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author | Sasha Levin <sasha.levin@oracle.com> | 2014-03-29 20:39:35 -0400 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-04-14 06:50:04 -0700 |
commit | eb3d1ebaa77c257872264015644f182c7888c021 (patch) | |
tree | a97936f4da06e774d4237e71f9d3c2af4a1ce12a /net/rds/iw.c | |
parent | f9f80fa9755d955425d99220e018ac9618f642f5 (diff) | |
download | linux-stable-eb3d1ebaa77c257872264015644f182c7888c021.tar.gz linux-stable-eb3d1ebaa77c257872264015644f182c7888c021.tar.bz2 linux-stable-eb3d1ebaa77c257872264015644f182c7888c021.zip |
rds: prevent dereference of a NULL device in rds_iw_laddr_check
[ 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/rds/iw.c')
-rw-r--r-- | net/rds/iw.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/rds/iw.c b/net/rds/iw.c index 7826d46baa70..589935661d66 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", |