- Kernel - mailweb.openeuler.org

[PATCH OLK-6.6 0/2] xfs: fix two corruption problems
by Long Li 27 Dec '23

27 Dec '23

This patch set fix two corruption problems: Long Li (1): xfs: shutdown to ensure submits buffers on LSN boundaries yangerkun (1): xfs: shutdown xfs once inode double free fs/xfs/libxfs/xfs_ialloc.c | 6 +++++- fs/xfs/xfs_log_recover.c | 6 +++++- 2 files changed, 10 insertions(+), 2 deletions(-) -- 2.31.1

2 3

[PATCH openEuler-1.0-LTS 0/2] Fix CVE-2023-6546
by Yi Yang 27 Dec '23

27 Dec '23

Fix CVE-2023-6546 Daniel Starke (1): tty: n_gsm: fix restart handling via CLD command Yi Yang (1): tty: n_gsm: fix the UAF caused by race condition in gsm_cleanup_mux drivers/tty/n_gsm.c | 71 ++++++++++++++------------------------------- 1 file changed, 22 insertions(+), 49 deletions(-) -- 2.25.1

2 3

[PATCH openEuler-1.0-LTS 0/2] perf/core: Fix CVE-2023-6931
by Yang Jihong 27 Dec '23

27 Dec '23

Mark Rutland (1): perf: Fix perf_event_validate_size() lockdep splat Peter Zijlstra (1): perf: Fix perf_event_validate_size() kernel/events/core.c | 67 ++++++++++++++++++++++++++++++-------------- 1 file changed, 46 insertions(+), 21 deletions(-) -- 2.34.1

2 3

[PATCH OLK-6.6 v2] openeuler_defconfig: enable CONFIG_UNICODE for x86 and arm64
by Baokun Li 26 Dec '23

26 Dec '23

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I853Y8 -------------------------------- Enable CONFIG_UNICODE on x86 and arm64 by default to support the ext4 casefold feature. Signed-off-by: Baokun Li <libaokun1(a)huawei.com> --- V1->V2: Remove the bugzilla number and just keep the gitee issue link to silence checkpatch warning. arch/arm64/configs/openeuler_defconfig | 2 +- arch/x86/configs/openeuler_defconfig | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 9297e3ca9f92..5f23e68df237 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -7074,7 +7074,7 @@ CONFIG_NLS_MAC_TURKISH=m CONFIG_NLS_UTF8=m CONFIG_NLS_UCS2_UTILS=m # CONFIG_DLM is not set -# CONFIG_UNICODE is not set +CONFIG_UNICODE=y CONFIG_IO_WQ=y # end of File systems diff --git a/arch/x86/configs/openeuler_defconfig b/arch/x86/configs/openeuler_defconfig index c7b4a4b80b66..4323520457a3 100644 --- a/arch/x86/configs/openeuler_defconfig +++ b/arch/x86/configs/openeuler_defconfig @@ -8279,7 +8279,7 @@ CONFIG_NLS_UTF8=m CONFIG_NLS_UCS2_UTILS=m CONFIG_DLM=m CONFIG_DLM_DEBUG=y -# CONFIG_UNICODE is not set +CONFIG_UNICODE=y CONFIG_IO_WQ=y # end of File systems -- 2.31.1

2 1

[PATCH OLK-6.6] openeuler_defconfig: enable CONFIG_UNICODE for x86 and arm64
by Baokun Li 26 Dec '23

26 Dec '23

hulk inclusion category: feature bugzilla: 189255, https://gitee.com/openeuler/kernel/issues/I853Y8 CVE: NA -------------------------------- Enable CONFIG_UNICODE on x86 and arm64 by default to support the ext4 casefold feature. Signed-off-by: Baokun Li <libaokun1(a)huawei.com> --- arch/arm64/configs/openeuler_defconfig | 2 +- arch/x86/configs/openeuler_defconfig | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 9297e3ca9f92..5f23e68df237 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -7074,7 +7074,7 @@ CONFIG_NLS_MAC_TURKISH=m CONFIG_NLS_UTF8=m CONFIG_NLS_UCS2_UTILS=m # CONFIG_DLM is not set -# CONFIG_UNICODE is not set +CONFIG_UNICODE=y CONFIG_IO_WQ=y # end of File systems diff --git a/arch/x86/configs/openeuler_defconfig b/arch/x86/configs/openeuler_defconfig index c7b4a4b80b66..4323520457a3 100644 --- a/arch/x86/configs/openeuler_defconfig +++ b/arch/x86/configs/openeuler_defconfig @@ -8279,7 +8279,7 @@ CONFIG_NLS_UTF8=m CONFIG_NLS_UCS2_UTILS=m CONFIG_DLM=m CONFIG_DLM_DEBUG=y -# CONFIG_UNICODE is not set +CONFIG_UNICODE=y CONFIG_IO_WQ=y # end of File systems -- 2.31.1

2 1

[PATCH OLK-6.6 0/3] memcg: support OOM priority for memcg
by Jinjiang Tu 26 Dec '23

26 Dec '23

Changelog: * rename CONFIG_MEMCG_QOS to CONFIG_MEMCG_OOM_PRIORITY * move CONFIG_MEMCG_OOM_PRIORITY to init/Kconfig * set CONFIG_MEMCG_OOM_PRIORITY default from y to n, and enbale it in openeuler_defconfig * add rcu_read_lock() protection for mem_cgroup_from_task() * Instead of static key, use variable to check if the feature is enabled * use READ_ONCE/WRITE_ONCE protection when read/write oom_prio * cleanup Jing Xiangfeng (3): memcg: support priority for oom memcg: Add sysctl memcg_qos_enable memcg: enable CONFIG_MEMCG_OOM_PRIORITY by default arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + include/linux/memcontrol.h | 26 +++ init/Kconfig | 14 ++ mm/memcontrol.c | 222 +++++++++++++++++++++++++ mm/oom_kill.c | 61 ++++++- 6 files changed, 320 insertions(+), 5 deletions(-) -- 2.25.1

2 4

[PATCH OLK-6.6 v2 0/3] xfs: fix attr inactive problems
by Long Li 26 Dec '23

26 Dec '23

This patch set fix two attr inactive problems: Guo Xuenan (1): xfs: force shutdown xfs when xfs_attr_inactive fails Zhang Yi (2): xfs: factor out __xfs_da3_node_read() xfs: atomic drop extent entries when inactiving attr fs/xfs/libxfs/xfs_da_btree.c | 5 +-- fs/xfs/libxfs/xfs_da_btree.h | 15 ++++++-- fs/xfs/xfs_attr_inactive.c | 66 ++++++++++++++++++++++++++---------- 3 files changed, 65 insertions(+), 21 deletions(-) -- 2.31.1

2 4

[PATCH OLK-6.6 0/2] xfs: fix perag leak when growfs fails
by Long Li 26 Dec '23

26 Dec '23

This patch set fix perag leak problems when growfs fails. Long Li (2): xfs: add lock protection when remove perag from radix tree xfs: fix perag leak when growfs fails fs/xfs/libxfs/xfs_ag.c | 36 ++++++++++++++++++++++++++++-------- fs/xfs/libxfs/xfs_ag.h | 2 ++ fs/xfs/xfs_fsops.c | 5 ++++- 3 files changed, 34 insertions(+), 9 deletions(-) -- 2.31.1

2 3

[PATCH V4 OLK-6.6] iommu/arm-smmu-v3: Add a SYNC command to avoid broken page table prefetch
by Zhang Zekun 26 Dec '23

26 Dec '23

hulk inclusion category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8QSLV CVE: NA ----------------------------------------------- On Hisilicon LINXICORE9100 cores, SMMU pagetable prefetch features may prefetch and use a invalid PTE even the PTE is valid at that time. This will cause the device trigger fake pagefaults. If the SMMU works in terminate mode, transactions which occur fake pagefaults will be aborted, and could result in unexpected errors. To fix this problem, we need to add a SYNC command after smmu has map a iova, then smmu will always try to get the newest PTE. Signed-off-by: Zhang Zekun <zhangzekun11(a)huawei.com> --- v3->v4: Change the config code style. arch/arm64/Kconfig | 13 +++++++++++++ arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/kernel/cpu_errata.c | 14 ++++++++++++++ arch/arm64/tools/cpucaps | 1 + drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 20 ++++++++++++++++++++ 5 files changed, 49 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 2aca373a7038..42079bfdf40a 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1180,6 +1180,19 @@ config HISILICON_ERRATUM_1980005 If unsure, say N. +config HISILICON_ERRATUM_162100602 + bool "Hisilicon erratum 162100602" + depends on ARM_SMMU_V3 + default y + help + On Hisilicon LINXICORE9100 cores, SMMU pagetable prefetch features may + prefetch and use a invalid PTE even the PTE is valid at that time. This + will cause the device trigger fake pagefaults. If the SMMU works in + terminate mode, transactions which occur fake pagefaults will be aborted, + and could result in unexpected errors. + + If unsure, say Y. + config QCOM_FALKOR_ERRATUM_1003 bool "Falkor E1003: Incorrect translation due to ASID change" default y diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 33ba39711884..98fa4d2f3b13 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -399,6 +399,7 @@ CONFIG_CAVIUM_TX2_ERRATUM_219=y CONFIG_FUJITSU_ERRATUM_010001=y CONFIG_HISILICON_ERRATUM_161600802=y CONFIG_HISILICON_ERRATUM_162100125=y +CONFIG_HISILICON_ERRATUM_162100602=y CONFIG_QCOM_FALKOR_ERRATUM_1003=y CONFIG_QCOM_FALKOR_ERRATUM_1009=y CONFIG_QCOM_QDF2400_ERRATUM_0065=y diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index a686a96d966a..c569e6c0ac07 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -360,6 +360,13 @@ static const struct midr_range hisilicon_erratum_162100125_cpus[] = { }; #endif +#ifdef CONFIG_HISILICON_ERRATUM_162100602 +static const struct midr_range hisilicon_erratum_162100602_cpus[] = { + MIDR_REV(MIDR_HISI_LINXICORE9100, 0, 0), + {}, +}; +#endif + #ifdef CONFIG_QCOM_FALKOR_ERRATUM_1003 static const struct arm64_cpu_capabilities qcom_erratum_1003_list[] = { { @@ -591,6 +598,13 @@ const struct arm64_cpu_capabilities arm64_errata[] = { ERRATA_MIDR_RANGE_LIST(hisilicon_erratum_162100125_cpus), }, #endif +#ifdef CONFIG_HISILICON_ERRATUM_162100602 + { + .desc = "Hisilicon erratum 162100602", + .capability = ARM64_WORKAROUND_HISILICON_ERRATUM_162100602, + ERRATA_MIDR_RANGE_LIST(hisilicon_erratum_162100602_cpus), + }, +#endif #ifdef CONFIG_HISILICON_ERRATUM_1980005 { .desc = "Hisilicon erratum 1980005 (IDC)", diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps index 0b62edb91876..569ecec76c16 100644 --- a/arch/arm64/tools/cpucaps +++ b/arch/arm64/tools/cpucaps @@ -103,3 +103,4 @@ WORKAROUND_SPECULATIVE_AT WORKAROUND_HISILICON_ERRATUM_162100125 WORKAROUND_HISI_HIP08_RU_PREFETCH WORKAROUND_HISILICON_1980005 +WORKAROUND_HISILICON_ERRATUM_162100602 diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index 5055a66644af..d0422bb13724 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2528,6 +2528,23 @@ static void arm_smmu_iotlb_sync(struct iommu_domain *domain, gather->pgsize, true, smmu_domain); } +#ifdef CONFIG_HISILICON_ERRATUM_162100602 +static void arm_smmu_iotlb_sync_map(struct iommu_domain *domain, + unsigned long iova, size_t size) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + size_t granule_size; + + if (!cpus_have_const_cap(ARM64_WORKAROUND_HISILICON_ERRATUM_162100602)) + return; + + granule_size = 1 << __ffs(smmu_domain->domain.pgsize_bitmap); + + /* Add a SYNC command to sync io-pgtale to avoid errors in pgtable prefetch*/ + arm_smmu_tlb_inv_range_domain(iova, granule_size, granule_size, true, smmu_domain); +} +#endif + static phys_addr_t arm_smmu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova) { @@ -2883,6 +2900,9 @@ static struct iommu_ops arm_smmu_ops = { .unmap_pages = arm_smmu_unmap_pages, .flush_iotlb_all = arm_smmu_flush_iotlb_all, .iotlb_sync = arm_smmu_iotlb_sync, +#ifdef CONFIG_HISILICON_ERRATUM_162100602 + .iotlb_sync_map = arm_smmu_iotlb_sync_map, +#endif .iova_to_phys = arm_smmu_iova_to_phys, .enable_nesting = arm_smmu_enable_nesting, .free = arm_smmu_domain_free, -- 2.17.1

2 1

[PATCH OLK-6.6 0/7] arm64: Add framework to turn IPI as NMI
by Liao Chen 26 Dec '23

26 Dec '23

Config Dependencies: CONFIG_PSEUDO_NMI=y CONFIG_LOCKUP_DETECTOR=y CONFIG_SOFTLOCKUP_DETECTOR=y CONFIG_LKDTM=y CONFIG_HAVE_ARCH_KGDB=y CONFIG_KGDB=y CONFIG_KGDB_HONOUR_BLOCKLIST=y CONFIG_KGDB_SERIAL_CONSOLE=y CONFIG_KGDB_KDB=y Sumit Garg (7): arm64: Add framework to turn IPI as NMI irqchip/gic-v3: Enable support for SGIs to act as NMIs arm64: smp: Assign and setup an IPI as NMI nmi: backtrace: Allow runtime arch specific override arm64: ipi_nmi: Add support for NMI backtrace kgdb: Expose default CPUs roundup fallback mechanism arm64: kgdb: Roundup cpus using IPI as NMI arch/arm/include/asm/irq.h | 2 +- arch/arm/kernel/smp.c | 3 +- arch/arm64/include/asm/irq.h | 6 +++ arch/arm64/include/asm/nmi.h | 17 +++++++ arch/arm64/kernel/Makefile | 2 +- arch/arm64/kernel/ipi_nmi.c | 84 ++++++++++++++++++++++++++++++++ arch/arm64/kernel/kgdb.c | 18 +++++++ arch/arm64/kernel/smp.c | 8 +++ arch/mips/include/asm/irq.h | 2 +- arch/mips/kernel/process.c | 3 +- arch/powerpc/include/asm/irq.h | 2 +- arch/powerpc/include/asm/nmi.h | 6 +++ arch/powerpc/kernel/stacktrace.c | 3 +- arch/sparc/include/asm/irq_64.h | 2 +- arch/sparc/kernel/process_64.c | 4 +- arch/x86/include/asm/irq.h | 2 +- arch/x86/kernel/apic/hw_nmi.c | 3 +- drivers/irqchip/irq-gic-v3.c | 29 ++++++++--- include/linux/kgdb.h | 12 +++++ include/linux/nmi.h | 12 ++--- kernel/debug/debug_core.c | 8 ++- 21 files changed, 200 insertions(+), 28 deletions(-) create mode 100644 arch/arm64/include/asm/nmi.h create mode 100644 arch/arm64/kernel/ipi_nmi.c -- 2.34.1

