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SubjectRe: 2.6.19-rc6-rt7: Kernel BUG at kernel/rtmutex.c:672

* Fernando Lopez-Lezcano <nando@ccrma.Stanford.EDU> wrote:

> Nov 28 03:26:39 localhost kernel: Kernel BUG at kernel/rtmutex.c:672

hm, this means the lock was taken twice by the same task: enabling
CONFIG_PROVE_LOCKING ought to tell us the precise locking info and
backtraces that causes this situation. I looked at the code and it wasnt
obvious at first sight. (we should only be holding cache_chain_mutex
here, and l3->list_lock should not be taken at this point.)

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