[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 24.591921] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.372735] random: sshd: uninitialized urandom read (32 bytes read) [ 26.691510] random: sshd: uninitialized urandom read (32 bytes read) [ 27.284129] random: sshd: uninitialized urandom read (32 bytes read) [ 37.073859] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.15.222' (ECDSA) to the list of known hosts. [ 42.753056] random: sshd: uninitialized urandom read (32 bytes read) 2018/09/10 10:50:30 parsed 1 programs [ 43.903526] random: cc1: uninitialized urandom read (8 bytes read) 2018/09/10 10:50:32 executed programs: 0 [ 45.087876] IPVS: ftp: loaded support on port[0] = 21 [ 45.327316] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.334137] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.341486] device bridge_slave_0 entered promiscuous mode [ 45.360121] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.366572] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.373682] device bridge_slave_1 entered promiscuous mode [ 45.390411] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 45.408045] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 45.453763] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 45.473346] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 45.545966] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 45.553467] team0: Port device team_slave_0 added [ 45.569513] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 45.576855] team0: Port device team_slave_1 added [ 45.593603] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 45.612273] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 45.631840] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 45.651815] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 45.794752] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.801242] bridge0: port 2(bridge_slave_1) entered forwarding state [ 45.808013] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.814403] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.317486] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.369486] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 46.418680] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 46.424927] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 46.434329] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 46.477229] 8021q: adding VLAN 0 to HW filter on device team0 [ 46.783528] 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. [ 46.886137] kasan: CONFIG_KASAN_INLINE enabled [ 46.890829] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 46.898418] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 46.904643] CPU: 1 PID: 5611 Comm: syz-executor0 Not tainted 4.19.0-rc3+ #231 [ 46.911891] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.921234] RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 [ 46.926056] Code: 45 84 ed 0f 84 da 07 00 00 e8 b8 d4 65 00 48 8d 4b 14 48 b8 00 00 00 00 00 fc ff df 48 89 ca 48 89 8d 70 fe ff ff 48 c1 ea 03 <0f> b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f5 [ 46.944944] RSP: 0018:ffff8801cef57028 EFLAGS: 00010203 [ 46.950290] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014 [ 46.957539] RDX: 0000000000000002 RSI: ffffffff8118fc08 RDI: 0000000000000005 [ 46.964787] RBP: ffff8801cef571c8 R08: ffff8801cef3e240 R09: 1ffffffff12b43d5 [ 46.972036] R10: ffffed003b5e4732 R11: ffff8801daf23993 R12: ffff8801cef571a0 [ 46.979287] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801cef57120 [ 46.986541] FS: 00007fb19d0e2700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 46.994748] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.000607] CR2: 0000000000000000 CR3: 00000001bd76c000 CR4: 00000000001426e0 [ 47.007857] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.015103] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.022347] Call Trace: [ 47.024924] ? __lock_is_held+0xb5/0x140 [ 47.028965] ? graph_lock+0x170/0x170 [ 47.032749] ? kvm_apic_set_irq+0x170/0x170 [ 47.037054] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.042571] ? check_preemption_disabled+0x48/0x200 [ 47.047565] ? check_preemption_disabled+0x48/0x200 [ 47.052564] ? __lock_is_held+0xb5/0x140 [ 47.056609] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.062239] ? vmx_read_guest_seg_ar+0x221/0x270 [ 47.066985] kvm_emulate_hypercall+0xa1a/0xf20 [ 47.071552] ? kvm_gen_update_masterclock+0x350/0x350 [ 47.076728] ? graph_lock+0x170/0x170 [ 47.080649] ? vmx_vcpu_run+0x135b/0x2700 [ 47.084777] ? vmx_vcpu_run+0x134f/0x2700 [ 47.088909] ? vmx_vcpu_run+0x135b/0x2700 [ 47.093045] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.098563] ? check_preemption_disabled+0x48/0x200 [ 47.103560] ? check_preemption_disabled+0x48/0x200 [ 47.108562] ? __lock_is_held+0xb5/0x140 [ 47.112612] handle_vmcall+0x15/0x20 [ 47.116309] ? handle_io+0x100/0x100 [ 