linux-kernel - [PATCH 0/2] fix the missing underflow in memory operation function

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Message-ID: <20191014103148.17816-1-walter-zh.wu@mediatek.com>
Date:   Mon, 14 Oct 2019 18:31:48 +0800
From:   Walter Wu <walter-zh.wu@...iatek.com>
To:     Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Matthias Brugger <matthias.bgg@...il.com>
CC:     <kasan-dev@...glegroups.com>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>, <wsd_upstream@...iatek.com>,
        Walter Wu <walter-zh.wu@...iatek.com>
Subject: [PATCH 0/2] fix the missing underflow in memory operation function

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