linux-kernel - Re: KASAN: slab-out-of-bounds Read in bitmap_port

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Date:   Sat, 14 Mar 2020 06:10:02 -0700
From:   syzbot <syzbot+b96275fd6ad891076ced@...kaller.appspotmail.com>
To:     arvid.brodin@...en.se, coreteam@...filter.org,
        dan.carpenter@...cle.com, davem@...emloft.net,
        florent.fourcot@...irst.fr, fw@...len.de, hdanton@...a.com,
        jeremy@...zel.net, johannes.berg@...el.com,
        kadlec@...ckhole.kfki.hu, kadlec@...filter.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        netfilter-devel@...r.kernel.org, pablo@...filter.org,
        syzkaller-bugs@...glegroups.com, xiyou.wangcong@...il.com
Subject: Re: KASAN: slab-out-of-bounds Read in bitmap_port_destroy

syzbot suspects this bug was fixed by commit:

commit 32c72165dbd0e246e69d16a3ad348a4851afd415
Author: Kadlecsik József <kadlec@...ckhole.kfki.hu>
Date:   Sun Jan 19 21:06:49 2020 +0000

    netfilter: ipset: use bitmap infrastructure completely

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=106f42a9e00000
start commit:   131701c6 Merge tag 'leds-5.5-rc8' of git://git.kernel.org/..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=83c00afca9cf5153
dashboard link: https://syzkaller.appspot.com/bug?extid=b96275fd6ad891076ced
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15fba721e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1339726ee00000

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

#syz fix: netfilter: ipset: use bitmap infrastructure completely

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