[PATCH] kasan: include <linux/instruction_pointer.h> for _RET_IP_

[Tao Cui]

From: Tao Cui <cuitao@xxxxxxxxxx>

kasan.h uses _RET_IP_ but relied on <linux/trace_printk.h>, included via
<linux/kernel.h>, to provide it. Commit 9cbc3d9806d3 ("tracing: Remove
trace_printk.h from kernel.h") dropped that transitive include, so files
that don't otherwise get instruction_pointer.h no longer build, e.g.
kernel/scs.c on arm64 KASAN:

  include/linux/kasan.h:199:43: error: use of undeclared identifier '_RET_IP_'

Include <linux/instruction_pointer.h> directly to make the dependency
explicit.

Fixes: 9cbc3d9806d3 ("tracing: Remove trace_printk.h from kernel.h")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202606301759.hTqHaPuI-lkp@xxxxxxxxx/
Signed-off-by: Tao Cui <cuitao@xxxxxxxxxx>
---
 include/linux/kasan.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/kasan.h b/include/linux/kasan.h
index bf233bde68c7..d5159c8033e8 100644
--- a/include/linux/kasan.h
+++ b/include/linux/kasan.h
@@ -3,6 +3,7 @@
 #define _LINUX_KASAN_H
 
 #include <linux/bug.h>
+#include <linux/instruction_pointer.h>
 #include <linux/kasan-enabled.h>
 #include <linux/kasan-tags.h>
 #include <linux/kernel.h>
-- 
2.43.0