SMP+USB still crashes in 2.4.6-pre5

SMP+USB still crashes in 2.4.6-pre5

[Jakob Borg]

Hey,

Just wanted people to know that the same problem I reported about 2.4.4 a
while back is still present in 2.4.6-pre6 (hard crash when doing "cat
whatever > /dev/dsp1" where /dev/dsp1 is an external USB audio device, where
"hard crash" means a freeze followed by "wait on irq" message as reported
earlier).

I have tracked down the problem to having appeared between 2.4.3 and 2.4.4
and occuring only on kernels compiled SMP (actual number of processors
doesn't matter), but the only response I have got is "no major changes
occured between those kernel versions" and I am not competent to find it
myself. :(

Any help appreciated...

//jb

Re: SMP+USB still crashes in 2.4.6-pre5

[Alan Cox]

> Just wanted people to know that the same problem I reported about 2.4.4 a
> while back is still present in 2.4.6-pre6 (hard crash when doing "cat
> whatever > /dev/dsp1" where /dev/dsp1 is an external USB audio device, where
> "hard crash" means a freeze followed by "wait on irq" message as reported
> earlier).

Does this happen on 2.4.5-ac kernel as well ?

Re: SMP+USB still crashes in 2.4.6-pre5

[Jakob Borg]

On Sun, Jun 24, 2001 at 01:52:37PM +0100, Alan Cox wrote:
> > hard crash when doing "cat whatever > /dev/dsp1" where /dev/dsp1 is
> > an external USB audio device
> 
> Does this happen on 2.4.5-ac kernel as well ?

On 2.4.5-ac9, yes. Haven't tested any others.

//jb

Re: SMP+USB still crashes in 2.4.6-pre5

[Jonathans Test account]

On Sun, 24 Jun 2001, Alan Cox wrote:

> > Just wanted people to know that the same problem I reported about 2.4.4 a
> > while back is still present in 2.4.6-pre6 (hard crash when doing "cat
> > whatever > /dev/dsp1" where /dev/dsp1 is an external USB audio device, where
> > "hard crash" means a freeze followed by "wait on irq" message as reported
> > earlier).
>
> Does this happen on 2.4.5-ac kernel as well ?
>

The crash problem seems to also affect usb-storage devices.  Hard lockups
on an SMP machine under 2.4.4, 2.4.5 and 2.4.6pre3.  Dropped back to 2.4.3
and all is well.  Haven't tried on UP or the -ac kernels.  Have been
waiting to see if anyone saw this elsewhere as I know that usb-storage
still has some "issues".  :-)

--
-Jonathan

Re: SMP+USB still crashes in 2.4.6-pre5

[Jakob Borg]

On Sun, Jun 24, 2001 at 01:52:37PM +0100, Alan Cox wrote:
> > Just wanted people to know that the same problem I reported about 2.4.4 a
> > while back is still present in 2.4.6-pre6 (hard crash when doing "cat
> > whatever > /dev/dsp1" where /dev/dsp1 is an external USB audio device, where
> > "hard crash" means a freeze followed by "wait on irq" message as reported
> > earlier).
> 
> Does this happen on 2.4.5-ac kernel as well ?

The same problem is present in -ac18.

//jb