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[PATCH OLK-5.10] serial: core: Fix atomicity violation in uart_tiocmget
by Yi Yang 06 Nov '24

06 Nov '24

From: Gui-Dong Han <2045gemini(a)gmail.com> mainline inclusion from mainline-v6.8-rc3 commit 30926783a46841c2d1bbf3f74067ba85d304fd0d category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IB1MRY CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- In uart_tiocmget(): result = uport->mctrl; uart_port_lock_irq(uport); result |= uport->ops->get_mctrl(uport); uart_port_unlock_irq(uport); ... return result; In uart_update_mctrl(): uart_port_lock_irqsave(port, &flags); ... port->mctrl = (old & ~clear) | set; ... port->ops->set_mctrl(port, port->mctrl); ... uart_port_unlock_irqrestore(port, flags); An atomicity violation is identified due to the concurrent execution of uart_tiocmget() and uart_update_mctrl(). After assigning result = uport->mctrl, the mctrl value may change in uart_update_mctrl(), leading to a mismatch between the value returned by uport->ops->get_mctrl(uport) and the mctrl value previously read. This can result in uart_tiocmget() returning an incorrect value. This possible bug is found by an experimental static analysis tool developed by our team, BassCheck[1]. This tool analyzes the locking APIs to extract function pairs that can be concurrently executed, and then analyzes the instructions in the paired functions to identify possible concurrency bugs including data races and atomicity violations. The above possible bug is reported when our tool analyzes the source code of Linux 5.17. To address this issue, it is suggested to move the line result = uport->mctrl inside the uart_port_lock block to ensure atomicity and prevent the mctrl value from being altered during the execution of uart_tiocmget(). With this patch applied, our tool no longer reports the bug, with the kernel configuration allyesconfig for x86_64. Due to the absence of the requisite hardware, we are unable to conduct runtime testing of the patch. Therefore, our verification is solely based on code logic analysis. [1] https://sites.google.com/view/basscheck/ Fixes: c5f4644e6c8b ("[PATCH] Serial: Adjust serial locking") Cc: stable(a)vger.kernel.org Signed-off-by: Gui-Dong Han <2045gemini(a)gmail.com> Link: https://lore.kernel.org/r/20240112113624.17048-1-2045gemini@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Conflicts: drivers/tty/serial/serial_core.c [Commit 559c7ff4e324("serial: core: Use port lock wrappers") not merged, no functional change.] Signed-off-by: Yi Yang <yiyang13(a)huawei.com> --- drivers/tty/serial/serial_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index c7adcf97e2a3..f86bef623953 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -1092,8 +1092,8 @@ static int uart_tiocmget(struct tty_struct *tty) goto out; if (!tty_io_error(tty)) { - result = uport->mctrl; spin_lock_irq(&uport->lock); + result = uport->mctrl; result |= uport->ops->get_mctrl(uport); spin_unlock_irq(&uport->lock); } -- 2.25.1

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[PATCH OLK-6.6] serial: core: Fix atomicity violation in uart_tiocmget
by Yi Yang 06 Nov '24

