From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,
ryabinin.a.a@gmail.com
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [PATCH V2 06/10] kasan: Allow arch to overrride kasan shadow offsets
Date: Wed, 26 Aug 2015 13:56:14 +0530 [thread overview]
Message-ID: <1440577578-15813-7-git-send-email-aneesh.kumar@linux.vnet.ibm.com> (raw)
In-Reply-To: <1440577578-15813-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
Some archs may want to provide kasan shadow memory as a constant
offset from the address. Such arch even though cannot use inline kasan
support, they can work with outofline kasan support.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
include/linux/kasan.h | 3 +++
mm/kasan/kasan.h | 3 +++
2 files changed, 6 insertions(+)
diff --git a/include/linux/kasan.h b/include/linux/kasan.h
index 5486d777b706..e458ca64cdaf 100644
--- a/include/linux/kasan.h
+++ b/include/linux/kasan.h
@@ -15,11 +15,14 @@ struct vm_struct;
#include <asm/kasan.h>
#include <linux/sched.h>
+#ifndef kasan_mem_to_shadow
static inline void *kasan_mem_to_shadow(const void *addr)
{
return (void *)((unsigned long)addr >> KASAN_SHADOW_SCALE_SHIFT)
+ KASAN_SHADOW_OFFSET;
}
+#define kasan_mem_to_shadow kasan_mem_to_shadow
+#endif
/* Enable reporting bugs after kasan_disable_current() */
static inline void kasan_enable_current(void)
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index deb547d5a916..c0686f2b1224 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -57,11 +57,14 @@ struct kasan_global {
void kasan_report_error(struct kasan_access_info *info);
void kasan_report_user_access(struct kasan_access_info *info);
+#ifndef kasan_shadow_to_mem
static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
{
return (void *)(((unsigned long)shadow_addr - KASAN_SHADOW_OFFSET)
<< KASAN_SHADOW_SCALE_SHIFT);
}
+#define kasan_shadow_to_mem kasan_shadow_to_mem
+#endif
static inline bool kasan_report_enabled(void)
{
--
2.5.0
next prev parent reply other threads:[~2015-08-26 8:26 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-26 8:26 [PATCH V2 00/10] KASan ppc64 support Aneesh Kumar K.V
2015-08-26 8:26 ` [PATCH V2 01/10] powerpc/mm: Add virt_to_pfn and use this instead of opencoding Aneesh Kumar K.V
2015-08-26 8:26 ` [PATCH V2 02/10] kasan: MODULE_VADDR is not available on all archs Aneesh Kumar K.V
2015-08-26 17:00 ` Andrey Ryabinin
2015-08-30 12:33 ` Aneesh Kumar K.V
2015-08-26 8:26 ` [PATCH V2 03/10] kasan: Rename kasan_enabled to kasan_report_enabled Aneesh Kumar K.V
2015-08-26 17:02 ` Andrey Ryabinin
2015-08-26 8:26 ` [PATCH V2 04/10] kasan: Don't use kasan shadow pointer in generic functions Aneesh Kumar K.V
2015-08-26 8:54 ` Aneesh Kumar K.V
2015-08-27 9:42 ` Andrey Ryabinin
2015-08-26 8:26 ` [PATCH V2 05/10] kasan: Enable arch to hook into kasan callbacks Aneesh Kumar K.V
2015-08-27 9:46 ` Andrey Ryabinin
2015-08-30 12:41 ` Aneesh Kumar K.V
2015-08-26 8:26 ` Aneesh Kumar K.V [this message]
2015-08-27 9:48 ` [PATCH V2 06/10] kasan: Allow arch to overrride kasan shadow offsets Andrey Ryabinin
2015-08-26 8:26 ` [PATCH V2 07/10] kasan: Make INLINE KASan support arch selectable Aneesh Kumar K.V
2015-08-27 11:55 ` Andrey Ryabinin
2015-08-30 12:50 ` Aneesh Kumar K.V
2015-08-26 8:26 ` [PATCH V2 08/10] kasan: Update feature support file Aneesh Kumar K.V
2015-08-26 8:26 ` [PATCH V2 09/10] kasan: Prevent deadlock in kasan reporting Aneesh Kumar K.V
2015-08-27 12:08 ` Andrey Ryabinin
2015-08-30 12:53 ` Aneesh Kumar K.V
2015-08-26 8:26 ` [PATCH V2 10/10] powerpc/mm: kasan: Add kasan support for ppc64 Aneesh Kumar K.V
2015-08-27 12:16 ` Andrey Ryabinin
2015-08-26 16:37 ` [PATCH V2 00/10] KASan ppc64 support Andrey Ryabinin
2015-08-26 17:14 ` Aneesh Kumar K.V
2018-07-05 16:33 ` Christophe LEROY
2018-07-06 14:11 ` Aneesh Kumar K.V
2018-07-06 14:13 ` Christophe LEROY
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1440577578-15813-7-git-send-email-aneesh.kumar@linux.vnet.ibm.com \
--to=aneesh.kumar@linux.vnet.ibm.com \
--cc=benh@kernel.crashing.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mpe@ellerman.id.au \
--cc=paulus@samba.org \
--cc=ryabinin.a.a@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).