2 8

[PATCH OLK-6.6 0/2] arm64: Add config switch and kernel parameter for
by Zheng Zengkai 26 Dec '23

26 Dec '23

Some features depend on cpu0. Cpu0 offline may cause some problems or malfunctions. Known dependency may be: MegaRAID Tri-Mode SAS3508 may block the reboot process after offline CPU0. Add config switch and kernel parameter for CPU0 hotplug to avoid these issues for arm64 platform. Zheng Zengkai (2): arm64: Add config switch and kernel parameter for CPU0 hotplug config: disable config ARM64_BOOTPARAM_HOTPLUG_CPU0 by default .../admin-guide/kernel-parameters.txt | 8 ++++++ arch/arm64/Kconfig | 28 +++++++++++++++++++ arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/kernel/setup.c | 21 ++++++++++++-- 4 files changed, 56 insertions(+), 2 deletions(-) -- 2.20.1

2 3

[PATCH OLK-6.6 0/7] Support nokaslr memmap parameter for kaslr collision
by felix 26 Dec '23

26 Dec '23

From: Felix Fu <fuzhen5(a)huawei.com> Felix Fu (7): kaslr: add nokaslr memory region Kconfig support efi/libstub: arm64: Add kaslr skip memmap kconfig support efi/libstub: arm64: support strchr function for EFI stub efi/libstub: add arm64 kaslr memory region avoid support efi/libstub: arm64: Add macro isolation memmap detection code efi/libstub: add arm64 nokaslr memory regions x86/boot: add x86 nokaslr memory regions arch/arm64/Kconfig | 12 ++ arch/x86/boot/compressed/kaslr.c | 41 +++++ drivers/firmware/efi/libstub/arm64-stub.c | 173 ++++++++++++++++++ .../firmware/efi/libstub/efi-stub-helper.c | 11 +- drivers/firmware/efi/libstub/efistub.h | 14 ++ drivers/firmware/efi/libstub/randomalloc.c | 11 +- drivers/firmware/efi/libstub/string.c | 19 ++ init/Kconfig | 8 + 8 files changed, 286 insertions(+), 3 deletions(-) -- 2.34.1

1 8

[PATCH OLK-5.10 0/2] CVE-2023-35827 patchset
by Ziyang Xuan 26 Dec '23

26 Dec '23

CVE-2023-35827 patchset. Yoshihiro Shimoda (2): ravb: Fix use-after-free issue in ravb_tx_timeout_work() ravb: Fix races between ravb_tx_timeout_work() and net related ops drivers/net/ethernet/renesas/ravb_main.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) -- 2.25.1

2 3

[PATCH OLK-6.6] block: support to account io_ticks precisely
by Yu Kuai 26 Dec '23

26 Dec '23

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8RIME CVE: NA ----------------------------------------------- Currently, io_ticks is accounted based on sampling, specifically update_io_ticks() will always account io_ticks by 1 jiffies from bdev_start_io_acct()/blk_account_io_start(), and the result can be inaccurate, for example(HZ is 250): Test script: fio -filename=/dev/sda -bs=4k -rw=write -direct=1 -name=test -thinktime=4ms Test result: util is about 90%, while the disk is really idle. In order to account io_ticks precisely, update_io_ticks() must know if there are IO inflight already, and this requires overhead slightly, hence precise io accounting is disabled by default, and user can enable it through sysfs entry or add bool cmd "precise_iostat=1"; Noted that for rq-based devcie, part_stat_local_inc/dec() and part_in_flight() is used to track inflight instead of iterating tags, which is not supposed to be used in fast path because 'tags->lock' is grabbed in blk_mq_find_and_get_req(). Signed-off-by: Yu Kuai <yukuai3(a)huawei.com> --- Documentation/ABI/stable/sysfs-block | 8 ++++-- block/blk-core.c | 34 +++++++++++++++++++---- block/blk-merge.c | 3 +++ block/blk-mq.c | 18 ++++++++++--- block/blk-sysfs.c | 40 ++++++++++++++++++++++++++-- block/blk.h | 4 ++- block/genhd.c | 6 ++--- include/linux/blk-mq.h | 1 + include/linux/blkdev.h | 3 +++ 9 files changed, 100 insertions(+), 17 deletions(-) diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/stable/sysfs-block index 1fe9a553c37b..e5fedecf7bdf 100644 --- a/Documentation/ABI/stable/sysfs-block +++ b/Documentation/ABI/stable/sysfs-block @@ -358,8 +358,12 @@ What: /sys/block/<disk>/queue/iostats Date: January 2009 Contact: linux-block(a)vger.kernel.org Description: - [RW] This file is used to control (on/off) the iostats - accounting of the disk. + [RW] This file is used to control the iostats accounting of the + disk. If this value is 0, iostats accounting is disabled; If + this value is 1, iostats accounting is enabled, but io_ticks is + accounted by sampling and the result is not accurate; If this + value is 2, iostats accounting is enabled and io_ticks is + accounted precisely, but there will be slightly overhead. What: /sys/block/<disk>/queue/logical_block_size diff --git a/block/blk-core.c b/block/blk-core.c index fdf25b8d6e78..d599d9c3fdde 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -71,6 +71,21 @@ static struct kmem_cache *blk_requestq_cachep; */ static struct workqueue_struct *kblockd_workqueue; +static bool precise_iostat; + +static int __init precise_iostat_setup(char *str) +{ + bool precise; + + if (!strtobool(str, &precise)) { + precise_iostat = precise; + pr_info("precise iostat %d\n", precise_iostat); + } + + return 1; +} +__setup("precise_iostat=", precise_iostat_setup); + /** * blk_queue_flag_set - atomically set a queue flag * @flag: flag to be set @@ -441,6 +456,8 @@ struct request_queue *blk_alloc_queue(int node_id) blk_set_default_limits(&q->limits); q->nr_requests = BLKDEV_DEFAULT_RQ; + if (precise_iostat) + blk_queue_flag_set(QUEUE_FLAG_PRECISE_IO_STAT, q); return q; @@ -935,14 +952,20 @@ int iocb_bio_iopoll(struct kiocb *kiocb, struct io_comp_batch *iob, } EXPORT_SYMBOL_GPL(iocb_bio_iopoll); -void update_io_ticks(struct block_device *part, unsigned long now, bool end) +void update_io_ticks(struct block_device *part, unsigned long now, bool end, + bool precise) { unsigned long stamp; again: stamp = READ_ONCE(part->bd_stamp); - if (unlikely(time_after(now, stamp))) { - if (likely(try_cmpxchg(&part->bd_stamp, &stamp, now))) + if (unlikely(time_after(now, stamp)) && + likely(try_cmpxchg(&part->bd_stamp, &stamp, now))) { + if (precise) { + if (end || part_in_flight(part)) + __part_stat_add(part, io_ticks, now - stamp); + } else { __part_stat_add(part, io_ticks, end ? now - stamp : 1); + } } if (part->bd_partno) { part = bdev_whole(part); @@ -954,7 +977,8 @@ unsigned long bdev_start_io_acct(struct block_device *bdev, enum req_op op, unsigned long start_time) { part_stat_lock(); - update_io_ticks(bdev, start_time, false); + update_io_ticks(bdev, start_time, false, + blk_queue_precise_io_stat(bdev->bd_queue)); part_stat_local_inc(bdev, in_flight[op_is_write(op)]); part_stat_unlock(); @@ -982,7 +1006,7 @@ void bdev_end_io_acct(struct block_device *bdev, enum req_op op, unsigned long duration = now - start_time; part_stat_lock(); - update_io_ticks(bdev, now, true); + update_io_ticks(bdev, now, true, true); part_stat_inc(bdev, ios[sgrp]); part_stat_add(bdev, sectors[sgrp], sectors); part_stat_add(bdev, nsecs[sgrp], jiffies_to_nsecs(duration)); diff --git a/block/blk-merge.c b/block/blk-merge.c index 65e75efa9bd3..5db8228c46fc 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -783,6 +783,9 @@ static void blk_account_io_merge_request(struct request *req) if (blk_do_io_stat(req)) { part_stat_lock(); part_stat_inc(req->part, merges[op_stat_group(req_op(req))]); + if (req->rq_flags & RQF_PRECISE_IO_STAT) + part_stat_local_dec(req->part, + in_flight[op_is_write(req_op(req))]); part_stat_unlock(); } } diff --git a/block/blk-mq.c b/block/blk-mq.c index baef592ecb41..8a18330d31ce 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -360,8 +360,11 @@ static struct request *blk_mq_rq_ctx_init(struct blk_mq_alloc_data *data, if (data->flags & BLK_MQ_REQ_PM) data->rq_flags |= RQF_PM; - if (blk_queue_io_stat(q)) + if (blk_queue_io_stat(q)) { data->rq_flags |= RQF_IO_STAT; + if (blk_queue_precise_io_stat(q)) + data->rq_flags |= RQF_PRECISE_IO_STAT; + } rq->rq_flags = data->rq_flags; if (data->rq_flags & RQF_SCHED_TAGS) { @@ -991,17 +994,21 @@ static inline void blk_account_io_done(struct request *req, u64 now) const int sgrp = op_stat_group(req_op(req)); part_stat_lock(); - update_io_ticks(req->part, jiffies, true); + update_io_ticks(req->part, jiffies, true, true); part_stat_inc(req->part, ios[sgrp]); part_stat_add(req->part, nsecs[sgrp], now - req->start_time_ns); + if (req->rq_flags & RQF_PRECISE_IO_STAT) + part_stat_local_dec(req->part, + in_flight[op_is_write(req_op(req))]); part_stat_unlock(); } } static inline void blk_account_io_start(struct request *req) { - trace_block_io_start(req); + bool precise = req->rq_flags & RQF_PRECISE_IO_STAT; + trace_block_io_start(req); if (blk_do_io_stat(req)) { /* * All non-passthrough requests are created from a bio with one @@ -1015,7 +1022,10 @@ static inline void blk_account_io_start(struct request *req) req->part = req->q->disk->part0; part_stat_lock(); - update_io_ticks(req->part, jiffies, false); + update_io_ticks(req->part, jiffies, false, precise); + if (precise) + part_stat_local_inc(req->part, + in_flight[op_is_write(req_op(req))]); part_stat_unlock(); } } diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 63e481262336..d3e07d865755 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -303,7 +303,6 @@ queue_##name##_store(struct request_queue *q, const char *page, size_t count) \ QUEUE_SYSFS_BIT_FNS(nonrot, NONROT, 1); QUEUE_SYSFS_BIT_FNS(random, ADD_RANDOM, 0); -QUEUE_SYSFS_BIT_FNS(iostats, IO_STAT, 0); QUEUE_SYSFS_BIT_FNS(stable_writes, STABLE_WRITES, 0); #undef QUEUE_SYSFS_BIT_FNS @@ -473,6 +472,43 @@ static ssize_t queue_dax_show(struct request_queue *q, char *page) return queue_var_show(blk_queue_dax(q), page); } +static ssize_t queue_iostats_show(struct request_queue *q, char *page) +{ + int val = 0; + + if (blk_queue_io_stat(q)) + val = blk_queue_precise_io_stat(q) ? 2 : 1; + + return sprintf(page, "%u\n", val); +} + +static ssize_t +queue_iostats_store(struct request_queue *q, const char *page, size_t count) +{ + unsigned long nr; + int ret; + + ret = queue_var_store(&nr, page, count); + if (ret < 0) + return ret; + + if (nr > 2) + return -EINVAL; + + if (nr == 0) { + blk_queue_flag_clear(QUEUE_FLAG_IO_STAT, q); + blk_queue_flag_clear(QUEUE_FLAG_PRECISE_IO_STAT, q); + } else if (nr == 1) { + blk_queue_flag_set(QUEUE_FLAG_IO_STAT, q); + blk_queue_flag_clear(QUEUE_FLAG_PRECISE_IO_STAT, q); + } else { + blk_queue_flag_set(QUEUE_FLAG_IO_STAT, q); + blk_queue_flag_set(QUEUE_FLAG_PRECISE_IO_STAT, q); + } + + return count; +} + #define QUEUE_RO_ENTRY(_prefix, _name) \ static struct queue_sysfs_entry _prefix##_entry = { \ .attr = { .name = _name, .mode = 0444 }, \ @@ -494,6 +530,7 @@ QUEUE_RO_ENTRY(queue_max_segments, "max_segments"); QUEUE_RO_ENTRY(queue_max_integrity_segments, "max_integrity_segments"); QUEUE_RO_ENTRY(queue_max_segment_size, "max_segment_size"); QUEUE_RW_ENTRY(elv_iosched, "scheduler"); +QUEUE_RW_ENTRY(queue_iostats, "iostats"); QUEUE_RO_ENTRY(queue_logical_block_size, "logical_block_size"); QUEUE_RO_ENTRY(queue_physical_block_size, "physical_block_size"); @@ -539,7 +576,6 @@ static struct queue_sysfs_entry queue_hw_sector_size_entry = { }; QUEUE_RW_ENTRY(queue_nonrot, "rotational"); -QUEUE_RW_ENTRY(queue_iostats, "iostats"); QUEUE_RW_ENTRY(queue_random, "add_random"); QUEUE_RW_ENTRY(queue_stable_writes, "stable_writes"); diff --git a/block/blk.h b/block/blk.h index 08a358bc0919..d2321709a9ce 100644 --- a/block/blk.h +++ b/block/blk.h @@ -343,7 +343,9 @@ static inline bool blk_do_io_stat(struct request *rq) return (rq->rq_flags & RQF_IO_STAT) && !blk_rq_is_passthrough(rq); } -void update_io_ticks(struct block_device *part, unsigned long now, bool end); +void update_io_ticks(struct block_device *part, unsigned long now, bool end, + bool precise); +unsigned int part_in_flight(struct block_device *part); static inline void req_set_nomerge(struct request_queue *q, struct request *req) { diff --git a/block/genhd.c b/block/genhd.c index 4a16a424f57d..5db94cb32634 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -118,7 +118,7 @@ static void part_stat_read_all(struct block_device *part, } } -static unsigned int part_in_flight(struct block_device *part) +unsigned int part_in_flight(struct block_device *part) { unsigned int inflight = 0; int cpu; @@ -955,7 +955,7 @@ ssize_t part_stat_show(struct device *dev, if (inflight) { part_stat_lock(); - update_io_ticks(bdev, jiffies, true); + update_io_ticks(bdev, jiffies, true, true); part_stat_unlock(); } part_stat_read_all(bdev, &stat); @@ -1248,7 +1248,7 @@ static int diskstats_show(struct seq_file *seqf, void *v) if (inflight) { part_stat_lock(); - update_io_ticks(hd, jiffies, true); + update_io_ticks(hd, jiffies, true, true); part_stat_unlock(); } part_stat_read_all(hd, &stat); diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 65e95a2c4718..83e36851c129 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -46,6 +46,7 @@ typedef __u32 __bitwise req_flags_t; #define RQF_QUIET ((__force req_flags_t)(1 << 11)) /* account into disk and partition IO statistics */ #define RQF_IO_STAT ((__force req_flags_t)(1 << 13)) +#define RQF_PRECISE_IO_STAT ((__force req_flags_t)(1 << 14)) /* runtime pm request */ #define RQF_PM ((__force req_flags_t)(1 << 15)) /* on IO scheduler merge hash */ diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 9f3bcbcb156d..bea0b5fdac74 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -536,6 +536,7 @@ struct request_queue { #define QUEUE_FLAG_NONROT 6 /* non-rotational device (SSD) */ #define QUEUE_FLAG_VIRT QUEUE_FLAG_NONROT /* paravirt device */ #define QUEUE_FLAG_IO_STAT 7 /* do disk/partitions IO accounting */ +#define QUEUE_FLAG_PRECISE_IO_STAT 8 /* do disk/partitions IO accounting precisely */ #define QUEUE_FLAG_NOXMERGES 9 /* No extended merges */ #define QUEUE_FLAG_ADD_RANDOM 10 /* Contributes to random pool */ #define QUEUE_FLAG_SYNCHRONOUS 11 /* always completes in submit context */ @@ -576,6 +577,8 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q); #define blk_queue_stable_writes(q) \ test_bit(QUEUE_FLAG_STABLE_WRITES, &(q)->queue_flags) #define blk_queue_io_stat(q) test_bit(QUEUE_FLAG_IO_STAT, &(q)->queue_flags) +#define blk_queue_precise_io_stat(q) \ + test_bit(QUEUE_FLAG_PRECISE_IO_STAT, &(q)->queue_flags) #define blk_queue_add_random(q) test_bit(QUEUE_FLAG_ADD_RANDOM, &(q)->queue_flags) #define blk_queue_zone_resetall(q) \ test_bit(QUEUE_FLAG_ZONE_RESETALL, &(q)->queue_flags) -- 2.39.2

