Revision 9c95e7319ba98585ebb6d304eca2d56f401ed70c authored by Hiroshi Shimamoto on 19 September 2007, 21:34:46 UTC, committed by Ingo Molnar on 19 September 2007, 21:34:46 UTC
When using rt_mutex, a NULL pointer dereference is occurred at enqueue_task_rt. Here is a scenario; 1) there are two threads, the thread A is fair_sched_class and thread B is rt_sched_class. 2) Thread A is boosted up to rt_sched_class, because the thread A has a rt_mutex lock and the thread B is waiting the lock. 3) At this time, when thread A create a new thread C, the thread C has a rt_sched_class. 4) When doing wake_up_new_task() for the thread C, the priority of the thread C is out of the RT priority range, because the normal priority of thread A is not the RT priority. It makes data corruption by overflowing the rt_prio_array. The new thread C should be fair_sched_class. The new thread should be valid scheduler class before queuing. This patch fixes to set the suitable scheduler class. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
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drivers | ||
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include | ||
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kernel | ||
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.gitignore | -rw-r--r-- | 607 bytes |
.mailmap | -rw-r--r-- | 3.6 KB |
COPYING | -rw-r--r-- | 18.3 KB |
CREDITS | -rw-r--r-- | 89.3 KB |
Kbuild | -rw-r--r-- | 1.5 KB |
MAINTAINERS | -rw-r--r-- | 91.2 KB |
Makefile | -rw-r--r-- | 50.1 KB |
README | -rw-r--r-- | 16.5 KB |
REPORTING-BUGS | -rw-r--r-- | 3.0 KB |
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