Messages in this thread Patch in this message | | | From | Ben Hutchings <> | Date | Sun, 11 Nov 2018 19:49:05 +0000 | Subject | [PATCH 3.16 204/366] net/mlx5: Fix incorrect raw command length parsing |
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3.16.61-rc1 review patch. If anyone has any objections, please let me know.
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From: Alex Vesker <valex@mellanox.com>
commit 603b7bcff824740500ddfa001d7a7168b0b38542 upstream.
The NULL character was not set correctly for the string containing the command length, this caused failures reading the output of the command due to a random length. The fix is to initialize the output length string.
Fixes: e126ba97dba9 ("mlx5: Add driver for Mellanox Connect-IB adapters") Signed-off-by: Alex Vesker <valex@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c @@ -1028,7 +1028,7 @@ static ssize_t outlen_write(struct file { struct mlx5_core_dev *dev = filp->private_data; struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; - char outlen_str[8]; + char outlen_str[8] = {0}; int outlen; void *ptr; int err; @@ -1043,8 +1043,6 @@ static ssize_t outlen_write(struct file if (copy_from_user(outlen_str, buf, count)) return -EFAULT; - outlen_str[7] = 0; - err = sscanf(outlen_str, "%d", &outlen); if (err < 0) return err;
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