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| author | Hannes Frederic Sowa <hannes@stressinduktion.org> | 2013-11-08 18:26:21 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-08 15:29:11 (GMT) |
| commit | 520e356e35b44957d5578a43e517ac1162141494 (patch) | |
| tree | 94ee4c370bb1c69034a6f1ab3cd7a536de96bdd2 /net/ipv6 | |
| parent | b379b19eb856b6a1d1e88007a930834417a96b11 (diff) | |
| download | linux-fsl-qoriq-520e356e35b44957d5578a43e517ac1162141494.tar.xz | |
ipv6: protect for_each_sk_fl_rcu in mem_check with rcu_read_lock_bh
[ Upstream commit f8c31c8f80dd882f7eb49276989a4078d33d67a7 ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/ipv6')
| -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 46e8843..f0ccdb7 100644 --- a/net/ipv6/ip6_flowlabel.c +++ b/net/ipv6/ip6_flowlabel.c @@ -453,8 +453,10 @@ 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 || |