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authorLeon Romanovsky <leonro@mellanox.com>2019-06-16 15:05:20 +0300
committerDoug Ledford <dledford@redhat.com>2019-06-20 15:17:59 -0400
commit836a0fbb3e76f704ad65ddfb57f00725245e509b (patch)
tree30d961b48c7029a952e6eeb5077d76ce0e4a5221 /drivers/infiniband/hw/mthca
parent89a6da3cb8f30ee0aeca924d84bef688f22f883e (diff)
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/mthca')
-rw-r--r--drivers/infiniband/hw/mthca/mthca_provider.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
index d97124bee703..23554d8bf241 100644
--- a/drivers/infiniband/hw/mthca/mthca_provider.c
+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
@@ -953,8 +953,7 @@ static int mthca_dereg_mr(struct ib_mr *mr, struct ib_udata *udata)
struct mthca_mr *mmr = to_mmr(mr);
mthca_free_mr(to_mdev(mr->device), mmr);
- if (mmr->umem)
- ib_umem_release(mmr->umem);
+ ib_umem_release(mmr->umem);
kfree(mmr);
return 0;