net: mlx4: Use scnprintf() for avoiding potential buffer overflow
authorTakashi Iwai <tiwai@suse.de>
Sun, 15 Mar 2020 09:34:59 +0000 (10:34 +0100)
committerDavid S. Miller <davem@davemloft.net>
Mon, 16 Mar 2020 00:06:22 +0000 (17:06 -0700)
commit4a348601eb9131893c22b6ed2d3b6ba2bafc2391
tree15aa81cb350aef607c945bf6ade1ac0acb66cf75
parent13bde56c5b7cc6489eb50c40449d461c7ca4da2d
net: mlx4: Use scnprintf() for avoiding potential buffer overflow

Since snprintf() returns the would-be-output size instead of the
actual output size, the succeeding calls may go beyond the given
buffer limit.  Fix it by replacing with scnprintf().

Cc: "David S . Miller" <davem@davemloft.net>
Cc: Tariq Toukan <tariqt@mellanox.com>
To: netdev@vger.kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/mellanox/mlx4/mcg.c