[....] Starting enhanced syslogd: rsyslogd[ 13.989091] audit: type=1400 audit(1516669830.705:5): avc: denied { syslog } for pid=3502 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.643274] audit: type=1400 audit(1516669835.359:6): avc: denied { map } for pid=3641 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 '10.128.0.58' (ECDSA) to the list of known hosts. [ 24.998914] audit: type=1400 audit(1516669841.715:7): avc: denied { map } for pid=3655 comm="syzkaller502640" path="/root/syzkaller502640383" dev="sda1" ino=16481 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 unlink(./0/file0/ptmx) failed (errno 1) sandbox fork failed (errno 12) [ 25.183281] audit: type=1400 audit(1516669841.899:8): avc: denied { create } for pid=3672 comm="syzkaller502640" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 25.207479] audit: type=1400 audit(1516669841.903:9): avc: denied { write } for pid=3672 comm="syzkaller502640" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 executing program unlink(./0/file0/ptmx) failed (errno 1) sandbox fork failed (errno 12) executing program unlink(./0/file0/ptmx) failed (errno 1) sandbox fork failed (errno 12) executing program unlink(./0/file0/ptmx) failed (errno 1) sandbox fork failed (errno 12) executing program unlink(./0/file0/ptmx) failed (errno 1) executing program sandbox fork failed (errno 12) unlink(./0/file0/ptmx) failed (errno 1) executing program sandbox fork failed (errno 12) unlink(./0/file0/ptmx) failed (errno 1) sandbox fork failed (errno 12) executing program unlink(./0/file0/ptmx) failed (errno 1) sandbox fork failed (errno 12) [ 26.986182] ------------[ cut here ]------------ [ 26.991049] workqueue: WQ_MEM_RECLAIM hwsim_wq:destroy_radio is flushing !WQ_MEM_RECLAIM events_highpri:flush_backlog [ 26.991093] WARNING: CPU: 0 PID: 3706 at kernel/workqueue.c:2439 check_flush_dependency+0x239/0x380 [ 27.012473] Kernel panic - not syncing: panic_on_warn set ... [ 27.012473] [ 27.019808] CPU: 0 PID: 3706 Comm: kworker/0:5 Not tainted 4.15.0-rc9+ #184 [ 27.026883] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.036218] Workqueue: hwsim_wq destroy_radio [ 27.040687] Call Trace: [ 27.043256] dump_stack+0x194/0x257 [ 27.046867] ? arch_local_irq_restore+0x53/0x53 [ 27.051529] ? vsnprintf+0x1ed/0x1900 [ 27.055767] panic+0x1e4/0x41c [ 27.058939] ? refcount_error_report+0x214/0x214 [ 27.063670] ? show_regs_print_info+0x18/0x18 [ 27.068150] ? __warn+0x1c1/0x200 [ 27.071594] ? check_flush_dependency+0x239/0x380 [ 27.076411] __warn+0x1dc/0x200 [ 27.079666] ? console_unlock+0x983/0xd80 [ 27.083789] ? check_flush_dependency+0x239/0x380 [ 27.088613] report_bug+0x211/0x2d0 [ 27.092225] fixup_bug.part.11+0x37/0x80 [ 27.096265] do_error_trap+0x2d7/0x3e0 [ 27.100129] ? __down_trylock_console_sem+0x10d/0x1e0 [ 27.105300] ? math_error+0x400/0x400 [ 27.109077] ? vprintk_emit+0x3ea/0x590 [ 27.113039] ? dev_get_by_index+0x170/0x170 [ 27.117338] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.122164] ? dev_get_by_index+0x170/0x170 [ 27.127419] do_invalid_op+0x1b/0x20 [ 27.131112] invalid_op+0x22/0x40 [ 27.134542] RIP: 0010:check_flush_dependency+0x239/0x380 [ 27.141267] RSP: 0018:ffff8801d7c2ed78 EFLAGS: 00010082 [ 27.146956] RAX: dffffc0000000008 RBX: ffff8801d42ca540 RCX: ffffffff8159ebae [ 27.154208] RDX: 0000000000000000 RSI: 1ffff1003af85d6a RDI: ffff8801d842eb80 [ 27.161454] RBP: ffff8801d7c2eda8 R08: 0000000000000000 R09: 1ffff1003af85d3c [ 27.168698] R10: ffff8801d7c2ec70 R11: 0000000000000005 R12: ffff8801dac14b70 [ 27.175943] R13: ffffffff8437cb60 R14: ffff8801c3368d00 R15: 0000000000000000 [ 27.183543] ? dev_get_by_index+0x170/0x170 [ 27.187849] ? vprintk_func+0x5e/0xc0 [ 27.191635] ? check_flush_dependency+0x239/0x380 [ 27.196458] flush_work+0x2f7/0x8f0 [ 27.200078] ? workqueue_congested+0x350/0x350 [ 27.204638] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.209635] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 27.214388] ? retint_kernel+0x10/0x10 [ 27.218265] ? _find_next_bit+0xee/0x120 [ 27.222389] ? queue_work_on+0xf7/0x1c0 [ 27.226343] ? find_next_bit+0x27/0x30 [ 27.230217] rollback_registered_many+0x672/0xdf0 [ 27.235044] ? netdev_master_upper_dev_link+0x50/0x50 [ 27.240232] ? ieee80211_remove_interfaces+0x4a7/0x990 [ 27.245503] ? lock_downgrade+0x980/0x980 [ 27.249634] ? _raw_spin_unlock+0x22/0x30 [ 27.253791] unregister_netdevice_many.part.110+0x87/0x420 [ 27.259391] ? unregister_netdev+0x30/0x30 [ 27.263600] ? wait_for_completion+0x770/0x770 [ 27.268177] ? unregister_netdevice_queue+0x290/0x5d0 [ 27.273345] ? debug_object_free+0x2f1/0x5a0 [ 27.277732] ? rollback_registered+0x3c0/0x3c0 [ 27.282311] unregister_netdevice_many+0xbb/0x100 [ 27.287131] ? unregister_netdevice_many.part.110+0x420/0x420 [ 27.293005] ieee80211_remove_interfaces+0x4b3/0x990 [ 27.298082] ? synchronize_sched.part.64+0xac/0x100 [ 27.303083] ? ieee80211_sdata_stop+0x70/0x70 [ 27.307557] ? trace_raw_output_rcu_utilization+0xb0/0xb0 [ 27.313080] ? __might_sleep+0x95/0x190 [ 27.317557] ? synchronize_sched+0x76/0xf0 [ 27.323423] ? raw_notifier_call_chain+0x40/0x40 [ 27.328181] ieee80211_unregister_hw+0x4c/0x270 [ 27.332834] mac80211_hwsim_del_radio+0x1ee/0x3b0 [ 27.337669] ? hwsim_mcast_config_msg+0x100/0x100 [ 27.342501] destroy_radio+0x9d/0x100 [ 27.346281] process_one_work+0xbbf/0x1b10 [ 27.350492] ? lock_downgrade+0x980/0x980 [ 27.354630] ? pwq_dec_nr_in_flight+0x450/0x450 [ 27.359277] ? check_noncircular+0x20/0x20 [ 27.363486] ? find_held_lock+0x35/0x1d0 [ 27.367529] ? trace_hardirqs_off+0xd/0x10 [ 27.371740] ? _raw_spin_unlock_irqrestore+0xa6/0xba [ 27.376839] ? find_held_lock+0x35/0x1d0 [ 27.380888] ? __wake_up_common_lock+0x1c2/0x310 [ 27.385624] ? lock_downgrade+0x980/0x980 [ 27.389759] ? do_wait_intr_irq+0x3e0/0x3e0 [ 27.394059] ? do_raw_spin_trylock+0x190/0x190 [ 27.398619] ? lock_timer_base+0xaf/0x280 [ 27.402754] ? trace_hardirqs_off+0xd/0x10 [ 27.406965] ? _raw_spin_unlock_irqrestore+0xa6/0xba [ 27.412049] ? __wake_up_common_lock+0x1c2/0x310 [ 27.416783] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.421780] ? __wake_up_common+0x780/0x780 [ 27.426082] ? try_to_del_timer_sync+0xe0/0x130 [ 27.430766] worker_thread+0x223/0x1990 [ 27.435192] ? process_one_work+0x1b10/0x1b10 [ 27.441062] ? _raw_spin_unlock_irq+0x27/0x70 [ 27.445538] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.450532] ? trace_hardirqs_on+0xd/0x10 [ 27.454661] ? finish_task_switch+0x1d3/0x740 [ 27.459148] ? finish_task_switch+0x1aa/0x740 [ 27.463638] ? copy_overflow+0x20/0x20 [ 27.467529] ? __schedule+0x8f3/0x2060 [ 27.471440] ? find_held_lock+0x35/0x1d0 [ 27.475489] ? find_held_lock+0x35/0x1d0 [ 27.479539] ? complete+0x62/0x80 [ 27.482982] ? __schedule+0x2060/0x2060 [ 27.486930] ? do_wait_intr_irq+0x3e0/0x3e0 [ 27.491231] ? __lockdep_init_map+0xe4/0x650 [ 27.495628] ? do_raw_spin_trylock+0x190/0x190 [ 27.500189] ? lockdep_init_map+0x9/0x10 [ 27.504225] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 27.509317] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.515712] ? trace_hardirqs_on+0xd/0x10 [ 27.519837] ? __kthread_parkme+0x175/0x240 [ 27.524140] kthread+0x33c/0x400 [ 27.527483] ? process_one_work+0x1b10/0x1b10 [ 27.531953] ? kthread_stop+0x7a0/0x7a0 [ 27.535910] ret_from_fork+0x3a/0x50 [ 28.611471] Shutting down cpus with NMI [ 28.616463] Dumping ftrace buffer: [ 28.620138] (ftrace buffer empty) [ 28.623823] Kernel Offset: disabled [ 28.627426] Rebooting in 86400 seconds..