create mode 100644 drivers/ptp/ptp_kvm_x86.c create mode 100644 include/asm-generic/ptp_kvm.h diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c index 6847a5fe13fd..f84bed34e9ea 100644 --- a/drivers/clocksource/arm_arch_timer.c +++ b/drivers/clocksource/arm_arch_timer.c @@ -1653,3 +1653,27 @@ static int __init arch_timer_acpi_init(struct acpi_table_header *table) } TIMER_ACPI_DECLARE(arch_timer, ACPI_SIG_GTDT, arch_timer_acpi_init); #endif + +#if IS_ENABLED(CONFIG_PTP_1588_CLOCK_KVM) +#include <linux/arm-smccc.h> +int kvm_arch_ptp_get_clock_fn(long *cycle, struct timespec64 *ts, + struct clocksource **cs) +{ + struct arm_smccc_res hvc_res; + + arm_smccc_1_1_invoke(ARM_SMCCC_VENDOR_HYP_KVM_PTP_FUNC_ID, + &hvc_res); + + if ((long)(hvc_res.a0) < 0) + return -EOPNOTSUPP; + + ts->tv_sec = hvc_res.a0; + ts->tv_nsec = hvc_res.a1; + *cycle = hvc_res.a2 << 32 | hvc_res.a3; + *cs = &clocksource_counter; + + return 0; +} +EXPORT_SYMBOL_GPL(kvm_arch_ptp_get_clock_fn); +#endif + diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig index d137c480db46..318b3f5df1ea 100644 --- a/drivers/ptp/Kconfig +++ b/drivers/ptp/Kconfig @@ -109,7 +109,7 @@ config PTP_1588_CLOCK_PCH config PTP_1588_CLOCK_KVM tristate "KVM virtual PTP clock" depends on PTP_1588_CLOCK - depends on KVM_GUEST && X86 + depends on KVM_GUEST && X86 || ARM64 default y help This driver adds support for using kvm infrastructure as a PTP diff --git a/drivers/ptp/Makefile b/drivers/ptp/Makefile index 19efa9cfa950..1bf4940a88a6 100644 --- a/drivers/ptp/Makefile +++ b/drivers/ptp/Makefile @@ -4,6 +4,7 @@ # ptp-y := ptp_clock.o ptp_chardev.o ptp_sysfs.o +ptp_kvm-y := ptp_kvm_common.o ptp_kvm_$(ARCH).o obj-$(CONFIG_PTP_1588_CLOCK) += ptp.o obj-$(CONFIG_PTP_1588_CLOCK_DTE) += ptp_dte.o obj-$(CONFIG_PTP_1588_CLOCK_IXP46X) += ptp_ixp46x.o diff --git a/drivers/ptp/ptp_kvm_arm64.c b/drivers/ptp/ptp_kvm_arm64.c new file mode 100644 index 000000000000..07ee2fc2c7b1 --- /dev/null +++ b/drivers/ptp/ptp_kvm_arm64.c @@ -0,0 +1,52 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Virtual PTP 1588 clock for use with KVM guests + * Copyright (C) 2019 ARM Ltd. + * All Rights Reserved + */ + +#include <linux/kernel.h> +#include <linux/err.h> +#include <asm/hypervisor.h> +#include <linux/module.h> +#include <linux/psci.h> +#include <linux/arm-smccc.h> +#include <linux/timecounter.h> +#include <linux/sched/clock.h> +#include <asm/arch_timer.h> + + +int kvm_arch_ptp_init(void) +{ + struct arm_smccc_res hvc_res; + + arm_smccc_1_1_invoke(ARM_SMCCC_VENDOR_HYP_KVM_PTP_FUNC_ID, + &hvc_res); + if ((long)(hvc_res.a0) < 0) + return -EOPNOTSUPP; + + return 0; +} + +int kvm_arch_ptp_get_clock_generic(struct timespec64 *ts, + struct arm_smccc_res *hvc_res) +{ + arm_smccc_1_1_invoke(ARM_SMCCC_VENDOR_HYP_KVM_PTP_FUNC_ID, + hvc_res); + if ((long)(hvc_res->a0) < 0) + return -EOPNOTSUPP; + + ts->tv_sec = hvc_res->a0; + ts->tv_nsec = hvc_res->a1; + + return 0; +} + +int kvm_arch_ptp_get_clock(struct timespec64 *ts) +{ + struct arm_smccc_res hvc_res; + + kvm_arch_ptp_get_clock_generic(ts, &hvc_res); + + return 0; +} diff --git a/drivers/ptp/ptp_kvm.c b/drivers/ptp/ptp_kvm_common.c similarity index 55% rename from drivers/ptp/ptp_kvm.c rename to drivers/ptp/ptp_kvm_common.c index c67dd11e08b1..69a7cd05d188 100644 --- a/drivers/ptp/ptp_kvm.c +++ b/drivers/ptp/ptp_kvm_common.c @@ -1,29 +1,19 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Virtual PTP 1588 clock for use with KVM guests * * Copyright (C) 2017 Red Hat Inc. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * */ #include <linux/device.h> #include <linux/err.h> #include <linux/init.h> #include <linux/kernel.h> +#include <linux/slab.h> #include <linux/module.h> #include <uapi/linux/kvm_para.h> #include <asm/kvm_para.h> -#include <asm/pvclock.h> -#include <asm/kvmclock.h> -#include <uapi/asm/kvm_para.h> +#include <asm-generic/ptp_kvm.h> #include <linux/ptp_clock_kernel.h> @@ -34,56 +24,31 @@ struct kvm_ptp_clock { DEFINE_SPINLOCK(kvm_ptp_lock); -static struct pvclock_vsyscall_time_info *hv_clock; - -static struct kvm_clock_pairing clock_pair; -static phys_addr_t clock_pair_gpa; static int ptp_kvm_get_time_fn(ktime_t *device_time, struct system_counterval_t *system_counter, void *ctx) { - unsigned long ret; + unsigned long ret, cycle; struct timespec64 tspec; - unsigned version; - int cpu; - struct pvclock_vcpu_time_info *src; + struct clocksource *cs; spin_lock(&kvm_ptp_lock); preempt_disable_notrace(); - cpu = smp_processor_id(); - src = &hv_clock[cpu].pvti; - - do { - /* - * We are using a TSC value read in the hosts - * kvm_hc_clock_pairing handling. - * So any changes to tsc_to_system_mul - * and tsc_shift or any other pvclock - * data invalidate that measurement. - */ - version = pvclock_read_begin(src); - - ret = kvm_hypercall2(KVM_HC_CLOCK_PAIRING, - clock_pair_gpa, - KVM_CLOCK_PAIRING_WALLCLOCK); - if (ret != 0) { - pr_err_ratelimited("clock pairing hypercall ret %lu\n", ret); - spin_unlock(&kvm_ptp_lock); - preempt_enable_notrace(); - return -EOPNOTSUPP; - } - - tspec.tv_sec = clock_pair.sec; - tspec.tv_nsec = clock_pair.nsec; - ret = __pvclock_read_cycles(src, clock_pair.tsc); - } while (pvclock_read_retry(src, version)); + + ret = kvm_arch_ptp_get_clock_fn(&cycle, &tspec, &cs); + if (ret != 0) { + pr_err_ratelimited("clock pairing hypercall ret %lu\n", ret); + spin_unlock(&kvm_ptp_lock); + preempt_enable_notrace(); + return -EOPNOTSUPP; + } preempt_enable_notrace(); - system_counter->cycles = ret; - system_counter->cs = &kvm_clock; + system_counter->cycles = cycle; + system_counter->cs = cs; *device_time = timespec64_to_ktime(tspec); @@ -126,17 +91,13 @@ static int ptp_kvm_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) spin_lock(&kvm_ptp_lock); - ret = kvm_hypercall2(KVM_HC_CLOCK_PAIRING, - clock_pair_gpa, - KVM_CLOCK_PAIRING_WALLCLOCK); + ret = kvm_arch_ptp_get_clock(&tspec); if (ret != 0) { pr_err_ratelimited("clock offset hypercall ret %lu\n", ret); spin_unlock(&kvm_ptp_lock); return -EOPNOTSUPP; } - tspec.tv_sec = clock_pair.sec; - tspec.tv_nsec = clock_pair.nsec; spin_unlock(&kvm_ptp_lock); memcpy(ts, &tspec, sizeof(struct timespec64)); @@ -176,22 +137,12 @@ static void __exit ptp_kvm_exit(void) static int __init ptp_kvm_init(void) { - long ret; - - if (!kvm_para_available()) - return -ENODEV; - clock_pair_gpa = slow_virt_to_phys(&clock_pair); - hv_clock = pvclock_get_pvti_cpu0_va(); - - if (!hv_clock) - return -ENODEV; - - ret = kvm_hypercall2(KVM_HC_CLOCK_PAIRING, clock_pair_gpa, - KVM_CLOCK_PAIRING_WALLCLOCK); - if (ret == -KVM_ENOSYS || ret == -KVM_EOPNOTSUPP) - return -ENODEV; + int ret; + ret = kvm_arch_ptp_init(); + if (ret) + return -EOPNOTSUPP; kvm_ptp_clock.caps = ptp_kvm_caps; kvm_ptp_clock.ptp_clock = ptp_clock_register(&kvm_ptp_clock.caps, NULL); diff --git a/drivers/ptp/ptp_kvm_x86.c b/drivers/ptp/ptp_kvm_x86.c new file mode 100644 index 000000000000..a52cf1c2990c --- /dev/null +++ b/drivers/ptp/ptp_kvm_x86.c @@ -0,0 +1,87 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Virtual PTP 1588 clock for use with KVM guests + * + * Copyright (C) 2017 Red Hat Inc. + */ + +#include <asm/pvclock.h> +#include <asm/kvmclock.h> +#include <linux/module.h> +#include <uapi/asm/kvm_para.h> +#include <uapi/linux/kvm_para.h> +#include <linux/ptp_clock_kernel.h> + +phys_addr_t clock_pair_gpa; +struct kvm_clock_pairing clock_pair; +struct pvclock_vsyscall_time_info *hv_clock; + +int kvm_arch_ptp_init(void) +{ + int ret; + + if (!kvm_para_available()) + return -ENODEV; + + clock_pair_gpa = slow_virt_to_phys(&clock_pair); + hv_clock = pvclock_get_pvti_cpu0_va(); + if (!hv_clock) + return -ENODEV; + + ret = kvm_hypercall2(KVM_HC_CLOCK_PAIRING, clock_pair_gpa, + KVM_CLOCK_PAIRING_WALLCLOCK); + if (ret == -KVM_ENOSYS || ret == -KVM_EOPNOTSUPP) + return -ENODEV; + + return 0; +} + +int kvm_arch_ptp_get_clock(struct timespec64 *ts) +{ + long ret; + + ret = kvm_hypercall2(KVM_HC_CLOCK_PAIRING, + clock_pair_gpa, + KVM_CLOCK_PAIRING_WALLCLOCK); + if (ret != 0) + return -EOPNOTSUPP; + + ts->tv_sec = clock_pair.sec; + ts->tv_nsec = clock_pair.nsec; + + return 0; +} + +int kvm_arch_ptp_get_clock_fn(unsigned long *cycle, struct timespec64 *tspec, + struct clocksource **cs) +{ + unsigned long ret; + unsigned int version; + int cpu; + struct pvclock_vcpu_time_info *src; + + cpu = smp_processor_id(); + src = &hv_clock[cpu].pvti; + + do { + /* + * We are using a TSC value read in the hosts + * kvm_hc_clock_pairing handling. + * So any changes to tsc_to_system_mul + * and tsc_shift or any other pvclock + * data invalidate that measurement. + */ + version = pvclock_read_begin(src); + + ret = kvm_hypercall2(KVM_HC_CLOCK_PAIRING, + clock_pair_gpa, + KVM_CLOCK_PAIRING_WALLCLOCK); + tspec->tv_sec = clock_pair.sec; + tspec->tv_nsec = clock_pair.nsec; + *cycle = __pvclock_read_cycles(src, clock_pair.tsc); + } while (pvclock_read_retry(src, version)); + + *cs = &kvm_clock; + + return 0; +} diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index ffa6d3530f4b..4055929a043c 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -2085,7 +2085,6 @@ int jbd2_journal_try_to_free_buffers(journal_t *journal, { struct buffer_head *head; struct buffer_head *bh; - bool has_write_io_error = false; int ret = 0; J_ASSERT(PageLocked(page)); @@ -2110,26 +2109,10 @@ int jbd2_journal_try_to_free_buffers(journal_t *journal, jbd_unlock_bh_state(bh); if (buffer_jbd(bh)) goto busy; - - /* - * If we free a metadata buffer which has been failed to - * write out, the jbd2 checkpoint procedure will not detect - * this failure and may lead to filesystem inconsistency - * after cleanup journal tail. - */ - if (buffer_write_io_error(bh)) { - pr_err("JBD2: Error while async write back metadata bh %llu.", - (unsigned long long)bh->b_blocknr); - has_write_io_error = true; - } } while ((bh = bh->b_this_page) != head); ret = try_to_free_buffers(page); - busy: - if (has_write_io_error) - jbd2_journal_abort(journal, -EIO); - return ret; } diff --git a/include/asm-generic/ptp_kvm.h b/include/asm-generic/ptp_kvm.h new file mode 100644 index 000000000000..d87a08495710 --- /dev/null +++ b/include/asm-generic/ptp_kvm.h @@ -0,0 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * linux/drivers/clocksource/arm_arch_timer.c + * + * Copyright (C) 2019 ARM Ltd. + * All Rights Reserved + */ + +int kvm_arch_ptp_init(void); +int kvm_arch_ptp_get_clock(struct timespec64 *ts); +int kvm_arch_ptp_get_clock_fn(unsigned long *cycle, + struct timespec64 *tspec, void *cs); diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index 5b5f52ca6ac8..5a46bb6df894 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -76,6 +76,11 @@ ARM_SMCCC_SMC_32, \ 0, 1) +#define ARM_SMCCC_VENDOR_HYP_KVM_PTP_FUNC_ID \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + 0, 2) + #define ARM_SMCCC_ARCH_WORKAROUND_1 \ ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ ARM_SMCCC_SMC_32, \ diff --git a/virt/kvm/arm/hypercalls.c b/virt/kvm/arm/hypercalls.c index 7a6c5f18dff2..495b25b9ed13 100644 --- a/virt/kvm/arm/hypercalls.c +++ b/virt/kvm/arm/hypercalls.c @@ -15,6 +15,9 @@ int kvm_hvc_call_handler(struct kvm_vcpu *vcpu) u32 val = SMCCC_RET_NOT_SUPPORTED; u32 feature; gpa_t gpa; + struct timespec64 ts; + u64 cycles, cycle_high, cycle_low; + struct system_time_snapshot systime_snapshot; switch (func_id) { case ARM_SMCCC_VERSION_FUNC_ID: @@ -63,6 +66,17 @@ int kvm_hvc_call_handler(struct kvm_vcpu *vcpu) case ARM_SMCCC_HV_PV_SCHED_KICK_CPU: val = kvm_pvsched_kick_vcpu(vcpu); break; + + case ARM_SMCCC_VENDOR_HYP_KVM_PTP_FUNC_ID: + ktime_get_real_ts64(&ts); + ktime_get_snapshot(&systime_snapshot); + cycles = systime_snapshot.cycles - vcpu_vtimer(vcpu)->cntvoff; + cycle_high = cycles >> 32; + cycle_low = cycles << 32 >> 32; + + smccc_set_retval(vcpu, ts.tv_sec, ts.tv_nsec, cycle_high, cycle_low); + return 1; + default: return kvm_psci_call(vcpu); } -- 2.23.0

