Re: [PATCH] eventpoll: wake the next waiter when a woken waiter is killed

[Christian Brauner]

On Tue, 03 Nov 2026 13:19:01 -0500, Mani Tofigh wrote:
> Processes sharing an epoll instance can sleep forever while an event is
> ready.  An event wakes only one waiter, which then wakes the next one in
> ep_done_scan() if events are still ready.  Since commit c257a340ede0
> ("fs, epoll: short circuit fetching events if thread has been killed"),
> ep_send_events() returns before the scan when the waiter has a fatal
> signal.  If the woken waiter is killed before it runs, nobody wakes the
> next one:
> 
> [...]

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] eventpoll: wake the next waiter when a woken waiter is killed
      https://git.kernel.org/vfs/vfs/c/06fd21622a31