[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 22.670110] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 25.730783] random: sshd: uninitialized urandom read (32 bytes read) [ 26.100196] random: sshd: uninitialized urandom read (32 bytes read) [ 26.631689] random: sshd: uninitialized urandom read (32 bytes read) [ 103.188275] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.22' (ECDSA) to the list of known hosts. [ 108.844479] random: sshd: uninitialized urandom read (32 bytes read) 2018/09/05 22:23:54 parsed 1 programs [ 110.004477] random: cc1: uninitialized urandom read (8 bytes read) 2018/09/05 22:23:56 executed programs: 0 [ 111.568068] IPVS: ftp: loaded support on port[0] = 21 [ 111.780294] bridge0: port 1(bridge_slave_0) entered blocking state [ 111.786780] bridge0: port 1(bridge_slave_0) entered disabled state [ 111.794311] device bridge_slave_0 entered promiscuous mode [ 111.811196] bridge0: port 2(bridge_slave_1) entered blocking state [ 111.817669] bridge0: port 2(bridge_slave_1) entered disabled state [ 111.824673] device bridge_slave_1 entered promiscuous mode [ 111.840313] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 111.856811] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 111.901281] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 111.921852] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 111.989364] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 111.996826] team0: Port device team_slave_0 added [ 112.012817] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 112.020209] team0: Port device team_slave_1 added [ 112.036222] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 112.054836] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 112.072497] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 112.090208] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 112.216297] bridge0: port 2(bridge_slave_1) entered blocking state [ 112.222796] bridge0: port 2(bridge_slave_1) entered forwarding state [ 112.229808] bridge0: port 1(bridge_slave_0) entered blocking state [ 112.236288] bridge0: port 1(bridge_slave_0) entered forwarding state [ 112.682773] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 112.689012] 8021q: adding VLAN 0 to HW filter on device bond0 [ 112.734866] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 112.744058] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 112.787230] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 112.793452] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 112.800903] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 112.839888] 8021q: adding VLAN 0 to HW filter on device team0 [ 113.111722] 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. [ 113.179048] kasan: CONFIG_KASAN_INLINE enabled [ 113.183813] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 113.191277] general protection fault: 0000 [#1] SMP KASAN [ 113.196987] CPU: 0 PID: 4932 Comm: syz-executor0 Not tainted 4.19.0-rc2+ #222 [ 113.204247] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 113.213738] RIP: 0010:kvm_pv_send_ipi+0x582/0xaf0 [ 113.218572] Code: e0 07 83 c0 01 88 85 97 fe ff ff e8 c8 1d 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 [ 113.237457] RSP: 0018:ffff8801d2e2f028 EFLAGS: 00010206 [ 113.242808] RAX: 0000000000000620 RBX: ffff8801d2e2f190 RCX: ffffffff8118b134 [ 113.250061] RDX: 0000000000000663 RSI: ffffffff8118b178 RDI: 0000000000003318 [ 113.257310] RBP: ffff8801d2e2f1b8 R08: ffff8801d3688140 R09: ffffed003b6046de [ 113.264558] R10: ffffed003b6046de R11: ffff8801db0236f3 R12: 0000000000000000 [ 113.271813] R13: ffff8801d2e2f110 R14: dffffc0000000000 R15: 0000000000000000 [ 113.279067] FS: 00007fa210436700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 113.287271] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 113.293139] CR2: 0000000000000000 CR3: 00000001b9bab000 CR4: 00000000001426f0 [ 113.300394] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 113.307656] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 113.314907] Call Trace: [ 113.317485] ? __lock_acquire+0x7fc/0x5020 [ 113.321706] ? kvm_apic_set_irq+0x170/0x170 [ 113.326076] ? __lock_is_held+0xb5/0x140 [ 113.330197] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 113.335724] ? vmx_read_guest_seg_ar+0x221/0x270 [ 113.340465] kvm_emulate_hypercall+0x9d7/0xea0 [ 113.345076] ? kvm_fast_pio+0x4f0/0x4f0 [ 113.349048] ? graph_lock+0x170/0x170 [ 113.352835] ? vmx_vcpu_run+0x13f9/0x277b [ 113.356972] ? vmx_vcpu_run+0x13ed/0x277b [ 113.361106] ? vmx_vcpu_run+0x13f9/0x277b [ 113.365236] ? vmx_vcpu_run+0x13ed/0x277b [ 113.369566] ? vmx_vcpu_run+0x13f9/0x277b [ 113.373709] ? vmx_vcpu_run+0x13ed/0x277b [ 113.377908] ? vmx_vcpu_run+0x13f9/0x277b [ 