Re: [alsa-devel] Segfault in pulseaudio since Alsa 1.1.7

Dne 23.10.2018 v 08:43 Hyperion napsal(a):

I have narrowed to the simpler patch below : Â Quote: diff -rNaud alsa-plugins-1.1.7/a52/pcm_a52.c alsa-plugins-1.1.7-new/a52/pcm_a52.c --- alsa-plugins-1.1.7/a52/pcm_a52.c 2018-10-16 14:00:22.000000000 +0200 +++ alsa-plugins-1.1.7-new/a52/pcm_a52.c 2018-10-23 08:35:15.699830909 +0200 @@ -978,7 +978,8 @@ if ((err = a52_set_hw_constraint(rec)) < 0) { snd_pcm_ioplug_delete(&rec->io);

• goto error;

• free(rec);
• return err;

} *pcmp = rec->io.pcm; Â

It does not appear like a correct change, because rec->slave is initialized in previous lines (snd_pcm_open calls). Could you inspect rec->slave in gdb ?

Jaroslav

Â

22.10.2018, 23:30, "Hyperion" h1p8r10n@yandex.com:

 Â Â Â Hi,
    Â
 Â Â Â Since the upgrade to Alsa 1.1.7, I get a segfault at
 pulseaudio
 Â Â Â startup. This have been discussed and documented here :
 Â Â Â [1][1]https://www.linuxquestions.org/questions/slackware-14/cu
 rrent-fri-oc
 Â Â Â t-19-puseaudio-segfauts-4175640773/
    Â
 Â Â Â It seems that I found the origin of the bug : reverting these
 2 commits
 Â Â Â fixes the problem :
 Â Â Â [2][2]http://git.alsa-project.org/?p=alsa-...792dc809c908cc
 Â Â Â [3][3]http://git.alsa-project.org/?p=alsa-...5dc6e1594291e7
 Â Â Â Then no more segfault in pulseaudio when accessing the USB
 soundcard.
    Â
 Â Â Â Please could you fix it ?
    Â
 Â Â Â Regards
 Â Â Â jp
 References
 Â Â Â Visible links
 Â Â Â 1.
 [4]https://www.linuxquestions.org/questions/slackware-14/current-fri
 -oct-19-puseaudio-segfauts-4175640773/
 Â Â Â 2.
 [5]http://git.alsa-project.org/?p=alsa-plugins.git;a=commitdiff;h=fc
 3f5d51062ff438780e568995792dc809c908cc
 Â Â Â 3.
 [6]http://git.alsa-project.org/?p=alsa-plugins.git;a=commitdiff;h=6b
 996865126dd559ef186002e45dc6e1594291e7
 Â Â Â Hidden links:
 Â Â Â 4.
 [7]https://www.linuxquestions.org/questions/slackware-14/current-fri
 -oct-19-puseaudio-segfauts-4175640773/
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References

1. https://www.linuxquestions.org/questions/slackware-14/current-fri-oc
2. http://git.alsa-project.org/?p=alsa-...792dc809c908cc
3. http://git.alsa-project.org/?p=alsa-...5dc6e1594291e7
4. https://www.linuxquestions.org/questions/slackware-14/current-fri-oct-19-pus...
5. http://git.alsa-project.org/?p=alsa-plugins.git;a=commitdiff;h=fc3f5d51062ff...
6. http://git.alsa-project.org/?p=alsa-plugins.git;a=commitdiff;h=6b996865126dd...
7. https://www.linuxquestions.org/questions/slackware-14/current-fri-oct-19-pus...
8. mailto:Alsa-devel@alsa-project.org
9. http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

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