On Fri, 5 Feb 2021 17:01:35 +0800 Aili Yao <yaoaili@xxxxxxxxxxxx> wrote: > When one page is already hwpoisoned by MCE AO action, processes may not > be killed, processes mapping this page may make a syscall include this > page and result to trigger a VM_FAULT_HWPOISON fault, as it's in kernel > mode it may be fixed by fixup_exception, current code will just return > error code to user code. > > This is not sufficient, we should send a SIGBUS to the process and log > the info to console, as we can't trust the process will handle the error > correctly. > > Suggested-by: Feng Yang <yangfeng1@xxxxxxxxxxxx> > Signed-off-by: Aili Yao <yaoaili@xxxxxxxxxxxx> > --- > arch/x86/mm/fault.c | 62 +++++++++++++++++++++++++++++---------------- > 1 file changed, 40 insertions(+), 22 deletions(-) > Hi luto; Is there any feedback? Thanks Aili Yao