2 1

[PATCH openEuler-1.0-LTS 0/2] CVE-2023-35827 patchset
by Ziyang Xuan 26 Dec '23

26 Dec '23

CVE-2023-35827 patchset. Yoshihiro Shimoda (2): ravb: Fix use-after-free issue in ravb_tx_timeout_work() ravb: Fix races between ravb_tx_timeout_work() and net related ops drivers/net/ethernet/renesas/ravb_main.c | 10 ++++++++++ 1 file changed, 10 insertions(+) -- 2.25.1

2 3

[PATCH] block: support to account io_ticks precisely
by Yu Kuai 26 Dec '23

26 Dec '23

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8RIME CVE: NA ----------------------------------------------- Currently, io_ticks is accounted based on sampling, specifically update_io_ticks() will always account io_ticks by 1 jiffies from bdev_start_io_acct()/blk_account_io_start(), and the result can be inaccurate, for example(HZ is 250): Test script: fio -filename=/dev/sda -bs=4k -rw=write -direct=1 -name=test -thinktime=4ms Test result: util is about 90%, while the disk is really idle. In order to account io_ticks precisely, update_io_ticks() must know if there are IO inflight already, and this requires overhead slightly, hence precise io accounting is disabled by default, and user can enable it through sysfs entry or add bool cmd "precise_iostat=1"; Noted that for rq-based devcie, part_stat_local_inc/dec() and part_in_flight() is used to track inflight instead of iterating tags, which is not supposed to be used in fast path because 'tags->lock' is grabbed in blk_mq_find_and_get_req(). Signed-off-by: Yu Kuai <yukuai3(a)huawei.com> --- Documentation/ABI/stable/sysfs-block | 8 ++++-- block/blk-core.c | 34 +++++++++++++++++++---- block/blk-merge.c | 3 +++ block/blk-mq.c | 18 ++++++++++--- block/blk-sysfs.c | 40 ++++++++++++++++++++++++++-- block/blk.h | 4 ++- block/genhd.c | 6 ++--- include/linux/blk-mq.h | 1 + include/linux/blkdev.h | 3 +++ 9 files changed, 100 insertions(+), 17 deletions(-) diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/stable/sysfs-block index 1fe9a553c37b..e5fedecf7bdf 100644 --- a/Documentation/ABI/stable/sysfs-block +++ b/Documentation/ABI/stable/sysfs-block @@ -358,8 +358,12 @@ What: /sys/block/<disk>/queue/iostats Date: January 2009 Contact: linux-block(a)vger.kernel.org Description: - [RW] This file is used to control (on/off) the iostats - accounting of the disk. + [RW] This file is used to control the iostats accounting of the + disk. If this value is 0, iostats accounting is disabled; If + this value is 1, iostats accounting is enabled, but io_ticks is + accounted by sampling and the result is not accurate; If this + value is 2, iostats accounting is enabled and io_ticks is + accounted precisely, but there will be slightly overhead. What: /sys/block/<disk>/queue/logical_block_size diff --git a/block/blk-core.c b/block/blk-core.c index fdf25b8d6e78..d599d9c3fdde 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -71,6 +71,21 @@ static struct kmem_cache *blk_requestq_cachep; */ static struct workqueue_struct *kblockd_workqueue; +static bool precise_iostat; + +static int __init precise_iostat_setup(char *str) +{ + bool precise; + + if (!strtobool(str, &precise)) { + precise_iostat = precise; + pr_info("precise iostat %d\n", precise_iostat); + } + + return 1; +} +__setup("precise_iostat=", precise_iostat_setup); + /** * blk_queue_flag_set - atomically set a queue flag * @flag: flag to be set @@ -441,6 +456,8 @@ struct request_queue *blk_alloc_queue(int node_id) blk_set_default_limits(&q->limits); q->nr_requests = BLKDEV_DEFAULT_RQ; + if (precise_iostat) + blk_queue_flag_set(QUEUE_FLAG_PRECISE_IO_STAT, q); return q; @@ -935,14 +952,20 @@ int iocb_bio_iopoll(struct kiocb *kiocb, struct io_comp_batch *iob, } EXPORT_SYMBOL_GPL(iocb_bio_iopoll); -void update_io_ticks(struct block_device *part, unsigned long now, bool end) +void update_io_ticks(struct block_device *part, unsigned long now, bool end, + bool precise) { unsigned long stamp; again: stamp = READ_ONCE(part->bd_stamp); - if (unlikely(time_after(now, stamp))) { - if (likely(try_cmpxchg(&part->bd_stamp, &stamp, now))) + if (unlikely(time_after(now, stamp)) && + likely(try_cmpxchg(&part->bd_stamp, &stamp, now))) { + if (precise) { + if (end || part_in_flight(part)) + __part_stat_add(part, io_ticks, now - stamp); + } else { __part_stat_add(part, io_ticks, end ? now - stamp : 1); + } } if (part->bd_partno) { part = bdev_whole(part); @@ -954,7 +977,8 @@ unsigned long bdev_start_io_acct(struct block_device *bdev, enum req_op op, unsigned long start_time) { part_stat_lock(); - update_io_ticks(bdev, start_time, false); + update_io_ticks(bdev, start_time, false, + blk_queue_precise_io_stat(bdev->bd_queue)); part_stat_local_inc(bdev, in_flight[op_is_write(op)]); part_stat_unlock(); @@ -982,7 +1006,7 @@ void bdev_end_io_acct(struct block_device *bdev, enum req_op op, unsigned long duration = now - start_time; part_stat_lock(); - update_io_ticks(bdev, now, true); + update_io_ticks(bdev, now, true, true); part_stat_inc(bdev, ios[sgrp]); part_stat_add(bdev, sectors[sgrp], sectors); part_stat_add(bdev, nsecs[sgrp], jiffies_to_nsecs(duration)); diff --git a/block/blk-merge.c b/block/blk-merge.c index 65e75efa9bd3..5db8228c46fc 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -783,6 +783,9 @@ static void blk_account_io_merge_request(struct request *req) if (blk_do_io_stat(req)) { part_stat_lock(); part_stat_inc(req->part, merges[op_stat_group(req_op(req))]); + if (req->rq_flags & RQF_PRECISE_IO_STAT) + part_stat_local_dec(req->part, + in_flight[op_is_write(req_op(req))]); part_stat_unlock(); } } diff --git a/block/blk-mq.c b/block/blk-mq.c index baef592ecb41..8a18330d31ce 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -360,8 +360,11 @@ static struct request *blk_mq_rq_ctx_init(struct blk_mq_alloc_data *data, if (data->flags & BLK_MQ_REQ_PM) data->rq_flags |= RQF_PM; - if (blk_queue_io_stat(q)) + if (blk_queue_io_stat(q)) { data->rq_flags |= RQF_IO_STAT; + if (blk_queue_precise_io_stat(q)) + data->rq_flags |= RQF_PRECISE_IO_STAT; + } rq->rq_flags = data->rq_flags; if (data->rq_flags & RQF_SCHED_TAGS) { @@ -991,17 +994,21 @@ static inline void blk_account_io_done(struct request *req, u64 now) const int sgrp = op_stat_group(req_op(req)); part_stat_lock(); - update_io_ticks(req->part, jiffies, true); + update_io_ticks(req->part, jiffies, true, true); part_stat_inc(req->part, ios[sgrp]); part_stat_add(req->part, nsecs[sgrp], now - req->start_time_ns); + if (req->rq_flags & RQF_PRECISE_IO_STAT) + part_stat_local_dec(req->part, + in_flight[op_is_write(req_op(req))]); part_stat_unlock(); } } static inline void blk_account_io_start(struct request *req) { - trace_block_io_start(req); + bool precise = req->rq_flags & RQF_PRECISE_IO_STAT; + trace_block_io_start(req); if (blk_do_io_stat(req)) { /* * All non-passthrough requests are created from a bio with one @@ -1015,7 +1022,10 @@ static inline void blk_account_io_start(struct request *req) req->part = req->q->disk->part0; part_stat_lock(); - update_io_ticks(req->part, jiffies, false); + update_io_ticks(req->part, jiffies, false, precise); + if (precise) + part_stat_local_inc(req->part, + in_flight[op_is_write(req_op(req))]); part_stat_unlock(); } } diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 63e481262336..d3e07d865755 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -303,7 +303,6 @@ queue_##name##_store(struct request_queue *q, const char *page, size_t count) \ QUEUE_SYSFS_BIT_FNS(nonrot, NONROT, 1); QUEUE_SYSFS_BIT_FNS(random, ADD_RANDOM, 0); -QUEUE_SYSFS_BIT_FNS(iostats, IO_STAT, 0); QUEUE_SYSFS_BIT_FNS(stable_writes, STABLE_WRITES, 0); #undef QUEUE_SYSFS_BIT_FNS @@ -473,6 +472,43 @@ static ssize_t queue_dax_show(struct request_queue *q, char *page) return queue_var_show(blk_queue_dax(q), page); } +static ssize_t queue_iostats_show(struct request_queue *q, char *page) +{ + int val = 0; + + if (blk_queue_io_stat(q)) + val = blk_queue_precise_io_stat(q) ? 2 : 1; + + return sprintf(page, "%u\n", val); +} + +static ssize_t +queue_iostats_store(struct request_queue *q, const char *page, size_t count) +{ + unsigned long nr; + int ret; + + ret = queue_var_store(&nr, page, count); + if (ret < 0) + return ret; + + if (nr > 2) + return -EINVAL; + + if (nr == 0) { + blk_queue_flag_clear(QUEUE_FLAG_IO_STAT, q); + blk_queue_flag_clear(QUEUE_FLAG_PRECISE_IO_STAT, q); + } else if (nr == 1) { + blk_queue_flag_set(QUEUE_FLAG_IO_STAT, q); + blk_queue_flag_clear(QUEUE_FLAG_PRECISE_IO_STAT, q); + } else { + blk_queue_flag_set(QUEUE_FLAG_IO_STAT, q); + blk_queue_flag_set(QUEUE_FLAG_PRECISE_IO_STAT, q); + } + + return count; +} + #define QUEUE_RO_ENTRY(_prefix, _name) \ static struct queue_sysfs_entry _prefix##_entry = { \ .attr = { .name = _name, .mode = 0444 }, \ @@ -494,6 +530,7 @@ QUEUE_RO_ENTRY(queue_max_segments, "max_segments"); QUEUE_RO_ENTRY(queue_max_integrity_segments, "max_integrity_segments"); QUEUE_RO_ENTRY(queue_max_segment_size, "max_segment_size"); QUEUE_RW_ENTRY(elv_iosched, "scheduler"); +QUEUE_RW_ENTRY(queue_iostats, "iostats"); QUEUE_RO_ENTRY(queue_logical_block_size, "logical_block_size"); QUEUE_RO_ENTRY(queue_physical_block_size, "physical_block_size"); @@ -539,7 +576,6 @@ static struct queue_sysfs_entry queue_hw_sector_size_entry = { }; QUEUE_RW_ENTRY(queue_nonrot, "rotational"); -QUEUE_RW_ENTRY(queue_iostats, "iostats"); QUEUE_RW_ENTRY(queue_random, "add_random"); QUEUE_RW_ENTRY(queue_stable_writes, "stable_writes"); diff --git a/block/blk.h b/block/blk.h index 08a358bc0919..d2321709a9ce 100644 --- a/block/blk.h +++ b/block/blk.h @@ -343,7 +343,9 @@ static inline bool blk_do_io_stat(struct request *rq) return (rq->rq_flags & RQF_IO_STAT) && !blk_rq_is_passthrough(rq); } -void update_io_ticks(struct block_device *part, unsigned long now, bool end); +void update_io_ticks(struct block_device *part, unsigned long now, bool end, + bool precise); +unsigned int part_in_flight(struct block_device *part); static inline void req_set_nomerge(struct request_queue *q, struct request *req) { diff --git a/block/genhd.c b/block/genhd.c index 4a16a424f57d..5db94cb32634 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -118,7 +118,7 @@ static void part_stat_read_all(struct block_device *part, } } -static unsigned int part_in_flight(struct block_device *part) +unsigned int part_in_flight(struct block_device *part) { unsigned int inflight = 0; int cpu; @@ -955,7 +955,7 @@ ssize_t part_stat_show(struct device *dev, if (inflight) { part_stat_lock(); - update_io_ticks(bdev, jiffies, true); + update_io_ticks(bdev, jiffies, true, true); part_stat_unlock(); } part_stat_read_all(bdev, &stat); @@ -1248,7 +1248,7 @@ static int diskstats_show(struct seq_file *seqf, void *v) if (inflight) { part_stat_lock(); - update_io_ticks(hd, jiffies, true); + update_io_ticks(hd, jiffies, true, true); part_stat_unlock(); } part_stat_read_all(hd, &stat); diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 65e95a2c4718..83e36851c129 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -46,6 +46,7 @@ typedef __u32 __bitwise req_flags_t; #define RQF_QUIET ((__force req_flags_t)(1 << 11)) /* account into disk and partition IO statistics */ #define RQF_IO_STAT ((__force req_flags_t)(1 << 13)) +#define RQF_PRECISE_IO_STAT ((__force req_flags_t)(1 << 14)) /* runtime pm request */ #define RQF_PM ((__force req_flags_t)(1 << 15)) /* on IO scheduler merge hash */ diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 9f3bcbcb156d..bea0b5fdac74 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -536,6 +536,7 @@ struct request_queue { #define QUEUE_FLAG_NONROT 6 /* non-rotational device (SSD) */ #define QUEUE_FLAG_VIRT QUEUE_FLAG_NONROT /* paravirt device */ #define QUEUE_FLAG_IO_STAT 7 /* do disk/partitions IO accounting */ +#define QUEUE_FLAG_PRECISE_IO_STAT 8 /* do disk/partitions IO accounting precisely */ #define QUEUE_FLAG_NOXMERGES 9 /* No extended merges */ #define QUEUE_FLAG_ADD_RANDOM 10 /* Contributes to random pool */ #define QUEUE_FLAG_SYNCHRONOUS 11 /* always completes in submit context */ @@ -576,6 +577,8 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q); #define blk_queue_stable_writes(q) \ test_bit(QUEUE_FLAG_STABLE_WRITES, &(q)->queue_flags) #define blk_queue_io_stat(q) test_bit(QUEUE_FLAG_IO_STAT, &(q)->queue_flags) +#define blk_queue_precise_io_stat(q) \ + test_bit(QUEUE_FLAG_PRECISE_IO_STAT, &(q)->queue_flags) #define blk_queue_add_random(q) test_bit(QUEUE_FLAG_ADD_RANDOM, &(q)->queue_flags) #define blk_queue_zone_resetall(q) \ test_bit(QUEUE_FLAG_ZONE_RESETALL, &(q)->queue_flags) -- 2.39.2

