linux-kernel - Re: KASAN: slab-out-of-bounds Write in bitmap_ip

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Date:   Fri, 21 Feb 2020 11:05:02 -0800
From:   syzbot <syzbot+24d0577de55b8b8f6975@...kaller.appspotmail.com>
To:     allison@...utok.net, arvid.brodin@...en.se, coreteam@...filter.org,
        davem@...emloft.net, dirk.vandermerwe@...ronome.com, fw@...len.de,
        gregkh@...uxfoundation.org, info@...ux.net,
        jakub.kicinski@...ronome.com, jeremy@...zel.net,
        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, tglx@...utronix.de
Subject: Re: KASAN: slab-out-of-bounds Write in bitmap_ip_del

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=1226da7ee00000
start commit:   d96d875e Merge tag 'fixes_for_v5.5-rc8' of git://git.kerne..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=cf8e288883e40aba
dashboard link: https://syzkaller.appspot.com/bug?extid=24d0577de55b8b8f6975
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14cddd76e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10f459c9e00000

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