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[openeuler:openEuler-1.0-LTS 23662/23701] include/linux/thread_info.h:59:17: warning: 'b' may be used uninitialized
by kernel test robot 06 Sep '24

06 Sep '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 13b424f97ef548612c760cfd0892f96de96707e0 commit: b9f356e64a7eda411ba8b63df9d4c5e204f16025 [23662/23701] block-io-hierarchy: core hierarchy iodump implementation config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20240906/202409061840.VkS4KqE5-lkp@…) compiler: aarch64-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240906/202409061840.VkS4KqE5-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202409061840.VkS4KqE5-lkp@intel.com/ Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): In file included from include/asm-generic/preempt.h:5, from ./arch/arm64/include/generated/asm/preempt.h:1, from include/linux/preempt.h:81, from include/linux/spinlock.h:51, from include/linux/wait.h:9, from include/linux/wait_bit.h:8, from include/linux/fs.h:7, from include/linux/seq_file.h:11, from block/blk-io-hierarchy/iodump.c:14: In function 'check_object_size', inlined from 'check_copy_size' at include/linux/thread_info.h:90:2, inlined from 'copy_from_user' at include/linux/uaccess.h:143:6, inlined from 'threshold_store' at block/blk-io-hierarchy/iodump.c:240:6: >> include/linux/thread_info.h:59:17: warning: 'b' may be used uninitialized [-Wmaybe-uninitialized] 59 | __check_object_size(ptr, n, to_user); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/thread_info.h: In function 'threshold_store': include/linux/thread_info.h:52:13: note: by argument 1 of type 'const void *' to '__check_object_size' declared here 52 | extern void __check_object_size(const void *ptr, unsigned long n, | ^~~~~~~~~~~~~~~~~~~ block/blk-io-hierarchy/iodump.c:234:14: note: 'b' declared here 234 | char b[MAX_BUF_LEN + 1]; | ^ vim +/b +59 include/linux/thread_info.h 0f60a8efe4005ab Kees Cook 2016-07-12 50 f5509cc18daa7f8 Kees Cook 2016-06-07 51 #ifdef CONFIG_HARDENED_USERCOPY f5509cc18daa7f8 Kees Cook 2016-06-07 52 extern void __check_object_size(const void *ptr, unsigned long n, f5509cc18daa7f8 Kees Cook 2016-06-07 53 bool to_user); f5509cc18daa7f8 Kees Cook 2016-06-07 54 a85d6b8242dc78e Kees Cook 2016-09-07 55 static __always_inline void check_object_size(const void *ptr, unsigned long n, f5509cc18daa7f8 Kees Cook 2016-06-07 56 bool to_user) f5509cc18daa7f8 Kees Cook 2016-06-07 57 { 81409e9e2805881 Kees Cook 2016-08-31 58 if (!__builtin_constant_p(n)) f5509cc18daa7f8 Kees Cook 2016-06-07 @59 __check_object_size(ptr, n, to_user); f5509cc18daa7f8 Kees Cook 2016-06-07 60 } f5509cc18daa7f8 Kees Cook 2016-06-07 61 #else f5509cc18daa7f8 Kees Cook 2016-06-07 62 static inline void check_object_size(const void *ptr, unsigned long n, f5509cc18daa7f8 Kees Cook 2016-06-07 63 bool to_user) f5509cc18daa7f8 Kees Cook 2016-06-07 64 { } f5509cc18daa7f8 Kees Cook 2016-06-07 65 #endif /* CONFIG_HARDENED_USERCOPY */ f5509cc18daa7f8 Kees Cook 2016-06-07 66 :::::: The code at line 59 was first introduced by commit :::::: f5509cc18daa7f82bcc553be70df2117c8eedc16 mm: Hardened usercopy :::::: TO: Kees Cook <keescook(a)chromium.org> :::::: CC: Kees Cook <keescook(a)chromium.org> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-6.6 0/3] block, bfq: fix possible UAF for bfqq->bic with merge chain
by Yu Kuai 06 Sep '24

06 Sep '24

Yu Kuai (3): block, bfq: fix possible UAF for bfqq->bic with merge chain block, bfq: choose the last bfqq from merge chain in bfq_setup_cooperator() block, bfq: don't break merge chain in bfq_split_bfqq() block/bfq-iosched.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) -- 2.39.2