1 0

[PATCH OLK-6.6 0/1] crypto: kabi: KABI reservation for crypto
by GUO Zihua 26 Dec '23

26 Dec '23

This patchset reserves some KABI space for future crypto development. GUO Zihua (1): crypto: kabi: KABI reservation for crypto include/crypto/aead.h | 3 +++ include/crypto/akcipher.h | 4 ++++ include/crypto/algapi.h | 4 ++++ include/crypto/hash.h | 2 ++ include/crypto/if_alg.h | 3 +++ include/crypto/public_key.h | 3 +++ include/crypto/rng.h | 2 ++ include/crypto/skcipher.h | 3 +++ include/linux/crypto.h | 2 ++ include/linux/kernel_read_file.h | 3 +++ include/linux/kexec.h | 5 +++++ 11 files changed, 34 insertions(+) -- 2.34.1

2 2

[PATCH OLK-6.6 0/7] arm64: Add framework to turn IPI as NMI
by Liao Chen 26 Dec '23

26 Dec '23

Config Dependencies: CONFIG_PSEUDO_NMI=y CONFIG_LOCKUP_DETECTOR=y CONFIG_SOFTLOCKUP_DETECTOR=y CONFIG_LKDTM=y CONFIG_HAVE_ARCH_KGDB=y CONFIG_KGDB=y CONFIG_KGDB_HONOUR_BLOCKLIST=y CONFIG_KGDB_SERIAL_CONSOLE=y CONFIG_KGDB_KDB=y Sumit Garg (7): arm64: Add framework to turn IPI as NMI irqchip/gic-v3: Enable support for SGIs to act as NMIs arm64: smp: Assign and setup an IPI as NMI nmi: backtrace: Allow runtime arch specific override arm64: ipi_nmi: Add support for NMI backtrace kgdb: Expose default CPUs roundup fallback mechanism arm64: kgdb: Roundup cpus using IPI as NMI arch/arm/include/asm/irq.h | 2 +- arch/arm/kernel/smp.c | 3 +- arch/arm64/include/asm/irq.h | 6 +++ arch/arm64/include/asm/nmi.h | 17 +++++++ arch/arm64/kernel/Makefile | 2 +- arch/arm64/kernel/ipi_nmi.c | 84 ++++++++++++++++++++++++++++++++ arch/arm64/kernel/kgdb.c | 18 +++++++ arch/arm64/kernel/smp.c | 8 +++ arch/mips/include/asm/irq.h | 2 +- arch/mips/kernel/process.c | 3 +- arch/powerpc/include/asm/irq.h | 2 +- arch/powerpc/include/asm/nmi.h | 6 +++ arch/powerpc/kernel/stacktrace.c | 3 +- arch/sparc/include/asm/irq_64.h | 2 +- arch/sparc/kernel/process_64.c | 4 +- arch/x86/include/asm/irq.h | 2 +- arch/x86/kernel/apic/hw_nmi.c | 3 +- drivers/irqchip/irq-gic-v3.c | 29 ++++++++--- include/linux/kgdb.h | 12 +++++ include/linux/nmi.h | 12 ++--- kernel/debug/debug_core.c | 8 ++- 21 files changed, 200 insertions(+), 28 deletions(-) create mode 100644 arch/arm64/include/asm/nmi.h create mode 100644 arch/arm64/kernel/ipi_nmi.c -- 2.34.1

2 8

[PATCH openEuler-1.0-LTS 0/2] Fix CVE-2032-6546
by Yi Yang 26 Dec '23

26 Dec '23

Fix CVE-2032-6546 Daniel Starke (1): tty: n_gsm: fix restart handling via CLD command Yi Yang (1): tty: n_gsm: fix the UAF caused by race condition in gsm_cleanup_mux drivers/tty/n_gsm.c | 71 ++++++++++++++------------------------------- 1 file changed, 22 insertions(+), 49 deletions(-) -- 2.25.1

2 3

[PATCH OLK-5.10] ravb: Fix use-after-free issue in ravb_tx_timeout_work()
by Ziyang Xuan 26 Dec '23

26 Dec '23

From: Yoshihiro Shimoda <yoshihiro.shimoda.uh(a)renesas.com> stable inclusion from stable-v5.10.199 commit db9aafa19547833240f58c2998aed7baf414dc82 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I7EDZ1 CVE: CVE-2023-35827 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 3971442870713de527684398416970cf025b4f89 upstream. The ravb_stop() should call cancel_work_sync(). Otherwise, ravb_tx_timeout_work() is possible to use the freed priv after ravb_remove() was called like below: CPU0 CPU1 ravb_tx_timeout() ravb_remove() unregister_netdev() free_netdev(ndev) // free priv ravb_tx_timeout_work() // use priv unregister_netdev() will call .ndo_stop() so that ravb_stop() is called. And, after phy_stop() is called, netif_carrier_off() is also called. So that .ndo_tx_timeout() will not be called after phy_stop(). Fixes: c156633f1353 ("Renesas Ethernet AVB driver proper") Reported-by: Zheng Wang <zyytlz.wz(a)163.com> Closes: https://lore.kernel.org/netdev/20230725030026.1664873-1-zyytlz.wz@163.com/ Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh(a)renesas.com> Reviewed-by: Sergey Shtylyov <s.shtylyov(a)omp.ru> Link: https://lore.kernel.org/r/20231005011201.14368-3-yoshihiro.shimoda.uh@renes… Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Ziyang Xuan <william.xuanziyang(a)huawei.com> --- drivers/net/ethernet/renesas/ravb_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 98337f5f2036..efa075af7241 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -1710,6 +1710,8 @@ static int ravb_close(struct net_device *ndev) of_phy_deregister_fixed_link(np); } + cancel_work_sync(&priv->work); + if (priv->chip_id != RCAR_GEN2) { free_irq(priv->tx_irqs[RAVB_NC], ndev); free_irq(priv->rx_irqs[RAVB_NC], ndev); -- 2.25.1

2 1

[PATCH OLK-6.6 0/4] files cgroup
by chenridong 26 Dec '23

26 Dec '23

Binder Makin (1): cgroups: Resource controller for open files Lu Jialin (1): enable CONFIG_CGROUP_FILES in openeuler_defconfig for x86 and arm64 Yang Yingliang (1): cgroup/files: support boot parameter to control if disable files cgroup Yu Kuai (1): fs/filescontrol: add a switch to enable / disable accounting of open fds .../admin-guide/kernel-parameters.txt | 7 +- arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + fs/Makefile | 1 + fs/file.c | 43 ++- fs/filescontrol.c | 347 ++++++++++++++++++ include/linux/cgroup_subsys.h | 4 + include/linux/fdtable.h | 1 + include/linux/filescontrol.h | 53 +++ init/Kconfig | 10 + 10 files changed, 459 insertions(+), 9 deletions(-) create mode 100644 fs/filescontrol.c create mode 100644 include/linux/filescontrol.h -- 2.34.1

2 5

[PATCH OLK-6.6 0/3] make fair tag sharing configurable
by Yu Kuai 26 Dec '23

26 Dec '23

Yu Kuai (3): blk-mq: add apis to disable fair tag sharing scsi: core: make fair tag sharing configurable via sysfs scsi_lib: disable fair tag sharing by default if total tags is less than 128 block/blk-mq-debugfs.c | 1 + block/blk-mq.c | 30 ++++++++++++++++++++++++++++++ block/blk-mq.h | 3 ++- drivers/scsi/scsi_lib.c | 3 +++ drivers/scsi/scsi_sysfs.c | 38 ++++++++++++++++++++++++++++++++++++++ include/linux/blk-mq.h | 3 +++ 6 files changed, 77 insertions(+), 1 deletion(-) -- 2.39.2

2 4

[PATCH OLK-6.6 0/3] memcg: support OOM priority for memcg
by Jinjiang Tu 26 Dec '23

26 Dec '23

Support OOM priority for memcg. Changelog: * rename CONFIG_MEMCG_QOS to CONFIG_MEMCG_OOM_PRIORITY * move CONFIG_MEMCG_OOM_PRIORITY to init/Kconfig * set CONFIG_MEMCG_OOM_PRIORITY default from y to n, and enbale it in openeuler_defconfig * add rcu_read_lock() protection for mem_cgroup_from_task() * Instead of static key, use variable to check if the feature is enabled * use READ_ONCE/WRITE_ONCE protection when read/write oom_prio * cleanup Jing Xiangfeng (3): memcg: support priority for oom memcg: Add sysctl memcg_qos_enable memcg: enable CONFIG_MEMCG_OOM_PRIORITY by default arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + include/linux/memcontrol.h | 26 +++ init/Kconfig | 14 ++ mm/memcontrol.c | 229 +++++++++++++++++++++++++ mm/oom_kill.c | 61 ++++++- 6 files changed, 327 insertions(+), 5 deletions(-) -- 2.25.1

2 4

[PATCH openEuler-22.03-LTS] tty: n_gsm: fix the UAF caused by race condition in gsm_cleanup_mux
by Yi Yang 26 Dec '23

