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| author | Hannes Frederic Sowa <hannes@stressinduktion.org> | 2013-11-08 19:26:21 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-11-11 01:25:28 -0500 |
| commit | f8c31c8f80dd882f7eb49276989a4078d33d67a7 (patch) | |
| tree | cbbd640b1bd677ad0ef7d38bc826ac96e0d0633a | |
| parent | e267cb960ab790c94a5019272c0e4dac95dc4dba (diff) | |
| download | linux-f8c31c8f80dd882f7eb49276989a4078d33d67a7.tar.gz linux-f8c31c8f80dd882f7eb49276989a4078d33d67a7.tar.bz2 linux-f8c31c8f80dd882f7eb49276989a4078d33d67a7.zip | |
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@enst-bretagne.fr>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv6/ip6_flowlabel.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c index 98fdcc6f51b1..e7fb7106550f 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 || |