[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 67.697402][ T26] kauditd_printk_skb: 7 callbacks suppressed [ 67.697412][ T26] audit: type=1800 audit(1567655534.083:29): pid=9710 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 67.723978][ T26] audit: type=1800 audit(1567655534.083:30): pid=9710 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.176' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 75.706110][ T9865] 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. [ 75.734059][ T9865] kvm [9865]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x20 [ 75.743657][ T9865] kvm [9865]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x40 [ 75.753221][ T9865] kvm [9865]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x60 [ 75.762599][ T9865] kvm [9865]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x80 [ 75.771929][ T9865] kvm [9865]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x94 [ 75.781336][ T9865] kvm [9865]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x48c [ 75.790757][ T9865] kvm [9865]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x4ac [ 75.800206][ T9865] kvm [9865]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000005 data 0x1520 [ 75.809987][ T9865] kvm [9865]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000006 data 0x15d4 [ 75.819463][ T9865] kvm [9865]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000007 data 0x15c4 [ 75.832890][ T9865] kasan: CONFIG_KASAN_INLINE enabled [ 75.838161][ T9865] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 75.846318][ T9865] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 75.853260][ T9865] CPU: 1 PID: 9865 Comm: syz-executor239 Not tainted 5.3.0-rc7+ #0 [ 75.861142][ T9865] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.871215][ T9865] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 75.876825][ T9865] Code: c0 44 89 45 d4 4c 89 4d c8 e8 96 db 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 [ 75.896512][ T9865] RSP: 0018:ffff888091c37820 EFLAGS: 00010202 [ 75.902733][ T9865] RAX: dffffc0000000000 RBX: ffff888091c37958 RCX: 0000000000000000 [ 75.910679][ T9865] RDX: 0000000000000013 RSI: ffffffff811599ba RDI: 0000000000000000 [ 75.918652][ T9865] RBP: ffff888091c37878 R08: 0000000000000000 R09: 0000000000000000 [ 75.926704][ T9865] R10: fffff52000be7870 R11: ffffc90005f3c383 R12: 0000000000000000 [ 75.934984][ T9865] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880935d2ff0 [ 75.942947][ T9865] FS: 000055555731a880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 75.951868][ T9865] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.958614][ T9865] CR2: 0000000000000000 CR3: 00000000a77ba000 CR4: 00000000001426e0 [ 75.966566][ T9865] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.974515][ T9865] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.983513][ T9865] Call Trace: [ 75.986789][ T9865] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.993024][ T9865] kvm_apic_set_irq+0x10b/0x170 [ 75.997860][ T9865] kvm_hv_process_stimers+0xd55/0x1a10 [ 76.003305][ T9865] ? kvm_hv_irq_routing_update+0x410/0x410 [ 76.009084][ T9865] ? lock_acquire+0x190/0x410 [ 76.013737][ T9865] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.019963][ T9865] ? __kasan_check_write+0x14/0x20 [ 76.025052][ T9865] vcpu_enter_guest+0x4d2/0x5e90 [ 76.029975][ T9865] ? mark_held_locks+0xf0/0xf0 [ 76.034711][ T9865] ? kvm_vcpu_ioctl+0x181/0xfd0 [ 76.039546][ T9865] ? handle_emulation_failure+0x4e0/0x4e0 [ 76.045238][ T9865] ? lock_acquire+0x190/0x410 [ 76.050544][ T9865] ? kvm_check_async_pf_completion+0x2d8/0x440 [ 76.056679][ T9865] kvm_arch_vcpu_ioctl_run+0x464/0x1750 [ 76.062200][ T9865] ? kvm_arch_vcpu_ioctl_run+0x464/0x1750 [ 76.067904][ T9865] kvm_vcpu_ioctl+0x4dc/0xfd0 [ 76.072564][ T9865] ? kvm_write_guest_cached+0x40/0x40 [ 76.077911][ T9865] ? tomoyo_path_number_perm+0x263/0x520 [ 76.083527][ T9865] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 76.089308][ T9865] ? put_unused_fd+0x62/0x80 [ 76.093888][ T9865] ? rwlock_bug.part.0+0x90/0x90 [ 76.098888][ T9865] ? put_unused_fd+0x4f/0x80 [ 76.103712][ T9865] ? kvm_write_guest_cached+0x40/0x40 [ 76.109068][ T9865] do_vfs_ioctl+0xdb6/0x13e0 [ 76.113741][ T9865] ? ioctl_preallocate+0x210/0x210 [ 76.118827][ T9865] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 76.124527][ T9865] ? __fget_light+0x1a9/0x230 [ 76.129183][ T9865] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 76.135405][ T9865] ? tomoyo_file_ioctl+0x23/0x30 [ 76.140317][ T9865] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.146574][ T9865] ? security_file_ioctl+0x8d/0xc0 [ 76.151664][ T9865] ksys_ioctl+0xab/0xd0 [ 76.155793][ T9865] __x64_sys_ioctl+0x73/0xb0 [ 76.160365][ T9865] do_syscall_64+0xfd/0x6a0 [ 76.164846][ T9865] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.170719][ T9865] RIP: 0033:0x442a19 [ 76.174610][ T9865] 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 [ 76.194199][ T9865] RSP: 002b:00007ffd39fb6ba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 76.202585][ T9865] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000442a19 [ 76.210627][ T9865] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 76.218592][ T9865] RBP: 00000000006cd018 R08: 00000000004002c8 R09: 00000000004002c8 [ 76.226539][ T9865] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000403ac0 [ 76.234483][ T9865] R13: 0000000000403b50 R14: 0000000000000000 R15: 0000000000000000 [ 76.242697][ T9865] Modules linked in: [ 76.246906][ T9865] ---[ end trace 3b2804fc9a2f7fff ]--- [ 76.252551][ T9865] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 76.258297][ T9865] Code: c0 44 89 45 d4 4c 89 4d c8 e8 96 db 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 [ 76.277939][ T9865] RSP: 0018:ffff888091c37820 EFLAGS: 00010202 [ 76.284083][ T9865] RAX: dffffc0000000000 RBX: ffff888091c37958 RCX: 0000000000000000 [ 76.292127][ T9865] RDX: 0000000000000013 RSI: ffffffff811599ba RDI: 0000000000000000 [ 76.300139][ T9865] RBP: ffff888091c37878 R08: 0000000000000000 R09: 0000000000000000 [ 76.308144][ T9865] R10: fffff52000be7870 R11: ffffc90005f3c383 R12: 0000000000000000 [ 76.316151][ T9865] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880935d2ff0 [ 76.324142][ T9865] FS: 000055555731a880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 76.333087][ T9865] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.339646][ T9865] CR2: 0000000000000000 CR3: 00000000a77ba000 CR4: 00000000001426e0 [ 76.347635][ T9865] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.355620][ T9865] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.363618][ T9865] Kernel panic - not syncing: Fatal exception [ 76.370728][ T9865] Kernel Offset: disabled [ 76.375274][ T9865] Rebooting in 86400 seconds..