26 Dec '23

stable inclusion from stable-v5.10.192 commit 869ce5e5984595bd2c62b598d977debc218b6f4d category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8QFUO CVE: CVE-2023-6546 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 3c4f8333b582487a2d1e02171f1465531cde53e3 upstream. In commit 9b9c8195f3f0 ("tty: n_gsm: fix UAF in gsm_cleanup_mux"), the UAF problem is not completely fixed. There is a race condition in gsm_cleanup_mux(), which caused this UAF. The UAF problem is triggered by the following race: task[5046] task[5054] ----------------------- ----------------------- gsm_cleanup_mux(); dlci = gsm->dlci[0]; mutex_lock(&gsm->mutex); gsm_cleanup_mux(); dlci = gsm->dlci[0]; //Didn't take the lock gsm_dlci_release(gsm->dlci[i]); gsm->dlci[i] = NULL; mutex_unlock(&gsm->mutex); mutex_lock(&gsm->mutex); dlci->dead = true; //UAF Fix it by assigning values after mutex_lock(). Link: https://syzkaller.appspot.com/text?tag=CrashReport&x=176188b5a80000 Cc: stable <stable(a)kernel.org> Fixes: 9b9c8195f3f0 ("tty: n_gsm: fix UAF in gsm_cleanup_mux") Fixes: aa371e96f05d ("tty: n_gsm: fix restart handling via CLD command") Signed-off-by: Yi Yang <yiyang13(a)huawei.com> Co-developed-by: Qiumiao Zhang <zhangqiumiao1(a)huawei.com> Signed-off-by: Qiumiao Zhang <zhangqiumiao1(a)huawei.com> Link: https://lore.kernel.org/r/20230811031121.153237-1-yiyang13@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Yi Yang <yiyang13(a)huawei.com> --- drivers/tty/n_gsm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index cb5ed4155a8d..2e446b34160f 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -2158,12 +2158,13 @@ static void gsm_error(struct gsm_mux *gsm, static void gsm_cleanup_mux(struct gsm_mux *gsm, bool disc) { int i; - struct gsm_dlci *dlci = gsm->dlci[0]; + struct gsm_dlci *dlci; struct gsm_msg *txq, *ntxq; gsm->dead = true; mutex_lock(&gsm->mutex); + dlci = gsm->dlci[0]; if (dlci) { if (disc && dlci->state != DLCI_CLOSED) { gsm_dlci_begin_close(dlci); -- 2.25.1

2 1

[PATCH OLK-6.6 0/2] Add support for memory limit
by Ze Zuo 26 Dec '23

26 Dec '23

To implement this feature, a new function called "shrink_memory" has been added, which can recycle a specific amount of memory. This feature mainly supports the following two functions: 1) add periodical memory reclaim 2) add pagecache limit Above functionalities depend on CONFIG_PAGE_CACHE_LIMIT, and the interface and functionality tests have been successfully completed. ChangeLog: - Some minor changes about description and code, no functional changes - rename page_cache_shrink_memory to shrink_memory - move the declaration of the 'shrink_memory' function to 'internal.h', no functional changes - add description information for function "shrink_memory" - update documentation for using feature alerts Ze Zuo (2): mm: support periodical memory reclaim mm: support pagecache limit Documentation/admin-guide/sysctl/vm.rst | 43 +++++ mm/Kconfig | 13 ++ mm/Makefile | 1 + mm/internal.h | 4 + mm/page_cache_limit.c | 199 ++++++++++++++++++++++++ mm/vmscan.c | 39 +++++ 6 files changed, 299 insertions(+) create mode 100644 mm/page_cache_limit.c -- 2.25.1

2 3

[PATCH OLK-6.6 0/7] arm64: Add framework to turn IPI as NMI
by Liao Chen 26 Dec '23

26 Dec '23

Config Dependencies: CONFIG_PSEUDO_NMI=y CONFIG_LOCKUP_DETECTOR=y CONFIG_SOFTLOCKUP_DETECTOR=y CONFIG_LKDTM=y CONFIG_HAVE_ARCH_KGDB=y CONFIG_KGDB=y CONFIG_KGDB_HONOUR_BLOCKLIST=y CONFIG_KGDB_SERIAL_CONSOLE=y CONFIG_KGDB_KDB=y Sumit Garg (7): arm64: Add framework to turn IPI as NMI irqchip/gic-v3: Enable support for SGIs to act as NMIs arm64: smp: Assign and setup an IPI as NMI nmi: backtrace: Allow runtime arch specific override arm64: ipi_nmi: Add support for NMI backtrace kgdb: Expose default CPUs roundup fallback mechanism arm64: kgdb: Roundup cpus using IPI as NMI arch/arm/include/asm/irq.h | 2 +- arch/arm/kernel/smp.c | 3 +- arch/arm64/include/asm/irq.h | 6 +++ arch/arm64/include/asm/nmi.h | 17 +++++++ arch/arm64/kernel/Makefile | 2 +- arch/arm64/kernel/ipi_nmi.c | 84 ++++++++++++++++++++++++++++++++ arch/arm64/kernel/kgdb.c | 18 +++++++ arch/arm64/kernel/smp.c | 8 +++ arch/mips/include/asm/irq.h | 2 +- arch/mips/kernel/process.c | 3 +- arch/powerpc/include/asm/irq.h | 2 +- arch/powerpc/include/asm/nmi.h | 6 +++ arch/powerpc/kernel/stacktrace.c | 3 +- arch/sparc/include/asm/irq_64.h | 2 +- arch/sparc/kernel/process_64.c | 4 +- arch/x86/include/asm/irq.h | 2 +- arch/x86/kernel/apic/hw_nmi.c | 3 +- drivers/irqchip/irq-gic-v3.c | 29 ++++++++--- include/linux/kgdb.h | 12 +++++ include/linux/nmi.h | 12 ++--- kernel/debug/debug_core.c | 8 ++- 21 files changed, 200 insertions(+), 28 deletions(-) create mode 100644 arch/arm64/include/asm/nmi.h create mode 100644 arch/arm64/kernel/ipi_nmi.c -- 2.34.1

2 8

[PATCH OLK-6.6 0/7] arm64: Add framework to turn IPI as NMI
by Liao Chen 26 Dec '23

26 Dec '23

Config Dependencies: CONFIG_PSEUDO_NMI=y CONFIG_LOCKUP_DETECTOR=y CONFIG_SOFTLOCKUP_DETECTOR=y CONFIG_LKDTM=y CONFIG_HAVE_ARCH_KGDB=y CONFIG_KGDB=y CONFIG_KGDB_HONOUR_BLOCKLIST=y CONFIG_KGDB_SERIAL_CONSOLE=y CONFIG_KGDB_KDB=y Sumit Garg (7): arm64: Add framework to turn IPI as NMI irqchip/gic-v3: Enable support for SGIs to act as NMIs arm64: smp: Assign and setup an IPI as NMI nmi: backtrace: Allow runtime arch specific override arm64: ipi_nmi: Add support for NMI backtrace kgdb: Expose default CPUs roundup fallback mechanism arm64: kgdb: Roundup cpus using IPI as NMI arch/arm/include/asm/irq.h | 2 +- arch/arm/kernel/smp.c | 3 +- arch/arm64/include/asm/irq.h | 6 +++ arch/arm64/include/asm/nmi.h | 17 +++++++ arch/arm64/kernel/Makefile | 2 +- arch/arm64/kernel/ipi_nmi.c | 84 ++++++++++++++++++++++++++++++++ arch/arm64/kernel/kgdb.c | 18 +++++++ arch/arm64/kernel/smp.c | 8 +++ arch/mips/include/asm/irq.h | 2 +- arch/mips/kernel/process.c | 3 +- arch/powerpc/include/asm/nmi.h | 6 +++ arch/powerpc/kernel/stacktrace.c | 3 +- arch/sparc/include/asm/irq_64.h | 2 +- arch/sparc/kernel/process_64.c | 4 +- arch/x86/include/asm/irq.h | 2 +- arch/x86/kernel/apic/hw_nmi.c | 3 +- drivers/irqchip/irq-gic-v3.c | 29 ++++++++--- include/linux/kgdb.h | 12 +++++ include/linux/nmi.h | 12 ++--- kernel/debug/debug_core.c | 8 ++- 20 files changed, 199 insertions(+), 27 deletions(-) create mode 100644 arch/arm64/include/asm/nmi.h create mode 100644 arch/arm64/kernel/ipi_nmi.c -- 2.34.1

2 8

[PATCH openEuler-22.03-LTS-SP2 0/2] perf/core: Fix CVE-2023-6931
by Yang Jihong 26 Dec '23

26 Dec '23

Mark Rutland (1): perf: Fix perf_event_validate_size() lockdep splat Peter Zijlstra (1): perf: Fix perf_event_validate_size() kernel/events/core.c | 67 ++++++++++++++++++++++++++++++-------------- 1 file changed, 46 insertions(+), 21 deletions(-) -- 2.34.1

2 3

[PATCH OLK-6.6] iommu/arm-smmu-v3: Add a SYNC command to avoid broken page table prefetch
by Zhang Zekun 25 Dec '23

25 Dec '23

hulk inclusion category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8QSLV CVE: NA ----------------------------------------------- On Hisilicon LINXICORE9100 cores, SMMU pagetable prefetch features may prefetch and use a invalid PTE even the PTE is valid at that time. This will cause the device trigger fake pagefaults. If the SMMU works in terminate mode, transactions which occur fake pagefaults will be aborted, and could result in unexpected errors. To fix this problem, we need to add a SYNC command after smmu has map a iova, then smmu will always try to get the newest PTE. Signed-off-by: Zhang Zekun <zhangzekun11(a)huawei.com> --- arch/arm64/Kconfig | 13 +++++++++++++ arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/kernel/cpu_errata.c | 14 ++++++++++++++ arch/arm64/tools/cpucaps | 1 + drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 20 ++++++++++++++++++++ 5 files changed, 49 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 2aca373a7038..02f6dff029ed 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1180,6 +1180,19 @@ config HISILICON_ERRATUM_1980005 If unsure, say N. +config HISILICON_ERRATUM_162100602 + bool "Hisilicon erratum 162100602" + depends on ARM_SMMU_V3 + default y + help + On Hisilicon LINXICORE9100 cores, SMMU pagetable prefetch features may + prefetch and use a invalid PTE even the PTE is valid at that time. This + will cause the device trigger fake pagefaults. If the SMMU works in + terminate mode, transactions which occur fake pagefaults will be aborted, + and could result in unexpected errors. + + If unsure, say Y. + config QCOM_FALKOR_ERRATUM_1003 bool "Falkor E1003: Incorrect translation due to ASID change" default y diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 33ba39711884..98fa4d2f3b13 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -399,6 +399,7 @@ CONFIG_CAVIUM_TX2_ERRATUM_219=y CONFIG_FUJITSU_ERRATUM_010001=y CONFIG_HISILICON_ERRATUM_161600802=y CONFIG_HISILICON_ERRATUM_162100125=y +CONFIG_HISILICON_ERRATUM_162100602=y CONFIG_QCOM_FALKOR_ERRATUM_1003=y CONFIG_QCOM_FALKOR_ERRATUM_1009=y CONFIG_QCOM_QDF2400_ERRATUM_0065=y diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index a686a96d966a..c569e6c0ac07 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -360,6 +360,13 @@ static const struct midr_range hisilicon_erratum_162100125_cpus[] = { }; #endif +#ifdef CONFIG_HISILICON_ERRATUM_162100602 +static const struct midr_range hisilicon_erratum_162100602_cpus[] = { + MIDR_REV(MIDR_HISI_LINXICORE9100, 0, 0), + {}, +}; +#endif + #ifdef CONFIG_QCOM_FALKOR_ERRATUM_1003 static const struct arm64_cpu_capabilities qcom_erratum_1003_list[] = { { @@ -591,6 +598,13 @@ const struct arm64_cpu_capabilities arm64_errata[] = { ERRATA_MIDR_RANGE_LIST(hisilicon_erratum_162100125_cpus), }, #endif +#ifdef CONFIG_HISILICON_ERRATUM_162100602 + { + .desc = "Hisilicon erratum 162100602", + .capability = ARM64_WORKAROUND_HISILICON_ERRATUM_162100602, + ERRATA_MIDR_RANGE_LIST(hisilicon_erratum_162100602_cpus), + }, +#endif #ifdef CONFIG_HISILICON_ERRATUM_1980005 { .desc = "Hisilicon erratum 1980005 (IDC)", diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps index 0b62edb91876..569ecec76c16 100644 --- a/arch/arm64/tools/cpucaps +++ b/arch/arm64/tools/cpucaps @@ -103,3 +103,4 @@ WORKAROUND_SPECULATIVE_AT WORKAROUND_HISILICON_ERRATUM_162100125 WORKAROUND_HISI_HIP08_RU_PREFETCH WORKAROUND_HISILICON_1980005 +WORKAROUND_HISILICON_ERRATUM_162100602 diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index 5055a66644af..d0422bb13724 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2528,6 +2528,23 @@ static void arm_smmu_iotlb_sync(struct iommu_domain *domain, gather->pgsize, true, smmu_domain); } +#ifdef CONFIG_HISILICON_ERRATUM_162100602 +static void arm_smmu_iotlb_sync_map(struct iommu_domain *domain, + unsigned long iova, size_t size) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + size_t granule_size; + + if (!cpus_have_const_cap(ARM64_WORKAROUND_HISILICON_ERRATUM_162100602)) + return; + + granule_size = 1 << __ffs(smmu_domain->domain.pgsize_bitmap); + + /* Add a SYNC command to sync io-pgtale to avoid errors in pgtable prefetch*/ + arm_smmu_tlb_inv_range_domain(iova, granule_size, granule_size, true, smmu_domain); +} +#endif + static phys_addr_t arm_smmu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova) { @@ -2883,6 +2900,9 @@ static struct iommu_ops arm_smmu_ops = { .unmap_pages = arm_smmu_unmap_pages, .flush_iotlb_all = arm_smmu_flush_iotlb_all, .iotlb_sync = arm_smmu_iotlb_sync, +#ifdef CONFIG_HISILICON_ERRATUM_162100602 + .iotlb_sync_map = arm_smmu_iotlb_sync_map, +#endif .iova_to_phys = arm_smmu_iova_to_phys, .enable_nesting = arm_smmu_enable_nesting, .free = arm_smmu_domain_free, -- 2.17.1

2 1

[PATCH V4 OLK-6.6 0/5] ubi: Enhance fault injection capability for the UBI driver
by ZhaoLong Wang 25 Dec '23