06 Nov '24

From: Gui-Dong Han <2045gemini(a)gmail.com> mainline inclusion from mainline-v6.8-rc3 commit 30926783a46841c2d1bbf3f74067ba85d304fd0d category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IB1MRY CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- In uart_tiocmget(): result = uport->mctrl; uart_port_lock_irq(uport); result |= uport->ops->get_mctrl(uport); uart_port_unlock_irq(uport); ... return result; In uart_update_mctrl(): uart_port_lock_irqsave(port, &flags); ... port->mctrl = (old & ~clear) | set; ... port->ops->set_mctrl(port, port->mctrl); ... uart_port_unlock_irqrestore(port, flags); An atomicity violation is identified due to the concurrent execution of uart_tiocmget() and uart_update_mctrl(). After assigning result = uport->mctrl, the mctrl value may change in uart_update_mctrl(), leading to a mismatch between the value returned by uport->ops->get_mctrl(uport) and the mctrl value previously read. This can result in uart_tiocmget() returning an incorrect value. This possible bug is found by an experimental static analysis tool developed by our team, BassCheck[1]. This tool analyzes the locking APIs to extract function pairs that can be concurrently executed, and then analyzes the instructions in the paired functions to identify possible concurrency bugs including data races and atomicity violations. The above possible bug is reported when our tool analyzes the source code of Linux 5.17. To address this issue, it is suggested to move the line result = uport->mctrl inside the uart_port_lock block to ensure atomicity and prevent the mctrl value from being altered during the execution of uart_tiocmget(). With this patch applied, our tool no longer reports the bug, with the kernel configuration allyesconfig for x86_64. Due to the absence of the requisite hardware, we are unable to conduct runtime testing of the patch. Therefore, our verification is solely based on code logic analysis. [1] https://sites.google.com/view/basscheck/ Fixes: c5f4644e6c8b ("[PATCH] Serial: Adjust serial locking") Cc: stable(a)vger.kernel.org Signed-off-by: Gui-Dong Han <2045gemini(a)gmail.com> Link: https://lore.kernel.org/r/20240112113624.17048-1-2045gemini@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Conflicts: drivers/tty/serial/serial_core.c [Commit 559c7ff4e324("serial: core: Use port lock wrappers") not merged, no functional change.] Signed-off-by: Yi Yang <yiyang13(a)huawei.com> --- drivers/tty/serial/serial_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 5d5570bebfeb..938e36b6cd4f 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -1105,8 +1105,8 @@ static int uart_tiocmget(struct tty_struct *tty) goto out; if (!tty_io_error(tty)) { - result = uport->mctrl; spin_lock_irq(&uport->lock); + result = uport->mctrl; result |= uport->ops->get_mctrl(uport); spin_unlock_irq(&uport->lock); } -- 2.25.1

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[openeuler:openEuler-1.0-LTS 1225/1225] mm/memory.o: warning: objtool: __apply_to_page_range()+0x67c: unreachable instruction
by kernel test robot 06 Nov '24

06 Nov '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: e33ed48bc600febcdca9e71e43cf224934dadc4f commit: dd365884b743523ae70dbbf469bca8168f40ba93 [1225/1225] mm/memory.c: add apply_to_existing_page_range() helper config: x86_64-buildonly-randconfig-002-20241028 (https://download.01.org/0day-ci/archive/20241106/202411061528.694k8VkC-lkp@…) compiler: clang version 19.1.2 (https://github.com/llvm/llvm-project 7ba7d8e2f7b6445b60679da826210cdde29eaf8b) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241106/202411061528.694k8VkC-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/202411061528.694k8VkC-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from mm/memory.c:47: In file included from include/linux/hugetlb.h:44: In file included from include/linux/mempolicy.h:16: include/linux/pagemap.h:425:21: warning: cast from 'int (*)(struct file *, struct page *)' to 'filler_t *' (aka 'int (*)(void *, struct page *)') converts to incompatible function type [-Wcast-function-type-strict] 425 | filler_t *filler = (filler_t *)mapping->a_ops->readpage; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ mm/memory.c:4707:3: warning: cast from 'int (*)(unsigned long, unsigned long, struct cgp_args *)' to 'ktask_thread_func' (aka 'int (*)(void *, void *, void *)') converts to incompatible function type [-Wcast-function-type-strict] 4707 | DEFINE_KTASK_CTL(ctl, clear_gigantic_page_chunk, &args, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 4708 | KTASK_PTE_MINCHUNK); | ~~~~~~~~~~~~~~~~~~~ include/linux/ktask.h:139:3: note: expanded from macro 'DEFINE_KTASK_CTL' 139 | KTASK_CTL_INITIALIZER(thread_func, func_arg, min_chunk_size) \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/ktask.h:123:21: note: expanded from macro 'KTASK_CTL_INITIALIZER' 123 | .kc_thread_func = (ktask_thread_func)(thread_func), \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2 warnings generated. >> mm/memory.o: warning: objtool: __apply_to_page_range()+0x67c: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH v3 OLK-5.10 0/6] mm: support poison recover for more
by Wupeng Ma 06 Nov '24

