[GIT PULL] io_uring fixes for 7.2-rc6

Hi Linus,

A few fixes for io_uring that should go into the 7.2 kernel release.
This pull request contains:

- Fix for a bug in how length caps are handled in multishot, and along
  with it, a generic fix for avoiding these kinds of conversion issues
  in the future.

- Ensure that task restrictions are always preserved across exec.

- Revert of the io_uring controlled epoll restriction, which disallowed
  nested contexts. Turns out that libuv is already using it like that,
  so we cannot simply remove it, sadly.

- Fix for a reference leak in the zcrx code.

Please pull!


The following changes since commit f5098b6bae761e346ebcd9da7f95622c04733cff:

  Linux 7.2-rc5 (2026-07-26 14:45:48 -0700)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux.git tags/io_uring-7.2-20260731

for you to fetch changes up to bc0e8faf90e776a2f1f3967a04e8091e6bdb4977:

  io_uring: preserve task restrictions across exec (2026-07-30 14:40:22 -0600)

----------------------------------------------------------------
io_uring-7.2-20260731

----------------------------------------------------------------
Jens Axboe (3):
      io_uring/net: initialize mshot_len for send
      io_uring/kbuf: cap buffer selection length at MAX_RW_COUNT
      Revert "io_uring/epoll: disallow adding an epoll file to an epoll context"

Kyumin Lee (1):
      io_uring: preserve task restrictions across exec

Woraphat Khiaodaeng (1):
      io_uring/zcrx: don't clear master_ctx from the import path

 io_uring/cancel.c | 2 +-
 io_uring/epoll.c  | 3 ---
 io_uring/kbuf.c   | 5 ++++-
 io_uring/net.c    | 1 +
 io_uring/tctx.c   | 7 ++++++-
 io_uring/tctx.h   | 1 +
 io_uring/zcrx.c   | 3 ++-
 7 files changed, 15 insertions(+), 7 deletions(-)

-- 
Jens Axboe