diff options
Diffstat (limited to 'mm/kasan/hw_tags.c')
| -rw-r--r-- | mm/kasan/hw_tags.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/kasan/hw_tags.c b/mm/kasan/hw_tags.c index 06141bbc1e51..2b994092a2d4 100644 --- a/mm/kasan/hw_tags.c +++ b/mm/kasan/hw_tags.c @@ -57,7 +57,12 @@ enum kasan_mode kasan_mode __ro_after_init; EXPORT_SYMBOL_GPL(kasan_mode); /* Whether to enable vmalloc tagging. */ +#ifdef CONFIG_KASAN_VMALLOC DEFINE_STATIC_KEY_TRUE(kasan_flag_vmalloc); +#else +DEFINE_STATIC_KEY_FALSE(kasan_flag_vmalloc); +#endif +EXPORT_SYMBOL_GPL(kasan_flag_vmalloc); #define PAGE_ALLOC_SAMPLE_DEFAULT 1 #define PAGE_ALLOC_SAMPLE_ORDER_DEFAULT 3 @@ -119,6 +124,9 @@ static int __init early_kasan_flag_vmalloc(char *arg) if (!arg) return -EINVAL; + if (!IS_ENABLED(CONFIG_KASAN_VMALLOC)) + return 0; + if (!strcmp(arg, "off")) kasan_arg_vmalloc = KASAN_ARG_VMALLOC_OFF; else if (!strcmp(arg, "on")) |