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Date: Sat, 29 Mar 2014 20:39:35 -0400 From: Sasha Levin <sasha.levin@...cle.com> To: chien.yen@...cle.com, davem@...emloft.net Cc: rds-devel@....oracle.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Sasha Levin <sasha.levin@...cle.com> Subject: [PATCH v2] rds: prevent dereference of a NULL device in rds_iw_laddr_check Binding might result in a NULL device which is later dereferenced without checking. Signed-off-by: Sasha Levin <sasha.levin@...cle.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..0298920 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", -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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