[ 30.398282] [] dump_stack+0x99/0xd9 [ 30.403553] [] __lock_acquire+0x1a5c/0x1ba0 [ 30.409498] [] ? debug_lockdep_rcu_enabled+0x1d/0x20 [ 30.416235] [] lock_acquire+0xed/0x210 [ 30.421748] [] ? nf_conntrack_lock+0xd/0x50 [ 30.427693] [] _raw_spin_lock+0x36/0x50 [ 30.433301] [] ? nf_conntrack_lock+0xd/0x50 [ 30.439250] [] nf_conntrack_lock+0xd/0x50 [ 30.445030] [] ctnl_untimeout.isra.4+0xdc/0x110 [ 30.451326] [] cttimeout_net_exit+0x28/0x80 [ 30.457270] [] ops_exit_list.isra.4+0x33/0x60 [ 30.463389] [] cleanup_net+0x1a9/0x270 [ 30.468914] [] process_one_work+0x21b/0x690 [ 30.474855] [] ? process_one_work+0x17e/0x690 [ 30.480982] [] worker_thread+0x49/0x490 [ 30.486664] [] ? process_one_work+0x690/0x690 [ 30.492795] [] kthread+0xea/0x100 [ 30.497885] [] ? kthread_create_on_node+0x1f0/0x1f0 [ 30.504537] [] ret_from_fork+0x3f/0x70 [ 30.510066] [] ? kthread_create_on_node+0x1f0/0x1f0 [ 31.222994] kobject: 'regulatory.0' (ffff8800bb80a020): kobject_uevent_env [ 31.230043] kobject: 'regulatory.0' (ffff8800bb80a020): fill_kobj_path: path = '/devices/platform/regulatory.0' [ 34.383000] kobject: 'regulatory.0' (ffff8800bb80a020): kobject_uevent_env [ 34.390047] kobject: 'regulatory.0' (ffff8800bb80a020): fill_kobj_path: path = '/devices/platform/regulatory.0' Warning: Permanently added '10.128.10.12' (ECDSA) to the list of known hosts. 2019/12/09 15:55:24 parsed 1 programs 2019/12/09 15:55:24 executed programs: 0 [ 35.832118] IPv6: ADDRCONF(NETDEV_CHANGE): nr3: link becomes ready [ 35.842329] IPv6: ADDRCONF(NETDEV_CHANGE): nr4: link becomes ready [ 35.851541] IPv6: ADDRCONF(NETDEV_CHANGE): nr0: link becomes ready [ 35.858043] IPv6: ADDRCONF(NETDEV_CHANGE): nr1: link becomes ready [ 35.866129] IPv6: ADDRCONF(NETDEV_CHANGE): nr5: link becomes ready [ 35.873492] IPv6: ADDRCONF(NETDEV_CHANGE): nr2: link becomes ready [ 133.355389] BUG: spinlock lockup suspected on CPU#1, kworker/u4:0/6 [ 133.361838] lock: nf_conntrack_locks+0x0/0xe000, .magic: dead4ead, .owner: kworker/u4:0/6, .owner_cpu: 1 [ 133.371541] CPU: 1 PID: 6 Comm: kworker/u4:0 Not tainted 4.5.0-rc3-syzkaller #0 [ 133.379346] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 133.389650] Workqueue: netns cleanup_net [ 133.393810] 0000000000000000 ffff88012b767c18 ffffffff8195d870 ffff88012b760180 [ 133.401934] ffffffff8320a780 ffff88012b767c38 ffffffff811c4393 ffffffff8320a780 [ 133.410026] 0000000089173700 ffff88012b767c68 ffffffff811c44c3 ffffffff8320a780 [ 133.418039] Call Trace: [ 133.420604] [] dump_stack+0x99/0xd9 [ 133.425882] [] spin_dump+0x73/0xc0 [ 133.431052] [] do_raw_spin_lock+0xa3/0x160 [ 133.436926] [] _raw_spin_lock+0x3e/0x50 [ 133.442532] [] ? nf_conntrack_lock+0xd/0x50 [ 133.448486] [] nf_conntrack_lock+0xd/0x50 [ 133.454256] [] ctnl_untimeout.isra.4+0xdc/0x110 [ 133.460543] [] cttimeout_net_exit+0x28/0x80 [ 133.466511] [] ops_exit_list.isra.4+0x33/0x60 [ 133.472638] [] cleanup_net+0x1a9/0x270 [ 133.478650] [] process_one_work+0x21b/0x690 [ 133.484593] [] ? process_one_work+0x17e/0x690 [ 133.490710] [] worker_thread+0x49/0x490 [ 133.496307] [] ? process_one_work+0x690/0x690 [ 133.502436] [] kthread+0xea/0x100 [ 133.507510] [] ? kthread_create_on_node+0x1f0/0x1f0 [ 133.514167] [] ret_from_fork+0x3f/0x70 [ 133.519673] [] ? kthread_create_on_node+0x1f0/0x1f0 [ 133.526342] Sending NMI to all CPUs: [ 133.530131] NMI backtrace for cpu 0 [ 133.533747] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.5.0-rc3-syzkaller #0 [ 133.540908] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 