[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ 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... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.40' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 62.880804][ T6875] 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. [ 62.933828][ T6875] ------------[ cut here ]------------ [ 62.939948][ T6875] WARNING: CPU: 0 PID: 6875 at arch/x86/kvm/vmx/vmx.c:4809 handle_exception_nmi+0x10e1/0x12d0 [ 62.950819][ T6875] Kernel panic - not syncing: panic_on_warn set ... [ 62.957419][ T6875] CPU: 0 PID: 6875 Comm: syz-executor618 Not tainted 5.9.0-rc7-syzkaller #0 [ 62.966085][ T6875] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.976355][ T6875] Call Trace: [ 62.979662][ T6875] dump_stack+0x198/0x1fd [ 62.984005][ T6875] panic+0x382/0x7fb [ 62.987910][ T6875] ? __warn_printk+0xf3/0xf3 [ 62.992507][ T6875] ? printk+0xba/0xed [ 62.996513][ T6875] ? log_store.cold+0x16/0x16 [ 63.001196][ T6875] ? __warn.cold+0x5/0x4b [ 63.005554][ T6875] ? __warn+0xd6/0x1f2 [ 63.009662][ T6875] ? handle_exception_nmi+0x10e1/0x12d0 [ 63.015408][ T6875] __warn.cold+0x20/0x4b [ 63.019678][ T6875] ? handle_exception_nmi+0x10e1/0x12d0 [ 63.025243][ T6875] report_bug+0x1bd/0x210 [ 63.029627][ T6875] handle_bug+0x38/0x90 [ 63.033793][ T6875] exc_invalid_op+0x14/0x40 [ 63.038298][ T6875] asm_exc_invalid_op+0x12/0x20 [ 63.043136][ T6875] RIP: 0010:handle_exception_nmi+0x10e1/0x12d0 [ 63.049268][ T6875] 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 [ 63.069840][ T6875] RSP: 0018:ffffc90005547b58 EFLAGS: 00010293 [ 63.075897][ T6875] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff811bd9f5 [ 63.083853][ T6875] RDX: ffff8880a76ca340 RSI: ffffffff811be171 RDI: 0000000000000001 [ 63.091810][ T6875] RBP: ffff8880a1e64040 R08: 0000000000000001 R09: ffff8880a1e64387 [ 63.099785][ T6875] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002 [ 63.107745][ T6875] R13: fffffffffffffff8 R14: ffff8880a1e64380 R15: 0000000000000000 [ 63.115723][ T6875] ? handle_exception_nmi+0x965/0x12d0 [ 63.121184][ T6875] ? handle_exception_nmi+0x10e1/0x12d0 [ 63.126764][ T6875] ? handle_exception_nmi+0x10e1/0x12d0 [ 63.132307][ T6875] ? vmx_skip_emulated_instruction+0x250/0x250 [ 63.138456][ T6875] vmx_handle_exit+0x2a6/0x1510 [ 63.143319][ T6875] vcpu_enter_guest+0x18f4/0x3c20 [ 63.148336][ T6875] ? kvm_vcpu_reload_apic_access_page+0x80/0x80 [ 63.154568][ T6875] ? lock_release+0x8f0/0x8f0 [ 63.162543][ T6875] ? mark_held_locks+0x9f/0xe0 [ 63.167300][ T6875] ? lock_is_held_type+0xbb/0xf0 [ 63.172227][ T6875] ? kvm_load_guest_fpu+0xa4/0x3f0 [ 63.177321][ T6875] ? __local_bh_enable_ip+0x10f/0x1f0 [ 63.182692][ T6875] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 63.188666][ T6875] ? lock_is_held_type+0xbb/0xf0 [ 63.193598][ T6875] ? kvm_arch_vcpu_ioctl_run+0x440/0x1780 [ 63.199306][ T6875] kvm_arch_vcpu_ioctl_run+0x440/0x1780 [ 63.204861][ T6875] kvm_vcpu_ioctl+0x467/0xdf0 [ 63.209525][ T6875] ? kvm_gfn_to_hva_cache_init+0x1a0/0x1a0 [ 63.215317][ T6875] ? generic_block_fiemap+0x60/0x60 [ 63.220505][ T6875] ? __up_read+0x1a1/0x7b0 [ 63.224914][ T6875] ? _down_write_nest_lock+0x150/0x150 [ 63.230470][ T6875] ? bpf_lsm_file_ioctl+0x5/0x10 [ 63.235408][ T6875] ? kvm_gfn_to_hva_cache_init+0x1a0/0x1a0 [ 63.241204][ T6875] __x64_sys_ioctl+0x193/0x200 [ 63.245969][ T6875] do_syscall_64+0x2d/0x70 [ 63.250380][ T6875] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 63.256269][ T6875] RIP: 0033:0x442cb9 [ 63.260406][ T6875] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 9b 0b fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 63.280014][ T6875] RSP: 002b:00007ffc6098cc08 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 63.288508][ T6875] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000442cb9 [ 63.296472][ T6875] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 63.304511][ T6875] RBP: 00000000006cd018 R08: 0000000000000000 R09: 00000000004002c8 [ 63.312462][ T6875] R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000403ce0 [ 63.320693][ T6875] R13: 0000000000403d70 R14: 0000000000000000 R15: 0000000000000000 [ 63.329905][ T6875] Kernel Offset: disabled [ 63.334313][ T6875] Rebooting in 86400 seconds..