[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 23.006752] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 28.663916] random: sshd: uninitialized urandom read (32 bytes read) [ 29.048920] random: sshd: uninitialized urandom read (32 bytes read) [ 29.593224] random: sshd: uninitialized urandom read (32 bytes read) [ 72.074434] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.21' (ECDSA) to the list of known hosts. [ 77.680789] random: sshd: uninitialized urandom read (32 bytes read) 2018/08/25 12:57:56 parsed 1 programs [ 78.796969] random: cc1: uninitialized urandom read (8 bytes read) 2018/08/25 12:57:58 executed programs: 0 [ 80.024994] IPVS: ftp: loaded support on port[0] = 21 [ 80.229208] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.235650] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.242803] device bridge_slave_0 entered promiscuous mode [ 80.258854] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.265339] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.272272] device bridge_slave_1 entered promiscuous mode [ 80.288170] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 80.304520] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 80.345062] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 80.363447] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 80.429401] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 80.436768] team0: Port device team_slave_0 added [ 80.452087] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 80.459344] team0: Port device team_slave_1 added [ 80.474680] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 80.491473] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 80.509101] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 80.527607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 80.652220] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.658910] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.666090] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.672508] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.125339] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 81.131484] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.177497] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 81.184756] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 81.231404] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 81.237734] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.245908] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.288201] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.568673] 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. [ 81.598371] kasan: CONFIG_KASAN_INLINE enabled [ 81.603098] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 81.610561] general protection fault: 0000 [#1] SMP KASAN [ 81.616104] CPU: 0 PID: 4726 Comm: syz-executor0 Not tainted 4.18.0+ #207 [ 81.623014] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.632376] RIP: 0010:kvm_pv_send_ipi+0x582/0xaf0 [ 81.637205] Code: e0 07 83 c0 01 88 85 97 fe ff ff e8 48 0d 64 00 8b 85 b0 fe ff ff 44 01 e0 48 98 49 8d bc c7 18 02 00 00 48 89 fa 48 c1 ea 03 <42> 80 3c 32 00 0f 85 ed 03 00 00 49 8b 84 c7 18 02 00 00 48 8d b8 [ 81.656229] RSP: 0018:ffff8801abf17028 EFLAGS: 00010206 [ 81.661592] RAX: 