Messages in this thread | | | Date | Tue, 31 Jan 2023 16:32:04 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH -next resend v3] mm: hwposion: support recovery from ksm_might_need_to_copy() |
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On Tue, 13 Dec 2022 20:05:23 +0800 Kefeng Wang <wangkefeng.wang@huawei.com> wrote:
> When the kernel copy a page from ksm_might_need_to_copy(), but runs > into an uncorrectable error, it will crash since poisoned page is > consumed by kernel, this is similar to Copy-on-write poison recovery, > When an error is detected during the page copy, return VM_FAULT_HWPOISON > in do_swap_page(), and install a hwpoison entry in unuse_pte() when > swapoff, which help us to avoid system crash. Note, memory failure on > a KSM page will be skipped, but still call memory_failure_queue() to > be consistent with general memory failure process.
I believe we're awaiting a v4 of this?
Did we consider a -stable backport? "kernel crash" sounds undesirable...
Can we identify a Fixes: target for this?
Thanks.
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