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scsi: scsi_debug: num_tgts must be >= 0

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Passing the parameter "num_tgts=-1" will start an infinite loop that
exhausts the system memory

Link: https://lore.kernel.org/r/20191115163727.24626-1-mlombard@redhat.com
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Maurizio Lombardi 2019-11-15 17:37:27 +01:00 committed by Martin K. Petersen
parent 4583a4f66b
commit aa5334c4f3
1 changed files with 5 additions and 0 deletions
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5
drivers/scsi/scsi_debug.c
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@ -5263,6 +5263,11 @@ static int __init scsi_debug_init(void)
return -EINVAL; return -EINVAL;
} }
if (sdebug_num_tgts < 0) {
pr_err("num_tgts must be >= 0\n");
return -EINVAL;
}
if (sdebug_guard > 1) { if (sdebug_guard > 1) {
pr_err("guard must be 0 or 1\n"); pr_err("guard must be 0 or 1\n");
return -EINVAL; return -EINVAL;