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Date: Thu, 16 May 2024 09:30:16 +0700
From: Bagas Sanjaya <bagasdotme@gmail.com>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux Regressions <regressions@lists.linux.dev>,
	Linux Power Management <linux-pm@vger.kernel.org>,
	Linux Filesystems Development <linux-fsdevel@vger.kernel.org>
Cc: Christian Brauner <brauner@kernel.org>, Christoph Hellwig <hch@lst.de>,
	Jan Kara <jack@suse.cz>, Alexander Viro <viro@zeniv.linux.org.uk>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Pavel Machek <pavel@ucw.cz>, Len Brown <len.brown@intel.com>,
	Petri Kaukasoina <petri.kaukasoina@tuni.fi>
Subject: Fwd: Kernel panic in 6.9.0 after changes in kernel/power/swap.c
Message-ID: <ZkVvuKHV-jdOMnB1@archie.me>
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Hi,

Petri Kaukasoina <petri.kaukasoina@tuni.fi> reported on Bugzilla
(https://bugzilla.kernel.org/show_bug.cgi?id=3D218845) VFS kernel panic
regression when reading hibernation image. He wrote:

> 6.9.0 crashes on boot while 6.8.0 is ok.
>=20
> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block=
(8,1)
>=20
> bisect result:
>=20
> 4379f91172f39d999919c8e8b2b5e1d665d8972d is the first bad commit
> commit 4379f91172f39d999919c8e8b2b5e1d665d8972d
> Author: Christian Brauner <brauner@kernel.org>
> Date:   Tue Jan 23 14:26:23 2024 +0100
>=20
>     power: port block device access to file
>    =20
>     Link: https://lore.kernel.org/r/20240123-vfs-bdev-file-v2-6-adbd023e1=
9cc@kernel.org
>     Reviewed-by: Christoph Hellwig <hch@lst.de>
>     Reviewed-by: Jan Kara <jack@suse.cz>
>     Signed-off-by: Christian Brauner <brauner@kernel.org>
>=20
>  kernel/power/swap.c | 28 ++++++++++++++--------------
>=20
> 6.9.0 with only this reverted did not compile. This has something to do w=
ith reading a hibernation image from disk. I use a swap file, not a partiti=
on. The system was not hibernated, though. After I removed resume=3D and re=
sume_offset=3D from the kernel command line, even 6.9.0 boots without panic.
>=20

Thanks.

--=20
An old man doll... just what I always wanted! - Clara

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