[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 56.659196][ T26] audit: type=1800 audit(1567649872.161:25): pid=8580 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 56.680103][ T26] audit: type=1800 audit(1567649872.171:26): pid=8580 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 56.785484][ T26] audit: type=1800 audit(1567649872.291:27): pid=8580 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 '10.128.0.144' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 67.081506][ T8734] 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. [ 67.114298][ T8734] kvm [8734]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x20 [ 67.123898][ T8734] kvm [8734]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x40 [ 67.133271][ T8734] kvm [8734]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x60 [ 67.142672][ T8734] kvm [8734]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x80 [ 67.151963][ T8734] kvm [8734]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x94 [ 67.161277][ T8734] kvm [8734]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x48c [ 67.170697][ T8734] kvm [8734]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x4ac [ 67.180568][ T8734] kvm [8734]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000005 data 0x1520 [ 67.190027][ T8734] kvm [8734]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000006 data 0x15d4 [ 67.199526][ T8734] kvm [8734]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000007 data 0x15c4 [ 67.213120][ T8734] kasan: CONFIG_KASAN_INLINE enabled [ 67.218482][ T8734] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 67.227537][ T8734] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 67.234489][ T8734] CPU: 1 PID: 8734 Comm: syz-executor206 Not tainted 5.3.0-rc6-next-20190830 #75 [ 67.243653][ T8734] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.253706][ T8734] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 67.259313][ T8734] 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 [ 67.278891][ T8734] RSP: 0018:ffff888096577820 EFLAGS: 00010202 [ 67.285017][ T8734] RAX: dffffc0000000000 RBX: ffff888096577958 RCX: 0000000000000000 [ 67.292962][ T8734] RDX: 0000000000000013 RSI: ffffffff8115d8fa RDI: 0000000000000000 [ 67.300905][ T8734] RBP: ffff888096577878 R08: 0000000000000000 R09: 0000000000000000 [ 67.308856][ T8734] R10: fffff52000be8c70 R11: ffffc90005f46383 R12: 0000000000000000 [ 67.316801][ T8734] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88808d19aff0 [ 67.324746][ T8734] FS: 0000555556dba880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 67.333645][ T8734] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.340198][ T8734] CR2: 0000000000000000 CR3: 00000000a83b5000 CR4: 00000000001426e0 [ 67.348145][ T8734] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.356100][ T8734] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.364051][ T8734] Call Trace: [ 67.367326][ T8734] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.373541][ T8734] kvm_apic_set_irq+0x10b/0x170 [ 67.378365][ T8734] kvm_hv_process_stimers+0xd55/0x1a10 [ 67.383801][ T8734] ? kvm_hv_irq_routing_update+0x410/0x410 [ 67.389582][ T8734] ? lock_acquire+0x190/0x410 [ 67.394232][ T8734] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.400445][ T8734] ? __kasan_check_write+0x14/0x20 [ 67.405543][ T8734] vcpu_enter_guest+0x4d2/0x6200 [ 67.410457][ T8734] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 67.415888][ T8734] ? handle_emulation_failure+0x4e0/0x4e0 [ 67.421580][ T8734] ? kvm_check_async_pf_completion+0x2d8/0x440 [ 67.427707][ T8734] kvm_arch_vcpu_ioctl_run+0x424/0x1750 [ 67.433226][ T8734] ? kvm_arch_vcpu_ioctl_run+0x424/0x1750 [ 67.438920][ T8734] kvm_vcpu_ioctl+0x4dc/0xf50 [ 67.443568][ T8734] ? kvm_write_guest_cached+0x40/0x40 [ 67.448918][ T8734] ? tomoyo_path_number_perm+0x263/0x520 [ 67.454523][ T8734] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 67.460307][ T8734] ? kvm_write_guest_cached+0x40/0x40 [ 67.465662][ T8734] do_vfs_ioctl+0xdb6/0x13e0 [ 67.470235][ T8734] ? ioctl_preallocate+0x210/0x210 [ 67.475330][ T8734] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 67.481031][ T8734] ? __fget_light+0x1a9/0x230 [ 67.485682][ T8734] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 67.491891][ T8734] ? tomoyo_file_ioctl+0x23/0x30 [ 67.496799][ T8734] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.503014][ T8734] ? security_file_ioctl+0x8d/0xc0 [ 67.508098][ T8734] ksys_ioctl+0xab/0xd0 [ 67.512226][ T8734] __x64_sys_ioctl+0x73/0xb0 [ 67.516789][ T8734] do_syscall_64+0xfa/0x760 [ 67.521272][ T8734] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.527134][ T8734] RIP: 0033:0x442a19 [ 67.531005][ T8734] 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 [ 67.550578][ T8734] RSP: 002b:00007ffc12f883d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 67.558956][ T8734] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000442a19 [ 67.566899][ T8734] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 67.574844][ T8734] RBP: 00000000006cd018 R08: 00000000004002c8 R09: 00000000004002c8 [ 67.582789][ T8734] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000403ac0 [ 67.590742][ T8734] R13: 0000000000403b50 R14: 0000000000000000 R15: 0000000000000000 [ 67.598688][ T8734] Modules linked in: [ 67.603042][ T8734] ---[ end trace 5d4e64a29d3ef6ba ]--- [ 67.608507][ T8734] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 67.614169][ T8734] 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 [ 67.633810][ T8734] RSP: 0018:ffff888096577820 EFLAGS: 00010202 [ 67.639885][ T8734] RAX: dffffc0000000000 RBX: ffff888096577958 RCX: 0000000000000000 [ 67.647840][ T8734] RDX: 0000000000000013 RSI: ffffffff8115d8fa RDI: 0000000000000000 [ 67.655834][ T8734] RBP: ffff888096577878 R08: 0000000000000000 R09: 0000000000000000 [ 67.663811][ T8734] R10: fffff52000be8c70 R11: ffffc90005f46383 R12: 0000000000000000 [ 67.671813][ T8734] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88808d19aff0 [ 67.679801][ T8734] FS: 0000555556dba880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 67.688708][ T8734] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.695339][ T8734] CR2: 0000000000000000 CR3: 00000000a83b5000 CR4: 00000000001426e0 [ 67.703334][ T8734] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.711330][ T8734] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.719316][ T8734] Kernel panic - not syncing: Fatal exception [ 67.726718][ T8734] Kernel Offset: disabled [ 67.731041][ T8734] Rebooting in 86400 seconds..