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authorEric Dumazet <edumazet@google.com>2013-08-11 21:54:48 -0700
committerDavid S. Miller <davem@davemloft.net>2013-08-11 22:02:36 -0700
commitf3dfd20860db3d0c400dd83a378176a28d3662db (patch)
treeb7a261523d1225efcbdbcb254953492807eceeff /net/unix
parent6c821bd9edc9563b34c7920b4a99fe64992de530 (diff)
af_unix: fix bug on large send()
commit e370a723632 ("af_unix: improve STREAM behavior with fragmented memory") added a bug on large send() because the skb_copy_datagram_from_iovec() call always start from the beginning of iovec. We must instead use the @sent variable to properly skip the already processed part. Reported-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/unix')
-rw-r--r--net/unix/af_unix.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index fee9e3397cd1..86de99ad2976 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1669,7 +1669,8 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
skb_put(skb, size - data_len);
skb->data_len = data_len;
skb->len = size;
- err = skb_copy_datagram_from_iovec(skb, 0, msg->msg_iov, 0, size);
+ err = skb_copy_datagram_from_iovec(skb, 0, msg->msg_iov,
+ sent, size);
if (err) {
kfree_skb(skb);
goto out_err;

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