Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.29' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 67.022700][ 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. [ 67.082809][ T6871] ------------[ cut here ]------------ [ 67.088687][ T6871] WARNING: CPU: 1 PID: 6871 at arch/x86/kvm/vmx/vmx.c:4809 handle_exception_nmi+0x10e1/0x12d0 [ 67.099128][ T6871] Kernel panic - not syncing: panic_on_warn set ... [ 67.107839][ T6871] CPU: 1 PID: 6871 Comm: syz-executor712 Not tainted 5.9.0-rc7-syzkaller #0 [ 67.116680][ T6871] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.126833][ T6871] Call Trace: [ 67.130130][ T6871] dump_stack+0x198/0x1fd [ 67.134489][ T6871] panic+0x382/0x7fb [ 67.138387][ T6871] ? __warn_printk+0xf3/0xf3 [ 67.142973][ T6871] ? printk+0xba/0xed [ 67.146951][ T6871] ? log_store.cold+0x16/0x16 [ 67.151665][ T6871] ? __warn.cold+0x5/0x4b [ 67.156001][ T6871] ? __warn+0xd6/0x1f2 [ 67.160069][ T6871] ? handle_exception_nmi+0x10e1/0x12d0 [ 67.165630][ T6871] __warn.cold+0x20/0x4b [ 67.169888][ T6871] ? handle_exception_nmi+0x10e1/0x12d0 [ 67.175447][ T6871] report_bug+0x1bd/0x210 [ 67.179877][ T6871] handle_bug+0x38/0x90 [ 67.184148][ T6871] exc_invalid_op+0x14/0x40 [ 67.189158][ T6871] asm_exc_invalid_op+0x12/0x20 [ 67.194045][ T6871] RIP: 0010:handle_exception_nmi+0x10e1/0x12d0 [ 67.200196][ 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 [ 67.222643][ T6871] RSP: 0018:ffffc900013f7b58 EFLAGS: 00010293 [ 67.228815][ T6871] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff811bd9f5 [ 67.236784][ T6871] RDX: ffff888092f26440 RSI: ffffffff811be171 RDI: 0000000000000001 [ 67.245096][ T6871] RBP: ffff888092cfc040 R08: 0000000000000001 R09: ffff888092cfc387 [ 67.253058][ T6871] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002 [ 67.261917][ T6871] R13: fffffffffffffff8 R14: ffff888092cfc380 R15: 0000000000000000 [ 67.271578][ T6871] ? handle_exception_nmi+0x965/0x12d0 [ 67.277256][ T6871] ? handle_exception_nmi+0x10e1/0x12d0 [ 67.282817][ T6871] ? handle_exception_nmi+0x10e1/0x12d0 [ 67.288368][ T6871] ? vmx_skip_emulated_instruction+0x250/0x250 [ 67.294670][ T6871] vmx_handle_exit+0x2a6/0x1510 [ 67.299684][ T6871] vcpu_enter_guest+0x18f4/0x3c20 [ 67.304968][ T6871] ? kvm_vcpu_reload_apic_access_page+0x80/0x80 [ 67.311217][ T6871] ? lock_release+0x8f0/0x8f0 [ 67.315901][ T6871] ? mark_held_locks+0x9f/0xe0 [ 67.320715][ T6871] ? lock_is_held_type+0xbb/0xf0 [ 67.325767][ T6871] ? kvm_load_guest_fpu+0xa4/0x3f0 [ 67.330902][ T6871] ? __local_bh_enable_ip+0x10f/0x1f0 [ 67.336510][ T6871] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 67.346111][ T6871] ? lock_is_held_type+0xbb/0xf0 [ 67.351245][ T6871] ? kvm_arch_vcpu_ioctl_run+0x440/0x1780 [ 67.357001][ T6871] kvm_arch_vcpu_ioctl_run+0x440/0x1780 [ 67.362565][ T6871] kvm_vcpu_ioctl+0x467/0xdf0 [ 67.367272][ T6871] ? kvm_gfn_to_hva_cache_init+0x1a0/0x1a0 [ 67.373110][ T6871] ? generic_block_fiemap+0x60/0x60 [ 67.378347][ T6871] ? __up_read+0x1a1/0x7b0 [ 67.382818][ T6871] ? _down_write_nest_lock+0x150/0x150 [ 67.388516][ T6871] ? bpf_lsm_file_ioctl+0x5/0x10 [ 67.393708][ T6871] ? kvm_gfn_to_hva_cache_init+0x1a0/0x1a0 [ 67.399532][ T6871] __x64_sys_ioctl+0x193/0x200 [ 67.404329][ T6871] do_syscall_64+0x2d/0x70 [ 67.408905][ T6871] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 67.415149][ T6871] RIP: 0033:0x442839 [ 67.419303][ T6871] 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 [ 67.440575][ T6871] RSP: 002b:00007fff1579cc18 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 67.449003][ T6871] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000442839 [ 67.457000][ T6871] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 67.464987][ T6871] RBP: 00000000006cd018 R08: 0000000000000000 R09: 00000000004002c8 [ 67.473009][ T6871] R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000403860 [ 67.481099][ T6871] R13: 00000000004038f0 R14: 0000000000000000 R15: 0000000000000000 [ 67.490377][ T6871] Kernel Offset: disabled [ 67.494950][ T6871] Rebooting in 86400 seconds..