Registered I/O buffers could overflow on 32-bit kernels
Brief
The message names 32-bit only. ## Notes 6ca662cc71df7eb4eaf1b4bcb07cd3f188ad19f2 (Jérémy Jean, Jens Axboe). Reject an overflowing registered-buffer byte count. Fixes: b4e41050b212. No Cc: stable. No CVE in the commit. Landed via 0bae94aab820 (io_uring-7.2-20260815). File the child, not the merge.
Commit 6ca662cc71df7eb4eaf1b4bcb07cd3f188ad19f2