06 Nov '24

From: Ma Wupeng <mawupeng1(a)huawei.com> Add machine check safe support for cow & migrate_pages. Avoid kernel panic during arm64_do_kernel_sea if no valid info is reported. Changelog since v1: - fix incorrect patch format Kefeng Wang (2): mm: support poison recovery from copy_present_page() mm: support poison recovery from do_cow_fault() Liu Shixin (1): mm: hwpoison: support recovery from HugePage copy-on-write faults Ma Wupeng (2): arm64: mm: Add copy mc support for all migrate_page arm64: send sig fault for user task when apei_claim_sea fails Tong Tiangen (1): make copy_[user]_highpage_mc have return value arch/arm64/include/asm/page.h | 6 +-- arch/arm64/lib/copy_page_mc.S | 6 ++- arch/arm64/mm/copypage.c | 21 +++++--- arch/arm64/mm/fault.c | 17 +++++-- include/linux/highmem.h | 13 ++++- include/linux/mm.h | 8 ++-- mm/hugetlb.c | 7 ++- mm/memory.c | 90 +++++++++++++++++++++++------------ mm/migrate.c | 5 +- 9 files changed, 118 insertions(+), 55 deletions(-) -- 2.25.1

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[PATCH v2 OLK-5.10 0/6] mm: support poison recover for more
by Wupeng Ma 06 Nov '24

06 Nov '24

From: Ma Wupeng <mawupeng1(a)huawei.com> Add machine check safe support for cow & migrate_pages. Avoid kernel panic during arm64_do_kernel_sea if no valid info is reported. Changelog since v1: - fix incorrect patch format Kefeng Wang (2): mm: support poison recovery from copy_present_page() mm: support poison recovery from do_cow_fault() Liu Shixin (1): mm: hwpoison: support recovery from HugePage copy-on-write faults Ma Wupeng (2): arm64: mm: Add copy mc support for all migrate_page arm64: send sig fault for user task when apei_claim_sea fails Tong Tiangen (1): make copy_[user]_highpage_mc have return value arch/arm64/include/asm/page.h | 6 +-- arch/arm64/lib/copy_page_mc.S | 6 ++- arch/arm64/mm/copypage.c | 21 +++++--- arch/arm64/mm/fault.c | 17 +++++-- include/linux/highmem.h | 13 ++++- include/linux/mm.h | 8 ++-- mm/hugetlb.c | 7 ++- mm/memory.c | 90 +++++++++++++++++++++++------------ mm/migrate.c | 5 +- 9 files changed, 118 insertions(+), 55 deletions(-) -- 2.25.1

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[openeuler:openEuler-1.0-LTS 1218/1218] drivers/pci/pcie/dpc.o: warning: objtool: missing symbol for section .init.text
by kernel test robot 06 Nov '24

06 Nov '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: e33ed48bc600febcdca9e71e43cf224934dadc4f commit: 58d584102f06f870f118644f1022c751e015e7bb [1218/1218] PCI: portdrv: Initialize service drivers directly config: x86_64-buildonly-randconfig-006-20241024 (https://download.01.org/0day-ci/archive/20241106/202411061521.R0Vz05vu-lkp@…) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241106/202411061521.R0Vz05vu-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/202411061521.R0Vz05vu-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/pci/pcie/dpc.o: warning: objtool: missing symbol for section .init.text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS] BUILD REGRESSION e33ed48bc600febcdca9e71e43cf224934dadc4f
by kernel test robot 06 Nov '24

