Like sd_pr_command, before use sshdr, we need to check the result
of scsi_execute, also need to check whether sshdr is valid.
Signed-off-by: zhengbin <zhengbin13@xxxxxxxxxx>
---
drivers/scsi/sr_ioctl.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/scsi/sr_ioctl.c b/drivers/scsi/sr_ioctl.c
index ffcf902..7672fc1 100644
--- a/drivers/scsi/sr_ioctl.c
+++ b/drivers/scsi/sr_ioctl.c
@@ -206,6 +206,12 @@ int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc)
/* Minimal error checking. Ignore cases we know about, and report the rest. */
if (driver_byte(result) != 0) {
+ if (driver_byte(result) != DRIVER_SENSE ||
+ !scsi_sense_valid(sshdr)) {
+ err = -EIO;
+ goto out;
+ }
+
switch (sshdr->sense_key) {
case UNIT_ATTENTION:
SDev->changed = 1;
--
2.7.4
