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

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Message-ID: <00000000000080d06405a0de4277@google.com>
Date:   Sat, 14 Mar 2020 22:49:02 -0700
From:   syzbot <syzbot+7b6206fb525c1f5ec3f8@...kaller.appspotmail.com>
To:     a@...table.cc, andrew@...n.ch, b.a.t.m.a.n@...ts.open-mesh.org,
        coreteam@...filter.org, davem@...emloft.net,
        florent.fourcot@...irst.fr, fw@...len.de, grygorii.strashko@...com,
        j-keerthy@...com, jeremy@...zel.net, johannes.berg@...el.com,
        kadlec@...ckhole.kfki.hu, kadlec@...filter.org,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
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        netfilter-devel@...r.kernel.org, pablo@...filter.org,
        sw@...onwunderlich.de, syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: slab-out-of-bounds Read in bitmap_port_ext_cleanup

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=122e7c1de00000
start commit:   d5d359b0 Merge branch 'for-linus' of git://git.kernel.org/..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=cf8e288883e40aba
dashboard link: https://syzkaller.appspot.com/bug?extid=7b6206fb525c1f5ec3f8
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15909f21e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=141a1611e00000

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