RDMA/mlx4: Prevent shift wrapping in set_user_sq_size()

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The ucmd->log_sq_bb_count variable is controlled by the user so this
shift can wrap.  Fix it by using check_shl_overflow() in the same way
that it was done in commit 515f60004e ("RDMA/hns: Prevent undefined
behavior in hns_roce_set_user_sq_size()").

Fixes: 839041329f ("IB/mlx4: Sanity check userspace send queue sizes")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Link: https://lore.kernel.org/r/a8dfbd1d-c019-4556-930b-bab1ded73b10@kili.mountain
Signed-off-by: Leon Romanovsky <leon@kernel.org>

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Dan Carpenter 2023-03-07 12:51:27 +03:00 • committed by Leon Romanovsky

parent faa63656fc

commit d50b3c73f1

1 changed files with 6 additions and 2 deletions

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8

drivers/infiniband/hw/mlx4/qp.c

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