[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 13.426701] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.860188] random: sshd: uninitialized urandom read (32 bytes read) [ 27.262370] random: sshd: uninitialized urandom read (32 bytes read) [ 27.805008] random: sshd: uninitialized urandom read (32 bytes read) [ 85.207601] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.59' (ECDSA) to the list of known hosts. [ 90.775667] random: sshd: uninitialized urandom read (32 bytes read) 2018/08/29 10:03:47 parsed 1 programs [ 92.412904] random: cc1: uninitialized urandom read (8 bytes read) 2018/08/29 10:03:50 executed programs: 0 [ 93.742619] IPVS: Creating netns size=2536 id=1 [ 93.765536] IPVS: Creating netns size=2536 id=2 [ 93.802833] IPVS: Creating netns size=2536 id=3 [ 93.845087] IPVS: Creating netns size=2536 id=4 [ 93.871287] IPVS: Creating netns size=2536 id=5 [ 93.929282] IPVS: Creating netns size=2536 id=6 [ 93.982970] IPVS: Creating netns size=2536 id=7 [ 94.034558] IPVS: Creating netns size=2536 id=8 [ 94.172697] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 94.207431] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 94.259328] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 94.284434] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 94.340118] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 94.367018] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 94.391338] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 94.402520] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 94.423577] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 94.433238] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 94.447622] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 94.470027] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 94.505753] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 94.529160] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 94.537293] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 94.551843] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 94.563699] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 94.577786] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 94.587003] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 94.602149] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 94.609549] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 94.625849] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 94.636772] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 94.666057] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 94.674609] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 94.683208] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 94.696081] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 94.711421] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 94.741624] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 94.753337] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 94.762649] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 94.773987] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 94.784511] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 94.793687] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 94.800974] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 94.809667] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 94.817493] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 94.830435] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 94.851177] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 94.861147] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 94.872300] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 94.887191] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 94.906527] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 94.916337] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 94.927599] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 94.940141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 94.960305] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 94.993126] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 95.000758] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 95.010309] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 95.017953] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 95.031546] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 95.042744] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 95.058594] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 95.065454] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 95.073900] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 95.083288] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 95.092645] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 95.100044] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 95.107306] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 95.116407] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 95.124387] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 95.134082] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 95.141802] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 95.152597] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 95.160878] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 95.169595] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 95.180116] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 95.188128] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 95.199967] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 95.207705] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 95.218646] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 95.226026] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 95.236052] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 95.243091] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 95.250613] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 95.259087] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 95.268400] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 95.280301] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 95.287777] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 95.299628] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 95.307009] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 97.565742] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 97.722446] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 97.740031] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 97.746837] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 97.792390] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 97.853230] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 97.868924] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 97.881767] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 97.948262] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 97.956912] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 97.967832] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 98.022972] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 98.034268] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 98.042106] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 98.048435] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 98.055057] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 98.062605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 98.069357] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 98.075960] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 98.082800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 98.184913] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 98.246364] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 98.325611] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 98.336357] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 98.345204] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 98.361741] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 98.383885] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 98.393031] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 98.401862] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 98.531127] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 98.538517] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 98.545248] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 2018/08/29 10:03:55 executed programs: 8 [ 100.819073] BUG: unable to handle kernel NULL pointer dereference at 0000000000000080 [ 100.827368] IP: [] l2tp_session_create+0xc60/0x16f0 [ 100.834079] PGD 1bb7d8067 [ 100.836737] PUD 1c24b2067 PMD 0 [ 100.840261] [ 100.841920] Oops: 0002 [#1] PREEMPT SMP KASAN [ 100.846401] Dumping ftrace buffer: [ 100.849932] (ftrace buffer empty) [ 100.853629] Modules linked in: [ 100.856935] CPU: 1 PID: 7519 Comm: syz-executor7 Not tainted 4.9.124-g09eb2ba #35 [ 100.864538] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.873871] task: ffff8801da344800 task.stack: ffff8801d4e30000 [ 100.879903] RIP: 0010:[] [] l2tp_session_create+0xc60/0x16f0 [ 100.889036] RSP: 0018:ffff8801d4e37ab0 EFLAGS: 00010246 [ 100.894463] RAX: 0000000000000000 RBX: ffff8801b5440000 RCX: 1ffff1003b468a1d [ 100.901717] RDX: 1ffff10038f0c120 RSI: ffff8801da3450c8 RDI: ffff8801c7860900 [ 100.908994] RBP: ffff8801d4e37b50 R08: ffff8801da3450e8 R09: 0000000000000000 [ 100.916255] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801c78607d8 [ 100.923500] R13: 0000000000000000 R14: ffff8801c7860780 R15: 0000000000000000 [ 100.930754] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f777cb40 [ 100.938964] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 100.944822] CR2: 0000000000000080 CR3: 00000001bd8d3000 CR4: 00000000001606f0 [ 100.952088] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 100.959336] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 100.966583] Stack: [ 100.968706] ffffffff836c8e27 ffffffff836c9ec1 ffff8801d41ecc48 0000000000000000 [ 100.976704] ffff8801c7860780 ffff8801b5440158 ffff8801c78607d8 ffff8801b5440150 [ 100.984715] ffff8801b54400b0 ffff8801c78607a0 ffff8801d41ec400 0000000000000000 [ 100.992746] Call Trace: [ 100.995311] [] ? l2tp_session_create+0xed7/0x16f0 [ 101.001796] [] ? l2tp_session_get+0x1d1/0x790 [ 101.008152] [] pppol2tp_connect+0x10d7/0x18f0 [ 101.014280] [] ? pppol2tp_seq_show+0xc30/0xc30 [ 101.020501] [] ? security_socket_connect+0x8f/0xc0 [ 101.027057] [] SYSC_connect+0x1b8/0x300 [ 101.032656] [] ? SYSC_bind+0x280/0x280 [ 101.038170] [] ? get_unused_fd_flags+0xd0/0xd0 [ 101.044380] [] ? compat_SyS_get_robust_list+0x310/0x310 [ 101.051368] [] ? SyS_socket+0x121/0x1b0 [ 101.056986] [] ? move_addr_to_kernel+0x50/0x50 [ 101.063230] [] ? task_work_run+0x14a/0x180 [ 101.069095] [] SyS_connect+0x24/0x30 [ 101.074457] [] ? SyS_accept+0x30/0x30 [ 101.079885] [] do_fast_syscall_32+0x2f7/0x870 [ 101.086004] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 101.092648] [] entry_SYSENTER_compat+0x90/0xa2 [ 101.098849] Code: 00 00 49 8d be 80 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 7b 09 00 00 49 8b 86 80 01 00 00 ff 80 80 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 55 d0 [ 101.126009] RIP [] l2tp_session_create+0xc60/0x16f0 [ 101.132832] RSP [ 101.136458] CR2: 0000000000000080 [ 101.148094] ---[ end trace f0cd37d3d089dedf ]--- [ 101.169517] Kernel panic - not syncing: Fatal exception [ 101.175209] Dumping ftrace buffer: [ 101.178725] (ftrace buffer empty) [ 101.182409] Kernel Offset: disabled [ 101.186005] Rebooting in 86400 seconds..