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

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Message-ID: <000000000000e39e1b05a1755045@google.com>
Date:   Sun, 22 Mar 2020 11:02:03 -0700
From:   syzbot <syzbot+f3e96783d74ee8ea9aa3@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, allison@...utok.net,
        aryabinin@...tuozzo.com, coreteam@...filter.org,
        davem@...emloft.net, elver@...gle.com, fw@...len.de,
        gregkh@...uxfoundation.org, info@...ux.net, jeremy@...zel.net,
        kadlec@...ckhole.kfki.hu, kadlec@...filter.org,
        kstewart@...uxfoundation.org, linux-kernel@...r.kernel.org,
        mark.rutland@....com, netdev@...r.kernel.org,
        netfilter-devel@...r.kernel.org, pablo@...filter.org,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de,
        torvalds@...ux-foundation.org
Subject: Re: KASAN: slab-out-of-bounds Read in bitmap_ip_add

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=13c6cb73e00000
start commit:   244dc268 Merge tag 'drm-fixes-2020-01-19' of git://anongit..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=d9290aeb7e6cf1c4
dashboard link: https://syzkaller.appspot.com/bug?extid=f3e96783d74ee8ea9aa3
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1104c495e00000

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