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[PATCH v2 OLK-5.10 0/2] spraid: support Ramaxel raid controller
by Yanling Song 14 Sep '21

14 Sep '21

Support Ramaxel raid controller Changes since v1: - Add "OLK-5.10" to subject - Add commit header into commit message - Add CONFIG_RAMAXEL_SPRAID in defconfig Yanling Song (2): spraid: support Ramaxel raid controller Add CONFIG_RAMAXEL_SPRAID in defconfig of arch arm64 and x86 to support Ramaxel spraid controller arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + drivers/scsi/Kconfig | 1 + drivers/scsi/Makefile | 1 + drivers/scsi/spraid/Kconfig | 11 + drivers/scsi/spraid/Makefile | 7 + drivers/scsi/spraid/spraid.h | 572 +++++ drivers/scsi/spraid/spraid_main.c | 3159 ++++++++++++++++++++++++ 8 files changed, 3753 insertions(+) create mode 100644 drivers/scsi/spraid/Kconfig create mode 100644 drivers/scsi/spraid/Makefile create mode 100644 drivers/scsi/spraid/spraid.h create mode 100644 drivers/scsi/spraid/spraid_main.c -- 2.17.1

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[PATCH kernel-4.19] memcg: enable accounting of ipc resources
by Yang Yingliang 14 Sep '21

14 Sep '21

From: Vasily Averin <vvs(a)virtuozzo.com> mainline inclusion from mainline-v5.15-rc1 commit 18319498fdd4cdf8c1c2c48cd432863b1f915d6f category: bugfix bugzilla: NA CVE: CVE-2021-3759 --------------------------- When user creates IPC objects it forces kernel to allocate memory for these long-living objects. It makes sense to account them to restrict the host's memory consumption from inside the memcg-limited container. This patch enables accounting for IPC shared memory segments, messages semaphores and semaphore's undo lists. Link: https://lkml.kernel.org/r/d6507b06-4df6-78f8-6c54-3ae86e3b5339@virtuozzo.com Signed-off-by: Vasily Averin <vvs(a)virtuozzo.com> Reviewed-by: Shakeel Butt <shakeelb(a)google.com> Cc: Alexander Viro <viro(a)zeniv.linux.org.uk> Cc: Alexey Dobriyan <adobriyan(a)gmail.com> Cc: Andrei Vagin <avagin(a)gmail.com> Cc: Borislav Petkov <bp(a)alien8.de> Cc: Borislav Petkov <bp(a)suse.de> Cc: Christian Brauner <christian.brauner(a)ubuntu.com> Cc: Dmitry Safonov <0x7f454c46(a)gmail.com> Cc: "Eric W. Biederman" <ebiederm(a)xmission.com> Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Cc: "H. Peter Anvin" <hpa(a)zytor.com> Cc: Ingo Molnar <mingo(a)redhat.com> Cc: "J. Bruce Fields" <bfields(a)fieldses.org> Cc: Jeff Layton <jlayton(a)kernel.org> Cc: Jens Axboe <axboe(a)kernel.dk> Cc: Jiri Slaby <jirislaby(a)kernel.org> Cc: Johannes Weiner <hannes(a)cmpxchg.org> Cc: Kirill Tkhai <ktkhai(a)virtuozzo.com> Cc: Michal Hocko <mhocko(a)kernel.org> Cc: Oleg Nesterov <oleg(a)redhat.com> Cc: Roman Gushchin <guro(a)fb.com> Cc: Serge Hallyn <serge(a)hallyn.com> Cc: Tejun Heo <tj(a)kernel.org> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Vladimir Davydov <vdavydov.dev(a)gmail.com> Cc: Yutian Yang <nglaive(a)gmail.com> Cc: Zefan Li <lizefan.x(a)bytedance.com> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> Conflicts: ipc/msg.c ipc/sem.c ipc/shm.c Signed-off-by: Li Ming <limingming.li(a)huawei.com> Reviewed-by: Kefeng Wang <wangkefeng.wang(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- ipc/msg.c | 2 +- ipc/sem.c | 9 +++++---- ipc/shm.c | 2 +- 3 files changed, 7 insertions(+), 6 deletions(-) diff --git a/ipc/msg.c b/ipc/msg.c index ac4de3f672615..9a1ff5669cfbd 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -137,7 +137,7 @@ static int newque(struct ipc_namespace *ns, struct ipc_params *params) key_t key = params->key; int msgflg = params->flg; - msq = kvmalloc(sizeof(*msq), GFP_KERNEL); + msq = kvmalloc(sizeof(*msq), GFP_KERNEL_ACCOUNT); if (unlikely(!msq)) return -ENOMEM; diff --git a/ipc/sem.c b/ipc/sem.c index 2bf535dd0b934..171881795a302 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -494,7 +494,7 @@ static struct sem_array *sem_alloc(size_t nsems) return NULL; size = sizeof(*sma) + nsems * sizeof(sma->sems[0]); - sma = kvmalloc(size, GFP_KERNEL); + sma = kvmalloc(size, GFP_KERNEL_ACCOUNT); if (unlikely(!sma)) return NULL; @@ -1813,7 +1813,7 @@ static inline int get_undo_list(struct sem_undo_list **undo_listp) undo_list = current->sysvsem.undo_list; if (!undo_list) { - undo_list = kzalloc(sizeof(*undo_list), GFP_KERNEL); + undo_list = kzalloc(sizeof(*undo_list), GFP_KERNEL_ACCOUNT); if (undo_list == NULL) return -ENOMEM; spin_lock_init(&undo_list->lock); @@ -1897,7 +1897,7 @@ static struct sem_undo *find_alloc_undo(struct ipc_namespace *ns, int semid) rcu_read_unlock(); /* step 2: allocate new undo structure */ - new = kzalloc(sizeof(struct sem_undo) + sizeof(short)*nsems, GFP_KERNEL); + new = kzalloc(sizeof(struct sem_undo) + sizeof(short)*nsems, GFP_KERNEL_ACCOUNT); if (!new) { ipc_rcu_putref(&sma->sem_perm, sem_rcu_free); return ERR_PTR(-ENOMEM); @@ -1961,7 +1961,8 @@ static long do_semtimedop(int semid, struct sembuf __user *tsops, if (nsops > ns->sc_semopm) return -E2BIG; if (nsops > SEMOPM_FAST) { - sops = kvmalloc_array(nsops, sizeof(*sops), GFP_KERNEL); + sops = kvmalloc_array(nsops, sizeof(*sops), + GFP_KERNEL_ACCOUNT); if (sops == NULL) return -ENOMEM; } diff --git a/ipc/shm.c b/ipc/shm.c index 1c65fb357395e..904fe53256af0 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -619,7 +619,7 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params) ns->shm_tot + numpages > ns->shm_ctlall) return -ENOSPC; - shp = kvmalloc(sizeof(*shp), GFP_KERNEL); + shp = kvmalloc(sizeof(*shp), GFP_KERNEL_ACCOUNT); if (unlikely(!shp)) return -ENOMEM; -- 2.25.1

1 0

[PATCH kernel-4.19] uce: pagecache reading scenario add shmem support
by Yang Yingliang 14 Sep '21

