diff options
| author | Matan Barak <matanb@mellanox.com> | 2015-01-27 16:58:07 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-01-28 04:12:58 +0300 |
| commit | 19ab574f6271a2f912a449cfdea14a60098fba90 (patch) | |
| tree | 60523d1ada891d59bcdb25cd00a847dd7e62e7b8 /drivers/net/ethernet/mellanox/mlx4/cmd.c | |
| parent | 5a228c03d849c86c10ee69d9951695b0649f82ce (diff) | |
| download | linux-19ab574f6271a2f912a449cfdea14a60098fba90.tar.xz | |
net/mlx4: Fix memory corruption in mlx4_MAD_IFC_wrapper
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>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/cmd.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/cmd.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c index 928b7065732c..154effbfd8be 100644 --- a/drivers/net/ethernet/mellanox/mlx4/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c @@ -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 |