06 Nov '24

tree/branch: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS branch HEAD: e33ed48bc600febcdca9e71e43cf224934dadc4f !13007 CVE-2024-49950 Error/Warning (recently discovered and may have been fixed): https://lore.kernel.org/oe-kbuild-all/202411060227.oM4HzgsK-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202411060503.rYM2XmVn-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202411060705.6jumqar7-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202411060729.yZ0sshJi-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202411060820.ye1y82tJ-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202411061140.gNjqbgZ7-lkp@intel.com arch/arm64/kernel/mpam/mpam_mon.c:48: warning: Cannot understand * @rmid_mon_exclusive_all List of allocated RMIDs with arch/arm64/kernel/mpam/mpam_mon.c:54: warning: Cannot understand * @rmid_mon_wait_all List of allocated RMIDs with default arch/arm64/kernel/mpam/mpam_mon.c:62: warning: Cannot understand * @rmid_entry - The entry in the mon list. Unverified Error/Warning (likely false positive, kindly check if interested): drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c:1024:20: warning: 'new_state' may be used uninitialized [-Wmaybe-uninitialized] Error/Warning ids grouped by kconfigs: recent_errors |-- arm64-allmodconfig | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- arm64-allnoconfig | `-- kernel-sched-core.c:error:implicit-declaration-of-function-tg_update_affinity_domains |-- arm64-randconfig-001-20241029 | |-- arch-arm64-kernel-mpam-mpam_mon.c:warning:Cannot-understand-rmid_entry-The-entry-in-the-mon-list. | |-- arch-arm64-kernel-mpam-mpam_mon.c:warning:Cannot-understand-rmid_mon_exclusive_all-List-of-allocated-RMIDs-with | `-- arch-arm64-kernel-mpam-mpam_mon.c:warning:Cannot-understand-rmid_mon_wait_all-List-of-allocated-RMIDs-with-default |-- arm64-randconfig-001-20241106 | |-- drivers-clocksource-arm_arch_timer.c:error:hisi_161010101_read_cntvct_el0-undeclared-(first-use-in-this-function) | |-- drivers-misc-uacce-uacce.c:error:implicit-declaration-of-function-module_refcount | |-- drivers-nvme-host-core.c:error:compat_uptr_t-undeclared-(first-use-in-this-function) | |-- drivers-nvme-host-core.c:error:expected-before-ptrval | `-- kernel-sched-core.c:error:implicit-declaration-of-function-tg_update_affinity_domains |-- arm64-randconfig-002-20241106 | |-- drivers-clocksource-arm_arch_timer.c:error:hisi_161010101_read_cntvct_el0-undeclared-(first-use-in-this-function) | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- arm64-randconfig-003-20241106 | |-- arch-arm64-kernel-acpi.c:warning:no-previous-prototype-for-acpi_map_cpu | |-- arch-arm64-kernel-acpi.c:warning:no-previous-prototype-for-acpi_unmap_cpu | |-- arch-arm64-kvm-..-..-..-virt-kvm-arm-arm.c:error:struct-sched_info-has-no-member-named-run_delay | |-- drivers-nvme-host-core.c:error:compat_uptr_t-undeclared-(first-use-in-this-function) | |-- drivers-nvme-host-core.c:error:expected-before-ptrval | |-- fs-ext4-inode.c:warning:unused-variable-sbi | `-- kernel-sched-core.c:error:implicit-declaration-of-function-tg_update_affinity_domains |-- arm64-randconfig-004-20241106 | |-- arch-arm64-kernel-smp.c:error:pmu_nmi_enable-undeclared-(first-use-in-this-function) | |-- drivers-iommu-arm-smmu-v3.c:error:CONFIG_CMA_ALIGNMENT-undeclared-(first-use-in-this-function) | |-- include-linux-kernel.h:error:first-argument-to-__builtin_choose_expr-not-a-constant | `-- kernel-sched-core.c:error:implicit-declaration-of-function-tg_update_affinity_domains |-- x86_64-allyesconfig | |-- drivers-net-ethernet-stmicro-stmmac-dwmac-phytium.c:error:incompatible-pointer-to-integer-conversion-returning-void-from-a-function-with-result-type-int | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-buildonly-randconfig-001-20241025 | `-- drivers-crypto-hisilicon-sec-sec_drv.o:warning:objtool:missing-symbol-for-section-.init.text |-- x86_64-buildonly-randconfig-001-20241030 | `-- drivers-usb-dwc3-.tmp_dwc3-qcom.o:warning:objtool:missing-symbol-for-section-.init.text |-- x86_64-buildonly-randconfig-001-20241106 | |-- block-blk-mq-debugfs-zoned.o:warning:objtool:missing-symbol-for-section-.text | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-buildonly-randconfig-002-20241028 | |-- drivers-hwtracing-intel_th-msu-sink.o:warning:objtool:missing-symbol-for-section-.init.text | `-- kernel-kprobes.o:warning:objtool:register_kprobe:unreachable-instruction |-- x86_64-buildonly-randconfig-002-20241029 | `-- drivers-spi-spi-uniphier.o:warning:objtool:missing-symbol-for-section-.init.text |-- x86_64-buildonly-randconfig-002-20241106 | |-- arch-x86-events-zhaoxin-core.c:error:redefinition-of-zhaoxin_pmu_init | |-- fs-ext4-inode.c:warning:unused-variable-sbi | |-- kernel-sched-core.c:error:implicit-declaration-of-function-init_auto_affinity-Werror-Wimplicit-function-declaration | |-- kernel-sched-core.c:error:implicit-declaration-of-function-tg_update_affinity_domains-Werror-Wimplicit-function-declaration | `-- kernel-sched-core.c:error:use-of-undeclared-identifier-root_task_group |-- x86_64-buildonly-randconfig-003-20241029 | |-- drivers-media-i2c-.tmp_ak7375.o:warning:objtool:missing-symbol-for-section-.init.text | `-- drivers-net-can-usb-kvaser_usb-kvaser_usb_hydra.c:warning:new_state-may-be-used-uninitialized |-- x86_64-buildonly-randconfig-003-20241106 | |-- fs-ext4-inode.c:warning:unused-variable-sbi | |-- kernel-sched-core.c:error:implicit-declaration-of-function-init_auto_affinity-Werror-Wimplicit-function-declaration | |-- kernel-sched-core.c:error:implicit-declaration-of-function-tg_update_affinity_domains-Werror-Wimplicit-function-declaration | `-- kernel-sched-core.c:error:use-of-undeclared-identifier-root_task_group |-- x86_64-buildonly-randconfig-004-20241106 | |-- drivers-gpu-drm-nouveau-nvkm-subdev-bios-dp.o:warning:objtool:missing-symbol-for-section-.text | |-- drivers-iommu-amd_iommu_debugfs.o:warning:objtool:missing-symbol-for-section-.text | |-- drivers-misc-uacce-uacce.c:error:implicit-declaration-of-function-module_refcount | |-- drivers-pci-controller-dwc-pci-exynos.o:warning:objtool:missing-symbol-for-section-.exit.text | |-- drivers-usb-dwc3-debugfs.o:warning:objtool:missing-symbol-for-section-.text | `-- sound-core-sound_oss.o:warning:objtool:missing-symbol-for-section-.text |-- x86_64-buildonly-randconfig-005-20241106 | |-- fs-ext4-inode.c:warning:unused-variable-sbi | |-- fs-nilfs2-btree.c:warning:bh-may-be-used-uninitialized | `-- include-asm-generic-bug.h:warning:mcu_ctrl-may-be-used-uninitialized |-- x86_64-buildonly-randconfig-006-20241024 | `-- drivers-media-usb-dvb-usb-v2-anysee.o:warning:objtool:missing-symbol-for-section-.init.text |-- x86_64-buildonly-randconfig-006-20241106 | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-defconfig | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-kexec | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-randconfig-002-20241106 | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-randconfig-003-20241106 | |-- fs-ext4-inode.c:warning:unused-variable-sbi | `-- kernel-sched-core.c:error:implicit-declaration-of-function-tg_update_affinity_domains |-- x86_64-randconfig-004-20241106 | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-randconfig-006-20241106 | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-randconfig-011-20241106 | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-randconfig-012-20241106 | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-randconfig-015-20241106 | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-randconfig-016-20241106 | |-- fs-ext4-inode.c:warning:unused-variable-sbi | `-- kernel-sched-core.c:error:implicit-declaration-of-function-tg_update_affinity_domains |-- x86_64-randconfig-071-20241106 | `-- arch-x86-events-zhaoxin-core.c:error:redefinition-of-zhaoxin_pmu_init |-- x86_64-randconfig-072-20241106 | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-randconfig-073-20241106 | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-randconfig-074-20241106 | |-- fs-ext4-inode.c:warning:unused-variable-sbi | `-- kernel-sched-core.c:error:implicit-declaration-of-function-tg_update_affinity_domains |-- x86_64-randconfig-075-20241106 | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-randconfig-076-20241106 | `-- kernel-sched-core.c:error:implicit-declaration-of-function-tg_update_affinity_domains |-- x86_64-rhel-8.3 | `-- fs-ext4-inode.c:warning:unused-variable-sbi |-- x86_64-rhel-8.3-func | `-- fs-ext4-inode.c:warning:unused-variable-sbi `-- x86_64-rhel-8.3-kselftests `-- fs-ext4-inode.c:warning:unused-variable-sbi elapsed time: 744m configs tested: 35 configs skipped: 118 tested configs: arm64 allmodconfig gcc-14.1.0 arm64 allnoconfig gcc-14.1.0 arm64 randconfig-001-20241106 gcc-14.1.0 arm64 randconfig-002-20241106 gcc-14.1.0 arm64 randconfig-003-20241106 gcc-14.1.0 arm64 randconfig-004-20241106 gcc-14.1.0 x86_64 allnoconfig clang-19 x86_64 allyesconfig clang-19 x86_64 buildonly-randconfig-001-20241106 clang-19 x86_64 buildonly-randconfig-002-20241106 clang-19 x86_64 buildonly-randconfig-003-20241106 clang-19 x86_64 buildonly-randconfig-004-20241106 gcc-12 x86_64 buildonly-randconfig-005-20241106 gcc-12 x86_64 buildonly-randconfig-006-20241106 clang-19 x86_64 defconfig gcc-11 x86_64 kexec clang-19 x86_64 randconfig-001-20241106 clang-19 x86_64 randconfig-002-20241106 gcc-11 x86_64 randconfig-003-20241106 gcc-12 x86_64 randconfig-004-20241106 gcc-12 x86_64 randconfig-005-20241106 clang-19 x86_64 randconfig-006-20241106 gcc-11 x86_64 randconfig-011-20241106 gcc-11 x86_64 randconfig-012-20241106 gcc-12 x86_64 randconfig-013-20241106 clang-19 x86_64 randconfig-014-20241106 gcc-12 x86_64 randconfig-015-20241106 gcc-12 x86_64 randconfig-016-20241106 gcc-12 x86_64 randconfig-071-20241106 gcc-12 x86_64 randconfig-072-20241106 gcc-12 x86_64 randconfig-073-20241106 clang-19 x86_64 randconfig-074-20241106 gcc-12 x86_64 randconfig-075-20241106 clang-19 x86_64 randconfig-076-20241106 gcc-12 x86_64 rhel-8.3 gcc-12 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-5.10 0/6] mm: support poison recover for more
by Wupeng Ma 06 Nov '24

