On Tue, Jun 09, 2020 at 11:22:27PM +0000, Andrew Doran wrote: > On Sat, Jun 06, 2020 at 09:25:55PM +0200, Joerg Sonnenberger wrote: > > > On Sat, Jun 06, 2020 at 06:45:03PM +0100, Chavdar Ivanov wrote: > > > On Sat, 6 Jun 2020 at 18:43, Chavdar Ivanov <ci4...@gmail.com> wrote: > > > > > > > > Hi, > > > > > > > > I got another cmake hang during pkg_rolling-replace today, while > > > > building misc/kdepimlibs4, trace as follows: > > > > > > Just to mention that after I quit gdb and detached from the process it > > > continued and completed the build . . . > > > > Right, that's the bug in the mutex wakeup handling. > > Hmm. From what I've seen I'm starting to suspect that it's a signal handler > screwing up a waiting thread underneath it, by playing with threads stuff.
I've been wondering if we actually want to have SA_RESTART behavior for _lwp_park. Joerg