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authorEric Dumazet <eric.dumazet@gmail.com>2009-10-30 05:03:53 +0000
committerDavid S. Miller <davem@davemloft.net>2009-10-30 12:25:12 -0700
commit9d410c796067686b1e032d54ce475b7055537138 (patch)
tree4442bdbe4a4be1cce024f2e83a12b7404ef935fa /net/ipv4/udp.c
parent63ca2d74ea4f9c7a7ac082c915609a7b224908e7 (diff)
net: fix sk_forward_alloc corruption
On UDP sockets, we must call skb_free_datagram() with socket locked, or risk sk_forward_alloc corruption. This requirement is not respected in SUNRPC. Add a convenient helper, skb_free_datagram_locked() and use it in SUNRPC Reported-by: Francis Moreau <francis.moro@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/udp.c')
-rw-r--r--net/ipv4/udp.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index d0d436d6216c..0fa9f70e4b19 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -999,9 +999,7 @@ try_again:
err = ulen;
out_free:
- lock_sock(sk);
- skb_free_datagram(sk, skb);
- release_sock(sk);
+ skb_free_datagram_locked(sk, skb);
out:
return err;