[ 6044.577614][ C2] watchdog: BUG: soft lockup - CPU#2 stuck for 3759s! [kworker/u8:1:72] [ 6044.578080][ C2] Modules linked in: act_gact cls_flower sch_ingress vxlan [ 6044.578454][ C2] irq event stamp: 22488063 [ 6044.578688][ C2] hardirqs last enabled at (22488063): [] irqentry_exit+0x3b/0x90 [ 6044.579186][ C2] hardirqs last disabled at (22488062): [] __do_softirq+0x670/0x7ff [ 6044.579672][ C2] softirqs last enabled at (22488048): [] __do_softirq+0x519/0x7ff [ 6044.580156][ C2] softirqs last disabled at (22487883): [] irq_exit_rcu+0x98/0xc0 [ 6044.580636][ C2] CPU: 2 PID: 72 Comm: kworker/u8:1 Tainted: G B L 6.8.0-rc2-virtme #1 [ 6044.581120][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 6044.581746][ C2] Workqueue: netns cleanup_net [ 6044.581996][ C2] RIP: 0010:queued_spin_lock_slowpath+0x12d/0xb90 [ 6044.582328][ C2] Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 43 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00 [ 6044.583314][ C2] RSP: 0018:ffffc9000052f3e0 EFLAGS: 00000202 [ 6044.583627][ C2] RAX: 0000000000000000 RBX: 000000006b6b6b6b RCX: ffffffff98ab3f0c [ 6044.584032][ C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800623f408 [ 6044.584441][ C2] RBP: ffff88800623f408 R08: 0000000000000000 R09: ffffed1000c47e81 [ 6044.584848][ C2] R10: 0000000000000003 R11: ffff888035bfc508 R12: 0000000000000003 [ 6044.585255][ C2] R13: ffffed1000c47e81 R14: 0000000000000001 R15: 1ffff920000a5e7d [ 6044.585660][ C2] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 6044.586113][ C2] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6044.586450][ C2] CR2: 00007fa0f7829000 CR3: 000000001b734002 CR4: 0000000000770ef0 [ 6044.586857][ C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 6044.587262][ C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 6044.587667][ C2] PKRU: 55555554 [ 6044.587852][ C2] Call Trace: [ 6044.588026][ C2] [ 6044.588176][ C2] ? watchdog_timer_fn+0x2cf/0x3c0 [ 6044.588445][ C2] ? __run_hrtimer+0x1c0/0x710 [ 6044.588693][ C2] ? __pfx_watchdog_timer_fn+0x10/0x10 [ 6044.588975][ C2] ? __hrtimer_run_queues+0x197/0x270 [ 6044.589252][ C2] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 6044.589546][ C2] ? kvm_clock_get_cycles+0x18/0x30 [ 6044.589816][ C2] ? ktime_get_update_offsets_now+0xe1/0x2d0 [ 6044.590128][ C2] ? hrtimer_interrupt+0x2c3/0x770 [ 6044.590395][ C2] ? __sysvec_apic_timer_interrupt+0xbe/0x380 [ 6044.590710][ C2] ? sysvec_apic_timer_interrupt+0x70/0x80 [ 6044.591009][ C2] [ 6044.591163][ C2] [ 6044.591315][ C2] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 6044.591636][ C2] ? queued_spin_lock_slowpath+0xa0c/0xb90 [ 6044.591937][ C2] ? queued_spin_lock_slowpath+0x12d/0xb90 [ 6044.592237][ C2] ? __pfx_queued_spin_lock_slowpath+0x10/0x10 [ 6044.592555][ C2] ? __pfx___schedule+0x10/0x10 [ 6044.592809][ C2] do_raw_spin_lock+0x1ec/0x270 [ 6044.593065][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 6044.593341][ C2] ? __pfx_do_raw_spin_trylock+0x10/0x10 [ 6044.593630][ C2] ? lock_acquire+0x1c1/0x220 [ 6044.593872][ C2] ? __mutex_lock+0x33e/0xb10 [ 6044.594116][ C2] ? __mutex_lock+0x811/0xb10 [ 6044.594364][ C2] _raw_spin_lock+0x67/0x80 [ 