linux-kernel - Re: [PATCH 1/2] drivers: watchdog: Add support for panic notifier callback

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <753aca13-e576-4784-80a5-ab8c21e92148@roeck-us.net>
Date: Thu, 20 Feb 2025 21:04:07 -0800
From: Guenter Roeck <linux@...ck-us.net>
To: George Cherian <george.cherian@...vell.com>, wim@...ux-watchdog.org,
 corbet@....net
Cc: linux-watchdog@...r.kernel.org, linux-doc@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] drivers: watchdog: Add support for panic notifier
 callback

On 2/20/25 18:35, George Cherian wrote:
> Watchdog is not turned off in kernel panic situation.
> In certain systems this might prevent the successful loading
> of kdump kernel. The kdump kernel might hit a watchdog reset
> while it is booting.
> 
> To avoid such scenarios add a panic notifier call back function
> which can stop the watchdog. This provision can be enabled on per
> driver basis if the user wishes to by setting the flag
> WDOG_STOP_ON_PANIC from respective drivers.
> 

I think this makes sense in principal, but it should not be driver specific.

Guenter