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net/mlx4: Fix memory corruption in mlx4_MAD_IFC_wrapper

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Fix a memory corruption at mlx4_MAD_IFC_wrapper.

A table of size dev->caps.pkey_table_len[port]*sizeof(*table)
was allocated, but get_full_pkey_table() assumes that the number
of entries in the table is a multiplication of 32 (which isn't always
correct).

Fixes: 0a9a018 ('mlx4: MAD_IFC paravirtualization')
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Matan Barak 2015-01-27 15:58:07 +02:00 committed by David S. Miller
parent 5a228c03d8
commit 19ab574f62
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/mellanox/mlx4/cmd.c
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@ -901,7 +901,9 @@ static int mlx4_MAD_IFC_wrapper(struct mlx4_dev *dev, int slave,
index = be32_to_cpu(smp->attr_mod);
if (port < 1 || port > dev->caps.num_ports)
return -EINVAL;
table = kcalloc(dev->caps.pkey_table_len[port], sizeof *table, GFP_KERNEL);
table = kcalloc((dev->caps.pkey_table_len[port] / 32) + 1,
sizeof(*table) * 32, GFP_KERNEL);
if (!table)
return -ENOMEM;
/* need to get the full pkey table because the paravirtualized