Re: bluetooth memory corruption (was Re: ext3-related crash in 2.6.20-rc1)

From: Pavel Machek
Date: Sun Dec 24 2006 - 18:44:54 EST


> > > I got this nasty oops while playing with debugger. Not sure if that is
> > > related; it also might be something with bluetooth; I already know it
> > > corrupts memory during suspend, perhaps it corrupts memory in some
> > > error path?
> >
> > Okay, I spoke too soon. bluetooth & suspend memory corruption was
> > _way_ harder to reproduce than expected. Took me 5-or-so-suspend
> > cycles... so it is probably unrelated to the previous crash.
> can you try to reproduce this with 2.6.20-rc2 as well.

(reproduced in another mail).

_urb_queue_tail(__pending_q(husb, _urb->type), _urb);
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err) {
BT_ERR("%s tx submit failed urb %p type %d err %d",
husb->hdev->name, urb, _urb->type, err);

Do we need to remove urb from pending_q here?

_urb_queue_tail(__completed_q(husb, _urb->type), _urb);
} else
atomic_inc(__pending_tx(husb, _urb->type));

(cesky, pictures)
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