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[PATCH OLK-6.6 0/3] Some patches of Net are incorporated into olk-6.6 as follows:
by Jijie Shao 06 Sep '24

06 Sep '24

From: Xinghai Cen <cenxinghai(a)h-partners.com> Some patches of Net are incorporated into olk-6.6 as follows: Jian Shen (2): net: hns3: don't auto enable misc vector net: hns3: initialize reset_timer before hclgevf_misc_irq_init() Jie Wang (1): net: hns3: fix kernel crash when 1588 is sent on HIP08 devices .../net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 11 +++++++---- .../net/ethernet/hisilicon/hns3/hns3pf/hclge_ptp.c | 3 +++ .../net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 2 +- 3 files changed, 11 insertions(+), 5 deletions(-) -- 2.33.0

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[openeuler:openEuler-1.0-LTS] BUILD SUCCESS 13b424f97ef548612c760cfd0892f96de96707e0
by kernel test robot 06 Sep '24

06 Sep '24

tree/branch: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS branch HEAD: 13b424f97ef548612c760cfd0892f96de96707e0 !11418 md/raid5: avoid BUG_ON() while continue reshape after reassembling Warning ids grouped by kconfigs: recent_errors |-- x86_64-allyesconfig | `-- block-blk-io-hierarchy-iodump.c:warning:no-previous-prototype-for-function-__bio_stage_hierarchy_start `-- x86_64-buildonly-randconfig-001-20240906 |-- block-.tmp_blk-mq.o:warning:objtool:blk_mq_unfreeze_queue:unreachable-instruction |-- drivers-dax-.tmp_bus.o:warning:objtool:__dax_driver_register:unreachable-instruction |-- drivers-gpu-drm-.tmp_drm_atomic_helper.o:warning:objtool:drm_atomic_helper_check_modeset:unreachable-instruction |-- drivers-nvdimm-.tmp_namespace_devs.o:warning:objtool:nd_region_register_namespaces:unreachable-instruction |-- net-bpf-.tmp_test_run.o:warning:objtool:bpf_prog_test_run_skb:unreachable-instruction |-- net-can-j1939-.tmp_socket.o:warning:objtool:j1939_sk_queue_activate_next:unreachable-instruction `-- net-can-j1939-.tmp_transport.o:warning:objtool:j1939_xtp_abort_to_errno:unreachable-instruction elapsed time: 1242m configs tested: 35 configs skipped: 138 The following configs have been built successfully. More configs may be tested in the coming days. tested configs: arm64 allmodconfig gcc-14.1.0 arm64 allnoconfig gcc-14.1.0 arm64 defconfig gcc-14.1.0 arm64 randconfig-001-20240906 gcc-14.1.0 arm64 randconfig-002-20240906 gcc-14.1.0 arm64 randconfig-003-20240906 gcc-14.1.0 arm64 randconfig-004-20240906 gcc-14.1.0 x86_64 allnoconfig clang-18 x86_64 allyesconfig clang-18 x86_64 buildonly-randconfig-001-20240906 clang-18 x86_64 buildonly-randconfig-002-20240906 clang-18 x86_64 buildonly-randconfig-003-20240906 clang-18 x86_64 buildonly-randconfig-004-20240906 clang-18 x86_64 buildonly-randconfig-005-20240906 clang-18 x86_64 buildonly-randconfig-006-20240906 clang-18 x86_64 defconfig gcc-11 x86_64 randconfig-001-20240906 clang-18 x86_64 randconfig-002-20240906 gcc-12 x86_64 randconfig-003-20240906 gcc-12 x86_64 randconfig-004-20240906 gcc-12 x86_64 randconfig-005-20240906 gcc-12 x86_64 randconfig-006-20240906 gcc-12 x86_64 randconfig-011-20240906 clang-18 x86_64 randconfig-012-20240906 gcc-12 x86_64 randconfig-013-20240906 clang-18 x86_64 randconfig-014-20240906 clang-18 x86_64 randconfig-015-20240906 clang-18 x86_64 randconfig-016-20240906 clang-18 x86_64 randconfig-071-20240906 gcc-12 x86_64 randconfig-072-20240906 gcc-12 x86_64 randconfig-073-20240906 clang-18 x86_64 randconfig-074-20240906 gcc-12 x86_64 randconfig-075-20240906 clang-18 x86_64 randconfig-076-20240906 gcc-12 x86_64 rhel-8.3-rust clang-18 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH] ACPI/HMAT: Fix compile error when CONFIG_ACPI_HMAT is not enabled
by Zhang Zekun 06 Sep '24

