[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.6' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 32.850278] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. [ 32.884489] WARNING: CPU: 0 PID: 8064 at arch/x86/kvm/vmx.c:7091 handle_exception+0x747/0xca0 [ 32.893224] Kernel panic - not syncing: panic_on_warn set ... [ 32.893224] [ 32.900575] CPU: 0 PID: 8064 Comm: syz-executor292 Not tainted 4.19.211-syzkaller #0 [ 32.908440] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.917792] Call Trace: [ 32.920367] dump_stack+0x1fc/0x2ef [ 32.923979] panic+0x26a/0x50e [ 32.927162] ? __warn_printk+0xf3/0xf3 [ 32.931033] ? handle_exception+0x747/0xca0 [ 32.935337] ? __probe_kernel_read+0x130/0x1b0 [ 32.939900] ? __warn.cold+0x5/0x5a [ 32.943505] ? __warn+0xe4/0x200 [ 32.946854] ? handle_exception+0x747/0xca0 [ 32.951176] __warn.cold+0x20/0x5a [ 32.954700] ? handle_exception+0x747/0xca0 [ 32.959007] report_bug+0x262/0x2b0 [ 32.962618] do_error_trap+0x1d7/0x310 [ 32.966490] ? math_error+0x310/0x310 [ 32.970278] ? __lock_acquire+0x6de/0x3ff0 [ 32.974495] ? error_entry+0x72/0xd0 [ 32.978191] ? trace_hardirqs_off_caller+0x6e/0x210 [ 32.983190] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.988030] invalid_op+0x14/0x20 [ 32.991467] RIP: 0010:handle_exception+0x747/0xca0 [ 32.996382] Code: ff 89 de e8 2b b7 49 00 85 db 75 20 e8 b2 b5 49 00 0f b6 1d 42 f6 0d 0a 31 ff 89 de e8 d2 b6 49 00 84 db 74 07 e8 99 b5 49 00 <0f> 0b e8 92 b5 49 00 4c 89 e2 44 89 ee 45 31 c0 31 c9 48 89 ef e8 [ 33.015276] RSP: 0018:ffff88809578f938 EFLAGS: 00010293 [ 33.020621] RAX: ffff8880b257c340 RBX: 0000000000000001 RCX: ffffffff8118cfce [ 33.027878] RDX: 0000000000000000 RSI: ffffffff8118cfd7 RDI: 0000000000000001 [ 33.035133] RBP: ffff888098130040 R08: 0000000000000000 R09: 0000000000000000 [ 33.042387] R10: 0000000000000001 R11: 0000000000000000 R12: 00000000a0000975 [ 33.049651] R13: 0000000000000000 R14: 0000000080000300 R15: 0000000000000000 [ 33.056912] ? handle_exception+0x73e/0xca0 [ 33.061230] ? handle_exception+0x747/0xca0 [ 33.065535] ? handle_exception+0x747/0xca0 [ 33.069836] ? handle_cpuid+0x20/0x20 [ 33.073622] vmx_handle_exit+0x26c/0xf90 [ 33.077681] ? lock_acquire+0x170/0x3c0 [ 33.081648] ? kvm_arch_vcpu_ioctl_run+0x262d/0x6f70 [ 33.086734] ? kvm_arch_vcpu_ioctl_run+0x25c4/0x6f70 [ 33.091835] kvm_arch_vcpu_ioctl_run+0x27b2/0x6f70 [ 33.096756] ? kvm_arch_vcpu_runnable+0x690/0x690 [ 33.101583] ? __mutex_unlock_slowpath+0xea/0x610 [ 33.106406] ? check_preemption_disabled+0x41/0x280 [ 33.111410] ? kvm_vcpu_ioctl+0x493/0xe10 [ 33.115536] kvm_vcpu_ioctl+0x493/0xe10 [ 33.119493] ? kvm_vm_ioctl_check_extension_generic+0xb0/0xb0 [ 33.125424] ? do_huge_pmd_anonymous_page+0x935/0x1e60 [ 33.130693] ? prep_transhuge_page+0xa0/0xa0 [ 33.135105] ? mark_held_locks+0xf0/0xf0 [ 33.139160] ? __handle_mm_fault+0xf34/0x41c0 [ 33.143644] ? kvm_vm_ioctl_check_extension_generic+0xb0/0xb0 [ 33.149515] do_vfs_ioctl+0xcdb/0x12e0 [ 33.153393] ? ioctl_preallocate+0x200/0x200 [ 33.157786] ? __do_page_fault+0x6d1/0xd60 [ 33.162009] ? lock_downgrade+0x720/0x720 [ 33.166141] ? check_preemption_disabled+0x41/0x280 [ 33.171140] ? kvm_on_user_return+0x2e6/0x3f0 [ 33.175620] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.180182] ? kvm_on_user_return+0x1cd/0x3f0 [ 33.184661] ksys_ioctl+0x9b/0xc0 [ 33.188097] __x64_sys_ioctl+0x6f/0xb0 [ 33.191964] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.196528] do_syscall_64+0xf9/0x620 [ 33.200314] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.205484] RIP: 0033:0x7feea3547d99 [ 33.209181] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 33.228066] RSP: 002b:00007ffc3d5644b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 33.235755] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007feea3547d99 [ 33.243006] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 33.250258] RBP: 00007feea350b890 R08: 0000000000000000 R09: 0000000000000000 [ 33.257510] R10: 0000000000000000 R11: 0000000000000246 R12: 00007feea350b920 [ 33.264760] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 33.272398] Kernel Offset: disabled [ 33.276057] Rebooting in 86400 seconds..