[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 18.751444] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.008205] random: sshd: uninitialized urandom read (32 bytes read) [ 23.384539] random: sshd: uninitialized urandom read (32 bytes read) [ 23.940776] random: sshd: uninitialized urandom read (32 bytes read) [ 83.419938] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.15.205' (ECDSA) to the list of known hosts. [ 88.953223] random: sshd: uninitialized urandom read (32 bytes read) 2018/09/09 14:42:05 parsed 1 programs [ 89.845366] random: cc1: uninitialized urandom read (8 bytes read) 2018/09/09 14:42:06 executed programs: 0 [ 90.641471] IPVS: ftp: loaded support on port[0] = 21 [ 90.855709] bridge0: port 1(bridge_slave_0) entered blocking state [ 90.862193] bridge0: port 1(bridge_slave_0) entered disabled state [ 90.870224] device bridge_slave_0 entered promiscuous mode [ 90.887217] bridge0: port 2(bridge_slave_1) entered blocking state [ 90.893608] bridge0: port 2(bridge_slave_1) entered disabled state [ 90.900727] device bridge_slave_1 entered promiscuous mode [ 90.917561] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 90.934312] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 90.978522] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 90.997515] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 91.065440] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 91.072811] team0: Port device team_slave_0 added [ 91.089159] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 91.096588] team0: Port device team_slave_1 added [ 91.113210] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 91.130445] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 91.147930] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 91.167000] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 91.293928] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.300513] bridge0: port 2(bridge_slave_1) entered forwarding state [ 91.307351] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.313732] bridge0: port 1(bridge_slave_0) entered forwarding state [ 91.758576] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 91.764701] 8021q: adding VLAN 0 to HW filter on device bond0 [ 91.811623] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 91.855210] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 91.865534] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 91.872125] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 91.879051] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 91.919274] 8021q: adding VLAN 0 to HW filter on device team0 [ 92.193636] 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. [ 92.221366] WARNING: CPU: 0 PID: 4559 at arch/x86/kvm/vmx.c:8247 enter_vmx_operation+0x391/0x470 [ 92.230448] Kernel panic - not syncing: panic_on_warn set ... [ 92.230448] [ 92.237808] CPU: 0 PID: 4559 Comm: syz-executor0 Not tainted 4.19.0-rc2-next-20180904+ #55 [ 92.246189] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.255661] Call Trace: [ 92.258242] dump_stack+0x1c9/0x2b4 [ 92.261861] ? dump_stack_print_info.cold.2+0x52/0x52 [ 92.267037] panic+0x238/0x4e7 [ 92.270214] ? add_taint.cold.5+0x16/0x16 [ 92.274343] ? __warn.cold.8+0x148/0x1ba [ 92.278393] ? __warn.cold.8+0x117/0x1ba [ 92.282447] ? enter_vmx_operation+0x391/0x470 [ 92.287013] __warn.cold.8+0x163/0x1ba [ 92.290883] ? enter_vmx_operation+0x391/0x470 [ 92.295458] report_bug+0x252/0x2d0 [ 92.299073] do_error_trap+0x1fc/0x4d0 [ 92.302951] ? math_error+0x3e0/0x3e0 [ 92.307064] ? mark_held_locks+0xc9/0x160 [ 92.311208] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 92.316041] ? trace_hardirqs_on_caller+0x2b0/0x2b0 [ 92.321608] ? kmem_cache_alloc_trace+0x275/0x730 [ 92.326447] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 92.331659] do_invalid_op+0x1b/0x20 [ 92.335368] invalid_op+0x14/0x20 [ 92.338814] RIP: 0010:enter_vmx_operation+0x391/0x470 [ 92.343989] Code: 00 4c 89 ef bb f4 ff ff ff e8 7b ec ff ff e9 f2 fe ff ff e8 91 f1 5f 00 48 8b 4d d0 48 85 c9 0f 84 08 ff ff ff e8 7f f1 5f 00 <0f> 0b e9 0e fe ff ff e8 93 0d 9f 00 e9 c1 fe ff ff e8 a9 0d 9f 00 [ 92.362899] RSP: 0018:ffff8801c4b572d8 EFLAGS: 00010293 [ 92.368261] RAX: ffff8801c4774680 RBX: ffff8801c4940040 