14 Sep '21

From: Tong Tiangen <tongtiangen(a)huawei.com> hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I44R9D CVE: NA --------------------------- The call trace is as follows: __arch_copy_to_user+0x1bc/0x21c copy_page_to_iter+0xdc/0x328 shmem_file_read_iter+0x124/0x350 __vfs_read+0x11c/0x188 vfs_read+0x94/0x150 ksys_read+0x6c/0xd8 __arm64_sys_read+0x24/0x30 el0_svc_common+0x78/0x130 el0_svc_handler+0x38/0x78 el0_svc+0x8/0xc This patch add uce kernel recovery path support in shmem_file_read_iter(). Signed-off-by: Tong Tiangen <tongtiangen(a)huawei.com> Reviewed-by: Kefeng Wang <wangkefeng.wang(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- mm/shmem.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/mm/shmem.c b/mm/shmem.c index 4522348cfc189..df7bac986e5e2 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2674,7 +2674,12 @@ static ssize_t shmem_file_read_iter(struct kiocb *iocb, struct iov_iter *to) * Ok, we have the page, and it's up-to-date, so * now we can copy it to user space... */ - ret = copy_page_to_iter(page, offset, nr, to); +#ifdef CONFIG_UCE_KERNEL_RECOVERY + if (is_pagecache_reading_kernel_recovery_enable()) + ret = copy_page_to_iter_generic_read(page, offset, nr, to); + else + ret = copy_page_to_iter(page, offset, nr, to); +#endif retval += ret; offset += ret; index += offset >> PAGE_SHIFT; -- 2.25.1

1 0

[PATCH kernel-4.19 1/2] crypto/sec: add aead support for user-side
by Yang Yingliang 14 Sep '21

14 Sep '21

From: Yu'an Wang <wangyuan46(a)huawei.com> driver inclusion category: Feature bugzilla: NA CVE: NA In this patch, add aead alg support for user-side alg enable. Signed-off-by: Yu'an Wang <wangyuan46(a)huawei.com> Reviewed-by: Guangwei Zhou <zhouguangwei5(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- drivers/crypto/hisilicon/sec2/sec_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/hisilicon/sec2/sec_main.c b/drivers/crypto/hisilicon/sec2/sec_main.c index e3b21ef4d0c82..deda0f679ff65 100644 --- a/drivers/crypto/hisilicon/sec2/sec_main.c +++ b/drivers/crypto/hisilicon/sec2/sec_main.c @@ -816,7 +816,7 @@ static int sec_qm_pre_init(struct hisi_qm *qm, struct pci_dev *pdev) int ret; #ifdef CONFIG_CRYPTO_QM_UACCE - qm->algs = "sec\ncipher\ndigest\n"; + qm->algs = "sec\ncipher\ndigest\naead\n"; qm->uacce_mode = uacce_mode; #endif qm->pdev = pdev; -- 2.25.1

1 1

[PATCH kernel-4.19] Intel: PCI: Add support for Immediate Readiness
by Yang Yingliang 11 Sep '21

11 Sep '21

From: Felipe Balbi <felipe.balbi(a)linux.intel.com> mainline inclusion from mainline-v4.20-rc1 commit d6112f8def514e019658bcc9b57d53acdb71ca3f category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I47H3V CVE: NA -------------------------------- commit d6112f8def514e019658bcc9b57d53acdb71ca3f upstream. PCIe r4.0, sec 7.5.1.1.4 defines a new bit in the Status Register: Immediate Readiness – This optional bit, when Set, indicates the Function is guaranteed to be ready to successfully complete valid configuration accesses at any time following any reset that the host is capable of issuing Configuration Requests to this Function. When this bit is Set, for accesses to this Function, software is exempt from all requirements to delay configuration accesses following any type of reset, including but not limited to the timing requirements defined in Section 6.6. This means that all delays after a Conventional or Function Reset can be skipped. This patch reads such bit and caches its value in a flag inside struct pci_dev to be checked later if we should delay or can skip delays after a reset. While at that, also move the explicit msleep(100) call from pcie_flr() and pci_af_flr() to pci_dev_wait(). Signed-off-by: Felipe Balbi <felipe.balbi(a)linux.intel.com> [bhelgaas: rename PCI_STATUS_IMMEDIATE to PCI_STATUS_IMM_READY] Signed-off-by: Bjorn Helgaas <bhelgaas(a)google.com> Signed-off-by: Lin Wang <lin.x.wang(a)intel.com> Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> Reviewed-by: Xiongfeng Wang <wangxiongfeng2(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- drivers/pci/pci.c | 13 ++++++++++++- include/linux/pci.h | 1 + include/uapi/linux/pci_regs.h | 1 + 3 files changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 9b88665347c2b..52618fb1bf64c 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1009,7 +1009,7 @@ static void __pci_start_power_transition(struct pci_dev *dev, pci_power_t state) * because have already delayed for the bridge. */ if (dev->runtime_d3cold) { - if (dev->d3cold_delay) + if (dev->d3cold_delay && !dev->imm_ready) msleep(dev->d3cold_delay); /* * When powering on a bridge from D3cold, the @@ -2756,6 +2756,7 @@ EXPORT_SYMBOL_GPL(pci_d3cold_disable); void pci_pm_init(struct pci_dev *dev) { int pm; + u16 status; u16 pmc; pm_runtime_forbid(&dev->dev); @@ -2818,6 +2819,10 @@ void pci_pm_init(struct pci_dev *dev) /* Disable the PME# generation functionality */ pci_pme_active(dev, false); } + + pci_read_config_word(dev, PCI_STATUS, &status); + if (status & PCI_STATUS_IMM_READY) + dev->imm_ready = 1; } static unsigned long pci_ea_flags(struct pci_dev *dev, u8 prop) @@ -4504,6 +4509,9 @@ int pcie_flr(struct pci_dev *dev) pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_BCR_FLR); + if (dev->imm_ready) + return 0; + /* * Per PCIe r4.0, sec 6.6.2, a device must complete an FLR within * 100ms, but may silently discard requests while the FLR is in @@ -4545,6 +4553,9 @@ static int pci_af_flr(struct pci_dev *dev, int probe) pci_write_config_byte(dev, pos + PCI_AF_CTRL, PCI_AF_CTRL_FLR); + if (dev->imm_ready) + return 0; + /* * Per Advanced Capabilities for Conventional PCI ECN, 13 April 2006, * updated 27 July 2006; a device must complete an FLR within diff --git a/include/linux/pci.h b/include/linux/pci.h index 6e4780bd1c84d..228dfd59086d4 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -327,6 +327,7 @@ struct pci_dev { pci_power_t current_state; /* Current operating state. In ACPI, this is D0-D3, D0 being fully functional, and D3 being off. */ + unsigned int imm_ready:1; /* Supports Immediate Readiness */ u8 pm_cap; /* PM capability offset */ unsigned int pme_support:5; /* Bitmask of states from which PME# can be generated */ diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h index b51b5ea5c456d..c209c4d1730ad 100644 --- a/include/uapi/linux/pci_regs.h +++ b/include/uapi/linux/pci_regs.h @@ -52,6 +52,7 @@ #define PCI_COMMAND_INTX_DISABLE 0x400 /* INTx Emulation Disable */ #define PCI_STATUS 0x06 /* 16 bits */ +#define PCI_STATUS_IMM_READY 0x01 /* Immediate Readiness */ #define PCI_STATUS_INTERRUPT 0x08 /* Interrupt status */ #define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */ #define PCI_STATUS_66MHZ 0x20 /* Support 66 MHz PCI 2.1 bus */ -- 2.25.1

1 0

[PATCH kernel-4.19 1/2] nvme-pci: use unsigned for io queue depth
by Yang Yingliang 11 Sep '21

11 Sep '21

From: Chaitanya Kulkarni <chaitanya.kulkarni(a)wdc.com> mainline inclusion from mainline-5.9-rc1 commit 61f3b89630973037f67d8e25e5d26e80a51a7b37 category: bugfix bugzilla: 175286 CVE: NA --------------------------- The NVMe PCIe declares module parameter io_queue_depth as int. Change this to u16 as queue depth can never be negative. Now to reflect this update module parameter getter function from param_get_int() -> param_get_uint() and respective setter function with type of n changed from int to u16 with param_set_int() to param_set_ushort(). Finally update struct nvme_dev q_depth member to u16 and use u16 in min_t() when calculating dev->q_depth in the nvme_pci_enable() (since q_depth is now u16) and use unsigned int instead of int when calculating dev->tagset.queue_depth as target variable tagset->queue_depth is of type unsigned int in nvme_dev_add(). Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni(a)wdc.com> Reviewed-by: Sagi Grimberg <sagi(a)grimberg.me> Signed-off-by: Christoph Hellwig <hch(a)lst.de> Conflicts: drivers/nvme/host/pci.c [ Feature patch 3b6592f70ad7("nvme: utilize two queue maps, one for reads and one for writes") is not applied. ed92ad37e88("nvme-pci: only set nr_maps to 2 if poll queues are supported") is not applied. aa22c8e665("nvme-pci: set ctrl sqsize to the device q_depth") is not applied. ] Signed-off-by: Zhihao Cheng <chengzhihao1(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- drivers/nvme/host/pci.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 0a5e20808ba2e..e741b1d167c3e 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -66,10 +66,10 @@ MODULE_PARM_DESC(sgl_threshold, static int io_queue_depth_set(const char *val, const struct kernel_param *kp); static const struct kernel_param_ops io_queue_depth_ops = { .set = io_queue_depth_set, - .get = param_get_int, + .get = param_get_uint, }; -static int io_queue_depth = 1024; +static unsigned int io_queue_depth = 1024; module_param_cb(io_queue_depth, &io_queue_depth_ops, &io_queue_depth, 0644); MODULE_PARM_DESC(io_queue_depth, "set io queue depth, should >= 2"); @@ -93,7 +93,7 @@ struct nvme_dev { unsigned online_queues; unsigned max_qid; unsigned int num_vecs; - int q_depth; + u16 q_depth; u32 db_stride; void __iomem *bar; unsigned long bar_mapped_size; @@ -126,13 +126,14 @@ struct nvme_dev { static int io_queue_depth_set(const char *val, const struct kernel_param *kp) { - int n = 0, ret; + int ret; + u16 n; - ret = kstrtoint(val, 10, &n); + ret = kstrtou16(val, 10, &n); if (ret != 0 || n < 2) return -EINVAL; - return param_set_int(val, kp); + return param_set_ushort(val, kp); } static inline unsigned int sq_idx(unsigned int qid, u32 stride) @@ -2062,8 +2063,8 @@ static int nvme_dev_add(struct nvme_dev *dev) dev->tagset.nr_hw_queues = dev->online_queues - 1; dev->tagset.timeout = NVME_IO_TIMEOUT; dev->tagset.numa_node = dev_to_node(dev->dev); - dev->tagset.queue_depth = - min_t(int, dev->q_depth, BLK_MQ_MAX_DEPTH) - 1; + dev->tagset.queue_depth = min_t(unsigned int, dev->q_depth, + BLK_MQ_MAX_DEPTH) - 1; dev->tagset.cmd_size = nvme_pci_cmd_size(dev, false); if ((dev->ctrl.sgls & ((1 << 0) | (1 << 1))) && sgl_threshold) { dev->tagset.cmd_size = max(dev->tagset.cmd_size, @@ -2121,7 +2122,7 @@ static int nvme_pci_enable(struct nvme_dev *dev) dev->ctrl.cap = lo_hi_readq(dev->bar + NVME_REG_CAP); - dev->q_depth = min_t(int, NVME_CAP_MQES(dev->ctrl.cap) + 1, + dev->q_depth = min_t(u16, NVME_CAP_MQES(dev->ctrl.cap) + 1, io_queue_depth); dev->db_stride = 1 << NVME_CAP_STRIDE(dev->ctrl.cap); dev->dbs = dev->bar + 4096; -- 2.25.1

