USB: usbtmc: Fix RCU stall warning

[linux-2.6-microblaze.git] / fs / io_uring.c

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 117dc32..5a0fd6b 100644 (file)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1294,6 +1294,17 @@ static void io_queue_async_work(struct io_kiocb *req)
 
        /* init ->work of the whole link before punting */
        io_prep_async_link(req);
+
+       /*
+        * Not expected to happen, but if we do have a bug where this _can_
+        * happen, catch it here and ensure the request is marked as
+        * canceled. That will make io-wq go through the usual work cancel
+        * procedure rather than attempt to run this request (or create a new
+        * worker for it).
+        */
+       if (WARN_ON_ONCE(!same_thread_group(req->task, current)))
+               req->work.flags |= IO_WQ_WORK_CANCEL;
+
        trace_io_uring_queue_async_work(ctx, io_wq_is_hashed(&req->work), req,
                                        &req->work, req->flags);
        io_wq_enqueue(tctx->io_wq, &req->work);