diff options
| author | Maor Gottlieb <maorg@nvidia.com> | 2021-06-10 10:34:25 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-06-10 14:59:33 +0300 |
| commit | 2adcb4c5a52a2623cd2b43efa7041e74d19f3a5e (patch) | |
| tree | 8ce19e9cfa16dbca31ea5b923658fb512340fb66 /drivers/infiniband/hw/mlx5/fs.c | |
| parent | edc0b0bccc9c80d9a44d3002dcca94984b25e7cf (diff) | |
| download | linux-2adcb4c5a52a2623cd2b43efa7041e74d19f3a5e.tar.xz | |
RDMA: Verify port when creating flow rule
Validate port value provided by the user and with that remove no longer
needed validation by the driver. The missing check in the mlx5_ib driver
could cause to the below oops.
Call trace:
_create_flow_rule+0x2d4/0xf28 [mlx5_ib]
mlx5_ib_create_flow+0x2d0/0x5b0 [mlx5_ib]
ib_uverbs_ex_create_flow+0x4cc/0x624 [ib_uverbs]
ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0xd4/0x150 [ib_uverbs]
ib_uverbs_cmd_verbs.isra.7+0xb28/0xc50 [ib_uverbs]
ib_uverbs_ioctl+0x158/0x1d0 [ib_uverbs]
do_vfs_ioctl+0xd0/0xaf0
ksys_ioctl+0x84/0xb4
__arm64_sys_ioctl+0x28/0xc4
el0_svc_common.constprop.3+0xa4/0x254
el0_svc_handler+0x84/0xa0
el0_svc+0x10/0x26c
Code: b9401260 f9615681 51000400 8b001c20 (f9403c1a)
Fixes: 436f2ad05a0b ("IB/core: Export ib_create/destroy_flow through uverbs")
Link: https://lore.kernel.org/r/faad30dc5219a01727f47db3dc2f029d07c82c00.1623309971.git.leonro@nvidia.com
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/fs.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/fs.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/mlx5/fs.c b/drivers/infiniband/hw/mlx5/fs.c index f84441ff0c81..18ee2f293825 100644 --- a/drivers/infiniband/hw/mlx5/fs.c +++ b/drivers/infiniband/hw/mlx5/fs.c @@ -1194,9 +1194,8 @@ static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp, goto free_ucmd; } - if (flow_attr->port > dev->num_ports || - (flow_attr->flags & - ~(IB_FLOW_ATTR_FLAGS_DONT_TRAP | IB_FLOW_ATTR_FLAGS_EGRESS))) { + if (flow_attr->flags & + ~(IB_FLOW_ATTR_FLAGS_DONT_TRAP | IB_FLOW_ATTR_FLAGS_EGRESS)) { err = -EINVAL; goto free_ucmd; } |