000000000000002f RBX: ffff8801abf17190 RCX: ffffffff8118b074 [ 81.668849] RDX: 0000000000000072 RSI: ffffffff8118b0b8 RDI: 0000000000000390 [ 81.676104] RBP: ffff8801abf171b8 R08: ffff8801d0b8a780 R09: ffffed003b6046d6 [ 81.683363] R10: ffffed003b6046d6 R11: ffff8801db0236b3 R12: 000000000000000f [ 81.690625] R13: ffff8801abf17110 R14: dffffc0000000000 R15: 0000000000000000 [ 81.697889] FS: 0000000000f0e940(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 81.706100] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.711963] CR2: 0000000000000000 CR3: 00000001c784d000 CR4: 00000000001426f0 [ 81.719223] Call Trace: [ 81.721819] ? __lock_acquire+0x7fc/0x5020 [ 81.726046] ? kvm_apic_set_irq+0x170/0x170 [ 81.730367] ? __lock_is_held+0xb5/0x140 [ 81.734414] ? save_stack+0x43/0xd0 [ 81.738035] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.743560] ? vmx_read_guest_seg_ar+0x221/0x270 [ 81.748305] kvm_emulate_hypercall+0x9d7/0xea0 [ 81.752874] ? kvm_fast_pio+0x4f0/0x4f0 [ 81.756834] ? graph_lock+0x170/0x170 [ 81.760620] ? vmx_vcpu_run+0x13f9/0x277b [ 81.764752] ? vmx_vcpu_run+0x13ed/0x277b [ 81.768884] ? vmx_vcpu_run+0x13f9/0x277b [ 81.773021] ? vmx_vcpu_run+0x13ed/0x277b [ 81.777158] ? vmx_vcpu_run+0x13f9/0x277b [ 81.781290] ? vmx_vcpu_run+0x13ed/0x277b [ 81.785425] ? vmx_vcpu_run+0x13f9/0x277b [ 81.789618] ? vmx_vcpu_run+0x13ed/0x277b [ 81.793760] ? print_usage_bug+0xc0/0xc0 [ 81.797805] ? vmx_vcpu_run+0x13ed/0x277b [ 81.801941] ? __lock_is_held+0xb5/0x140 [ 81.806031] ? __vmx_complete_interrupts+0x103/0x3e0 [ 81.811129] handle_vmcall+0x15/0x20 [ 81.814829] ? handle_io+0x100/0x100 [ 81.818532] vmx_handle_exit+0x2dd/0x1760 [ 81.822665] ? lock_acquire+0x1e4/0x4f0 [ 81.826628] ? vcpu_enter_guest+0x1285/0x61a0 [ 81.831121] ? vcpu_enter_guest+0x1227/0x61a0 [ 81.835608] ? handle_vmfunc+0x9d0/0x9d0 [ 81.839704] ? trace_hardirqs_on+0xbd/0x2c0 [ 81.844015] ? kvm_arch_vcpu_ioctl_run+0x373/0x16d0 [ 81.849020] vcpu_enter_guest+0x143c/0x61a0 [ 81.853334] ? kasan_check_write+0x14/0x20 [ 81.857571] ? kvm_set_msr_common+0x2680/0x2680 [ 81.862236] ? vmx_vcpu_load+0xad2/0xfe0 [ 81.866293] ? find_held_lock+0x36/0x1c0 [ 81.870344] ? handle_dr+0x8c0/0x8c0 [ 81.874053] ? graph_lock+0x170/0x170 [ 81.877835] ? lock_downgrade+0x8f0/0x8f0 [ 81.881972] ? __kasan_slab_free+0x11a/0x170 [ 81.886438] ? kasan_slab_free+0xe/0x10 [ 81.890506] ? __lock_is_held+0xb5/0x140 [ 81.894666] ? kvm_check_async_pf_completion+0x3a7/0x5c0 [ 81.900103] ? kvm_clear_async_pf_completion_queue+0x790/0x790 [ 81.906066] ? kvm_arch_dev_ioctl+0x610/0x610 [ 81.910553] ? preempt_notifier_dec+0x20/0x20 [ 81.915045] kvm_arch_vcpu_ioctl_run+0x373/0x16d0 [ 81.919876] ? kvm_arch_vcpu_ioctl_run+0x373/0x16d0 [ 81.924883] kvm_vcpu_ioctl+0x7b8/0x1280 [ 81.928935] ? kvm_uevent_notify_change.part.32+0x440/0x440 [ 81.934635] ? exit_robust_list+0x290/0x290 [ 81.938940] ? lockdep_hardirqs_on+0x421/0x5c0 [ 81.943614] ? trace_hardirqs_on+0xbd/0x2c0 [ 81.947922] ? rcu_is_watching+0x8c/0x150 [ 81.952057] ? call_rcu_sched+0x12/0x20 [ 81.956021] ? trace_hardirqs_off_caller+0x2b0/0x2b0 [ 81.961114] ? rcu_cleanup_dead_rnp+0x200/0x200 [ 81.965772] ? graph_lock+0x170/0x170 [ 81.969562] ? note_gp_changes+0x420/0x420 [ 81.973782] ? mnt_get_count+0x150/0x150 [ 