Commit d496f784 authored by Ralf Baechle's avatar Ralf Baechle Committed by David S. Miller

NET: ROSE: Don't dereference NULL neighbour pointer.

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: default avatarRalf Baechle <ralf@linux-mips.org>
Tested-by: default avatarBernard Pidoux <f6bvp@free.fr>
Cc: stable@vger.kernel.org #2.6.11+
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent dfea2aa6
...@@ -192,7 +192,8 @@ static void rose_kill_by_device(struct net_device *dev) ...@@ -192,7 +192,8 @@ static void rose_kill_by_device(struct net_device *dev)
if (rose->device == dev) { if (rose->device == dev) {
rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0); rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
rose->neighbour->use--; if (rose->neighbour)
rose->neighbour->use--;
rose->device = NULL; rose->device = NULL;
} }
} }
......
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