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

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Message-ID: <000000000000d747bf059cad63b0@google.com>
Date:   Tue, 21 Jan 2020 13:50:01 -0800
From:   syzbot <syzbot+29125d208b3dae9a7019@...kaller.appspotmail.com>
To:     coreteam@...filter.org, dan.carpenter@...cle.com,
        davem@...emloft.net, fw@...len.de, kadlec@...filter.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        netfilter-devel@...r.kernel.org, pablo@...filter.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: use-after-free Read in __nf_tables_abort

syzbot has bisected this bug to:

commit ec7470b834fe7b5d7eff11b6677f5d7fdf5e9a91
Author: Pablo Neira Ayuso <pablo@...filter.org>
Date:   Mon Jan 13 17:09:58 2020 +0000

    netfilter: nf_tables: store transaction list locally while requesting module

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14890721e00000
start commit:   d96d875e Merge tag 'fixes_for_v5.5-rc8' of git://git.kerne..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=16890721e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=12890721e00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=83c00afca9cf5153
dashboard link: https://syzkaller.appspot.com/bug?extid=29125d208b3dae9a7019
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1203f521e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10a706a5e00000

Reported-by: syzbot+29125d208b3dae9a7019@...kaller.appspotmail.com
Fixes: ec7470b834fe ("netfilter: nf_tables: store transaction list locally while requesting module")

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