[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 23.514514] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 28.525006] random: sshd: uninitialized urandom read (32 bytes read) [ 28.804626] random: sshd: uninitialized urandom read (32 bytes read) [ 29.349276] random: sshd: uninitialized urandom read (32 bytes read) [ 184.449124] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.19' (ECDSA) to the list of known hosts. [ 189.976190] random: sshd: uninitialized urandom read (32 bytes read) 2018/08/29 03:47:46 parsed 1 programs [ 191.150951] random: cc1: uninitialized urandom read (8 bytes read) 2018/08/29 03:47:48 executed programs: 0 [ 192.484841] IPVS: ftp: loaded support on port[0] = 21 [ 192.688188] bridge0: port 1(bridge_slave_0) entered blocking state [ 192.694659] bridge0: port 1(bridge_slave_0) entered disabled state [ 192.701920] device bridge_slave_0 entered promiscuous mode [ 192.718525] bridge0: port 2(bridge_slave_1) entered blocking state [ 192.724881] bridge0: port 2(bridge_slave_1) entered disabled state [ 192.731828] device bridge_slave_1 entered promiscuous mode [ 192.747136] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 192.763867] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 192.806096] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 192.824074] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 192.888951] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 192.896439] team0: Port device team_slave_0 added [ 192.911426] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 192.918914] team0: Port device team_slave_1 added [ 192.935583] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 192.952564] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 192.969954] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 192.987328] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 193.108056] bridge0: port 2(bridge_slave_1) entered blocking state [ 193.114525] bridge0: port 2(bridge_slave_1) entered forwarding state [ 193.121352] bridge0: port 1(bridge_slave_0) entered blocking state [ 193.127847] bridge0: port 1(bridge_slave_0) entered forwarding state [ 193.555458] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 193.561603] 8021q: adding VLAN 0 to HW filter on device bond0 [ 193.606487] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 193.643058] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 193.658926] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 193.665120] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 193.673116] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 193.712994] 8021q: adding VLAN 0 to HW filter on device team0 [ 193.981855] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details. [ 194.006370] WARNING: CPU: 1 PID: 4748 at arch/x86/kvm/vmx.c:8247 enter_vmx_operation+0x391/0x470 [ 194.015431] Kernel panic - not syncing: panic_on_warn set ... [ 194.015431] [ 194.022799] CPU: 1 PID: 4748 Comm: syz-executor0 Not tainted 4.19.0-rc1+ #213 [ 194.030055] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 194.039394] Call Trace: [ 194.041977] dump_stack+0x1c9/0x2b4 [ 194.045597] ? dump_stack_print_info.cold.2+0x52/0x52 [ 194.050779] panic+0x238/0x4e7 [ 194.053955] ? add_taint.cold.5+0x16/0x16 [ 194.058097] ? __warn.cold.8+0x148/0x1ba [ 194.062150] ? __warn.cold.8+0x117/0x1ba [ 194.066194] ? enter_vmx_operation+0x391/0x470 [ 194.070758] __warn.cold.8+0x163/0x1ba [ 194.074627] ? enter_vmx_operation+0x391/0x470 [ 194.079202] report_bug+0x252/0x2d0 [ 194.082919] do_error_trap+0x1fc/0x4d0 [ 194.086798] ? math_error+0x3e0/0x3e0 [ 194.090591] ? mark_held_locks+0xc9/0x160 [ 194.094729] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 194.099561] ? trace_hardirqs_on_caller+0x2b0/0x2b0 [ 194.104616] ? kmem_cache_alloc_trace+0x275/0x730 [ 194.109467] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 194.114298] do_invalid_op+0x1b/0x20 [ 194.117994] invalid_op+0x14/0x20 [ 194.121438] RIP: 0010:enter_vmx_operation+0x391/0x470 [ 194.126614] Code: 00 4c 89 ef bb f4 ff ff ff e8 7b ec ff ff e9 f2 fe ff ff e8 71 dc 5f 00 48 8b 4d d0 48 85 c9 0f 84 08 ff ff ff e8 5f dc 5f 00 <0f> 0b e9 0e fe ff ff e8 f3 d9 9e 00 e9 c1 fe ff ff e8 09 da 9e 00 [ 194.145511] RSP: 0018:ffff8801aa826f48 EFLAGS: 00010293 [ 194.150867] RAX: ffff8801abbde080 RBX: ffff8801d3668040 RCX: ffff8801c366d000 [ 194.158121] RDX: 0000000000000000 RSI: ffffffff811ce421 RDI: ffff8801d366d820 [ 194.165379] RBP: ffff8801aa826f80 R08: ffff8801abbde080 R09: ffffed003b6246de [ 194.172635] R10: ffffed003b6246de R11: ffff8801db1236f3 R12: ffff8801d366dba8 [ 194.179897] R13: ffff8801d366dbb8 R14: ffff8801d366dba0 R15: ffff8801d366d7a8 [ 194.187180] ? enter_vmx_operation+0x391/0x470 [ 194.191858] ? enter_vmx_operation+0x391/0x470 [ 194.196490] vmx_set_nested_state+0x4d6/0xea0 [ 194.201093] ? handle_vmlaunch+0x20/0x20 [ 194.205154] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 194.210681] ? _copy_from_user+0xdf/0x150 [ 194.214819] kvm_arch_vcpu_ioctl+0x790/0x3ac0 [ 194.219298] ? __lock_acquire+0x7fc/0x5020 [ 194.223529] ? _raw_spin_unlock_irq+0x27/0x70 [ 194.228016] ? finish_task_switch+0x1d3/0x870 [ 194.232501] ? kvm_arch_vcpu_put+0x420/0x420 [ 194.236896] ? mark_held_locks+0x160/0x160 [ 194.241122] ? __switch_to_asm+0x34/0x70 [ 194.245192] ? __switch_to_asm+0x34/0x70 [ 194.249250] ? __switch_to_asm+0x40/0x70 [ 194.253304] ? __switch_to_asm+0x34/0x70 [ 194.257352] ? __switch_to_asm+0x40/0x70 [ 194.261403] ? __switch_to_asm+0x34/0x70 [ 194.265455] ? __switch_to_asm+0x40/0x70 [ 194.269506] ? __schedule+0x884/0x1df0 [ 194.273387] ? __sched_text_start+0x8/0x8 [ 194.277534] ? graph_lock+0x170/0x170 [ 194.281331] ? plist_check_list+0xa0/0xa0 [ 194.285489] ? print_usage_bug+0xc0/0xc0 [ 194.289541] ? lock_acquire+0x1e4/0x4f0 [ 194.293503] ? kvm_vcpu_ioctl+0x1ea/0x1280 [ 194.297737] ? lock_acquire+0x1e4/0x4f0 [ 194.301705] ? lock_release+0x9f0/0x9f0 [ 194.305718] ? check_same_owner+0x340/0x340 [ 194.310035] ? rcu_note_context_switch+0x680/0x680 [ 194.314954] ? kasan_check_write+0x14/0x20 [ 194.319179] ? __mutex_lock+0x6d0/0x1700 [ 194.323242] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 194.328785] ? kvm_vcpu_ioctl+0x1ea/0x1280 [ 194.333171] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 194.338171] ? futex_wait_setup+0x281/0x410 [ 194.342477] ? mutex_trylock+0x2b0/0x2b0 [ 194.346566] ? futex_wake+0x760/0x760 [ 194.350361] ? __lock_acquire+0x7fc/0x5020 [ 194.354617] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 194.360146] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 194.365241] ? futex_wait+0x5d2/0xa20 [ 194.369039] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 194.374227] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 194.379759] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 194.384858] ? futex_wake+0x304/0x760 [ 194.388652] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 194.393576] ? wait_for_completion+0x8d0/0x8d0 [ 194.398165] kvm_vcpu_ioctl+0x286/0x1280 [ 194.402218] ? kvm_uevent_notify_change.part.32+0x440/0x440 [ 194.408027] ? find_held_lock+0x36/0x1c0 [ 194.412087] ? lock_downgrade+0x8f0/0x8f0 [ 194.416299] ? __switch_to_asm+0x40/0x70 [ 194.420354] ? kasan_check_read+0x11/0x20 [ 194.424492] ? rcu_is_watching+0x8c/0x150 [ 194.428640] ? rcu_cleanup_dead_rnp+0x200/0x200 [ 194.433318] ? __fget+0x4d5/0x740 [ 194.436855] ? ksys_dup3+0x690/0x690 [ 194.440567] ? kvm_uevent_notify_change.part.32+0x440/0x440 [ 194.446271] do_vfs_ioctl+0x1de/0x1720 [ 194.450152] ? ioctl_preallocate+0x300/0x300 [ 194.454548] ? __fget_light+0x2f7/0x440 [ 194.458508] ? __schedule+0x1df0/0x1df0 [ 194.462470] ? fget_raw+0x20/0x20 [ 194.465908] ? trace_hardirqs_off+0xb8/0x2b0 [ 194.470307] ? __x64_sys_futex+0x47f/0x6a0 [ 194.474532] ? do_syscall_64+0x9a/0x820 [ 194.478495] ? do_syscall_64+0x9a/0x820 [ 194.482457] ? lockdep_hardirqs_on+0x421/0x5c0 [ 194.487028] ? security_file_ioctl+0x94/0xc0 [ 194.491432] ksys_ioctl+0xa9/0xd0 [ 194.494874] __x64_sys_ioctl+0x73/0xb0 [ 194.498756] do_syscall_64+0x1b9/0x820 [ 194.502635] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 194.507988] ? syscall_return_slowpath+0x5e0/0x5e0 [ 194.512903] ? trace_hardirqs_on_caller+0x2b0/0x2b0 [ 194.517907] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 194.522949] ? recalc_sigpending_tsk+0x180/0x180 [ 194.527700] ? kasan_check_write+0x14/0x20 [ 194.531929] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 194.536764] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 194.541941] RIP: 0033:0x457089 [ 194.545122] Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 194.564026] RSP: 002b:00007f0ac2b1cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 194.571734] RAX: ffffffffffffffda RBX: 00007f0ac2b1d6d4 RCX: 0000000000457089 [ 194.578997] RDX: 0000000020000580 RSI: 000000004080aebf RDI: 0000000000000005 [ 194.586264] RBP: 0000000000930140 R08: 0000000000000000 R09: 0000000000000000 [ 194.593527] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 194.600783] R13: 00000000004cf070 R14: 00000000004c56c3 R15: 0000000000000001 [ 194.608500] Dumping ftrace buffer: [ 194.612106] (ftrace buffer empty) [ 194.615802] Kernel Offset: disabled [ 194.619418] Rebooting in 86400 seconds..