linux-ext4 - [Bug 12272] at random rmmod/insmod corrupts filesystem

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Message-Id: <20090117022309.2BC92108040@picon.linux-foundation.org>
Date:	Fri, 16 Jan 2009 18:23:09 -0800 (PST)
From:	bugme-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 12272] at random rmmod/insmod corrupts filesystem

http://bugzilla.kernel.org/show_bug.cgi?id=12272





------- Comment #12 from tytso@....edu  2009-01-16 18:23 -------
It's still not clear to me what you do to trigger the corruption.  What
modules, specifically, are you removing and inserting?   Can you narrow it down
to a single module?

The messages

[  487.377387] bio too big device hda5 (8 > 0)
[  487.377860] bio too big device hda5 (8 > 0)

... indicates that the block queue data structure has gotten corrupted (since
queue->max_hw_sectors should never be zero).   Bottom line is it sounds like
*some* module is causing random memory corruption, leading to the kernel
malfunctioning.   The bottom line is figuring out which kernel module or
modules are involved.


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