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SubjectRe: 2.6.17-rc5-mm2
On Thu, 1 Jun 2006 17:51:16 +0200
"Michal Piotrowski" <michal.k.k.piotrowski@gmail.com> wrote:

> Hi,
>
> On 01/06/06, Andrew Morton <akpm@osdl.org> wrote:
> >
> > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.17-rc5/2.6.17-rc5-mm2/
> >
>
> I don't know why, but first bug appears only when avahi-daemon is
> started. Second look like a problem with my camera.
> http://www.stardust.webpages.pl/files/mm/2.6.17-rc5-mm2/bug_1.jpg

For some reason the lockdep code expected that hardirqs would be enabled.

> http://www.stardust.webpages.pl/files/mm/2.6.17-rc5-mm2/bug_2.jpg

So it's claiming that we're taking multiple i_mutexes.

I can't immediately see where we took the outermost i_mutex there. Nor is
it immediately obvious why this is considered to be deadlockable?

(lockdep tells us that a mutex was taken at "mutex_lock+0x8/0xa", which is
fairly useless. We need to report who the caller of mutex_lock() was).

> Here is config http://www.stardust.webpages.pl/files/mm/2.6.17-rc5-mm2/mm-config

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