syzbot


KASAN: use-after-free Read in bitmap_ipmac_ext_cleanup
Status: fixed on 2020/02/22 22:27
Reported-by: syzbot+33fc3ad6fa11675e1a7e@syzkaller.appspotmail.com
Fix commit: 32c72165 netfilter: ipset: use bitmap infrastructure completely
First crash: 247d, last: 246d

Cause bisection: introduced by (bisect log):

commit ff95bf28c23490584b9d75913a520bb7bb1f2ecb
Author: Po-Hsu Lin <po-hsu.lin@canonical.com>
Date: Mon Jul 1 04:40:31 2019 +0000

  selftests/net: skip psock_tpacket test if KALLSYMS was not enabled

Crash: KASAN: use-after-free Write in batadv_iv_ogm_schedule (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log):

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

  netfilter: ipset: use bitmap infrastructure completely


Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-386 2020/01/20 05:58 upstream 8f8972a3 0342f8c7 .config log report syz C coreteam@netfilter.org, davem@davemloft.net, florent.fourcot@wifirst.fr, fw@strlen.de, jeremy@azazel.net, johannes.berg@intel.com, kadlec@netfilter.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org
ci-upstream-net-kasan-gce 2020/01/19 23:40 net-next 7f013ede 0342f8c7 .config log report syz C coreteam@netfilter.org, davem@davemloft.net, florent.fourcot@wifirst.fr, fw@strlen.de, jeremy@azazel.net, johannes.berg@intel.com, kadlec@netfilter.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org