[Pkg-alsa-devel] Bug#406677: alsa-utils: Alsaconf as a forkbomb

[Robert Gomułka]

Dnia poniedziałek, 15 stycznia 2007 12:02, napisałeś:
> severity 406677 important
> tags 406677 moreinfo unreproducible
> thanks
>
[cut]
>
> Sorry, this is not reproducible at all for me here.  I doubt this is
> going to be possible to debug this without at least knowing the full
> modprobe commandline that's being respawned, as a starting point.
>
> > Looking at /proc/config.gz reveals that I have modules unloading
> > enabled.
>
> What is /proc/config.gz?  There's no such file here.  I do notice that you
> seem to have a custom kernel on your system, so it's possible that
> contributes to being able to reproduce this error.
Yes, I use custom kernel (which could be also seen in kernel package version 
number).
Config.gz is gzipped kernel configuration accessible in runtime from 
customized kernel.
Well, it could be the reason ... Those are mine settings:
# Loadable module support
#
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
CONFIG_MODVERSIONS=y
# CONFIG_MODULE_SRCVERSION_ALL is not set
CONFIG_KMOD=y

My modules with snd:
$ lsmod | grep snd
snd_emu10k1_synth       6528  0
snd_emux_synth         30272  1 snd_emu10k1_synth
snd_seq_virmidi         6464  1 snd_emux_synth
snd_seq_midi_emul       5888  1 snd_emux_synth
snd_seq_midi            8160  0
snd_seq_oss            28096  0
snd_seq_midi_event      6720  3 snd_seq_virmidi,snd_seq_midi,snd_seq_oss
snd_seq                43152  8 
snd_emux_synth,snd_seq_virmidi,snd_seq_midi_emul,snd_seq_midi,snd_seq_oss,snd_seq_midi_event
snd_emu10k1           100608  2 snd_emu10k1_synth
snd_rawmidi            22048  3 snd_seq_virmidi,snd_seq_midi,snd_emu10k1
snd_ac97_codec         82656  1 snd_emu10k1
snd_ac97_bus            2240  1 snd_ac97_codec
snd_pcm_oss            38496  0
snd_mixer_oss          15232  1 snd_pcm_oss
snd_pcm                66888  3 snd_emu10k1,snd_ac97_codec,snd_pcm_oss
snd_seq_device          7692  7 
snd_emu10k1_synth,snd_emux_synth,snd_seq_midi,snd_seq_oss,snd_seq,snd_emu10k1,snd_rawmidi
snd_timer              20100  3 snd_seq,snd_emu10k1,snd_pcm
snd_page_alloc          9608  2 snd_emu10k1,snd_pcm
snd_util_mem            4544  2 snd_emux_synth,snd_emu10k1
snd_hwdep               8708  2 snd_emux_synth,snd_emu10k1
snd                    45988  15 
snd_emux_synth,snd_seq_virmidi,snd_seq_oss,snd_seq,snd_emu10k1,snd_rawmidi,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_device,snd_timer,snd_hwdep

Problem occurs during module unloading. When it hits snd_seq_oss, 
kernel/module utils fall into endless loop (checked with alsaconf with read 
invocations added). I am not sure if it should still remain as Debian bug in 
this case.

Best regards,
Robert