Messages in this thread | | | Date | Fri, 28 Apr 2023 16:56:49 +0800 | Subject | Re: [PATCH v2] mm: hwpoison: coredump: support recovery from dump_user_range() | From | Kefeng Wang <> |
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On 2023/4/27 10:31, HORIGUCHI NAOYA(堀口 直也) wrote: > On Thu, Apr 27, 2023 at 09:06:46AM +0800, Kefeng Wang wrote: >> >> ... >> For coredump,the task work will be called too, see following code, >> >> get_signal >> sig_kernel_coredump >> elf_core_dump >> dump_user_range >> _copy_from_iter // with MC-safe copy, return without panic >> do_group_exit(ksig->info.si_signo); >> do_exit >> exit_task_work >> task_work_run >> kill_me_never >> memory_failure >> >> I also add debug print to check the memory_failure() processing after >> add MCE_IN_KERNEL_COPYIN to MCE_SAFE exception type, also tested CoW of >> normal page and huge page, it works too. > > Sounds nice to me. > Maybe this information is worth documenting in the patch description. >
Sure, will make a formal patch and send out, thanks.
> Thanks, > Naoya Horiguchi
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