From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935196AbcA0SZ2 (ORCPT ); Wed, 27 Jan 2016 13:25:28 -0500 Received: from mail-wm0-f48.google.com ([74.125.82.48]:37949 "EHLO mail-wm0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934219AbcA0SZS (ORCPT ); Wed, 27 Jan 2016 13:25:18 -0500 From: Alexander Potapenko To: adech.fo@gmail.com, cl@linux.com, dvyukov@google.com, akpm@linux-foundation.org, ryabinin.a.a@gmail.com, rostedt@goodmis.org Cc: kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v1 0/8] SLAB support for KASAN Date: Wed, 27 Jan 2016 19:25:05 +0100 Message-Id: X-Mailer: git-send-email 2.7.0.rc3.207.g0ac5344 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch set implements SLAB support for KASAN Unlike SLUB, SLAB doesn't store allocation/deallocation stacks for heap objects, therefore we reimplement this feature in mm/kasan/stackdepot.c. The intention is to ultimately switch SLUB to use this implementation as well, which will remove the dependency on SLUB_DEBUG. Also neither SLUB nor SLAB delay the reuse of freed memory chunks, which is necessary for better detection of use-after-free errors. We introduce memory quarantine (mm/kasan/quarantine.c), which allows delayed reuse of deallocated memory. Alexander Potapenko (8): kasan: Change the behavior of kmalloc_large_oob_right test mm, kasan: SLAB support mm, kasan: Added GFP flags to KASAN API arch, ftrace: For KASAN put hard/soft IRQ entries into separate sections mm, kasan: Stackdepot implementation. Enable stackdepot for SLAB kasan: Test fix: Warn if the UAF could not be detected in kmalloc_uaf2 kasan: Changed kmalloc_large_oob_right, added kmalloc_pagealloc_oob_right mm: kasan: Initial memory quarantine implementation Documentation/kasan.txt | 5 +- arch/arm/kernel/vmlinux.lds.S | 1 + arch/arm64/kernel/vmlinux.lds.S | 1 + arch/blackfin/kernel/vmlinux.lds.S | 1 + arch/c6x/kernel/vmlinux.lds.S | 1 + arch/metag/kernel/vmlinux.lds.S | 1 + arch/microblaze/kernel/vmlinux.lds.S | 1 + arch/mips/kernel/vmlinux.lds.S | 1 + arch/nios2/kernel/vmlinux.lds.S | 1 + arch/openrisc/kernel/vmlinux.lds.S | 1 + arch/parisc/kernel/vmlinux.lds.S | 1 + arch/powerpc/kernel/vmlinux.lds.S | 1 + arch/s390/kernel/vmlinux.lds.S | 1 + arch/sh/kernel/vmlinux.lds.S | 1 + arch/sparc/kernel/vmlinux.lds.S | 1 + arch/tile/kernel/vmlinux.lds.S | 1 + arch/x86/kernel/Makefile | 1 + arch/x86/kernel/vmlinux.lds.S | 1 + include/asm-generic/vmlinux.lds.h | 12 +- include/linux/ftrace.h | 31 ++-- include/linux/kasan.h | 63 +++++--- include/linux/slab.h | 6 + include/linux/slab_def.h | 14 ++ include/linux/slub_def.h | 11 ++ kernel/softirq.c | 3 +- lib/Kconfig.kasan | 4 +- lib/test_kasan.c | 66 +++++++- mm/Makefile | 1 + mm/kasan/Makefile | 3 + mm/kasan/kasan.c | 221 +++++++++++++++++++++++++-- mm/kasan/kasan.h | 52 +++++++ mm/kasan/quarantine.c | 284 +++++++++++++++++++++++++++++++++++ mm/kasan/report.c | 68 +++++++-- mm/kasan/stackdepot.c | 236 +++++++++++++++++++++++++++++ mm/mempool.c | 23 +-- mm/page_alloc.c | 2 +- mm/slab.c | 56 ++++++- mm/slab.h | 4 + mm/slab_common.c | 8 +- mm/slub.c | 21 +-- 40 files changed, 1122 insertions(+), 89 deletions(-) create mode 100644 mm/kasan/quarantine.c create mode 100644 mm/kasan/stackdepot.c -- 2.7.0.rc3.207.g0ac5344