[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 22.186388] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.649536] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 27.164829] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 27.764746] random: sshd: uninitialized urandom read (32 bytes read, 60 bits of entropy available) [ 111.963646] random: sshd: uninitialized urandom read (32 bytes read, 89 bits of entropy available) Warning: Permanently added '10.128.0.59' (ECDSA) to the list of known hosts. [ 117.669807] random: sshd: uninitialized urandom read (32 bytes read, 91 bits of entropy available) 2018/08/21 07:08:50 parsed 1 programs [ 119.301729] random: cc1: uninitialized urandom read (8 bytes read, 93 bits of entropy available) 2018/08/21 07:08:52 executed programs: 0 [ 120.810427] IPVS: Creating netns size=2552 id=1 [ 120.883062] IPVS: Creating netns size=2552 id=2 [ 120.930374] IPVS: Creating netns size=2552 id=3 [ 121.001498] IPVS: Creating netns size=2552 id=4 [ 121.056214] IPVS: Creating netns size=2552 id=5 [ 121.143081] IPVS: Creating netns size=2552 id=6 [ 121.286545] IPVS: Creating netns size=2552 id=7 [ 121.381582] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 121.427781] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 121.432488] IPVS: Creating netns size=2552 id=8 [ 121.613040] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 121.681439] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 121.697354] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 121.755711] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 121.798189] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 121.807822] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 121.950556] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 122.004127] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 122.056976] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 122.065600] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 122.093930] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 122.119671] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 122.130613] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 122.138575] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 122.161759] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 122.169369] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 122.286206] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 122.344312] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 122.353341] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 122.382032] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 122.391323] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 122.415891] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 122.485432] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 122.493905] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready INIT: Id "1" respawning too fast: disabled for 5 minutes [ 122.531134] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 122.540418] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes [ 122.568463] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 122.576189] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 122.606166] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready INIT: Id "4" respawning too fast: disabled for 5 minut[ 122.623351] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready es INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: di[ 122.639764] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready sabled for 5 minutes [ 122.651013] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 122.661928] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 122.726850] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 122.735638] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 122.790201] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 122.803153] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 122.837917] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 122.862085] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 122.873340] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 122.885778] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 122.901908] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 122.941890] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 122.952773] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 122.990034] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 123.018882] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 123.059769] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 123.127240] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 123.137684] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 123.186741] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 123.236668] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 123.285441] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 123.313564] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 123.364113] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 123.391023] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 123.455688] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 123.543974] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 123.665414] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 123.923074] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 123.995395] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 124.074644] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 124.139572] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 127.177187] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 127.439612] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 127.692134] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 127.903045] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 127.966014] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 128.005707] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 128.027317] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 128.198053] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 128.280545] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 128.293239] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 128.440909] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 128.714932] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 128.960601] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 129.098555] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 129.199127] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 129.281073] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 2018/08/21 07:09:01 executed programs: 8 [ 130.376892] kasan: CONFIG_KASAN_INLINE enabled [ 130.396978] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 130.431043] Dumping ftrace buffer: [ 130.434610] (ftrace buffer empty) [ 130.438309] Modules linked in: [ 130.441638] CPU: 1 PID: 6670 Comm: syz-executor4 Not tainted 4.4.150-g5541782 #19 [ 130.449244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 130.458589] task: ffff8801cb206000 task.stack: ffff8800afe20000 [ 130.464632] RIP: 0010:[] [] pppol2tp_connect+0x873/0x1910 [ 130.473512] RSP: 0018:ffff8800afe27b50 EFLAGS: 00010202 [ 130.478951] RAX: dffffc0000000000 RBX: ffff8801d4b40880 RCX: 1ffffffff0942cd1 [ 130.486218] RDX: 000000000000003b RSI: ffffffff835acf1b RDI: 00000000000001d8 [ 130.493993] RBP: ffff8800afe27d00 R08: ffff8801cb206928 R09: 0000000000000000 [ 130.501256] R10: 0000000000000001 R11: ffff8801cb206000 R12: ffff8801cc062280 [ 130.508519] R13: ffff8801d4b408b0 R14: 0000000000000000 R15: ffff8801cc062500 [ 130.515781] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f772eb40 [ 130.524006] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 130.529879] CR2: 00007f3cae1f4270 CR3: 00000001cb091000 CR4: 00000000001606f0 [ 130.537142] Stack: [ 130.539281] ffffffff835acebb 0000000300000005 ffff8800afe27c58 ffff880000000000 [ 130.547362] ffff8801d4b40c50 ffff8801d4b40892 1ffff10015fc4f73 ffff8801cc062418 [ 130.555421] ffff8801cc062680 0000000041b58ab3 ffffffff8424e708 ffffffff835ac6c0 [ 130.563481] Call Trace: [ 130.566062] [] ? pppol2tp_connect+0x7fb/0x1910 [ 130.572292] [] ? pppol2tp_recv+0x320/0x320 [ 130.578172] [] ? security_socket_connect+0x8f/0xc0 [ 130.584775] [] SYSC_connect+0x1b8/0x300 [ 130.590404] [] ? SYSC_bind+0x280/0x280 [ 130.595942] [] ? get_unused_fd_flags+0xd0/0xd0 [ 130.602259] [] ? compat_SyS_get_robust_list+0x310/0x310 [ 130.609267] [] ? SyS_socket+0x121/0x1b0 [ 130.614887] [] ? move_addr_to_kernel+0x50/0x50 [ 130.621114] [] SyS_connect+0x24/0x30 [ 130.626472] [] ? SyS_accept+0x30/0x30 [ 130.631925] [] do_fast_syscall_32+0x324/0x8b0 [ 130.638075] [] sysenter_flags_fixed+0xd/0x1a [ 130.644118] Code: fd 80 3d e0 85 45 01 00 0f 84 44 09 00 00 e8 c5 75 da fd 49 8d be d8 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 60 0d 00 00 4d 8b be d8 01 00 00 e8 b7 d4 cc [ 130.672182] RIP [] pppol2tp_connect+0x873/0x1910 [ 130.678712] RSP [ 130.701023] ---[ end trace 90fbf3352fd799e1 ]--- [ 130.709987] Kernel panic - not syncing: Fatal exception [ 130.715664] Dumping ftrace buffer: [ 130.719210] (ftrace buffer empty) [ 130.722897] Kernel Offset: disabled [ 130.726499] Rebooting in 86400 seconds..