netdev - [PATCH net] netlink: fix netlink

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Message-Id: <9333f540a9b87adbdd15e274d12a9d60994fdb34.1383850578.git.jbenc@redhat.com>
Date:	Thu,  7 Nov 2013 19:57:45 +0100
From:	Jiri Benc <jbenc@...hat.com>
To:	netdev@...r.kernel.org
Cc:	Pablo Neira Ayuso <pablo@...filter.org>
Subject: [PATCH net] netlink: fix netlink_ack with large messages

Commit c05cdb1b864f ("netlink: allow large data transfers from user-space")
does not handle cases where netlink_ack is used to report an error. In such
case, the original message is copied to the ack message, which needs to be
large enough.

Signed-off-by: Jiri Benc <jbenc@...hat.com>
---
 net/netlink/af_netlink.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 8df7f64..090f624 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1809,7 +1809,7 @@ out_put:
 	sock_put(sk);
 out:
 #endif
-	return alloc_skb(size, gfp_mask);
+	return netlink_alloc_large_skb(size, gfp_mask);
 }
 EXPORT_SYMBOL_GPL(netlink_alloc_skb);
 
-- 
1.7.6.5

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