This is a note to let you know that I've just added the patch titled
lib/test_meminit: fix off-by-one error in test_pages()
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
lib-test_meminit-fix-off-by-one-error-in-test_pages.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From gregkh@xxxxxxxxxxxxxxxxxxx Thu Oct 12 18:44:27 2023
From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Date: Thu, 12 Oct 2023 10:17:39 +0200
Subject: lib/test_meminit: fix off-by-one error in test_pages()
To: linux-kernel@xxxxxxxxxxxxxxx
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, Andrew Donnellan <ajd@xxxxxxxxxxxxx>, Alexander Potapenko <glider@xxxxxxxxxx>, Xiaoke Wang <xkernel.wang@xxxxxxxxxxx>, stable@xxxxxxxxxxxxxxx, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Message-ID: <2023101238-greasily-reiterate-aafc@gregkh>
From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
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: cbfffe51221b ("lib/test_meminit: allocate pages up to order MAX_ORDER")
Cc: Andrew Donnellan <ajd@xxxxxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Xiaoke Wang <xkernel.wang@xxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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();
Patches currently in stable-queue which might be from gregkh@xxxxxxxxxxxxxxxxxxx are
queue-5.4/lib-test_meminit-fix-off-by-one-error-in-test_pages.patch
