* Patch "skbuff: Fix not waking applications when errors are enqueued" has been added to the 4.9-stable tree
@ 2018-03-29 6:27 gregkh
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From: gregkh @ 2018-03-29 6:27 UTC (permalink / raw)
To: vinicius.gomes, davem, edumazet, gregkh, randy.e.witt
Cc: stable, stable-commits
This is a note to let you know that I've just added the patch titled
skbuff: Fix not waking applications when errors are enqueued
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
skbuff-fix-not-waking-applications-when-errors-are-enqueued.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From foo@baz Wed Mar 28 20:16:33 CEST 2018
From: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Date: Wed, 14 Mar 2018 13:32:09 -0700
Subject: skbuff: Fix not waking applications when errors are enqueued
From: Vinicius Costa Gomes <vinicius.gomes@intel.com>
[ 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 | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -3717,7 +3717,7 @@ int sock_queue_err_skb(struct sock *sk,
skb_queue_tail(&sk->sk_error_queue, skb);
if (!sock_flag(sk, SOCK_DEAD))
- sk->sk_data_ready(sk);
+ sk->sk_error_report(sk);
return 0;
}
EXPORT_SYMBOL(sock_queue_err_skb);
Patches currently in stable-queue which might be from vinicius.gomes@intel.com are
queue-4.9/skbuff-fix-not-waking-applications-when-errors-are-enqueued.patch
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2018-03-29 6:27 Patch "skbuff: Fix not waking applications when errors are enqueued" has been added to the 4.9-stable tree gregkh
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