From: Eric Dumazet <eric.dumazet@gmail.com>
To: Benjamin Poirier <bpoirier@suse.de>
Cc: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Pavel Emelyanov <xemul@parallels.com>,
Cong Wang <xiyou.wangcong@gmail.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 1/3] unix/dgram: peek beyond 0-sized skbs
Date: Mon, 29 Apr 2013 17:48:20 -0700 [thread overview]
Message-ID: <1367282900.8964.334.camel@edumazet-glaptop> (raw)
In-Reply-To: <1367271734-14379-1-git-send-email-bpoirier@suse.de>
On Mon, 2013-04-29 at 17:42 -0400, Benjamin Poirier wrote:
> "77c1090 net: fix infinite loop in __skb_recv_datagram()" (v3.8) introduced a
> regression:
> After that commit, recv can no longer peek beyond a 0-sized skb in the queue.
> __skb_recv_datagram() instead stops at the first skb with len == 0 and results
> in the system call failing with -EFAULT via skb_copy_datagram_iovec().
>
> When peeking at an offset with 0-sized skb(s), each one of those is received
> only once, in sequence. The offset starts moving forward again after receiving
> datagrams with len > 0.
>
> Signed-off-by: Benjamin Poirier <bpoirier@suse.de>
>
> ---
Acked-by: Eric Dumazet <edumazet@google.com>
next prev parent reply other threads:[~2013-04-30 0:48 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-25 13:47 [PATCH net 1/3] unix/dgram: peek beyond 0-sized skbs Benjamin Poirier
2013-04-25 13:47 ` [PATCH net 2/3] unix/dgram: fix peeking with an offset larger than data in queue Benjamin Poirier
2013-04-25 18:58 ` Eric Dumazet
2013-04-25 13:47 ` [PATCH net 3/3] unix/stream: " Benjamin Poirier
2013-04-25 18:48 ` [PATCH net 1/3] unix/dgram: peek beyond 0-sized skbs Eric Dumazet
2013-04-26 18:35 ` Benjamin Poirier
2013-04-26 18:35 ` [PATCH net v2 2/3] unix/dgram: fix peeking with an offset larger than data in queue Benjamin Poirier
2013-04-29 7:01 ` Cong Wang
2013-04-29 21:42 ` [PATCH v3 1/3] unix/dgram: peek beyond 0-sized skbs Benjamin Poirier
2013-04-29 21:42 ` [PATCH v3 2/3] unix/dgram: fix peeking with an offset larger than data in queue Benjamin Poirier
2013-04-30 0:49 ` Eric Dumazet
2013-04-30 4:44 ` David Miller
2013-04-29 21:42 ` [PATCH v3 3/3] unix/stream: " Benjamin Poirier
2013-04-30 0:51 ` Eric Dumazet
2013-04-30 4:44 ` David Miller
2013-04-30 0:48 ` Eric Dumazet [this message]
2013-04-30 4:44 ` [PATCH v3 1/3] unix/dgram: peek beyond 0-sized skbs David Miller
2013-04-26 18:35 ` [PATCH net v2 3/3] unix/stream: fix peeking with an offset larger than data in queue Benjamin Poirier
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