Warning: Permanently added '10.128.0.57' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 75.959160][ T8068] 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. [ 75.991425][ T8068] BUG: unable to handle page fault for address: ffffed12fa126e1f [ 75.999149][ T8068] #PF: supervisor read access in kernel mode [ 76.005262][ T8068] #PF: error_code(0x0000) - not-present page [ 76.011274][ T8068] PGD 21fff0067 P4D 21fff0067 PUD 0 [ 76.016589][ T8068] Oops: 0000 [#1] PREEMPT SMP KASAN [ 76.022113][ T8068] CPU: 0 PID: 8068 Comm: syz-executor158 Not tainted 5.2.0-rc5+ #5 [ 76.029985][ T8068] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.040315][ T8068] RIP: 0010:coalesced_mmio_write+0x23e/0x440 [ 76.046293][ T8068] Code: fc ff df 48 89 45 a8 8a 04 18 84 c0 0f 85 82 01 00 00 4c 89 7d a0 41 8b 46 04 4c 8d 24 40 4f 8d 74 e6 08 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 74 f7 a6 00 4c 8b 7d c8 49 83 c7 f0 [ 76.066383][ T8068] RSP: 0018:ffff88809426ed00 EFLAGS: 00010a02 [ 76.072450][ T8068] RAX: 1ffff112fa126e1f RBX: dffffc0000000000 RCX: ffff88809564c100 [ 76.080531][ T8068] RDX: 0000000000000000 RSI: 000000000000000d RDI: 0000000000000000 [ 76.088500][ T8068] RBP: ffff88809426ed70 R08: ffffffff8107e400 R09: ffffed101284dd8d [ 76.096782][ T8068] R10: ffffed101284dd8c R11: 1ffff1101284dd8c R12: 00000002e780621e [ 76.105256][ T8068] R13: 0000000000000000 R14: ffff8897d09370f8 R15: ffff888094906004 [ 76.113470][ T8068] FS: 0000555556380940(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 76.122541][ T8068] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.129120][ T8068] CR2: ffffed12fa126e1f CR3: 000000008f478000 CR4: 00000000001426f0 [ 76.137084][ T8068] Call Trace: [ 76.140620][ T8068] ? kvm_vm_ioctl_unregister_coalesced_mmio+0x3b0/0x3b0 [ 76.147561][ T8068] kvm_io_bus_write+0x56a/0x6f0 [ 76.152551][ T8068] ? kvm_unregister_device_ops+0x80/0x80 [ 76.158208][ T8068] ? rcu_read_lock_sched_held+0x127/0x1c0 [ 76.163928][ T8068] ? trace_kvm_mmio+0x28c/0x2d0 [ 76.168886][ T8068] write_mmio+0x19f/0x1f0 [ 76.173206][ T8068] emulator_read_write_onepage+0x68a/0x980 [ 76.179003][ T8068] emulator_read_write+0x1d4/0x550 [ 76.184206][ T8068] emulator_write_emulated+0x3c/0x50 [ 76.189585][ T8068] ? emulator_read_emulated+0x50/0x50 [ 76.195187][ T8068] writeback+0x607/0x900 [ 76.199616][ T8068] ? em_xchg+0x230/0x230 [ 76.203850][ T8068] ? emulator_read_write+0x409/0x550 [ 76.209122][ T8068] ? x86_emulate_insn+0xf6a/0x6fe0 [ 76.214217][ T8068] x86_emulate_insn+0x3046/0x6fe0 [ 76.219236][ T8068] ? em_salc+0x8/0x8 [ 76.223121][ T8068] ? init_decode_cache+0x70/0x70 [ 76.228047][ T8068] ? decode_operand+0x145b/0x4820 [ 76.233358][ T8068] ? memcpy+0x49/0x60 [ 76.237330][ T8068] ? decode_operand+0x14ba/0x4820 [ 76.242338][ T8068] ? x86_decode_insn+0x3b6d/0x5120 [ 76.247443][ T8068] x86_emulate_instruction+0x8a8/0x4cc0 [ 76.253196][ T8068] ? kvm_set_rflags+0x3a0/0x3a0 [ 76.258042][ T8068] ? mmio_info_in_cache+0x1e8/0x4a0 [ 76.263665][ T8068] kvm_mmu_page_fault+0x3be/0xf70 [ 76.268780][ T8068] ? trace_lock_acquire+0x190/0x190 [ 76.274121][ T8068] ? vmx_update_host_rsp+0x76/0xe0 [ 76.279648][ T8068] ? __bfs+0x550/0x550 [ 76.283997][ T8068] ? kvm_mmu_unprotect_page_virt+0xd0/0xd0 [ 76.289889][ T8068] ? rcu_read_lock_sched_held+0x127/0x1c0 [ 76.295871][ T8068] ? trace_kvm_page_fault+0x24d/0x290 [ 76.301533][ T8068] handle_ept_violation+0x1a1/0x1f0 [ 76.306933][ T8068] ? handle_desc+0x90/0x90 [ 76.311415][ T8068] vmx_handle_exit+0x3ba/0xd00 [ 