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Subject[PATCH] IB/mlx4: Fix potentially uninitialized use of 'is_mcast' in create_iboe_ah()
Date
Before commit 297e0da (IB/mlx4: Handle Ethernet L2 parameters for IP based GID
addressing) local variable 'is_mcast' in function create_iboe_ah() was
guaranteed to be set after calling mlx4_ib_resolve_grh(). Since 297e0da
'is_mcast' is set in case of rdma_is_multicast_addr(), but otherwise left
uninitialized. Thus init 'is_mcast' to 0. Detected by Coverity - CID 1164324

Signed-off-by: Christian Engelmayer <cengelma@gmx.at>
---
Compile tested. Applies against branch for-next in tree
git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband.git
---
drivers/infiniband/hw/mlx4/ah.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/mlx4/ah.c b/drivers/infiniband/hw/mlx4/ah.c
index 170dca6..2d8c339 100644
--- a/drivers/infiniband/hw/mlx4/ah.c
+++ b/drivers/infiniband/hw/mlx4/ah.c
@@ -73,7 +73,7 @@ static struct ib_ah *create_iboe_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr
{
struct mlx4_ib_dev *ibdev = to_mdev(pd->device);
struct mlx4_dev *dev = ibdev->dev;
- int is_mcast;
+ int is_mcast = 0;
struct in6_addr in6;
u16 vlan_tag;

--
1.9.1


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