commit: ac852edb47b15900886ba2564eeeb13b3b526e3e From: Henrik Rydberg <[email protected]> Date: Thu, 7 Jun 2012 04:54:29 -0400 Subject: hwmon: (applesmc) Limit key length in warning messages
Key lookups may call read_smc() with a fixed-length key string, and if the lookup fails, trailing stack content may appear in the kernel log. Fixed with this patch. Signed-off-by: Henrik Rydberg <[email protected]> Cc: [email protected] Signed-off-by: Guenter Roeck <[email protected]> --- drivers/hwmon/applesmc.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c index f082e48..70d62f5 100644 --- a/drivers/hwmon/applesmc.c +++ b/drivers/hwmon/applesmc.c @@ -215,7 +215,7 @@ static int read_smc(u8 cmd, const char *key, u8 *buffer, u8 len) int i; if (send_command(cmd) || send_argument(key)) { - pr_warn("%s: read arg fail\n", key); + pr_warn("%.4s: read arg fail\n", key); return -EIO; } @@ -223,7 +223,7 @@ static int read_smc(u8 cmd, const char *key, u8 *buffer, u8 len) for (i = 0; i < len; i++) { if (__wait_status(0x05)) { - pr_warn("%s: read data fail\n", key); + pr_warn("%.4s: read data fail\n", key); return -EIO; } buffer[i] = inb(APPLESMC_DATA_PORT); -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