1 1

[PATCH hulk-4.19-next 00/75] misc updates for hns3 driver 2021.09.10
by Yonglong Liu 11 Sep '21

11 Sep '21

This patch set contains some backport patch from mainline, and some bugfix for hns3 driver. Chen Zhou (1): net: hns3: replace snprintf with scnprintf in hns3_update_strings Guangbin Huang (13): net: hns3: dump tqp enable status in debugfs net: hns3: remediate a potential overflow risk of bd_num_list net: hns3: VF not request link status when PF support push link status feature net: hns3: add interfaces to query information of tm priority/qset net: hns3: add debugfs support for tm priority and qset info net: hns3: refactor dump tm map of debugfs net: hns3: refactor dump tm of debugfs net: hns3: refactor dump tc of debugfs net: hns3: refactor dump qos pause cfg of debugfs net: hns3: refactor dump qos pri map of debugfs net: hns3: refactor dump qos buf cfg of debugfs net: hns3: refactor dump qs shaper of debugfs net: hns3: fix get wrong pfc_en when query PFC configuration Hao Chen (4): net: hns3: fix for vxlan gpe tx checksum bug net: hns3: refactor queue map of debugfs net: hns3: refactor queue info of debugfs net: hns3: refactor dump fd tcam of debugfs Huazhong Tan (8): net: hns3: add a print for initializing CMDQ when reset pending net: hns3: add a missing mutex destroy in hclge_init_ad_dev() net: hns3: print out speed info when parsing speed fails net: hns3: remove a misused pragma packed net: hns3: remove a duplicate pf reset counting net: hns3: change the value of the SEPARATOR_VALUE macro in hclgevf_main.c net: hns3: refactor dump bd info of debugfs net: hns3: refactor dump mac list of debugfs Jian Shen (17): net: hns3: refine function hclge_set_vf_vlan_cfg() net: hns3: fix incorrect handling of sctp6 rss tuple net: hns3: cleanup for endian issue for VF RSS net: hns3: fix error mask definition of flow director net: hns3: fix query vlan mask value error for flow director net: hns3: refine the struct hane3_tc_info net: hns3: split out hclge_dbg_dump_qos_buf_cfg() net: hns3: add support for dumping MAC umv counter in debugfs net: hns3: add support for modify VLAN filter state net: hns3: add query basic info support for VF net: hns3: add support for VF modify VLAN filter state net: hns3: add debugfs support for vlan configuration net: hns3: add support for tc mqprio offload net: hns3: fix mixed flag HCLGE_FLAG_MQPRIO_ENABLE and HCLGE_FLAG_DCB_ENABLE net: hns3: disable port VLAN filter when support function level VLAN filter control net: hns3: add 'QoS' support for port based VLAN configuration net: hns3: remove tc enable checking Jiaran Zhang (5): net: hns3: refactor dump intr of debugfs net: hns3: refactor dump reset info of debugfs net: hns3: refactor dump m7 info of debugfs net: hns3: refactor dump ncl config of debugfs net: hns3: refactor dump mac tnl status of debugfs Peng Li (2): net: hns3: remove redundant param mbx_event_pending net: hns3: remove unused parameter from hclge_set_vf_vlan_common() Rikard Falkeborn (2): net: hns3: Constify static structs net: hns3: Constify static structs Wang Hai (1): net: hns3: Supply missing hclge_dcb.h include file Yi Li (1): net: hns3: Fix for geneve tx checksum bug Yonglong Liu (7): net: hns3: refactor dump mac tbl of debugfs net: hns3: pad the short tunnel frame before sending to hardware net: hns3: fix memory override when bd_num is bigger than the ring size net: hns3: fix kernel crash when unload VF while it is being reset net: hns3: cleanup for some print type miss match and blank lines net: hns3: the pointer is cast to another pointer in a different type, which is incompatible. net: hns3: update hns3 version to 21.9.2 Yufeng Mo (11): net: hns3: change hclge/hclgevf workqueue to WQ_UNBOUND mode net: hns3: change affinity_mask to numa node range net: hns3: add debugfs of dumping pf interrupt resources net: hns3: refactor the debugfs process net: hns3: refactor dump mng tbl of debugfs net: hns3: refactor dump loopback of debugfs net: hns3: refactor dump reg of debugfs net: hns3: refactor dump reg dcb info of debugfs net: hns3: refactor dump serv info of debugfs net: hns3: change the method of getting cmd index in debugfs net: hns3: remove the useless debugfs file node cmd Yunsheng Lin (1): net: hns3: check the return of skb_checksum_help() Zheng Yongjun (1): hisilicon/hns3: convert comma to semicolon shenhao (1): Revert: net: hns3: adds support for extended VLAN mode and 'QOS' in vlan 802.1Q protocol. .../net/ethernet/hisilicon/hns3/hclge_mbx.h | 10 +- drivers/net/ethernet/hisilicon/hns3/hnae3.h | 86 +- .../hisilicon/hns3/hns3_cae/hns3_cae_port.c | 6 + .../hns3/hns3_cae/hns3_cae_version.h | 2 +- .../ethernet/hisilicon/hns3/hns3_debugfs.c | 1126 +++++-- .../ethernet/hisilicon/hns3/hns3_debugfs.h | 62 + .../net/ethernet/hisilicon/hns3/hns3_enet.c | 134 +- .../net/ethernet/hisilicon/hns3/hns3_enet.h | 6 +- .../ethernet/hisilicon/hns3/hns3_ethtool.c | 16 +- .../hisilicon/hns3/hns3pf/hclge_cmd.c | 5 +- .../hisilicon/hns3/hns3pf/hclge_cmd.h | 28 +- .../hisilicon/hns3/hns3pf/hclge_dcb.c | 136 +- .../hisilicon/hns3/hns3pf/hclge_debugfs.c | 2763 ++++++++++------- .../hisilicon/hns3/hns3pf/hclge_debugfs.h | 71 +- .../hisilicon/hns3/hns3pf/hclge_main.c | 598 ++-- .../hisilicon/hns3/hns3pf/hclge_main.h | 52 +- .../hisilicon/hns3/hns3pf/hclge_mbx.c | 54 +- .../ethernet/hisilicon/hns3/hns3pf/hclge_tm.c | 469 ++- .../ethernet/hisilicon/hns3/hns3pf/hclge_tm.h | 52 +- .../hisilicon/hns3/hns3vf/hclgevf_cmd.h | 6 +- .../hisilicon/hns3/hns3vf/hclgevf_main.c | 109 +- .../hisilicon/hns3/hns3vf/hclgevf_main.h | 10 +- .../hisilicon/hns3/hns3vf/hclgevf_mbx.c | 17 +- 23 files changed, 3853 insertions(+), 1965 deletions(-) create mode 100644 drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.h -- 2.33.0

3 78

[PATCH openEuler-1.0-LTS 01/75] net: hns3: change hclge/hclgevf workqueue to WQ_UNBOUND mode
by Yang Yingliang 11 Sep '21

11 Sep '21

From: Yufeng Mo <moyufeng(a)huawei.com> driver inclusion category: bugfix bugzilla: NA CVE: NA ---------------------------- Currently, the workqueue of hclge/hclgevf is executed on the CPU that initiates scheduling requests by default. In stress scenarios, the CPU may be busy and workqueue scheduling is completed after a long period of time. To avoid this situation and implement proper scheduling, use the WQ_UNBOUND mode instead. In this way, the workqueue can be performed on a relatively idle CPU. Signed-off-by: Yufeng Mo <moyufeng(a)huawei.com> Signed-off-by: Yonglong Liu <liuyonglong(a)huawei.com> Reviewed-by: Junxin Chen <chenjunxin1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- .../hisilicon/hns3/hns3pf/hclge_main.c | 31 +++---------------- .../hisilicon/hns3/hns3pf/hclge_main.h | 1 - .../hisilicon/hns3/hns3vf/hclgevf_main.c | 2 +- 3 files changed, 5 insertions(+), 29 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c index f1c57600f45de..e9a04e72ae025 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -2697,25 +2697,21 @@ static void hclge_mbx_task_schedule(struct hclge_dev *hdev) { if (!test_bit(HCLGE_STATE_REMOVING, &hdev->state) && !test_and_set_bit(HCLGE_STATE_MBX_SERVICE_SCHED, &hdev->state)) - mod_delayed_work_on(cpumask_first(&hdev->affinity_mask), - hclge_wq, &hdev->service_task, 0); + mod_delayed_work(hclge_wq, &hdev->service_task, 0); } static void hclge_reset_task_schedule(struct hclge_dev *hdev) { if (!test_bit(HCLGE_STATE_REMOVING, &hdev->state) && !test_and_set_bit(HCLGE_STATE_RST_SERVICE_SCHED, &hdev->state)) - mod_delayed_work_on(cpumask_first(&hdev->affinity_mask), - hclge_wq, &hdev->service_task, 0); + mod_delayed_work(hclge_wq, &hdev->service_task, 0); } void hclge_task_schedule(struct hclge_dev *hdev, unsigned long delay_time) { if (!test_bit(HCLGE_STATE_REMOVING, &hdev->state) && !test_bit(HCLGE_STATE_RST_FAIL, &hdev->state)) - mod_delayed_work_on(cpumask_first(&hdev->affinity_mask), - hclge_wq, &hdev->service_task, - delay_time); + mod_delayed_work(hclge_wq, &hdev->service_task, delay_time); } static int hclge_get_mac_link_status(struct hclge_dev *hdev, int *link_status) @@ -3206,33 +3202,14 @@ static void hclge_get_misc_vector(struct hclge_dev *hdev) hdev->num_msi_used += 1; } -static void hclge_irq_affinity_notify(struct irq_affinity_notify *notify, - const cpumask_t *mask) -{ - struct hclge_dev *hdev = container_of(notify, struct hclge_dev, - affinity_notify); - - cpumask_copy(&hdev->affinity_mask, mask); -} - -static void hclge_irq_affinity_release(struct kref *ref) -{ -} - static void hclge_misc_affinity_setup(struct hclge_dev *hdev) { irq_set_affinity_hint(hdev->misc_vector.vector_irq, &hdev->affinity_mask); - - hdev->affinity_notify.notify = hclge_irq_affinity_notify; - hdev->affinity_notify.release = hclge_irq_affinity_release; - irq_set_affinity_notifier(hdev->misc_vector.vector_irq, - &hdev->affinity_notify); } static void hclge_misc_affinity_teardown(struct hclge_dev *hdev) { - irq_set_affinity_notifier(hdev->misc_vector.vector_irq, NULL); irq_set_affinity_hint(hdev->misc_vector.vector_irq, NULL); } @@ -11720,7 +11697,7 @@ int hclge_init(void) { pr_info("%s is initializing\n", HCLGE_NAME); - hclge_wq = alloc_workqueue("%s", 0, 0, HCLGE_NAME); + hclge_wq = alloc_workqueue("%s", WQ_UNBOUND, 0, HCLGE_NAME); if (!hclge_wq) { pr_err("%s: failed to create workqueue\n", HCLGE_NAME); return -ENOMEM; diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h index 02f64ae33d18d..eefbe9b4383b6 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h @@ -864,7 +864,6 @@ struct hclge_dev { /* affinity mask and notify for misc interrupt */ cpumask_t affinity_mask; - struct irq_affinity_notify affinity_notify; }; /* VPort level vlan tag configuration for TX direction */ diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c index 64ac2de016e92..7516e8530b9a6 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c @@ -3601,7 +3601,7 @@ static int hclgevf_init(void) { pr_info("%s is initializing\n", HCLGEVF_NAME); - hclgevf_wq = alloc_workqueue("%s", 0, 0, HCLGEVF_NAME); + hclgevf_wq = alloc_workqueue("%s", WQ_UNBOUND, 0, HCLGEVF_NAME); if (!hclgevf_wq) { pr_err("%s: failed to create workqueue\n", HCLGEVF_NAME); return -ENOMEM; -- 2.25.1

