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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2021-10-04 16:46:46 +0300 |
|---|---|---|
| committer | Vlastimil Babka <vbabka@suse.cz> | 2022-01-06 14:26:14 +0300 |
| commit | 6e48a966dfd18987fec9385566a67d36e2b5fc11 (patch) | |
| tree | 86563a5541c93ba5be6ba7963d2e58ada19ebd82 /mm/slab.c | |
| parent | 50757018b4c9b02dbf7fcc0514e0fc45b8689c62 (diff) | |
| download | linux-6e48a966dfd18987fec9385566a67d36e2b5fc11.tar.xz | |
mm/kasan: Convert to struct folio and struct slab
KASAN accesses some slab related struct page fields so we need to
convert it to struct slab. Some places are a bit simplified thanks to
kasan_addr_to_slab() encapsulating the PageSlab flag check through
virt_to_slab(). When resolving object address to either a real slab or
a large kmalloc, use struct folio as the intermediate type for testing
the slab flag to avoid unnecessary implicit compound_head().
[ vbabka@suse.cz: use struct folio, adjust to differences in previous
patches ]
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Reviewed-by: Roman Gushchin <guro@fb.com>
Tested-by: Hyeongogn Yoo <42.hyeyoo@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: <kasan-dev@googlegroups.com>
Diffstat (limited to 'mm/slab.c')
| -rw-r--r-- | mm/slab.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/slab.c b/mm/slab.c index c13258116791..ddf5737c63d9 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -2604,7 +2604,7 @@ static struct slab *cache_grow_begin(struct kmem_cache *cachep, * page_address() in the latter returns a non-tagged pointer, * as it should be for slab pages. */ - kasan_poison_slab(slab_page(slab)); + kasan_poison_slab(slab); /* Get slab management. */ freelist = alloc_slabmgmt(cachep, slab, offset, |