RDMA/mlx5: Protect from NULL pointer derefence

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The mlx5_ib_alloc_implicit_mr() can fail to acquire pages
and the returned mr pointer won't be valid. Ensure that it
is not error prior to access.

Cc: <stable@vger.kernel.org> # 4.10
Fixes: 81713d3788 ("IB/mlx5: Add implicit MR support")
Reported-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

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Leon Romanovsky 2018-03-13 15:29:24 +02:00 • committed by Doug Ledford

parent 2d873449a2

commit 4289861d88

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drivers/infiniband/hw/mlx5/mr.c

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