On Fri, 1 Feb 2019, Dmitry Vyukov wrote: > On Fri, Feb 1, 2019 at 5:48 PM Dmitry Vyukov <dvyu...@google.com> wrote: > > > > Hello, > > > > The following program creates an unkillable process that eats CPU. > > /proc/pid/stack is empty, I am not sure what other info I can provide. > > > > Tested is on upstream commit 4aa9fc2a435abe95a1e8d7f8c7b3d6356514b37a. > > Config is attached. > > Looking through other reproducers that create unkillable processes, I > think I found a much simpler reproducer (below). It's single threaded > and just setups SIGBUS handler and does timer_create+timer_settime to > send repeated SIGBUS. The resulting process can't be killed with > SIGKILL. > +Thomas for timers.
+Oleg, Eric That's odd. With some tracing I can see that SIGKILL is generated and queued, but its not delivered by some weird reason. I'm traveling in the next days, so I won't be able to do much about it. Will look later this week. Thanks, tglx