Hi, On 7 February 2018 at 23:31, Peter Hutterer <peter.hutte...@who-t.net> wrote: > On Wed, Feb 07, 2018 at 12:03:56PM +0000, Simon McVittie wrote: >> On Wed, 07 Feb 2018 at 12:51:14 +0200, Pekka Paalanen wrote: >> > Catching an ABRT is kind of ok, catching a SEGV is russian roulette. We >> > have been quite lucky with it, but I've started hitting crashes inside >> > malloc() which causes a deadlock when our SEGV handler needs to malloc() >> > as well (weston_log_timestamp()). >> >> This isn't unique to SIGSEGV: inside any POSIX async-signal handler, >> you can only (portably, safely) use functions that are documented to be >> async-signal-safe, which basically means syscall wrappers. See >> signal-safety(7) on a Linux system. > > fun fact: printf() is not in that list of functions. so printf() from within > a signal handler may or may not go boom.
Yeah, it's basically just a terrible idea. Have reviewed and pushed both patches from this, thanks! Cheers, Daniel _______________________________________________ wayland-devel mailing list firstname.lastname@example.org https://lists.freedesktop.org/mailman/listinfo/wayland-devel