On Mon, Feb 10, 2025 at 03:21:36PM +0000, Pavel Begunkov wrote:
> [ upstream commit d63b0e8a628e62ca85a0f7915230186bb92f8bb4 ]
>
> We do io_kbuf_recycle() when arming a poll but every iteration of a
> multishot can grab more buffers, which is why we need to flush the kbuf
> ring state before continuing with waiting.
>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: b3fdea6ecb55c ("io_uring: multishot recv")
> Reported-by: Muhammad Ramdhan <ramdhan@xxxxxxxxxxx>
> Reported-by: Bing-Jhong Billy Jheng <billy@xxxxxxxxxxx>
> Reported-by: Jacob Soo <jacob.soo@xxxxxxxxxxx>
> Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
> Link: https://lore.kernel.org/r/1bfc9990fe435f1fc6152ca9efeba5eb3e68339c.1738025570.git.asml.silence@xxxxxxxxx
> Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
> ---
> io_uring/poll.c | 2 ++
> 1 file changed, 2 insertions(+)
This is already in our 6.6.y queue, thanks!
greg k-h
