linux-kernel - Re: (subset) [PATCH 5/8] afs: Fix possible infinite loop with unresponsive servers

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Message-ID: <20240927-raunt-gekrochen-aa4fd2c2e59b@brauner>
Date: Fri, 27 Sep 2024 10:05:44 +0200
From: Christian Brauner <brauner@...nel.org>
To: David Howells <dhowells@...hat.com>
Cc: Christian Brauner <brauner@...nel.org>,
	Paulo Alcantara <pc@...guebit.com>,
	Jeff Layton <jlayton@...nel.org>,
	Matthew Wilcox <willy@...radead.org>,
	netfs@...ts.linux.dev,
	linux-afs@...ts.infradead.org,
	linux-cifs@...r.kernel.org,
	linux-nfs@...r.kernel.org,
	ceph-devel@...r.kernel.org,
	v9fs@...ts.linux.dev,
	linux-erofs@...ts.ozlabs.org,
	linux-fsdevel@...r.kernel.org,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Markus Suvanto <markus.suvanto@...il.com>,
	Steve French <sfrench@...ba.org>,
	Marc Dionne <marc.dionne@...istor.com>
Subject: Re: (subset) [PATCH 5/8] afs: Fix possible infinite loop with unresponsive servers

On Mon, 23 Sep 2024 16:07:49 +0100, David Howells wrote:
> A return code of 0 from afs_wait_for_one_fs_probe is an indication
> that the endpoint state attached to the operation is stale and has
> been superseded.  In that case the iteration needs to be restarted
> so that the newer probe result state gets used.
> 
> Failure to do so can result in an tight infinite loop around the
> iterate_address label, where all addresses are thought to be responsive
> and have been tried, with nothing to refresh the endpoint state.
> 
> [...]

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

[5/8] afs: Fix possible infinite loop with unresponsive servers
      https://git.kernel.org/vfs/vfs/c/6e45740867ee