diff options
| author | Suren Baghdasaryan <surenb@google.com> | 2022-12-23 00:26:19 +0000 |
|---|---|---|
| committer | Suren Baghdasaryan <surenb@google.com> | 2024-02-11 10:45:55 -0800 |
| commit | f9e719d34798eefd31024f2842cd09b6b3857dfa (patch) | |
| tree | 9135fb7348555a9bb599e438ead0ed08a17e26a4 /mm/mm_init.c | |
| parent | 3ab9e6a75308b9ba298489ba5294d34cf7baf10d (diff) | |
codetag: debug: mark codetags for reserved pages as empty
To avoid debug warnings while freeing reserved pages which were not
allocated with usual allocators, mark their codetags as empty before
freeing.
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Diffstat (limited to 'mm/mm_init.c')
| -rw-r--r-- | mm/mm_init.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/mm/mm_init.c b/mm/mm_init.c index e9ea2919d02d..f5386632fe86 100644 --- a/mm/mm_init.c +++ b/mm/mm_init.c @@ -2566,6 +2566,7 @@ void __init set_dma_reserve(unsigned long new_dma_reserve) void __init memblock_free_pages(struct page *page, unsigned long pfn, unsigned int order) { + union codetag_ref *ref; if (IS_ENABLED(CONFIG_DEFERRED_STRUCT_PAGE_INIT)) { int nid = early_pfn_to_nid(pfn); @@ -2578,6 +2579,14 @@ void __init memblock_free_pages(struct page *page, unsigned long pfn, /* KMSAN will take care of these pages. */ return; } + + /* pages were reserved and not allocated */ + ref = get_page_tag_ref(page); + if (ref) { + set_codetag_empty(ref); + put_page_tag_ref(ref); + } + __free_pages_core(page, order); } |