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xfrm: Use rcu_dereference_bh to deference pointer protected by rcu_read_lock_bh 

Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Fan Du 2012-08-16 17:51:25 +08:00 committed by David S. Miller
parent 02644a1745
commit 56892261ed
1 changed files with 2 additions and 2 deletions
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4
net/xfrm/xfrm_policy.c
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@ -2501,11 +2501,11 @@ static void __net_init xfrm_dst_ops_init(struct net *net)
struct xfrm_policy_afinfo *afinfo; struct xfrm_policy_afinfo *afinfo;
rcu_read_lock_bh(); rcu_read_lock_bh();
afinfo = rcu_dereference(xfrm_policy_afinfo[AF_INET]); afinfo = rcu_dereference_bh(xfrm_policy_afinfo[AF_INET]);
if (afinfo) if (afinfo)
net->xfrm.xfrm4_dst_ops = *afinfo->dst_ops; net->xfrm.xfrm4_dst_ops = *afinfo->dst_ops;
#if IS_ENABLED(CONFIG_IPV6) #if IS_ENABLED(CONFIG_IPV6)
afinfo = rcu_dereference(xfrm_policy_afinfo[AF_INET6]); afinfo = rcu_dereference_bh(xfrm_policy_afinfo[AF_INET6]);
if (afinfo) if (afinfo)
net->xfrm.xfrm6_dst_ops = *afinfo->dst_ops; net->xfrm.xfrm6_dst_ops = *afinfo->dst_ops;
#endif #endif