| From | Kamal Mostafa <> | Subject | [PATCH 3.8 023/133] rds: prevent dereference of a NULL device in rds_iw_laddr_check | Date | Tue, 22 Apr 2014 13:12:41 -0700 |
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3.8.13.22 -stable review patch. If anyone has any objections, please let me know.
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From: Sasha Levin <sasha.levin@oracle.com>
[ Upstream commit bf39b4247b8799935ea91d90db250ab608a58e50 ]
Binding might result in a NULL device which is later dereferenced without checking.
Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- net/rds/iw.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/rds/iw.c b/net/rds/iw.c index 7826d46..5899356 100644 --- a/net/rds/iw.c +++ b/net/rds/iw.c @@ -239,7 +239,8 @@ static int rds_iw_laddr_check(__be32 addr) ret = rdma_bind_addr(cm_id, (struct sockaddr *)&sin); /* due to this, we will claim to support IB devices unless we check node_type. */ - if (ret || cm_id->device->node_type != RDMA_NODE_RNIC) + if (ret || !cm_id->device || + cm_id->device->node_type != RDMA_NODE_RNIC) ret = -EADDRNOTAVAIL; rdsdebug("addr %pI4 ret %d node type %d\n", -- 1.9.1
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