6.2-stable patches

added patches:
	io_uring-mark-task-task_running-before-handling-resume-task-work.patch

diff --git a/queue-6.2/io_uring-mark-task-task_running-before-handling-resume-task-work.patch b/queue-6.2/io_uring-mark-task-task_running-before-handling-resume-task-work.patch
new file mode 100644 (file)
index 0000000..bf23e7a
--- /dev/null
+++ b/queue-6.2/io_uring-mark-task-task_running-before-handling-resume-task-work.patch
@@ -0,0 +1,39 @@
+From 2f2bb1ffc9983e227424d0787289da5483b0c74f Mon Sep 17 00:00:00 2001
+From: Jens Axboe <axboe@kernel.dk>
+Date: Mon, 6 Feb 2023 08:20:46 -0700
+Subject: io_uring: mark task TASK_RUNNING before handling resume/task work
+
+From: Jens Axboe <axboe@kernel.dk>
+
+commit 2f2bb1ffc9983e227424d0787289da5483b0c74f upstream.
+
+Just like for task_work, set the task mode to TASK_RUNNING before doing
+any potential resume work. We're not holding any locks at this point,
+but we may have already set the task state to TASK_INTERRUPTIBLE in
+preparation for going to sleep waiting for events. Ensure that we set it
+back to TASK_RUNNING if we have work to process, to avoid warnings on
+calling blocking operations with !TASK_RUNNING.
+
+Fixes: b5d3ae202fbf ("io_uring: handle TIF_NOTIFY_RESUME when checking for task_work")
+Reported-by: kernel test robot <oliver.sang@intel.com>
+Link: https://lore.kernel.org/oe-lkp/202302062208.24d3e563-oliver.sang@intel.com
+Signed-off-by: Jens Axboe <axboe@kernel.dk>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ io_uring/io_uring.h |    4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/io_uring/io_uring.h
++++ b/io_uring/io_uring.h
+@@ -276,8 +276,10 @@ static inline int io_run_task_work(void)
+        * notify work that needs processing.
+        */
+       if (current->flags & PF_IO_WORKER &&
+-          test_thread_flag(TIF_NOTIFY_RESUME))
++          test_thread_flag(TIF_NOTIFY_RESUME)) {
++              __set_current_state(TASK_RUNNING);
+               resume_user_mode_work(NULL);
++      }
+       if (task_work_pending(current)) {
+               __set_current_state(TASK_RUNNING);
+               task_work_run();

diff --git a/queue-6.2/series b/queue-6.2/series
index c9d7cbcbcfefc0834b2f092b903b66780de8a372..e870c957fad35cffcb4d0b21671799b878de85c2 100644 (file)
--- a/queue-6.2/series
+++ b/queue-6.2/series
@@ -788,3 +788,4 @@ ksmbd-do-not-allow-the-actual-frame-length-to-be-smaller-than-the-rfc1002-length
 ksmbd-fix-possible-memory-leak-in-smb2_lock.patch
 torture-fix-hang-during-kthread-shutdown-phase.patch
 arm-dts-exynos-correct-hdmi-phy-compatible-in-exynos4.patch
+io_uring-mark-task-task_running-before-handling-resume-task-work.patch