diff options
| author |   Leon Romanovsky <leonro@mellanox.com> | 2019-06-16 15:05:20 +0300 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2019-06-20 15:17:59 -0400 |
| commit | 836a0fbb3e76f704ad65ddfb57f00725245e509b (patch) | |
| tree | 30d961b48c7029a952e6eeb5077d76ce0e4a5221 /drivers/infiniband/hw/i40iw | |
| parent | RDMA/hns: reset function when removing module (diff) | |
| download | linux-dev-836a0fbb3e76f704ad65ddfb57f00725245e509b.tar.xz linux-dev-836a0fbb3e76f704ad65ddfb57f00725245e509b.zip | |
RDMA: Check umem pointer validity prior to release
Update ib_umem_release() to behave similarly to kfree() and allow
submitting NULL pointer as safe input to this function.
Fixes: a52c8e2469c3 ("RDMA: Clean destroy CQ in drivers do not return errors")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/i40iw')
| -rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_verbs.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c index 3100b0c31b0a..3c0c6aabc64e 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c +++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c @@ -2004,8 +2004,7 @@ static int i40iw_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata) struct cqp_commands_info *cqp_info; u32 stag_idx; - if (iwmr->region) - ib_umem_release(iwmr->region); + ib_umem_release(iwmr->region); if (iwmr->type != IW_MEMREG_TYPE_MEM) { /* region is released. only test for userness. */ |