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mlx4_core: Fix state check in mlx4_qp_modify() 

When checking the states passed in, mlx4_qp_modify() accidentally checks
cur_state twice rather than checking cur_state and new_state.  Fix this
to make sure that both values are in-bounds.

Since these values may be passed in from userspace, this bug results in
userspace being able to trigger an oops.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Cc: stable <stable@kernel.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Jack Morgenstein 2007-11-20 13:01:28 -08:00 committed by Roland Dreier
parent 4187b915a0
commit 9ed87fd34c
1 changed files with 1 additions and 1 deletions
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2
drivers/net/mlx4/qp.c
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@ -113,7 +113,7 @@ int mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
struct mlx4_cmd_mailbox *mailbox;
int ret = 0;
if (cur_state >= MLX4_QP_NUM_STATE || cur_state >= MLX4_QP_NUM_STATE ||
if (cur_state >= MLX4_QP_NUM_STATE || new_state >= MLX4_QP_NUM_STATE ||
!op[cur_state][new_state])
return -EINVAL;