diff options
Diffstat (limited to 'mm/kasan/shadow.c')
| -rw-r--r-- | mm/kasan/shadow.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/mm/kasan/shadow.c b/mm/kasan/shadow.c index 5a866f6663fc..b958babc8fed 100644 --- a/mm/kasan/shadow.c +++ b/mm/kasan/shadow.c @@ -475,8 +475,16 @@ void kasan_release_vmalloc(unsigned long start, unsigned long end, } } -void *__kasan_unpoison_vmalloc(const void *start, unsigned long size) +void *__kasan_unpoison_vmalloc(const void *start, unsigned long size, + kasan_vmalloc_flags_t flags) { + /* + * Software KASAN modes unpoison both VM_ALLOC and non-VM_ALLOC + * mappings, so the KASAN_VMALLOC_VM_ALLOC flag is ignored. + * Software KASAN modes can't optimize zeroing memory by combining it + * with setting memory tags, so the KASAN_VMALLOC_INIT flag is ignored. + */ + if (!is_vmalloc_or_module_addr(start)) return (void *)start; |