[alsa-devel] snd_usb_caiaq bug?

[Marco Santamaria]

During a Rosegarden session a qsampler crash caused the following output in
dmesg:

[11530.642970] qsampler[22794]: segfault at 00000008 eip b73f52c5 esp
bfe77e20 error 4
[13278.161113] ALSA
/home/marco/build/alsa-1.0.17/linux-2.6.24-23-rt/driver/alsa-driver-1.0.17/usb/caiaq/../../alsa-kernel/usb/caiaq/caiaq-midi.c:90:
snd-usb-caiaq log: snd_usb_caiaq_midi_send(f6d52b40): usb_submit_urb()
failed,ret=-22, len=61
[13720.859888] qjackctl.bin[22273]: segfault at 00000314 eip b7b07a7f esp
bfbe8f54 error 4

There are segmentation fault errors from qsampler and qjackctl, but perhaps
there's also a problem in caiaq-midi.c .

Regards,
Marco

2009/1/9 Takashi Iwai <tiwai at suse.de>

> At Thu, 8 Jan 2009 23:11:53 +0100,
> Daniel Mack wrote:
> >
> > Hi Takashi,
> >
> > On Thu, Jan 08, 2009 at 03:37:30PM +0100, Takashi Iwai wrote:
> > > > every thing is Ok for me now. No more crash, no more messages in
> dmesg.
> > > > I just had a warning during compilation, but I think this is not
> really
> > > > important :
> > > >
> > > > sound/usb/caiaq/caiaq-midi.c: In function
> \u2018snd_usb_caiaq_midi_output_done
> > > > \u2019:
> > > > sound/usb/caiaq/caiaq-midi.c:170: attention : unused variable
> \u2018buf\u2019
> > > >
> > > > Perhaps this is not the same line (170) as you but, in my file, it
> concerns
> > > > the last function.
> > >
> > > OK, it's simple to fix.
> > > The below is the latest version I committed now to sound git tree.
> > > It'll be pushed to 2.6.29 (and stable kernels) later.
> >
> > Thanks a lot for your help - I was on vacation until now and had very
> > limited ways to follow that thread. I would, however, apprectiate the
> > driver version number would be increased for this change, as it makes
> > tracking of user error reports better trackable.
> >
> > Do you want me to send in a patch for that or is it easier if you do
> > it yourself?
>
> I increased the version to 1.3.10 now.
>
>
> thanks,
>
> Takashi
>