scsi: scsi_debug: num_tgts must be >= 0
[ Upstream commit aa5334c4f3014940f11bf876e919c956abef4089 ] 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> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -5263,6 +5263,11 @@ static int __init scsi_debug_init(void)
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return -EINVAL;
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}
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if (sdebug_num_tgts < 0) {
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pr_err("num_tgts must be >= 0\n");
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return -EINVAL;
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}
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if (sdebug_guard > 1) {
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pr_err("guard must be 0 or 1\n");
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return -EINVAL;
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