[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 20.733860] 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: [ 26.960651] random: sshd: uninitialized urandom read (32 bytes read, 40 bits of entropy available) [ 27.282530] random: sshd: uninitialized urandom read (32 bytes read, 40 bits of entropy available) [ 28.044226] random: sshd: uninitialized urandom read (32 bytes read, 74 bits of entropy available) [ 102.673398] random: sshd: uninitialized urandom read (32 bytes read, 101 bits of entropy available) Warning: Permanently added '10.128.10.38' (ECDSA) to the list of known hosts. [ 108.105204] random: sshd: uninitialized urandom read (32 bytes read, 105 bits of entropy available) 2018/08/15 06:17:19 parsed 1 programs [ 109.073890] random: cc1: uninitialized urandom read (8 bytes read, 105 bits of entropy available) 2018/08/15 06:17:20 executed programs: 0 [ 110.185321] IPVS: Creating netns size=2552 id=1 [ 110.241566] IPVS: Creating netns size=2552 id=2 [ 110.291498] IPVS: Creating netns size=2552 id=3 [ 110.367472] IPVS: Creating netns size=2552 id=4 [ 110.437540] IPVS: Creating netns size=2552 id=5 [ 110.516651] IPVS: Creating netns size=2552 id=6 [ 110.626568] IPVS: Creating netns size=2552 id=7 [ 110.689818] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 110.724274] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 110.777992] IPVS: Creating netns size=2552 id=8 [ 110.920780] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 110.960617] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 110.990993] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 111.037036] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 111.094201] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 111.160657] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 111.252411] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 111.362581] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 111.394052] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 111.401593] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 111.431154] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 111.454116] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 111.468881] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 111.486020] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 111.546480] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 111.570355] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 111.616396] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 111.699272] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 111.712357] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 111.729954] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 111.772651] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 111.800019] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 111.834222] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 111.847790] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 111.973939] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 111.987143] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 111.999178] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 112.043118] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 112.136451] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 112.149620] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 112.165891] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 112.258579] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 112.267666] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 112.283308] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 112.352341] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 112.365220] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 112.430044] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 112.450246] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 112.464557] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 112.521762] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 112.591839] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 112.682114] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 112.690263] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 112.728767] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 112.746356] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 112.838544] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 112.849359] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 112.926334] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 112.942235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 112.972510] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 112.995448] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 113.064471] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 113.150131] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 113.177099] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 113.204932] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 113.220913] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 113.321953] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 113.375743] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 113.401923] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 113.482279] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 113.562558] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 113.602310] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 116.802736] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 117.081839] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 117.290556] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 117.421465] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 117.549889] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 117.686107] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 117.864307] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 117.884131] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 118.057046] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 118.138869] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 118.178235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 118.263060] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 118.397088] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 118.556428] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 118.612467] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 118.824564] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 2018/08/15 06:17:29 executed programs: 8 INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes [ 122.008456] BUG: unable to handle kernel NULL pointer dereference at 0000000000000080 [ 122.016893] IP: [] l2tp_session_create+0x948/0x1030 [ 122.023636] PGD 1c7583067 PUD 1d27dd067 PMD 0 [ 122.028747] Oops: 0002 [#1] PREEMPT SMP KASAN [ 122.033762] Dumping ftrace buffer: [ 122.037286] (ftrace buffer empty) [ 122.040983] Modules linked in: [ 122.044292] CPU: 0 PID: 7149 Comm: syz-executor2 Not tainted 4.4.147-ga5fc665 #80 [ 122.051899] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 122.061254] task: ffff8800ada81800 task.stack: ffff8800ad7e8000 [ 122.067296] RIP: 0010:[] [] l2tp_session_create+0x948/0x1030 [ 122.076429] RSP: 0018:ffff8800ad7efb48 EFLAGS: 00010246 [ 122.081869] RAX: 0000000000000000 RBX: ffff8801d1f3e780 RCX: 0000000000000000 [ 122.089129] RDX: 1ffff1003a3e7d20 RSI: ffffffff835a1033 RDI: ffff8801d1f3e900 [ 122.096384] RBP: ffff8800ad7efbb8 R08: ffff8800ada82100 R09: 0000000000000000 [ 122.103639] R10: 0000000000000000 R11: ffffffff8463a1e0 R12: ffff8801cb23c328 [ 122.111015] R13: ffff8800ad7efcd0 R14: ffff8801cb23c280 R15: ffffffff835a0b10 [ 122.118402] FS: 00007f7d4420b700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 122.126613] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 122.132592] CR2: 0000000000000080 CR3: 00000001cc08f000 CR4: 00000000001606f0 [ 122.139916] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 122.147242] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 122.154499] Stack: [ 122.156635] ffffffff8113fc2a ffff8801d1f3e7a0 ffff8801cb23c3d8 ffff8801cb23c290 [ 122.164715] ffffffff838c85b0 ffff8801cb23c330 ffff8801cb23c3d0 ffff8801d1f3e860 [ 122.172814] ffffffff00000000 ffff8801d9138000 0000000000000000 ffff8801d9138030 [ 122.180875] Call Trace: [ 122.183454] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 122.189763] [] ? _raw_read_unlock_bh+0x30/0x40 [ 122.196006] [] pppol2tp_connect+0x10f0/0x1910 [ 122.202139] [] ? pppol2tp_recv+0x320/0x320 [ 122.208016] [] ? security_socket_connect+0x8f/0xc0 [ 122.214584] [] SYSC_connect+0x1b8/0x300 [ 122.220199] [] ? SYSC_bind+0x280/0x280 [ 122.225729] [] ? get_unused_fd_flags+0xd0/0xd0 [ 122.231954] [] ? do_futex+0x17f0/0x17f0 [ 122.237579] [] ? SyS_socket+0x121/0x1b0 [ 122.243193] [] ? move_addr_to_kernel+0x50/0x50 [ 122.249422] [] SyS_connect+0x24/0x30 [ 122.254777] [] entry_SYSCALL_64_fastpath+0x22/0x9e [ 122.261337] Code: 00 00 48 8d bb 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 36 06 00 00 48 8b 83 80 01 00 00 ff 80 80 00 00 00 48 8d 43 20 48 89 c7 48 89 45 b0 e8 f1 13 [ 122.289236] RIP [] l2tp_session_create+0x948/0x1030 [ 122.296023] RSP [ 122.299634] CR2: 0000000000000080 [ 122.303941] ---[ end trace 1bf7812e4ed33c62 ]--- [ 122.308811] Kernel panic - not syncing: Fatal exception [ 122.314659] Dumping ftrace buffer: [ 122.318222] (ftrace buffer empty) [ 122.321915] Kernel Offset: disabled [ 122.325526] Rebooting in 86400 seconds..