[RFC/PATCH RESEND -next 02/21] init: main: initialize kasan's shadow area on boot
From: Andrey Ryabinin <hidden>
Date: 2014-07-09 11:45:06
Also in:
linux-kbuild, linux-mm, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
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 <redacted> --- 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()
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1.8.5.5