From: Greg KH <gregkh@linuxfoundation.org>
To: Easwar Hariharan <eahariha@linux.microsoft.com>
Cc: stable@vger.kernel.org, Michael Kelley <mhklinux@outlook.com>,
"Martin K . Petersen" <martin.petersen@oracle.com>
Subject: Re: [PATCH 6.12.y] scsi: storvsc: Ratelimit warning logs to prevent VM denial of service
Date: Tue, 28 Jan 2025 06:35:07 +0100 [thread overview]
Message-ID: <2025012856-written-jarring-4843@gregkh> (raw)
In-Reply-To: <20250127182955.67606-1-eahariha@linux.microsoft.com>
On Mon, Jan 27, 2025 at 06:29:54PM +0000, Easwar Hariharan wrote:
> commit d2138eab8cde61e0e6f62d0713e45202e8457d6d upstream
>
> If there's a persistent error in the hypervisor, the SCSI warning for
> failed I/O can flood the kernel log and max out CPU utilization,
> preventing troubleshooting from the VM side. Ratelimit the warning so
> it doesn't DoS the VM.
>
> Closes: https://github.com/microsoft/WSL/issues/9173
> Signed-off-by: Easwar Hariharan <eahariha@linux.microsoft.com>
> Link: https://lore.kernel.org/r/20250107-eahariha-ratelimit-storvsc-v1-1-7fc193d1f2b0@linux.microsoft.com
> Reviewed-by: Michael Kelley <mhklinux@outlook.com>
> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
> Signed-off-by: Easwar Hariharan <eahariha@linux.microsoft.com>
> ---
> drivers/scsi/storvsc_drv.c | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
What about 6.13.y?
next prev parent reply other threads:[~2025-01-28 5:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-27 18:29 [PATCH 6.12.y] scsi: storvsc: Ratelimit warning logs to prevent VM denial of service Easwar Hariharan
2025-01-28 5:35 ` Greg KH [this message]
2025-01-28 17:08 ` Easwar Hariharan
2025-01-28 17:30 ` Greg KH
2025-01-28 16:17 ` Sasha Levin
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