FAILED: patch "[PATCH] mm/gup_test: fix ioctl fail for compat task" failed to apply to 5.15-stable tree

The patch below does not apply to the 5.15-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]>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y
git checkout FETCH_HEAD
git cherry-pick -x 4f572f0074b8be8a70bd150d96a749aa94c8d85f
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2023061750-projector-duplicate-1096@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

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

From 4f572f0074b8be8a70bd150d96a749aa94c8d85f Mon Sep 17 00:00:00 2001
From: Haibo Li <[email protected]>
Date: Fri, 26 May 2023 10:21:25 +0800
Subject: [PATCH] mm/gup_test: fix ioctl fail for compat task

When tools/testing/selftests/mm/gup_test.c is compiled as 32bit, then run on arm64 kernel, it reports "ioctl: Inappropriate ioctl for device".

Fix it by filling compat_ioctl in gup_test_fops

index 8ae7307a1bb6..c0421b786dcd 100644
@@ -381,6 +381,7 @@ static int gup_test_release(struct inode *inode, struct file *file)
 static const struct file_operations gup_test_fops = {
 	.open = nonseekable_open,
 	.unlocked_ioctl = gup_test_ioctl,
+	.compat_ioctl = compat_ptr_ioctl,
 	.release = gup_test_release,
 };