linux-kernel - Re: kasan cgroup user-after-free in get_mem_cgroup_from

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Date:   Wed, 21 Jun 2023 10:18:31 +0800
From:   junfei fang <jefexiaomi@...il.com>
To:     Michal Hocko <mhocko@...e.com>
Cc:     andrew.zhu@...iatek.com, colin.peng@...iatek.com,
        wangbiao3@...omi.com, yangjianlong@...omi.com,
        linux-kernel@...r.kernel.org
Subject: Re: kasan cgroup user-after-free in get_mem_cgroup_from_mm

Thank you for your prompt response.

We are using kernel-5.15 in our project and cannot change it.
Do you have any suggestions on how to fix this issue?
We appreciate your help.


Michal Hocko <mhocko@...e.com> 于2023年6月20日周二 14:47写道：
>
> On Tue 20-06-23 10:21:20, jefexiaomi wrote:
> > Hi,
> >
> > We encountered three cases of 'cgroup use-after-free' issues in T SW version \
> > with kernel-5.15.
>
> This is a really old kernel. Can you reproduce with the current Linus
> tree?
> --
> Michal Hocko
> SUSE Labs