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SubjectRe: Bisected rcu hang (kernel/sched.c): was 2.6.33rc4 RCU hang mm spin_lock deadlock(?) after running libvirtd - reproducible.
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On Sun, 2010-01-24 at 01:32 -0500, Michael Breuer wrote:

> That commit solves my crash. Was my first time bisecting... thought I
> got it right. With the referenced commit, the system crashed when
> libvirtd was started, at the previous commit, it didn't crash.
> Regardless, the commit in tip fixes the issue. Hopefully it'll solve
> some of the other reported RCU hangs as well. Looks like the change for
> freshly cloned tasks is key.

Great, and yeah, the freshly cloned bit is the fix for your scenario.

-Mike



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