[ 83.080192][ T27] audit: type=1400 audit(1576197948.985:38): avc: denied { watch } for pid=9497 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 83.230580][ T27] audit: type=1800 audit(1576197949.185:39): pid=9396 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 [ 83.252375][ T27] audit: type=1800 audit(1576197949.185:40): pid=9396 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 [ 83.840426][ T27] audit: type=1400 audit(1576197949.795:41): avc: denied { map } for pid=9575 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.193' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 884.516966][ T27] audit: type=1400 audit(1576198750.475:42): avc: denied { map } for pid=9587 comm="syz-executor858" path="/root/syz-executor858015726" 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 executing program executing program executing program executing program executing program executing program executing program [ 884.549901][ T27] audit: type=1400 audit(1576198750.485:43): avc: denied { open } for pid=9594 comm="syz-executor858" 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 [ 884.573986][ T27] audit: type=1400 audit(1576198750.485:44): avc: denied { kernel } for pid=9594 comm="syz-executor858" 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 [ 884.605576][ C1] hrtimer: interrupt took 27248 ns executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 992.213543][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 992.220537][ C1] (detected by 1, t=10502 jiffies, g=9565, q=112) [ 992.227047][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295036372-4295025870), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 992.240391][ C1] syz-executor858 R running task 26712 10362 9589 0x00004000 [ 992.248358][ C1] Call Trace: [ 992.251645][ C1] [ 992.254585][ C1] sched_show_task.cold+0x2ee/0x35d [ 992.259819][ C1] ? can_nice.part.0+0x20/0x20 [ 992.264651][ C1] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 992.270433][ C1] rcu_sched_clock_irq.cold+0xaf4/0xc02 [ 992.276043][ C1] update_process_times+0x2d/0x70 [ 992.281116][ C1] tick_sched_handle+0xa2/0x190 [ 992.286018][ C1] tick_sched_timer+0x53/0x140 [ 992.290778][ C1] __hrtimer_run_queues+0x364/0xe40 [ 992.295972][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 992.301250][ C1] ? hrtimer_init+0x330/0x330 [ 992.305924][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 992.311720][ C1] ? ktime_get_update_offsets_now+0x2ce/0x430 [ 992.317913][ C1] hrtimer_interrupt+0x314/0x770 [ 992.323024][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 992.328585][ C1] apic_timer_interrupt+0xf/0x20 [ 992.333510][ C1] [ 992.336446][ C1] RIP: 0010:mutex_unlock+0xd/0x30 [ 992.341474][ C1] Code: c7 c7 20 c5 63 8b e8 f2 38 eb f9 e9 03 fe ff ff 4c 89 ff e8 05 39 eb f9 e9 8c fb ff ff 55 65 8b 05 00 91 3a 78 a9 00 ff 1f 00 <48> 89 e5 75 0b 48 8b 75 08 e8 45 f9 ff ff 5d c3 0f 0b 48 8b 75 08 [ 992.361183][ C1] RSP: 0018:ffffc90002d577f8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 992.369589][ C1] RAX: 0000000080000000 RBX: 0000000000005401 RCX: ffffffff83dc49dc [ 992.377554][ C1] RDX: 0000000000000000 RSI: ffffffff83dc49e9 RDI: ffff88809fd45138 [ 992.385521][ C1] RBP: ffffc90002d57818 R08: ffff8880a469e0c0 R09: ffffed1013fa8a01 [ 992.393483][ C1] R10: ffffed1013fa8a00 R11: ffff88809fd45007 R12: ffff88809fd45000 [ 992.401446][ C1] R13: ffff8880938b7800 R14: ffff888218b93900 R15: dffffc0000000000 [ 992.409486][ C1] ? tty_unlock+0x3c/0xa0 [ 992.413808][ C1] ? tty_unlock+0x49/0xa0 [ 992.418134][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 992.424362][ C1] ? tty_unlock+0x56/0xa0 [ 992.428725][ C1] tty_open+0x882/0xbb0 [ 992.432883][ C1] ? tty_init_dev+0x470/0x470 [ 992.437585][ C1] ? do_raw_spin_unlock+0x178/0x270 [ 992.442779][ C1] ? tty_init_dev+0x470/0x470 [ 992.447473][ C1] chrdev_open+0x245/0x6b0 [ 992.451905][ C1] ? cdev_put.part.0+0x50/0x50 [ 992.456691][ C1] ? security_file_open+0x87/0x300 [ 992.461853][ C1] do_dentry_open+0x4e6/0x1380 [ 992.466610][ C1] ? security_inode_permission+0xc1/0x100 [ 992.472317][ C1] ? cdev_put.part.0+0x50/0x50 [ 992.477081][ C1] ? chown_common+0x5c0/0x5c0 [ 992.481752][ C1] ? inode_permission+0xb4/0x520 [ 992.486690][ C1] vfs_open+0xa0/0xd0 [ 992.490705][ C1] path_openat+0x10df/0x4500 [ 992.495315][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 992.500764][ C1] ? lockdep_hardirqs_on+0x421/0x5e0 [ 992.506046][ C1] ? retint_kernel+0x2b/0x2b [ 992.510640][ C1] ? path_lookupat.isra.0+0x8d0/0x8d0 [ 992.515999][ C1] ? retint_kernel+0x2b/0x2b [ 992.520598][ C1] do_filp_open+0x1a1/0x280 [ 992.525113][ C1] ? may_open_dev+0x100/0x100 [ 992.529795][ C1] ? do_raw_spin_unlock+0x178/0x270 [ 992.534999][ C1] do_sys_open+0x3fe/0x5d0 [ 992.539408][ C1] ? filp_open+0x80/0x80 [ 992.543646][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 992.549137][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 992.554613][ C1] ? do_syscall_64+0x26/0x790 [ 992.559289][ C1] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 992.565359][ C1] ? do_syscall_64+0x26/0x790 [ 992.570039][ C1] __x64_sys_openat+0x9d/0x100 [ 992.574800][ C1] do_syscall_64+0xfa/0x790 [ 992.579298][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 992.585181][ C1] RIP: 0033:0x4468f9 [ 992.589247][ C1] Code: e8 0c 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 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 992.608844][ C1] RSP: 002b:00007f2706ab2db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 992.617248][ C1] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004468f9 [ 992.625212][ C1] RDX: 0000000000000000 RSI: 0000000020000380 RDI: ffffffffffffff9c [ 992.633179][ C1] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 992.641158][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 992.649129][ C1] R13: 00007ffd66fb241f R14: 00007f2706ab39c0 R15: 000000000000002d [ 992.657119][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g9565 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 992.668202][ C1] rcu: RCU grace-period kthread stack dump: [ 992.674083][ C1] rcu_preempt R running task 29272 10 2 0x80004000 [ 992.681974][ C1] Call Trace: [ 992.685268][ C1] __schedule+0x934/0x1f90 [ 992.689684][ C1] ? __sched_text_start+0x8/0x8 [ 992.694526][ C1] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 992.700322][ C1] ? schedule_timeout+0x47c/0xc50 [ 992.705344][ C1] ? lockdep_hardirqs_on+0x421/0x5e0 [ 992.710626][ C1] schedule+0xdc/0x2b0 [ 992.714692][ C1] schedule_timeout+0x486/0xc50 [ 992.719537][ C1] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 992.725336][ C1] ? usleep_range+0x170/0x170 [ 992.730081][ C1] ? trace_hardirqs_on+0x67/0x240 [ 992.735108][ C1] ? __next_timer_interrupt+0x1a0/0x1a0 [ 992.740652][ C1] ? swake_up_one+0x60/0x60 [ 992.745159][ C1] rcu_gp_kthread+0x9b2/0x18d0 [ 992.749925][ C1] ? rcu_barrier+0x350/0x350 [ 992.754525][ C1] ? trace_hardirqs_on+0x67/0x240 [ 992.759549][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 992.765846][ C1] ? __kthread_parkme+0x108/0x1c0 [ 992.770884][ C1] ? __kasan_check_read+0x11/0x20 [ 992.775904][ C1] kthread+0x361/0x430 [ 992.779979][ C1] ? rcu_barrier+0x350/0x350 [ 992.784562][ C1] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 992.790285][ C1] ret_from_fork+0x24/0x30