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| H A D | random.c | diff b980955236922ae6106774511c5c05003d3ad225 Mon Mar 04 17:59:12 CET 2013 Theodore Ts'o <tytso@mit.edu> random: fix locking dependency with the tasklist_lock
Commit 6133705494bb introduced a circular lock dependency because
posix_cpu_timers_exit() is called by release_task(), which is holding
a writer lock on tasklist_lock, and this can cause a deadlock since
kill_fasync() gets called with nonblocking_pool.lock taken.
There's no reason why kill_fasync() needs to be taken while the random
pool is locked, so move it out to fix this locking dependency.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reported-by: Russ Dill <Russ.Dill@gmail.com>
Cc: stable@kernel.org
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