Please backport to the following patch which was merged upstream.
It should apply to linux-5.4.y and later.
commit 29be9100aca2915fab54b5693309bc42956542e5
Author: Marc Dionne <[email protected]>1
Date: Fri May 24 17:17:55 2024 +0100
afs: Don't cross .backup mountpoint from backup volume
Don't cross a mountpoint that explicitly specifies a backup volume
(target is <vol>.backup) when starting from a backup volume.
It it not uncommon to mount a volume's backup directly in the volume
itself. This can cause tools that are not paying attention to get
into a loop mounting the volume onto itself as they attempt to
traverse the tree, leading to a variety of problems.
This doesn't prevent the general case of loops in a sequence of
mountpoints, but addresses a common special case in the same way
as other afs clients.
Reported-by: Jan Henrik Sylvester <[email protected]>
Link:
http://lists.infradead.org/pipermail/linux-afs/2024-May/008454.html
Reported-by: Markus Suvanto <[email protected]>
Link:
http://lists.infradead.org/pipermail/linux-afs/2024-February/008074.html
Signed-off-by: Marc Dionne <[email protected]>
Signed-off-by: David Howells <[email protected]>
Link:
https://lore.kernel.org/r/[email protected]
Reviewed-by: Jeffrey Altman <[email protected]>
cc: [email protected]
Signed-off-by: Christian Brauner <[email protected]>
Thank you.
Jeffrey Altman
On Tue, Jun 04, 2024 at 11:50:06AM -0400, Jeffrey E Altman wrote:
> Please backport to the following patch which was merged upstream.
>
> It should apply to linux-5.4.y and later.
>
> commit 29be9100aca2915fab54b5693309bc42956542e5
Now queued up, thanks.
greg k-h