[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 21.031082] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.615342] random: sshd: uninitialized urandom read (32 bytes read) [ 22.992248] random: sshd: uninitialized urandom read (32 bytes read) [ 23.872952] random: sshd: uninitialized urandom read (32 bytes read) [ 26.003070] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.19' (ECDSA) to the list of known hosts. [ 31.494824] random: sshd: uninitialized urandom read (32 bytes read) 2018/07/11 12:51:00 parsed 1 programs [ 33.483968] random: cc1: uninitialized urandom read (8 bytes read) 2018/07/11 12:51:03 executed programs: 0 [ 35.025947] IPVS: ftp: loaded support on port[0] = 21 [ 35.265172] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.271800] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.280534] device bridge_slave_0 entered promiscuous mode [ 35.299824] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.306589] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.314071] device bridge_slave_1 entered promiscuous mode [ 35.330827] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 35.349554] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 35.397381] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 35.417706] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 35.492826] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 35.500622] team0: Port device team_slave_0 added [ 35.517053] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 35.524608] team0: Port device team_slave_1 added [ 35.541699] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 35.561545] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 35.581446] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 35.601365] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 35.743360] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.750111] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.757468] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.764092] bridge0: port 1(bridge_slave_0) entered forwarding state [ 36.270320] 8021q: adding VLAN 0 to HW filter on device bond0 [ 36.318781] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 36.368624] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 36.374906] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 36.383187] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 36.429588] 8021q: adding VLAN 0 to HW filter on device team0 [ 36.739518] WARNING: CPU: 1 PID: 4848 at include/net/sock.h:644 smc_unhash_sk+0x357/0x4b0 [ 36.748191] Kernel panic - not syncing: panic_on_warn set ... [ 36.748191] [ 36.755574] CPU: 1 PID: 4848 Comm: syz-executor0 Not tainted 4.18.0-rc4+ #44 [ 36.762763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.772396] Call Trace: [ 36.775046] dump_stack+0x1c9/0x2b4 [ 36.778679] ? dump_stack_print_info.cold.2+0x52/0x52 [ 36.783908] panic+0x238/0x4e7 [ 36.787122] ? add_taint.cold.5+0x16/0x16 [ 36.791282] ? __warn.cold.8+0x148/0x1ba [ 36.795342] ? __warn.cold.8+0x117/0x1ba [ 36.799435] ? smc_unhash_sk+0x357/0x4b0 [ 36.803510] __warn.cold.8+0x163/0x1ba [ 36.807501] ? smc_unhash_sk+0x357/0x4b0 [ 36.811562] report_bug+0x252/0x2d0 [ 36.815277] do_error_trap+0x1fc/0x4d0 [ 36.819244] ? graph_lock+0x170/0x170 [ 36.823046] ? math_error+0x3e0/0x3e0 [ 36.826869] ? lock_acquire+0x1e4/0x540 [ 36.831284] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.836482] do_invalid_op+0x1b/0x20 [ 36.840190] invalid_op+0x14/0x20 [ 36.843649] RIP: 0010:smc_unhash_sk+0x357/0x4b0 [ 36.848335] 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 [ 36.867564] RSP: 0018:ffff8801d760f9f8 EFLAGS: 00010293 [ 36.872922] RAX: ffff8801cf444200 RBX: ffff8801cf6d90c0 RCX: ffffffff8761b7f6 [ 36.880199] RDX: 0000000000000000 RSI: ffffffff8761b8b7 RDI: 0000000000000005 [ 36.887469] RBP: ffff8801d760fae0 R08: ffff8801cf444200 R09: ffffed0039edb228 [ 36.894734] R10: ffffed0039edb228 R11: ffff8801cf6d9143 R12: 1ffff1003aec1f43 [ 36.901995] R13: ffff8801d760fab8 R14: ffffffff89937140 R15: ffff8801cf6d9140 [ 36.909291] ? smc_unhash_sk+0x296/0x4b0 [ 36.913368] ? smc_unhash_sk+0x357/0x4b0 [ 36.917463] ? smc_unhash_sk+0x357/0x4b0 [ 36.921542] ? smc_rx_data_available+0x120/0x120 [ 36.926308] ? release_sock+0x1ec/0x2c0 [ 36.930315] ? __local_bh_enable_ip+0x161/0x230 [ 36.935095] ? __release_sock+0x3a0/0x3a0 [ 36.939252] ? smc_release+0x2c9/0x670 [ 36.943143] ? trace_hardirqs_on+0xd/0x10 [ 36.947294] ? __local_bh_enable_ip+0x161/0x230 [ 36.951975] smc_release+0x3cf/0x670 [ 36.955702] __sock_release+0xd7/0x260 [ 36.959602] ? __sock_release+0x260/0x260 [ 36.963777] sock_close+0x19/0x20 [ 36.967239] __fput+0x355/0x8b0 [ 36.970538] ? fput+0x1a0/0x1a0 [ 36.973876] ? _raw_spin_unlock_irq+0x27/0x70 [ 36.978402] ____fput+0x15/0x20 [ 36.981707] task_work_run+0x1ec/0x2a0 [ 36.985631] ? task_work_cancel+0x250/0x250 [ 36.990014] ? exit_to_usermode_loop+0x8c/0x370 [ 36.994727] exit_to_usermode_loop+0x313/0x370 [ 36.999329] ? syscall_slow_exit_work+0x500/0x500 [ 37.004176] ? mm_fault_error+0x380/0x380 [ 37.008337] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.013878] do_fast_syscall_32+0xcd5/0xfb2 [ 37.018212] ? do_int80_syscall_32+0x890/0x890 [ 37.022810] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 37.027603] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.033177] ? syscall_return_slowpath+0x31d/0x5e0 [ 37.038138] ? sysret32_from_system_call+0x5/0x46 [ 37.043048] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.047914] entry_SYSENTER_compat+0x70/0x7f [ 37.052338] RIP: 0023:0xf7f92cb9 [ 37.055699] 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 [ 37.074893] RSP: 002b:00000000ff9d0aac EFLAGS: 00000246 ORIG_RAX: 0000000000000006 [ 37.082629] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000008150308 [ 37.089910] RDX: 0000000000000004 RSI: 0000000000000001 RDI: 00000000ff9d1168 [ 37.097207] RBP: 00000000000003c0 R08: 0000000000000000 R09: 0000000000000000 [ 37.104498] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 37.111773] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 37.120093] Dumping ftrace buffer: [ 37.123881] (ftrace buffer empty) [ 37.127593] Kernel Offset: disabled [ 37.131212] Rebooting in 86400 seconds..