1 74

[PATCH kernel-4.19 01/73] net: hns3: change hclge/hclgevf workqueue to WQ_UNBOUND mode
by Yang Yingliang 11 Sep '21

11 Sep '21

From: Yufeng Mo <moyufeng(a)huawei.com> driver inclusion category: bugfix bugzilla: NA CVE: NA ---------------------------- Currently, the workqueue of hclge/hclgevf is executed on the CPU that initiates scheduling requests by default. In stress scenarios, the CPU may be busy and workqueue scheduling is completed after a long period of time. To avoid this situation and implement proper scheduling, use the WQ_UNBOUND mode instead. In this way, the workqueue can be performed on a relatively idle CPU. Signed-off-by: Yufeng Mo <moyufeng(a)huawei.com> Signed-off-by: Yonglong Liu <liuyonglong(a)huawei.com> Reviewed-by: Junxin Chen <chenjunxin1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- .../hisilicon/hns3/hns3pf/hclge_main.c | 31 +++---------------- .../hisilicon/hns3/hns3pf/hclge_main.h | 1 - .../hisilicon/hns3/hns3vf/hclgevf_main.c | 2 +- 3 files changed, 5 insertions(+), 29 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c index f1c57600f45de..e9a04e72ae025 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -2697,25 +2697,21 @@ static void hclge_mbx_task_schedule(struct hclge_dev *hdev) { if (!test_bit(HCLGE_STATE_REMOVING, &hdev->state) && !test_and_set_bit(HCLGE_STATE_MBX_SERVICE_SCHED, &hdev->state)) - mod_delayed_work_on(cpumask_first(&hdev->affinity_mask), - hclge_wq, &hdev->service_task, 0); + mod_delayed_work(hclge_wq, &hdev->service_task, 0); } static void hclge_reset_task_schedule(struct hclge_dev *hdev) { if (!test_bit(HCLGE_STATE_REMOVING, &hdev->state) && !test_and_set_bit(HCLGE_STATE_RST_SERVICE_SCHED, &hdev->state)) - mod_delayed_work_on(cpumask_first(&hdev->affinity_mask), - hclge_wq, &hdev->service_task, 0); + mod_delayed_work(hclge_wq, &hdev->service_task, 0); } void hclge_task_schedule(struct hclge_dev *hdev, unsigned long delay_time) { if (!test_bit(HCLGE_STATE_REMOVING, &hdev->state) && !test_bit(HCLGE_STATE_RST_FAIL, &hdev->state)) - mod_delayed_work_on(cpumask_first(&hdev->affinity_mask), - hclge_wq, &hdev->service_task, - delay_time); + mod_delayed_work(hclge_wq, &hdev->service_task, delay_time); } static int hclge_get_mac_link_status(struct hclge_dev *hdev, int *link_status) @@ -3206,33 +3202,14 @@ static void hclge_get_misc_vector(struct hclge_dev *hdev) hdev->num_msi_used += 1; } -static void hclge_irq_affinity_notify(struct irq_affinity_notify *notify, - const cpumask_t *mask) -{ - struct hclge_dev *hdev = container_of(notify, struct hclge_dev, - affinity_notify); - - cpumask_copy(&hdev->affinity_mask, mask); -} - -static void hclge_irq_affinity_release(struct kref *ref) -{ -} - static void hclge_misc_affinity_setup(struct hclge_dev *hdev) { irq_set_affinity_hint(hdev->misc_vector.vector_irq, &hdev->affinity_mask); - - hdev->affinity_notify.notify = hclge_irq_affinity_notify; - hdev->affinity_notify.release = hclge_irq_affinity_release; - irq_set_affinity_notifier(hdev->misc_vector.vector_irq, - &hdev->affinity_notify); } static void hclge_misc_affinity_teardown(struct hclge_dev *hdev) { - irq_set_affinity_notifier(hdev->misc_vector.vector_irq, NULL); irq_set_affinity_hint(hdev->misc_vector.vector_irq, NULL); } @@ -11720,7 +11697,7 @@ int hclge_init(void) { pr_info("%s is initializing\n", HCLGE_NAME); - hclge_wq = alloc_workqueue("%s", 0, 0, HCLGE_NAME); + hclge_wq = alloc_workqueue("%s", WQ_UNBOUND, 0, HCLGE_NAME); if (!hclge_wq) { pr_err("%s: failed to create workqueue\n", HCLGE_NAME); return -ENOMEM; diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h index 02f64ae33d18d..eefbe9b4383b6 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h @@ -864,7 +864,6 @@ struct hclge_dev { /* affinity mask and notify for misc interrupt */ cpumask_t affinity_mask; - struct irq_affinity_notify affinity_notify; }; /* VPort level vlan tag configuration for TX direction */ diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c index 64ac2de016e92..7516e8530b9a6 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c @@ -3601,7 +3601,7 @@ static int hclgevf_init(void) { pr_info("%s is initializing\n", HCLGEVF_NAME); - hclgevf_wq = alloc_workqueue("%s", 0, 0, HCLGEVF_NAME); + hclgevf_wq = alloc_workqueue("%s", WQ_UNBOUND, 0, HCLGEVF_NAME); if (!hclgevf_wq) { pr_err("%s: failed to create workqueue\n", HCLGEVF_NAME); return -ENOMEM; -- 2.25.1

1 72

[PATCH kernel-4.19 1/3] tcp_comp: Fix ZSTD_decompressStream failed
by Yang Yingliang 11 Sep '21

11 Sep '21

From: Wang Yufen <wangyufen(a)huawei.com> hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I48H9Z?from=project-issue CVE: NA ------------------------------------------------- This patch fixes possible ZSTD_decompressStream failures. When decompressing skb->data, should skip the previous rxm->offset data. Signed-off-by: Wang Yufen <wangyufen(a)huawei.com> Reviewed-by: Wei Yongjun <weiyongjun1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- net/ipv4/tcp_comp.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/net/ipv4/tcp_comp.c b/net/ipv4/tcp_comp.c index bd5274091225b..de5f735c5ce61 100644 --- a/net/ipv4/tcp_comp.c +++ b/net/ipv4/tcp_comp.c @@ -593,8 +593,8 @@ static void *tcp_comp_get_rx_stream(struct sock *sk) static int tcp_comp_decompress(struct sock *sk, struct sk_buff *skb) { struct tcp_comp_context *ctx = comp_get_ctx(sk); + struct strp_msg *rxm = strp_msg(skb); const int plen = skb->len; - struct strp_msg *rxm; ZSTD_outBuffer outbuf; ZSTD_inBuffer inbuf; int len; @@ -615,11 +615,11 @@ static int tcp_comp_decompress(struct sock *sk, struct sk_buff *skb) ctx->rx.data_offset); memcpy((char *)ctx->rx.compressed_data + ctx->rx.data_offset, - skb->data, plen); + (char *)skb->data + rxm->offset, plen - rxm->offset); inbuf.src = ctx->rx.compressed_data; inbuf.pos = 0; - inbuf.size = plen + ctx->rx.data_offset; + inbuf.size = plen - rxm->offset + ctx->rx.data_offset; ctx->rx.data_offset = 0; outbuf.dst = ctx->rx.plaintext_data; @@ -630,7 +630,6 @@ static int tcp_comp_decompress(struct sock *sk, struct sk_buff *skb) size_t ret; to = outbuf.dst; - ret = ZSTD_decompressStream(ctx->rx.dstream, &outbuf, &inbuf); if (ZSTD_isError(ret)) return -EIO; @@ -640,8 +639,8 @@ static int tcp_comp_decompress(struct sock *sk, struct sk_buff *skb) len = skb_tailroom(skb); __skb_put(skb, len); - rxm = strp_msg(skb); - rxm->full_len += len; + rxm->full_len += (len + rxm->offset); + rxm->offset = 0; len += plen; skb_copy_to_linear_data(skb, to, len); -- 2.25.1

1 2

[PATCH kernel-4.19] mm: downgrade the print level in do_shrink_slab
by Yang Yingliang 11 Sep '21

11 Sep '21

From: Chen Wandun <chenwandun(a)huawei.com> hulk inclusion category: bugfix bugzilla: 177207, https://gitee.com/openeuler/kernel/issues/I49MBF CVE: NA --------------------------- The number of deferred objects might get windup to an absurd number, it may cause variable total_scan overflow, that will result in a lot of log and the cpu usage of kswapd and rsyslogd will also increase. The overflow of total_scan has been handled properly, the log is not such important, so downgrade the print level. Signed-off-by: Chen Wandun <chenwandun(a)huawei.com> Reviewed-by: Kefeng Wang <wangkefeng.wang(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- mm/vmscan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index abcffa315256f..90b47caa98af3 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -486,7 +486,7 @@ static unsigned long do_shrink_slab(struct shrink_control *shrinkctl, total_scan += delta; if (total_scan < 0) { - pr_err("shrink_slab: %pF negative objects to delete nr=%ld\n", + pr_debug("shrink_slab: %pF negative objects to delete nr=%ld\n", shrinker->scan_objects, total_scan); total_scan = freeable; next_deferred = nr; -- 2.25.1

1 0

[PATCH openEuler-1.0-LTS v4 000/292] Enable Intel Icelake CPU support
by Zheng Zengkai 11 Sep '21