25 Dec '23

CONFIG Dependency CONFIG_MTD=y CONFIG_MTD_NAND_NANDSIM=m CONFIG_MTD_UBI=m CONFIG_FAULT_INJECTION_DEBUG_FS=y CONFIG_MTD_PARTITIONED_MASTER The existing fault injection capability of UBI is too simple. It uses hard-coded fault probability values and lacks other configurable options. As a result, these interfaces are difficult to use when digging defects in the abnormal path of code and reproducing some problems. The kernel provides a powerful fault injection framework, which provides rich configurable fault injection attributes during runtime. So it can be used to improve the fault injection capability of the UBI driver. This series of patches refactor the existing fault injection interface and add some fault injection types to help testers and developers find potential problems in the code. This series of patches enhance the existing fault injection interface and retain the old debugfs interface, and add some fault injection types to help testers and developers Look for potential problems in the code. v1 -> v2: Delete the redundant semicolon of the first patch. v2 -> v3: Completely checked and fixed the English syntax errors in the patch. v3 -> v4: Fixed code indent error ZhaoLong Wang (5): ubi: Use the fault injection framework to enhance the fault injection capability ubi: Split io_failures into write_failure and erase_failure ubi: Add six fault injection type for testing ubi: Reserve sufficient buffer length for the input mask mtd: Add several functions to the fail_function list drivers/mtd/mtdcore.c | 5 + drivers/mtd/ubi/Kconfig | 9 ++ drivers/mtd/ubi/debug.c | 108 ++++++++++++-- drivers/mtd/ubi/debug.h | 304 +++++++++++++++++++++++++++++++++++++--- drivers/mtd/ubi/io.c | 86 +++++++++++- drivers/mtd/ubi/ubi.h | 45 +++--- 6 files changed, 498 insertions(+), 59 deletions(-) -- 2.39.2

2 6

[PATCH V4 OLK-6.6 0/5] ubi: Enhance fault injection capability for the UBI driver
by ZhaoLong Wang 25 Dec '23

25 Dec '23

CONFIG Dependency CONFIG_MTD=y CONFIG_MTD_NAND_NANDSIM=m CONFIG_MTD_UBI=m CONFIG_FAULT_INJECTION_DEBUG_FS=y CONFIG_MTD_PARTITIONED_MASTER The existing fault injection capability of UBI is too simple. It uses hard-coded fault probability values and lacks other configurable options. As a result, these interfaces are difficult to use when digging defects in the abnormal path of code and reproducing some problems. The kernel provides a powerful fault injection framework, which provides rich configurable fault injection attributes during runtime. So it can be used to improve the fault injection capability of the UBI driver. This series of patches refactor the existing fault injection interface and add some fault injection types to help testers and developers find potential problems in the code. This series of patches enhance the existing fault injection interface and retain the old debugfs interface, and add some fault injection types to help testers and developers Look for potential problems in the code. v1 -> v2: Delete the redundant semicolon of the first patch. v2 -> v3: Completely checked and fixed the English syntax errors in the patch. v3 -> v4: Fixed code indent error ZhaoLong Wang (5): ubi: Use the fault injection framework to enhance the fault injection capability ubi: Split io_failures into write_failure and erase_failure ubi: Add six fault injection type for testing ubi: Reserve sufficient buffer length for the input mask mtd: Add several functions to the fail_function list drivers/mtd/mtdcore.c | 5 + drivers/mtd/ubi/Kconfig | 9 ++ drivers/mtd/ubi/debug.c | 108 ++++++++++++-- drivers/mtd/ubi/debug.h | 304 +++++++++++++++++++++++++++++++++++++--- drivers/mtd/ubi/io.c | 86 +++++++++++- drivers/mtd/ubi/ubi.h | 45 +++--- 6 files changed, 498 insertions(+), 59 deletions(-) -- 2.39.2

2 6

[PATCH OLK-6.6 v2 0/9] Support dynamic affinity scheduler
by Hui Tang 25 Dec '23

25 Dec '23

patch 1->7: Introduce dynamic affinity for cfs scheduler. patch 8->9: Tiny bugfix. v1->v2: * move sysctl interface to fair.c Hui Tang (7): sched: Introduce dynamic affinity for cfs scheduler cpuset: Introduce new interface for scheduler dynamic affinity sched: Adjust wakeup cpu range according CPU util dynamicly sched: Adjust cpu allowed in load balance dynamicly sched: Add statistics for scheduler dynamic affinity sched: Add cmdline for dynamic affinity config: enable CONFIG_QOS_SCHED_DYNAMIC_AFFINITY by default zhangwei123171 (2): sched/fair: Remove invalid cpu selection logic in dynamic affinity sched/fair: Modify idle cpu judgment in dynamic affinity arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + fs/proc/base.c | 73 ++++++++++ include/linux/sched.h | 22 +++ init/Kconfig | 10 ++ init/init_task.c | 3 + kernel/cgroup/cpuset.c | 153 ++++++++++++++++++++- kernel/fork.c | 16 +++ kernel/sched/core.c | 98 +++++++++++++ kernel/sched/debug.c | 6 + kernel/sched/fair.c | 183 +++++++++++++++++++++++++ kernel/sched/features.h | 7 + 12 files changed, 572 insertions(+), 1 deletion(-) -- 2.34.1

2 10

[PATCH OLK-6.6 0/4] files-cgroup
by chenridong 25 Dec '23

25 Dec '23

Binder Makin (1): cgroups: Resource controller for open files Lu Jialin (1): enable CONFIG_CGROUP_FILES in openeuler_defconfig for x86 and arm64 Yang Yingliang (1): cgroup/files: support boot parameter to control if disable files cgroup Yu Kuai (1): fs/filescontrol: add a switch to enable / disable accounting of open fds .../admin-guide/kernel-parameters.txt | 7 +- arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + fs/Makefile | 1 + fs/file.c | 68 +++- fs/filescontrol.c | 312 ++++++++++++++++++ include/linux/cgroup_subsys.h | 4 + include/linux/fdtable.h | 1 + include/linux/filescontrol.h | 40 +++ init/Kconfig | 10 + 10 files changed, 438 insertions(+), 7 deletions(-) create mode 100644 fs/filescontrol.c create mode 100644 include/linux/filescontrol.h -- 2.34.1

2 5

[PATCH OLK-6.6 0/7] arm64: Add framework to turn IPI as NMI
by Liao Chen 25 Dec '23

25 Dec '23

Config Dependencies: CONFIG_PSEUDO_NMI=y CONFIG_LOCKUP_DETECTOR=y CONFIG_SOFTLOCKUP_DETECTOR=y CONFIG_LKDTM=y CONFIG_HAVE_ARCH_KGDB=y CONFIG_KGDB=y CONFIG_KGDB_HONOUR_BLOCKLIST=y CONFIG_KGDB_SERIAL_CONSOLE=y CONFIG_KGDB_KDB=y Sumit Garg (7): arm64: Add framework to turn IPI as NMI irqchip/gic-v3: Enable support for SGIs to act as NMIs arm64: smp: Assign and setup an IPI as NMI nmi: backtrace: Allow runtime arch specific override arm64: ipi_nmi: Add support for NMI backtrace kgdb: Expose default CPUs roundup fallback mechanism arm64: kgdb: Roundup cpus using IPI as NMI arch/arm/include/asm/irq.h | 2 +- arch/arm/kernel/smp.c | 3 +- arch/arm64/include/asm/irq.h | 6 +++ arch/arm64/include/asm/nmi.h | 17 +++++++ arch/arm64/kernel/Makefile | 2 +- arch/arm64/kernel/ipi_nmi.c | 84 ++++++++++++++++++++++++++++++++ arch/arm64/kernel/kgdb.c | 18 +++++++ arch/arm64/kernel/smp.c | 8 +++ arch/mips/include/asm/irq.h | 2 +- arch/mips/kernel/process.c | 3 +- arch/powerpc/include/asm/nmi.h | 7 +++ arch/powerpc/kernel/stacktrace.c | 3 +- arch/sparc/include/asm/irq_64.h | 2 +- arch/sparc/kernel/process_64.c | 4 +- arch/x86/include/asm/irq.h | 2 +- arch/x86/kernel/apic/hw_nmi.c | 3 +- drivers/irqchip/irq-gic-v3.c | 29 ++++++++--- include/linux/kgdb.h | 12 +++++ include/linux/nmi.h | 12 ++--- kernel/debug/debug_core.c | 8 ++- 20 files changed, 200 insertions(+), 27 deletions(-) create mode 100644 arch/arm64/include/asm/nmi.h create mode 100644 arch/arm64/kernel/ipi_nmi.c -- 2.34.1

2 8

[PATCH OLK-5.10 0/2] perf/core: Fix CVE-2023-6931
by Yang Jihong 25 Dec '23

25 Dec '23

Mark Rutland (1): perf: Fix perf_event_validate_size() lockdep splat Peter Zijlstra (1): perf: Fix perf_event_validate_size() kernel/events/core.c | 67 ++++++++++++++++++++++++++++++-------------- 1 file changed, 46 insertions(+), 21 deletions(-) -- 2.34.1

2 3

[PATCH V3 OLK-6.6 0/5] ubi: Enhance fault injection capability for the UBI driver
by ZhaoLong Wang 25 Dec '23

25 Dec '23

CONFIG Dependency CONFIG_MTD=y CONFIG_MTD_NAND_NANDSIM=m CONFIG_MTD_UBI=m CONFIG_FAULT_INJECTION_DEBUG_FS=y CONFIG_MTD_PARTITIONED_MASTER The existing fault injection capability of UBI is too simple. It uses hard-coded fault probability values and lacks other configurable options. As a result, these interfaces are difficult to use when digging defects in the abnormal path of code and reproducing some problems. The kernel provides a powerful fault injection framework, which provides rich configurable fault injection attributes during runtime. So it can be used to improve the fault injection capability of the UBI driver. This series of patches refactor the existing fault injection interface and add some fault injection types to help testers and developers find potential problems in the code. This series of patches enhance the existing fault injection interface and retain the old debugfs interface, and add some fault injection types to help testers and developers Look for potential problems in the code. v1 -> v2: Delete the redundant semicolon of the first patch. v2 -> v3: Completely checked and fixed the English syntax errors in the patch. ZhaoLong Wang (5): ubi: Use the fault injection framework to enhance the fault injection capability ubi: Split io_failures into write_failure and erase_failure ubi: Add six fault injection type for testing ubi: Reserve sufficient buffer length for the input mask mtd: Add several functions to the fail_function list drivers/mtd/mtdcore.c | 5 + drivers/mtd/ubi/Kconfig | 9 ++ drivers/mtd/ubi/debug.c | 108 ++++++++++++-- drivers/mtd/ubi/debug.h | 304 +++++++++++++++++++++++++++++++++++++--- drivers/mtd/ubi/io.c | 86 +++++++++++- drivers/mtd/ubi/ubi.h | 45 +++--- 6 files changed, 498 insertions(+), 59 deletions(-) -- 2.39.2

2 6

[PATCH OLK-6.6 0/7] arm64: Add framework to turn IPI as NMI
by Liao Chen 25 Dec '23

25 Dec '23

Config Dependencies: CONFIG_PSEUDO_NMI=y CONFIG_LOCKUP_DETECTOR=y CONFIG_SOFTLOCKUP_DETECTOR=y CONFIG_LKDTM=y CONFIG_HAVE_ARCH_KGDB=y CONFIG_KGDB=y CONFIG_KGDB_HONOUR_BLOCKLIST=y CONFIG_KGDB_SERIAL_CONSOLE=y CONFIG_KGDB_KDB=y Sumit Garg (7): arm64: Add framework to turn IPI as NMI irqchip/gic-v3: Enable support for SGIs to act as NMIs arm64: smp: Assign and setup an IPI as NMI nmi: backtrace: Allow runtime arch specific override arm64: ipi_nmi: Add support for NMI backtrace kgdb: Expose default CPUs roundup fallback mechanism arm64: kgdb: Roundup cpus using IPI as NMI arch/arm/include/asm/irq.h | 2 +- arch/arm/kernel/smp.c | 3 +- arch/arm64/include/asm/irq.h | 6 +++ arch/arm64/include/asm/nmi.h | 17 +++++++ arch/arm64/kernel/Makefile | 2 +- arch/arm64/kernel/ipi_nmi.c | 84 ++++++++++++++++++++++++++++++++ arch/arm64/kernel/kgdb.c | 18 +++++++ arch/arm64/kernel/smp.c | 8 +++ arch/mips/include/asm/irq.h | 2 +- arch/mips/kernel/process.c | 3 +- arch/powerpc/include/asm/nmi.h | 7 +++ arch/powerpc/kernel/stacktrace.c | 3 +- arch/sparc/include/asm/irq_64.h | 2 +- arch/sparc/kernel/process_64.c | 4 +- arch/x86/include/asm/irq.h | 2 +- arch/x86/kernel/apic/hw_nmi.c | 3 +- drivers/irqchip/irq-gic-v3.c | 29 ++++++++--- include/linux/kgdb.h | 12 +++++ include/linux/nmi.h | 12 ++--- kernel/debug/debug_core.c | 8 ++- 20 files changed, 200 insertions(+), 27 deletions(-) create mode 100644 arch/arm64/include/asm/nmi.h create mode 100644 arch/arm64/kernel/ipi_nmi.c -- 2.34.1

2 8

[PATCH OLK-6.6 v3 0/2] optimize inlining
by Yuntao Liu 25 Dec '23

25 Dec '23

*** BLURB HERE *** Guo Xuenan (2): Revert "compiler: remove CONFIG_OPTIMIZE_INLINING entirely" make OPTIMIZE_INLINING config editable arch/arm64/kvm/sys_regs.h | 5 ++++ arch/x86/configs/i386_defconfig | 1 + arch/x86/configs/x86_64_defconfig | 1 + .../net/ethernet/mellanox/mlx5/core/health.c | 24 +++++++++++++++++++ .../ethernet/mellanox/mlx5/core/mlx5_core.h | 24 ------------------- .../pci/hive_isp_css_include/print_support.h | 4 ++++ include/linux/compiler_types.h | 8 +++++++ include/trace/trace_events.h | 2 +- kernel/configs/tiny.config | 1 + lib/Kconfig.debug | 13 ++++++++++ 10 files changed, 58 insertions(+), 25 deletions(-) -- 2.34.1

2 3

[PATCH V3 OLK-6.6 0/5] ubi: Enhance fault injection capability for the UBI driver
by ZhaoLong Wang 25 Dec '23

