This patch initializes shadow area after it was allocated by arch code. All low memory marked as accessible except shadow area itself. Later free_all_bootmem() will release pages to buddy allocator and these pages will be marked as unaccessible, untill somebody will allocate them. Signed-off-by: Andrey Ryabinin <a.ryabinin@xxxxxxxxxxx> --- init/main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/init/main.c b/init/main.c index bb1aed9..d06a636 100644 --- a/init/main.c +++ b/init/main.c @@ -78,6 +78,7 @@ #include <linux/context_tracking.h> #include <linux/random.h> #include <linux/list.h> +#include <linux/kasan.h> #include <asm/io.h> #include <asm/bugs.h> @@ -549,7 +550,7 @@ asmlinkage __visible void __init start_kernel(void) set_init_arg); jump_label_init(); - + kasan_init_shadow(); /* * These use large bootmem allocations and must precede * kmem_cache_init() -- 1.8.5.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
