[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 14.124964] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.110677] random: sshd: uninitialized urandom read (32 bytes read) [ 18.340856] random: sshd: uninitialized urandom read (32 bytes read) [ 19.111830] random: sshd: uninitialized urandom read (32 bytes read) [ 32.065802] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.15' (ECDSA) to the list of known hosts. [ 37.517715] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program [ 37.600395] IPVS: Creating netns size=2536 id=1 [ 37.614182] IPVS: Creating netns size=2536 id=2 [ 37.627307] IPVS: Creating netns size=2536 id=3 [ 37.640064] IPVS: Creating netns size=2536 id=4 [ 37.805606] kasan: CONFIG_KASAN_INLINE enabled [ 37.810242] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 37.817664] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 37.823869] Dumping ftrace buffer: [ 37.827377] (ftrace buffer empty) [ 37.831058] Modules linked in: [ 37.834367] CPU: 1 PID: 6 Comm: kworker/u4:0 Not tainted 4.9.98-ga03d0bb #18 [ 37.841523] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.850856] Workqueue: netns cleanup_net [ 37.855004] task: ffff8801d9a38000 task.stack: ffff8801d9a40000 [ 37.861038] RIP: 0010:[] [] addrconf_rt_table+0x127/0x290 [ 37.869877] RSP: 0018:ffff8801d9a47520 EFLAGS: 00010206 [ 37.875294] RAX: dffffc0000000000 RBX: 0000000000000200 RCX: ffff8801d9a38000 [ 37.882533] RDX: 0000000000000056 RSI: 0000000000000004 RDI: 00000000000002b0 [ 37.889773] RBP: ffff8801d9a47550 R08: ffff8801d9a38988 R09: 0000000000000001 [ 37.897014] R10: 0000000000000000 R11: 1ffff1003b34712c R12: 0000000000000000 [ 37.904252] R13: 00000000000000fe R14: ffff8801d9baa200 R15: ffff8801c3b9d810 [ 37.911494] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 37.919690] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.925543] CR2: 00007ffecaadfb74 CR3: 00000001c4a52000 CR4: 00000000001606f0 [ 37.932785] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.940024] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.947263] Stack: [ 37.949382] ffffffff83577d70 ffff8801d9baa200 0000000000000000 ffff8801b6938000 [ 37.957362] ffff8801bf141680 ffff8801c3b9d810 ffff8801d9a47598 ffffffff83578783 [ 37.965333] 0000000000000000 ffff880100000080 ffff8801c3b9d680 ffff8801c3b9d810 [ 37.973307] Call Trace: [ 37.975864] [] ? addrconf_leave_solict+0x90/0x90 [ 37.982241] [] addrconf_get_prefix_route+0x33/0x270 [ 37.988882] [] __ipv6_ifa_notify+0x5d8/0x790 [ 37.994907] [] addrconf_ifdown+0x94f/0x10e0 [ 38.000847] [] ? add_addr+0x180/0x180 [ 38.006270] [] ? __lock_is_held+0xa2/0xf0 [ 38.012039] [] addrconf_notify+0x7f8/0x2160 [ 38.017978] [] ? inet6_ifinfo_notify+0x140/0x140 [ 38.024355] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 38.030644] [] ? ip_vs_dst_event+0x24c/0x650 [ 38.036670] [] ? ip6mr_device_event+0x165/0x1c0 [ 38.042958] [] notifier_call_chain+0xb4/0x1d0 [ 38.049073] [] raw_notifier_call_chain+0x2d/0x40 [ 38.055447] [] call_netdevice_notifiers_info+0x55/0x70 [ 38.062344] [] rollback_registered_many+0x5a4/0x920 [ 38.068979] [] ? free_netdev+0x300/0x300 [ 38.074660] [] ? mark_held_locks+0xc7/0x130 [ 38.080600] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 38.087409] [] unregister_netdevice_many.part.106+0x1b/0x110 [ 38.094824] [] default_device_exit_batch+0x353/0x410 [ 38.101545] [] ? unregister_netdevice_many+0x50/0x50 [ 38.108266] [] ? rtnl_unlock+0xe/0x10 [ 38.113687] [] ? default_device_exit+0x1c4/0x260 [ 38.120060] [] ? finish_wait+0x180/0x180 [ 38.125740] [] ? cfg80211_switch_netns+0x490/0x490 [ 38.132288] [] ? unregister_netdevice_many+0x50/0x50 [ 38.139011] [] ? dev_change_net_namespace+0xb30/0xb30 [ 38.145819] [] ops_exit_list.isra.6+0x105/0x160 [ 38.152107] [] cleanup_net+0x321/0x630 [ 38.157611] [] ? net_drop_ns+0x80/0x80 [ 38.163129] [] ? __lock_is_held+0xa2/0xf0 [ 38.168898] [] process_one_work+0x7e1/0x1500 [ 38.174924] [] ? process_one_work+0x728/0x1500 [ 38.181125] [] ? pwq_dec_nr_in_flight+0x2e0/0x2e0 [ 38.187586] [] worker_thread+0xd6/0x10a0 [ 38.193265] [] kthread+0x26d/0x300 [ 38.198424] [] ? process_one_work+0x1500/0x1500 [ 38.204712] [] ? kthread_park+0xa0/0xa0 [ 38.210307] [] ? kthread_park+0xa0/0xa0 [ 38.215899] [] ? kthread_park+0xa0/0xa0 [ 38.221500] [] ret_from_fork+0x5c/0x70 [ 38.227004] Code: 83 be 01 00 00 00 48 c7 c7 20 ef 6d 84 e8 92 12 cc fd 49 8d bc 24 b0 02 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 34 01 00 00 45 8b bc 24 b0 [ 38.253664] RIP [] addrconf_rt_table+0x127/0x290 [ 38.260157] RSP [ 38.264764] ---[ end trace ef96a94f3ad4cd3a ]--- [ 38.269528] Kernel panic - not syncing: Fatal exception [ 38.275262] Dumping ftrace buffer: [ 38.278775] (ftrace buffer empty) [ 38.282461] Kernel Offset: disabled [ 38.286062] Rebooting in 86400 seconds..