On Tue, Jan 31, 2017 at 12:45 PM, Thomas Gleixner <t...@linutronix.de> wrote: > On Tue, 31 Jan 2017, Thomas Gleixner wrote: > >> On Mon, 30 Jan 2017, Dmitry Vyukov wrote: >> > >> > Seems that ctx->might_cancel is racy. >> >> Yes, it is. Fix below. > > And the fix is racy as well. Darn, we really need to lock the context to > avoid that mess.
Yes. I think we need to lock most of timerfd_settime. Otherwise we can end up with a timer that needs to be in the cancel list, but it is actually not; or vice versa.
