Re: [PATCH 1/2] fuse: set FR_PENDING under fiq->lock in fuse_chan_resend()

[Miklos Szeredi]

On Tue, 4 Aug 2026 at 11:18, Jun Yang <littleddfu@xxxxxxxxx> wrote:

> Publish FR_PENDING under fiq->lock, immediately before the splice that
> actually puts the requests on fiq->pending, and fold the intr_entry cleanup
> into the same locked walk. A waiter that arrives while the requests are
> still on the stack now sees FR_PENDING clear, so fuse_remove_pending_req()
> returns false and it falls through to wait_event(FR_FINISHED) -- the same
> handling a request already handed to userspace gets. The !fiq->connected
> path no longer needs to clear the bit, because it was never set.

Thanks for the report and patch.

Commit ed9c881f3b49 ("fuse: fix race between interrupt and resend")
found in git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git
#for-next contains a very similar fix.

Thanks,
Miklos