[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.864859] 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: [ 17.908074] random: sshd: uninitialized urandom read (32 bytes read) [ 18.350017] random: sshd: uninitialized urandom read (32 bytes read) [ 18.803587] random: sshd: uninitialized urandom read (32 bytes read) [ 18.934779] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.16' (ECDSA) to the list of known hosts. [ 24.793445] random: sshd: uninitialized urandom read (32 bytes read) 2018/08/04 02:23:01 parsed 1 programs [ 26.263442] random: cc1: uninitialized urandom read (8 bytes read) 2018/08/04 02:23:03 executed programs: 0 [ 27.123441] IPVS: Creating netns size=2536 id=1 [ 27.242459] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 27.254195] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 27.297063] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 27.309481] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 27.351752] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 27.362963] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 27.374619] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 27.394850] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 27.868628] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 27.893110] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 27.899299] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 27.906063] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.177513] ------------[ cut here ]------------ [ 28.182296] WARNING: CPU: 1 PID: 0 at net/ipv4/af_inet.c:167 inet_sock_destruct+0x598/0x760 [ 28.190790] Kernel panic - not syncing: panic_on_warn set ... [ 28.190790] [ 28.198143] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.9.117-g8b21e85 #23 [ 28.205136] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.214470] ffff8801db307cc0 ffffffff81eb4be9 ffffffff83c48980 00000000ffffffff [ 28.222479] 0000000000000000 0000000000000001 00000000000000a7 ffff8801db307d80 [ 28.230485] ffffffff81421c85 0000000041b58ab3 ffffffff843bc020 ffffffff81421ac6 [ 28.238472] Call Trace: [ 28.241031] <IRQ> [ 28.243075] [<ffffffff81eb4be9>] dump_stack+0xc1/0x128 [ 28.248435] [<ffffffff81421c85>] panic+0x1bf/0x3bc [ 28.253422] [<ffffffff81421ac6>] ? add_taint.cold.6+0x16/0x16 [ 28.259365] [<ffffffff81421f56>] ? __warn.cold.9+0xa6/0x17f [ 28.265147] [<ffffffff83427628>] ? inet_sock_destruct+0x598/0x760 [ 28.271439] [<ffffffff81421f71>] __warn.cold.9+0xc1/0x17f [ 28.277039] [<ffffffff836c01cf>] ? l2tp_tunnel_closeall+0x2af/0x350 [ 28.283506] [<ffffffff8113683c>] warn_slowpath_null+0x2c/0x40 [ 28.289457] [<ffffffff83427628>] inet_sock_destruct+0x598/0x760 [ 28.295576] [<ffffffff83427090>] ? ipv4_mib_init_net+0x570/0x570 [ 28.301781] [<ffffffff836c0a19>] l2tp_tunnel_destruct+0x339/0x590 [ 28.308083] [<ffffffff836c088a>] ? l2tp_tunnel_destruct+0x1aa/0x590 [ 28.314546] [<ffffffff836c06e0>] ? l2tp_tunnel_del_work+0x470/0x470 [ 28.321021] [<ffffffff83023095>] __sk_destruct+0x55/0x590 [ 28.326630] [<ffffffff8128780e>] rcu_process_callbacks+0x8ae/0x12b0 [ 28.333097] [<ffffffff812878ee>] ? rcu_process_callbacks+0x98e/0x12b0 [ 28.339738] [<ffffffff83023040>] ? sock_set_timeout+0x210/0x210 [ 28.345859] [<ffffffff83a037fb>] __do_softirq+0x20b/0x937 [ 28.351460] [<ffffffff8114b277>] irq_exit+0x147/0x190 [ 28.356720] [<ffffffff83a023e1>] smp_apic_timer_interrupt+0x81/0xa0 [ 28.363187] [<ffffffff839fe570>] apic_timer_interrupt+0xa0/0xb0 [ 28.369311] <EOI> [ 28.371360] [<ffffffff839fb816>] ? native_safe_halt+0x6/0x10 [ 28.377253] [<ffffffff81235c8d>] ? trace_hardirqs_on+0xd/0x10 [ 28.383203] [<ffffffff839fae55>] default_idle+0x55/0x360 [ 28.388718] [<ffffffff8106ae20>] arch_cpu_idle+0x10/0x20 [ 28.394237] [<ffffffff839fbc75>] default_idle_call+0x45/0x60 [ 28.400095] [<ffffffff81223215>] cpu_startup_entry+0x2b5/0x380 [ 28.406151] [<ffffffff81222f60>] ? cpu_in_idle+0x20/0x20 [ 28.411729] [<ffffffff810aefa8>] start_secondary+0x328/0x400 [ 28.417597] [<ffffffff810aec80>] ? set_cpu_sibling_map+0x1300/0x1300 [ 28.424635] Dumping ftrace buffer: [ 28.428173] (ftrace buffer empty) [ 28.431857] Kernel Offset: disabled [ 28.435468] Rebooting in 86400 seconds..