> On Feb 23, 2021, at 4:44 AM, Aili Yao <yaoaili@xxxxxxxxxxxx> wrote: > > 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? At the very least, this needs a clear explanation of why your proposed behavior is better than the existing behavior. > > Thanks > Aili Yao