RCX: ffff8801d8a87000 [ 92.375590] RDX: 0000000000000000 RSI: ffffffff811ce4f1 RDI: ffff8801c4945820 [ 92.382850] RBP: ffff8801c4b57310 R08: ffff8801c4774680 R09: ffffed003b6046de [ 92.390106] R10: ffffed003b6046de R11: ffff8801db0236f3 R12: ffff8801c4945ba8 [ 92.397360] R13: ffff8801c4945bb8 R14: ffff8801c4945ba0 R15: ffff8801c49457a8 [ 92.404636] ? enter_vmx_operation+0x391/0x470 [ 92.409208] ? enter_vmx_operation+0x391/0x470 [ 92.413888] handle_vmon+0x470/0x510 [ 92.417590] ? nested_vmx_get_vmptr+0x1d0/0x1d0 [ 92.422264] ? nested_vmx_get_vmptr+0x1d0/0x1d0 [ 92.427031] vmx_handle_exit+0x2dd/0x1760 [ 92.431164] ? lock_acquire+0x1e4/0x4f0 [ 92.435196] ? vcpu_enter_guest+0x1285/0x61a0 [ 92.439682] ? vcpu_enter_guest+0x1227/0x61a0 [ 92.444172] ? handle_vmfunc+0x9d0/0x9d0 [ 92.448223] ? trace_hardirqs_on+0xbd/0x2c0 [ 92.452657] ? kvm_arch_vcpu_ioctl_run+0x373/0x16d0 [ 92.457734] vcpu_enter_guest+0x143c/0x61a0 [ 92.462050] ? kasan_check_write+0x14/0x20 [ 92.466439] ? kvm_set_msr_common+0x2680/0x2680 [ 92.471441] ? vmx_vcpu_load+0xad2/0xfe0 [ 92.475486] ? find_held_lock+0x36/0x1c0 [ 92.479845] ? handle_dr+0x8c0/0x8c0 [ 92.484356] ? graph_lock+0x170/0x170 [ 92.488152] ? lock_downgrade+0x8f0/0x8f0 [ 92.492287] ? __kasan_slab_free+0x11a/0x170 [ 92.496678] ? kasan_slab_free+0xe/0x10 [ 92.500637] ? __lock_is_held+0xb5/0x140 [ 92.504689] ? kvm_check_async_pf_completion+0x3a7/0x5c0 [ 92.510196] ? kvm_clear_async_pf_completion_queue+0x790/0x790 [ 92.516167] ? kvm_arch_dev_ioctl+0x610/0x610 [ 92.521647] ? preempt_notifier_dec+0x20/0x20 [ 92.526866] kvm_arch_vcpu_ioctl_run+0x373/0x16d0 [ 92.531700] ? kvm_arch_vcpu_ioctl_run+0x373/0x16d0 [ 92.536716] kvm_vcpu_ioctl+0x7b8/0x1280 [ 92.541749] ? kvm_uevent_notify_change.part.32+0x440/0x440 [ 92.547894] ? lockdep_hardirqs_on+0x421/0x5c0 [ 92.552464] ? exit_robust_list+0x290/0x290 [ 92.556776] ? do_raw_spin_unlock+0xa7/0x2f0 [ 92.561173] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 92.565741] ? add_mm_counter_fast+0xd0/0xd0 [ 92.570130] ? kfree+0x111/0x210 [ 92.573483] ? _raw_spin_unlock+0x22/0x30 [ 92.577726] ? __handle_mm_fault+0x945/0x4350 [ 92.582219] ? vmf_insert_mixed_mkwrite+0xa0/0xa0 [ 92.587048] ? graph_lock+0x170/0x170 [ 92.591646] ? kzfree+0x28/0x30 [ 92.594916] ? graph_lock+0x170/0x170 [ 92.598718] ? find_held_lock+0x36/0x1c0 [ 92.602770] ? __do_page_fault+0x620/0xe50 [ 92.606990] ? kvm_uevent_notify_change.part.32+0x440/0x440 [ 92.612697] do_vfs_ioctl+0x1de/0x1720 [ 92.616715] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 92.622238] ? ioctl_preallocate+0x300/0x300 [ 92.626637] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 92.632272] ? __fget_light+0x2f7/0x440 [ 92.636238] ? __handle_mm_fault+0x4350/0x4350 [ 92.640862] ? fget_raw+0x20/0x20 [ 92.644310] ? __x64_sys_futex+0x47f/0x6a0 [ 92.648528] ? do_syscall_64+0x9a/0x820 [ 92.652485] ? do_syscall_64+0x9a/0x820 [ 92.656443] ? lockdep_hardirqs_on+0x421/0x5c0 [ 92.661009] ? security_file_ioctl+0x94/0xc0 [ 92.665439] ksys_ioctl+0xa9/0xd0 [ 92.668885] __x64_sys_ioctl+0x73/0xb0 [ 92.672757] do_syscall_64+0x1b9/0x820 [ 92.676630] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 92.682217] ? syscall_return_slowpath+0x5e0/0x5e0 [ 92.688081] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 92.693754] ? trace_hardirqs_on_caller+0x2b0/0x2b0 [ 92.698764] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 92.703806] ? prepare_exit_to_usermode+0x291/0x3b0 [ 92.708820] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 92.714016] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.719195] RIP: 0033:0x457099 [ 92.722376] 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 [ 92.741277] RSP: 002b:00007ffc11dc89b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 92.748973] RAX: ffffffffffffffda RBX: 0000000001806914 RCX: 0000000000457099 [ 92.756224] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 92.763483] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 [ 92.770735] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 92.777989] R13: 00000000004cf730 R14: 00000000004c59b9 R15: 0000000000000000 [ 92.785769] Dumping ftrace buffer: [ 92.789387] (ftrace buffer empty) [ 92.793089] Kernel Offset: disabled [ 92.796709] Rebooting in 86400 seconds..