On Tue, Jul 11, 2017 at 08:04:50AM -0700, Andy Lutomirski wrote: > On Tue, Jul 11, 2017 at 7:16 AM, Mark Rutland <mark.rutland@xxxxxxx> wrote: > > Hi, > > > > Arch maintainer tl;dr: most arch fault code doesn't handle fatal signals > > correctly, allowing unprivileged users to create an unkillable task which can > > lock up the system. Please check whether your arch is affected. > > I haven't tested for real, but brief inspection of the code suggests > that x86 is okay. AFAICT, yes. As mentioned later on in the message, I beleive it's been ok since commit: 26178ec11ef3c6c8 ("x86: mm: consolidate VM_FAULT_RETRY handling") ... and my test-case didn't trigger anything in local testing on my desktop. Mark.