[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.213' (ECDSA) to the list of known hosts. 2020/08/05 19:13:49 fuzzer started 2020/08/05 19:13:49 connecting to host at 10.128.0.105:46381 2020/08/05 19:13:49 checking machine... 2020/08/05 19:13:49 checking revisions... 2020/08/05 19:13:49 testing simple program... syzkaller login: [ 34.306756][ T8737] IPVS: ftp: loaded support on port[0] = 21 2020/08/05 19:13:49 building call list... [ 34.650705][ T260] tipc: TX() has been purged, node left! [ 35.072800][ T260] ------------[ cut here ]------------ [ 35.078466][ T260] WARNING: CPU: 1 PID: 260 at kernel/softirq.c:175 __local_bh_enable_ip+0xdf/0x100 [ 35.087796][ T260] Kernel panic - not syncing: panic_on_warn set ... [ 35.094370][ T260] CPU: 1 PID: 260 Comm: kworker/u4:3 Not tainted 5.8.0-syzkaller #0 [ 35.102383][ T260] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.112431][ T260] Workqueue: netns cleanup_net [ 35.117181][ T260] Call Trace: [ 35.120460][ T260] dump_stack+0x16e/0x25d [ 35.124780][ T260] panic+0x20c/0x69a [ 35.128696][ T260] ? __local_bh_enable_ip+0xdf/0x100 [ 35.133965][ T260] __warn+0x211/0x240 [ 35.137971][ T260] ? __local_bh_enable_ip+0xdf/0x100 [ 35.143240][ T260] report_bug+0x153/0x1d0 [ 35.147630][ T260] handle_bug+0x4d/0x90 [ 35.151776][ T260] exc_invalid_op+0x16/0x70 [ 35.156269][ T260] asm_exc_invalid_op+0x12/0x20 [ 35.161226][ T260] RIP: 0010:__local_bh_enable_ip+0xdf/0x100 [ 35.167127][ T260] Code: 00 00 65 8b 05 ae cd cf 7e 85 c0 75 05 e8 10 ae ce ff 5b 41 5e c3 0f 0b 83 3d 80 f2 2f 07 00 0f 85 49 ff ff ff e9 53 ff ff ff <0f> 0b e9 4c ff ff ff e8 15 00 00 00 eb aa 0f 0b 0f 0b 0f 1f 44 00 [ 35.186857][ T260] RSP: 0018:ffffc90000df7b20 EFLAGS: 00010246 [ 35.193390][ T260] RAX: 0000000000000000 RBX: 0000000000000201 RCX: 000000000000021b [ 35.201360][ T260] RDX: 0000ffff880ba7b0 RSI: 0000000000000201 RDI: ffffffff856fee1f [ 35.209380][ T260] RBP: ffff88812c02ea80 R08: 0000000000000000 R09: 0000ffff880ba7b7 [ 35.217336][ T260] R10: 0000000000000001 R11: 0000000000000000 R12: ffff88811feb7568 [ 35.225293][ T260] R13: ffff88811feb7000 R14: ffffffff856fee1f R15: 0000000000000000 [ 35.233260][ T260] ? rt_flush_dev+0x14f/0x1a0 [ 35.237929][ T260] ? rt_flush_dev+0x14f/0x1a0 [ 35.242600][ T260] ? rt_flush_dev+0x14f/0x1a0 [ 35.247324][ T260] _raw_spin_unlock_bh+0x2c/0x30 [ 35.252253][ T260] rt_flush_dev+0x14f/0x1a0 [ 35.256755][ T260] fib_netdev_event+0x1a3/0x6c0 [ 35.261596][ T260] raw_notifier_call_chain+0x53/0xb0 [ 35.266884][ T260] rollback_registered_many+0x74f/0xce0 [ 35.272414][ T260] ? trace_lock_release+0x31/0xe0 [ 35.277424][ T260] ? __list_del_entry_valid+0x54/0xc0 [ 35.282866][ T260] ? __list_add_valid+0x28/0x90 [ 35.287727][ T260] default_device_exit_batch+0x260/0x3f0 [ 35.293363][ T260] ? wait_woken+0x70/0x70 [ 35.297744][ T260] ? default_device_exit+0x2a0/0x2a0 [ 35.303017][ T260] cleanup_net+0x53c/0x7d0 [ 35.307507][ T260] process_one_work+0x46d/0x920 [ 35.312375][ T260] worker_thread+0x665/0xbe0 [ 35.316978][ T260] ? rcu_lock_release+0x20/0x20 [ 35.321816][ T260] kthread+0x216/0x230 [ 35.325874][ T260] ? rcu_lock_release+0x20/0x20 [ 35.330776][ T260] ? kthread_blkcg+0x80/0x80 [ 35.335353][ T260] ret_from_fork+0x1f/0x30 [ 35.341397][ T260] Kernel Offset: disabled [ 35.345857][ T260] Rebooting in 86400 seconds..