[....] Starting enhanced syslogd: rsyslogd[ 14.415763] audit: type=1400 audit(1543397208.427:4): avc: denied { syslog } for pid=1926 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.73' (ECDSA) to the list of known hosts. 2018/11/28 09:28:09 parsed 1 programs 2018/11/28 09:28:11 executed programs: 0 2018/11/28 09:28:17 executed programs: 6 syzkaller login: [ 104.293261] kasan: CONFIG_KASAN_INLINE enabled [ 104.297723] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 104.354613] Modules linked in: [ 104.357928] CPU: 1 PID: 2299 Comm: kworker/u4:4 Not tainted 4.4.165+ #15 [ 104.364761] Workqueue: netns cleanup_net [ 104.368932] task: ffff8800b4f0df00 task.stack: ffff8801d18a8000 [ 104.374961] RIP: 0010:[] [] addrconf_rt_table+0x126/0x290 [ 104.383828] RSP: 0018:ffff8801d18af590 EFLAGS: 00010202 [ 104.389262] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000004 [ 104.396508] RDX: 0000000000000067 RSI: 0000000000000004 RDI: 0000000000000338 [ 104.403754] RBP: ffff8801d18af5c0 R08: ffff8800b4f0e7c8 R09: 0000000000000001 [ 104.411002] R10: 0000000000000000 R11: ffffffff831a2db8 R12: 00000000000000fe [ 104.418259] R13: ffff8801d2dc3300 R14: 0000000000000218 R15: ffff8800b834a418 [ 104.425508] FS: 0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 [ 104.433709] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 104.439567] CR2: 00000000025d7b30 CR3: 0000000002e0a000 CR4: 00000000001606b0 [ 104.446816] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 104.454074] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 104.461322] Stack: [ 104.463447] ffffffff825c54a0 ffff8801d2dc3300 0000000000000000 ffff8800b2148000 [ 104.471441] ffff8801d2f27700 ffff8800b834a418 ffff8801d18af608 ffffffff825c5e33 [ 104.479433] 00000000b834a280 ffff880100000080 ffff8800b834a280 ffff8800b834a418 [ 104.487460] Call Trace: [ 104.490026] [] ? addrconf_leave_solict+0x90/0x90 [ 104.496408] [] addrconf_get_prefix_route+0x33/0x270 [ 104.503061] [] __ipv6_ifa_notify+0x5f2/0x760 [ 104.509101] [] addrconf_ifdown+0x5ce/0xbc0 [ 104.514963] [] addrconf_notify+0x8d9/0x1a60 [ 104.520912] [] ? inet6_ifinfo_notify+0x140/0x140 [ 104.527307] [] notifier_call_chain+0xb9/0x1e0 [ 104.533432] [] raw_notifier_call_chain+0x2d/0x40 [ 104.539818] [] call_netdevice_notifiers_info+0x55/0x70 [ 104.546740] [] rollback_registered_many+0x594/0x9a0 [ 104.553409] [] ? netdev_rx_handler_unregister+0x90/0x90 [ 104.560413] [] ? mark_held_locks+0xc7/0x130 [ 104.566375] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 104.573306] [] unregister_netdevice_many+0x45/0x220 [ 104.579960] [] default_device_exit_batch+0x33f/0x3f0 [ 104.586691] [] ? unregister_netdevice_many+0x220/0x220 [ 104.593592] [] ? rtnl_unlock+0xe/0x10 [ 104.599020] [] ? default_device_exit+0x1c4/0x260 [ 104.605402] [] ? abort_exclusive_wait+0x2c0/0x2c0 [ 104.611872] [] ? unregister_netdevice_many+0x220/0x220 [ 104.618777] [] ? dev_change_net_namespace+0xb80/0xb80 [ 104.625599] [] ops_exit_list.isra.0+0x105/0x160 [ 104.631897] [] cleanup_net+0x3f2/0x880 [ 104.637412] [] ? net_drop_ns+0x80/0x80 [ 104.642941] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 104.649685] [] ? debug_object_deactivate+0x214/0x340 [ 104.656424] [] ? check_preemption_disabled+0x3b/0x200 [ 104.663251] [] process_one_work+0x824/0x1730 [ 104.669287] [] ? process_one_work+0x73f/0x1730 [ 104.675518] [] ? cancel_delayed_work_sync+0x20/0x20 [ 104.682162] [] worker_thread+0xd9/0x1060 [ 104.687857] [] ? ___preempt_schedule+0x12/0x14 [ 104.694080] [] kthread+0x268/0x300 [ 104.699247] [] ? process_one_work+0x1730/0x1730 [ 104.705544] [] ? kthread_create_on_node+0x4d0/0x4d0 [ 104.712193] [] ? __schedule+0x7ad/0x1e40 [ 104.717880] [] ? kthread_create_on_node+0x4d0/0x4d0 [ 104.724520] [] ret_from_fork+0x55/0x80 [ 104.730034] [] ? kthread_create_on_node+0x4d0/0x4d0 [ 104.736680] Code: 5c 82 be 01 00 00 00 48 c7 c7 60 72 ea 82 e8 52 e4 c3 fe 48 8d bb 38 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 39 01 00 00 44 8b bb 38 03 [ 104.763840] RIP [] addrconf_rt_table+0x126/0x290 [ 104.770352] RSP [ 104.777639] ---[ end trace 4755062df8ded16d ]--- [ 104.783722] Kernel panic - not syncing: Fatal exception [ 104.789411] Kernel Offset: disabled [ 104.793022] Rebooting in 86400 seconds..