From: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
This patch has been added to the 3.18 stable tree. If you have any
objections, please let us know.
===============
[ Upstream commit d496f7842aada20c61e6044b3395383fa972872c ]
A ROSE socket doesn't necessarily always have a neighbour pointer so check
if the neighbour pointer is valid before dereferencing it.
Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Tested-by: Bernard Pidoux <f6bvp@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx #2.6.11+
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
net/rose/af_rose.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index a85c1a0..67984fb 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -192,7 +192,8 @@ static void rose_kill_by_device(struct net_device *dev)
if (rose->device == dev) {
rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
- rose->neighbour->use--;
+ if (rose->neighbour)
+ rose->neighbour->use--;
rose->device = NULL;
}
}
--
2.1.0
--
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