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| author |   Peter Zijlstra <a.p.zijlstra@chello.nl> | 2010-02-15 14:45:54 +0100 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2010-02-16 15:13:59 +0100 |
| commit | 0970d2992dfd7d5ec2c787417cf464f01eeaf42a (patch) | |
| tree | 5f0077dcafda733ef3f1e41d218a473978ce6a9f /kernel/resource.c | |
| parent | sched: Fix SMT scheduler regression in find_busiest_queue() (diff) | |
| download | wireguard-linux-0970d2992dfd7d5ec2c787417cf464f01eeaf42a.tar.xz wireguard-linux-0970d2992dfd7d5ec2c787417cf464f01eeaf42a.zip | |
sched: Fix race between ttwu() and task_rq_lock()
Thomas found that due to ttwu() changing a task's cpu without holding
the rq->lock, task_rq_lock() might end up locking the wrong rq.
Avoid this by serializing against TASK_WAKING.
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1266241712.15770.420.camel@laptop>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/resource.c')
0 files changed, 0 insertions, 0 deletions