From 4048774ea5af1721e5925b7cc0a74f1efad05c4d Mon Sep 17 00:00:00 2001 From: Ye Liu Date: Sun, 27 Apr 2025 18:04:41 +0800 Subject: [PATCH] mm/debug_page_alloc: improve error message for invalid guardpage minorder When an invalid debug_guardpage_minorder value is provided, include the user input in the error message. This helps users and developers diagnose configuration issues more easily. No functional change. Link: https://lkml.kernel.org/r/20250427100442.958352-3-ye.liu@linux.dev Signed-off-by: Ye Liu Acked-by: David Hildenbrand Reviewed-by: Anshuman Khandual Acked-by: Mike Rapoport (Microsoft) Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Rik van Riel Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- mm/debug_page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/debug_page_alloc.c b/mm/debug_page_alloc.c index d46acf989dde8..6a26eca546c33 100644 --- a/mm/debug_page_alloc.c +++ b/mm/debug_page_alloc.c @@ -23,7 +23,7 @@ static int __init debug_guardpage_minorder_setup(char *buf) unsigned long res; if (kstrtoul(buf, 10, &res) < 0 || res > MAX_PAGE_ORDER / 2) { - pr_err("Bad debug_guardpage_minorder value\n"); + pr_err("Bad debug_guardpage_minorder value: %s\n", buf); return 0; } _debug_guardpage_minorder = res; -- 2.39.5