25 Dec '23

CONFIG Dependency CONFIG_MTD=y CONFIG_MTD_NAND_NANDSIM=m CONFIG_MTD_UBI=m CONFIG_FAULT_INJECTION_DEBUG_FS=y CONFIG_MTD_PARTITIONED_MASTER The existing fault injection capability of UBI is too simple. It uses hard-coded fault probability values and lacks other configurable options. As a result, these interfaces are difficult to use when digging defects in the abnormal path of code and reproducing some problems. The kernel provides a powerful fault injection framework, which provides rich configurable fault injection attributes during runtime. So it can be used to improve the fault injection capability of the UBI driver. This series of patches refactor the existing fault injection interface and add some fault injection types to help testers and developers find potential problems in the code. This series of patches enhance the existing fault injection interface and retain the old debugfs interface, and add some fault injection types to help testers and developers Look for potential problems in the code. v1 -> v2: Delete the redundant semicolon of the first patch. v2 -> v3: Completely checked and fixed the English syntax errors in the patch. ZhaoLong Wang (5): ubi: Use the fault injection framework to enhance the fault injection capability ubi: Split io_failures into write_failure and erase_failure ubi: Add six fault injection type for testing ubi: Reserve sufficient buffer length for the input mask mtd: Add several functions to the fail_function list drivers/mtd/mtdcore.c | 5 + drivers/mtd/ubi/Kconfig | 9 ++ drivers/mtd/ubi/debug.c | 107 ++++++++++++-- drivers/mtd/ubi/debug.h | 304 +++++++++++++++++++++++++++++++++++++--- drivers/mtd/ubi/io.c | 86 +++++++++++- drivers/mtd/ubi/ubi.h | 45 +++--- 6 files changed, 497 insertions(+), 59 deletions(-) -- 2.39.2

2 6

[PATCH OLK-6.6 v2 0/9] Support dynamic affinity scheduler
by Hui Tang 25 Dec '23

25 Dec '23

patch 1->7: Introduce dynamic affinity for cfs scheduler. patch 8->9: Tiny bugfix. v1->v2: * move sysctl interface to fair.c Hui Tang (7): sched: Introduce dynamic affinity for cfs scheduler cpuset: Introduce new interface for scheduler dynamic affinity sched: Adjust wakeup cpu range according CPU util dynamicly sched: Adjust cpu allowed in load balance dynamicly sched: Add statistics for scheduler dynamic affinity sched: Add cmdline for dynamic affinity config: enable CONFIG_QOS_SCHED_DYNAMIC_AFFINITY by default zhangwei123171 (2): sched/fair: Remove invalid cpu selection logic in dynamic affinity sched/fair: Modify idle cpu judgment in dynamic affinity arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + fs/proc/base.c | 73 ++++++++++ include/linux/sched.h | 22 +++ init/Kconfig | 10 ++ init/init_task.c | 3 + kernel/cgroup/cpuset.c | 153 ++++++++++++++++++++- kernel/fork.c | 16 +++ kernel/sched/core.c | 98 +++++++++++++ kernel/sched/debug.c | 6 + kernel/sched/fair.c | 183 +++++++++++++++++++++++++ kernel/sched/features.h | 7 + 12 files changed, 572 insertions(+), 1 deletion(-) -- 2.34.1

1 0

[PATCH OLK-6.6 v4] blk-throttle: enable hierarchical throttle in cgroup v1
by Yu Kuai 25 Dec '23

25 Dec '23

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8QYR1 CVE: NA ----------------------------------------------- blkio subsytem is not under default hierarchy in cgroup v1 by default, which means configurations will only be effective on current cgroup for io throttle. This patch introduces a new feature that enable default hierarchy for io throttle, which means configurations will be effective on child cgroups. Such feature is disabled by default, and can be enabled by: 1) set CONFIG_BLK_DEV_SUPPORT_LEGACY_GLOBAL_LIMIT, then 2) adding "blkcg_global_limit=1" or "blkcg_global_limit=Y" or "blkcg_global_limit=y" in boot cmd; Signed-off-by: Yu Kuai <yukuai3(a)huawei.com> --- arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + block/Kconfig | 11 ++++++++++ block/blk-throttle.c | 28 +++++++++++++++++++++++++- 4 files changed, 40 insertions(+), 1 deletion(-) diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 33ba39711884..2422922f27e7 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -857,6 +857,7 @@ CONFIG_BLK_DEV_INTEGRITY_T10=m CONFIG_BLK_DEV_ZONED=y CONFIG_BLK_DEV_THROTTLING=y # CONFIG_BLK_DEV_THROTTLING_LOW is not set +CONFIG_BLK_DEV_SUPPORT_LEGACY_GLOBAL_LIMIT=y CONFIG_BLK_WBT=y CONFIG_BLK_WBT_MQ=y # CONFIG_BLK_CGROUP_IOLATENCY is not set diff --git a/arch/x86/configs/openeuler_defconfig b/arch/x86/configs/openeuler_defconfig index 44040b835333..e5f605531186 100644 --- a/arch/x86/configs/openeuler_defconfig +++ b/arch/x86/configs/openeuler_defconfig @@ -927,6 +927,7 @@ CONFIG_BLK_DEV_INTEGRITY_T10=m CONFIG_BLK_DEV_ZONED=y CONFIG_BLK_DEV_THROTTLING=y # CONFIG_BLK_DEV_THROTTLING_LOW is not set +CONFIG_BLK_DEV_SUPPORT_LEGACY_GLOBAL_LIMIT=y CONFIG_BLK_WBT=y CONFIG_BLK_WBT_MQ=y # CONFIG_BLK_CGROUP_IOLATENCY is not set diff --git a/block/Kconfig b/block/Kconfig index ca04b657e058..03b53a50939f 100644 --- a/block/Kconfig +++ b/block/Kconfig @@ -131,6 +131,17 @@ config BLK_DEV_THROTTLING_LOW Note, this is an experimental interface and could be changed someday. +config BLK_DEV_SUPPORT_LEGACY_GLOBAL_LIMIT + bool "Block layer global limit in cgroup v1" + depends on BLK_DEV_THROTTLING + default n + help + Blkio subsytem is not under default hierarchy in cgroup v1 by default, + enabling this will support globlal limit in cgroup v1. + + Note, a cmdline "blkcg_global_limit=1" is still required to enabled this + feature. + config BLK_WBT bool "Enable support for block device writeback throttling" help diff --git a/block/blk-throttle.c b/block/blk-throttle.c index 13e4377a8b28..76a54f43135c 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -41,6 +41,31 @@ /* A workqueue to queue throttle related work */ static struct workqueue_struct *kthrotld_workqueue; +#ifdef CONFIG_BLK_DEV_SUPPORT_LEGACY_GLOBAL_LIMIT +/* True if global limit is enabled in cgroup v1 */ +static bool global_limit; + +static inline bool blkcg_global_limit_enabled(void) +{ + return global_limit; +} + +static int __init setup_global_limit(char *str) +{ + if (!strcmp(str, "1") || !strcmp(str, "Y") || !strcmp(str, "y")) + global_limit = true; + + return 1; +} + +__setup("blkcg_global_limit=", setup_global_limit); + +#else +static inline bool blkcg_global_limit_enabled(void) +{ + return false; +} +#endif #define rb_entry_tg(node) rb_entry((node), struct throtl_grp, rb_node) /* We measure latency for request size from <= 4k to >= 1M */ @@ -405,7 +430,8 @@ static void throtl_pd_init(struct blkg_policy_data *pd) * regardless of the position of the group in the hierarchy. */ sq->parent_sq = &td->service_queue; - if (cgroup_subsys_on_dfl(io_cgrp_subsys) && blkg->parent) + if ((cgroup_subsys_on_dfl(io_cgrp_subsys) || + blkcg_global_limit_enabled()) && blkg->parent) sq->parent_sq = &blkg_to_tg(blkg->parent)->service_queue; tg->td = td; } -- 2.39.2

2 1

[PATCH V3 OLK-6.6 0/5] ubi: Enhance fault injection capability for the UBI driver
by ZhaoLong Wang 25 Dec '23

25 Dec '23

CONFIG Dependency CONFIG_MTD=y CONFIG_MTD_NAND_NANDSIM=m CONFIG_MTD_UBI=m CONFIG_FAULT_INJECTION_DEBUG_FS=y CONFIG_MTD_PARTITIONED_MASTER The existing fault injection capability of UBI is too simple. It uses hard-coded fault probability values and lacks other configurable options. As a result, these interfaces are difficult to use when digging defects in the abnormal path of code and reproducing some problems. The kernel provides a powerful fault injection framework, which provides rich configurable fault injection attributes during runtime. So it can be used to improve the fault injection capability of the UBI driver. This series of patches refactor the existing fault injection interface and add some fault injection types to help testers and developers find potential problems in the code. This series of patches enhance the existing fault injection interface and retain the old debugfs interface, and add some fault injection types to help testers and developers Look for potential problems in the code. ZhaoLong Wang (5): ubi: Use the fault injection framework to enhance the fault injection capability ubi: Split io_failures into write_failure and erase_failure ubi: Add six fault injection type for testing ubi: Reserve sufficient buffer length for the input mask mtd: Add several functions to the fail_function list ZhaoLong Wang (5): ubi: Use the fault injection framework to enhance the fault injection capability ubi: Split io_failures into write_failure and erase_failure ubi: Add six fault injection type for testing ubi: Reserve sufficient buffer length for the input mask mtd: Add several functions to the fail_function list drivers/mtd/mtdcore.c | 5 + drivers/mtd/ubi/Kconfig | 9 ++ drivers/mtd/ubi/debug.c | 107 ++++++++++++-- drivers/mtd/ubi/debug.h | 304 +++++++++++++++++++++++++++++++++++++--- drivers/mtd/ubi/io.c | 86 +++++++++++- drivers/mtd/ubi/ubi.h | 45 +++--- 6 files changed, 497 insertions(+), 59 deletions(-) -- 2.39.2

2 6

[PATCH OLK-6.6] memcg: support ksm merge any mode per cgroup
by Nanyong Sun 25 Dec '23

25 Dec '23

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8OIQR ---------------------------------------------------------------------- Add control file "memory.ksm" to enable ksm per cgroup. Echo to 1 will set all tasks currently in the cgroup to ksm merge any mode, which means ksm gets enabled for all vma's of a process. Meanwhile echo to 0 will disable ksm for them and unmerge the merged pages. Cat the file will show the above state and ksm related profits of this cgroup. Signed-off-by: Nanyong Sun <sunnanyong(a)huawei.com> --- .../admin-guide/cgroup-v1/memory.rst | 1 + mm/memcontrol.c | 110 +++++++++++++++++- 2 files changed, 109 insertions(+), 2 deletions(-) diff --git a/Documentation/admin-guide/cgroup-v1/memory.rst b/Documentation/admin-guide/cgroup-v1/memory.rst index edd795855d68..66ae60dead2e 100644 --- a/Documentation/admin-guide/cgroup-v1/memory.rst +++ b/Documentation/admin-guide/cgroup-v1/memory.rst @@ -109,6 +109,7 @@ Brief summary of control files. memory.kmem.tcp.failcnt show the number of tcp buf memory usage hits limits memory.kmem.tcp.max_usage_in_bytes show max tcp buf memory usage recorded + memory.ksm set/show ksm merge any mode ==================================== ========================================== 1. History diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 1f3b893bb576..e5782248749d 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -73,6 +73,7 @@ #include <linux/uaccess.h> #include <trace/events/vmscan.h> +#include <linux/ksm.h> struct cgroup_subsys memory_cgrp_subsys __read_mostly; EXPORT_SYMBOL(memory_cgrp_subsys); @@ -242,10 +243,15 @@ enum res_type { iter != NULL; \ iter = mem_cgroup_iter(NULL, iter, NULL)) +static inline bool __task_is_dying(struct task_struct *task) +{ + return tsk_is_oom_victim(task) || fatal_signal_pending(task) || + (task->flags & PF_EXITING); +} + static inline bool task_is_dying(void) { - return tsk_is_oom_victim(current) || fatal_signal_pending(current) || - (current->flags & PF_EXITING); + return __task_is_dying(current); } /* Some nice accessors for the vmpressure. */ @@ -5101,6 +5107,98 @@ static int mem_cgroup_slab_show(struct seq_file *m, void *p) } #endif +#ifdef CONFIG_KSM +static int memcg_set_ksm_for_tasks(struct mem_cgroup *memcg, bool enable) +{ + struct task_struct *task; + struct mm_struct *mm; + struct css_task_iter it; + int ret = 0; + + css_task_iter_start(&memcg->css, CSS_TASK_ITER_PROCS, &it); + while (!ret && (task = css_task_iter_next(&it))) { + if (__task_is_dying(task)) + continue; + + mm = get_task_mm(task); + if (!mm) + continue; + + if (mmap_write_lock_killable(mm)) { + mmput(mm); + continue; + } + + if (enable) + ret = ksm_enable_merge_any(mm); + else + ret = ksm_disable_merge_any(mm); + + mmap_write_unlock(mm); + mmput(mm); + } + css_task_iter_end(&it); + + return ret; +} + +static int memory_ksm_show(struct seq_file *m, void *v) +{ + unsigned long ksm_merging_pages = 0; + unsigned long ksm_rmap_items = 0; + long ksm_process_profits = 0; + unsigned int tasks = 0; + struct task_struct *task; + struct mm_struct *mm; + struct css_task_iter it; + struct mem_cgroup *memcg = mem_cgroup_from_seq(m); + + css_task_iter_start(&memcg->css, CSS_TASK_ITER_PROCS, &it); + while ((task = css_task_iter_next(&it))) { + mm = get_task_mm(task); + if (!mm) + continue; + + if (test_bit(MMF_VM_MERGE_ANY, &mm->flags)) + tasks++; + + ksm_rmap_items += mm->ksm_rmap_items; + ksm_merging_pages += mm->ksm_merging_pages; + ksm_process_profits += ksm_process_profit(mm); + mmput(mm); + } + css_task_iter_end(&it); + + seq_printf(m, "merge any tasks: %u\n", tasks); + seq_printf(m, "ksm_rmap_items %lu\n", ksm_rmap_items); + seq_printf(m, "ksm_merging_pages %lu\n", ksm_merging_pages); + seq_printf(m, "ksm_process_profits %ld\n", ksm_process_profits); + return 0; +} + +static ssize_t memory_ksm_write(struct kernfs_open_file *of, char *buf, + size_t nbytes, loff_t off) +{ + bool enable; + int err; + struct mem_cgroup *memcg = mem_cgroup_from_css(of_css(of)); + + buf = strstrip(buf); + if (!buf) + return -EINVAL; + + err = kstrtobool(buf, &enable); + if (err) + return err; + + err = memcg_set_ksm_for_tasks(memcg, enable); + if (err) + return err; + + return nbytes; +} +#endif /* CONFIG_KSM */ + static int memory_stat_show(struct seq_file *m, void *v); #ifdef CONFIG_MEMCG_V1_RECLAIM @@ -5417,6 +5515,14 @@ static struct cftype mem_cgroup_legacy_files[] = { .seq_show = wb_blkio_show, .write = wb_blkio_write, }, +#endif +#ifdef CONFIG_KSM + { + .name = "ksm", + .flags = CFTYPE_NOT_ON_ROOT, + .write = memory_ksm_write, + .seq_show = memory_ksm_show, + }, #endif { }, /* terminate */ }; -- 2.25.1

