On Tue, 01 Mar 2016 13:33:27 +0100, Dmitry Vyukov wrote: > > Hello, > > The following program creates an unkillable process: ..... > The hang stack is: > > [<ffffffff85309f77>] snd_seq_oss_writeq_sync+0x327/0x790 > sound/core/seq/oss/seq_oss_writeq.c:121 This is wait_event_interruptible_timeout(q->sync_sleep, ! q->sync_event_put, HZ); and this should return zero if (signal_pending(current)) /* interrupted - return 0 to finish sync */ q->sync_event_put = 0; if (! q->sync_event_put || q->sync_time >= time) return 0; return 1; > [<ffffffff852fa353>] snd_seq_oss_drain_write+0x113/0x160 ... and this loop should break: while (snd_seq_oss_writeq_sync(dp->writeq)) ; So, I see no obvious error in the code, so far. I'm running your test program now with 8 parallel runs, but I couldn't reproduce it. Any other specifics? thanks, Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
