On Fri, 9 Dec 2022 15:28:01 +0800 Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> wrote:We are trying to support ARCH_HAS_COPY_MC on arm64[1] and trying to recover from CoW faults[2],
When the kernel copy a page from ksm_might_need_to_copy(), but runsThanks. Sorry, lots of paperwork and bureaucracy:
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,
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.
Is a copy of the oops(?) output available?
Did someone else report this? If so, is a Reported-by available for
that? And a Link: for the Reported-by:, which is a coming thing.
Can we identify a Fixes: target?
Is a cc:stable appropriate?