Re: Kernel 2.6.25-rc4: lock up when writing onto DM-Crypt volume

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Hi Milian,


> Probably different issue, but please try to use this patch too:
>
http://www2.kernel.org/pub/linux/kernel/people/agk/patches/2.6/editing/dm-crypt-add-cond_resched.patch

Yes, I tried the patch. Still hangs.


> please could you send output of "echo t >/proc/sysrq-trigger"
> - in syslog, (run when system in hang)

I've uploaded the output, once with the vanilla -rc kernel, once with
your patch. The third file is the whole syslog for one system boot:


http://datenparkplatz.de/DiesUndDas/syslog-tail.txt
File 1: tailed syslog after  "echo t >/proc/sysrq-trigger";
vanilla 2.6.25-rc4 kernel


http://datenparkplatz.de/DiesUndDas/syslog-tail_patched-kernel.txt
File 2: tailed syslog after  "echo t >/proc/sysrq-trigger";
patched kernel 2.6.25-rc4 with dm-crypt-add-cond_resched.patch


http://datenparkplatz.de/DiesUndDas/syslog-FULL_patched-kernel.txt
File 3: full syslog; patched kernel 2.6.25-rc4 with
dm-crypt-add-cond_resched.patch



> Is it reproducible without loop involved?

Sorry, I couldn't test this today. I don't have a free partition on my
harddisk that I could use. (And I still remember one rather traumatizing
incident I once had when using "dd" on my harddisk and mixing up some
partition numbers...)

If you want me to, I could borrow a USB pendrive and give it a try. But
not before saturday, I'm afraid.


Regards,
Ulrich

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