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Message-Id: <1316195333-12374-1-git-send-email-xingchao.wang@intel.com> Date: Fri, 16 Sep 2011 13:48:53 -0400 From: Wang Xingchao <xingchao.wang@...el.com> To: linux-kernel@...r.kernel.org Cc: mingo@...e.hu, peterz@...radead.org, yong.zhang0@...il.com, alex.shi@...el.com, Wang Xingchao <xingchao.wang@...el.com> Subject: [PATCH] cfs: NULL pointer check se maybe NULL if cfs_rq->rb_leftmost is NULL Signed-off-by: Wang Xingchao <xingchao.wang@...el.com> --- kernel/sched_fair.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index fef0bfd..109b232 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -1130,6 +1130,10 @@ check_preempt_tick(struct cfs_rq *cfs_rq, struct sched_entity *curr) return; se = __pick_first_entity(cfs_rq); + + if (!se) + return; + delta = curr->vruntime - se->vruntime; if (delta < 0) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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