Re: [PATCH] iwlagn: fix panic in iwl{5000,4965}_rx_reply_tx

["John W. Linville" <linville@tuxdriver.com>]

On Thu, Sep 24, 2009 at 02:38:07PM -0700, reinette chatre wrote:
> Hi Stanislaw,
> 
> On Wed, 2009-09-23 at 01:51 -0700, Stanislaw Gruszka wrote:
> > In some cases firmware can give us bad value of index in transmit
> > buffers array. This patch add sanity check for such values and return
> > from processing function instantly when it happens.
> > 
> > https://bugzilla.redhat.com/show_bug.cgi?id=521931
> > 
> > Patch was tested by reporter on iwl5000. I think check can be also
> > helpful for 4965.
> > 
> > Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
> > ---
> 
> I looked at the bugzilla entry and I think that there may be another fix
> required here. After the driver submitted the five frames it received a
> surprisingly large number of tx responses from firmware, with one of
> these causing the problem. The bad value from the firmware may be a
> result of something else done incorrectly by driver here since the
> firmware has been trying for more than 40 times at this point to inform
> driver about tx results.
> 
> I commented in that bugzilla and we can continue to debug this issue
> there. Until then I'd like to hold off on this patch.

Hmmm...well, I already sent it to Dave/Linus -- it's in 2.6.32-rc1...

John
-- 
John W. Linville		Someday the world will need a hero, and you
linville@tuxdriver.com			might be all we have.  Be ready.