[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 19.759670] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.524278] random: sshd: uninitialized urandom read (32 bytes read) [ 23.938684] random: sshd: uninitialized urandom read (32 bytes read) [ 24.802496] random: sshd: uninitialized urandom read (32 bytes read) [ 24.954616] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.54' (ECDSA) to the list of known hosts. [ 30.406276] random: sshd: uninitialized urandom read (32 bytes read) 2018/07/13 09:04:01 parsed 1 programs [ 32.223730] random: cc1: uninitialized urandom read (8 bytes read) 2018/07/13 09:04:04 executed programs: 0 [ 33.402919] IPVS: ftp: loaded support on port[0] = 21 [ 33.612086] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.618550] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.625890] device bridge_slave_0 entered promiscuous mode [ 33.642212] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.648588] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.655777] device bridge_slave_1 entered promiscuous mode [ 33.671151] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 33.686776] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 33.727907] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 33.747577] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 33.810297] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 33.817551] team0: Port device team_slave_0 added [ 33.832358] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 33.839473] team0: Port device team_slave_1 added [ 33.854503] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 33.871297] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 33.888482] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 33.905339] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 34.021457] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.027933] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.035195] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.041567] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.463118] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 34.470491] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.514907] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 34.560146] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 34.568522] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 34.607549] 8021q: adding VLAN 0 to HW filter on device team0 [ 34.864305] WARNING: CPU: 1 PID: 4810 at include/net/sock.h:644 smc_unhash_sk+0x357/0x4b0 [ 34.872774] Kernel panic - not syncing: panic_on_warn set ... [ 34.872774] [ 34.880182] CPU: 1 PID: 4810 Comm: syz-executor0 Not tainted 4.18.0-rc4+ #47 [ 34.887380] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.896729] Call Trace: [ 34.899317] dump_stack+0x1c9/0x2b4 [ 34.902942] ? dump_stack_print_info.cold.2+0x52/0x52 [ 34.908141] panic+0x238/0x4e7 [ 34.911342] ? add_taint.cold.5+0x16/0x16 [ 34.915513] ? __warn.cold.8+0x148/0x1ba [ 34.919575] ? __warn.cold.8+0x117/0x1ba [ 34.923671] ? smc_unhash_sk+0x357/0x4b0 [ 34.927730] __warn.cold.8+0x163/0x1ba [ 34.931616] ? smc_unhash_sk+0x357/0x4b0 [ 34.935672] report_bug+0x252/0x2d0 [ 34.939304] do_error_trap+0x1fc/0x4d0 [ 34.943192] ? graph_lock+0x170/0x170 [ 34.946987] ? math_error+0x3e0/0x3e0 [ 34.950783] ? lock_acquire+0x1e4/0x540 [ 34.954765] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.959603] do_invalid_op+0x1b/0x20 [ 34.963318] invalid_op+0x14/0x20 [ 34.966796] RIP: 0010:smc_unhash_sk+0x357/0x4b0 [ 34.971459] Code: 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 88 00 00 00 48 81 c4 c0 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 e9 52 1a fa <0f> 0b e9 47 ff ff ff 4c 89 ff 48 89 85 28 ff ff ff e8 03 2d 58 fa [ 34.990657] RSP: 0018:ffff8801d447f9f8 EFLAGS: 00010293 [ 34.996034] RAX: ffff8801cf6205c0 RBX: ffff8801cff4b0c0 RCX: ffffffff8761b7f6 [ 35.003329] RDX: 0000000000000000 RSI: ffffffff8761b8b7 RDI: 0000000000000005 [ 35.010606] RBP: ffff8801d447fae0 R08: ffff8801cf6205c0 R09: ffffed0039fe9628 [ 35.017875] R10: ffffed0039fe9628 R11: ffff8801cff4b143 R12: 1ffff1003a88ff43 [ 35.025143] R13: ffff8801d447fab8 R14: ffffffff899372c0 R15: ffff8801cff4b140 [ 35.032417] ? smc_unhash_sk+0x296/0x4b0 [ 35.036469] ? smc_unhash_sk+0x357/0x4b0 [ 35.040521] ? smc_unhash_sk+0x357/0x4b0 [ 35.044582] ? smc_rx_data_available+0x120/0x120 [ 35.049327] ? release_sock+0x1ec/0x2c0 [ 35.053297] ? __local_bh_enable_ip+0x161/0x230 [ 35.057959] ? __release_sock+0x3a0/0x3a0 [ 35.062134] ? smc_release+0x2c9/0x670 [ 35.066035] ? trace_hardirqs_on+0xd/0x10 [ 35.070184] ? __local_bh_enable_ip+0x161/0x230 [ 35.074860] smc_release+0x3cf/0x670 [ 35.078572] __sock_release+0xd7/0x260 [ 35.082464] ? __sock_release+0x260/0x260 [ 35.086786] sock_close+0x19/0x20 [ 35.090238] __fput+0x355/0x8b0 [ 35.093524] ? fput+0x1a0/0x1a0 [ 35.096812] ? _raw_spin_unlock_irq+0x27/0x70 [ 35.101304] ____fput+0x15/0x20 [ 35.104585] task_work_run+0x1ec/0x2a0 [ 35.108464] ? task_work_cancel+0x250/0x250 [ 35.112774] ? exit_to_usermode_loop+0x8c/0x370 [ 35.117436] exit_to_usermode_loop+0x313/0x370 [ 35.122010] ? syscall_slow_exit_work+0x500/0x500 [ 35.126850] ? mm_fault_error+0x380/0x380 [ 35.130986] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.136552] do_fast_syscall_32+0xcd5/0xfb2 [ 35.140896] ? do_int80_syscall_32+0x890/0x890 [ 35.145483] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.150234] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.155768] ? syscall_return_slowpath+0x31d/0x5e0 [ 35.160686] ? sysret32_from_system_call+0x5/0x46 [ 35.165526] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.170370] entry_SYSENTER_compat+0x70/0x7f [ 35.174766] RIP: 0023:0xf7f5acb9 [ 35.178109] Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 35.197295] RSP: 002b:00000000fffcd6bc EFLAGS: 00000246 ORIG_RAX: 0000000000000006 [ 35.204998] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000081505f0 [ 35.212269] RDX: 0000000000000005 RSI: 0000000000000001 RDI: 00000000fffcdd78 [ 35.219532] RBP: 00000000000003c0 R08: 0000000000000000 R09: 0000000000000000 [ 35.226800] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 35.234068] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 35.241906] Dumping ftrace buffer: [ 35.245543] (ftrace buffer empty) [ 35.249231] Kernel Offset: disabled [ 35.252845] Rebooting in 86400 seconds..