[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 59.574695][ T26] audit: type=1800 audit(1567647616.902:25): pid=8516 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 59.616113][ T26] audit: type=1800 audit(1567647616.902:26): pid=8516 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 59.649338][ T26] audit: type=1800 audit(1567647616.902:27): pid=8516 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 '10.128.10.56' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 70.303417][ T8669] 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. [ 70.333992][ T8669] kvm [8669]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x20 [ 70.343365][ T8669] kvm [8669]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x40 [ 70.353029][ T8669] kvm [8669]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x60 [ 70.362414][ T8669] kvm [8669]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x80 [ 70.371701][ T8669] kvm [8669]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x94 [ 70.381251][ T8669] kvm [8669]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x48c [ 70.390680][ T8669] kvm [8669]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x4ac [ 70.400073][ T8669] kvm [8669]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000005 data 0x1520 [ 70.409524][ T8669] kvm [8669]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000006 data 0x15d4 [ 70.419005][ T8669] kvm [8669]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000007 data 0x15c4 [ 70.432653][ T8669] kasan: CONFIG_KASAN_INLINE enabled [ 70.438629][ T8669] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 70.446745][ T8669] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 70.453675][ T8669] CPU: 0 PID: 8669 Comm: syz-executor069 Not tainted 5.3.0-rc6-next-20190830 #75 [ 70.462749][ T8669] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.472785][ T8669] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 70.478393][ T8669] 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 [ 70.497970][ T8669] RSP: 0018:ffff888094d5f820 EFLAGS: 00010202 [ 70.504007][ T8669] RAX: dffffc0000000000 RBX: ffff888094d5f958 RCX: 0000000000000000 [ 70.511955][ T8669] RDX: 0000000000000013 RSI: ffffffff8115d8fa RDI: 0000000000000000 [ 70.519909][ T8669] RBP: ffff888094d5f878 R08: 0000000000000000 R09: 0000000000000000 [ 70.527855][ T8669] R10: fffff52000be7870 R11: ffffc90005f3c383 R12: 0000000000000000 [ 70.535800][ T8669] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880a3962ff0 [ 70.543745][ T8669] FS: 0000555555fcd880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 70.552644][ T8669] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.559199][ T8669] CR2: 0000000000000000 CR3: 0000000092ce7000 CR4: 00000000001426f0 [ 70.567147][ T8669] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.575093][ T8669] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.583051][ T8669] Call Trace: [ 70.586320][ T8669] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.592536][ T8669] kvm_apic_set_irq+0x10b/0x170 [ 70.597376][ T8669] kvm_hv_process_stimers+0xd55/0x1a10 [ 70.602810][ T8669] ? kvm_hv_irq_routing_update+0x410/0x410 [ 70.608589][ T8669] ? lock_acquire+0x190/0x410 [ 70.613241][ T8669] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.619455][ T8669] ? __kasan_check_write+0x14/0x20 [ 70.624540][ T8669] vcpu_enter_guest+0x4d2/0x6200 [ 70.629454][ T8669] ? mark_held_locks+0xf0/0xf0 [ 70.634204][ T8669] ? handle_emulation_failure+0x4e0/0x4e0 [ 70.639898][ T8669] ? lock_acquire+0x190/0x410 [ 70.644558][ T8669] ? kvm_check_async_pf_completion+0x2d8/0x440 [ 70.650686][ T8669] kvm_arch_vcpu_ioctl_run+0x424/0x1750 [ 70.656206][ T8669] ? kvm_arch_vcpu_ioctl_run+0x424/0x1750 [ 70.661915][ T8669] kvm_vcpu_ioctl+0x4dc/0xf50 [ 70.666571][ T8669] ? kvm_write_guest_cached+0x40/0x40 [ 70.671917][ T8669] ? tomoyo_path_number_perm+0x263/0x520 [ 70.677524][ T8669] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 70.683307][ T8669] ? kvm_write_guest_cached+0x40/0x40 [ 70.688671][ T8669] do_vfs_ioctl+0xdb6/0x13e0 [ 70.693233][ T8669] ? ioctl_preallocate+0x210/0x210 [ 70.698321][ T8669] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 70.704010][ T8669] ? __fget_light+0x1a9/0x230 [ 70.708662][ T8669] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 70.714876][ T8669] ? tomoyo_file_ioctl+0x23/0x30 [ 70.719786][ T8669] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.726000][ T8669] ? security_file_ioctl+0x8d/0xc0 [ 70.731082][ T8669] ksys_ioctl+0xab/0xd0 [ 70.735229][ T8669] __x64_sys_ioctl+0x73/0xb0 [ 70.739805][ T8669] do_syscall_64+0xfa/0x760 [ 70.744283][ T8669] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.750158][ T8669] RIP: 0033:0x442a19 [ 70.754027][ T8669] 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 [ 70.773602][ T8669] RSP: 002b:00007ffd54a22eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 70.781984][ T8669] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000442a19 [ 70.789931][ T8669] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 70.797874][ T8669] RBP: 00000000006cd018 R08: 00000000004002c8 R09: 00000000004002c8 [ 70.805818][ T8669] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000403ac0 [ 70.813762][ T8669] R13: 0000000000403b50 R14: 0000000000000000 R15: 0000000000000000 [ 70.821707][ T8669] Modules linked in: [ 70.826198][ T8669] ---[ end trace e99a14ec96246477 ]--- [ 70.831661][ T8669] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 70.837354][ T8669] 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 [ 70.856967][ T8669] RSP: 0018:ffff888094d5f820 EFLAGS: 00010202 [ 70.863006][ T8669] RAX: dffffc0000000000 RBX: ffff888094d5f958 RCX: 0000000000000000 [ 70.870980][ T8669] RDX: 0000000000000013 RSI: ffffffff8115d8fa RDI: 0000000000000000 [ 70.878959][ T8669] RBP: ffff888094d5f878 R08: 0000000000000000 R09: 0000000000000000 [ 70.886930][ T8669] R10: fffff52000be7870 R11: ffffc90005f3c383 R12: 0000000000000000 [ 70.894887][ T8669] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880a3962ff0 [ 70.902907][ T8669] FS: 0000555555fcd880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 70.911838][ T8669] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.918426][ T8669] CR2: 0000000000000000 CR3: 0000000092ce7000 CR4: 00000000001426f0 [ 70.926401][ T8669] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.934364][ T8669] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.942348][ T8669] Kernel panic - not syncing: Fatal exception [ 70.949127][ T8669] Kernel Offset: disabled [ 70.953444][ T8669] Rebooting in 86400 seconds..