FAILED: patch "[PATCH] io_uring: don't attempt IO reissue from the ring exit path" failed to apply to 5.10-stable tree

The patch below does not apply to the 5.10-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 7c977a58dc83366e488c217fd88b1469d242bee5 Mon Sep 17 00:00:00 2001
From: Jens Axboe <[email protected]>
Date: Tue, 23 Feb 2021 19:17:35 -0700
Subject: [PATCH] io_uring: don't attempt IO reissue from the ring exit path

If we're exiting the ring, just let the IO fail with -EAGAIN as nobody will care anyway. It's not the right context to reissue from.

index bf9ad810c621..275ad84e8227 100644
@@ -2839,6 +2839,13 @@ static bool io_rw_reissue(struct io_kiocb *req)
 		return false;
 	if ((req->flags & REQ_F_NOWAIT) || io_wq_current_is_worker())
 		return false;
+	/*
+	 * If ref is dying, we might be running poll reap from the exit work.
+	 * Don't attempt to reissue from that path, just let it fail with
+	 * -EAGAIN.
+	 */
+	if (percpu_ref_is_dying(&req->ctx->refs))
+		return false;
 
 	lockdep_assert_held(&req->ctx->uring_lock);