Re: [PATCH 0/2] fix the missing underflow in memory operation function
From: Dmitry Vyukov
Date: Mon Oct 14 2019 - 06:37:53 EST
On Mon, Oct 14, 2019 at 12:36 PM Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote:
> On Mon, Oct 14, 2019 at 12:32 PM Walter Wu <walter-zh.wu@xxxxxxxxxxxx> wrote:
> > 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.
> Hi Walter,
> I only received this cover letter, but not the actual patches. I also
> don't see them in the group:
> nor on internet. Have you mailed them? Where are they?
OK, received them just now.
> > https://bugzilla.kernel.org/show_bug.cgi?id=199341
> > https://lore.kernel.org/linux-arm-kernel/20190927034338.15813-1-walter-zh.wu@xxxxxxxxxxxx/
> > 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
> > --
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