[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 55.408002][ T26] audit: type=1800 audit(1567656756.683:25): pid=8570 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 55.446288][ T26] audit: type=1800 audit(1567656756.683:26): pid=8570 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 55.479147][ T26] audit: type=1800 audit(1567656756.693:27): pid=8570 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 '10.128.10.34' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 67.396716][ T8723] 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. [ 67.427882][ T8723] kvm [8723]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x20 [ 67.437656][ T8723] kvm [8723]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x40 [ 67.447006][ T8723] kvm [8723]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x60 [ 67.456438][ T8723] kvm [8723]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x80 [ 67.465721][ T8723] kvm [8723]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x94 [ 67.475090][ T8723] kvm [8723]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x48c [ 67.484518][ T8723] kvm [8723]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x4ac [ 67.493967][ T8723] kvm [8723]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000005 data 0x1520 [ 67.503488][ T8723] kvm [8723]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000006 data 0x15d4 [ 67.513032][ T8723] kvm [8723]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000007 data 0x15c4 [ 67.527124][ T8723] kasan: CONFIG_KASAN_INLINE enabled [ 67.532489][ T8723] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 67.540621][ T8723] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 67.547548][ T8723] CPU: 1 PID: 8723 Comm: syz-executor687 Not tainted 5.3.0-rc6-next-20190830 #75 [ 67.556627][ T8723] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.566668][ T8723] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 67.572276][ T8723] 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 [ 67.591857][ T8723] RSP: 0018:ffff888090fe7820 EFLAGS: 00010202 [ 67.597986][ T8723] RAX: dffffc0000000000 RBX: ffff888090fe7958 RCX: 0000000000000000 [ 67.605935][ T8723] RDX: 0000000000000013 RSI: ffffffff8115d8fa RDI: 0000000000000000 [ 67.613884][ T8723] RBP: ffff888090fe7878 R08: 0000000000000000 R09: 0000000000000000 [ 67.621833][ T8723] R10: fffff52000be9c70 R11: ffffc90005f4e383 R12: 0000000000000000 [ 67.629779][ T8723] R13: 0000000000000000 R14: 0000000000000000 R15: ffff888099aa2ff0 [ 67.637727][ T8723] FS: 00005555556ac880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 67.646661][ T8723] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.653217][ T8723] CR2: 0000000000000000 CR3: 000000009a1b6000 CR4: 00000000001426e0 [ 67.661228][ T8723] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.669195][ T8723] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.677159][ T8723] Call Trace: [ 67.680481][ T8723] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.686703][ T8723] kvm_apic_set_irq+0x10b/0x170 [ 67.691533][ T8723] kvm_hv_process_stimers+0xd55/0x1a10 [ 67.697032][ T8723] ? kvm_hv_irq_routing_update+0x410/0x410 [ 67.702819][ T8723] ? lock_acquire+0x190/0x410 [ 67.707477][ T8723] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.713695][ T8723] ? __kasan_check_write+0x14/0x20 [ 67.718783][ T8723] vcpu_enter_guest+0x4d2/0x6200 [ 67.723700][ T8723] ? mark_held_locks+0xf0/0xf0 [ 67.728455][ T8723] ? handle_emulation_failure+0x4e0/0x4e0 [ 67.734162][ T8723] ? lock_acquire+0x190/0x410 [ 67.738843][ T8723] ? kvm_check_async_pf_completion+0x2d8/0x440 [ 67.745042][ T8723] kvm_arch_vcpu_ioctl_run+0x424/0x1750 [ 67.750573][ T8723] ? kvm_arch_vcpu_ioctl_run+0x424/0x1750 [ 67.756274][ T8723] kvm_vcpu_ioctl+0x4dc/0xf50 [ 67.760932][ T8723] ? kvm_write_guest_cached+0x40/0x40 [ 67.766287][ T8723] ? tomoyo_path_number_perm+0x263/0x520 [ 67.771905][ T8723] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 67.777693][ T8723] ? kvm_write_guest_cached+0x40/0x40 [ 67.783040][ T8723] do_vfs_ioctl+0xdb6/0x13e0 [ 67.787604][ T8723] ? ioctl_preallocate+0x210/0x210 [ 67.792708][ T8723] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 67.798402][ T8723] ? __fget_light+0x1a9/0x230 [ 67.803069][ T8723] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 67.809300][ T8723] ? tomoyo_file_ioctl+0x23/0x30 [ 67.814213][ T8723] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.820450][ T8723] ? security_file_ioctl+0x8d/0xc0 [ 67.825549][ T8723] ksys_ioctl+0xab/0xd0 [ 67.829707][ T8723] __x64_sys_ioctl+0x73/0xb0 [ 67.834309][ T8723] do_syscall_64+0xfa/0x760 [ 67.838822][ T8723] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.844709][ T8723] RIP: 0033:0x442a19 [ 67.848585][ T8723] 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 [ 67.868176][ T8723] RSP: 002b:00007ffc20720ba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 67.876563][ T8723] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000442a19 [ 67.884517][ T8723] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 67.892467][ T8723] RBP: 00000000006cd018 R08: 00000000004002c8 R09: 00000000004002c8 [ 67.900415][ T8723] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000403ac0 [ 67.908362][ T8723] R13: 0000000000403b50 R14: 0000000000000000 R15: 0000000000000000 [ 67.916313][ T8723] Modules linked in: [ 67.920679][ T8723] ---[ end trace 593a995dac3769f4 ]--- [ 67.926209][ T8723] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 67.931840][ T8723] 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 [ 67.951559][ T8723] RSP: 0018:ffff888090fe7820 EFLAGS: 00010202 [ 67.957649][ T8723] RAX: dffffc0000000000 RBX: ffff888090fe7958 RCX: 0000000000000000 [ 67.965604][ T8723] RDX: 0000000000000013 RSI: ffffffff8115d8fa RDI: 0000000000000000 [ 67.973613][ T8723] RBP: ffff888090fe7878 R08: 0000000000000000 R09: 0000000000000000 [ 67.982516][ T8723] R10: fffff52000be9c70 R11: ffffc90005f4e383 R12: 0000000000000000 [ 67.990634][ T8723] R13: 0000000000000000 R14: 0000000000000000 R15: ffff888099aa2ff0 [ 67.998632][ T8723] FS: 00005555556ac880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 68.008283][ T8723] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.014849][ T8723] CR2: 0000000000000000 CR3: 000000009a1b6000 CR4: 00000000001426e0 [ 68.022852][ T8723] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.030881][ T8723] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.038938][ T8723] Kernel panic - not syncing: Fatal exception [ 68.046574][ T8723] Kernel Offset: disabled [ 68.050908][ T8723] Rebooting in 86400 seconds..