linux-kernel - Re: [PATCH][next] dm ioctl: rate limit a couple of ioctl based error messages

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Message-ID: <ZyEQ-mT-ojb6R0a7@kernel.org>
Date: Tue, 29 Oct 2024 12:44:42 -0400
From: Mike Snitzer <snitzer@...nel.org>
To: Colin Ian King <colin.i.king@...il.com>
Cc: Alasdair Kergon <agk@...hat.com>, Mikulas Patocka <mpatocka@...hat.com>,
	dm-devel@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] dm ioctl: rate limit a couple of ioctl based error
 messages

On Thu, Oct 24, 2024 at 12:04:31PM +0100, Colin Ian King wrote:
> It is possible to spam the kernel log with a misbehaving user process that
> is passing incorrect dm ioctls to /dev/mapper/control. Use a rate limit
> on these error messages to reduce the noise.
> 
> Signed-off-by: Colin Ian King <colin.i.king@...il.com>

Mikulas, please update the header to include the context that
stress-ng is what Colin was using when he experienced excessive
warnings.

Thanks.

Acked-by: Mike Snitzer <snitzer@...nel.org>