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 5.10-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-5.10 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: 08681391b84d ("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
@@ -7139,7 +7139,8 @@ 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-5.10/io_uring-ensure-that-io_init_req-passes-in-the-right.patch
