linux-kernel - Re: [PATCH] kernel: add boot param to disable stack dump on panic

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

Message-ID: <20240208081425.GA1511946@lichtman.org>
Date: Thu, 8 Feb 2024 08:14:25 +0000
From: Nir Lichtman <nir@...htman.org>
To: Bagas Sanjaya <bagasdotme@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kernel: add boot param to disable stack dump on panic

In a lot of cases when there is a kernel panic it obscures on the display the previous problem that caused it and the main
reason is that the call stack prints a lot of lines on the display - and there is no way to scroll back up.
What led me to make this patch is that I was working on running the kernel on my old computer and when I passed root=/dev/sda
to the kernel there was a panic and it could not start init, but since the call stack took almost all the space on the screen,
I couldn't see the available partitions the kernel does detects.

After this patch, I could just pass in the new boot parameter I added here and then it would not print the call stack,
and I saw the line in which the kernel prints the available partitions.

On Wed, Feb 07, 2024 at 09:10:22AM +0700, Bagas Sanjaya wrote:
> On Tue, Feb 06, 2024 at 09:39:02PM +0000, Nir Lichtman wrote:
> > From: Nir Lichtman <nir@...htman.org>
> > Date: Sat, 3 Feb 2024 10:19:30 +0200
> > Subject: [PATCH] kernel: add boot param to disable stack dump on panic
> > 
> 
> Can you describe why this patch is needed (or beneficial)?
> 
> Confused...
> 
> -- 
> An old man doll... just what I always wanted! - Clara