linux-ext4 - [Bug 25832] kernel crashes upon resume if usb devices are removed when suspended

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Message-Id: <201102210408.p1L48C7x029525@demeter2.kernel.org>
Date:	Mon, 21 Feb 2011 04:08:12 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 25832] kernel crashes upon resume if usb devices are removed
 when suspended

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

--- Comment #33 from rocko <rockorequin@...mail.com>  2011-02-21 04:08:10 ---
Created an attachment (id=48512)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=48512)
syslog from VM which is hanging for 10-15 seconds at a time

In case it is useful... I also tried reproducing the freeze running Ubuntu
11.04 (running 2.6.38-rc4) in VirtualBox and repeatedly assigning/unassigning
the test USB key to it (which used to have a good chance of freezing the host,
but not now). I didn't get a total freeze, but I did start getting freezes for
maybe 10-15 seconds. The USB access light started flashing permanently so I
seem to have recreated the situation where some process has crashed trying to
access the drive, or perhaps just crashed the drive itself, but the kernel
doesn't completely crash, just completely pause temporarily. The key still
shows up in an ls as attached to 1-1:1.0, but I can't bind/unbind it anymore -
it gives write errors (no such device) and "device offlined" errors.

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