linux-ext4 - [Bug 25832] kernel crashes when a mounted ext3/4 file system is physically removed

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Message-Id: <201105030219.p432JiW9005620@demeter2.kernel.org>
Date:	Tue, 3 May 2011 02:19:44 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 25832] kernel crashes when a mounted ext3/4 file system is
 physically removed

https://bugzilla.kernel.org/show_bug.cgi?id=25832





--- Comment #79 from rocko <rockorequin@...mail.com>  2011-05-03 02:19:42 ---
Created an attachment (id=56272)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=56272)
oops log for null pointer dereference 2.6.39-rc5

Still present in 2.6.39-rc5 (log attached).

Yes, I can readily reproduce this bug in a VM with my current ext4 USB test key
- the attached log is from a fresh install of Ubuntu 11.04 amd64 in VirtualBox
4.0.6, with the kernel upgraded to 2.6.39-rc5.

Fwiw, 2.6.39-rc5 behaved a bit differently from 2.6.38: the system reported
issues with eg /dev/sdb1 and I started seeing multiple mountpoints in the
desktop that I couldn't unmount (/media/disk, /media/disk_, /media/disk__).

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