47.120007] vmx_handle_exit+0x2f7/0x17e0 [ 47.124135] ? lock_acquire+0x1ed/0x520 [ 47.128094] ? vcpu_enter_guest+0x12f2/0x62e0 [ 47.132568] ? vcpu_enter_guest+0x1271/0x62e0 [ 47.137136] ? handle_vmfunc+0x9d0/0x9d0 [ 47.141190] ? trace_hardirqs_on+0xbd/0x310 [ 47.145494] ? kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 47.150649] ? check_preemption_disabled+0x48/0x200 [ 47.155650] ? check_preemption_disabled+0x48/0x200 [ 47.160655] vcpu_enter_guest+0x14a9/0x62e0 [ 47.164956] ? __phys_addr+0xa6/0x120 [ 47.168740] ? emulator_read_emulated+0x50/0x50 [ 47.173515] ? check_preemption_disabled+0x48/0x200 [ 47.178663] ? vmx_vcpu_load+0xb06/0x1030 [ 47.182798] ? vmx_write_tsc_offset+0x680/0x680 [ 47.187452] ? graph_lock+0x170/0x170 [ 47.191244] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.196774] ? check_preemption_disabled+0x48/0x200 [ 47.201769] ? check_preemption_disabled+0x48/0x200 [ 47.206903] ? __lock_is_held+0xb5/0x140 [ 47.210953] ? kvm_check_async_pf_completion+0x3ae/0x5c0 [ 47.216386] ? kvm_clear_async_pf_completion_queue+0x770/0x770 [ 47.222341] ? kvm_arch_dev_ioctl+0x630/0x630 [ 47.226821] ? preempt_notifier_dec+0x20/0x20 [ 47.231300] kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 47.236122] ? kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 47.241124] kvm_vcpu_ioctl+0x72b/0x1150 [ 47.245168] ? kvm_vcpu_block+0x1030/0x1030 [ 47.249498] ? find_held_lock+0x36/0x1c0 [ 47.253546] ? __fget+0x4aa/0x740 [ 47.256980] ? check_preemption_disabled+0x48/0x200 [ 47.261991] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 47.267776] ? kasan_check_read+0x11/0x20 [ 47.271906] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 47.277162] ? rcu_bh_qs+0xc0/0xc0 [ 47.280689] ? __fget+0x4d1/0x740 [ 47.284182] ? ksys_dup3+0x680/0x680 [ 47.287883] ? fget_raw+0x20/0x20 [ 47.291323] ? kvm_vcpu_block+0x1030/0x1030 [ 47.295628] do_vfs_ioctl+0x1de/0x1720 [ 47.299500] ? lock_release+0x970/0x970 [ 47.303483] ? arch_local_save_flags+0x40/0x40 [ 47.308062] ? ioctl_preallocate+0x300/0x300 [ 47.312453] ? __fget_light+0x2e9/0x430 [ 47.316406] ? fget_raw+0x20/0x20 [ 47.319843] ? mqueue_flush_file+0x110/0x110 [ 47.324242] ? __x64_sys_futex+0x47f/0x6a0 [ 47.328462] ? do_syscall_64+0x9a/0x820 [ 47.332414] ? do_syscall_64+0x9a/0x820 [ 47.336379] ? lockdep_hardirqs_on+0x421/0x5c0 [ 47.341081] ? security_file_ioctl+0x94/0xc0 [ 47.345473] ksys_ioctl+0xa9/0xd0 [ 47.348906] __x64_sys_ioctl+0x73/0xb0 [ 47.352775] do_syscall_64+0x1b9/0x820 [ 47.356647] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 47.361990] ? syscall_return_slowpath+0x5e0/0x5e0 [ 47.366914] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 47.371738] ? trace_hardirqs_on_caller+0x310/0x310 [ 47.376732] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 47.381736] ? prepare_exit_to_usermode+0x291/0x3b0 [ 47.386751] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 47.391586] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.397226] RIP: 0033:0x457099 [ 47.400417] 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 [ 47.419305] RSP: 002b:00007fb19d0e1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 47.426994] RAX: ffffffffffffffda RBX: 00007fb19d0e26d4 RCX: 0000000000457099 [ 47.434258] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 47.441509] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 [ 47.448761] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 47.456009] R13: 00000000004cf730 R14: 00000000004c59b9 R15: 0000000000000000 [ 47.463348] Modules linked in: [ 47.466588] Dumping ftrace buffer: [ 47.470105] (ftrace buffer empty) [ 47.477069] ---[ end trace 5740cfb43a8af030 ]--- [ 47.483064] RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 [ 47.488002] Code: 45 84 ed 0f 84 da 07 00 00 e8 b8 d4 65 00 48 8d 4b 14 48 b8 00 00 00 00 00 fc ff df 48 89 ca 48 89 8d 70 fe ff ff 48 c1 ea 03 <0f> b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f5 [ 47.506998] RSP: 0018:ffff8801cef57028 EFLAGS: 00010203 [ 47.512466] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014 [ 47.519726] RDX: 0000000000000002 RSI: ffffffff8118fc08 RDI: 0000000000000005 [ 47.527049] RBP: ffff8801cef571c8 R08: ffff8801cef3e240 R09: 1ffffffff12b43d5 [ 47.534325] R10: ffffed003b5e4732 R11: ffff8801daf23993 R12: ffff8801cef571a0 [ 47.542316] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801cef57120 [ 47.549591] FS: 00007fb19d0e2700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 47.557845] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.563748] CR2: 0000000000000000 CR3: 00000001bd76c000 CR4: 00000000001426e0 [ 47.571074] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.578356] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.585655] Kernel panic - not syncing: Fatal exception [ 47.591401] Dumping ftrace buffer: [ 47.594937] (ftrace buffer empty) [ 47.599173] Kernel Offset: disabled [ 47.602797] Rebooting in 86400 seconds..