From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756725AbbHZI2h (ORCPT ); Wed, 26 Aug 2015 04:28:37 -0400 Received: from e28smtp02.in.ibm.com ([122.248.162.2]:54298 "EHLO e28smtp02.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756586AbbHZI07 (ORCPT ); Wed, 26 Aug 2015 04:26:59 -0400 X-Helo: d28dlp03.in.ibm.com X-MailFrom: aneesh.kumar@linux.vnet.ibm.com X-RcptTo: linux-kernel@vger.kernel.org From: "Aneesh Kumar K.V" 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" Subject: [PATCH V2 04/10] kasan: Don't use kasan shadow pointer in generic functions Date: Wed, 26 Aug 2015 13:56:12 +0530 Message-Id: <1440577578-15813-5-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1440577578-15813-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1440577578-15813-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15082608-0005-0000-0000-0000072C7568 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We can't use generic functions like print_hex_dump to access kasan shadow region. This require us to setup another kasan shadow region for the address passed (kasan shadow address). Most architecture won't be able to do that. Hence remove dumping kasan shadow region dump. If we really want to do this we will have to have a kasan internal implemen tation of print_hex_dump for which we will disable address sanitizer operation. Signed-off-by: Aneesh Kumar K.V --- mm/kasan/report.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/mm/kasan/report.c b/mm/kasan/report.c index d19d01823a68..79fbc5d14bd2 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -170,12 +170,6 @@ static void print_shadow_for_address(const void *addr) snprintf(buffer, sizeof(buffer), (i == 0) ? ">%p: " : " %p: ", kaddr); - kasan_disable_current(); - print_hex_dump(KERN_ERR, buffer, - DUMP_PREFIX_NONE, SHADOW_BYTES_PER_ROW, 1, - shadow_row, SHADOW_BYTES_PER_ROW, 0); - kasan_enable_current(); - if (row_is_guilty(shadow_row, shadow)) pr_err("%*c\n", shadow_pointer_offset(shadow_row, shadow), -- 2.5.0