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Message-ID: <20131108182621.GA404@order.stressinduktion.org> Date: Fri, 8 Nov 2013 19:26:21 +0100 From: Hannes Frederic Sowa <hannes@...essinduktion.org> To: netdev@...r.kernel.org Cc: florent.fourcot@...t-bretagne.fr Subject: [PATCH] ipv6: protect for_each_sk_fl_rcu in mem_check with rcu_read_lock_bh Fixes a suspicious rcu derference warning. Cc: Florent Fourcot <florent.fourcot@...t-bretagne.fr> Signed-off-by: Hannes Frederic Sowa <hannes@...essinduktion.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 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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