From: Sasha Levin Date: Sun, 30 Mar 2014 00:39:35 +0000 (-0400) Subject: rds: prevent dereference of a NULL device in rds_iw_laddr_check X-Git-Tag: upstream/snapshot3+hdmi~3225 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=eb3d1ebaa77c257872264015644f182c7888c021;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git 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 Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- 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",