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UPSTREAM: lib/test_meminit: fix off-by-one error in test_pages()

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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: 421855d0d2 ("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>
Change-Id: I3c6b6482a276b51273be5fa38ab9d5539d0878fd
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 38fd36728f)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Greg Kroah-Hartman 2023-10-12 10:17:39 +02:00 • committed by Greg Kroah-Hartman
parent 5cdaba14b8
commit 9f7988e6d7
1 changed files with 1 additions and 1 deletions
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2
lib/test_meminit.c
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@ -93,7 +93,7 @@ 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();