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| author | Bharata B Rao <bharata@linux.vnet.ibm.com> | 2008-12-15 11:56:48 +0530 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-16 21:39:14 +0100 |
| commit | 80f40ee4a07530cc3acbc239a9299ec47025825b (patch) | |
| tree | 3feb69ea882c314b518f53fd6eae9db634918003 /kernel/sched_rt.c | |
| parent | 1bda71282ded6a2e09a2db7c8884542fb46bfd4f (diff) | |
| download | lwn-80f40ee4a07530cc3acbc239a9299ec47025825b.tar.gz lwn-80f40ee4a07530cc3acbc239a9299ec47025825b.zip | |
sched: use RCU variant of list traversal in for_each_leaf_rt_rq()
Impact: fix potential of rare crash
for_each_leaf_rt_rq() walks an RCU protected list (rq->leaf_rt_rq_list),
but doesn't use list_for_each_entry_rcu(). Fix this.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched_rt.c')
| -rw-r--r-- | kernel/sched_rt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c index d9ba9d5f99d6..7bdf84c85ccd 100644 --- a/kernel/sched_rt.c +++ b/kernel/sched_rt.c @@ -77,7 +77,7 @@ static inline u64 sched_rt_period(struct rt_rq *rt_rq) } #define for_each_leaf_rt_rq(rt_rq, rq) \ - list_for_each_entry(rt_rq, &rq->leaf_rt_rq_list, leaf_rt_rq_list) + list_for_each_entry_rcu(rt_rq, &rq->leaf_rt_rq_list, leaf_rt_rq_list) static inline struct rq *rq_of_rt_rq(struct rt_rq *rt_rq) { |