[ 195.072591] [] create_new_namespaces+0xf5/0x180 [ 195.079017] [] unshare_nsproxy_namespaces+0x55/0xb0 [ 195.085916] [] SyS_unshare+0x19c/0x330 [ 195.091646] [] entry_SYSCALL_64_fastpath+0x16/0x71 [ 195.099111] IPVS: Creating netns size=2096 id=1 [ 195.103829] IPVS: ftp: loaded support on port[0] = 21 [ 195.364631] audit_printk_skb: 33 callbacks suppressed [ 195.369848] audit: type=1400 audit(1564323404.362:34): avc: denied { create } for pid=5824 comm="syz-fuzzer" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_crypto_socket permissive=1 [ 195.393885] audit: type=1400 audit(1564323404.392:35): avc: denied { create } for pid=5824 comm="syz-fuzzer" 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 [ 195.418355] audit: type=1400 audit(1564323404.412:36): avc: denied { create } for pid=5824 comm="syz-fuzzer" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 Warning: Permanently added '10.128.10.40' (ECDSA) to the list of known hosts. 2019/07/28 14:16:51 parsed 1 programs 2019/07/28 14:16:58 executed programs: 0 [ 209.487321] kmemleak: 566 new suspected memory leaks (see /sys/kernel/debug/kmemleak) [ 209.536179] IPv6: ADDRCONF(NETDEV_CHANGE): nr3: link becomes ready [ 299.943539] INFO: rcu_preempt self-detected stall on CPU [ 299.949399] 1-...: (1 GPs behind) idle=76b/140000000000001/0 softirq=36278/36278 fqs=9971 [ 299.958293] (t=10000 jiffies g=1265 c=1264 q=6145) [ 299.963491] Task dump for CPU 1: [ 299.966826] kworker/u4:2 R running task 0 68 2 0x00000008 [ 299.974828] Workqueue: netns cleanup_net [ 299.978991] 0000000000000002 ffff88012c103dc0 ffffffff8117fac6 0000000000000001 [ 299.987379] ffffffff8305f240 ffff88012c103dd8 ffffffff81181f42 0000000000000002 [ 299.995378] ffff88012c103e08 ffffffff811ae3f9 ffff88012c117200 ffffffff8305f240 [ 300.003379] Call Trace: [ 300.005944] [] sched_show_task+0xb6/0x120 [ 300.012468] [] dump_cpu_task+0x32/0x40 [ 300.017986] [] rcu_dump_cpu_stacks+0x89/0xe0 [ 300.024031] [] rcu_check_callbacks+0x4c8/0x890 [ 300.030233] [] ? tick_sched_handle.isra.16+0x40/0x40 [ 300.036969] [] ? tick_sched_handle.isra.16+0x40/0x40 [ 300.043702] [] update_process_times+0x34/0x60 [ 300.049973] [] tick_sched_handle.isra.16+0x31/0x40 [ 300.056623] [] tick_sched_timer+0x38/0x70 [ 300.062479] [] __hrtimer_run_queues+0x93/0x210 [ 300.068681] [] hrtimer_interrupt+0xa7/0x1a0 [ 300.074625] [] local_apic_timer_interrupt+0x31/0x50 [ 300.081271] [] smp_apic_timer_interrupt+0x38/0x50 [ 300.087755] [] apic_timer_interrupt+0x82/0x90 [ 300.094301] [] ? native_queued_spin_lock_slowpath+0x18/0x1b0 [ 300.102466] [] ? _raw_spin_lock+0x38/0x40 [ 300.108240] [] nf_conntrack_lock+0xd/0x50 [ 300.114214] [] ctnl_untimeout.isra.4+0xc3/0xf0 [ 300.120429] [] cttimeout_net_exit+0x28/0x80 [ 300.126376] [] ops_exit_list.isra.4+0x33/0x60 [ 300.132763] [] cleanup_net+0x19b/0x260 [ 300.138295] [] process_one_work+0x150/0x400 [ 300.144327] [] worker_thread+0x49/0x470 [ 300.149940] [] ? process_one_work+0x400/0x400 [ 300.156065] [] ? process_one_work+0x400/0x400 [ 300.162191] [] kthread+0xc4/0xe0 [ 300.167179] [] ? _raw_spin_unlock_irq+0x30/0x50 [ 300.173496] [] ? kthread_worker_fn+0x150/0x150 [ 300.179712] [] ret_from_fork+0x3f/0x70 [ 300.185216] [] ? kthread_worker_fn+0x150/0x150 [ 309.563543] INFO: rcu_sched detected stalls on CPUs/tasks: [ 309.569319] 1-...: (1 GPs behind) idle=76b/140000000000000/0 softirq=35942/36278 fqs=9951 [ 309.577863] (detected by 0, t=10003 jiffies, g=-117, c=-118, q=1) [ 309.584287] Task dump for CPU 1: [ 309.587623] kworker/u4:2 R running task 0 68 2 0x00000008 [ 309.595072] Workqueue: netns cleanup_net [ 309.599231] ffffffff82457dc6 ffff8800ac757b08 ffff88012b04cf40 ffff88012b0f6080 [ 309.607223] ffff88012b208000 ffff88012b207d58 ffff88012b207d50 ffff88012b0f6080 [ 309.615471] ffff88012b207d70 ffff88012b207c10 ffffffff824583e4 7fffffffffffffff [ 309.623457] Call Trace: [ 309.626011] [] ? __schedule+0x2c6/0x750 [ 309.631615] [] ? schedule+0x44/0x90 [ 309.636868] [] ? schedule_timeout+0x1e4/0x250 [ 309.642982] [] ? native_queued_spin_lock_slowpath+0x18/0x1b0 [ 309.650405] [] ? _raw_spin_lock+0x38/0x40 [ 309.656259] [] ? nf_conntrack_lock+0xd/0x50 [ 309.662289] [] ? ctnl_untimeout.isra.4+0xc3/0xf0 [ 309.668663] [] ? cttimeout_net_exit+0x28/0x80 [ 309.674778] [] ? ops_exit_list.isra.4+0x33/0x60 [ 309.681063] [] ? cleanup_net+0x19b/0x260 [ 309.686742] [] ? process_one_work+0x150/0x400 [ 309.692856] [] ? worker_thread+0x49/0x470 [ 309.698620] [] ? process_one_work+0x400/0x400 [ 309.704741] [] ? process_one_work+0x400/0x400 [ 309.710857] [] ? kthread+0xc4/0xe0 [ 309.716103] [] ? _raw_spin_unlock_irq+0x30/0x50 [ 309.722402] [] ? kthread_worker_fn+0x150/0x150 [ 309.728604] [] ? ret_from_fork+0x3f/0x70 [ 309.734283] [] ? kthread_worker_fn+0x150/0x150