On Mon, 2013-04-29 at 17:42 -0400, Benjamin Poirier wrote:

Currently, peeking on a unix datagram socket with an offset larger than len of
the data in the sk receive queue returns immediately with bogus data. That's
because *off is not reset between each skb_queue_walk().

This patch fixes this so that the behavior is the same as peeking with no
offset on an empty queue: the caller blocks.

Signed-off-by: Benjamin Poirier <redacted>

---

v2: address review feedback from Eric Dumazet

v3: address review feedback from Cong Wang

 net/core/datagram.c |   21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

Acked-by: Eric Dumazet <edumazet@google.com>