On Tue, Mar 1, 2016 at 3:44 PM, Takashi Iwai <tiwai@xxxxxxx> wrote: > 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
