[ 98.756403][ T27] audit: type=1400 audit(1580633083.502:37): avc: denied { watch } for pid=10386 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1 [ 98.782795][ T27] audit: type=1400 audit(1580633083.502:38): avc: denied { watch } for pid=10386 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2232 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 99.042956][ T27] audit: type=1800 audit(1580633083.782:39): pid=10299 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 99.064766][ T27] audit: type=1800 audit(1580633083.792:40): pid=10299 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 102.678751][ T27] audit: type=1400 audit(1580633087.422:41): avc: denied { map } for pid=10477 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.198' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 733.658617][ T27] audit: type=1400 audit(1580633718.402:42): avc: denied { map } for pid=10489 comm="syz-executor543" path="/root/syz-executor543672262" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 733.689871][ T27] audit: type=1400 audit(1580633718.402:43): avc: denied { open } for pid=10498 comm="syz-executor543" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=perf_event permissive=1 [ 733.714077][ T27] audit: type=1400 audit(1580633718.402:44): avc: denied { confidentiality } for pid=10498 comm="syz-executor543" lockdown_reason="unsafe use of perf" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=lockdown permissive=1 [ 733.778721][T10497] 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. [ 733.825670][ C0] hrtimer: interrupt took 45430 ns [ 839.223284][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 839.230397][ C1] (detected by 1, t=10502 jiffies, g=10641, q=2) [ 839.236842][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4295021069-4295010566), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 839.250308][ C1] syz-executor543 R running task 27000 10496 10495 0x00000000 [ 839.258215][ C1] Call Trace: [ 839.261494][ C1] [ 839.264483][ C1] sched_show_task.cold+0x2ee/0x35d [ 839.269696][ C1] ? can_nice.part.0+0x20/0x20 [ 839.274562][ C1] rcu_sched_clock_irq.cold+0xb23/0xc37 [ 839.280179][ C1] update_process_times+0x2d/0x70 [ 839.285257][ C1] tick_sched_handle+0xa2/0x190 [ 839.290123][ C1] tick_sched_timer+0x53/0x140 [ 839.294896][ C1] __hrtimer_run_queues+0x364/0xe40 [ 839.300108][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 839.305417][ C1] ? hrtimer_init+0x330/0x330 [ 839.310167][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 839.315903][ C1] ? ktime_get_update_offsets_now+0x2ce/0x430 [ 839.321988][ C1] hrtimer_interrupt+0x314/0x770 [ 839.327058][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 839.332644][ C1] apic_timer_interrupt+0xf/0x20 [ 839.337576][ C1] [ 839.340603][ C1] RIP: 0010:lock_acquire+0x20b/0x410 [ 839.345915][ C1] Code: 94 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 d3 01 00 00 48 83 3d 19 cf 58 08 00 0f 84 53 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b [ 839.365614][ C1] RSP: 0018:ffffc90001f57ad0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 839.374038][ C1] RAX: 1ffffffff136753f RBX: ffff888089b4a140 RCX: ffffffff815a7ff0 [ 839.382029][ C1] RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000286 [ 839.390008][ C1] RBP: ffffc90001f57b18 R08: 1ffffffff16a137b R09: fffffbfff16a137c [ 839.397984][ C1] R10: ffff888089b4aa00 R11: ffff888089b4a140 R12: ffffc90001fcae18 [ 839.405963][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 839.413961][ C1] ? __lock_acquire+0x8a0/0x4a00 [ 839.419020][ C1] vcpu_enter_guest+0x323d/0x6100 [ 839.424121][ C1] ? vcpu_enter_guest+0x3204/0x6100 [ 839.429789][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 839.435260][ C1] ? lockdep_hardirqs_on+0x421/0x5e0 [ 839.440559][ C1] ? retint_kernel+0x2b/0x2b [ 839.445163][ C1] ? kvm_vcpu_reload_apic_access_page+0x380/0x380 [ 839.451585][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 839.457125][ C1] ? __this_cpu_preempt_check+0x8a/0x190 [ 839.462772][ C1] ? __this_cpu_preempt_check+0x35/0x190 [ 839.468412][ C1] ? retint_kernel+0x2b/0x2b [ 839.473037][ C1] ? kvm_arch_vcpu_ioctl_run+0x41a/0x17b0 [ 839.478770][ C1] kvm_arch_vcpu_ioctl_run+0x430/0x17b0 [ 839.484325][ C1] ? kvm_arch_vcpu_ioctl_run+0x430/0x17b0 [ 839.490122][ C1] kvm_vcpu_ioctl+0x4dc/0xfc0 [ 839.494810][ C1] ? kvm_set_memory_region+0x50/0x50 [ 839.500173][ C1] ? ioctl_file_clone+0x180/0x180 [ 839.505214][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 839.510678][ C1] ? __this_cpu_preempt_check+0x8a/0x190 [ 839.516318][ C1] ? __this_cpu_preempt_check+0x35/0x190 [ 839.521968][ C1] ? retint_kernel+0x2b/0x2b [ 839.526588][ C1] ? kvm_set_memory_region+0x50/0x50 [ 839.531883][ C1] ksys_ioctl+0x123/0x180 [ 839.536230][ C1] __x64_sys_ioctl+0x73/0xb0 [ 839.540825][ C1] ? do_syscall_64+0xea/0x790 [ 839.545542][ C1] do_syscall_64+0xfa/0x790 [ 839.550066][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 839.555962][ C1] RIP: 0033:0x4478a9 [ 839.559874][ C1] Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 cb c4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 839.579480][ C1] RSP: 002b:00007ffdda97c7c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 839.587891][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004478a9 [ 839.595860][ C1] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000009 [ 839.603843][ C1] RBP: 00000000006d2018 R08: 00000000004002e0 R09: 00000000004002e0 [ 839.611829][ C1] R10: 00000000004002e0 R11: 0000000000000246 R12: 0000000000404200 [ 839.619804][ C1] R13: 0000000000404290 R14: 0000000000000000 R15: 0000000000000000 [ 839.627819][ C1] rcu: rcu_preempt kthread starved for 10542 jiffies! g10641 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 839.638999][ C1] rcu: RCU grace-period kthread stack dump: [ 839.644922][ C1] rcu_preempt R running task 29224 10 2 0x80004000 [ 839.652821][ C1] Call Trace: [ 839.656122][ C1] __schedule+0x934/0x1f90 [ 839.660551][ C1] ? __sched_text_start+0x8/0x8 [ 839.665404][ C1] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 839.671208][ C1] ? schedule_timeout+0x47c/0xc50 [ 839.676251][ C1] ? lockdep_hardirqs_on+0x421/0x5e0 [ 839.681553][ C1] schedule+0xdc/0x2b0 [ 839.685643][ C1] schedule_timeout+0x486/0xc50 [ 839.690567][ C1] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 839.696402][ C1] ? usleep_range+0x170/0x170 [ 839.701140][ C1] ? trace_hardirqs_on+0x67/0x240 [ 839.706195][ C1] ? __next_timer_interrupt+0x1a0/0x1a0 [ 839.711845][ C1] ? swake_up_one+0x60/0x60 [ 839.716370][ C1] rcu_gp_kthread+0xa10/0x1940 [ 839.721156][ C1] ? rcu_note_context_switch+0x1980/0x1980 [ 839.726977][ C1] ? trace_hardirqs_on+0x67/0x240 [ 839.732023][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 839.738324][ C1] ? __kthread_parkme+0x108/0x1c0 [ 839.743402][ C1] ? __kasan_check_read+0x11/0x20 [ 839.748441][ C1] kthread+0x361/0x430 [ 839.752517][ C1] ? rcu_note_context_switch+0x1980/0x1980 [ 839.758327][ C1] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 839.764055][ C1] ret_from_fork+0x24/0x30