06 Sep '24

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAPHFQ ------------------------------------------------ Fix compile error when CONFIG_ACPI_HMAT is not enabled: j ../drivers/acpi/acpi_memhotplug.c: In function ‘acpi_memory_enable_device’: ../drivers/acpi/acpi_memhotplug.c:236:5: error: implicit declaration of function ‘hmat_restore_target’; did you mean ‘mte_restore_tags’? [-Werror=implicit-function-declaration] hmat_restore_target(node); ^~~~~~~~~~~~~~~~~~~ mte_restore_tags Fixes: 2e1b00fcf1e3 ("ACPI/HMAT: Add missing locality information for hot-added device") Signed-off-by: Zhang Zekun <zhangzekun11(a)huawei.com> --- drivers/acpi/internal.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 82444a4cbf15..3a7cc297c63d 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -265,6 +265,10 @@ void acpi_init_lpit(void); #else static inline void acpi_init_lpit(void) { } #endif +#ifdef CONFIG_ACPI_HMAT void hmat_restore_target(int nid); +#else +static inline void hmat_restore_target(int nid) {} +#endif #endif /* _ACPI_INTERNAL_H_ */ -- 2.17.1

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[PATCH OLK-5.10 0/1] zap_pid_ns_processes: clear TIF_NOTIFY_SIGNAL along with TIF_SIGPENDING
by Chen Ridong 06 Sep '24

06 Sep '24

zap_pid_ns_processes: clear TIF_NOTIFY_SIGNAL along with TIF_SIGPENDING Oleg Nesterov (1): zap_pid_ns_processes: clear TIF_NOTIFY_SIGNAL along with TIF_SIGPENDING kernel/pid_namespace.c | 1 + 1 file changed, 1 insertion(+) -- 2.34.1

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[PATCH openEuler-22.03-LTS-SP1 0/1] zap_pid_ns_processes: clear TIF_NOTIFY_SIGNAL along with TIF_SIGPENDING
by Chen Ridong 06 Sep '24

06 Sep '24

zap_pid_ns_processes: clear TIF_NOTIFY_SIGNAL along with TIF_SIGPENDING Oleg Nesterov (1): zap_pid_ns_processes: clear TIF_NOTIFY_SIGNAL along with TIF_SIGPENDING kernel/pid_namespace.c | 1 + 1 file changed, 1 insertion(+) -- 2.34.1

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[PATCH OLK-5.10 v2 00/23] mm/block: add bdi sysfs knobs
by Yifan Qiao 06 Sep '24

