[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20231016083953.990262737@linuxfoundation.org>
Date: Mon, 16 Oct 2023 10:40:10 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: stable@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
patches@...ts.linux.dev, Andrew Donnellan <ajd@...ux.ibm.com>,
Alexander Potapenko <glider@...gle.com>,
Xiaoke Wang <xkernel.wang@...mail.com>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH 5.15 011/102] lib/test_meminit: fix off-by-one error in test_pages()
5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
commit efb78fa86e95 ("lib/test_meminit: allocate pages up to order
MAX_ORDER") works great in kernels 6.4 and newer thanks to commit
23baf831a32c ("mm, treewide: redefine MAX_ORDER sanely"), but for older
kernels, the loop is off by one, which causes crashes when the test
runs.
Fix this up by changing "<= MAX_ORDER" "< MAX_ORDER" to allow the test
to work properly for older kernel branches.
Fixes: 7ad44409cd3b ("lib/test_meminit: allocate pages up to order MAX_ORDER")
Cc: Andrew Donnellan <ajd@...ux.ibm.com>
Cc: Alexander Potapenko <glider@...gle.com>
Cc: Xiaoke Wang <xkernel.wang@...mail.com>
Cc: <stable@...r.kernel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
lib/test_meminit.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/lib/test_meminit.c
+++ b/lib/test_meminit.c
@@ -86,7 +86,7 @@ static int __init test_pages(int *total_
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();
Powered by blists - more mailing lists