scsi: fix upper bounds check of sense key in scsi_sense_key_string()

[ Upstream commit a87eeb900dbb9f8202f96604d56e47e67c936b9d ]

Commit 655ee63cf371 ("scsi constants: command, sense key + additional
sense string") added a "Completed" sense string with key 0xF to
snstext[], but failed to updated the upper bounds check of the sense key
in scsi_sense_key_string().

Fixes: 655ee63cf371 ("[SCSI] scsi constants: command, sense key + additional sense strings")
Cc: <stable@vger.kernel.org> # v3.12+
Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>

diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c
index fa09d4be2b5341436dba4e61c733543de7da57e9..2b456ca69d5c5dbafc2394074ad51e325d9f933d 100644 (file)
--- a/drivers/scsi/constants.c
+++ b/drivers/scsi/constants.c
@@ -1181,8 +1181,9 @@ static const char * const snstext[] = {
 
 /* Get sense key string or NULL if not available */
 const char *
-scsi_sense_key_string(unsigned char key) {
-       if (key <= 0xE)
+scsi_sense_key_string(unsigned char key)
+{
+       if (key < ARRAY_SIZE(snstext))
                return snstext[key];
        return NULL;
 }