Sporadic kernel panic on Lenovo T420s resume from S3

[Thilo-Alexander Ginkel]

Hi there,

recently, my Lenovo ThinkPad T420s has been sporadically crashing
after waking up the machine from ACPI S3. The system locks up hard,
i.e., MagicSysRq no longer works, but at least a dump is printed to
the console. The process that is crashing is a kworker process, the
topmost method on the call stack is "wq_worker_sleeping".

The remaining call stack is available (as a photograph) at:
https://secure.tgbyte.de/dropbox/ieNiema6.jpg

Unfortunately, the top of the panic is not visible and scrolling back
does not work.

Some further details:

$ uname -a
Linux orion 3.1.0-0301rc9-generic #201110050905 SMP Wed Oct 5 09:15:03
UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

Kernel config: https://secure.tgbyte.de/dropbox/config-3.1.0-0301rc9-generic

Any ideas?

Thanks,
Thilo
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