[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.386075] 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: [ 21.463468] random: sshd: uninitialized urandom read (32 bytes read) [ 21.826589] random: sshd: uninitialized urandom read (32 bytes read) [ 22.465864] random: sshd: uninitialized urandom read (32 bytes read) [ 29.871021] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.50' (ECDSA) to the list of known hosts. [ 35.367138] random: sshd: uninitialized urandom read (32 bytes read) 2018/05/08 12:28:55 parsed 1 programs 2018/05/08 12:28:55 executed programs: 0 [ 35.863408] IPVS: Creating netns size=2536 id=1 [ 35.896791] IPVS: Creating netns size=2536 id=2 [ 35.923629] IPVS: Creating netns size=2536 id=3 [ 35.950812] IPVS: Creating netns size=2536 id=4 [ 36.118696] kasan: CONFIG_KASAN_INLINE enabled [ 36.123317] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.131912] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.138143] Dumping ftrace buffer: [ 36.141657] (ftrace buffer empty) [ 36.145347] Modules linked in: [ 36.148635] CPU: 1 PID: 22 Comm: kworker/u4:1 Not tainted 4.9.98-ga03d0bb #21 [ 36.155881] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.165219] Workqueue: netns cleanup_net [ 36.169379] task: ffff8801d9ae9800 task.stack: ffff8801d9bf0000 [ 36.175419] RIP: 0010:[] [] addrconf_rt_table+0x127/0x290 [ 36.184273] RSP: 0018:ffff8801d9bf7520 EFLAGS: 00010206 [ 36.189701] RAX: dffffc0000000000 RBX: 0000000000000200 RCX: ffff8801d9ae9800 [ 36.196945] RDX: 0000000000000056 RSI: 0000000000000004 RDI: 00000000000002b0 [ 36.204193] RBP: ffff8801d9bf7550 R08: ffff8801d9aea188 R09: 0000000000000001 [ 36.211445] R10: 0000000000000000 R11: 1ffff1003b35d42c R12: 0000000000000000 [ 36.218698] R13: 00000000000000fe R14: ffff8801d4948000 R15: ffff8801ca63fa90 [ 36.225964] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 36.234173] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.240128] CR2: 00007fb3a5515000 CR3: 00000001c6968000 CR4: 00000000001606f0 [ 36.247392] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.254650] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.261900] Stack: [ 36.264030] ffffffff83577d70 ffff8801d4948000 0000000000000000 ffff8801b7f48000 [ 36.272069] ffff8801bf9c0d80 ffff8801ca63fa90 ffff8801d9bf7598 ffffffff83578783 [ 36.280071] 0000000000000000 ffff880100000080 ffff8801ca63f900 ffff8801ca63fa90 [ 36.288053] Call Trace: [ 36.290629] [] ? addrconf_leave_solict+0x90/0x90 [ 36.297038] [] addrconf_get_prefix_route+0x33/0x270 [ 36.303678] [] __ipv6_ifa_notify+0x5d8/0x790 [ 36.309883] [] addrconf_ifdown+0x94f/0x10e0 [ 36.315822] [] ? add_addr+0x180/0x180 [ 36.321250] [] ? __lock_is_held+0xa2/0xf0 [ 36.327031] [] addrconf_notify+0x7f8/0x2160 [ 36.332978] [] ? inet6_ifinfo_notify+0x140/0x140 [ 36.339370] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 36.345669] [] ? ip_vs_dst_event+0x24c/0x650 [ 36.351709] [] ? ip6mr_device_event+0x165/0x1c0 [ 36.358003] [] notifier_call_chain+0xb4/0x1d0 [ 36.364129] [] raw_notifier_call_chain+0x2d/0x40 [ 36.370507] [] call_netdevice_notifiers_info+0x55/0x70 [ 36.377413] [] rollback_registered_many+0x5a4/0x920 [ 36.384190] [] ? free_netdev+0x300/0x300 [ 36.390050] [] ? mark_held_locks+0xc7/0x130 [ 36.395995] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 36.402810] [] unregister_netdevice_many.part.106+0x1b/0x110 [ 36.410228] [] default_device_exit_batch+0x353/0x410 [ 36.416952] [] ? unregister_netdevice_many+0x50/0x50 [ 36.423677] [] ? rtnl_unlock+0xe/0x10 [ 36.429098] [] ? default_device_exit+0x1c4/0x260 [ 36.435476] [] ? finish_wait+0x180/0x180 [ 36.441164] [] ? cfg80211_switch_netns+0x490/0x490 [ 36.447717] [] ? unregister_netdevice_many+0x50/0x50 [ 36.454443] [] ? dev_change_net_namespace+0xb30/0xb30 [ 36.461256] [] ops_exit_list.isra.6+0x105/0x160 [ 36.467549] [] cleanup_net+0x321/0x630 [ 36.473055] [] ? net_drop_ns+0x80/0x80 [ 36.478562] [] ? __lock_is_held+0xa2/0xf0 [ 36.484332] [] process_one_work+0x7e1/0x1500 [ 36.490361] [] ? process_one_work+0x728/0x1500 [ 36.496565] [] ? pwq_dec_nr_in_flight+0x2e0/0x2e0 [ 36.503029] [] worker_thread+0xd6/0x10a0 [ 36.508710] [] kthread+0x26d/0x300 [ 36.513872] [] ? process_one_work+0x1500/0x1500 [ 36.520163] [] ? kthread_park+0xa0/0xa0 [ 36.525760] [] ? kthread_park+0xa0/0xa0 [ 36.531357] [] ? kthread_park+0xa0/0xa0 [ 36.536953] [] ret_from_fork+0x5c/0x70 [ 36.542469] 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 [ 36.542539] RIP [ 36.542545] [] addrconf_rt_table+0x127/0x290 RSP [ 36.547402] ---[ end trace 95195c50e4b0343b ]--- [ 36.547407] Kernel panic - not syncing: Fatal exception [ 36.547918] Dumping ftrace buffer: [ 36.547921] (ftrace buffer empty) [ 36.547923] Kernel Offset: disabled [ 36.593683] Rebooting in 86400 seconds..