Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.247' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 57.958622][ T6858] 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. [ 58.010898][ T6858] ------------[ cut here ]------------ [ 58.016673][ T6858] WARNING: CPU: 1 PID: 6858 at arch/x86/kvm/vmx/vmx.c:4809 handle_exception_nmi+0x10e1/0x12d0 [ 58.027122][ T6858] Kernel panic - not syncing: panic_on_warn set ... [ 58.033729][ T6858] CPU: 1 PID: 6858 Comm: syz-executor007 Not tainted 5.9.0-rc6-syzkaller #0 [ 58.042405][ T6858] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.052434][ T6858] Call Trace: [ 58.055709][ T6858] dump_stack+0x198/0x1fd [ 58.060019][ T6858] panic+0x382/0x7fb [ 58.063893][ T6858] ? __warn_printk+0xf3/0xf3 [ 58.068476][ T6858] ? printk+0xba/0xed [ 58.072435][ T6858] ? log_store.cold+0x16/0x16 [ 58.077089][ T6858] ? __warn.cold+0x5/0x4b [ 58.081394][ T6858] ? __warn+0xd6/0x1f2 [ 58.085444][ T6858] ? handle_exception_nmi+0x10e1/0x12d0 [ 58.090966][ T6858] __warn.cold+0x20/0x4b [ 58.095188][ T6858] ? handle_exception_nmi+0x10e1/0x12d0 [ 58.100716][ T6858] report_bug+0x1bd/0x210 [ 58.105040][ T6858] handle_bug+0x38/0x90 [ 58.109197][ T6858] exc_invalid_op+0x14/0x40 [ 58.113705][ T6858] asm_exc_invalid_op+0x12/0x20 [ 58.118538][ T6858] RIP: 0010:handle_exception_nmi+0x10e1/0x12d0 [ 58.124667][ T6858] Code: 0f 84 16 f3 ff ff e8 ee 5c 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 cf 5c 5a 00 <0f> 0b e9 85 f8 ff ff e8 c3 5c 5a 00 be f5 ff ff ff bf 01 00 00 00 [ 58.144247][ T6858] RSP: 0018:ffffc90005597b58 EFLAGS: 00010293 [ 58.150295][ T6858] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff811bd9f5 [ 58.158254][ T6858] RDX: ffff888093a7c280 RSI: ffffffff811be171 RDI: 0000000000000001 [ 58.166201][ T6858] RBP: ffff888094db8040 R08: 0000000000000001 R09: ffff888094db8387 [ 58.174149][ T6858] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002 [ 58.182104][ T6858] R13: fffffffffffffff8 R14: ffff888094db8380 R15: 0000000000000000 [ 58.190554][ T6858] ? handle_exception_nmi+0x965/0x12d0 [ 58.196028][ T6858] ? handle_exception_nmi+0x10e1/0x12d0 [ 58.201580][ T6858] ? handle_exception_nmi+0x10e1/0x12d0 [ 58.207195][ T6858] ? vmx_skip_emulated_instruction+0x250/0x250 [ 58.213323][ T6858] vmx_handle_exit+0x2a6/0x1510 [ 58.218156][ T6858] vcpu_enter_guest+0x18f4/0x3c20 [ 58.223161][ T6858] ? kvm_vcpu_reload_apic_access_page+0x80/0x80 [ 58.229387][ T6858] ? lock_release+0x8f0/0x8f0 [ 58.234039][ T6858] ? mark_held_locks+0x9f/0xe0 [ 58.238777][ T6858] ? lock_is_held_type+0xbb/0xf0 [ 58.243694][ T6858] ? kvm_load_guest_fpu+0xa4/0x3f0 [ 58.248784][ T6858] ? __local_bh_enable_ip+0x10f/0x1f0 [ 58.254146][ T6858] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 58.260114][ T6858] ? lock_is_held_type+0xbb/0xf0 [ 58.265042][ T6858] ? kvm_arch_vcpu_ioctl_run+0x440/0x1780 [ 58.270734][ T6858] kvm_arch_vcpu_ioctl_run+0x440/0x1780 [ 58.276268][ T6858] kvm_vcpu_ioctl+0x467/0xdf0 [ 58.280921][ T6858] ? kvm_gfn_to_hva_cache_init+0x1a0/0x1a0 [ 58.286717][ T6858] ? generic_block_fiemap+0x60/0x60 [ 58.291905][ T6858] ? __up_read+0x1a1/0x7b0 [ 58.296326][ T6858] ? _down_write_nest_lock+0x150/0x150 [ 58.301809][ T6858] ? bpf_lsm_file_ioctl+0x5/0x10 [ 58.306758][ T6858] ? kvm_gfn_to_hva_cache_init+0x1a0/0x1a0 [ 58.312573][ T6858] __x64_sys_ioctl+0x193/0x200 [ 58.317350][ T6858] do_syscall_64+0x2d/0x70 [ 58.321792][ T6858] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.327686][ T6858] RIP: 0033:0x442839 [ 58.331584][ T6858] 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 [ 58.351186][ T6858] RSP: 002b:00007ffe797aa058 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 58.359598][ T6858] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000442839 [ 58.367568][ T6858] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 58.375538][ T6858] RBP: 00000000006cd018 R08: 0000000000000000 R09: 00000000004002c8 [ 58.383501][ T6858] R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000403860 [ 58.391461][ T6858] R13: 00000000004038f0 R14: 0000000000000000 R15: 0000000000000000 [ 58.400500][ T6858] Kernel Offset: disabled [ 58.404861][ T6858] Rebooting in 86400 seconds..