06 Sep '24

At meta network block devices (nbd) are used to implement remote block storage. In testing and during production it has been observed that these network block devices can consume a huge portion of the dirty writeback cache and writeback can take a considerable time. To be able to give stricter limits, I'm proposing the following changes: introduce strictlimit knob Currently the max_ratio knob exists to limit the dirty_memory. However this knob only applies once (dirty_ratio + dirty_background_ratio) / 2 has been reached. With the BDI_CAP_STRICTLIMIT flag, the max_ratio can be applied without reaching that limit. This change exposes that knob. This knob can also be useful for NFS, fuse filesystems and USB devices. Use part of 1000000 internal calculation The max_ratio is based on percentage. With the current machine sizes percentage values can be very high (1% of a 256GB main memory is already 2.5GB). This change uses part of 1000000 instead of percentages for the internal calculations. Introduce two new sysfs knobs: min_bytes and max_bytes. Currently all calculations are based on ratio, but for a user it often more convenient to specify a limit in bytes. The new knobs will not store bytes values, instead they will translate the byte value to a corresponding ratio. As the internal values are now part of 1000, the ratio is closer to the specified value. However the value should be more seen as an approximation as it can fluctuate over time. Introduce two new sysfs knobs: min_ratio_fine and max_ratio_fine. The granularity for the existing sysfs bdi knobs min_ratio and max_ratio is based on percentage values. The new sysfs bdi knobs min_ratio_fine and max_ratio_fine allow to specify the ratio as part of 1 million. Chen Wandun (1): mm: rework calculation of bdi_min_ratio in bdi_set_min_ratio Jingbo Xu (2): mm: fix arithmetic for max_prop_frac when setting max_ratio mm: fix arithmetic for bdi min_ratio Stefan Roesch (20): mm: add bdi_set_strict_limit() function mm: add knob /sys/class/bdi/<bdi>/strict_limit mm: document /sys/class/bdi/<bdi>/strict_limit knob mm: use part per 1000000 for bdi ratios mm: add bdi_get_max_bytes() function mm: split off __bdi_set_max_ratio() function mm: add bdi_set_max_bytes() function mm: add knob /sys/class/bdi/<bdi>/max_bytes mm: document /sys/class/bdi/<bdi>/max_bytes knob mm: add bdi_get_min_bytes() function mm: split off __bdi_set_min_ratio() function mm: add bdi_set_min_bytes() function mm: add /sys/class/bdi/<bdi>/min_bytes knob mm: document /sys/class/bdi/<bdi>/min_bytes knob mm: add bdi_set_max_ratio_no_scale() function mm: add /sys/class/bdi/<bdi>/max_ratio_fine knob mm: document /sys/class/bdi/<bdi>/max_ratio_fine knob mm: add bdi_set_min_ratio_no_scale() function mm: add /sys/class/bdi/<bdi>/min_ratio_fine knob mm: document /sys/class/bdi/<bdi>/min_ratio_fine knob Documentation/ABI/testing/sysfs-class-bdi | 48 +++++++ include/linux/backing-dev.h | 10 ++ mm/backing-dev.c | 133 +++++++++++++++++++- mm/page-writeback.c | 147 +++++++++++++++++++--- 4 files changed, 321 insertions(+), 17 deletions(-) -- 2.39.2

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[openeuler:OLK-6.6 13863/13878] drivers/base/platform-msi.c:237: warning: Function parameter or member 'write_msi_msg' not described in 'platform_msi_domain_alloc_range_irqs'
by kernel test robot 06 Sep '24

06 Sep '24

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: ad51fadf8895f81201ef22e91984b57ed9b2f9af commit: ed007ade0cef81fb47328683b8a7eec5edfa8494 [13863/13878] virtcca feature: secure smmu init config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20240906/202409061150.PH2ggN81-lkp@…) compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240906/202409061150.PH2ggN81-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202409061150.PH2ggN81-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/base/platform-msi.c:237: warning: Function parameter or member 'write_msi_msg' not described in 'platform_msi_domain_alloc_range_irqs' vim +237 drivers/base/platform-msi.c 223 224 #ifdef CONFIG_HISI_VIRTCCA_HOST 225 /** 226 * platform_msi_domain_alloc_range_irqs - Allocate specific scope MSI interrupts for @dev 227 * @dev: The device for which to allocate interrupts 228 * @start: The start index of msi 229 * @end: The end index of msi 230 * 231 * %0 if alloc irqs success 232 * %error_code if alloc irqs failed 233 * %-EINVAL if platform_data is null 234 */ 235 int platform_msi_domain_alloc_range_irqs(struct device *dev, unsigned int start, 236 unsigned int end, irq_write_msi_msg_t write_msi_msg) > 237 { 238 int err; 239 240 if (!dev->msi.data->platform_data) 241 return -EINVAL; 242 243 dev->msi.data->platform_data->write_msg = write_msi_msg; 244 err = msi_domain_alloc_irqs_range(dev, MSI_DEFAULT_DOMAIN, start, end); 245 if (err) 246 platform_msi_free_priv_data(dev); 247 248 return err; 249 } 250 EXPORT_SYMBOL_GPL(platform_msi_domain_alloc_range_irqs); 251 #endif 252 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH] arm64: Add ARM64_HAS_LSE2 CPU capability
by Tian Tao 06 Sep '24

