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RDMA/nldev: Prevent underflow in nldev_stat_set_counter_dynamic_doit()
This code checks "index" for an upper bound but it does not check for
negatives. Change the type to unsigned to prevent underflows.
Fixes: 3c3c1f1416
("RDMA/nldev: Allow optional-counter status configuration through RDMA netlink")
Link: https://lore.kernel.org/r/20220316083948.GC30941@kili
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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@ -1951,9 +1951,10 @@ static int nldev_stat_set_counter_dynamic_doit(struct nlattr *tb[],
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u32 port)
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{
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struct rdma_hw_stats *stats;
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int rem, i, index, ret = 0;
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struct nlattr *entry_attr;
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unsigned long *target;
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int rem, i, ret = 0;
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u32 index;
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stats = ib_get_hw_stats_port(device, port);
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if (!stats)
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