[GIT PULL] io_uring fixes for 6.15-rc2

[Jens Axboe <axboe@kernel.dk>]

Hi Linus,

A few small fixes that should go into the 6.15 kernel release. This pull
request contains:

- Reject zero sized legacy provided buffers upfront. No ill side effects
  from this one, only really done to shut up a silly syzbot test case.

- Fix for a regression in tag posting for registered files or buffers,
  where the tag would be posted even when the registration failed.

- 2 minor zcrx cleanups for code added this merge window.

Please pull!


The following changes since commit e48e99b6edf41c69c5528aa7ffb2daf3c59ee105:

  Merge tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs (2025-04-03 21:12:48 -0700)

are available in the Git repository at:

  git://git.kernel.dk/linux.git tags/io_uring-6.15-20250410

for you to fetch changes up to cf960726eb65e8d0bfecbcce6cf95f47b1ffa6cc:

  io_uring/kbuf: reject zero sized provided buffers (2025-04-07 07:51:23 -0600)

----------------------------------------------------------------
io_uring-6.15-20250410

----------------------------------------------------------------
Jens Axboe (1):
      io_uring/kbuf: reject zero sized provided buffers

Pavel Begunkov (3):
      io_uring: don't post tag CQEs on file/buffer registration failure
      io_uring/zcrx: put refill data into separate cache line
      io_uring/zcrx: separate niov number from pages

 io_uring/kbuf.c |  2 ++
 io_uring/rsrc.c | 17 ++++++++++++++++-
 io_uring/zcrx.c | 19 ++++++++++---------
 io_uring/zcrx.h |  5 +++--
 4 files changed, 31 insertions(+), 12 deletions(-)

-- 
Jens Axboe