diff mbox

[v2,2/6] arm64: ptdump: add region marker for kasan shadow region

Message ID 1461343688-8552-3-git-send-email-ard.biesheuvel@linaro.org
State Accepted
Commit d8fc68a04d2ffa7327a5fd89d4cd9f2fe24659d3
Headers show

Commit Message

Ard Biesheuvel April 22, 2016, 4:48 p.m. UTC
Annotate the KASAN shadow region with boundary markers, so that its
mappings stand out in the page table dumper output.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

---
 arch/arm64/mm/dump.c | 5 +++++
 1 file changed, 5 insertions(+)

-- 
2.7.4


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Comments

Mark Rutland April 22, 2016, 5:09 p.m. UTC | #1
On Fri, Apr 22, 2016 at 06:48:04PM +0200, Ard Biesheuvel wrote:
> Annotate the KASAN shadow region with boundary markers, so that its

> mappings stand out in the page table dumper output.

> 

> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>


Acked-by: Mark Rutland <mark.rutland@arm.com>


Mark.

> ---

>  arch/arm64/mm/dump.c | 5 +++++

>  1 file changed, 5 insertions(+)

> 

> diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c

> index 493461159462..8404190fe2bd 100644

> --- a/arch/arm64/mm/dump.c

> +++ b/arch/arm64/mm/dump.c

> @@ -23,6 +23,7 @@

>  #include <linux/seq_file.h>

>  

>  #include <asm/fixmap.h>

> +#include <asm/kasan.h>

>  #include <asm/memory.h>

>  #include <asm/pgtable.h>

>  #include <asm/pgtable-hwdef.h>

> @@ -33,6 +34,10 @@ struct addr_marker {

>  };

>  

>  static const struct addr_marker address_markers[] = {

> +#ifdef CONFIG_KASAN

> +	{ KASAN_SHADOW_START,		"Kasan shadow start" },

> +	{ KASAN_SHADOW_END,		"Kasan shadow end" },

> +#endif

>  	{ MODULES_VADDR,		"Modules start" },

>  	{ MODULES_END,			"Modules end" },

>  	{ VMALLOC_START,		"vmalloc() Area" },

> -- 

> 2.7.4

> 


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diff mbox

Patch

diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c
index 493461159462..8404190fe2bd 100644
--- a/arch/arm64/mm/dump.c
+++ b/arch/arm64/mm/dump.c
@@ -23,6 +23,7 @@ 
 #include <linux/seq_file.h>
 
 #include <asm/fixmap.h>
+#include <asm/kasan.h>
 #include <asm/memory.h>
 #include <asm/pgtable.h>
 #include <asm/pgtable-hwdef.h>
@@ -33,6 +34,10 @@  struct addr_marker {
 };
 
 static const struct addr_marker address_markers[] = {
+#ifdef CONFIG_KASAN
+	{ KASAN_SHADOW_START,		"Kasan shadow start" },
+	{ KASAN_SHADOW_END,		"Kasan shadow end" },
+#endif
 	{ MODULES_VADDR,		"Modules start" },
 	{ MODULES_END,			"Modules end" },
 	{ VMALLOC_START,		"vmalloc() Area" },