-stable review patch. If anyone has any objections, please let us know.
------------------
From: David S. Miller <[email protected]>
If the device is down, invoking the device hard header callbacks
is not legal, so check it early.
Based upon a shaper OOPS report from Frederik Deweerdt.
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Chris Wright <[email protected]>
---
net/packet/af_packet.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
--- linux-2.6.19.2.orig/net/packet/af_packet.c
+++ linux-2.6.19.2/net/packet/af_packet.c
@@ -358,6 +358,10 @@ static int packet_sendmsg_spkt(struct ki
if (dev == NULL)
goto out_unlock;
+ err = -ENETDOWN;
+ if (!(dev->flags & IFF_UP))
+ goto out_unlock;
+
/*
* You may not queue a frame bigger than the mtu. This is the lowest level
* raw protocol and you must do your own fragmentation at this level.
@@ -406,10 +410,6 @@ static int packet_sendmsg_spkt(struct ki
if (err)
goto out_free;
- err = -ENETDOWN;
- if (!(dev->flags & IFF_UP))
- goto out_free;
-
/*
* Now send it
*/
@@ -737,6 +737,10 @@ static int packet_sendmsg(struct kiocb *
if (sock->type == SOCK_RAW)
reserve = dev->hard_header_len;
+ err = -ENETDOWN;
+ if (!(dev->flags & IFF_UP))
+ goto out_unlock;
+
err = -EMSGSIZE;
if (len > dev->mtu+reserve)
goto out_unlock;
@@ -769,10 +773,6 @@ static int packet_sendmsg(struct kiocb *
skb->dev = dev;
skb->priority = sk->sk_priority;
- err = -ENETDOWN;
- if (!(dev->flags & IFF_UP))
- goto out_free;
-
/*
* Now send it
*/
--
-
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