Commit bbb770e7 authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by David S. Miller

xfrm: Fix xfrm_policy_gc_lock handling.

From: Alexey Dobriyan <adobriyan@gmail.com>

Based upon a lockdep trace by Simon Arlott.

xfrm_policy_kill() can be called from both BH and
non-BH contexts, so we have to grab xfrm_policy_gc_lock
with BH disabling.
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 19ecb6ba
...@@ -315,9 +315,9 @@ static void xfrm_policy_kill(struct xfrm_policy *policy) ...@@ -315,9 +315,9 @@ static void xfrm_policy_kill(struct xfrm_policy *policy)
return; return;
} }
spin_lock(&xfrm_policy_gc_lock); spin_lock_bh(&xfrm_policy_gc_lock);
hlist_add_head(&policy->bydst, &xfrm_policy_gc_list); hlist_add_head(&policy->bydst, &xfrm_policy_gc_list);
spin_unlock(&xfrm_policy_gc_lock); spin_unlock_bh(&xfrm_policy_gc_lock);
schedule_work(&xfrm_policy_gc_work); schedule_work(&xfrm_policy_gc_work);
} }
......
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