On Tue, 14 Jan 2025 18:49:00 +0100, Jann Horn wrote:
> When IORING_REGISTER_CLONE_BUFFERS is used to clone buffers from uring
> instance A to uring instance B, where A and B use different MMs for
> accounting, the accounting can go wrong:
> If uring instance A is closed before uring instance B, the pinned memory
> counters for uring instance B will be decremented, even though the pinned
> memory was originally accounted through uring instance A; so the MM of
> uring instance B can end up with negative locked memory.
>
> [...]
Applied, thanks!
[1/1] io_uring/rsrc: require cloned buffers to share accounting contexts
commit: 19d340a2988d4f3e673cded9dde405d727d7e248
Best regards,
--
Jens Axboe
