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authorJulian Anastasov <ja@ssi.bg>2011-02-22 10:40:25 +0200
committerSimon Horman <horms@verge.net.au>2011-03-02 07:54:41 +0900
commitff75f40f44ae9b79d520bf32a05d35af74a805c0 (patch)
treeec3dc42c3a95c5482569956b9be4503ef0e46259 /net
parent0af320fb4627033e49cbc6e8138e7aa75ab8352a (diff)
downloadlinux-linaro-stable-ff75f40f44ae9b79d520bf32a05d35af74a805c0.tar.gz
ipvs: fix dst_lock locking on dest update
Fix dst_lock usage in __ip_vs_update_dest. We need _bh locking because destination is updated in user context. Can cause lockups on frequent destination updates. Problem reported by Simon Kirby. Bug was introduced in 2.6.37 from the "ipvs: changes for local real server" change. Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: Simon Horman <horms@verge.net.au>
Diffstat (limited to 'net')
-rw-r--r--net/netfilter/ipvs/ip_vs_ctl.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 22f7ad5101ab..ba98e1308f3c 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -808,9 +808,9 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest,
dest->u_threshold = udest->u_threshold;
dest->l_threshold = udest->l_threshold;
- spin_lock(&dest->dst_lock);
+ spin_lock_bh(&dest->dst_lock);
ip_vs_dst_reset(dest);
- spin_unlock(&dest->dst_lock);
+ spin_unlock_bh(&dest->dst_lock);
if (add)
ip_vs_new_estimator(&dest->stats);