From: Walter Wu <walter-zh.wu@mediatek.com>
To: Andrey Ryabinin <aryabinin@virtuozzo.com>,
Alexander Potapenko <glider@google.com>,
Dmitry Vyukov <dvyukov@google.com>,
Matthias Brugger <matthias.bgg@gmail.com>
Cc: <kasan-dev@googlegroups.com>, <linux-mm@kvack.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>, <wsd_upstream@mediatek.com>,
Walter Wu <walter-zh.wu@mediatek.com>
Subject: [PATCH 0/2] fix the missing underflow in memory operation function
Date: Mon, 14 Oct 2019 18:31:48 +0800 [thread overview]
Message-ID: <20191014103148.17816-1-walter-zh.wu@mediatek.com> (raw)
The patchsets help to produce KASAN report when size is negative numbers
in memory operation function. It is helpful for programmer to solve the
undefined behavior issue. Patch 1 based on Dmitry's review and
suggestion, patch 2 is a test in order to verify the patch 1.
[1]https://bugzilla.kernel.org/show_bug.cgi?id=199341
[2]https://lore.kernel.org/linux-arm-kernel/20190927034338.15813-1-walter-zh.wu@mediatek.com/
Walter Wu (2):
kasan: detect negative size in memory operation function
kasan: add test for invalid size in memmove
---
lib/test_kasan.c | 18 ++++++++++++++++++
mm/kasan/common.c | 13 ++++++++-----
mm/kasan/generic.c | 5 +++++
mm/kasan/generic_report.c | 18 ++++++++++++++++++
mm/kasan/tags.c | 5 +++++
mm/kasan/tags_report.c | 17 +++++++++++++++++
6 files changed, 71 insertions(+), 5 deletions(-)
--
2.18.0
next reply other threads:[~2019-10-14 10:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-14 10:31 Walter Wu [this message]
2019-10-14 10:36 ` [PATCH 0/2] fix the missing underflow in memory operation function Dmitry Vyukov
2019-10-14 10:37 ` Dmitry Vyukov
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