[alsa-devel] snd_usb_caiaq bug?

[Marco Santamaria]

I wanted to report this, just in case it was related to the patch you made
to solve our problem.

Thank you very much,

Marco

2009/1/11 Takashi Iwai <tiwai at suse.de>

> At Sat, 10 Jan 2009 13:53:24 +0100,
> Marco Santamaria wrote:
> >
> > 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 .
>
> Might be, but difficult to judge as now since the error seems
> happening after qsampler, and the urb error itself seems
> non-critical.
>
>
> Takashi
>
> >
> > 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
> >
> >
>