133.550448] task: ffffffff83221540 ti: ffffffff83200000 task.ti: ffffffff83200000 [ 133.558086] RIP: 0010:[] [] native_safe_halt+0x6/0x10 [ 133.566477] RSP: 0018:ffffffff83203eb8 EFLAGS: 00000282 [ 133.571909] RAX: 0000000000000000 RBX: ffffffff83200000 RCX: 0000000000000000 [ 133.579170] RDX: 0000000000000000 RSI: ffffffff82f6e2c0 RDI: ffffffff81089bf6 [ 133.586478] RBP: ffffffff83203eb8 R08: 0000000000000000 R09: 0000000000000001 [ 133.593738] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff83204000 [ 133.600990] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff83200000 [ 133.608251] FS: 0000000000000000(0000) GS:ffff88012c000000(0000) knlGS:0000000000000000 [ 133.616461] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 133.622313] CR2: 000000c4204ede80 CR3: 00000000b8a89000 CR4: 00000000001406f0 [ 133.629585] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 133.636858] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 133.644131] Stack: [ 133.646262] ffffffff83203ed8 ffffffff81089c09 ffffffff83200000 ffffffff83204000 [ 133.653781] ffffffff83203ee8 ffffffff8108a61a ffffffff83203ef8 ffffffff811b7b85 [ 133.661290] ffffffff83203f40 ffffffff811b7f7f ffffffff835922e0 ffffffff83204000 [ 133.668808] Call Trace: [ 133.671368] [] default_idle+0x29/0x190 [ 133.676920] [] arch_cpu_idle+0xa/0x10 [ 133.682356] [] default_idle_call+0x25/0x50 [ 133.688225] [] cpu_startup_entry+0x3cf/0x460 [ 133.694265] [] rest_init+0x131/0x140 [ 133.699598] [] start_kernel+0x44a/0x457 [ 133.705203] [] ? early_idt_handler_array+0x120/0x120 [ 133.711931] [] x86_64_start_reservations+0x2a/0x2c [ 133.718507] [] x86_64_start_kernel+0x145/0x152 [ 133.724721] Code: 00 00 00 00 00 55 48 89 e5 fa 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb f4 <5d> c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 f4 5d c3 66 0f 1f 84 [ 133.743867] NMI backtrace for cpu 1 [ 133.747487] CPU: 1 PID: 6 Comm: kworker/u4:0 Not tainted 4.5.0-rc3-syzkaller #0 [ 133.754920] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 133.764333] Workqueue: netns cleanup_net [ 133.768373] task: ffff88012b760180 ti: ffff88012b764000 task.ti: ffff88012b764000 [ 133.776057] RIP: 0010:[] [] native_write_msr_safe+0x6/0x40 [ 133.784880] RSP: 0018:ffff88012b767b68 EFLAGS: 00000086 [ 133.790300] RAX: 0000000000000400 RBX: ffffffff83471680 RCX: 0000000000000830 [ 133.797597] RDX: 0000000000000001 RSI: 0000000000000400 RDI: 0000000000000830 [ 133.804865] RBP: ffff88012b767b70 R08: 0000000000000400 R09: 0000000000000003 [ 133.812120] R10: ffff88012b760a30 R11: 0000000000000001 R12: 0000000000080000 [ 133.819383] R13: 0000000000000001 R14: 0000000000000002 R15: 000000000000a130 [ 133.826639] FS: 0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000 [ 133.834985] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 133.840850] CR2: 000056280c1e8000 CR3: 000000000321a000 CR4: 00000000001406e0 [ 133.848196] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 133.855579] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 133.862834] Stack: [ 133.864971] ffffffff810c261a ffff88012b767bb8 ffffffff810c2701 0000000000000282 [ 133.872480] 0000000000000001 00000000000114e0 0000000000000001 ffffffff810bf280 [ 133.880001] 0000000000000040 0000000000000001 ffff88012b767bc8 ffffffff810c27ce [ 133.887517] Call Trace: [ 133.890072] [] ? __x2apic_send_IPI_dest.constprop.7+0x3a/0x40 [ 133.897588] [] __x2apic_send_IPI_mask+0xe1/0x150 [ 