io_uring: kill goto error handling in io_sqpoll_wait_sq()
Hunk extracted from commit 70aacfe66136809d7f080f89c492c278298719f4
upstream.
If the sqpoll thread has died, the out condition doesn't remove the
waiting task from the waitqueue. The goto and check are not needed, just
make it a break condition after setting the error value. That ensures
that we always remove ourselves from sqo_sq_wait waitqueue.
BUG=b/264520227
TEST=presubmit
RELEASE_NOTE=Fixed CVE-2022-47946 in the Linux kernel.
Reported-by: Xingyuan Mo <hdthky0@gmail.com>
Change-Id: Ic1df8e0942beb5c0af6367cb75b0e4924227133e
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/40938
Reviewed-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
1 file changed
