diff options
| -rw-r--r-- | mm/kasan/kasan.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/mm/kasan/kasan.c b/mm/kasan/kasan.c index 6dc1aa7cefcc..def81104772f 100644 --- a/mm/kasan/kasan.c +++ b/mm/kasan/kasan.c @@ -20,6 +20,7 @@ #include <linux/init.h> #include <linux/kernel.h> #include <linux/memblock.h> +#include <linux/memory.h> #include <linux/mm.h> #include <linux/printk.h> #include <linux/sched.h> @@ -300,3 +301,23 @@ EXPORT_SYMBOL(__asan_storeN_noabort); /* to shut up compiler complaints */ void __asan_handle_no_return(void) {} EXPORT_SYMBOL(__asan_handle_no_return); + +#ifdef CONFIG_MEMORY_HOTPLUG +static int kasan_mem_notifier(struct notifier_block *nb, + unsigned long action, void *data) +{ + return (action == MEM_GOING_ONLINE) ? NOTIFY_BAD : NOTIFY_OK; +} + +static int __init kasan_memhotplug_init(void) +{ + pr_err("WARNING: KASan doesn't support memory hot-add\n"); + pr_err("Memory hot-add will be disabled\n"); + + hotplug_memory_notifier(kasan_mem_notifier, 0); + + return 0; +} + +module_init(kasan_memhotplug_init); +#endif |