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This pull request contains: - A fix for a missing URING_CMD128 opcode check, fixing an issue with the SQE mixed mode support introduced in 6.19. Merged late due to having multiple dependencies. - Add sqe->cmd size checking for big SQEs, similar to what we have for normal sized SQEs. - Fix a race condition in zcrx, that leads to a double free. Please pull! The following changes since commit 2961f841b025fb234860bac26dfb7fa7cb0fb122: Merge tag 'turbostat-2026.02.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux (2026-02-17 15:51:14 -0800) are available in the Git repository at: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux.git tags/io_uring-20260221 for you to fetch changes up to ea129e55c9e06a51a93c3f5ef3e32a6cfa3f8ec7: io_uring: Add size check for sqe->cmd (2026-02-19 07:26:26 -0700) ---------------------------------------------------------------- io_uring-20260221 ---------------------------------------------------------------- Caleb Sander Mateos (1): io_uring: add IORING_OP_URING_CMD128 to opcode checks Govindarajulu Varadarajan (1): io_uring: Add size check for sqe->cmd Kai Aizen (1): io_uring/zcrx: fix user_ref race between scrub and refill paths drivers/block/ublk_drv.c | 12 ++++++++---- drivers/nvme/host/ioctl.c | 3 ++- fs/fuse/dev_uring.c | 6 ++++-- include/linux/io_uring/cmd.h | 15 +++++++++++---- io_uring/io_uring.h | 6 ++++++ io_uring/kbuf.c | 2 +- io_uring/rw.c | 4 ++-- io_uring/zcrx.c | 10 +++++++--- 8 files changed, 41 insertions(+), 17 deletions(-) -- Jens Axboe