06 Sep '24

When FEAT_LSE2 is implemented and Bit 6 of sctlr_elx is nAA, the full name of the Not-aligned access. nAA bit has two values: 0b0 Unaligned accesses by the specified instructions generate an Alignment fault. 0b1 Unaligned accesses by the specified instructions do not generate an Alignment fault. this patch sets the nAA bit to 1,The following instructions will not generate an Alignment fault if all bytes being accessed are not within a single 16-byte quantity: • LDAPR, LDAPRH, LDAPUR, LDAPURH, LDAPURSH, LDAPURSW, LDAR, LDARH,LDLAR, LDLARH. • STLLR, STLLRH, STLR, STLRH, STLUR, and STLURH Signed-off-by: Tian Tao <tiantao6(a)hisilicon.com> --- arch/arm64/Kconfig | 10 ++++++++++ arch/arm64/include/asm/sysreg.h | 1 + arch/arm64/kernel/cpufeature.c | 18 ++++++++++++++++++ arch/arm64/tools/cpucaps | 1 + 4 files changed, 30 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 77d7ef0b16c2..bdeb2d897069 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -2023,6 +2023,16 @@ config ARM64_TLB_RANGE The feature introduces new assembly instructions, and they were support when binutils >= 2.30. +config ARM64_LSE2 + bool "Enable support for not-aligned access" + depends on AS_HAS_ARMV8_4 + help + LSE2 is an extension to the original LSE (Large System Extensions) feature, + introduced in ARMv8.4. + + Enable this feature will not generate an Alignment fault if all bytes being + accessed are not within a single 16-byte quantity. + endmenu # "ARMv8.4 architectural features" menu "ARMv8.5 architectural features" diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 8cced8aa75a9..42e3a1959aa8 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -854,6 +854,7 @@ #define SCTLR_ELx_ENDB (BIT(13)) #define SCTLR_ELx_I (BIT(12)) #define SCTLR_ELx_EOS (BIT(11)) +#define SCTLR_ELx_nAA (BIT(6)) #define SCTLR_ELx_SA (BIT(3)) #define SCTLR_ELx_C (BIT(2)) #define SCTLR_ELx_A (BIT(1)) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 646ecd3069fd..cc85c6cd9908 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -2299,6 +2299,14 @@ static void cpu_enable_mte(struct arm64_cpu_capabilities const *cap) } #endif /* CONFIG_ARM64_MTE */ +#ifdef CONFIG_ARM64_LSE2 +static void cpu_enable_lse2(const struct arm64_cpu_capabilities *__unused) +{ + sysreg_clear_set(sctlr_el2, SCTLR_ELx_nAA, SCTLR_ELx_nAA); + isb(); +} +#endif + static void user_feature_fixup(void) { if (cpus_have_cap(ARM64_WORKAROUND_2658417)) { @@ -2427,6 +2435,16 @@ static const struct arm64_cpu_capabilities arm64_features[] = { ARM64_CPUID_FIELDS(ID_AA64ISAR0_EL1, ATOMIC, IMP) }, #endif /* CONFIG_ARM64_LSE_ATOMICS */ +#ifdef CONFIG_ARM64_LSE2 + { + .desc = "FEAT_LSE2", + .capability = ARM64_HAS_LSE2, + .type = ARM64_CPUCAP_SYSTEM_FEATURE, + .matches = has_cpuid_feature, + .cpu_enable = cpu_enable_lse2, + ARM64_CPUID_FIELDS(ID_AA64MMFR2_EL1, AT, IMP) + }, +#endif { .desc = "Virtualization Host Extensions", .capability = ARM64_HAS_VIRT_HOST_EXTN, diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps index ac3429d892b9..0c7c0a293574 100644 --- a/arch/arm64/tools/cpucaps +++ b/arch/arm64/tools/cpucaps @@ -41,6 +41,7 @@ HAS_HCX HAS_LDAPR HAS_LPA2 HAS_LSE_ATOMICS +HAS_LSE2 HAS_MOPS HAS_NESTED_VIRT HAS_PAN -- 2.33.0

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