[ I sent this to linux-sound yesterday. Nerijus Baliunas
<nerijus@users.sourceforge.net> asked me to forward this also to
linux-kernel. So here it is.
]
Hi!
Soundblaster module in version 2.4.10-pre12 and many (pre-)patches before
oopsed in sb_dsp_unload at the module deletion phase.
Loading the module reports
Sep 17 23:08:05 pingu kernel: <Sound Blaster (8 BIT/MONO ONLY) (2.01)> at
0x220 irq 5 dma 1>
so sb_mixer_init() is not called, because devc->major == 2.
Problem is that at "module deletion time", the call to sb_mixer_unload()
is unconditional and a
kfree(mixer_devs[devc->my_mixerdev]);
is not very healthy if devc->my_mixerdev == -1 (the initial value).
This kfree() call without checking the array index got introduced in
2.4.8, sound_unload_mixerdev() which is called after kfree() contains a
check for devc->my_mixerdev != -1.
The attached patch cures this, it just introduces this check. It should
apply to any recent kernel.
Regards,
Matze
-- Matthias Hanisch mailto:matze@camline.com phone: +49 8137 935-219
This archive was generated by hypermail 2b29 : Sun Sep 23 2001 - 21:00:42 EST