06 Nov '24

From: Ma Wupeng <mawupeng1(a)huawei.com> Add machine check safe support for cow & migrate_pages. Avoid kernel panic during arm64_do_kernel_sea if no valid info is reported. Kefeng Wang (2): mm: support poison recovery from copy_present_page() mm: support poison recovery from do_cow_fault() Liu Shixin (1): mm: hwpoison: support recovery from HugePage copy-on-write faults Ma Wupeng (2): arm64: mm: Add copy mc support for all migrate_page arm64: send sig fault for user task when apei_claim_sea fails Tong Tiangen (1): make copy_[user]_highpage_mc have return value arch/arm64/include/asm/page.h | 6 +-- arch/arm64/lib/copy_page_mc.S | 6 ++- arch/arm64/mm/copypage.c | 21 +++++--- arch/arm64/mm/fault.c | 17 +++++-- include/linux/highmem.h | 13 ++++- include/linux/mm.h | 8 ++-- mm/hugetlb.c | 7 ++- mm/memory.c | 90 +++++++++++++++++++++++------------ mm/migrate.c | 5 +- 9 files changed, 118 insertions(+), 55 deletions(-) -- 2.25.1

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[openeuler:OLK-5.10] BUILD REGRESSION f705e909a01ee9ae75542457ca95b055dae177a0
by kernel test robot 06 Nov '24

