Sorry, I have no more time to spend debugging :(
Â
Thus I guess that the true alsa maintainers will be much more efficient
than me (I'm just doing quick and dirty hacking here).
Â
My XMOS USB soundcard now works with this workaround, please could you
take a look at traces I posted in the discussion on LQ.org ?
Â
All the best
JP
Â
23.10.2018, 08:53, "Jaroslav Kysela" <perex@xxxxxxxx>:
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 ?
                                 Â
              Jaroslav
Â
Â
    Â
    22.10.2018, 23:30, "Hyperion" <[1]h1p8r10n@xxxxxxxxxx>:
      Â Â Â Hi,
      Â   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][2]https://www.linuxquestions.org/questions/slackware-14/cu
      rrent-fri-oc
      Â Â Â t-19-puseaudio-segfauts-4175640773/
      Â   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][3]http://git.alsa-project.org/?p=alsa-...792dc809c908cc
      Â Â Â
[3][3][4]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 Â Please could you fix it ?
      Â   Â
      Â Â Â Regards
      Â Â Â jp
      References
      Â Â Â Visible links
      Â Â Â 1.
      [4][5]https://www.linuxquestions.org/questions/slackware
-14/current-fri
      -oct-19-puseaudio-segfauts-4175640773/
      Â Â Â 2.
      [5][6]http://git.alsa-project.org/?p=alsa-plugins.git;a=
commitdiff;h=fc
      3f5d51062ff438780e568995792dc809c908cc
      Â Â Â 3.
      [6][7]http://git.alsa-project.org/?p=alsa-plugins.git;a=
commitdiff;h=6b
      996865126dd559ef186002e45dc6e1594291e7
      Â Â Â Hidden links:
      Â Â Â 4.
      [7][8]https://www.linuxquestions.org/questions/slackware
-14/current-fri
      -oct-19-puseaudio-segfauts-4175640773/
      _______________________________________________
      Alsa-devel mailing list
      [8][9]Alsa-devel@xxxxxxxxxxxxxxxx
      [9][10]http://mailman.alsa-project.org/mailman/listinfo/
alsa-devel
 References
    1.
[11]https://www.linuxquestions.org/questions/slackware-14/current-fr
i-oc
    2. [12]http://git.alsa-project.org/?p=alsa-...792dc809c908cc
    3. [13]http://git.alsa-project.org/?p=alsa-...5dc6e1594291e7
    4.
[14]https://www.linuxquestions.org/questions/slackware-14/current-fr
i-oct-19-puseaudio-segfauts-4175640773/
    5.
[15]http://git.alsa-project.org/?p=alsa-plugins.git;a=commitdiff;h=f
c3f5d51062ff438780e568995792dc809c908cc
    6.
[16]http://git.alsa-project.org/?p=alsa-plugins.git;a=commitdiff;h=6
b996865126dd559ef186002e45dc6e1594291e7
    7.
[17]https://www.linuxquestions.org/questions/slackware-14/current-fr
i-oct-19-puseaudio-segfauts-4175640773/
    8. mailto:[18]Alsa-devel@xxxxxxxxxxxxxxxx
    9.
[19]http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
 _______________________________________________
 Alsa-devel mailing list
 [20]Alsa-devel@xxxxxxxxxxxxxxxx
 [21]http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
Â
Â
--
Jaroslav Kysela <[22]perex@xxxxxxxx>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.
_______________________________________________
Alsa-devel mailing list
[23]Alsa-devel@xxxxxxxxxxxxxxxx
[24]http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
References
1. mailto:h1p8r10n@xxxxxxxxxx
2. https://www.linuxquestions.org/questions/slackware-14/cu
3. http://git.alsa-project.org/?p=alsa-...792dc809c908cc
4. http://git.alsa-project.org/?p=alsa-...5dc6e1594291e7
5. https://www.linuxquestions.org/questions/slackware-14/current-fri
6. http://git.alsa-project.org/?p=alsa-plugins.git;a=commitdiff;h=fc
7. http://git.alsa-project.org/?p=alsa-plugins.git;a=commitdiff;h=6b
8. https://www.linuxquestions.org/questions/slackware-14/current-fri
9. mailto:Alsa-devel@xxxxxxxxxxxxxxxx
10. http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
11. https://www.linuxquestions.org/questions/slackware-14/current-fri-oc
12. http://git.alsa-project.org/?p=alsa-...792dc809c908cc
13. http://git.alsa-project.org/?p=alsa-...5dc6e1594291e7
14. https://www.linuxquestions.org/questions/slackware-14/current-fri-oct-19-puseaudio-segfauts-4175640773/
15. http://git.alsa-project.org/?p=alsa-plugins.git;a=commitdiff;h=fc3f5d51062ff438780e568995792dc809c908cc
16. http://git.alsa-project.org/?p=alsa-plugins.git;a=commitdiff;h=6b996865126dd559ef186002e45dc6e1594291e7
17. https://www.linuxquestions.org/questions/slackware-14/current-fri-oct-19-puseaudio-segfauts-4175640773/
18. mailto:Alsa-devel@xxxxxxxxxxxxxxxx
19. http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
20. mailto:Alsa-devel@xxxxxxxxxxxxxxxx
21. http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
22. mailto:perex@xxxxxxxx
23. mailto:Alsa-devel@xxxxxxxxxxxxxxxx
24. http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
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Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxx
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
