[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 18.873801] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.506906] random: sshd: uninitialized urandom read (32 bytes read) [ 23.839762] random: sshd: uninitialized urandom read (32 bytes read) [ 24.721719] random: sshd: uninitialized urandom read (32 bytes read) [ 24.875674] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.61' (ECDSA) to the list of known hosts. [ 30.366678] random: sshd: uninitialized urandom read (32 bytes read) 2018/07/12 00:20:04 parsed 1 programs [ 32.021521] random: cc1: uninitialized urandom read (8 bytes read) 2018/07/12 00:20:07 executed programs: 0 [ 33.379268] IPVS: ftp: loaded support on port[0] = 21 [ 33.574823] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.581280] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.588661] device bridge_slave_0 entered promiscuous mode [ 33.604947] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.611317] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.618455] device bridge_slave_1 entered promiscuous mode [ 33.634438] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 33.650736] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 33.690274] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 33.708360] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 33.769944] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 33.777313] team0: Port device team_slave_0 added [ 33.792337] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 33.799450] team0: Port device team_slave_1 added [ 33.815287] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 33.832435] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 33.849273] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 33.866425] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 33.986181] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.992634] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.999542] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.005905] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.404848] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 34.410966] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.452505] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 34.494244] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 34.502543] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 34.540716] 8021q: adding VLAN 0 to HW filter on device team0 [ 34.784898] WARNING: CPU: 1 PID: 4765 at include/net/sock.h:644 smc_unhash_sk+0x357/0x4b0 [ 34.793348] Kernel panic - not syncing: panic_on_warn set ... [ 34.793348] [ 34.800713] CPU: 1 PID: 4765 Comm: syz-executor0 Not tainted 4.18.0-rc4+ #45 [ 34.807884] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.817224] Call Trace: [ 34.819802] dump_stack+0x1c9/0x2b4 [ 34.823416] ? dump_stack_print_info.cold.2+0x52/0x52 [ 34.828596] panic+0x238/0x4e7 [ 34.831779] ? add_taint.cold.5+0x16/0x16 [ 34.835913] ? __warn.cold.8+0x148/0x1ba [ 34.839966] ? __warn.cold.8+0x117/0x1ba [ 34.844018] ? smc_unhash_sk+0x357/0x4b0 [ 34.848071] __warn.cold.8+0x163/0x1ba [ 34.851944] ? smc_unhash_sk+0x357/0x4b0 [ 34.855991] report_bug+0x252/0x2d0 [ 34.859634] do_error_trap+0x1fc/0x4d0 [ 34.863506] ? graph_lock+0x170/0x170 [ 34.867288] ? math_error+0x3e0/0x3e0 [ 34.871080] ? lock_acquire+0x1e4/0x540 [ 34.875044] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.879872] do_invalid_op+0x1b/0x20 [ 34.883571] invalid_op+0x14/0x20 [ 34.887030] RIP: 0010:smc_unhash_sk+0x357/0x4b0 [ 34.891680] 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 [ 34.910864] RSP: 0018:ffff8801d6c979f8 EFLAGS: 00010293 [ 34.916220] RAX: ffff8801b038c4c0 RBX: ffff8801afc930c0 RCX: ffffffff8761b7f6 [ 34.923471] RDX: 0000000000000000 RSI: ffffffff8761b8b7 RDI: 0000000000000005 [ 34.930730] RBP: ffff8801d6c97ae0 R08: ffff8801b038c4c0 R09: ffffed0035f92628 [ 34.937988] R10: ffffed0035f92628 R11: ffff8801afc93143 R12: 1ffff1003ad92f43 [ 34.945242] R13: ffff8801d6c97ab8 R14: ffffffff899372c0 R15: ffff8801afc93140 [ 34.952508] ? smc_unhash_sk+0x296/0x4b0 [ 34.956551] ? smc_unhash_sk+0x357/0x4b0 [ 34.960593] ? smc_unhash_sk+0x357/0x4b0 [ 34.964639] ? smc_rx_data_available+0x120/0x120 [ 34.969376] ? release_sock+0x1ec/0x2c0 [ 34.973333] ? __local_bh_enable_ip+0x161/0x230 [ 34.977990] ? __release_sock+0x3a0/0x3a0 [ 34.982123] ? smc_release+0x2c9/0x670 [ 34.985992] ? trace_hardirqs_on+0xd/0x10 [ 34.990125] ? __local_bh_enable_ip+0x161/0x230 [ 34.994790] smc_release+0x3cf/0x670 [ 34.998486] __sock_release+0xd7/0x260 [ 35.002354] ? __sock_release+0x260/0x260 [ 35.006482] sock_close+0x19/0x20 [ 35.009918] __fput+0x355/0x8b0 [ 35.013180] ? fput+0x1a0/0x1a0 [ 35.016444] ? _raw_spin_unlock_irq+0x27/0x70 [ 35.020921] ____fput+0x15/0x20 [ 35.024181] task_work_run+0x1ec/0x2a0 [ 35.028054] ? task_work_cancel+0x250/0x250 [ 35.032360] ? exit_to_usermode_loop+0x8c/0x370 [ 35.037018] exit_to_usermode_loop+0x313/0x370 [ 35.041598] ? syscall_slow_exit_work+0x500/0x500 [ 35.046425] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.051956] do_fast_syscall_32+0xcd5/0xfb2 [ 35.056263] ? do_int80_syscall_32+0x890/0x890 [ 35.060829] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.065570] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.071089] ? syscall_return_slowpath+0x31d/0x5e0 [ 35.076002] ? sysret32_from_system_call+0x5/0x46 [ 35.080836] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.085664] entry_SYSENTER_compat+0x70/0x7f [ 35.090057] RIP: 0023:0xf7fbacb9 [ 35.093404] 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 [ 35.112575] RSP: 002b:00000000ffad737c EFLAGS: 00000246 ORIG_RAX: 0000000000000006 [ 35.120269] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000008150130 [ 35.127519] RDX: 0000000000000004 RSI: 0000000000000001 RDI: 00000000ffad7a38 [ 35.134773] RBP: 00000000000003c0 R08: 0000000000000000 R09: 0000000000000000 [ 35.142030] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 35.149288] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 35.157086] Dumping ftrace buffer: [ 35.160717] (ftrace buffer empty) [ 35.164405] Kernel Offset: disabled [ 35.168025] Rebooting in 86400 seconds..