113.382052] ? vmx_vcpu_run+0x13ed/0x277b [ 113.386195] ? print_usage_bug+0xc0/0xc0 [ 113.390242] ? vmx_vcpu_run+0x13ed/0x277b [ 113.394382] ? __lock_is_held+0xb5/0x140 [ 113.398540] ? __vmx_complete_interrupts+0x103/0x3e0 [ 113.403690] handle_vmcall+0x15/0x20 [ 113.407400] ? handle_io+0x100/0x100 [ 113.411097] vmx_handle_exit+0x2dd/0x1760 [ 113.415230] ? lock_acquire+0x1e4/0x4f0 [ 113.419193] ? vcpu_enter_guest+0x1285/0x61a0 [ 113.423676] ? vcpu_enter_guest+0x1227/0x61a0 [ 113.428216] ? handle_vmfunc+0x9d0/0x9d0 [ 113.432386] ? trace_hardirqs_on+0xbd/0x2c0 [ 113.436735] ? kvm_arch_vcpu_ioctl_run+0x373/0x16d0 [ 113.441743] vcpu_enter_guest+0x143c/0x61a0 [ 113.446050] ? kvm_set_msr_common+0x2680/0x2680 [ 113.450701] ? vmx_vcpu_load+0xad2/0xfe0 [ 113.454784] ? handle_dr+0x8c0/0x8c0 [ 113.458490] ? graph_lock+0x170/0x170 [ 113.462280] ? __init_waitqueue_head+0x9e/0x150 [ 113.466943] ? __lock_is_held+0xb5/0x140 [ 113.470994] ? kvm_check_async_pf_completion+0x3a7/0x5c0 [ 113.476433] ? kvm_clear_async_pf_completion_queue+0x790/0x790 [ 113.482392] ? kvm_arch_dev_ioctl+0x610/0x610 [ 113.486869] ? preempt_notifier_dec+0x20/0x20 [ 113.491355] kvm_arch_vcpu_ioctl_run+0x373/0x16d0 [ 113.496258] ? kvm_arch_vcpu_ioctl_run+0x373/0x16d0 [ 113.501272] kvm_vcpu_ioctl+0x7b8/0x1280 [ 113.505320] ? kvm_uevent_notify_change.part.32+0x440/0x440 [ 113.511011] ? find_held_lock+0x36/0x1c0 [ 113.515054] ? lock_downgrade+0x8f0/0x8f0 [ 113.519190] ? kasan_check_read+0x11/0x20 [ 113.523319] ? rcu_is_watching+0x8c/0x150 [ 113.527453] ? rcu_cleanup_dead_rnp+0x200/0x200 [ 113.532115] ? __fget+0x4d5/0x740 [ 113.535559] ? ksys_dup3+0x690/0x690 [ 113.539267] ? _raw_spin_unlock+0x22/0x30 [ 113.543400] ? put_unused_fd+0x62/0x70 [ 113.547272] ? __do_sys_perf_event_open+0x7bb/0x2f30 [ 113.552362] ? kvm_uevent_notify_change.part.32+0x440/0x440 [ 113.558065] do_vfs_ioctl+0x1de/0x1720 [ 113.561947] ? ioctl_preallocate+0x300/0x300 [ 113.566340] ? __fget_light+0x2f7/0x440 [ 113.570306] ? __schedule+0x1df0/0x1df0 [ 113.574272] ? fget_raw+0x20/0x20 [ 113.577722] ? __x64_sys_futex+0x47f/0x6a0 [ 113.581949] ? do_syscall_64+0x9a/0x820 [ 113.585917] ? do_syscall_64+0x9a/0x820 [ 113.589881] ? lockdep_hardirqs_on+0x421/0x5c0 [ 113.594457] ? security_file_ioctl+0x94/0xc0 [ 113.598850] ksys_ioctl+0xa9/0xd0 [ 113.602325] __x64_sys_ioctl+0x73/0xb0 [ 113.606202] do_syscall_64+0x1b9/0x820 [ 113.610112] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 113.615473] ? syscall_return_slowpath+0x5e0/0x5e0 [ 113.620508] ? trace_hardirqs_on_caller+0x2b0/0x2b0 [ 113.625511] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 113.630511] ? recalc_sigpending_tsk+0x180/0x180 [ 113.635316] ? kasan_check_write+0x14/0x20 [ 113.639617] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 113.644456] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 113.649635] RIP: 0033:0x457099 [ 113.652861] 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 [ 113.671752] RSP: 002b:00007fa210435c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 113.679448] RAX: ffffffffffffffda RBX: 00007fa2104366d4 RCX: 0000000000457099 [ 113.686704] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 113.693993] RBP: 0000000000930140 R08: 0000000000000000 R09: 0000000000000000 [ 113.701253] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 113.708508] R13: 00000000004cf730 R14: 00000000004c59b9 R15: 0000000000000001 [ 113.715763] Modules linked in: [ 113.718942] Dumping ftrace buffer: [ 113.722460] (ftrace buffer empty) [ 113.726988] ---[ end trace 8dc13e1d26e9351a ]--- [ 113.731876] RIP: 0010:kvm_pv_send_ipi+0x582/0xaf0 [ 113.736854] Code: e0 07 83 c0 01 88 85 97 fe ff ff e8 c8 1d 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 [ 113.756068] RSP: 0018:ffff8801d2e2f028 EFLAGS: 00010206 [ 113.761469] RAX: 0000000000000620 RBX: ffff8801d2e2f190 RCX: ffffffff8118b134 [ 113.768756] RDX: 0000000000000663 RSI: ffffffff8118b178 RDI: 0000000000003318 [ 113.776194] RBP: ffff8801d2e2f1b8 R08: ffff8801d3688140 R09: ffffed003b6046de [ 113.783794] R10: ffffed003b6046de R11: ffff8801db0236f3 R12: 0000000000000000 [ 113.791195] R13: ffff8801d2e2f110 R14: dffffc0000000000 R15: 0000000000000000 [ 113.798489] FS: 00007fa210436700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 113.806874] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 113.812777] CR2: 0000000000000000 CR3: 00000001b9bab000 CR4: 00000000001426f0 [ 113.820205] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 113.827551] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 113.834930] Kernel panic - not syncing: Fatal exception [ 113.840820] Dumping ftrace buffer: [ 113.844486] (ftrace buffer empty) [ 113.848184] Kernel Offset: disabled [ 113.851803] Rebooting in 86400 seconds..