This is a note to let you know that I've just added the patch titled io_uring: ensure that io_init_req() passes in the right issue_flags to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: io_uring-ensure-that-io_init_req-passes-in-the-right.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 8faad4b8f64aa27a54a5fbbe5c3163cc3b7dd61c Mon Sep 17 00:00:00 2001 From: Jens Axboe <axboe@xxxxxxxxx> Date: Fri, 3 Mar 2023 06:49:57 -0700 Subject: io_uring: ensure that io_init_req() passes in the right issue_flags From: Jens Axboe <axboe@xxxxxxxxx> We can't use 0 here, as io_init_req() is always invoked with the ctx uring_lock held. Newer kernels have IO_URING_F_UNLOCKED for this, but previously we used IO_URING_F_NONBLOCK to indicate this as well. Fixes: cf7f9cd50013 ("io_uring: add missing lock in io_get_file_fixed") Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- io_uring/io_uring.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -7310,7 +7310,8 @@ static int io_init_req(struct io_ring_ct if (io_op_defs[req->opcode].needs_file) { req->file = io_file_get(ctx, req, READ_ONCE(sqe->fd), - (sqe_flags & IOSQE_FIXED_FILE), 0); + (sqe_flags & IOSQE_FIXED_FILE), + IO_URING_F_NONBLOCK); if (unlikely(!req->file)) ret = -EBADF; } Patches currently in stable-queue which might be from axboe@xxxxxxxxx are queue-5.15/io_uring-ensure-that-io_init_req-passes-in-the-right.patch