* [PATCH] ipv6: protect for_each_sk_fl_rcu in mem_check with rcu_read_lock_bh
@ 2013-11-08 18:26 Hannes Frederic Sowa
2013-11-11 6:26 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Hannes Frederic Sowa @ 2013-11-08 18:26 UTC (permalink / raw)
To: netdev; +Cc: florent.fourcot
Fixes a suspicious rcu derference warning.
Cc: Florent Fourcot <florent.fourcot@enst-bretagne.fr>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
---
net/ipv6/ip6_flowlabel.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index 98fdcc6..e7fb710 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -457,8 +457,10 @@ static int mem_check(struct sock *sk)
if (room > FL_MAX_SIZE - FL_MAX_PER_SOCK)
return 0;
+ rcu_read_lock_bh();
for_each_sk_fl_rcu(np, sfl)
count++;
+ rcu_read_unlock_bh();
if (room <= 0 ||
((count >= FL_MAX_PER_SOCK ||
--
1.8.3.1
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2013-11-08 18:26 [PATCH] ipv6: protect for_each_sk_fl_rcu in mem_check with rcu_read_lock_bh Hannes Frederic Sowa
2013-11-11 6:26 ` David Miller
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