[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 55.080624][ T26] audit: type=1800 audit(1567654253.048:25): pid=8592 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 55.121770][ T26] audit: type=1800 audit(1567654253.048:26): pid=8592 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 55.157587][ T26] audit: type=1800 audit(1567654253.048:27): pid=8592 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 '10.128.10.54' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 63.640693][ T8744] 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. [ 63.672087][ T8744] kvm [8744]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x20 [ 63.681590][ T8744] kvm [8744]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x40 [ 63.691024][ T8744] kvm [8744]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x60 [ 63.700398][ T8744] kvm [8744]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x80 [ 63.709990][ T8744] kvm [8744]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x94 [ 63.719323][ T8744] kvm [8744]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x48c [ 63.728740][ T8744] kvm [8744]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x4ac [ 63.738297][ T8744] kvm [8744]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000005 data 0x1520 [ 63.747837][ T8744] kvm [8744]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000006 data 0x15d4 [ 63.757309][ T8744] kvm [8744]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000007 data 0x15c4 [ 63.770842][ T8744] kasan: CONFIG_KASAN_INLINE enabled [ 63.776718][ T8744] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 63.784839][ T8744] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 63.791771][ T8744] CPU: 0 PID: 8744 Comm: syz-executor582 Not tainted 5.3.0-rc6-next-20190830 #75 [ 63.800869][ T8744] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.810917][ T8744] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 63.816536][ T8744] 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 [ 63.836114][ T8744] RSP: 0018:ffff88809256f820 EFLAGS: 00010202 [ 63.842329][ T8744] RAX: dffffc0000000000 RBX: ffff88809256f958 RCX: 0000000000000000 [ 63.850624][ T8744] RDX: 0000000000000013 RSI: ffffffff8115d8fa RDI: 0000000000000000 [ 63.858598][ T8744] RBP: ffff88809256f878 R08: 0000000000000000 R09: 0000000000000000 [ 63.866561][ T8744] R10: fffff52000be8c70 R11: ffffc90005f46383 R12: 0000000000000000 [ 63.874525][ T8744] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88808f41aff0 [ 63.882477][ T8744] FS: 000055555620b880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 63.891471][ T8744] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.898033][ T8744] CR2: 0000000000000000 CR3: 00000000a7907000 CR4: 00000000001426f0 [ 63.905981][ T8744] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.913934][ T8744] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.921879][ T8744] Call Trace: [ 63.925162][ T8744] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 63.931381][ T8744] kvm_apic_set_irq+0x10b/0x170 [ 63.936218][ T8744] kvm_hv_process_stimers+0xd55/0x1a10 [ 63.941749][ T8744] ? kvm_hv_irq_routing_update+0x410/0x410 [ 63.947532][ T8744] ? lock_acquire+0x190/0x410 [ 63.952184][ T8744] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 63.958408][ T8744] ? __kasan_check_write+0x14/0x20 [ 63.963502][ T8744] vcpu_enter_guest+0x4d2/0x6200 [ 63.968415][ T8744] ? mark_held_locks+0xf0/0xf0 [ 63.973155][ T8744] ? handle_emulation_failure+0x4e0/0x4e0 [ 63.978847][ T8744] ? lock_acquire+0x190/0x410 [ 63.983499][ T8744] ? kvm_check_async_pf_completion+0x2d8/0x440 [ 63.989629][ T8744] kvm_arch_vcpu_ioctl_run+0x424/0x1750 [ 63.995150][ T8744] ? kvm_arch_vcpu_ioctl_run+0x424/0x1750 [ 64.000855][ T8744] kvm_vcpu_ioctl+0x4dc/0xf50 [ 64.005508][ T8744] ? kvm_write_guest_cached+0x40/0x40 [ 64.010854][ T8744] ? tomoyo_path_number_perm+0x263/0x520 [ 64.016460][ T8744] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 64.022247][ T8744] ? kvm_write_guest_cached+0x40/0x40 [ 64.027593][ T8744] do_vfs_ioctl+0xdb6/0x13e0 [ 64.032157][ T8744] ? ioctl_preallocate+0x210/0x210 [ 64.037245][ T8744] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 64.042948][ T8744] ? __fget_light+0x1a9/0x230 [ 64.047603][ T8744] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 64.053829][ T8744] ? tomoyo_file_ioctl+0x23/0x30 [ 64.058741][ T8744] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.064959][ T8744] ? security_file_ioctl+0x8d/0xc0 [ 64.070045][ T8744] ksys_ioctl+0xab/0xd0 [ 64.074174][ T8744] __x64_sys_ioctl+0x73/0xb0 [ 64.078745][ T8744] do_syscall_64+0xfa/0x760 [ 64.084615][ T8744] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 64.090480][ T8744] RIP: 0033:0x442a19 [ 64.094349][ T8744] 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 [ 64.113939][ T8744] RSP: 002b:00007ffdbce27b88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 64.122326][ T8744] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000442a19 [ 64.130271][ T8744] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 64.138227][ T8744] RBP: 00000000006cd018 R08: 00000000004002c8 R09: 00000000004002c8 [ 64.146284][ T8744] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000403ac0 [ 64.154231][ T8744] R13: 0000000000403b50 R14: 0000000000000000 R15: 0000000000000000 [ 64.162180][ T8744] Modules linked in: [ 64.166241][ T8744] ---[ end trace f4bf0fced964c88f ]--- [ 64.171849][ T8744] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 64.177463][ T8744] 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 [ 64.197095][ T8744] RSP: 0018:ffff88809256f820 EFLAGS: 00010202 [ 64.203174][ T8744] RAX: dffffc0000000000 RBX: ffff88809256f958 RCX: 0000000000000000 [ 64.211139][ T8744] RDX: 0000000000000013 RSI: ffffffff8115d8fa RDI: 0000000000000000 [ 64.219120][ T8744] RBP: ffff88809256f878 R08: 0000000000000000 R09: 0000000000000000 [ 64.227132][ T8744] R10: fffff52000be8c70 R11: ffffc90005f46383 R12: 0000000000000000 [ 64.235129][ T8744] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88808f41aff0 [ 64.243115][ T8744] FS: 000055555620b880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 64.252053][ T8744] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.258621][ T8744] CR2: 0000000000000000 CR3: 00000000a7907000 CR4: 00000000001426f0 [ 64.266623][ T8744] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.274605][ T8744] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.282600][ T8744] Kernel panic - not syncing: Fatal exception [ 64.290094][ T8744] Kernel Offset: disabled [ 64.294419][ T8744] Rebooting in 86400 seconds..