[....] Starting enhanced syslogd: rsyslogd[ 13.210584] audit: type=1400 audit(1516668925.959:5): avc: denied { syslog } for pid=3507 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.305268] audit: type=1400 audit(1516668931.054:6): avc: denied { map } for pid=3645 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 '10.128.0.15' (ECDSA) to the list of known hosts. [ 107.906897] audit: type=1400 audit(1516669020.655:7): avc: denied { map } for pid=3662 comm="syzkaller466377" path="/root/syzkaller466377932" 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) [ 108.092779] audit: type=1400 audit(1516669020.841:8): avc: denied { create } for pid=3679 comm="syzkaller466377" 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 [ 108.116687] audit: type=1400 audit(1516669020.845:9): avc: denied { write } for pid=3679 comm="syzkaller466377" 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) 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) sandbox fork failed (errno 12) [ 109.858122] ------------[ cut here ]------------ [ 109.862943] workqueue: WQ_MEM_RECLAIM hwsim_wq:destroy_radio is flushing !WQ_MEM_RECLAIM events_highpri:flush_backlog [ 109.862977] WARNING: CPU: 1 PID: 23 at kernel/workqueue.c:2439 check_flush_dependency+0x239/0x380 [ 109.882659] Kernel panic - not syncing: panic_on_warn set ... [ 109.882659] [ 109.889991] CPU: 1 PID: 23 Comm: kworker/1:1 Not tainted 4.15.0-rc9+ #274 [ 109.896879] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 109.906202] Workqueue: hwsim_wq destroy_radio [ 109.910665] Call Trace: [ 109.913225] dump_stack+0x194/0x257 [ 109.916822] ? arch_local_irq_restore+0x53/0x53 [ 109.921463] ? vsnprintf+0x1ed/0x1900 [ 109.925235] panic+0x1e4/0x41c [ 109.928397] ? refcount_error_report+0x214/0x214 [ 109.933120] ? show_regs_print_info+0x18/0x18 [ 109.937589] ? __warn+0x1c1/0x200 [ 109.941021] ? check_flush_dependency+0x239/0x380 [ 109.945832] __warn+0x1dc/0x200 [ 109.949081] ? console_unlock+0x983/0xd80 [ 109.953201] ? check_flush_dependency+0x239/0x380 [ 109.958018] report_bug+0x211/0x2d0 [ 109.961621] fixup_bug.part.11+0x37/0x80 [ 109.965651] do_error_trap+0x2d7/0x3e0 [ 109.969505] ? __down_trylock_console_sem+0x10d/0x1e0 [ 109.974664] ? math_error+0x400/0x400 [ 109.978439] ? vprintk_emit+0x3ea/0x590 [ 109.982391] ? dev_get_by_index+0x170/0x170 [ 109.986681] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 109.991493] ? dev_get_by_index+0x170/0x170 [ 109.995783] do_invalid_op+0x1b/0x20 [ 109.999465] invalid_op+0x22/0x40 [ 110.002887] RIP: 0010:check_flush_dependency+0x239/0x380 [ 110.008300] RSP: 0018:ffff8801d98aed78 EFLAGS: 00010082 [ 110.013630] RAX: dffffc0000000008 RBX: ffff8801d43c2080 RCX: ffffffff8159ebae [ 110.020869] RDX: 0000000000000000 RSI: 1ffff1003b315d6a RDI: ffff8801d98b6e40 [ 110.028108] RBP: ffff8801d98aeda8 R08: 0000000000000000 R09: 1ffff1003b315d3c [ 110.035351] R10: ffff8801d98aec70 R11: 0000000000000005 R12: ffff8801dac14b70 [ 110.042589] R13: ffffffff8437cb60 R14: ffff8801d9826100 R15: 0000000000000000 [ 110.049833] ? dev_get_by_index+0x170/0x170 [ 110.054129] ? vprintk_func+0x5e/0xc0 [ 110.057902] ? check_flush_dependency+0x239/0x380 [ 110.062715] flush_work+0x2f7/0x8f0 [ 110.066310] ? print_irqtrace_events+0x270/0x270 [ 110.071037] ? workqueue_congested+0x350/0x350 [ 110.075591] ? lock_acquire+0x1d5/0x580 [ 110.079534] ? lock_acquire+0x1d5/0x580 [ 110.083478] ? rollback_registered_many+0x58b/0xdf0 [ 110.088471] ? mark_held_locks+0xaf/0x100 [ 110.092592] ? _find_next_bit+0xee/0x120 [ 110.096624] ? find_next_bit+0x27/0x30 [ 110.100491] rollback_registered_many+0x672/0xdf0 [ 110.105308] ? netdev_master_upper_dev_link+0x50/0x50 [ 110.110473] ? ieee80211_remove_interfaces+0x4a7/0x990 [ 110.115716] ? lock_downgrade+0x980/0x980 [ 110.119839] ? _raw_spin_unlock+0x22/0x30 [ 110.123973] unregister_netdevice_many.part.110+0x87/0x420 [ 110.129566] ? unregister_netdev+0x30/0x30 [ 110.133766] ? wait_for_completion+0x770/0x770 [ 110.138316] ? unregister_netdevice_queue+0x290/0x5d0 [ 110.143473] ? debug_object_free+0x2f1/0x5a0 [ 110.147850] ? rollback_registered+0x3c0/0x3c0 [ 110.152405] unregister_netdevice_many+0xbb/0x100 [ 110.157216] ? unregister_netdevice_many.part.110+0x420/0x420 [ 110.163076] ieee80211_remove_interfaces+0x4b3/0x990 [ 110.168154] ? synchronize_sched.part.64+0xac/0x100 [ 110.173146] ? ieee80211_sdata_stop+0x70/0x70 [ 110.177609] ? trace_raw_output_rcu_utilization+0xb0/0xb0 [ 110.183119] ? __might_sleep+0x95/0x190 [ 110.187067] ? synchronize_sched+0x76/0xf0 [ 110.191272] ? raw_notifier_call_chain+0x40/0x40 [ 110.196011] ieee80211_unregister_hw+0x4c/0x270 [ 110.200652] mac80211_hwsim_del_radio+0x1ee/0x3b0 [ 110.205463] ? hwsim_mcast_config_msg+0x100/0x100 [ 110.210284] destroy_radio+0x9d/0x100 [ 110.214053] process_one_work+0xbbf/0x1b10 [ 110.218255] ? trace_hardirqs_on+0xd/0x10 [ 110.222389] ? pwq_dec_nr_in_flight+0x450/0x450 [ 110.227035] ? __schedule+0x8f3/0x2060 [ 110.230889] ? update_curr+0x2e3/0xa60 [ 110.234751] ? check_noncircular+0x20/0x20 [ 110.238956] ? __lock_is_held+0xb6/0x140 [ 110.243010] ? lock_acquire+0x1d5/0x580 [ 110.246954] ? lock_acquire+0x1d5/0x580 [ 110.250896] ? worker_thread+0x4a3/0x1990 [ 110.255011] ? lock_downgrade+0x980/0x980 [ 110.259128] ? lock_release+0xa40/0xa40 [ 110.263071] ? check_noncircular+0x20/0x20 [ 110.267361] ? do_raw_spin_trylock+0x190/0x190 [ 110.271924] worker_thread+0x223/0x1990 [ 110.275882] ? process_one_work+0x1b10/0x1b10 [ 110.280348] ? _raw_spin_unlock_irq+0x27/0x70 [ 110.284811] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 110.289793] ? trace_hardirqs_on+0xd/0x10 [ 110.293912] ? _raw_spin_unlock_irq+0x27/0x70 [ 110.298378] ? finish_task_switch+0x1d3/0x740 [ 110.302839] ? finish_task_switch+0x1aa/0x740 [ 110.307304] ? copy_overflow+0x20/0x20 [ 110.311168] ? __schedule+0x8f3/0x2060 [ 110.315042] ? find_held_lock+0x35/0x1d0 [ 110.319077] ? find_held_lock+0x35/0x1d0 [ 110.323116] ? complete+0x62/0x80 [ 110.326545] ? __schedule+0x2060/0x2060 [ 110.330494] ? do_wait_intr_irq+0x3e0/0x3e0 [ 110.334781] ? __lockdep_init_map+0xe4/0x650 [ 110.339159] ? do_raw_spin_trylock+0x190/0x190 [ 110.343707] ? lockdep_init_map+0x9/0x10 [ 110.347736] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 110.352806] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 110.357789] ? trace_hardirqs_on+0xd/0x10 [ 110.361907] ? __kthread_parkme+0x175/0x240 [ 110.366198] kthread+0x33c/0x400 [ 110.369532] ? process_one_work+0x1b10/0x1b10 [ 110.373993] ? kthread_stop+0x7a0/0x7a0 [ 110.377936] ret_from_fork+0x3a/0x50 [ 111.457102] Shutting down cpus with NMI [ 111.461583] Dumping ftrace buffer: [ 111.465241] (ftrace buffer empty) [ 111.468922] Kernel Offset: disabled [ 111.472522] Rebooting in 86400 seconds..