linux-kernel - Re: [PATCH] afs: Fix dynamic lookup to fail on cell lookup failure

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Message-ID: <20251029-abgibt-bisweilen-e4d33dc3dbbe@brauner>
Date: Wed, 29 Oct 2025 13:51:52 +0100
From: Christian Brauner <brauner@...nel.org>
To: Markus Suvanto <markus.suvanto@...il.com>,
	David Howells <dhowells@...hat.com>
Cc: Christian Brauner <brauner@...nel.org>,
	Marc Dionne <marc.dionne@...istor.com>,
	linux-afs@...ts.infradead.org,
	linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] afs: Fix dynamic lookup to fail on cell lookup failure

On Wed, 22 Oct 2025 19:48:32 +0100, David Howells wrote:
> When a process tries to access an entry in /afs, normally what happens is
> that an automount dentry is created by ->lookup() and then triggered, which
> jumps through the ->d_automount() op.  Currently, afs_dynroot_lookup() does
> not do cell DNS lookup, leaving that to afs_d_automount() to perform -
> however, it is possible to use access() or stat() on the automount point,
> which will always return successfully, have briefly created an afs_cell
> record if one did not already exist.
> 
> [...]

Applied to the vfs.fixes branch of the vfs/vfs.git tree.
Patches in the vfs.fixes branch should appear in linux-next soon.

Please report any outstanding bugs that were missed during review in a
new review to the original patch series allowing us to drop it.

It's encouraged to provide Acked-bys and Reviewed-bys even though the
patch has now been applied. If possible patch trailers will be updated.

Note that commit hashes shown below are subject to change due to rebase,
trailer updates or similar. If in doubt, please check the listed branch.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git
branch: vfs.fixes

[1/1] afs: Fix dynamic lookup to fail on cell lookup failure
      https://git.kernel.org/vfs/vfs/c/330e2c514823