From: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
3.4.109-rc1 review patch. If anyone has any objections, please let me know.
------------------
commit d496f7842aada20c61e6044b3395383fa972872c upstream.
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>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Zefan Li <lizefan@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 bde7d69..e895636 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -194,7 +194,8 @@ 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;
}
}
--
1.9.1
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