76.316165][ T8068] vcpu_enter_guest+0x3e5e/0x5380 [ 76.321551][ T8068] ? local_bh_enable+0x30/0x30 [ 76.326424][ T8068] ? trace_lock_acquire+0x11c/0x190 [ 76.331599][ T8068] ? lock_acquire+0x158/0x250 [ 76.336337][ T8068] ? rcu_lock_acquire+0xd/0x40 [ 76.341083][ T8068] ? kvm_check_async_pf_completion+0x35b/0x370 [ 76.347444][ T8068] vcpu_run+0x393/0xcf0 [ 76.351590][ T8068] kvm_arch_vcpu_ioctl_run+0xcf2/0xff0 [ 76.357055][ T8068] ? rcu_lock_release+0x26/0x30 [ 76.362012][ T8068] kvm_vcpu_ioctl+0x792/0xba0 [ 76.366673][ T8068] ? kvm_vm_release+0x50/0x50 [ 76.371615][ T8068] ? tomoyo_path_number_perm+0x5f0/0x740 [ 76.377253][ T8068] ? tomoyo_check_path_acl+0x180/0x180 [ 76.382938][ T8068] ? __set_current_blocked+0x87/0x630 [ 76.388913][ T8068] ? kvm_vm_release+0x50/0x50 [ 76.393585][ T8068] do_vfs_ioctl+0x7d4/0x1890 [ 76.398164][ T8068] ? signal_setup_done+0x2cc/0x360 [ 76.403269][ T8068] ? __local_bh_enable_ip+0x13a/0x240 [ 76.408782][ T8068] ? ioctl_preallocate+0x240/0x240 [ 76.414459][ T8068] ? __fdget+0x187/0x200 [ 76.419215][ T8068] ? check_preemption_disabled+0xb7/0x280 [ 76.424935][ T8068] ? debug_smp_processor_id+0x1c/0x20 [ 76.430396][ T8068] ? fpregs_assert_state_consistent+0xaa/0xe0 [ 76.436481][ T8068] ? tomoyo_file_ioctl+0x23/0x30 [ 76.441410][ T8068] ? security_file_ioctl+0xa1/0xd0 [ 76.446506][ T8068] __x64_sys_ioctl+0xe3/0x120 [ 76.451184][ T8068] do_syscall_64+0xfe/0x140 [ 76.455695][ T8068] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.461827][ T8068] RIP: 0033:0x4444e9 [ 76.465816][ T8068] 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 1b 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 76.485883][ T8068] RSP: 002b:00007ffe506f0058 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 76.494381][ T8068] RAX: ffffffffffffffda RBX: 00007ffe506f0060 RCX: 00000000004444e9 [ 76.502701][ T8068] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 76.510879][ T8068] RBP: 0000000000000000 R08: 0000000000402240 R09: 0000000000402240 [ 76.518980][ T8068] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000405590 [ 76.527674][ T8068] R13: 0000000000405620 R14: 0000000000000000 R15: 0000000000000000 [ 76.536357][ T8068] Modules linked in: [ 76.540724][ T8068] CR2: ffffed12fa126e1f [ 76.544891][ T8068] ---[ end trace d717c5726d3eaff3 ]--- [ 76.550349][ T8068] RIP: 0010:coalesced_mmio_write+0x23e/0x440 [ 76.556723][ T8068] Code: fc ff df 48 89 45 a8 8a 04 18 84 c0 0f 85 82 01 00 00 4c 89 7d a0 41 8b 46 04 4c 8d 24 40 4f 8d 74 e6 08 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 74 f7 a6 00 4c 8b 7d c8 49 83 c7 f0 [ 76.576889][ T8068] RSP: 0018:ffff88809426ed00 EFLAGS: 00010a02 [ 76.583066][ T8068] RAX: 1ffff112fa126e1f RBX: dffffc0000000000 RCX: ffff88809564c100 [ 76.591154][ T8068] RDX: 0000000000000000 RSI: 000000000000000d RDI: 0000000000000000 [ 76.599407][ T8068] RBP: ffff88809426ed70 R08: ffffffff8107e400 R09: ffffed101284dd8d [ 76.608905][ T8068] R10: ffffed101284dd8c R11: 1ffff1101284dd8c R12: 00000002e780621e [ 76.617155][ T8068] R13: 0000000000000000 R14: ffff8897d09370f8 R15: ffff888094906004 [ 76.625508][ T8068] FS: 0000555556380940(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 76.634772][ T8068] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.641348][ T8068] CR2: ffffed12fa126e1f CR3: 000000008f478000 CR4: 00000000001426f0 [ 76.649468][ T8068] Kernel panic - not syncing: Fatal exception [ 76.657045][ T8068] Kernel Offset: disabled [ 76.661381][ T8068] Rebooting in 86400 seconds..