diff options
| author | Hannes Frederic Sowa <[email protected]> | 2015-11-17 14:10:59 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2015-11-17 20:25:45 +0000 |
| commit | a3a116e04cc6a94d595ead4e956ab1bc1d2f4746 (patch) | |
| tree | 311448a945154e0247d25366a786e9c4bddbf197 /net/unix/af_unix.c | |
| parent | rtnetlink: fix frame size warning in rtnl_fill_ifinfo (diff) | |
| download | kernel-a3a116e04cc6a94d595ead4e956ab1bc1d2f4746.tar.gz kernel-a3a116e04cc6a94d595ead4e956ab1bc1d2f4746.zip | |
af_unix: take receive queue lock while appending new skb
While possibly in future we don't necessarily need to use
sk_buff_head.lock this is a rather larger change, as it affects the
af_unix fd garbage collector, diag and socket cleanups. This is too much
for a stable patch.
For the time being grab sk_buff_head.lock without disabling bh and irqs,
so don't use locked skb_queue_tail.
Fixes: 869e7c62486e ("net: af_unix: implement stream sendpage support")
Cc: Eric Dumazet <[email protected]>
Signed-off-by: Hannes Frederic Sowa <[email protected]>
Reported-by: Eric Dumazet <[email protected]>
Acked-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
| -rw-r--r-- | net/unix/af_unix.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index a8352db5c5b5..955ec152cb71 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -1813,8 +1813,11 @@ alloc_skb: skb->truesize += size; atomic_add(size, &sk->sk_wmem_alloc); - if (newskb) + if (newskb) { + spin_lock(&other->sk_receive_queue.lock); __skb_queue_tail(&other->sk_receive_queue, newskb); + spin_unlock(&other->sk_receive_queue.lock); + } unix_state_unlock(other); mutex_unlock(&unix_sk(other)->readlock); |