11 Sep '21

Enable Intel Icelake CPU support, backport related patches from upstream. Fix kabi broken introduced by the patch set with patches 0288 - 0292. Alexander Shishkin (28): Intel: perf/ring_buffer: Fix AUX software double buffering Intel: perf/x86/intel/pt: Remove software double buffering PMU capability intel_th: Only create useful device nodes intel_th: Rework resource passing between glue layers and core intel_th: Skip subdevices if their MMIO is missing intel_th: Add "rtit" source device intel_th: Communicate IRQ via resource intel_th: pci: Use MSI interrupt signalling intel_th: msu: Start handling IRQs intel_th: Only report useful IRQs to subdevices intel_th: msu: Replace open-coded list_{first,last,next}_entry variants intel_th: msu: Switch over to scatterlist intel_th: msu: Factor out pipeline draining intel_th: gth: Factor out trace start/stop intel_th: Add switch triggering support intel_th: msu: Correct the block wrap detection intel_th: msu: Add a sysfs attribute to trigger window switch intel_th: msu: Add current window tracking intel_th: msu: Support multipage blocks intel_th: msu: Split sgt array and pointer in multiwindow mode intel_th: msu: Start read iterator from a non-empty window intel_th: msu: Introduce buffer interface intel_th: msu-sink: An example msu buffer "sink" intel_th: gth: Fix the window switching sequence intel_th: msu: Fix an uninitialized mutex intel_th: Fix freeing IRQs intel_th: msu: Fix window switching without windows intel_th: msu: Fix the unexpected state warning Alexandru Gagniuc (1): Intel:PCI: pciehp: Wait for PDS if in-band presence is disabled Alison Schofield (1): acpi/hmat: Update acpi_hmat_type enum with ACPI_HMAT_TYPE_PROXIMITY Andi Kleen (3): Intel: perf/x86/intel: Extract memory code PEBS parser for reuse Intel: perf/x86/lbr: Avoid reading the LBRs when adaptive PEBS handles them Intel: perf tools x86: Add support for recording and printing XMM registers Andrew Murray (2): Intel: perf/core: Add function to test for event exclusion flags Intel: perf/core: Add PERF_PMU_CAP_NO_EXCLUDE for exclusion incapable PMUs Andy Lutomirski (1): x86/traps: Stop using ist_enter/exit() in do_int3() Andy Shevchenko (4): Intel:PCI/AER: Use match_string() helper to simplify the code Intel:PCI/AER: Use for_each_set_bit() to simplify code Intel:PCI/AER: Fix kernel-doc warnings intel_th: pti: Use sysfs_match_string() helper Aneesh Kumar K.V (1): drivers/dax: Allow to include DEV_DAX_PMEM as builtin Arnaldo Carvalho de Melo (3): Intel: perf record: Fix suggestion to get list of registers usable with --user-regs and --intr-regs Intel: perf parse-regs: Improve error output when faced with unknown register name tools x86 uapi asm: Sync the pt_regs.h copy with the kernel sources Bharat Kumar Gogada (1): Intel:PCI: Enable SERR# forwarding for all bridges Bjorn Helgaas (5): PCI: Add pci_speed_string() PCI: Use pci_speed_string() for all PCI/PCI-X/PCIe strings Intel:PCI/ASPM: Save LTR Capability for suspend/resume Intel:PCI/portdrv: Use conventional Device ID table formatting Intel:PCI: Use dev_printk() when possible Chen Yu (3): Intel: intel_idle: Customize IceLake server support tools/power turbostat: Support Ice Lake server intel_idle: Fix max_cstate for processor models without C-state tables Colin Ian King (2): intel_th: msu: Fix missing allocation failure check on a kstrndup intel_th: msu: Fix overflow in shift of an unsigned int Dan Carpenter (2): tools/power/x86/intel-speed-select: Fix a read overflow in isst_set_tdp_level_msr() node: fix device cleanups in error handling code Dan Williams (11): Intel: device-dax: Kill dax_region ida Intel: device-dax: Kill dax_region base Intel: device-dax: Remove multi-resource infrastructure Intel: device-dax: Start defining a dax bus model Intel: device-dax: Introduce bus + driver model Intel: device-dax: Move resource pinning+mapping into the common driver Intel: device-dax: Add support for a dax override driver Intel: device-dax: Add /sys/class/dax backwards compatibility Intel: acpi/nfit, device-dax: Identify differentiated memory with a unique numa-node Intel: device-dax: Auto-bind device after successful new_id Intel: device-dax: Add a 'target_node' attribute Dave Hansen (4): Intel: mm/resource: Move HMM pr_debug() deeper into resource code Intel: mm/memory-hotplug: Allow memory resources to be children mm/resource: Let walk_system_ram_range() search child resources Intel: device-dax: "Hotplug" persistent memory for use like normal RAM Dave Jiang (7): Intel: dmaengine: ioatdma: Add Snow Ridge ioatdma device id Intel: dmaengine: ioatdma: disable DCA enabling on IOATDMA v3.4 Intel: dmaengine: ioatdma: add descriptor pre-fetch support for v3.4 Intel: dmaengine: ioatdma: support latency tolerance report (LTR) for v3.4 Intel: ntb: intel: Add Icelake (gen4) support for Intel NTB Intel: ntb: intel: fix static declaration Intel: ntb: intel: add hw workaround for NTB BAR alignment Dinghao Liu (1): ntb: intel: Fix memleak in intel_ntb_pci_probe Dongdong Liu (1): PCI/AER: Initialize aer_fifo Erik Schmauss (1): Intel: ACPICA: ACPI 6.3: HMAT updates Felipe Balbi (1): Intel: PCI: Add support for Immediate Readiness Frederick Lawler (1): Intel:PCI/DPC: Log messages with pci_dev, not pcie_device Guoqing Jiang (11): Intel: intel_idle: Use ACPI _CST on server systems Intel: perf/x86/intel: Add more Icelake CPUIDs Intel:PCI/AER: Use threaded IRQ for bottom half Intel:PCI/AER: Use managed resource allocations Intel:PCI/AER: Log messages with pci_dev, not pcie_device Intel:PCI: pciehp: Disable in-band presence detect when possible perf/x86/intel: Export mem events only if there's PEBS support Intel: perf/x86: Use the new pmu::update_attrs attribute group intel: perf/x86/intel: Use update attributes for skylake format Intel: perf/x86/amd: Constrain Large Increment per Cycle events Intel: perf/x86/intel: Support TopDown metrics on Ice Lake Gustavo A. R. Silva (1): intel_th: Mark expected switch fall-throughs Gustavo Pimentel (1): PCI: Decode PCIe 32 GT/s link speed Honghui Zhang (1): Intel:PCI/portdrv: Support PCIe services on subtractive decode bridges Jann Horn (2): Intel: x86/extable: Introduce _ASM_EXTABLE_UA for uaccess fixups Intel: x86/insn-eval: Add support for 64-bit kernel mode Jay Fang (1): PCI/PME: Fix kernel-doc of pcie_pme_resume() and pcie_pme_remove() Jiri Olsa (7): Intel: sysfs: Add sysfs_update_groups function Intel: perf/core: Add attr_groups_update into struct pmu Intel: perf/x86: Get rid of x86_pmu::event_attrs Intel: perf/x86: Add is_visible attribute_group callback for base events Intel: perf/x86: Use update attribute groups for caps Intel: perf/x86: Use update attribute groups for extra format Intel: perf/x86: Use update attribute groups for default attributes Jonathan Corbet (1): docs: fix numaperf.rst and add it to the doc tree Kan Liang (39): perf/x86/intel: Add Icelake support perf/x86/intel: Add Tremont core PMU support Intel: perf/x86: Support outputting XMM registers Intel: perf/x86/intel/ds: Extract code of event update in short period Intel: perf/x86/intel: Support adaptive PEBS v4 Intel: perf/x86/intel/uncore: Add Intel Icelake uncore support Intel: perf parse-regs: Split parse_regs Intel: perf parse-regs: Add generic support for arch__intr/user_reg_mask() Intel: perf regs x86: Add X86 specific arch__intr_reg_mask() Intel: perf/x86: Disable extended registers for non-supported PMUs Intel: perf/x86/regs: Check reserved bits Intel: perf/x86: Clean up PEBS_XMM_REGS Intel: perf/x86: Remove pmu->pebs_no_xmm_regs Intel: perf/x86/regs: Use PERF_REG_EXTENDED_MASK Intel: perf/x86/intel/uncore: Add uncore support for Snow Ridge server Intel: perf/x86/intel/uncore: Factor out box ref/unref functions Intel: perf/x86/intel/uncore: Support MMIO type uncore blocks Intel: perf/x86/intel/uncore: Clean up client IMC Intel: perf/x86/intel/uncore: Add IMC uncore support for Snow Ridge Intel: perf/x86/intel/uncore: Factor out __snr_uncore_mmio_init_box Intel: perf/x86/intel/uncore: Add box_offsets for free-running counters Intel: perf/x86/intel/uncore: Add Ice Lake server uncore support Intel: perf/x86/intel: Factor out common code of PMI handler Intel: perf/x86/intel: Fix SLOTS PEBS event constraint Intel: perf/x86: Use event_base_rdpmc for the RDPMC userspace support Intel: perf/x86/intel: Name the global status bit in NMI handler Intel: perf/x86/intel: Introduce the fourth fixed counter Intel: perf/x86/intel: Move BTS index to 47 Intel: perf/x86/intel: Fix the name of perf METRICS Intel: perf/x86/intel: Use switch in intel_pmu_disable/enable_event Intel: perf/core: Add a new PERF_EV_CAP_SIBLING event capability Intel: perf/x86/intel: Generic support for hardware TopDown metrics Intel: perf/x86: Add a macro for RDPMC offset of fixed counters Intel: perf/x86/intel: Support per-thread RDPMC TopDown metrics Intel: perf/x86/intel: Check perf metrics feature for each CPU perf/x86/intel/uncore: Fix missing marker for snr_uncore_imc_freerunning_events perf/x86/intel/uncore: Reduce the number of CBOX counters perf/x86/intel/uncore: Fix the scale of the IMC free-running events perf/x86/intel/uncore: Fix M2M event umask for Ice Lake server Keith Busch (23): PCI/AER: Remove error source from AER struct aer_rpc PCI/AER: Use kfifo for tracking events instead of reimplementing it Intel: acpi: Create subtable parsing infrastructure Intel: acpi: Add HMAT to generic parsing tables Intel: acpi/hmat: Parse and report heterogeneous memory node: Link memory nodes to their compute nodes Intel: node: Add heterogenous memory access attributes Intel: node: Add memory-side caching attributes Intel: acpi/hmat: Register processor domain to its memory