5.15-stable review patch. If anyone has any objections, please let me know.
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From: Greg Kroah-Hartman gregkh@linuxfoundation.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@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 --- 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();