From: Marco Elver <elver@xxxxxxxxxx>
Subject: kasan: fix build by including kernel.h
The <linux/kasan.h> header relies on _RET_IP_ being defined, and had been
receiving that definition via inclusion of bug.h which includes kernel.h.
However, since f39650de687e ("kernel.h: split out panic and oops helpers")
that is no longer the case and get the following build error when building
CONFIG_KASAN_HW_TAGS on arm64:
In file included from arch/arm64/mm/kasan_init.c:10:
./include/linux/kasan.h: In function 'kasan_slab_free':
./include/linux/kasan.h:230:39: error: '_RET_IP_' undeclared (first use in this function)
230 | return __kasan_slab_free(s, object, _RET_IP_, init);
Fix it by including kernel.h from kasan.h.
Link: https://lkml.kernel.org/r/20210705072716.2125074-1-elver@xxxxxxxxxx
Fixes: f39650de687e ("kernel.h: split out panic and oops helpers")
Signed-off-by: Marco Elver <elver@xxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Reviewed-by: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Peter Collingbourne <pcc@xxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/kasan.h | 1 +
1 file changed, 1 insertion(+)
--- a/include/linux/kasan.h~kasan-fix-build-by-including-kernelh
+++ a/include/linux/kasan.h
@@ -3,6 +3,7 @@
#define _LINUX_KASAN_H
#include <linux/bug.h>
+#include <linux/kernel.h>
#include <linux/static_key.h>
#include <linux/types.h>
_
