tree 05001a38a5dfca0c11534638dc5e59dc5b7c7a01
parent a296620165536ed62b41577b249440abef4e5196
author Jens Axboe <axboe@kernel.dk> 1677851397 -0700
committer Meena Shanmugam <meenashanmugam@google.com> 1681874989 +0000

io_uring: ensure that io_init_req() passes in the right issue_flags

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.

BUG=b/277048957,b/277623506
TEST=presubmit,validation
RELEASE_NOTE=Fixed race condition in io_uring in the Linux kernel.

Fixes: 08681391b84d ("io_uring: add missing lock in io_get_file_fixed")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

cos-patch: security-moderate
Change-Id: I7c1c1d1929faf673627904d84da55c5298add77c
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/46468
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/46908