syzbot


WARNING in tcp_ack
Status: internal: reported C repro on 2020/01/08 07:01
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: 90d72256 gtp: fix bad unlock balance in gtp_encap_enable_socket
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 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 ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-upstream-kmsan-gce]
First crash: 40d, last: 39d

Cause bisection: introduced by (bisect log):

commit e198987e7dd7d3645a53875151cd6f8fc425b706
Author: Taehee Yoo <ap420073@gmail.com>
Date: Tue Jul 2 15:20:51 2019 +0000

  gtp: fix suspicious RCU usage

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

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-root 2020/01/08 21:14 upstream ae608821 ddc3e859 .config log report syz C andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, kafai@fb.com, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, yhs@fb.com, yoshfuji@linux-ipv6.org
ci-upstream-net-kasan-gce 2020/01/08 07:00 net-next 1ece2fbe 6738e0b3 .config log report syz C andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, kafai@fb.com, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, yhs@fb.com, yoshfuji@linux-ipv6.org
ci-upstream-net-this-kasan-gce 2020/01/08 08:24 net 47240ba0 6738e0b3 .config log report andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, kafai@fb.com, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, yhs@fb.com, yoshfuji@linux-ipv6.org