06 Nov '24

tree/branch: https://gitee.com/openeuler/kernel.git OLK-5.10 branch HEAD: f705e909a01ee9ae75542457ca95b055dae177a0 !13009 CVE-2024-49950 Unverified Error/Warning (likely false positive, kindly check if interested): drivers/gpu/drm/ast/ast_mm.c:116 ast_pci_host_is_5c01() error: we previously assumed 'child' could be null (see line 109) Error/Warning ids grouped by kconfigs: recent_errors |-- arm64-allnoconfig | |-- arch-arm64-kernel-ipi_nmi.c:error:implicit-declaration-of-function-printk_safe_enter | |-- arch-arm64-kernel-ipi_nmi.c:error:implicit-declaration-of-function-printk_safe_exit | |-- kernel-workqueue.c:error:implicit-declaration-of-function-printk_safe_enter | |-- kernel-workqueue.c:error:implicit-declaration-of-function-printk_safe_exit | |-- kismet:WARNING:unmet-direct-dependencies-detected-for-BPF_NET_GLOBAL_PROG-when-selected-by-SCHED_TASK_RELATIONSHIP | |-- kismet:WARNING:unmet-direct-dependencies-detected-for-PCI_IOV-when-selected-by-CRYPTO_DEV_HISI_MIGRATION | `-- kismet:WARNING:unmet-direct-dependencies-detected-for-TASK_PLACEMENT_BY_CPU_RANGE-when-selected-by-BPF_SCHED |-- arm64-randconfig-003-20241106 | |-- arch-arm64-include-asm-archrandom.h:error:unknown-register-name-r2-in-asm | `-- arch-arm64-include-asm-archrandom.h:error:unknown-register-name-r3-in-asm |-- x86_64-allnoconfig | |-- kernel-workqueue.c:error:implicit-declaration-of-function-printk_safe_exit-Werror-Wimplicit-function-declaration | |-- kismet:WARNING:unmet-direct-dependencies-detected-for-BPF_NET_GLOBAL_PROG-when-selected-by-SCHED_TASK_RELATIONSHIP | `-- kismet:WARNING:unmet-direct-dependencies-detected-for-TASK_PLACEMENT_BY_CPU_RANGE-when-selected-by-BPF_SCHED |-- x86_64-allyesconfig | `-- drivers-net-ipvlan-ipvlan_main.c:warning:variable-old_prog-set-but-not-used |-- x86_64-buildonly-randconfig-001-20241106 | |-- arch-x86-kernel-paravirt.c:error:implicit-declaration-of-function-__text_gen_insn-Werror-Wimplicit-function-declaration | |-- arch-x86-kernel-paravirt.c:error:use-of-undeclared-identifier-CALL_INSN_OPCODE | `-- arch-x86-kernel-paravirt.c:error:use-of-undeclared-identifier-CALL_INSN_SIZE |-- x86_64-buildonly-randconfig-002-20241028 | `-- fs-crypto-fname.o:warning:objtool:fscrypt_fname_encrypt:unreachable-instruction |-- x86_64-buildonly-randconfig-002-20241106 | |-- drivers-net-ipvlan-ipvlan_main.c:warning:variable-old_prog-set-but-not-used | |-- drivers-tty-tty_buffer.c:error:implicit-declaration-of-function-printk_safe_exit-Werror-Wimplicit-function-declaration | |-- kernel-sched-topology.c:error:implicit-declaration-of-function-register_sysctl_init-Werror-Wimplicit-function-declaration | `-- kernel-workqueue.c:error:implicit-declaration-of-function-printk_safe_exit-Werror-Wimplicit-function-declaration |-- x86_64-buildonly-randconfig-004-20241106 | |-- kernel-sched-topology.c:error:implicit-declaration-of-function-register_sysctl_init | |-- kernel-workqueue.c:error:implicit-declaration-of-function-printk_safe_enter | |-- kernel-workqueue.c:error:implicit-declaration-of-function-printk_safe_exit | `-- mm-memcontrol.c:error:implicit-declaration-of-function-ksm_process_profit |-- x86_64-buildonly-randconfig-005-20241106 | |-- arch-x86-kernel-paravirt.c:error:CALL_INSN_OPCODE-undeclared-(first-use-in-this-function) | |-- arch-x86-kernel-paravirt.c:error:CALL_INSN_SIZE-undeclared-(first-use-in-this-function) | `-- arch-x86-kernel-paravirt.c:error:implicit-declaration-of-function-__text_gen_insn |-- x86_64-kexec | `-- kernel-trace-trace_uprobe.o:warning:objtool:__uprobe_perf_func:unreachable-instruction |-- x86_64-randconfig-003-20241106 | |-- security-integrity-ima-ima.h:warning:struct-ima_digest-declared-inside-parameter-list-will-not-be-visible-outside-of-this-definition-or-declaration | `-- security-integrity-ima-ima_main.c:error:too-few-arguments-to-function-ima_appraise_measurement |-- x86_64-randconfig-006-20241106 | `-- drivers-net-ipvlan-ipvlan_main.c:warning:variable-old_prog-set-but-not-used |-- x86_64-randconfig-013-20241106 | `-- drivers-gpu-drm-nouveau-nvkm-subdev-clk-pllnv04.o:warning:objtool:nv04_pll_calc-falls-through-to-next-function-asanmodule_ctor() |-- x86_64-randconfig-014-20241106 | `-- drivers-usb-cdns3-debug.h:warning:sprintf-argument-may-overlap-destination-object-field |-- x86_64-randconfig-015-20241106 | |-- arch-x86-events-zhaoxin-uncore.c:warning:cluster_id-is-used-uninitialized | |-- arch-x86-events-zhaoxin-uncore.c:warning:subnode_id-is-used-uninitialized | |-- security-integrity-ima-ima.h:warning:struct-ima_digest-declared-inside-parameter-list-will-not-be-visible-outside-of-this-definition-or-declaration | `-- security-integrity-ima-ima_main.c:error:too-few-arguments-to-function-ima_appraise_measurement |-- x86_64-randconfig-074-20241106 | `-- drivers-net-ipvlan-ipvlan_main.c:warning:variable-old_prog-set-but-not-used `-- x86_64-randconfig-161-20241029 `-- drivers-gpu-drm-ast-ast_mm.c-ast_pci_host_is_5c01()-error:we-previously-assumed-child-could-be-null-(see-line-) elapsed time: 754m configs tested: 35 configs skipped: 128 tested configs: arm64 allmodconfig clang-20 arm64 allnoconfig gcc-14.1.0 arm64 randconfig-001-20241106 gcc-14.1.0 arm64 randconfig-002-20241106 gcc-14.1.0 arm64 randconfig-003-20241106 clang-20 arm64 randconfig-004-20241106 clang-20 x86_64 allnoconfig clang-19 x86_64 allyesconfig clang-19 x86_64 buildonly-randconfig-001-20241106 clang-19 x86_64 buildonly-randconfig-002-20241106 clang-19 x86_64 buildonly-randconfig-003-20241106 clang-19 x86_64 buildonly-randconfig-004-20241106 gcc-12 x86_64 buildonly-randconfig-005-20241106 gcc-12 x86_64 buildonly-randconfig-006-20241106 clang-19 x86_64 defconfig gcc-11 x86_64 kexec clang-19 x86_64 randconfig-001-20241106 clang-19 x86_64 randconfig-002-20241106 gcc-11 x86_64 randconfig-003-20241106 gcc-12 x86_64 randconfig-004-20241106 gcc-12 x86_64 randconfig-005-20241106 clang-19 x86_64 randconfig-006-20241106 gcc-11 x86_64 randconfig-011-20241106 gcc-11 x86_64 randconfig-012-20241106 gcc-12 x86_64 randconfig-013-20241106 clang-19 x86_64 randconfig-014-20241106 gcc-12 x86_64 randconfig-015-20241106 gcc-12 x86_64 randconfig-016-20241106 gcc-12 x86_64 randconfig-071-20241106 gcc-12 x86_64 randconfig-072-20241106 gcc-12 x86_64 randconfig-073-20241106 clang-19 x86_64 randconfig-074-20241106 gcc-12 x86_64 randconfig-075-20241106 clang-19 x86_64 randconfig-076-20241106 gcc-12 x86_64 rhel-8.3 gcc-12 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-6.6] selinux: clarify return code in filename_trans_read_helper_compat()
by Yi Yang 06 Nov '24

