Re: [PATCH] autofs: ignore notification errors from a replaced pipe

[Christian Brauner]

On Thu, 08 Oct 2026 02:35:42 +0900, tjdqudcks0424@xxxxxxxxx wrote:
> autofs_notify_daemon() takes a reference to the current notification
> pipe under wq_mutex, then drops the mutex before writing the request. The
> write can block while the daemon enters catatonic mode and installs a
> replacement pipe.
> 
> If the old pipe's reader is then closed, the delayed write returns -EPIPE
> and the generic error path enters catatonic mode again. That transition
> acts on the current superblock state, closes the replacement pipe, and
> releases the new daemon generation's wait queues.
> 
> [...]

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] autofs: ignore notification errors from a replaced pipe
      https://git.kernel.org/vfs/vfs/c/d4ca8f75bc42