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| author | Theodore Ts'o <tytso@mit.edu> | 2013-03-04 17:59:12 +0100 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2013-03-04 18:05:15 +0100 |
| commit | b980955236922ae6106774511c5c05003d3ad225 (patch) | |
| tree | 3eba34d4587e58ec7b15e8fb4af5572620288fe6 /drivers/usb/serial/safe_serial.c | |
| parent | Linux 3.8 (diff) | |
| download | linux-b980955236922ae6106774511c5c05003d3ad225.tar.xz linux-b980955236922ae6106774511c5c05003d3ad225.zip | |
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
Diffstat (limited to 'drivers/usb/serial/safe_serial.c')
0 files changed, 0 insertions, 0 deletions