2 1

[PATCH OLK-5.10] tty: n_gsm: fix the UAF caused by race condition in gsm_cleanup_mux
by Yi Yang 25 Dec '23

25 Dec '23

mainline inclusion from mainline-v6.5-rc7 commit 3c4f8333b582487a2d1e02171f1465531cde53e3 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8QFUO CVE: CVE-2023-6546 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- In commit 9b9c8195f3f0 ("tty: n_gsm: fix UAF in gsm_cleanup_mux"), the UAF problem is not completely fixed. There is a race condition in gsm_cleanup_mux(), which caused this UAF. The UAF problem is triggered by the following race: task[5046] task[5054] ----------------------- ----------------------- gsm_cleanup_mux(); dlci = gsm->dlci[0]; mutex_lock(&gsm->mutex); gsm_cleanup_mux(); dlci = gsm->dlci[0]; //Didn't take the lock gsm_dlci_release(gsm->dlci[i]); gsm->dlci[i] = NULL; mutex_unlock(&gsm->mutex); mutex_lock(&gsm->mutex); dlci->dead = true; //UAF Fix it by assigning values after mutex_lock(). Link: https://syzkaller.appspot.com/text?tag=CrashReport&x=176188b5a80000 Cc: stable <stable(a)kernel.org> Fixes: 9b9c8195f3f0 ("tty: n_gsm: fix UAF in gsm_cleanup_mux") Fixes: aa371e96f05d ("tty: n_gsm: fix restart handling via CLD command") Signed-off-by: Yi Yang <yiyang13(a)huawei.com> Co-developed-by: Qiumiao Zhang <zhangqiumiao1(a)huawei.com> Signed-off-by: Qiumiao Zhang <zhangqiumiao1(a)huawei.com> Link: https://lore.kernel.org/r/20230811031121.153237-1-yiyang13@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Yi Yang <yiyang13(a)huawei.com> --- drivers/tty/n_gsm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 23b014b8c919..3693ad9f4521 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -2159,12 +2159,13 @@ static void gsm_error(struct gsm_mux *gsm, static void gsm_cleanup_mux(struct gsm_mux *gsm, bool disc) { int i; - struct gsm_dlci *dlci = gsm->dlci[0]; + struct gsm_dlci *dlci; struct gsm_msg *txq, *ntxq; gsm->dead = true; mutex_lock(&gsm->mutex); + dlci = gsm->dlci[0]; if (dlci) { if (disc && dlci->state != DLCI_CLOSED) { gsm_dlci_begin_close(dlci); -- 2.25.1

2 1

[PATCH openEuler-1.0-LTS] tty: n_gsm: fix the UAF caused by race condition in gsm_cleanup_mux
by Yi Yang 25 Dec '23

25 Dec '23

mainline inclusion from mainline-v6.5-rc7 commit 3c4f8333b582487a2d1e02171f1465531cde53e3 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8QFUO CVE: CVE-2023-6546 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- In commit 9b9c8195f3f0 ("tty: n_gsm: fix UAF in gsm_cleanup_mux"), the UAF problem is not completely fixed. There is a race condition in gsm_cleanup_mux(), which caused this UAF. The UAF problem is triggered by the following race: task[5046] task[5054] ----------------------- ----------------------- gsm_cleanup_mux(); dlci = gsm->dlci[0]; mutex_lock(&gsm->mutex); gsm_cleanup_mux(); dlci = gsm->dlci[0]; //Didn't take the lock gsm_dlci_release(gsm->dlci[i]); gsm->dlci[i] = NULL; mutex_unlock(&gsm->mutex); mutex_lock(&gsm->mutex); dlci->dead = true; //UAF Fix it by assigning values after mutex_lock(). Link: https://syzkaller.appspot.com/text?tag=CrashReport&x=176188b5a80000 Cc: stable <stable(a)kernel.org> Fixes: 9b9c8195f3f0 ("tty: n_gsm: fix UAF in gsm_cleanup_mux") Fixes: aa371e96f05d ("tty: n_gsm: fix restart handling via CLD command") Signed-off-by: Yi Yang <yiyang13(a)huawei.com> Co-developed-by: Qiumiao Zhang <zhangqiumiao1(a)huawei.com> Signed-off-by: Qiumiao Zhang <zhangqiumiao1(a)huawei.com> Link: https://lore.kernel.org/r/20230811031121.153237-1-yiyang13@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> conflicts: drivers/tty/n_gsm.c Signed-off-by: Yi Yang <yiyang13(a)huawei.com> --- drivers/tty/n_gsm.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 3f08ad7e629a..c1851fd9149c 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -2063,7 +2063,7 @@ static int gsm_disconnect(struct gsm_mux *gsm) static void gsm_cleanup_mux(struct gsm_mux *gsm) { int i; - struct gsm_dlci *dlci = gsm->dlci[0]; + struct gsm_dlci *dlci; struct gsm_msg *txq, *ntxq; gsm->dead = 1; @@ -2082,11 +2082,12 @@ static void gsm_cleanup_mux(struct gsm_mux *gsm) del_timer_sync(&gsm->t2_timer); /* Now we are sure T2 has stopped */ + mutex_lock(&gsm->mutex); + dlci = gsm->dlci[0]; if (dlci) dlci->dead = 1; /* Free up any link layer users */ - mutex_lock(&gsm->mutex); for (i = 0; i < NUM_DLCI; i++) if (gsm->dlci[i]) gsm_dlci_release(gsm->dlci[i]); -- 2.25.1

2 1

[PATCH V3 OLK-6.6 0/4] Fix smmu pgtable prfetch and add support
by Zhang Zekun 25 Dec '23

25 Dec '23

Fix the pgtable prefetch problem, besides add some ras features which is used in ascend scenarios. v3: - Fix code check warnings v2: - issue new ISSUES for olk6.6 Zhang Jian (1): mm: export collect_procs() Zhang Zekun (3): iommu/arm-smmu-v3: Add a SYNC command to avoid broken page table prefetch mm: memory-failure: Directly return the task for specific use ACPI: APEI: Don't call notifier again in ts scenario arch/arm64/Kconfig | 13 +++++++++++++ arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/kernel/cpu_errata.c | 14 ++++++++++++++ arch/arm64/tools/cpucaps | 1 + drivers/acpi/apei/ghes.c | 3 +++ drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 20 ++++++++++++++++++++ include/linux/mm.h | 8 ++++++++ mm/Kconfig | 11 +++++++++++ mm/memory-failure.c | 13 +++++++++++++ 9 files changed, 84 insertions(+) -- 2.17.1

2 5

[PATCH] tty: n_gsm: fix the UAF caused by race condition in gsm_cleanup_mux
by Yi Yang 25 Dec '23

25 Dec '23

mainline inclusion from mainline-v6.5-rc7 commit 3c4f8333b582487a2d1e02171f1465531cde53e3 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8QFUO CVE: CVE-2023-6546 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- In commit 9b9c8195f3f0 ("tty: n_gsm: fix UAF in gsm_cleanup_mux"), the UAF problem is not completely fixed. There is a race condition in gsm_cleanup_mux(), which caused this UAF. The UAF problem is triggered by the following race: task[5046] task[5054] ----------------------- ----------------------- gsm_cleanup_mux(); dlci = gsm->dlci[0]; mutex_lock(&gsm->mutex); gsm_cleanup_mux(); dlci = gsm->dlci[0]; //Didn't take the lock gsm_dlci_release(gsm->dlci[i]); gsm->dlci[i] = NULL; mutex_unlock(&gsm->mutex); mutex_lock(&gsm->mutex); dlci->dead = true; //UAF Fix it by assigning values after mutex_lock(). Link: https://syzkaller.appspot.com/text?tag=CrashReport&x=176188b5a80000 Cc: stable <stable(a)kernel.org> Fixes: 9b9c8195f3f0 ("tty: n_gsm: fix UAF in gsm_cleanup_mux") Fixes: aa371e96f05d ("tty: n_gsm: fix restart handling via CLD command") Signed-off-by: Yi Yang <yiyang13(a)huawei.com> Co-developed-by: Qiumiao Zhang <zhangqiumiao1(a)huawei.com> Signed-off-by: Qiumiao Zhang <zhangqiumiao1(a)huawei.com> Link: https://lore.kernel.org/r/20230811031121.153237-1-yiyang13@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> conflicts: drivers/tty/n_gsm.c Signed-off-by: Yi Yang <yiyang13(a)huawei.com> --- drivers/tty/n_gsm.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 3f08ad7e629a..c1851fd9149c 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -2063,7 +2063,7 @@ static int gsm_disconnect(struct gsm_mux *gsm) static void gsm_cleanup_mux(struct gsm_mux *gsm) { int i; - struct gsm_dlci *dlci = gsm->dlci[0]; + struct gsm_dlci *dlci; struct gsm_msg *txq, *ntxq; gsm->dead = 1; @@ -2082,11 +2082,12 @@ static void gsm_cleanup_mux(struct gsm_mux *gsm) del_timer_sync(&gsm->t2_timer); /* Now we are sure T2 has stopped */ + mutex_lock(&gsm->mutex); + dlci = gsm->dlci[0]; if (dlci) dlci->dead = 1; /* Free up any link layer users */ - mutex_lock(&gsm->mutex); for (i = 0; i < NUM_DLCI; i++) if (gsm->dlci[i]) gsm_dlci_release(gsm->dlci[i]); -- 2.25.1

1 0

[PATCH V2 OLK-6.6 0/5] ubi: Enhance fault injection capability for the UBI driver
by ZhaoLong Wang 25 Dec '23

25 Dec '23

CONFIG Dependency CONFIG_MTD=y CONFIG_MTD_NAND_NANDSIM=m CONFIG_MTD_UBI=m CONFIG_FAULT_INJECTION_DEBUG_FS=y CONFIG_MTD_PARTITIONED_MASTER The existing fault injection capability of UBI is too simple. It uses hard-coded fault probability values and lacks other configurable options. As a result, these interfaces are difficult to use when digging defects in the abnormal path of code and reproducing some problems. The kernel provides a powerful fault injection framework, which provides rich configurable fault injection attributes during runtime. So it can be used to improve the fault injection capability of the UBI driver. This series of patches refactor the existing fault injection interface and add some fault injection types to help testers and developers find potential problems in the code. This series of patches enhance the existing fault injection interface and retain the old debugfs interface, and add some fault injection types to help testers and developers Look for potential problems in the code. ZhaoLong Wang (5): ubi: Use the fault injection framework to enhance the fault injection capability ubi: Split io_failures into write_failure and erase_failure ubi: Add six fault injection type for testing ubi: Reserve sufficient buffer length for the input mask mtd: Add several functions to the fail_function list ZhaoLong Wang (5): ubi: Use the fault injection framework to enhance the fault injection capability ubi: Split io_failures into write_failure and erase_failure ubi: Add six fault injection type for testing ubi: Reserve sufficient buffer length for the input mask mtd: Add several functions to the fail_function list drivers/mtd/mtdcore.c | 5 + drivers/mtd/ubi/Kconfig | 9 ++ drivers/mtd/ubi/debug.c | 107 ++++++++++++-- drivers/mtd/ubi/debug.h | 304 +++++++++++++++++++++++++++++++++++++--- drivers/mtd/ubi/io.c | 86 +++++++++++- drivers/mtd/ubi/ubi.h | 45 +++--- 6 files changed, 497 insertions(+), 59 deletions(-) -- 2.39.2

2 6

[PATCH V2 OLK-6.6 0/4] Fix smmu pgtable prfetch and add support
by Zhang Zekun 25 Dec '23

25 Dec '23

Fix the pgtable prefetch problem, besides add some ras features which is used in ascend scenarios. v2: - issue new ISSUES for olk6.6 Zhang Jian (1): mm: export collect_procs() Zhang Zekun (3): iommu/arm-smmu-v3: Add a SYNC command to avoid broken page table prefetch mm: memory-failure: Directly return the task for specific use ACPI: APEI: Don't call notifier again in ts senario arch/arm64/Kconfig | 13 +++++++++++++ arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/kernel/cpu_errata.c | 14 ++++++++++++++ arch/arm64/tools/cpucaps | 1 + drivers/acpi/apei/ghes.c | 3 +++ drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 20 ++++++++++++++++++++ include/linux/mm.h | 8 ++++++++ mm/Kconfig | 9 +++++++++ mm/memory-failure.c | 13 +++++++++++++ 9 files changed, 82 insertions(+) -- 2.17.1

2 5

[PATCH OLK-6.6 0/4] Fix smmu pgtable prfetch and add support
by Zhang Zekun 25 Dec '23

25 Dec '23

Fix the pgtable prefetch problem, besides add some ras features which is used in ascend scenarios. Zhang Jian (1): mm: export collect_procs() Zhang Zekun (3): iommu/arm-smmu-v3: Add a SYNC command to avoid broken page table prefetch mm: memory-failure: Directly return the task for specific use ACPI: APEI: Don't call notifier again in ts senario arch/arm64/Kconfig | 13 +++++++++++++ arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/kernel/cpu_errata.c | 14 ++++++++++++++ arch/arm64/tools/cpucaps | 1 + drivers/acpi/apei/ghes.c | 3 +++ drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 20 ++++++++++++++++++++ include/linux/mm.h | 8 ++++++++ mm/Kconfig | 9 +++++++++ mm/memory-failure.c | 13 +++++++++++++ 9 files changed, 82 insertions(+) -- 2.17.1

2 5