skbuff: Fix not waking applications when errors are enqueued
authorVinicius Costa Gomes <vinicius.gomes@intel.com>
Wed, 14 Mar 2018 20:32:09 +0000 (13:32 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 31 Mar 2018 16:10:42 +0000 (18:10 +0200)
commit329f4710f89c028d5a8904040af913dfc5727362
tree06de3e65ac6b8cfe0fb658802ca0285b101b6cd9
parente90e9771d9a33b8b14486c69c1b3183978d23eb5
skbuff: Fix not waking applications when errors are enqueued

[ Upstream commit 6e5d58fdc9bedd0255a8781b258f10bbdc63e975 ]

When errors are enqueued to the error queue via sock_queue_err_skb()
function, it is possible that the waiting application is not notified.

Calling 'sk->sk_data_ready()' would not notify applications that
selected only POLLERR events in poll() (for example).

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: Randy E. Witt <randy.e.witt@intel.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/core/skbuff.c