Looks suspicious, please check. julia On Wed, 3 Feb 2016, kbuild test robot wrote: > CC: kbuild-all@xxxxxx > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git topic/core-fixes > head: be33492635ee8fc19a185f37293b533069e5cc8f > commit: be33492635ee8fc19a185f37293b533069e5cc8f [21/21] ALSA: rawmidi: Make snd_rawmidi_transmit() race-free > :::::: branch date: 2 hours ago > :::::: commit date: 2 hours ago > > >> sound/core/seq/seq_virmidi.c:192:6-12: preceding lock on line 176 > > git remote add sound https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git > git remote update sound > git checkout be33492635ee8fc19a185f37293b533069e5cc8f > vim +192 sound/core/seq/seq_virmidi.c > > ^1da177e Linus Torvalds 2005-04-16 170 if (vmidi->event.type != SNDRV_SEQ_EVENT_NONE) { > 62c5549e Takashi Iwai 2006-02-22 171 if (snd_seq_kernel_client_dispatch(vmidi->client, &vmidi->event, in_atomic(), 0) < 0) > ^1da177e Linus Torvalds 2005-04-16 172 return; > ^1da177e Linus Torvalds 2005-04-16 173 vmidi->event.type = SNDRV_SEQ_EVENT_NONE; > ^1da177e Linus Torvalds 2005-04-16 174 } > ^1da177e Linus Torvalds 2005-04-16 175 while (1) { > be334926 Takashi Iwai 2016-01-31 @176 spin_lock_irqsave(&substream->runtime->lock, flags); > be334926 Takashi Iwai 2016-01-31 177 count = __snd_rawmidi_transmit_peek(substream, buf, sizeof(buf)); > ^1da177e Linus Torvalds 2005-04-16 178 if (count <= 0) > ^1da177e Linus Torvalds 2005-04-16 179 break; > ^1da177e Linus Torvalds 2005-04-16 180 pbuf = buf; > ^1da177e Linus Torvalds 2005-04-16 181 while (count > 0) { > ^1da177e Linus Torvalds 2005-04-16 182 res = snd_midi_event_encode(vmidi->parser, pbuf, count, &vmidi->event); > ^1da177e Linus Torvalds 2005-04-16 183 if (res < 0) { > ^1da177e Linus Torvalds 2005-04-16 184 snd_midi_event_reset_encode(vmidi->parser); > ^1da177e Linus Torvalds 2005-04-16 185 continue; > ^1da177e Linus Torvalds 2005-04-16 186 } > be334926 Takashi Iwai 2016-01-31 187 __snd_rawmidi_transmit_ack(substream, res); > ^1da177e Linus Torvalds 2005-04-16 188 pbuf += res; > ^1da177e Linus Torvalds 2005-04-16 189 count -= res; > ^1da177e Linus Torvalds 2005-04-16 190 if (vmidi->event.type != SNDRV_SEQ_EVENT_NONE) { > 62c5549e Takashi Iwai 2006-02-22 191 if (snd_seq_kernel_client_dispatch(vmidi->client, &vmidi->event, in_atomic(), 0) < 0) > ^1da177e Linus Torvalds 2005-04-16 @192 return; > ^1da177e Linus Torvalds 2005-04-16 193 vmidi->event.type = SNDRV_SEQ_EVENT_NONE; > ^1da177e Linus Torvalds 2005-04-16 194 } > ^1da177e Linus Torvalds 2005-04-16 195 } > > :::::: The code at line 192 was first introduced by commit > :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 > > :::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> > :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
