From 84ae70e7870598e1afc4efe6e9133a0ec6acb226 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@google.com>
Date: Wed, 11 Oct 2023 19:34:29 +0000
Subject: [PATCH] FROMLIST: lib/test_meminit: fix off-by-one error in
 test_pages()

In commit efb78fa86e95 ("lib/test_meminit: allocate pages up to order
MAX_ORDER"), the loop for testing pages is set to "<= MAX_ORDER" which
causes crashes in systems when run.  Fix this to "< MAX_ORDER" to fix
the test to work properly.

Fixes: efb78fa86e95 ("lib/test_meminit: allocate pages up to order MAX_ORDER")
Cc: Andrew Donnellan <ajd@linux.ibm.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Xiaoke Wang <xkernel.wang@foxmail.com>
Cc: <stable@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change-Id: I213f196c8e32ca18f61c1929d4191a1a368fda06
Link: https://lore.kernel.org/lkml/2023101238-greasily-reiterate-aafc@gregkh/
Fixes: 2a1cf9fe09d9 ("lib/test_meminit: allocate pages up to order MAX_ORDER")
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
---
 lib/test_meminit.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/test_meminit.c b/lib/test_meminit.c
index 75638404ed57..0f1a3bd09b7b 100644
--- a/lib/test_meminit.c
+++ b/lib/test_meminit.c
@@ -86,7 +86,7 @@ static int __init test_pages(int *total_failures)
 	int failures = 0, num_tests = 0;
 	int i;
 
-	for (i = 0; i <= MAX_ORDER; i++)
+	for (i = 0; i < MAX_ORDER; i++)
 		num_tests += do_alloc_pages_order(i, &failures);
 
 	REPORT_FAILURES_IN_FN();