81.977830] ? blkcg_maybe_throttle_current+0xa56/0x10c0 [ 81.983279] ? _raw_spin_unlock+0x22/0x30 [ 81.987419] ? blkcg_print_stat+0x1420/0x1420 [ 81.991907] ? _raw_spin_unlock_irq+0x27/0x70 [ 81.996389] ? _raw_spin_unlock_irq+0x27/0x70 [ 82.000872] ? kvm_uevent_notify_change.part.32+0x440/0x440 [ 82.006574] do_vfs_ioctl+0x1de/0x1720 [ 82.010461] ? task_work_run+0x1af/0x2a0 [ 82.014506] ? trace_hardirqs_off_caller+0x2b0/0x2b0 [ 82.019598] ? ioctl_preallocate+0x300/0x300 [ 82.023997] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.029522] ? __fget_light+0x2f7/0x440 [ 82.033480] ? fget_raw+0x20/0x20 [ 82.036918] ? trace_hardirqs_off+0xb8/0x2b0 [ 82.041312] ? __x64_sys_futex+0x47f/0x6a0 [ 82.045531] ? do_syscall_64+0x9a/0x820 [ 82.049492] ? do_syscall_64+0x9a/0x820 [ 82.053452] ? lockdep_hardirqs_on+0x421/0x5c0 [ 82.058026] ? security_file_ioctl+0x94/0xc0 [ 82.062428] ksys_ioctl+0xa9/0xd0 [ 82.065873] __x64_sys_ioctl+0x73/0xb0 [ 82.069749] do_syscall_64+0x1b9/0x820 [ 82.073626] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 82.078970] ? syscall_return_slowpath+0x5e0/0x5e0 [ 82.083882] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 82.088710] ? trace_hardirqs_on_caller+0x2b0/0x2b0 [ 82.093710] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 82.098816] ? prepare_exit_to_usermode+0x291/0x3b0 [ 82.104455] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 82.109291] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.114467] RIP: 0033:0x457089 [ 82.117666] 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 [ 82.136601] RSP: 002b:00007fffaf58ad18 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 82.144320] RAX: ffffffffffffffda RBX: 0000000000f0e914 RCX: 0000000000457089 [ 82.151570] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 82.158822] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 [ 82.166082] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 82.173367] R13: 00000000004cedf0 R14: 00000000004c54c9 R15: 0000000000000000 [ 82.180621] Modules linked in: [ 82.183801] Dumping ftrace buffer: [ 82.187319] (ftrace buffer empty) [ 82.191981] ---[ end trace 9014b10693dfb605 ]--- [ 82.196785] RIP: 0010:kvm_pv_send_ipi+0x582/0xaf0 [ 82.201688] Code: e0 07 83 c0 01 88 85 97 fe ff ff e8 48 0d 64 00 8b 85 b0 fe ff ff 44 01 e0 48 98 49 8d bc c7 18 02 00 00 48 89 fa 48 c1 ea 03 <42> 80 3c 32 00 0f 85 ed 03 00 00 49 8b 84 c7 18 02 00 00 48 8d b8 [ 82.220642] RSP: 0018:ffff8801abf17028 EFLAGS: 00010206 [ 82.226030] RAX: 000000000000002f RBX: ffff8801abf17190 RCX: ffffffff8118b074 [ 82.233312] RDX: 0000000000000072 RSI: ffffffff8118b0b8 RDI: 0000000000000390 [ 82.240605] RBP: ffff8801abf171b8 R08: ffff8801d0b8a780 R09: ffffed003b6046d6 [ 82.247918] R10: ffffed003b6046d6 R11: ffff8801db0236b3 R12: 000000000000000f [ 82.255203] R13: ffff8801abf17110 R14: dffffc0000000000 R15: 0000000000000000 [ 82.262495] FS: 0000000000f0e940(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 82.270737] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.276637] CR2: 0000000000000000 CR3: 00000001c784d000 CR4: 00000000001426f0 [ 82.283942] Kernel panic - not syncing: Fatal exception [ 82.289654] Dumping ftrace buffer: [ 82.293184] (ftrace buffer empty) [ 82.296873] Kernel Offset: disabled [ 82.300479] Rebooting in 86400 seconds..