diff options
| author | Dan Carpenter <error27@gmail.com> | 2023-01-24 18:20:54 +0300 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2023-02-06 13:59:04 +0300 |
| commit | 563ca0e9eab8acc8a1309e8b440108ff8d23e951 (patch) | |
| tree | c5d1772a5ba51ebbf34cff1d24727f964c5a5946 /drivers/infiniband | |
| parent | f9c47b2caa7ffc903ec950b454b59c209afe3182 (diff) | |
| download | linux-563ca0e9eab8acc8a1309e8b440108ff8d23e951.tar.xz | |
RDMA/mana_ib: Prevent array underflow in mana_ib_create_qp_raw()
The "port" comes from the user and if it is zero then the:
ndev = mc->ports[port - 1];
assignment does an out of bounds read. I have changed the if
statement to fix this and to mirror how it is done in
mana_ib_create_qp_rss().
Fixes: 0266a177631d ("RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Link: https://lore.kernel.org/r/Y8/3Vn8qx00kE9Kk@kili
Acked-by: Long Li <longli@microsoft.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/mana/qp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mana/qp.c b/drivers/infiniband/hw/mana/qp.c index ea15ec77e321..54b61930a7fd 100644 --- a/drivers/infiniband/hw/mana/qp.c +++ b/drivers/infiniband/hw/mana/qp.c @@ -289,7 +289,7 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, struct ib_pd *ibpd, /* IB ports start with 1, MANA Ethernet ports start with 0 */ port = ucmd.port; - if (ucmd.port > mc->num_ports) + if (port < 1 || port > mc->num_ports) return -EINVAL; if (attr->cap.max_send_wr > MAX_SEND_BUFFERS_PER_QUEUE) { |