[ OK ] Reached target Multi-User System. [ 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... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.49' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 62.764438][ T6871] 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. [ 62.816430][ T6871] ------------[ cut here ]------------ [ 62.821978][ T6871] WARNING: CPU: 1 PID: 6871 at arch/x86/kvm/vmx/vmx.c:4809 handle_exception_nmi+0x10e1/0x12d0 [ 62.832322][ T6871] Kernel panic - not syncing: panic_on_warn set ... [ 62.838944][ T6871] CPU: 1 PID: 6871 Comm: syz-executor893 Not tainted 5.9.0-rc7-syzkaller #0 [ 62.847591][ T6871] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.857622][ T6871] Call Trace: [ 62.860907][ T6871] dump_stack+0x198/0x1fd [ 62.865221][ T6871] panic+0x382/0x7fb [ 62.869292][ T6871] ? __warn_printk+0xf3/0xf3 [ 62.873878][ T6871] ? printk+0xba/0xed [ 62.877848][ T6871] ? log_store.cold+0x16/0x16 [ 62.882507][ T6871] ? __warn.cold+0x5/0x4b [ 62.886940][ T6871] ? __warn+0xd6/0x1f2 [ 62.890999][ T6871] ? handle_exception_nmi+0x10e1/0x12d0 [ 62.896527][ T6871] __warn.cold+0x20/0x4b [ 62.900748][ T6871] ? handle_exception_nmi+0x10e1/0x12d0 [ 62.906399][ T6871] report_bug+0x1bd/0x210 [ 62.910736][ T6871] handle_bug+0x38/0x90 [ 62.914884][ T6871] exc_invalid_op+0x14/0x40 [ 62.919387][ T6871] asm_exc_invalid_op+0x12/0x20 [ 62.924251][ T6871] RIP: 0010:handle_exception_nmi+0x10e1/0x12d0 [ 62.930380][ T6871] Code: 0f 84 16 f3 ff ff e8 3e 5d 5a 00 48 89 ef c7 85 ac 0e 00 00 00 00 00 00 e8 5c 87 f0 ff 41 89 c4 e9 fd f2 ff ff e8 1f 5d 5a 00 <0f> 0b e9 85 f8 ff ff e8 13 5d 5a 00 be f5 ff ff ff bf 01 00 00 00 [ 62.949991][ T6871] RSP: 0018:ffffc900054a7b58 EFLAGS: 00010293 [ 62.956045][ T6871] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff811bd9f5 [ 62.963995][ T6871] RDX: ffff8880a0bdc240 RSI: ffffffff811be171 RDI: 0000000000000001 [ 62.972042][ T6871] RBP: ffff888097e3c040 R08: 0000000000000001 R09: ffff888097e3c387 [ 62.980038][ T6871] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002 [ 62.988009][ T6871] R13: fffffffffffffff8 R14: ffff888097e3c380 R15: 0000000000000000 [ 62.996003][ T6871] ? handle_exception_nmi+0x965/0x12d0 [ 63.001474][ T6871] ? handle_exception_nmi+0x10e1/0x12d0 [ 63.007041][ T6871] ? handle_exception_nmi+0x10e1/0x12d0 [ 63.012613][ T6871] ? vmx_skip_emulated_instruction+0x250/0x250 [ 63.018772][ T6871] vmx_handle_exit+0x2a6/0x1510 [ 63.023613][ T6871] vcpu_enter_guest+0x18f4/0x3c20 [ 63.028628][ T6871] ? kvm_vcpu_reload_apic_access_page+0x80/0x80 [ 63.034860][ T6871] ? lock_release+0x8f0/0x8f0 [ 63.039536][ T6871] ? mark_held_locks+0x9f/0xe0 [ 63.044304][ T6871] ? lock_is_held_type+0xbb/0xf0 [ 63.049349][ T6871] ? kvm_load_guest_fpu+0xa4/0x3f0 [ 63.054440][ T6871] ? __local_bh_enable_ip+0x10f/0x1f0 [ 63.059925][ T6871] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 63.065914][ T6871] ? lock_is_held_type+0xbb/0xf0 [ 63.070873][ T6871] ? kvm_arch_vcpu_ioctl_run+0x440/0x1780 [ 63.076700][ T6871] kvm_arch_vcpu_ioctl_run+0x440/0x1780 [ 63.082235][ T6871] kvm_vcpu_ioctl+0x467/0xdf0 [ 63.086904][ T6871] ? kvm_gfn_to_hva_cache_init+0x1a0/0x1a0 [ 63.092691][ T6871] ? generic_block_fiemap+0x60/0x60 [ 63.097866][ T6871] ? __up_read+0x1a1/0x7b0 [ 63.102271][ T6871] ? _down_write_nest_lock+0x150/0x150 [ 63.107723][ T6871] ? __fget_files+0x294/0x400 [ 63.112396][ T6871] ? bpf_lsm_file_ioctl+0x5/0x10 [ 63.117315][ T6871] ? kvm_gfn_to_hva_cache_init+0x1a0/0x1a0 [ 63.123096][ T6871] __x64_sys_ioctl+0x193/0x200 [ 63.127850][ T6871] do_syscall_64+0x2d/0x70 [ 63.132275][ T6871] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 63.138244][ T6871] RIP: 0033:0x447f29 [ 63.142116][ T6871] Code: e8 9c af 02 00 48 83 c4 18 c3 0f 1f 80 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 0f 83 cb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 63.161700][ T6871] RSP: 002b:00007f09c843bd98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 63.170090][ T6871] RAX: ffffffffffffffda RBX: 00000000006dcc48 RCX: 0000000000447f29 [ 63.178049][ T6871] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 63.185996][ T6871] RBP: 00000000006dcc40 R08: 0000000000000000 R09: 0000000000000000 [ 63.193942][ T6871] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc4c [ 63.201898][ T6871] R13: c70f0568fbe1e1c4 R14: fec0008082100f41 R15: f32626e314640f66 [ 63.211357][ T6871] Kernel Offset: disabled [ 63.215764][ T6871] Rebooting in 86400 seconds..