diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/tcp.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 1d7f49c6f0c..7a0f0b27bf1 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -1321,6 +1321,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, struct task_struct *user_recv = NULL; int copied_early = 0; struct sk_buff *skb; + u32 urg_hole = 0; lock_sock(sk); @@ -1532,7 +1533,8 @@ do_prequeue: } } } - if ((flags & MSG_PEEK) && peek_seq != tp->copied_seq) { + if ((flags & MSG_PEEK) && + (peek_seq - copied - urg_hole != tp->copied_seq)) { if (net_ratelimit()) printk(KERN_DEBUG "TCP(%s:%d): Application bug, race in MSG_PEEK.\n", current->comm, task_pid_nr(current)); @@ -1553,6 +1555,7 @@ do_prequeue: if (!urg_offset) { if (!sock_flag(sk, SOCK_URGINLINE)) { ++*seq; + urg_hole++; offset++; used--; if (!used) |