[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 58.672156][ T26] audit: type=1800 audit(1567652061.574:25): pid=8659 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 58.710393][ T26] audit: type=1800 audit(1567652061.574:26): pid=8659 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 58.760443][ T26] audit: type=1800 audit(1567652061.584:27): pid=8659 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.231' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 66.863347][ T8811] 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. [ 66.896166][ T8811] kvm [8811]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x20 [ 66.905908][ T8811] kvm [8811]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x40 [ 66.915251][ T8811] kvm [8811]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x60 [ 66.924599][ T8811] kvm [8811]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x80 [ 66.933910][ T8811] kvm [8811]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x94 [ 66.943268][ T8811] kvm [8811]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x48c [ 66.952669][ T8811] kvm [8811]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x4ac [ 66.962050][ T8811] kvm [8811]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000005 data 0x1520 [ 66.971948][ T8811] kvm [8811]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000006 data 0x15d4 [ 66.981450][ T8811] kvm [8811]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000007 data 0x15c4 [ 66.995682][ T8811] kasan: CONFIG_KASAN_INLINE enabled [ 67.002650][ T8811] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 67.010782][ T8811] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 67.017730][ T8811] CPU: 1 PID: 8811 Comm: syz-executor671 Not tainted 5.3.0-rc6-next-20190830 #75 [ 67.026808][ T8811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.036850][ T8811] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 67.042465][ T8811] Code: c0 44 89 45 d4 4c 89 4d c8 e8 16 7d 5c 00 49 8d 86 98 00 00 00 48 89 c2 48 89 45 b8 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 65 0a 00 00 4d 8b be 98 00 00 00 0f 1f 44 00 00 [ 67.062080][ T8811] RSP: 0018:ffff8880a7c2f820 EFLAGS: 00010202 [ 67.068129][ T8811] RAX: dffffc0000000000 RBX: ffff8880a7c2f958 RCX: 0000000000000000 [ 67.076086][ T8811] RDX: 0000000000000013 RSI: ffffffff8115d8fa RDI: 0000000000000000 [ 67.084031][ T8811] RBP: ffff8880a7c2f878 R08: 0000000000000000 R09: 0000000000000000 [ 67.092008][ T8811] R10: fffff52000bebc70 R11: ffffc90005f5e383 R12: 0000000000000000 [ 67.099954][ T8811] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88809a08aff0 [ 67.107903][ T8811] FS: 0000555556857880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 67.116803][ T8811] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.123368][ T8811] CR2: 0000000000000000 CR3: 00000000951b1000 CR4: 00000000001426e0 [ 67.131470][ T8811] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.139460][ T8811] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.147852][ T8811] Call Trace: [ 67.151133][ T8811] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.157366][ T8811] kvm_apic_set_irq+0x10b/0x170 [ 67.162196][ T8811] kvm_hv_process_stimers+0xd55/0x1a10 [ 67.167641][ T8811] ? kvm_hv_irq_routing_update+0x410/0x410 [ 67.173428][ T8811] ? lock_acquire+0x190/0x410 [ 67.178085][ T8811] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.184303][ T8811] ? __kasan_check_write+0x14/0x20 [ 67.189404][ T8811] vcpu_enter_guest+0x4d2/0x6200 [ 67.194320][ T8811] ? mark_held_locks+0xf0/0xf0 [ 67.199064][ T8811] ? handle_emulation_failure+0x4e0/0x4e0 [ 67.204762][ T8811] ? lock_acquire+0x190/0x410 [ 67.209420][ T8811] ? kvm_check_async_pf_completion+0x2d8/0x440 [ 67.215567][ T8811] kvm_arch_vcpu_ioctl_run+0x424/0x1750 [ 67.221093][ T8811] ? kvm_arch_vcpu_ioctl_run+0x424/0x1750 [ 67.226824][ T8811] kvm_vcpu_ioctl+0x4dc/0xf50 [ 67.231496][ T8811] ? kvm_write_guest_cached+0x40/0x40 [ 67.238541][ T8811] ? tomoyo_path_number_perm+0x263/0x520 [ 67.244181][ T8811] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 67.249972][ T8811] ? kvm_write_guest_cached+0x40/0x40 [ 67.255522][ T8811] do_vfs_ioctl+0xdb6/0x13e0 [ 67.260092][ T8811] ? ioctl_preallocate+0x210/0x210 [ 67.265192][ T8811] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 67.270886][ T8811] ? __fget_light+0x1a9/0x230 [ 67.275541][ T8811] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 67.281756][ T8811] ? tomoyo_file_ioctl+0x23/0x30 [ 67.286669][ T8811] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.292883][ T8811] ? security_file_ioctl+0x8d/0xc0 [ 67.297983][ T8811] ksys_ioctl+0xab/0xd0 [ 67.302115][ T8811] __x64_sys_ioctl+0x73/0xb0 [ 67.306681][ T8811] do_syscall_64+0xfa/0x760 [ 67.311266][ T8811] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.317152][ T8811] RIP: 0033:0x442a19 [ 67.321026][ T8811] 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 [ 67.341247][ T8811] RSP: 002b:00007ffc5f042148 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 67.349631][ T8811] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000442a19 [ 67.357577][ T8811] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 67.365522][ T8811] RBP: 00000000006cd018 R08: 00000000004002c8 R09: 00000000004002c8 [ 67.373468][ T8811] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000403ac0 [ 67.381425][ T8811] R13: 0000000000403b50 R14: 0000000000000000 R15: 0000000000000000 [ 67.389434][ T8811] Modules linked in: [ 67.394491][ T8811] ---[ end trace 5e9790b6d38bf6f0 ]--- [ 67.399982][ T8811] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 67.405658][ T8811] Code: c0 44 89 45 d4 4c 89 4d c8 e8 16 7d 5c 00 49 8d 86 98 00 00 00 48 89 c2 48 89 45 b8 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 65 0a 00 00 4d 8b be 98 00 00 00 0f 1f 44 00 00 [ 67.425298][ T8811] RSP: 0018:ffff8880a7c2f820 EFLAGS: 00010202 [ 67.431413][ T8811] RAX: dffffc0000000000 RBX: ffff8880a7c2f958 RCX: 0000000000000000 [ 67.439388][ T8811] RDX: 0000000000000013 RSI: ffffffff8115d8fa RDI: 0000000000000000 [ 67.447404][ T8811] RBP: ffff8880a7c2f878 R08: 0000000000000000 R09: 0000000000000000 [ 67.455400][ T8811] R10: fffff52000bebc70 R11: ffffc90005f5e383 R12: 0000000000000000 [ 67.463389][ T8811] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88809a08aff0 [ 67.471389][ T8811] FS: 0000555556857880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 67.480326][ T8811] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.486892][ T8811] CR2: 0000000000000000 CR3: 00000000951b1000 CR4: 00000000001426e0 [ 67.494878][ T8811] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.502878][ T8811] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.510860][ T8811] Kernel panic - not syncing: Fatal exception [ 67.518480][ T8811] Kernel Offset: disabled [ 67.522806][ T8811] Rebooting in 86400 seconds..