linux-kernel - Fwd: Kernel panic in 6.9.0 after changes in kernel/power/swap.c

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Date: Thu, 16 May 2024 09:30:16 +0700
From: Bagas Sanjaya <bagasdotme@...il.com>
To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Regressions <regressions@...ts.linux.dev>,
	Linux Power Management <linux-pm@...r.kernel.org>,
	Linux Filesystems Development <linux-fsdevel@...r.kernel.org>
Cc: Christian Brauner <brauner@...nel.org>, Christoph Hellwig <hch@....de>,
	Jan Kara <jack@...e.cz>, Alexander Viro <viro@...iv.linux.org.uk>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Pavel Machek <pavel@....cz>, Len Brown <len.brown@...el.com>,
	Petri Kaukasoina <petri.kaukasoina@...i.fi>
Subject: Fwd: Kernel panic in 6.9.0 after changes in kernel/power/swap.c

Hi,

Petri Kaukasoina <petri.kaukasoina@...i.fi> reported on Bugzilla
(https://bugzilla.kernel.org/show_bug.cgi?id=218845) VFS kernel panic
regression when reading hibernation image. He wrote:

> 6.9.0 crashes on boot while 6.8.0 is ok.
> 
> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,1)
> 
> bisect result:
> 
> 4379f91172f39d999919c8e8b2b5e1d665d8972d is the first bad commit
> commit 4379f91172f39d999919c8e8b2b5e1d665d8972d
> Author: Christian Brauner <brauner@...nel.org>
> Date:   Tue Jan 23 14:26:23 2024 +0100
> 
>     power: port block device access to file
>     
>     Link: https://lore.kernel.org/r/20240123-vfs-bdev-file-v2-6-adbd023e19cc@kernel.org
>     Reviewed-by: Christoph Hellwig <hch@....de>
>     Reviewed-by: Jan Kara <jack@...e.cz>
>     Signed-off-by: Christian Brauner <brauner@...nel.org>
> 
>  kernel/power/swap.c | 28 ++++++++++++++--------------
> 
> 6.9.0 with only this reverted did not compile. This has something to do with reading a hibernation image from disk. I use a swap file, not a partition. The system was not hibernated, though. After I removed resume= and resume_offset= from the kernel command line, even 6.9.0 boots without panic.
> 

Thanks.

-- 
An old man doll... just what I always wanted! - Clara

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