changes singce v1: - Patch 1: Fix cur_sev and sev type to `int` per Tony - Patch 4: Fix return value to 0 for clean pages per Miaohe - Patch 5: pick return value comments of memory-failure() This patch addresses three regressions identified in memory failure handling, as discovered using ras-tools[1]: - `./einj_mem_uc copyin -f` - `./einj_mem_uc futex -f` - `./einj_mem_uc instr` The regressions in the copyin and futex cases were caused by the replacement of `EX_TYPE_UACCESS` with `EX_TYPE_EFAULT_REG` in some copy-from-user operations, leading to kernel panics. The instr case regression resulted from the PTE entry not being marked as hwpoison, causing the system to send unnecessary SIGBUS signals. These fixes ensure proper handling of memory errors and prevent kernel panics and unnecessary signal dispatch. [1]https://git.kernel.org/pub/scm/linux/kernel/git/aegl/ras-tools.git Shuai Xue (5): x86/mce: Collect error message for severities below MCE_PANIC_SEVERITY x86/mce: dump error msg from severities x86/mce: add EX_TYPE_EFAULT_REG as in-kernel recovery context to fix copy-from-user operations regression mm/hwpoison: Fix incorrect "not recovered" report for recovered clean pages mm: memory-failure: move return value documentation to function declaration arch/x86/kernel/cpu/mce/core.c | 26 +++++++++++++------------- arch/x86/kernel/cpu/mce/severity.c | 21 ++++++++++++++++----- mm/memory-failure.c | 21 +++++++++++++++------ 3 files changed, 44 insertions(+), 24 deletions(-) -- 2.39.3
