[IPSEC]: Lock policy in policy timer.

e8d12276 · Herbert Xu · Stephen Hemminger · 46f55c63 · e8d12276
Commit e8d12276 authored May 21, 2004 by Herbert Xu Committed by Stephen Hemminger May 21, 2004
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net/xfrm/xfrm_policy.c net/xfrm/xfrm_policy.c +3 -0

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--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -148,6 +148,8 @@ static void xfrm_policy_timer(unsigned long data)
 	int warn = 0;
 	int dir;

+	read_lock(&xp->lock);
+
 	if (xp->dead)
 		goto out;

@@ -197,6 +199,7 @@ static void xfrm_policy_timer(unsigned long data)
 		xfrm_pol_hold(xp);

 out:
+	read_unlock(&xp->lock);
 	xfrm_pol_put(xp);
 	return;