Intel: acpi/hmat: Register performance attributes Intel: acpi/hmat: Register memory side cache attributes Intel: doc/mm: New documentation for memory performance PCI: portdrv: Restore PCI config state on slot reset Intel:PCI/DPC: Save and restore config state PCI/ERR: Handle fatal error recovery PCI/ERR: Simplify broadcast callouts Intel:PCI/ERR: Always report current recovery status for udev PCI: Unify device inaccessible Intel:PCI: Make link active reporting detection generic Intel:PCI/AER: Remove unused aer_error_resume() Intel:PCI/AER: Use kfifo_in_spinlocked() to insert locked elements Intel:PCI/AER: Reuse existing pcie_port_find_device() interface Intel:PCI/AER: Abstract AER interrupt handling Kim Phillips (2): perf/x86/amd: Add support for Large Increment per Cycle Events perf/x86/amd: Fix sampling Large Increment per Cycle events Kuppuswamy Sathyanarayanan (2): PCI/ERR: Combine pci_channel_io_frozen cases PCI/ERR: Update error status after reset_link() Len Brown (9): Intel: topology: Simplify cputopology.txt formatting and wording Intel: x86/topology: Add CPUID.1F multi-die/package support Intel: x86/topology: Create topology_max_die_per_package() Intel: cpu/topology: Export die_id Intel: x86/topology: Define topology_die_id() Intel: x86/topology: Define topology_logical_die_id() tools/power turbostat: reduce debug output tools/power turbostat: consolidate duplicate model numbers tools/power turbostat: Fix Haswell Core systems Leonid Ravich (1): Intel: NTB: add new parameter to peer_db_addr() db_bit and db_data Like Xu (4): perf/x86/core: Refactor hw->idx checks and cleanup Intel: perf/x86/lbr: Add interface to get LBR information Intel: perf/x86: Add constraint to create guest LBR event without hw counter Intel: perf/x86: Keep LBR records unchanged in host context for guest usage Lukas Wunner (1): PCI: Simplify disconnected marking Mel Gorman (1): intel_idle: Ignore _CST if control cannot be taken from the platform Mika Westerberg (2): Intel:PCI: Make pcie_downstream_port() available outside of access.c Intel:PCI: Get rid of dev->has_secondary_link flag Mohan Kumar (2): Intel:PCI: Replace printk(KERN_INFO) with pr_info(), etc Intel:PCI: Replace dev_printk(KERN_DEBUG) with dev_info(), etc Olof Johansson (1): Intel:PCI/DPC: Add "pcie_ports=dpc-native" to allow DPC without AER control Otto Sabart (1): doc: trace: fix reference to cpuidle documentation file Patel, Mayurkumar (1): Intel:PCI/AER: Save AER Capability for suspend/resume Pavel Tatashin (1): device-dax: fix memory and resource leak if hotplug fails Peter Zijlstra (4): perf/x86: Support constraint ranges Intel: perf/x86: Fix n_metric for cancelled txn Intel: x86/uaccess: Move copy_user_handle_tail() into asm Intel: hardirq/nmi: Allow nested nmi_enter() Qian Cai (2): acpi/hmat: fix memory leaks in hmat_init() acpi/hmat: fix an uninitialized memory_target Qiuxu Zhuo (9): Intel: EDAC, skx_common: Separate common code out from skx_edac EDAC, skx_edac: Delete duplicated code Intel: EDAC, i10nm: Add a driver for Intel 10nm server processors Intel: EDAC, skx, i10nm: Make skx_common.c a pure library Intel: EDAC, i10nm: Add Intel additional Ice-Lake support Intel: EDAC, i10nm: Check ECC enabling status per channel Intel: EDAC, skx, i10nm: Fix source ID register offset Intel: EDAC, {skx,i10nm}: Make some configurations CPU model specific Intel: EDAC/i10nm: Update driver to support different bus number config register offsets Rafael J. Wysocki (12): Intel: ACPI: processor: Export function to claim _CST control Intel: ACPI: processor: Introduce acpi_processor_evaluate_cst() Intel: ACPI: processor: Clean up acpi_processor_evaluate_cst() Intel: ACPI: processor: Export acpi_processor_evaluate_cst() Intel: intel_idle: Refactor intel_idle_cpuidle_driver_init() Intel: intel_idle: Use ACPI _CST for processor models without C-state tables Intel: Documentation: admin-guide: PM: Add cpuidle document Intel: cpuidle: Allow idle states to be disabled by default Intel: intel_idle: Allow ACPI _CST to be used for selected known processors Intel: intel_idle: Add module parameter to prevent ACPI _CST from being used Intel: ACPI: processor: Make ACPI_PROCESSOR_CSTATE depend on ACPI_PROCESSOR Intel: Documentation: admin-guide: PM: Add intel_idle document Shaokun Zhang (1): intel_th: msu: Fix unused variable warning on arm64 platform Srinivas Pandruvada (13): Intel: platform/x86: ISST: Update ioctl-number.txt for Intel Speed Select interface Intel: platform/x86: ISST: Add common API to register and handle ioctls Intel: platform/x86: ISST: Store per CPU information Intel: platform/x86: ISST: Add IOCTL to Translate Linux logical CPU to PUNIT CPU number Intel: platform/x86: ISST: Add Intel Speed Select mmio interface Intel: platform/x86: ISST: Add Intel Speed Select mailbox interface via PCI Intel: platform/x86: ISST: Add Intel Speed Select mailbox interface via MSRs Intel: platform/x86: ISST: Add Intel Speed Select PUNIT MSR interface Intel: platform/x86: ISST: Restore state on resume Intel: tools/power/x86: A tool to validate Intel Speed Select commands Intel: ICX: platform/x86: ISST: Allow additional core-power mailbox commands Intel: ICX: platform/x86: ISST: Fix wrong unregister type Intel: platform/x86: ISST: Increase timeout Stephen Rothwell (1): intel_rapl: need linux/cpuhotplug.h for enum cpuhp_state Stuart Hayes (1): PCI: pciehp: Add DMI table for in-band presence detection disabled Subbaraya Sundeep (2): Intel:PCI: Assign bus numbers present in EA capability for bridges PCI: Do not use bus number zero from EA capability Sumeet Pawnikar (1): powercap: RAPL: remove unused local MSR define Thomas Gleixner (2): genirq: Provide interrupt injection mechanism Intel:PCI/AER: Fix the broken interrupt injection Tony Luck (5): Intel: EDAC, skx_common: Add code to recognise new compound error code Intel: EDAC, skx_common: Refactor so that we initialize "dev" in result of adxl decode. Intel: EDAC, skx: Retrieve and print retry_rd_err_log registers MAINTAINERS: Update entry for EDAC-SKYLAKE MAINTAINERS: Add entry for EDAC-I10NM Vishal Verma (1): Intel: device-dax: Add a 'modalias' attribute to DAX 'bus' devices Wang Hai (1): device-dax/core: Fix memory leak when rmmod dax.ko Wei Li (1): kabi: Fix "Intel: perf/core: Add attr_groups_update into struct pmu" Wei Wang (1): Intel: perf/x86: Fix variable types for LBR registers Wei Yongjun (1): intel_th: msu: Fix possible memory leak in mode_store() Yangtao Li (1): Intel: cpuidle: use BIT() for idle state flags and remove CPUIDLE_DRIVER_FLAGS_MASK Yanjiang Jin (1): Intel:PCI/AER: Queue one GHES event, not several uninitialized ones Yicong Yang (3): PCI/AER: Log which device prevents error recovery PCI: Add 32 GT/s decoding in some macros PCI: Add PCIE_LNKCAP2_SLS2SPEED() macro YueHaibing (2): Intel:PCI/ERR: Remove duplicated include from err.c intel_th: msu: Remove set but not used variable 'last' Yunying Sun (1): Intel: perf/x86/intel: Fix invalid Bit 13 for Icelake MSR_OFFCORE_RSP_x register Zhang Rui (18): Intel: powercap/intel_rapl: Simplify rapl_find_package() Intel: powercap/intel_rapl: Support multi-die/package Intel: powercap/intel_rapl: Update RAPL domain name and debug messages Intel: intel_rapl: use reg instead of msr Intel: intel_rapl: remove hardcoded register index Intel: intel_rapl: introduce intel_rapl.h Intel: intel_rapl: introduce struct rapl_if_private Intel: intel_rapl: abstract register address Intel: intel_rapl: abstract register access operations Intel: intel_rapl: cleanup some functions Intel: intel_rapl: cleanup hardcoded MSR access intel_rapl: abstract RAPL common code Intel: intel_rapl: support 64 bit register Intel: intel_rapl: support two power limits for every RAPL domain Intel: intel_rapl: Fix module autoloading issue Intel: powercap/intel_rapl: add support for IceLake desktop Intel: powercap/intel_rapl: add support for ICX Intel: powercap/intel_rapl: add support for ICX-D Zheng Zengkai (9): irqchip: phytium-2500: Fix compilation issues hulk_defconfig: Enable some Icelake support configs openeuler_defconfig: Enable some Icelake support configs hulk_defconfig: Adjust some configs for Intel icelake support openeuler_defconfig: Adjust some configs for Intel icelake support kabi: Fix "PCI: Decode PCIe 32 GT/s link speed" PCI: kabi: fix kabi broken for struct pci_dev kabi: Fix "perf/x86/intel: Support per-thread RDPMC TopDown metrics" x86: Fix kabi broken for struct cpuinfo_x86 Documentation/ABI/obsolete/sysfs-class-dax | 22 + Documentation/ABI/stable/sysfs-devices-node | 87 +- .../testing/sysfs-bus-intel_th-devices-msc | 11 +- .../ABI/testing/sysfs-devices-system-cpu | 6 + Documentation/PCI/pci-error-recovery.txt | 35 +- .../admin-guide/kernel-parameters.txt | 2 + Documentation/admin-guide/mm/index.rst | 1 + Documentation/admin-guide/mm/numaperf.rst | 169 ++ Documentation/admin-guide/pm/intel_idle.rst | 246 +++ .../admin-guide/pm/working-state.rst | 2 + Documentation/cpuidle/core.txt | 23 - Documentation/cpuidle/sysfs.txt | 98 - Documentation/cputopology.txt | 55 +- Documentation/ioctl/ioctl-number.txt | 1 + Documentation/trace/coresight-cpu-debug.txt | 2 +- Documentation/x86/topology.txt | 4 + MAINTAINERS | 10 +- arch/arm64/configs/hulk_defconfig | 2 + arch/arm64/configs/openeuler_defconfig | 2 + arch/arm64/kernel/acpi_numa.c | 2 +- arch/arm64/kernel/smp.c | 4 +- arch/ia64/kernel/acpi.c | 14 +- arch/x86/configs/hulk_defconfig | 18 +- arch/x86/configs/openeuler_defconfig | 18 +- arch/x86/events/amd/core.c | 107 +- arch/x86/events/core.c | 315 ++-- arch/x86/events/intel/core.c | 929 ++++++++-- arch/x86/events/intel/ds.c | 501 ++++- arch/x86/events/intel/lbr.c | 84 +- arch/x86/events/intel/pt.c | 3 +- arch/x86/events/intel/uncore.c | 137 +- arch/x86/events/intel/uncore.h | 40 +- arch/x86/events/intel/uncore_snb.c | 107 +- arch/x86/events/intel/uncore_snbep.c | 1119 ++++++++++++ arch/x86/events/perf_event.h | 160 +- arch/x86/include/asm/asm.h | 31 +- arch/x86/include/asm/futex.h | 6 +- arch/x86/include/asm/intel_ds.h | 2 +- arch/x86/include/asm/msr-index.h | 4 + arch/x86/include/asm/perf_event.h | 181 +- arch/x86/include/asm/processor.h | 6 +- arch/x86/include/asm/ptrace.h | 13 + arch/x86/include/asm/topology.h | 16 + arch/x86/include/asm/uaccess.h | 16 +- arch/x86/include/asm/uaccess_64.h | 3 - arch/x86/include/uapi/asm/perf_regs.h | 26 +- arch/x86/kernel/acpi/boot.c | 36 +- arch/x86/kernel/cpu/common.c | 1 + arch/x86/kernel/cpu/topology.c | 88 +- arch/x86/kernel/perf_regs.c | 28 +- arch/x86/kernel/smpboot.c | 47 + arch/x86/kernel/traps.c | 21 +- arch/x86/lib/checksum_32.S | 4 +- arch/x86/lib/copy_user_64.S | 138 +- arch/x86/lib/csum-copy_64.S | 8 +- arch/x86/lib/getuser.S | 12 +- arch/x86/lib/insn-eval.c | 26 +- arch/x86/lib/putuser.S | 10 +- arch/x86/lib/usercopy_32.c | 126 +- arch/x86/lib/usercopy_64.c | 24 +- arch/x86/mm/extable.c | 8 + drivers/acpi/Kconfig | 2 + drivers/acpi/Makefile | 1 + drivers/acpi/acpi_processor.c | 182 ++ drivers/acpi/hmat/Kconfig | 11 + drivers/acpi/hmat/Makefile | 1 + drivers/acpi/hmat/hmat.c | 666 +++++++ drivers/acpi/nfit/core.c | 8 +- drivers/acpi/numa.c | 17 +- drivers/acpi/processor_idle.c | 174 +- drivers/acpi/scan.c | 4 +- drivers/acpi/tables.c | 76 +- drivers/base/Kconfig | 8 + drivers/base/memory.c | 1 + drivers/base/node.c | 350 +++- drivers/base/topology.c | 4 + drivers/cpuidle/cpuidle.c | 7 +- drivers/cpuidle/sysfs.c | 10 + drivers/dax/Kconfig | 27 +- drivers/dax/Makefile | 6 +- drivers/dax/bus.c | 503 ++++++ drivers/dax/bus.h | 61 + drivers/dax/dax-private.h | 34 +- drivers/dax/dax.h | 18 - drivers/dax/device-dax.h | 25 - drivers/dax/device.c | 363 +--- drivers/dax/kmem.c | 111 ++ drivers/dax/pmem.c | 153 -- drivers/dax/pmem/Makefile | 7 + drivers/dax/pmem/compat.c | 73 + drivers/dax/pmem/core.c | 71 + drivers/dax/pmem/pmem.c | 40 + drivers/dax/super.c | 42 +- drivers/dma/ioat/dma.c | 12 + drivers/dma/ioat/dma.h | 2 +- drivers/dma/ioat/hw.h | 3 + drivers/dma/ioat/init.c | 40 +- drivers/dma/ioat/registers.h | 24 + drivers/edac/Kconfig | 12 + drivers/edac/Makefile | 7 +- drivers/edac/i10nm_base.c | 344 ++++ drivers/edac/skx_base.c | 752 ++++++++ drivers/edac/skx_common.c | 657 +++++++ drivers/edac/skx_common.h | 153 ++ drivers/edac/skx_edac.c | 1357 -------------- drivers/hwtracing/intel_th/Makefile | 3 + drivers/hwtracing/intel_th/acpi.c | 10 +- drivers/hwtracing/intel_th/core.c | 146 +- drivers/hwtracing/intel_th/gth.c | 130 +- drivers/hwtracing/intel_th/gth.h | 19 + drivers/hwtracing/intel_th/intel_th.h | 32 +- drivers/hwtracing/intel_th/msu-sink.c | 116 ++ drivers/hwtracing/intel_th/msu.c | 832 +++++++-- drivers/hwtracing/intel_th/msu.h | 28 +- drivers/hwtracing/intel_th/pci.c | 32 +- drivers/hwtracing/intel_th/pti.c | 16 +- drivers/hwtracing/intel_th/sth.c | 4 + drivers/idle/intel_idle.c | 388 +++- drivers/irqchip/irq-gic-phytium-2500-its.c | 6 +- drivers/irqchip/irq-gic-phytium-2500.c | 10 +- drivers/irqchip/irq-gic-v2m.c | 2 +- drivers/irqchip/irq-gic-v3-its-pci-msi.c | 2 +- drivers/irqchip/irq-gic-v3-its-platform-msi.c | 2 +- drivers/irqchip/irq-gic-v3-its.c | 6 +- drivers/irqchip/irq-gic-v3.c | 10 +- drivers/irqchip/irq-gic.c | 4 +- drivers/mailbox/pcc.c | 2 +- drivers/ntb/hw/intel/Makefile | 2 +- drivers/ntb/hw/intel/ntb_hw_gen1.c | 72 +- drivers/ntb/hw/intel/ntb_hw_gen1.h | 6 +- drivers/ntb/hw/intel/ntb_hw_gen3.c | 44 +- drivers/ntb/hw/intel/ntb_hw_gen3.h | 8 + drivers/ntb/hw/intel/ntb_hw_gen4.c | 552 ++++++ drivers/ntb/hw/intel/ntb_hw_gen4.h | 100 + drivers/ntb/hw/intel/ntb_hw_intel.h | 12 + drivers/ntb/hw/mscc/ntb_hw_switchtec.c | 9 +- drivers/nvdimm/e820.c | 1 + drivers/nvdimm/nd.h | 2 +- drivers/nvdimm/of_pmem.c | 1 + drivers/nvdimm/region_devs.c | 1 + drivers/pci/access.c | 11 +- drivers/pci/bus.c | 5 +- drivers/pci/hotplug/pciehp.h | 1 + drivers/pci/hotplug/pciehp_hpc.c | 75 +- drivers/pci/hotplug/pciehp_pci.c | 9 +- drivers/pci/pci-acpi.c | 11 +- drivers/pci/pci-stub.c | 10 +- drivers/pci/pci-sysfs.c | 27 +- drivers/pci/pci.c | 143 +- drivers/pci/pci.h | 101 +- drivers/pci/pcie/Kconfig | 2 +- drivers/pci/pcie/aer.c | 340 ++-- drivers/pci/pcie/aer_inject.c | 48 +- drivers/pci/pcie/aspm.c | 8 +- drivers/pci/pcie/dpc.c | 106 +- drivers/pci/pcie/err.c | 210 +-- drivers/pci/pcie/pme.c | 4 +- drivers/pci/pcie/portdrv.h | 6 +- drivers/pci/pcie/portdrv_core.c | 12 +- drivers/pci/pcie/portdrv_pci.c | 24 +- drivers/pci/probe.c | 193 +- drivers/pci/quirks.c | 15 +- drivers/pci/setup-bus.c | 30 +- drivers/pci/slot.c | 39 +- drivers/pci/vc.c | 4 +- drivers/pci/xen-pcifront.c | 7 +- drivers/platform/x86/Kconfig | 2 + drivers/platform/x86/Makefile | 1 + .../x86/intel_speed_select_if/Kconfig | 17 + .../x86/intel_speed_select_if/Makefile | 10 + .../intel_speed_select_if/isst_if_common.c | 675 +++++++ .../intel_speed_select_if/isst_if_common.h | 69 + .../intel_speed_select_if/isst_if_mbox_msr.c | 216 +++ .../intel_speed_select_if/isst_if_mbox_pci.c | 213 +++ .../x86/intel_speed_select_if/isst_if_mmio.c | 180 ++ drivers/powercap/Kconfig | 11 +- drivers/powercap/Makefile | 4 +- .../{intel_rapl.c => intel_rapl_common.c} | 857 ++++----- drivers/powercap/intel_rapl_msr.c | 183 ++ fs/sysfs/group.c | 54 +- include/acpi/actbl1.h | 10 +- include/linux/acpi.h | 26 +- include/linux/aer.h | 4 + include/linux/cpuidle.h | 10 +- include/linux/hardirq.h | 5 +- include/linux/intel_rapl.h | 155 ++ include/linux/intel_th.h | 79 + include/linux/interrupt.h | 2 + include/linux/libnvdimm.h | 1 + include/linux/node.h | 71 + include/linux/ntb.h | 10 +- include/linux/pci.h | 15 +- include/linux/perf_event.h | 47 +- include/linux/perf_regs.h | 8 + include/linux/preempt.h | 4 +- include/linux/sysfs.h | 8 + include/linux/topology.h | 3 + include/uapi/linux/isst_if.h | 172 ++ include/uapi/linux/pci_regs.h | 13 + kernel/events/core.c | 90 +- kernel/events/ring_buffer.c | 3 +- kernel/irq/Kconfig | 5 + kernel/irq/chip.c | 2 +- kernel/irq/debugfs.c | 34 +- kernel/irq/internals.h | 2 +- kernel/irq/resend.c | 53 +- kernel/resource.c | 14 +- mm/memory_hotplug.c | 33 +- tools/Makefile | 11 +- tools/arch/x86/include/uapi/asm/perf_regs.h | 26 +- tools/perf/Documentation/perf-record.txt | 3 +- tools/perf/arch/x86/include/perf_regs.h | 25 +- tools/perf/arch/x86/util/perf_regs.c | 44 + tools/perf/builtin-record.c | 4 +- tools/perf/util/parse-regs-options.c | 33 +- tools/perf/util/parse-regs-options.h | 3 +- tools/perf/util/perf_regs.c | 10 + tools/perf/util/perf_regs.h | 3 + tools/power/x86/intel-speed-select/Build | 1 + tools/power/x86/intel-speed-select/Makefile | 56 + .../x86/intel-speed-select/isst-config.c | 1607 +++++++++++++++++ .../power/x86/intel-speed-select/isst-core.c | 721 ++++++++ .../x86/intel-speed-select/isst-display.c | 479 +++++ tools/power/x86/intel-speed-select/isst.h | 231 +++ tools/power/x86/turbostat/turbostat.c | 80 +- tools/testing/nvdimm/Kbuild | 7 +- tools/testing/nvdimm/dax-dev.c | 16 +- 227 files changed, 17781 insertions(+), 4637 deletions(-) create mode 100644 Documentation/ABI/obsolete/sysfs-class-dax create mode 100644 Documentation/admin-guide/mm/numaperf.rst create mode 100644 Documentation/admin-guide/pm/intel_idle.rst delete mode 100644 Documentation/cpuidle/core.txt delete mode 100644 Documentation/cpuidle/sysfs.txt create mode 100644 drivers/acpi/hmat/Kconfig create mode 100644 drivers/acpi/hmat/Makefile create mode 100644 drivers/acpi/hmat/hmat.c create mode 100644 drivers/dax/bus.c create mode 100644 drivers/dax/bus.h delete mode 100644 drivers/dax/dax.h delete mode 100644 drivers/dax/device-dax.h create mode 100644 drivers/dax/kmem.c delete mode 100644 drivers/dax/pmem.c create mode 100644 drivers/dax/pmem/Makefile create mode 100644 drivers/dax/pmem/compat.c create mode 100644 drivers/dax/pmem/core.c create mode 100644 drivers/dax/pmem/pmem.c create mode 100644 drivers/edac/i10nm_base.c create mode 100644 drivers/edac/skx_base.c create mode 100644 drivers/edac/skx_common.c create mode 100644 drivers/edac/skx_common.h delete mode 100644 drivers/edac/skx_edac.c create mode 100644 drivers/hwtracing/intel_th/msu-sink.c create mode 100644 drivers/ntb/hw/intel/ntb_hw_gen4.c create mode 100644 drivers/ntb/hw/intel/ntb_hw_gen4.h create mode 100644 drivers/platform/x86/intel_speed_select_if/Kconfig create mode 100644 drivers/platform/x86/intel_speed_select_if/Makefile create mode 100644 drivers/platform/x86/intel_speed_select_if/isst_if_common.c create mode 100644 drivers/platform/x86/intel_speed_select_if/isst_if_common.h create mode 100644 drivers/platform/x86/intel_speed_select_if/isst_if_mbox_msr.c create mode 100644 drivers/platform/x86/intel_speed_select_if/isst_if_mbox_pci.c create mode 100644 drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c rename drivers/powercap/{intel_rapl.c => intel_rapl_common.c} (61%) create mode 100644 drivers/powercap/intel_rapl_msr.c create mode 100644 include/linux/intel_rapl.h create mode 100644 include/linux/intel_th.h create mode 100644 include/uapi/linux/isst_if.h create mode 100644 tools/power/x86/intel-speed-select/Build create mode 100644 tools/power/x86/intel-speed-select/Makefile create mode 100644 tools/power/x86/intel-speed-select/isst-config.c create mode 100644 tools/power/x86/intel-speed-select/isst-core.c create mode 100644 tools/power/x86/intel-speed-select/isst-display.c create mode 100644 tools/power/x86/intel-speed-select/isst.h -- 2.20.1

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