[ OK ] Reached target Graphical Interface. 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 '10.128.0.209' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 162.300302] 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. [ 162.358931] hrtimer: interrupt took 53673 ns [ 162.439341] kvm: emulating exchange as write executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 165.054035] ------------[ cut here ]------------ [ 165.059924] WARNING: CPU: 0 PID: 8561 at arch/x86/kvm/x86.c:8115 kvm_arch_vcpu_ioctl_run.cold+0x29/0x48 [ 165.069467] Kernel panic - not syncing: panic_on_warn set ... [ 165.069467] [ 165.076846] CPU: 0 PID: 8561 Comm: syz-executor434 Not tainted 4.19.211-syzkaller #0 [ 165.084731] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 165.094088] Call Trace: [ 165.096684] dump_stack+0x1fc/0x2ef [ 165.100315] panic+0x26a/0x50e [ 165.103508] ? __warn_printk+0xf3/0xf3 [ 165.107400] ? kvm_arch_vcpu_ioctl_run.cold+0x29/0x48 [ 165.112593] ? __probe_kernel_read+0x130/0x1b0 [ 165.117180] ? __warn.cold+0x5/0x5a [ 165.120809] ? __warn+0xe4/0x200 [ 165.124175] ? kvm_arch_vcpu_ioctl_run.cold+0x29/0x48 [ 165.129372] __warn.cold+0x20/0x5a [ 165.132918] ? kvm_arch_vcpu_ioctl_run.cold+0x29/0x48 [ 165.138143] report_bug+0x262/0x2b0 [ 165.142733] do_error_trap+0x1d7/0x310 [ 165.146627] ? math_error+0x310/0x310 [ 165.150438] ? __irq_work_queue_local+0x101/0x160 [ 165.155289] ? irq_work_queue+0x29/0x80 [ 165.159275] ? error_entry+0x72/0xd0 [ 165.162997] ? trace_hardirqs_off_caller+0x6e/0x210 [ 165.168029] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 165.172878] invalid_op+0x14/0x20 [ 165.176334] RIP: 0010:kvm_arch_vcpu_ioctl_run.cold+0x29/0x48 [ 165.182126] 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 [ 165.201022] RSP: 0018:ffff88809bf4fa10 EFLAGS: 00010286 [ 165.206389] RAX: 0000000000000024 RBX: 0000000000000001 RCX: 0000000000000000 [ 165.213655] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed10137e9f34 [ 165.221014] RBP: ffff88809bf4fbb0 R08: 0000000000000024 R09: 0000000000000000 [ 165.228274] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880aedb5000 [ 165.235643] R13: ffff88809c5d8f40 R14: 0000000000000000 R15: 0000000000000000 [ 165.242936] ? vprintk_func+0x81/0x180 [ 165.246829] ? do_raw_spin_unlock+0x171/0x230 [ 165.251328] ? _raw_spin_unlock+0x29/0x40 [ 165.255478] ? __mutex_lock+0x368/0x1190 [ 165.259550] ? kvm_arch_vcpu_runnable+0x690/0x690 [ 165.264395] ? synchronize_rcu_expedited+0xa0/0xa0 [ 165.269322] ? lock_downgrade+0x720/0x720 [ 165.273467] ? check_preemption_disabled+0x41/0x280 [ 165.278479] ? check_preemption_disabled+0x41/0x280 [ 165.283492] ? kvm_vcpu_ioctl+0x493/0xe10 [ 165.287633] kvm_vcpu_ioctl+0x493/0xe10 [ 165.291601] ? kvm_vm_ioctl_check_extension_generic+0xb0/0xb0 [ 165.297589] ? mark_held_locks+0xf0/0xf0 [ 165.301647] ? __lock_acquire+0x6de/0x3ff0 [ 165.305885] ? __lock_acquire+0x6de/0x3ff0 [ 165.310126] ? kvm_vm_ioctl_check_extension_generic+0xb0/0xb0 [ 165.316034] do_vfs_ioctl+0xcdb/0x12e0 [ 165.319923] ? lock_downgrade+0x720/0x720 [ 165.324936] ? check_preemption_disabled+0x41/0x280 [ 165.329959] ? ioctl_preallocate+0x200/0x200 [ 165.334537] ? __fget+0x356/0x510 [ 165.337987] ? do_dup2+0x450/0x450 [ 165.341616] ? lock_acquire+0x170/0x3c0 [ 165.345582] ? finish_task_switch+0x118/0x760 [ 165.350076] ksys_ioctl+0x9b/0xc0 [ 165.353529] __x64_sys_ioctl+0x6f/0xb0 [ 165.357429] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 165.362032] do_syscall_64+0xf9/0x620 [ 165.365842] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 165.371027] RIP: 0033:0x7ff00d1e49e9 [ 165.374735] 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 [ 165.393626] RSP: 002b:00007ff00d172208 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 165.401415] RAX: ffffffffffffffda RBX: 00007ff00d26d438 RCX: 00007ff00d1e49e9 [ 165.408680] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 165.415940] RBP: 00007ff00d26d430 R08: 00007ff00d172700 R09: 0000000000000000 [ 165.423206] R10: 00007ff00d172700 R11: 0000000000000246 R12: 00007ff00d26d43c [ 165.430469] R13: 00007ffdd56b3d5f R14: 00007ff00d172300 R15: 0000000000022000 [ 165.438107] Kernel Offset: disabled [ 165.441785] Rebooting in 86400 seconds..