sched: fix new task startup crash
authorSrivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Wed, 17 Oct 2007 14:55:11 +0000 (16:55 +0200)
committerIngo Molnar <mingo@elte.hu>
Wed, 17 Oct 2007 14:55:11 +0000 (16:55 +0200)
commitb9dca1e0fcb696716840a3bc8f20a6941b484dbf
tree1fb2198b192b35382756e288ba33df6f37fcf6d4
parentb1a8c172c318534b96d0f0f1aecdad3898118b98
sched: fix new task startup crash

Child task may be added on a different cpu that the one on which parent
is running. In which case, task_new_fair() should check whether the new
born task's parent entity should be added as well on the cfs_rq.

Patch below fixes the problem in task_new_fair.

This could fix the put_prev_task_fair() crashes reported.

Reported-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Reported-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
kernel/sched.c
kernel/sched_fair.c