133.903976] [] ? irq_force_complete_move+0xe0/0xe0 [ 133.910524] [] x2apic_send_IPI_mask+0xe/0x10 [ 133.916564] [] nmi_raise_cpu_backtrace+0x16/0x20 [ 133.922960] [] nmi_trigger_all_cpu_backtrace+0x322/0x330 [ 133.930032] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 133.937082] [] do_raw_spin_lock+0xad/0x160 [ 133.943057] [] _raw_spin_lock+0x3e/0x50 [ 133.948747] [] ? nf_conntrack_lock+0xd/0x50 [ 133.954717] [] nf_conntrack_lock+0xd/0x50 [ 133.960611] [] ctnl_untimeout.isra.4+0xdc/0x110 [ 133.967446] [] cttimeout_net_exit+0x28/0x80 [ 133.973407] [] ops_exit_list.isra.4+0x33/0x60 [ 133.979523] [] cleanup_net+0x1a9/0x270 [ 133.985058] [] process_one_work+0x21b/0x690 [ 133.991027] [] ? process_one_work+0x17e/0x690 [ 133.997179] [] worker_thread+0x49/0x490 [ 134.002778] [] ? process_one_work+0x690/0x690 [ 134.008916] [] kthread+0xea/0x100 [ 134.014007] [] ? kthread_create_on_node+0x1f0/0x1f0 [ 134.020654] [] ret_from_fork+0x3f/0x70 [ 134.026174] [] ? kthread_create_on_node+0x1f0/0x1f0 [ 134.032903] Code: 5b 5d c3 48 c1 e2 20 48 89 d3 31 d2 48 09 c3 48 89 de e8 7e fc 8c 00 48 89 d8 5b 5d c3 0f 1f 84 00 00 00 00 00 89 f0 89 f9 0f 30 <31> c0 0f 1f 44 00 00 c3 41 89 f0 48 89 d6 55 89 c2 48 c1 e6 20 [ 136.232982] INFO: rcu_preempt self-detected stall on CPU [ 136.238626] 1-...: (1 GPs behind) idle=a7d/140000000000001/0 softirq=6134/6135 fqs=10439 [ 136.246998] (t=10500 jiffies g=438 c=437 q=1004) [ 136.252019] Task dump for CPU 1: [ 136.255354] kworker/u4:0 R running task 13504 6 2 0x00000008 [ 136.262789] Workqueue: netns cleanup_net [ 136.266946] ffff88012b760180 ffff88012c103da0 ffffffff8119faa3 0000000000000001 [ 136.274943] ffffffff83272c00 0000000000000086 ffff88012c103db8 ffffffff811a2882 [ 136.282929] 0000000000000002 ffff88012c103de8 ffffffff811dc349 ffff88012c117dc0 [ 136.290922] Call Trace: [ 136.293477] [] sched_show_task+0xe3/0x180 [ 136.299979] [] dump_cpu_task+0x32/0x40 [ 136.305486] [] rcu_dump_cpu_stacks+0x89/0xe0 [ 136.311514] [] rcu_check_callbacks+0x66d/0xa30 [ 136.317717] [] ? tick_sched_do_timer+0x30/0x30 [ 136.323921] [] ? tick_sched_do_timer+0x30/0x30 [ 136.330147] [] update_process_times+0x34/0x60 [ 136.336282] [] tick_sched_handle.isra.20+0x20/0x60 [ 136.342835] [] tick_sched_timer+0x38/0x70 [ 136.348639] [] __hrtimer_run_queues+0x11d/0x4a0 [ 136.354931] [] ? hrtimer_interrupt+0x88/0x1b0 [ 136.361064] [] hrtimer_interrupt+0xaa/0x1b0 [ 136.367012] [] local_apic_timer_interrupt+0x31/0x50 [ 136.373649] [] smp_apic_timer_interrupt+0x38/0x50 [ 136.380315] [] apic_timer_interrupt+0x8c/0xa0 [ 136.386436] [] ? kvm_wait+0xbb/0xe0 [ 136.392426] [] ? native_safe_halt+0x6/0x10 [ 136.398290] [] ? trace_hardirqs_on+0xd/0x10 [ 136.404243] [] kvm_wait+0xca/0xe0 [ 136.409332] [] __pv_queued_spin_lock_slowpath+0x26a/0x2d0 [ 136.416505] [] do_raw_spin_lock+0x157/0x160 [ 136.422447] [] _raw_spin_lock+0x3e/0x50 [ 136.428045] [] ? nf_conntrack_lock+0xd/0x50 [ 136.433988] [] nf_conntrack_lock+0xd/0x50 [ 136.439760] [] ctnl_untimeout.isra.4+0xdc/0x110 [ 136.446048] [] cttimeout_net_exit+0x28/0x80 [ 136.451993] [] ops_exit_list.isra.4+0x33/0x60 [ 136.458108] [] cleanup_net+0x1a9/0x270 [ 136.463616] [] process_one_work+0x21b/0x690 [ 136.469554] [] ? process_one_work+0x17e/0x690 [ 136.475667] [] worker_thread+0x49/0x490 [ 136.481272] [] ? process_one_work+0x690/0x690 [ 136.487390] [] kthread+0xea/0x100 [ 136.492463] [] ? kthread_create_on_node+0x1f0/0x1f0 [ 136.499101] [] ret_from_fork+0x3f/0x70 [ 136.504606] [] ? kthread_create_on_node+0x1f0/0x1f0