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RDMA: Check umem pointer validity prior to release

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Update ib_umem_release() to behave similarly to kfree() and allow
submitting NULL pointer as safe input to this function.

Fixes: a52c8e2469 ("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>
This commit is contained in:
Leon Romanovsky
2019-06-16 15:05:20 +03:00
committed by Doug Ledford
parent 89a6da3cb8
commit 836a0fbb3e
26 changed files with 73 additions and 132 deletions
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3
drivers/infiniband/sw/rxe/rxe_mr.c
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@@ -96,8 +96,7 @@ void rxe_mem_cleanup(struct rxe_pool_entry *arg)
struct rxe_mem *mem = container_of(arg, typeof(*mem), pelem);
int i;
if (mem->umem)
ib_umem_release(mem->umem);
ib_umem_release(mem->umem);
if (mem->map) {
for (i = 0; i < mem->num_map; i++)