[ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.28' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 69.947985][ T27] audit: type=1400 audit(1601109325.867:8): avc: denied { execmem } for pid=6889 comm="syz-executor249" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 69.949658][ T6889] 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. [ 70.020348][ T6889] ------------[ cut here ]------------ [ 70.026159][ T6889] WARNING: CPU: 0 PID: 6889 at arch/x86/kvm/vmx/vmx.c:4809 handle_exception_nmi+0x10e1/0x12d0 [ 70.038552][ T6889] Kernel panic - not syncing: panic_on_warn set ... [ 70.045160][ T6889] CPU: 0 PID: 6889 Comm: syz-executor249 Not tainted 5.9.0-rc6-syzkaller #0 [ 70.053805][ T6889] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.063939][ T6889] Call Trace: [ 70.067236][ T6889] dump_stack+0x198/0x1fd [ 70.071558][ T6889] panic+0x382/0x7fb [ 70.075435][ T6889] ? __warn_printk+0xf3/0xf3 [ 70.080008][ T6889] ? printk+0xba/0xed [ 70.083971][ T6889] ? log_store.cold+0x16/0x16 [ 70.088626][ T6889] ? __warn.cold+0x5/0x4b [ 70.092951][ T6889] ? __warn+0xd6/0x1f2 [ 70.097001][ T6889] ? handle_exception_nmi+0x10e1/0x12d0 [ 70.102537][ T6889] __warn.cold+0x20/0x4b [ 70.106764][ T6889] ? handle_exception_nmi+0x10e1/0x12d0 [ 70.112437][ T6889] report_bug+0x1bd/0x210 [ 70.117212][ T6889] handle_bug+0x38/0x90 [ 70.121355][ T6889] exc_invalid_op+0x14/0x40 [ 70.125844][ T6889] asm_exc_invalid_op+0x12/0x20 [ 70.130676][ T6889] RIP: 0010:handle_exception_nmi+0x10e1/0x12d0 [ 70.136807][ T6889] 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 [ 70.156580][ T6889] RSP: 0018:ffffc90001007b58 EFLAGS: 00010293 [ 70.162629][ T6889] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff811bd9f5 [ 70.170588][ T6889] RDX: ffff8880a21a25c0 RSI: ffffffff811be171 RDI: 0000000000000001 [ 70.178536][ T6889] RBP: ffff888085ce0040 R08: 0000000000000001 R09: ffff888085ce0387 [ 70.186487][ T6889] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002 [ 70.194436][ T6889] R13: fffffffffffffff8 R14: ffff888085ce0380 R15: 0000000000000000 [ 70.202417][ T6889] ? handle_exception_nmi+0x965/0x12d0 [ 70.207879][ T6889] ? handle_exception_nmi+0x10e1/0x12d0 [ 70.213407][ T6889] ? handle_exception_nmi+0x10e1/0x12d0 [ 70.219086][ T6889] ? vmx_skip_emulated_instruction+0x250/0x250 [ 70.225249][ T6889] vmx_handle_exit+0x2a6/0x1510 [ 70.230785][ T6889] vcpu_enter_guest+0x18f4/0x3c20 [ 70.235814][ T6889] ? kvm_vcpu_reload_apic_access_page+0x80/0x80 [ 70.242047][ T6889] ? lock_release+0x8f0/0x8f0 [ 70.246714][ T6889] ? mark_held_locks+0x9f/0xe0 [ 70.251457][ T6889] ? lock_is_held_type+0xbb/0xf0 [ 70.256375][ T6889] ? kvm_load_guest_fpu+0xa4/0x3f0 [ 70.261495][ T6889] ? __local_bh_enable_ip+0x10f/0x1f0 [ 70.266860][ T6889] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 70.272847][ T6889] ? lock_is_held_type+0xbb/0xf0 [ 70.277784][ T6889] ? dmz_recover_mblocks+0x2c0/0x840 [ 70.283085][ T6889] ? kvm_arch_vcpu_ioctl_run+0x440/0x1780 [ 70.288819][ T6889] kvm_arch_vcpu_ioctl_run+0x440/0x1780 [ 70.294480][ T6889] kvm_vcpu_ioctl+0x467/0xdf0 [ 70.299188][ T6889] ? kvm_gfn_to_hva_cache_init+0x1a0/0x1a0 [ 70.305130][ T6889] ? generic_block_fiemap+0x60/0x60 [ 70.311307][ T6889] ? selinux_inode_getsecctx+0x90/0x90 [ 70.316758][ T6889] ? _down_write_nest_lock+0x150/0x150 [ 70.322209][ T6889] ? bpf_lsm_file_ioctl+0x5/0x10 [ 70.327133][ T6889] ? kvm_gfn_to_hva_cache_init+0x1a0/0x1a0 [ 70.332924][ T6889] __x64_sys_ioctl+0x193/0x200 [ 70.337671][ T6889] do_syscall_64+0x2d/0x70 [ 70.342067][ T6889] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 70.347960][ T6889] RIP: 0033:0x442839 [ 70.351847][ T6889] 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 [ 70.371444][ T6889] RSP: 002b:00007ffe77e365c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 70.379849][ T6889] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000442839 [ 70.387805][ T6889] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 70.395770][ T6889] RBP: 00000000006cd018 R08: 0000000000000000 R09: 00000000004002c8 [ 70.404676][ T6889] R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000403860 [ 70.412632][ T6889] R13: 00000000004038f0 R14: 0000000000000000 R15: 0000000000000000 [ 70.422214][ T6889] Kernel Offset: disabled [ 70.426606][ T6889] Rebooting in 86400 seconds..