Re: [PATCH] io_uring/kbuf: cap buffer selection length at MAX_RW_COUNT
Gabriel Krisman Bertazi <[email protected]> Sun, 26 Jul 2026 20:12:07 -0400
| Newsgroups | org.kernel.vger.io-uring |
|---|---|
| Organization | SUSE |
| Message-ID | <[email protected]> |
Jens Axboe <[email protected]> writes: > io_ring_buffers_peek() builds an iovec array from provided buffers, and > that in turn can be handed off to a lower level provider. Be prudent and > cap the total size to MAX_RW_COUNT, which is the Linux default for how > much IO do to in a single call. > > No bugs here, but it's a good preventative measure to avoid truncation > issues. > > Signed-off-by: Jens Axboe <[email protected]> Reviewed-by: Gabriel Krisman Bertazi <[email protected]>