[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.96' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.370473] 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. [ 34.405485] WARNING: CPU: 0 PID: 8121 at arch/x86/kvm/vmx.c:7091 handle_exception+0x747/0xca0 [ 34.414232] Kernel panic - not syncing: panic_on_warn set ... [ 34.414232] [ 34.421580] CPU: 0 PID: 8121 Comm: syz-executor270 Not tainted 4.19.211-syzkaller #0 [ 34.429437] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.438785] Call Trace: [ 34.441386] dump_stack+0x1fc/0x2ef [ 34.444998] panic+0x26a/0x50e [ 34.448173] ? __warn_printk+0xf3/0xf3 [ 34.452043] ? handle_exception+0x747/0xca0 [ 34.456344] ? __probe_kernel_read+0x130/0x1b0 [ 34.460905] ? __warn.cold+0x5/0x5a [ 34.464512] ? __warn+0xe4/0x200 [ 34.467858] ? handle_exception+0x747/0xca0 [ 34.472160] __warn.cold+0x20/0x5a [ 34.475695] ? handle_exception+0x747/0xca0 [ 34.480013] report_bug+0x262/0x2b0 [ 34.483624] do_error_trap+0x1d7/0x310 [ 34.487494] ? math_error+0x310/0x310 [ 34.491278] ? __lock_acquire+0x6de/0x3ff0 [ 34.495495] ? error_entry+0x72/0xd0 [ 34.499190] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.504190] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.509032] invalid_op+0x14/0x20 [ 34.512482] RIP: 0010:handle_exception+0x747/0xca0 [ 34.517394] 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 [ 34.536377] RSP: 0018:ffff888095507938 EFLAGS: 00010293 [ 34.541722] RAX: ffff8880b2c142c0 RBX: 0000000000000001 RCX: ffffffff8118cfce [ 34.548981] RDX: 0000000000000000 RSI: ffffffff8118cfd7 RDI: 0000000000000001 [ 34.556243] RBP: ffff888095400040 R08: 0000000000000000 R09: 0000000000000000 [ 34.563497] R10: 0000000000000001 R11: 0000000000000000 R12: 00000000a0000975 [ 34.570748] R13: 0000000000000000 R14: 0000000080000300 R15: 0000000000000000 [ 34.578128] ? handle_exception+0x73e/0xca0 [ 34.582434] ? handle_exception+0x747/0xca0 [ 34.586749] ? handle_exception+0x747/0xca0 [ 34.591051] ? handle_cpuid+0x20/0x20 [ 34.594832] vmx_handle_exit+0x26c/0xf90 [ 34.598907] ? lock_acquire+0x170/0x3c0 [ 34.602877] ? kvm_arch_vcpu_ioctl_run+0x262d/0x6f70 [ 34.607974] ? kvm_arch_vcpu_ioctl_run+0x25c4/0x6f70 [ 34.613057] kvm_arch_vcpu_ioctl_run+0x27b2/0x6f70 [ 34.617984] ? kvm_arch_vcpu_runnable+0x690/0x690 [ 34.622821] ? __mutex_unlock_slowpath+0xea/0x610 [ 34.627649] ? check_preemption_disabled+0x41/0x280 [ 34.632652] ? kvm_vcpu_ioctl+0x493/0xe10 [ 34.636793] kvm_vcpu_ioctl+0x493/0xe10 [ 34.640750] ? kvm_vm_ioctl_check_extension_generic+0xb0/0xb0 [ 34.646618] ? do_huge_pmd_anonymous_page+0x935/0x1e60 [ 34.656221] ? prep_transhuge_page+0xa0/0xa0 [ 34.660625] ? mark_held_locks+0xf0/0xf0 [ 34.664679] ? __handle_mm_fault+0xf34/0x41c0 [ 34.669167] ? kvm_vm_ioctl_check_extension_generic+0xb0/0xb0 [ 34.675051] do_vfs_ioctl+0xcdb/0x12e0 [ 34.678921] ? ioctl_preallocate+0x200/0x200 [ 34.683311] ? __do_page_fault+0x6d1/0xd60 [ 34.687531] ? lock_downgrade+0x720/0x720 [ 34.691663] ? check_preemption_disabled+0x41/0x280 [ 34.696673] ? kvm_on_user_return+0x2e6/0x3f0 [ 34.701159] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.705723] ? kvm_on_user_return+0x1cd/0x3f0 [ 34.710201] ksys_ioctl+0x9b/0xc0 [ 34.713634] __x64_sys_ioctl+0x6f/0xb0 [ 34.717502] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.722080] do_syscall_64+0xf9/0x620 [ 34.725888] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.731066] RIP: 0033:0x7f951458d1a9 [ 34.734776] 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 [ 34.753743] RSP: 002b:00007ffca6e1d6d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 34.761446] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f951458d1a9 [ 34.768697] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 34.775967] RBP: 00007f9514550ca0 R08: 0000000000000000 R09: 0000000000000000 [ 34.783318] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9514550d30 [ 34.790570] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.798140] Kernel Offset: disabled [ 34.801820] Rebooting in 86400 seconds..