On Tue, 13 Dec 2022 20:05:23 +0800 Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> 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.
