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-rw-r--r--fs/io_uring.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 117dc32eb8a8..5a0fd6bcd318 100644
--- 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);