linux-kernel - Re: KASAN: use-after-free Read in dump

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Date:   Fri, 22 Jan 2021 09:21:06 -0800
From:   syzbot <syzbot+621fd33c0b53d15ee8de@...kaller.appspotmail.com>
To:     anant.thazhemadam@...il.com, anmol.karan123@...il.com,
        coreteam@...filter.org, davem@...emloft.net, fw@...len.de,
        jhs@...atatu.com, jiri@...nulli.us, kadlec@...filter.org,
        kuba@...nel.org, leandro.maciel.dorileo@...el.com,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        netfilter-devel@...r.kernel.org, pablo@...filter.org,
        subashab@...eaurora.org, syzkaller-bugs@...glegroups.com,
        vedang.patel@...el.com, xiyou.wangcong@...il.com,
        yoshfuji@...ux-ipv6.org
Subject: Re: KASAN: use-after-free Read in dump_schedule

syzbot suspects this issue was fixed by commit:

commit cc00bcaa589914096edef7fb87ca5cee4a166b5c
Author: Subash Abhinov Kasiviswanathan <subashab@...eaurora.org>
Date:   Wed Nov 25 18:27:22 2020 +0000

    netfilter: x_tables: Switch synchronization to RCU

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10879d68d00000
start commit:   59126901 Merge tag 'perf-tools-fixes-for-v5.9-2020-09-03' ..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=3c5f6ce8d5b68299
dashboard link: https://syzkaller.appspot.com/bug?extid=621fd33c0b53d15ee8de
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=152c3af9900000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12213b71900000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: netfilter: x_tables: Switch synchronization to RCU

For information about bisection process see: https://goo.gl/tpsmEJ#bisection