[Devel] [PATCH RHEL7 COMMIT] ms/x86/kasan: Add message about KASAN being initialized

[Konstantin Khorenko]

The commit is pushed to "branch-rh7-3.10.0-229.7.2-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-229.7.2.vz7.6.6
------>
commit 4e8e61be6ec2720f7871f8d6cccc73c8e806dd93
Author: Andrey Ryabinin <aryabinin at odin.com>
Date:   Thu Sep 3 19:27:52 2015 +0400

    ms/x86/kasan: Add message about KASAN being initialized
    
    https://jira.sw.ru/browse/PSBM-26429
    
    From: Andrey Ryabinin <a.ryabinin at samsung.com>
    
    commit 8515522949951d81fe2d06c0a3292f171f2b8ec4 upstream.
    
    Print informational message to tell user that kernel
    runs with KASAN enabled.
    
    Add a "kasan: " prefix to all messages in kasan_init_64.c.
    
    Signed-off-by: Andrey Ryabinin <a.ryabinin at samsung.com>
    Cc: Alexander Popov <alpopov at ptsecurity.com>
    Cc: Alexander Potapenko <glider at google.com>
    Cc: Andrey Konovalov <adech.fo at gmail.com>
    Cc: Borislav Petkov <bp at alien8.de>
    Cc: Dmitry Vyukov <dvyukov at google.com>
    Cc: Linus Torvalds <torvalds at linux-foundation.org>
    Cc: Peter Zijlstra <peterz at infradead.org>
    Cc: Thomas Gleixner <tglx at linutronix.de>
    Link: http://lkml.kernel.org/r/1435828178-10975-6-git-send-email-a.ryabinin@samsung.com
    Signed-off-by: Ingo Molnar <mingo at kernel.org>
    Signed-off-by: Andrey Ryabinin <aryabinin at odin.com>
    
    Signed-off-by: Andrey Ryabinin <aryabinin at odin.com>
---
 arch/x86/mm/kasan_init_64.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/mm/kasan_init_64.c b/arch/x86/mm/kasan_init_64.c
index ef3dea9..f9fb08e 100644
--- a/arch/x86/mm/kasan_init_64.c
+++ b/arch/x86/mm/kasan_init_64.c
@@ -1,3 +1,4 @@
+#define pr_fmt(fmt) "kasan: " fmt
 #include <linux/bootmem.h>
 #include <linux/kasan.h>
 #include <linux/kdebug.h>
@@ -237,4 +238,6 @@ void __init kasan_init(void)
 	load_cr3(init_level4_pgt);
 	__flush_tlb_all();
 	init_task.kasan_depth = 0;
+
+	pr_info("Kernel address sanitizer initialized\n");
 }