* [PATCH] scsi_debug: num_tgts must be >= 0
@ 2019-11-15 16:37 Maurizio Lombardi
2019-11-16 3:30 ` Douglas Gilbert
2019-11-19 4:41 ` Martin K. Petersen
0 siblings, 2 replies; 3+ messages in thread
From: Maurizio Lombardi @ 2019-11-15 16:37 UTC (permalink / raw)
To: jejb; +Cc: martin.petersen, linux-scsi
Passing the parameter "num_tgts=-1" will start
an infinite loop that exhausts the system memory
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
---
drivers/scsi/scsi_debug.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index d323523f5f9d..32965ec76965 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -5263,6 +5263,11 @@ static int __init scsi_debug_init(void)
return -EINVAL;
}
+ if (sdebug_num_tgts < 0) {
+ pr_err("num_tgts must be >= 0\n");
+ return -EINVAL;
+ }
+
if (sdebug_guard > 1) {
pr_err("guard must be 0 or 1\n");
return -EINVAL;
--
Maurizio Lombardi
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] scsi_debug: num_tgts must be >= 0
2019-11-15 16:37 [PATCH] scsi_debug: num_tgts must be >= 0 Maurizio Lombardi
@ 2019-11-16 3:30 ` Douglas Gilbert
2019-11-19 4:41 ` Martin K. Petersen
1 sibling, 0 replies; 3+ messages in thread
From: Douglas Gilbert @ 2019-11-16 3:30 UTC (permalink / raw)
To: Maurizio Lombardi, jejb; +Cc: martin.petersen, linux-scsi
On 2019-11-16 3:37 a.m., Maurizio Lombardi wrote:
> Passing the parameter "num_tgts=-1" will start
> an infinite loop that exhausts the system memory
Ouch.
> Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
> ---
> drivers/scsi/scsi_debug.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
> index d323523f5f9d..32965ec76965 100644
> --- a/drivers/scsi/scsi_debug.c
> +++ b/drivers/scsi/scsi_debug.c
> @@ -5263,6 +5263,11 @@ static int __init scsi_debug_init(void)
> return -EINVAL;
> }
>
> + if (sdebug_num_tgts < 0) {
> + pr_err("num_tgts must be >= 0\n");
> + return -EINVAL;
> + }
> +
> if (sdebug_guard > 1) {
> pr_err("guard must be 0 or 1\n");
> return -EINVAL;
>
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] scsi_debug: num_tgts must be >= 0
2019-11-15 16:37 [PATCH] scsi_debug: num_tgts must be >= 0 Maurizio Lombardi
2019-11-16 3:30 ` Douglas Gilbert
@ 2019-11-19 4:41 ` Martin K. Petersen
1 sibling, 0 replies; 3+ messages in thread
From: Martin K. Petersen @ 2019-11-19 4:41 UTC (permalink / raw)
To: Maurizio Lombardi; +Cc: jejb, martin.petersen, linux-scsi
Maurizio,
> Passing the parameter "num_tgts=-1" will start an infinite loop that
> exhausts the system memory
Applied to 5.5/scsi-queue, thanks!
--
Martin K. Petersen Oracle Linux Engineering
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2019-11-19 4:43 UTC | newest]
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2019-11-15 16:37 [PATCH] scsi_debug: num_tgts must be >= 0 Maurizio Lombardi
2019-11-16 3:30 ` Douglas Gilbert
2019-11-19 4:41 ` Martin K. Petersen
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