diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2013-09-18 21:27:27 +0900 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-10-25 09:58:12 +0100 |
| commit | 68aee7ba66d390abf48c13791a84f6bce29d6f19 (patch) | |
| tree | c382158f4a0fd15743ce6bda063a5bc81e7e89e1 /drivers/scsi | |
| parent | 65f72f2a2fe89f072d6a88e5cd69a64270b9c436 (diff) | |
[SCSI] scsi_debug: fix invalid value check for guard module parameter
In the module initialization, invalid value for guard module parameter
is detected by the following check:
if (scsi_debug_guard > 1) {
printk(KERN_ERR "scsi_debug_init: guard must be 0 or 1\n");
return -EINVAL;
}
But this check isn't enough, because the type of scsi_debug_guard is
'int' and scsi_debug_guard could be a negative value.
This fixes it by changing the type of scsi_debug_guard to 'unsigned int'
instead of adding extra check for a negative value.
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/scsi_debug.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 43369e9071f7..a21322d6da61 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -169,7 +169,7 @@ static int scsi_debug_dix = DEF_DIX; static int scsi_debug_dsense = DEF_D_SENSE; static int scsi_debug_every_nth = DEF_EVERY_NTH; static int scsi_debug_fake_rw = DEF_FAKE_RW; -static int scsi_debug_guard = DEF_GUARD; +static unsigned int scsi_debug_guard = DEF_GUARD; static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED; static int scsi_debug_max_luns = DEF_MAX_LUNS; static int scsi_debug_max_queue = SCSI_DEBUG_CANQUEUE; @@ -2754,7 +2754,7 @@ module_param_named(dix, scsi_debug_dix, int, S_IRUGO); module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); -module_param_named(guard, scsi_debug_guard, int, S_IRUGO); +module_param_named(guard, scsi_debug_guard, uint, S_IRUGO); module_param_named(lbpu, scsi_debug_lbpu, int, S_IRUGO); module_param_named(lbpws, scsi_debug_lbpws, int, S_IRUGO); module_param_named(lbpws10, scsi_debug_lbpws10, int, S_IRUGO); @@ -3184,7 +3184,7 @@ DRIVER_ATTR(dif, S_IRUGO, sdebug_dif_show, NULL); static ssize_t sdebug_guard_show(struct device_driver *ddp, char *buf) { - return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_guard); + return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_guard); } DRIVER_ATTR(guard, S_IRUGO, sdebug_guard_show, NULL); |