Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.236' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 32.247488] 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. [ 32.304177] hrtimer: interrupt took 55552 ns executing program executing program executing program executing program executing program executing program executing program [ 32.609904] kvm: emulating exchange as write [ 32.678227] ------------[ cut here ]------------ [ 32.683537] WARNING: CPU: 0 PID: 8189 at arch/x86/kvm/x86.c:8115 kvm_arch_vcpu_ioctl_run.cold+0x29/0x48 [ 32.693067] Kernel panic - not syncing: panic_on_warn set ... [ 32.693067] [ 32.700435] CPU: 0 PID: 8189 Comm: syz-executor155 Not tainted 4.19.211-syzkaller #0 [ 32.708297] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 32.717633] Call Trace: [ 32.720213] dump_stack+0x1fc/0x2ef [ 32.723829] panic+0x26a/0x50e [ 32.727010] ? __warn_printk+0xf3/0xf3 [ 32.730901] ? kvm_arch_vcpu_ioctl_run.cold+0x29/0x48 [ 32.736081] ? __probe_kernel_read+0x130/0x1b0 [ 32.740655] ? __warn.cold+0x5/0x5a [ 32.744267] ? __warn+0xe4/0x200 [ 32.747637] ? kvm_arch_vcpu_ioctl_run.cold+0x29/0x48 [ 32.752830] __warn.cold+0x20/0x5a [ 32.756362] ? kvm_arch_vcpu_ioctl_run.cold+0x29/0x48 [ 32.761555] report_bug+0x262/0x2b0 [ 32.765172] do_error_trap+0x1d7/0x310 [ 32.769045] ? math_error+0x310/0x310 [ 32.772853] ? rcu_nmi_exit+0xb3/0x180 [ 32.776745] ? retint_kernel+0x2d/0x2d [ 32.780638] ? error_entry+0x72/0xd0 [ 32.784345] ? trace_hardirqs_off_caller+0x6e/0x210 [ 32.789357] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.794199] invalid_op+0x14/0x20 [ 32.797648] RIP: 0010:kvm_arch_vcpu_ioctl_run.cold+0x29/0x48 [ 32.803451] Code: f9 e8 0b a8 70 f9 48 c7 c7 a0 23 62 88 e8 6a d9 01 00 0f 0b e9 46 aa 1b f9 e8 f3 a7 70 f9 48 c7 c7 a0 23 62 88 e8 52 d9 01 00 <0f> 0b e9 95 53 1b f9 e8 db a7 70 f9 48 c7 c7 a0 23 62 88 e8 3a d9 [ 32.822339] RSP: 0018:ffff8880ab817a10 EFLAGS: 00010286 [ 32.827687] RAX: 0000000000000024 RBX: 0000000000000001 RCX: 0000000000000000 [ 32.834940] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1015702f34 [ 32.842195] RBP: ffff8880ab817bb0 R08: 0000000000000024 R09: 0000000000000000 [ 32.849447] R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809971f000 [ 32.856700] R13: ffff8880942b82c0 R14: 0000000000000000 R15: 0000000000000000 [ 32.863964] ? vprintk_func+0x81/0x180 [ 32.867853] ? mark_held_locks+0xa6/0xf0 [ 32.871915] ? kvm_arch_vcpu_runnable+0x690/0x690 [ 32.876745] ? synchronize_rcu_expedited+0xa0/0xa0 [ 32.881661] ? lock_downgrade+0x720/0x720 [ 32.885795] ? check_preemption_disabled+0x41/0x280 [ 32.890798] ? check_preemption_disabled+0x41/0x280 [ 32.895807] ? kvm_vcpu_ioctl+0x493/0xe10 [ 32.899943] kvm_vcpu_ioctl+0x493/0xe10 [ 32.903906] ? kvm_vm_ioctl_check_extension_generic+0xb0/0xb0 [ 32.909781] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 32.914525] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 32.919111] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 32.923941] ? rcu_nmi_exit+0xb3/0x180 [ 32.927814] ? retint_kernel+0x2d/0x2d [ 32.931694] ? kvm_vm_ioctl_check_extension_generic+0xb0/0xb0 [ 32.937564] ? do_vfs_ioctl+0xf74/0x12e0 [ 32.941613] ? kvm_vm_ioctl_check_extension_generic+0xb0/0xb0 [ 32.947484] do_vfs_ioctl+0xcdb/0x12e0 [ 32.951358] ? lock_downgrade+0x720/0x720 [ 32.955494] ? check_preemption_disabled+0x41/0x280 [ 32.960495] ? ioctl_preallocate+0x200/0x200 [ 32.964915] ? __fget+0x356/0x510 [ 32.968369] ? do_dup2+0x450/0x450 [ 32.971899] ? __se_sys_futex+0x298/0x3b0 [ 32.976038] ksys_ioctl+0x9b/0xc0 [ 32.979480] __x64_sys_ioctl+0x6f/0xb0 [ 32.983355] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 32.987923] do_syscall_64+0xf9/0x620 [ 32.991712] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 32.996885] RIP: 0033:0x7febad88b909 [ 33.000584] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 33.019467] RSP: 002b:00007febad81a2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 33.027174] RAX: ffffffffffffffda RBX: 00007febad914430 RCX: 00007febad88b909 [ 33.034428] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 33.041754] RBP: 00007febad91443c R08: 0000000000000000 R09: 0000000000000000 [ 33.049006] R10: 0000000000000000 R11: 0000000000000246 R12: 00007febad8e10b8 [ 33.056268] R13: 6d766b2f7665642f R14: 65732f636f72702f R15: 00007febad914438 [ 33.063862] Kernel Offset: disabled [ 33.067540] Rebooting in 86400 seconds..