[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 23.498651] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 32.315652] random: sshd: uninitialized urandom read (32 bytes read) [ 32.789089] random: sshd: uninitialized urandom read (32 bytes read) [ 33.346069] random: sshd: uninitialized urandom read (32 bytes read) [ 33.523458] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.14' (ECDSA) to the list of known hosts. [ 39.125683] random: sshd: uninitialized urandom read (32 bytes read) 2018/08/25 12:36:12 parsed 1 programs [ 40.163253] random: cc1: uninitialized urandom read (8 bytes read) 2018/08/25 12:36:14 executed programs: 0 [ 41.416920] IPVS: ftp: loaded support on port[0] = 21 [ 41.630289] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.636790] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.644416] device bridge_slave_0 entered promiscuous mode [ 41.661257] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.667648] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.674918] device bridge_slave_1 entered promiscuous mode [ 41.691370] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 41.708135] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 41.752096] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 41.771280] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 41.838122] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 41.845601] team0: Port device team_slave_0 added [ 41.861409] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 41.868780] team0: Port device team_slave_1 added [ 41.884975] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 41.903582] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 41.921250] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 41.939418] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 42.068134] bridge0: port 2(bridge_slave_1) entered blocking state [ 42.074594] bridge0: port 2(bridge_slave_1) entered forwarding state [ 42.081631] bridge0: port 1(bridge_slave_0) entered blocking state [ 42.088016] bridge0: port 1(bridge_slave_0) entered forwarding state [ 42.533710] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 42.539832] 8021q: adding VLAN 0 to HW filter on device bond0 [ 42.586510] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 42.619382] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 42.641578] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 42.647771] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 42.655496] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 42.699423] 8021q: adding VLAN 0 to HW filter on device team0 [ 42.984650] 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. [ 43.012160] kasan: CONFIG_KASAN_INLINE enabled [ 43.016902] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 43.024367] general protection fault: 0000 [#1] SMP KASAN [ 43.029911] CPU: 0 PID: 4743 Comm: syz-executor0 Not tainted 4.18.0+ #207 [ 43.036820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.046175] RIP: 0010:kvm_pv_send_ipi+0x582/0xaf0 [ 43.051005] 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 [ 43.069894] RSP: 0018:ffff8801d8bff028 EFLAGS: 00010206 [ 43.075240] RAX: 000000000000002f RBX: ffff8801d8bff190 RCX: ffffffff8118b074 [ 43.082491] RDX: 0000000000000072 RSI: ffffffff8118b0b8 RDI: 0000000000000390 [ 43.089741] RBP: ffff8801d8bff1b8 R08: ffff8801d8952640 R09: ffffed003b6046d6 [ 43.096992] R10: ffffed003b6046d6 R11: ffff8801db0236b3 R12: 000000000000000f [ 43.104243] R13: ffff8801d8bff110 R14: dffffc0000000000 R15: 0000000000000000 [ 43.111496] FS: 0000000000fc0940(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 43.119707] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.125568] CR2: 0000000000000000 CR3: 00000001bed89000 CR4: 00000000001426f0 [ 43.132820] Call Trace: [ 43.135449] ? __lock_acquire+0x7fc/0x5020 [ 43.139670] ? kvm_apic_set_irq+0x170/0x170 [ 43.143978] ? __lock_is_held+0xb5/0x140 [ 43.148019] ? save_stack+0x43/0xd0 [ 43.151647] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.157171] ? vmx_read_guest_seg_ar+0x221/0x270 [ 43.161919] kvm_emulate_hypercall+0x9d7/0xea0 [ 43.166486] ? kvm_fast_pio+0x4f0/0x4f0 [ 43.170441] ? graph_lock+0x170/0x170 [ 43.174224] ? vmx_vcpu_run+0x13f9/0x277b [ 43.178356] ? vmx_vcpu_run+0x13ed/0x277b [ 43.182482] ? vmx_vcpu_run+0x13f9/0x277b [ 43.186609] ? vmx_vcpu_run+0x13ed/0x277b [ 43.190745] ? vmx_vcpu_run+0x13f9/0x277b [ 43.194879] ? vmx_vcpu_run+0x13ed/0x277b [ 43.199007] ? vmx_vcpu_run+0x13f9/0x277b [ 43.203141] ? vmx_vcpu_run+0x13ed/0x277b [ 43.207272] ? print_usage_bug+0xc0/0xc0 [ 43.211322] ? vmx_vcpu_run+0x13ed/0x277b [ 43.215462] ? __lock_is_held+0xb5/0x140 [ 43.219506] ? __vmx_complete_interrupts+0x103/0x3e0 [ 43.224597] handle_vmcall+0x15/0x20 [ 43.228294] ? handle_io+0x100/0x100 [ 43.231995] vmx_handle_exit+0x2dd/0x1760 [ 43.236145] ? lock_acquire+0x1e4/0x4f0 [ 43.240106] ? vcpu_enter_guest+0x1285/0x61a0 [ 43.244637] ? vcpu_enter_guest+0x1227/0x61a0 [ 43.249114] ? handle_vmfunc+0x9d0/0x9d0 [ 43.253160] ? trace_hardirqs_on+0xbd/0x2c0 [ 43.257462] ? kvm_arch_vcpu_ioctl_run+0x373/0x16d0 [ 43.262463] vcpu_enter_guest+0x143c/0x61a0 [ 43.266770] ? kasan_check_write+0x14/0x20 [ 43.270987] ? kvm_set_msr_common+0x2680/0x2680 [ 43.275640] ? vmx_vcpu_load+0xad2/0xfe0 [ 43.279682] ? find_held_lock+0x36/0x1c0 [ 43.283726] ? handle_dr+0x8c0/0x8c0 [ 43.287422] ? graph_lock+0x170/0x170 [ 43.291211] ? lock_downgrade+0x8f0/0x8f0 [ 43.295349] ? __kasan_slab_free+0x11a/0x170 [ 43.299742] ? kasan_slab_free+0xe/0x10 [ 43.303707] ? __lock_is_held+0xb5/0x140 [ 43.307752] ? kvm_check_async_pf_completion+0x3a7/0x5c0 [ 43.313188] ? kvm_clear_async_pf_completion_queue+0x790/0x790 [ 43.319157] ? kvm_arch_dev_ioctl+0x610/0x610 [ 43.323637] ? preempt_notifier_dec+0x20/0x20 [ 43.328120] kvm_arch_vcpu_ioctl_run+0x373/0x16d0 [ 43.332962] ? kvm_arch_vcpu_ioctl_run+0x373/0x16d0 [ 43.337964] kvm_vcpu_ioctl+0x7b8/0x1280 [ 43.342011] ? kvm_uevent_notify_change.part.32+0x440/0x440 [ 43.347706] ? exit_robust_list+0x290/0x290 [ 43.352025] ? lockdep_hardirqs_on+0x421/0x5c0 [ 43.356590] ? trace_hardirqs_on+0xbd/0x2c0 [ 43.360895] ? rcu_is_watching+0x8c/0x150 [ 43.365024] ? call_rcu_sched+0x12/0x20 [ 43.368983] ? trace_hardirqs_off_caller+0x2b0/0x2b0 [ 43.374071] ? rcu_cleanup_dead_rnp+0x200/0x200 [ 43.378724] ? graph_lock+0x170/0x170 [ 43.382509] ? note_gp_changes+0x420/0x420 [ 43.386728] ? mnt_get_count+0x150/0x150 [ 43.390777] ? blkcg_maybe_throttle_current+0xa56/0x10c0 [ 43.396219] ? _raw_spin_unlock+0x22/0x30 [ 43.400362] ? blkcg_print_stat+0x1420/0x1420 [ 43.404847] ? _raw_spin_unlock_irq+0x27/0x70 [ 43.409341] ? _raw_spin_unlock_irq+0x27/0x70 [ 43.413826] ? kvm_uevent_notify_change.part.32+0x440/0x440 [ 43.419564] do_vfs_ioctl+0x1de/0x1720 [ 43.423433] ? task_work_run+0x1af/0x2a0 [ 43.427479] ? trace_hardirqs_off_caller+0x2b0/0x2b0 [ 43.432568] ? ioctl_preallocate+0x300/0x300 [ 43.436975] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.442495] ? __fget_light+0x2f7/0x440 [ 43.446449] ? fget_raw+0x20/0x20 [ 43.449883] ? trace_hardirqs_off+0xb8/0x2b0 [ 43.454275] ? __x64_sys_futex+0x47f/0x6a0 [ 43.458494] ? do_syscall_64+0x9a/0x820 [ 43.462449] ? do_syscall_64+0x9a/0x820 [ 43.466406] ? lockdep_hardirqs_on+0x421/0x5c0 [ 43.471468] ? security_file_ioctl+0x94/0xc0 [ 43.475982] ksys_ioctl+0xa9/0xd0 [ 43.479420] __x64_sys_ioctl+0x73/0xb0 [ 43.483290] do_syscall_64+0x1b9/0x820 [ 43.487180] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 43.492530] ? syscall_return_slowpath+0x5e0/0x5e0 [ 43.497443] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.502271] ? trace_hardirqs_on_caller+0x2b0/0x2b0 [ 43.507296] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 43.512309] ? prepare_exit_to_usermode+0x291/0x3b0 [ 43.517331] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.522174] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.527350] RIP: 0033:0x457089 [ 43.530528] 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 [ 43.549418] RSP: 002b:00007fff3ceb8998 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 43.557112] RAX: ffffffffffffffda RBX: 0000000000fc0914 RCX: 0000000000457089 [ 43.564367] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 43.571617] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 [ 43.578874] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 43.586190] R13: 00000000004cedf0 R14: 00000000004c54c9 R15: 0000000000000000 [ 43.593462] Modules linked in: [ 43.596653] Dumping ftrace buffer: [ 43.600168] (ftrace buffer empty) [ 43.604238] ---[ end trace c38044fa919274d9 ]--- [ 43.609050] RIP: 0010:kvm_pv_send_ipi+0x582/0xaf0 [ 43.613946] 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 [ 43.632904] RSP: 0018:ffff8801d8bff028 EFLAGS: 00010206 [ 43.638309] RAX: 000000000000002f RBX: ffff8801d8bff190 RCX: ffffffff8118b074 [ 43.645609] RDX: 0000000000000072 RSI: ffffffff8118b0b8 RDI: 0000000000000390 [ 43.652910] RBP: ffff8801d8bff1b8 R08: ffff8801d8952640 R09: ffffed003b6046d6 [ 43.660206] R10: ffffed003b6046d6 R11: ffff8801db0236b3 R12: 000000000000000f [ 43.667511] R13: ffff8801d8bff110 R14: dffffc0000000000 R15: 0000000000000000 [ 43.674804] FS: 0000000000fc0940(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 43.683050] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.688958] CR2: 0000000000000000 CR3: 00000001bed89000 CR4: 00000000001426f0 [ 43.696272] Kernel panic - not syncing: Fatal exception [ 43.701983] Dumping ftrace buffer: [ 43.705505] (ftrace buffer empty) [ 43.709216] Kernel Offset: disabled [ 43.712830] Rebooting in 86400 seconds..