[ 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 '10.128.1.37' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 37.785364] 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. [ 37.814824] ------------[ cut here ]------------ [ 37.819633] WARNING: CPU: 0 PID: 7996 at arch/x86/kvm/vmx.c:6387 handle_exception+0x430/0xa30 [ 37.828275] Kernel panic - not syncing: panic_on_warn set ... [ 37.828275] [ 37.835612] CPU: 0 PID: 7996 Comm: syz-executor320 Not tainted 4.14.302-syzkaller #0 [ 37.843466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 37.852794] Call Trace: [ 37.855367] dump_stack+0x1b2/0x281 [ 37.858971] panic+0x1f9/0x42d [ 37.862135] ? add_taint.cold+0x16/0x16 [ 37.866097] ? handle_exception+0x430/0xa30 [ 37.870393] ? handle_exception+0x430/0xa30 [ 37.874688] __warn.cold+0x20/0x44 [ 37.878202] ? ist_end_non_atomic+0x10/0x10 [ 37.882497] ? handle_exception+0x430/0xa30 [ 37.886790] report_bug+0x208/0x250 [ 37.890394] do_error_trap+0x195/0x2d0 [ 37.894260] ? math_error+0x2d0/0x2d0 [ 37.898035] ? vmx_vcpu_run+0xf3c/0x2240 [ 37.902067] ? vmx_vcpu_run+0xf30/0x2240 [ 37.906101] ? vmx_vcpu_run+0xf3c/0x2240 [ 37.910139] ? vmx_vcpu_run+0xf30/0x2240 [ 37.914175] ? vmx_vcpu_run+0xf3c/0x2240 [ 37.918211] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.923031] invalid_op+0x1b/0x40 [ 37.926458] RIP: 0010:handle_exception+0x430/0xa30 [ 37.931357] RSP: 0018:ffff88808f32fa58 EFLAGS: 00010297 [ 37.936698] RAX: ffff8880b32d6180 RBX: 0000000080000b0e RCX: 0000000000000000 [ 37.943940] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff88808f3c55e0 [ 37.951183] RBP: ffff88808f3c0040 R08: 0000000000000000 R09: 000000000002057c [ 37.958425] R10: ffff8880b32d6a30 R11: ffff8880b32d6180 R12: 0000000020c2c748 [ 37.965668] R13: 0000000000000000 R14: ffff8880aa662000 R15: 0000000080000300 [ 37.972925] ? handle_exception+0x430/0xa30 [ 37.977221] ? handle_cpuid+0x20/0x20 [ 37.981002] vmx_handle_exit+0x1f8/0x14b0 [ 37.985125] ? kvm_arch_vcpu_ioctl_run+0x1c18/0x5c80 [ 37.990201] kvm_arch_vcpu_ioctl_run+0x1dc7/0x5c80 [ 37.995107] ? vcpu_load+0x18/0x90 [ 37.998625] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 38.004054] ? kvm_arch_vcpu_runnable+0x530/0x530 [ 38.008868] ? lock_acquire+0x170/0x3f0 [ 38.012814] ? lock_downgrade+0x740/0x740 [ 38.016937] ? kvm_vcpu_ioctl+0x417/0xca0 [ 38.021057] kvm_vcpu_ioctl+0x417/0xca0 [ 38.025005] ? kvm_vcpu_fault+0x320/0x320 [ 38.029126] ? write_ldt+0x35a/0x560 [ 38.032811] ? write_ldt+0x3a7/0x560 [ 38.036501] ? lock_downgrade+0x740/0x740 [ 38.040623] ? cpumask_next_and+0xa7/0xd0 [ 38.044753] ? write_ldt+0x3b8/0x560 [ 38.048438] ? kvm_vcpu_fault+0x320/0x320 [ 38.052559] do_vfs_ioctl+0x75a/0xff0 [ 38.056337] ? ioctl_preallocate+0x1a0/0x1a0 [ 38.060717] ? up_write+0x17/0x60 [ 38.064144] ? write_ldt+0x3b8/0x560 [ 38.067830] ? finalize_ldt_struct.isra.0+0x60/0x60 [ 38.072821] ? _raw_spin_unlock_irq+0x5a/0x80 [ 38.077289] ? task_work_run+0xfd/0x190 [ 38.081240] ? security_file_ioctl+0x83/0xb0 [ 38.085622] SyS_ioctl+0x7f/0xb0 [ 38.088964] ? do_vfs_ioctl+0xff0/0xff0 [ 38.092913] do_syscall_64+0x1d5/0x640 [ 38.096776] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 38.101938] RIP: 0033:0x7f077258edc9 [ 38.105622] RSP: 002b:00007fff444cef08 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 38.113303] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f077258edc9 [ 38.120546] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 38.127788] RBP: 00007f07725528c0 R08: 0000000000000000 R09: 0000000000000000 [ 38.135127] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0772552950 [ 38.142371] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 38.149908] Kernel Offset: disabled [ 38.153559] Rebooting in 86400 seconds..