Warning: Permanently added '10.128.0.80' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 81.036844][ T9377] 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. [ 81.075610][ T9377] ------------[ cut here ]------------ [ 81.081143][ T9377] kernel BUG at arch/x86/kvm/mmu/mmu.c:3416! [ 81.087229][ T9377] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 81.093286][ T9377] CPU: 0 PID: 9377 Comm: syz-executor731 Not tainted 5.5.0-rc2-next-20191220-syzkaller #0 [ 81.103202][ T9377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.113298][ T9377] RIP: 0010:transparent_hugepage_adjust+0x4c8/0x550 [ 81.119871][ T9377] Code: ff ff e8 5b 84 5e 00 48 8b 45 b8 48 83 e8 01 48 89 45 c8 e9 a3 fd ff ff 48 89 df e8 e2 6e 9c 00 e9 7b fb ff ff e8 38 84 5e 00 <0f> 0b 48 8b 7d c8 e8 cd 6e 9c 00 e9 ba fc ff ff 49 8d 7f 30 e8 9f [ 81.139462][ T9377] RSP: 0018:ffffc900020577f8 EFLAGS: 00010293 [ 81.145544][ T9377] RAX: ffff88808e60e180 RBX: ffffc900020578e8 RCX: ffffffff8116d017 [ 81.153489][ T9377] RDX: 0000000000000000 RSI: ffffffff8116d158 RDI: 0000000000000007 [ 81.161472][ T9377] RBP: ffffc90002057840 R08: ffff88808e60e180 R09: ffffed1011639682 [ 81.169419][ T9377] R10: ffffed1011639681 R11: ffff88808b1cb40b R12: 00000000000001b3 [ 81.177368][ T9377] R13: 000000000009abb3 R14: 000000000009abb1 R15: 0000000000000000 [ 81.185351][ T9377] FS: 0000000001e6d880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 81.194255][ T9377] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.200812][ T9377] CR2: 0000000000000000 CR3: 00000000a786c000 CR4: 00000000001426f0 [ 81.208772][ T9377] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.216729][ T9377] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.224683][ T9377] Call Trace: [ 81.227969][ T9377] tdp_page_fault+0x580/0x6a0 [ 81.232626][ T9377] ? nonpaging_page_fault+0x610/0x610 [ 81.238019][ T9377] ? stack_trace_save+0xac/0xe0 [ 81.242846][ T9377] ? stack_trace_save+0x1/0xe0 [ 81.247585][ T9377] ? mark_lock+0xc2/0x1220 [ 81.251978][ T9377] kvm_mmu_page_fault+0x1dd/0x1800 [ 81.257074][ T9377] ? __kasan_check_read+0x11/0x20 [ 81.262128][ T9377] ? mark_lock+0xc2/0x1220 [ 81.266523][ T9377] ? security_file_ioctl+0x77/0xc0 [ 81.271608][ T9377] ? ksys_ioctl+0x56/0x180 [ 81.276000][ T9377] ? __x64_sys_ioctl+0x73/0xb0 [ 81.280741][ T9377] ? kvm_nx_lpage_recovery_worker+0x7f0/0x7f0 [ 81.286786][ T9377] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 81.292914][ T9377] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 81.298453][ T9377] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 81.304463][ T9377] handle_ept_violation+0x259/0x560 [ 81.309694][ T9377] ? vmx_inject_irq+0x5c0/0x5c0 [ 81.314520][ T9377] vmx_handle_exit+0x29f/0x1730 [ 81.319351][ T9377] vcpu_enter_guest+0x3354/0x6110 [ 81.324386][ T9377] ? mark_held_locks+0xf0/0xf0 [ 81.329140][ T9377] ? kvm_vcpu_reload_apic_access_page+0x370/0x370 [ 81.335530][ T9377] ? lock_acquire+0x190/0x410 [ 81.340198][ T9377] ? kvm_check_async_pf_completion+0x2d8/0x440 [ 81.346328][ T9377] kvm_arch_vcpu_ioctl_run+0x430/0x17b0 [ 81.351847][ T9377] ? kvm_arch_vcpu_ioctl_run+0x430/0x17b0 [ 81.357568][ T9377] kvm_vcpu_ioctl+0x4dc/0xfc0 [ 81.362221][ T9377] ? kvm_write_guest_cached+0x40/0x40 [ 81.367570][ T9377] ? ioctl_file_clone+0x180/0x180 [ 81.372597][ T9377] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.378825][ T9377] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 81.384974][ T9377] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 81.390499][ T9377] ? tomoyo_file_ioctl+0x23/0x30 [ 81.395416][ T9377] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.401634][ T9377] ? security_file_ioctl+0x8d/0xc0 [ 81.406724][ T9377] ? kvm_write_guest_cached+0x40/0x40 [ 81.412232][ T9377] ksys_ioctl+0x123/0x180 [ 81.416542][ T9377] __x64_sys_ioctl+0x73/0xb0 [ 81.421247][ T9377] do_syscall_64+0xfa/0x790 [ 81.425758][ T9377] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.431624][ T9377] RIP: 0033:0x440359 [ 81.435650][ T9377] 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 81.455285][ T9377] RSP: 002b:00007fff5e6529c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 81.463676][ T9377] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440359 [ 81.471629][ T9377] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006 [ 81.479608][ T9377] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 81.487558][ T9377] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401be0 [ 81.495507][ T9377] R13: 0000000000401c70 R14: 0000000000000000 R15: 0000000000000000 [ 81.503470][ T9377] Modules linked in: [ 81.507410][ T9377] ---[ end trace b8e2ee2ce3d38386 ]--- [ 81.512872][ T9377] RIP: 0010:transparent_hugepage_adjust+0x4c8/0x550 [ 81.519480][ T9377] Code: ff ff e8 5b 84 5e 00 48 8b 45 b8 48 83 e8 01 48 89 45 c8 e9 a3 fd ff ff 48 89 df e8 e2 6e 9c 00 e9 7b fb ff ff e8 38 84 5e 00 <0f> 0b 48 8b 7d c8 e8 cd 6e 9c 00 e9 ba fc ff ff 49 8d 7f 30 e8 9f [ 81.539119][ T9377] RSP: 0018:ffffc900020577f8 EFLAGS: 00010293 [ 81.545203][ T9377] RAX: ffff88808e60e180 RBX: ffffc900020578e8 RCX: ffffffff8116d017 [ 81.553166][ T9377] RDX: 0000000000000000 RSI: ffffffff8116d158 RDI: 0000000000000007 [ 81.561151][ T9377] RBP: ffffc90002057840 R08: ffff88808e60e180 R09: ffffed1011639682 [ 81.569208][ T9377] R10: ffffed1011639681 R11: ffff88808b1cb40b R12: 00000000000001b3 [ 81.577223][ T9377] R13: 000000000009abb3 R14: 000000000009abb1 R15: 0000000000000000 [ 81.585225][ T9377] FS: 0000000001e6d880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 81.594181][ T9377] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.600759][ T9377] CR2: 0000000000000000 CR3: 00000000a786c000 CR4: 00000000001426f0 [ 81.608873][ T9377] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.616883][ T9377] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.624877][ T9377] Kernel panic - not syncing: Fatal exception [ 81.632129][ T9377] Kernel Offset: disabled [ 81.636457][ T9377] Rebooting in 86400 seconds..