syzbot


WARNING in nf_tables_table_destroy
Status: upstream: reported C repro on 2020/01/18 07:47
Reported-by: syzbot+2a3b1b28cad90c608e20@syzkaller.appspotmail.com
Fix commit: eb014de4 netfilter: nf_tables: autoload modules from the abort path
Patched on: [ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce], missing on: [ci-qemu-upstream ci-qemu-upstream-386 ci-upstream-kmsan-gce ci2-upstream-kcsan-gce ci2-upstream-usb]
First crash: 30d, last: 30d

Cause bisection: introduced by (bisect log):

commit ec7470b834fe7b5d7eff11b6677f5d7fdf5e9a91
Author: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Mon Jan 13 17:09:58 2020 +0000

  netfilter: nf_tables: store transaction list locally while requesting module

Crash: WARNING in nf_tables_table_destroy (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log):

commit eb014de4fd418de1a277913cba244e47274fe392
Author: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Tue Jan 21 15:48:03 2020 +0000

  netfilter: nf_tables: autoload modules from the abort path


Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-net-this-kasan-gce 2020/01/18 02:11 net 5a9ef194 3de7aabb .config log report syz C coreteam@netfilter.org, davem@davemloft.net, fw@strlen.de, kadlec@netfilter.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org