06 Nov '24

From: Ondrej Mosnacek <omosnace(a)redhat.com> mainline inclusion from mainline-v6.10-rc1 commit 4e551db0426472ca305a2f3284b25af763bfe57d category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IB1MNX CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- For the "conflicting/duplicate rules" branch in filename_trans_read_helper_compat() the Smatch static checker reports: security/selinux/ss/policydb.c:1953 filename_trans_read_helper_compat() warn: missing error code 'rc' While the value of rc will already always be zero here, it is not obvious that it's the case and that it's the intended return value (Smatch expects rc to be assigned within 5 lines from the goto). Therefore, add an explicit assignment just before the goto to make the intent more clear and the code less error-prone. Fixes: c3a276111ea2 ("selinux: optimize storage of filename transitions") Reported-by: Dan Carpenter <dan.carpenter(a)linaro.org> Link: https://lore.kernel.org/selinux/722b90c4-1f4b-42ff-a6c2-108ea262bd10@moroto… Signed-off-by: Ondrej Mosnacek <omosnace(a)redhat.com> Signed-off-by: Paul Moore <paul(a)paul-moore.com> Signed-off-by: Yi Yang <yiyang13(a)huawei.com> --- security/selinux/ss/policydb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c index 2d528f699a22..f70399373588 100644 --- a/security/selinux/ss/policydb.c +++ b/security/selinux/ss/policydb.c @@ -1921,6 +1921,7 @@ static int filename_trans_read_helper_compat(struct policydb *p, void *fp) if (unlikely(ebitmap_get_bit(&datum->stypes, stype - 1))) { /* conflicting/duplicate rules are ignored */ datum = NULL; + rc = 0; goto out; } if (likely(datum->otype == otype)) -- 2.25.1

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