On 13.08.24 17:07, Suren Baghdasaryan wrote:
During CMA activation, pages in CMA area are prepared and then freed without being allocated. This triggers warnings when memory allocation debug config (CONFIG_MEM_ALLOC_PROFILING_DEBUG) is enabled. Fix this by marking these pages not tagged before freeing them.
Fixes: d224eb0287fb ("codetag: debug: mark codetags for reserved pages as empty") Signed-off-by: Suren Baghdasaryan surenb@google.com Cc: stable@vger.kernel.org # v6.10
Changes since v2 [1]:
- Add and use clear_page_tag_ref helper, per David Hildenbrand
https://lore.kernel.org/all/20240812192428.151825-1-surenb@google.com/
mm/mm_init.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/mm/mm_init.c b/mm/mm_init.c index 907c46b0773f..13c4060bb01a 100644 --- a/mm/mm_init.c +++ b/mm/mm_init.c @@ -2245,6 +2245,8 @@ void __init init_cma_reserved_pageblock(struct page *page) set_pageblock_migratetype(page, MIGRATE_CMA); set_page_refcounted(page);
- /* pages were reserved and not allocated */
- clear_page_tag_ref(page); __free_pages(page, pageblock_order);
adjust_managed_page_count(page, pageblock_nr_pages);
Acked-by: David Hildenbrand david@redhat.com