linux-ext4 - [Bug 14734] BUG: unable to handle kernel NULL pointer dereference at 0000000000000808

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Message-Id: <200912062102.nB6L2IEc004168@demeter.kernel.org>
Date:	Sun, 6 Dec 2009 21:02:18 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 14734] BUG: unable to handle kernel NULL pointer dereference at
 0000000000000808

http://bugzilla.kernel.org/show_bug.cgi?id=14734

--- Comment #1 from Theodore Tso <tytso@....edu>  2009-12-06 21:02:16 ---
On Fri, Dec 04, 2009 at 03:39:30PM +0000, bugzilla-daemon@...zilla.kernel.org
wrote:
> 
> Just let me know what else I should post in addition to the following. I've
> gotten this bug pretty consistently, on 2.6.

Hmm.... there's a strnage fsnotify_clear_marks_by_inode() on the stack
trace which doesn't seem to make any sense and which I can't place.
Are you using the fsnotify feature for some reason (i.e., some
new-fangled proprietnary "linux anti-virus" package or some such?).
If so, does the problem go away if you stop using said package and not
use the fsnotify interface?

Also, do you have to do anything special to trigger it?  Is the "rm"
in the process handle an "rm -rf", or some such?

                                                      - Ted

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