6044.594600][ C2] __mutex_lock+0x33e/0xb10 [ 6044.594836][ C2] ? __lock_release+0x40f/0x880 [ 6044.595088][ C2] ? __pfx___lock_release+0x10/0x10 [ 6044.595356][ C2] ? refcount_dec_and_mutex_lock+0x35/0x90 [ 6044.595659][ C2] ? __pfx___mutex_lock+0x10/0x10 [ 6044.595920][ C2] ? __pfx___up_read+0x10/0x10 [ 6044.596167][ C2] ? refcount_dec_not_one+0x6b/0x180 [ 6044.596441][ C2] ? tc_setup_cb_destroy+0x22b/0x300 [ 6044.596718][ C2] ? __pfx_refcount_dec_not_one+0x10/0x10 [ 6044.597013][ C2] ? refcount_dec_and_mutex_lock+0x35/0x90 [ 6044.597316][ C2] refcount_dec_and_mutex_lock+0x35/0x90 [ 6044.597608][ C2] __tcf_action_put+0x3d/0xf0 [ 6044.597855][ C2] tcf_action_destroy+0x43/0x130 [ 6044.598109][ C2] ? hlock_class+0x4e/0x130 [ 6044.598346][ C2] tcf_exts_destroy+0x3c/0xb0 [ 6044.598589][ C2] __fl_destroy_filter+0x54/0x120 [cls_flower] [ 6044.598914][ C2] __fl_put+0x21a/0x290 [cls_flower] [ 6044.599194][ C2] ? __pfx___fl_put+0x10/0x10 [cls_flower] [ 6044.599499][ C2] ? __fl_delete+0x33f/0x750 [cls_flower] [ 6044.599803][ C2] __fl_delete+0x4e4/0x750 [cls_flower] [ 6044.600094][ C2] ? __pfx___fl_delete+0x10/0x10 [cls_flower] [ 6044.600412][ C2] ? __lock_release+0x40f/0x880 [ 6044.600664][ C2] ? __mutex_lock+0x26e/0xb10 [ 6044.600908][ C2] fl_destroy+0x1ae/0x300 [cls_flower] [ 6044.601196][ C2] ? __pfx_fl_destroy+0x10/0x10 [cls_flower] [ 6044.601510][ C2] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 6044.601819][ C2] tcf_proto_destroy+0x6e/0x2e0 [ 6044.602073][ C2] tcf_chain_flush+0x1e0/0x320 [ 6044.602326][ C2] __tcf_block_put+0x113/0x270 [ 6044.602577][ C2] clsact_destroy+0x1ee/0x800 [sch_ingress] [ 6044.602885][ C2] __qdisc_destroy+0xee/0x340 [ 6044.603129][ C2] dev_shutdown+0x129/0x350 [ 6044.603366][ C2] unregister_netdevice_many_notify+0x4fe/0x1180 [ 6044.603693][ C2] ? rtnl_is_locked+0x15/0x20 [ 6044.603938][ C2] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 6044.604263][ C2] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 6044.604610][ C2] ? mutex_is_locked+0x17/0x50 [ 6044.604858][ C2] ? nexthop_net_exit_batch_rtnl+0x83/0x210 [ 6044.605164][ C2] cleanup_net+0x4cf/0xb60 [ 6044.605397][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 6044.605686][ C2] ? __pfx_cleanup_net+0x10/0x10 [ 6044.605942][ C2] ? lock_acquire+0x1c1/0x220 [ 6044.606186][ C2] ? process_one_work+0x714/0x1310 [ 6044.606453][ C2] process_one_work+0x78c/0x1310 [ 6044.606710][ C2] ? hlock_class+0x4e/0x130 [ 6044.606946][ C2] ? __pfx_process_one_work+0x10/0x10 [ 6044.607225][ C2] ? assign_work+0x16c/0x240 [ 6044.607464][ C2] worker_thread+0x73d/0x1010 [ 6044.607706][ C2] ? lockdep_hardirqs_on_prepare.part.0+0x1b1/0x370 [ 6044.608047][ C2] ? __pfx_worker_thread+0x10/0x10 [ 6044.608313][ C2] ? __pfx_worker_thread+0x10/0x10 [ 6044.608577][ C2] kthread+0x28f/0x360 [ 6044.608788][ C2] ? __pfx_kthread+0x10/0x10 [ 6044.609027][ C2] ret_from_fork+0x31/0x70 [ 6044.609258][ C2] ? __pfx_kthread+0x10/0x10 [ 6044.609497][ C2] ret_from_fork_asm+0x1b/0x30 [ 6044.609750][ C2] [ 6072.577614][ C2] watchdog: BUG: soft lockup - CPU#2 stuck for 3785s! [kworker/u8:1:72] [ 6072.578075][ C2] Modules linked in: act_gact cls_flower sch_ingress vxlan [ 6072.578450][ C2] irq event stamp: 22488063 [ 6072.578681][ C2] hardirqs last enabled at (22488063): [] irqentry_exit+0x3b/0x90 [ 6072.579168][ C2] hardirqs last disabled at (22488062): [] __do_softirq+0x670/0x7ff [ 6072.579655][ C2] softirqs last enabled at (22488048): [] __do_softirq+0x519/0x7ff [ 6072.580139][ C2] softirqs last disabled at (22487883): [] irq_exit_rcu+0x98/0xc0 [ 6072.580619][ C2] CPU: 2 PID: 72 Comm: kworker/u8:1 Tainted: G B L 6.8.0-rc2-virtme #1 [ 6072.581098][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 6072.581721][ C2] Workqueue: netns cleanup_net [ 6072.581970][ C2] RIP: 0010:kasan_report+0x29/0xf0 [ 6072.582236][ C2] Code: 90 66 0f 1f 00 41 57 41 56 41 55 41 54 55 53 48 83 ec 70 9c 8f 04 24 0f 01 ca 65 4c 8b 3c 25 80 b8 1f 00 41 8b 87 e0 17 00 00 <85> c0 0f 85 b7 00 00 00 48 89 fd 49 89 f6 89 d3 49 89 cd e8 0f f7 [ 6072.583224][ C2] RSP: 0018:ffffc9000052f318 EFLAGS: 00000286 [ 6072.583535][ C2] RAX: 0000000000000000 RBX: ffffed1000c47e82 RCX: ffffffff98ab35b0 [ 6072.583941][ C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800623f408 [ 6072.584350][ C2] RBP: ffffed1000c47e81 R08: 0000000000000000 R09: ffffed1000c47e81 [ 6072.584755][ C2] R10: 0000000000000003 R11: ffff888035bfc508 R12: 0000000000000003 [ 6072.585160][ C2] R13: ffffed1000c47e81 R14: 0000000000000001 R15: ffff888005a32640 [ 6072.585567][ C2] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 6072.586021][ C2] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6072.586358][ C2] CR2: 00007fa0f7829000 CR3: 000000001b734002 CR4: 0000000000770ef0 [ 6072.586764][ C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 6072.587170][ C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 6072.587575][ C2] PKRU: 55555554 [ 6072.587760][ C2] Call Trace: [ 6072.587931][ C2] [ 6072.588087][ C2] ? watchdog_timer_fn+0x2cf/0x3c0 [ 6072.588355][ C2] ? __run_hrtimer+0x1c0/0x710 [ 6072.588603][ C2] ? __pfx_watchdog_timer_fn+0x10/0x10 [ 6072.588884][ C2] ? __hrtimer_run_queues+0x197/0x270 [ 6072.589161][ C2] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 6072.589455][ C2] ? kvm_clock_get_cycles+0x18/0x30 [ 6072.589726][ C2] ? ktime_get_update_offsets_now+0xe1/0x2d0 [ 6072.590036][ C2] ? hrtimer_interrupt+0x2c3/0x770 [ 6072.590304][ C2] ? __sysvec_apic_timer_interrupt+0xbe/0x380 [ 6072.590617][ C2] ? sysvec_apic_timer_interrupt+0x70/0x80 [ 6072.590919][ C2] [ 6072.591070][ C2] [ 6072.591225][ C2] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 6072.591546][ C2] ? queued_spin_lock_slowpath+0xb0/0xb90 [ 6072.591839][ C2] ? kasan_report+0x29/0xf0 [ 6072.592078][ C2] kasan_check_range+0x39/0x1c0 [ 6072.592337][ C2] queued_spin_lock_slowpath+0xb0/0xb90 [ 6072.592624][ C2] ? __pfx_queued_spin_lock_slowpath+0x10/0x10 [ 6072.592942][ C2] ? __pfx___schedule+0x10/0x10 [ 6072.593198][ C2] do_raw_spin_lock+0x1ec/0x270 [ 6072.593454][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 6072.593731][ C2] ? __pfx_do_raw_spin_trylock+0x10/0x10 [ 6072.594021][ C2] ? lock_acquire+0x1c1/0x220 [ 6072.594269][ C2] ? __mutex_lock+0x33e/0xb10 [ 6072.594514][ C2] ? __mutex_lock+0x811/0xb10 [ 6072.594758][ C2] _raw_spin_lock+0x67/0x80 [ 6072.594992][ C2] __mutex_lock+0x33e/0xb10 [ 6072.595228][ C2] ? __lock_release+0x40f/0x880 [ 6072.595481][ C2] ? __pfx___lock_release+0x10/0x10 [ 6072.595750][ C2] ? refcount_dec_and_mutex_lock+0x35/0x90 [ 6072.596054][ C2] ? __pfx___mutex_lock+0x10/0x10 [ 6072.596316][ C2] ? __pfx___up_read+0x10/0x10 [ 6072.596565][ C2] ? refcount_dec_not_one+0x6b/0x180 [ 6072.596838][ C2] ? tc_setup_cb_destroy+0x22b/0x300 [ 6072.597113][ C2] ? __pfx_refcount_dec_not_one+0x10/0x10 [ 6072.597410][ C2] ? refcount_dec_and_mutex_lock+0x35/0x90 [ 6072.597712][ C2] refcount_dec_and_mutex_lock+0x35/0x90 [ 6072.598002][ C2] __tcf_action_put+0x3d/0xf0 [ 6072.598248][ C2] tcf_action_destroy+0x43/0x130 [ 6072.598504][ C2] ? hlock_class+0x4e/0x130 [ 6072.598741][ C2] tcf_exts_destroy+0x3c/0xb0 [ 6072.598984][ C2] __fl_destroy_filter+0x54/0x120 [cls_flower] [ 6072.599308][ C2] __fl_put+0x21a/0x290 [cls_flower] [ 6072.599586][ C2] ? __pfx___fl_put+0x10/0x10 [cls_flower] [ 6072.599892][ C2] ? __fl_delete+0x33f/0x750 [cls_flower] [ 6072.600191][ C2] __fl_delete+0x4e4/0x750 [cls_flower] [ 6072.600484][ C2] ? __pfx___fl_delete+0x10/0x10 [cls_flower] [ 6072.600800][ C2] ? __lock_release+0x40f/0x880 [ 6072.601051][ C2] ? __mutex_lock+0x26e/0xb10 [ 6072.601294][ C2] fl_destroy+0x1ae/0x300 [cls_flower] [ 6072.601583][ C2] ? __pfx_fl_destroy+0x10/0x10 [cls_flower] [ 6072.601896][ C2] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 6072.602208][ C2] tcf_proto_destroy+0x6e/0x2e0 [ 6072.602461][ C2] tcf_chain_flush+0x1e0/0x320 [ 6072.602709][ C2] __tcf_block_put+0x113/0x270 [ 6072.602957][ C2] clsact_destroy+0x1ee/0x800 [sch_ingress] [ 6072.603266][ C2] __qdisc_destroy+0xee/0x340 [ 6072.603510][ C2] dev_shutdown+0x129/0x350 [ 6072.603747][ C2] unregister_netdevice_many_notify+0x4fe/0x1180 [ 6072.604074][ C2] ? rtnl_is_locked+0x15/0x20 [ 6072.604320][ C2] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 6072.604644][ C2] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 6072.604992][ C2] ? mutex_is_locked+0x17/0x50 [ 6072.605237][ C2] ? nexthop_net_exit_batch_rtnl+0x83/0x210 [ 6072.605543][ C2] cleanup_net+0x4cf/0xb60 [ 6072.605775][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 6072.606062][ C2] ? __pfx_cleanup_net+0x10/0x10 [ 6072.606319][ C2] ? lock_acquire+0x1c1/0x220 [ 6072.606562][ C2] ? process_one_work+0x714/0x1310 [ 6072.606828][ C2] process_one_work+0x78c/0x1310 [ 6072.607085][ C2] ? hlock_class+0x4e/0x130 [ 6072.607319][ C2] ? __pfx_process_one_work+0x10/0x10 [ 6072.607600][ C2] ? assign_work+0x16c/0x240 [ 6072.607836][ C2] worker_thread+0x73d/0x1010 [ 6072.608081][ C2] ? lockdep_hardirqs_on_prepare.part.0+0x1b1/0x370 [ 6072.608418][ C2] ? __pfx_worker_thread+0x10/0x10 [ 6072.608682][ C2] ? __pfx_worker_thread+0x10/0x10 [ 6072.608946][ C2] kthread+0x28f/0x360 [ 6072.609159][ C2] ? __pfx_kthread+0x10/0x10 [ 6072.609395][ C2] ret_from_fork+0x31/0x70 [ 6072.609627][ C2] ? __pfx_kthread+0x10/0x10 [ 6072.609865][ C2] ret_from_fork_asm+0x1b/0x30 [ 6072.610115][ C2] [ 6075.735211][ T33] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 2-.... } 4064506 jiffies s: 48741 root: 0x4/. [ 6075.735858][ T33] rcu: blocking rcu_node structures (internal RCU debug): [ 6075.736231][ T33] Sending NMI from CPU 3 to CPUs 2: [ 6075.736510][ C2] NMI backtrace for cpu 2 [ 6075.736516][ C2] CPU: 2 PID: 72 Comm: kworker/u8:1 Tainted: G B L 6.8.0-rc2-virtme #1 [ 6075.736520][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 6075.736523][ C2] Workqueue: netns cleanup_net [ 6075.736528][ C2] RIP: 0010:queued_spin_lock_slowpath+0x12d/0xb90 [ 6075.736533][ C2] Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 43 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00 [ 6075.736536][ C2] RSP: 0018:ffffc9000052f3e0 EFLAGS: 00000202 [ 6075.736538][ C2] RAX: 0000000000000000 RBX: 000000006b6b6b6b RCX: ffffffff98ab3f0c [ 6075.736540][ C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800623f408 [ 6075.736542][ C2] RBP: ffff88800623f408 R08: 0000000000000000 R09: ffffed1000c47e81 [ 6075.736544][ C2] R10: 0000000000000003 R11: ffff888035bfc508 R12: 0000000000000003 [ 6075.736545][ C2] R13: ffffed1000c47e81 R14: 0000000000000001 R15: 1ffff920000a5e7d [ 6075.736547][ C2] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 6075.736549][ C2] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6075.736552][ C2] CR2: 00007fa0f7829000 CR3: 000000001b734002 CR4: 0000000000770ef0 [ 6075.736554][ C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 6075.736555][ C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 6075.736556][ C2] PKRU: 55555554 [ 6075.736557][ C2] Call Trace: [ 6075.736559][ C2] [ 6075.736562][ C2] ? nmi_cpu_backtrace+0x112/0x220 [ 6075.736567][ C2] ? nmi_cpu_backtrace_handler+0x11/0x20 [ 6075.736572][ C2] ? nmi_handle+0x153/0x420 [ 6075.736576][ C2] ? default_do_nmi+0x41/0x100 [ 6075.736580][ C2] ? exc_nmi+0xf3/0x120 [ 6075.736583][ C2] ? end_repeat_nmi+0xf/0x60 [ 6075.736587][ C2] ? queued_spin_lock_slowpath+0xa0c/0xb90 [ 6075.736590][ C2] ? queued_spin_lock_slowpath+0x12d/0xb90 [ 6075.736594][ C2] ? queued_spin_lock_slowpath+0x12d/0xb90 [ 6075.736598][ C2] ? queued_spin_lock_slowpath+0x12d/0xb90 [ 6075.736601][ C2] [ 6075.736602][ C2] [ 6075.736603][ C2] ? __pfx_queued_spin_lock_slowpath+0x10/0x10 [ 6075.736607][ C2] ? __pfx___schedule+0x10/0x10 [ 6075.736612][ C2] do_raw_spin_lock+0x1ec/0x270 [ 6075.736618][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 6075.736621][ C2] ? __pfx_do_raw_spin_trylock+0x10/0x10 [ 6075.736624][ C2] ? lock_acquire+0x1c1/0x220 [ 6075.736626][ C2] ? __mutex_lock+0x33e/0xb10 [ 6075.736630][ C2] ? __mutex_lock+0x811/0xb10 [ 6075.736633][ C2] _raw_spin_lock+0x67/0x80 [ 6075.736636][ C2] __mutex_lock+0x33e/0xb10 [ 6075.736639][ C2] ? __lock_release+0x40f/0x880 [ 6075.736642][ C2] ? __pfx___lock_release+0x10/0x10 [ 6075.736645][ C2] ? refcount_dec_and_mutex_lock+0x35/0x90 [ 6075.736650][ C2] ? __pfx___mutex_lock+0x10/0x10 [ 6075.736654][ C2] ? __pfx___up_read+0x10/0x10 [ 6075.736657][ C2] ? refcount_dec_not_one+0x6b/0x180 [ 6075.736660][ C2] ? tc_setup_cb_destroy+0x22b/0x300 [ 6075.736664][ C2] ? __pfx_refcount_dec_not_one+0x10/0x10 [ 6075.736669][ C2] ? refcount_dec_and_mutex_lock+0x35/0x90 [ 6075.736673][ C2] refcount_dec_and_mutex_lock+0x35/0x90 [ 6075.736677][ C2] __tcf_action_put+0x3d/0xf0 [ 6075.736681][ C2] tcf_action_destroy+0x43/0x130 [ 6075.736684][ C2] ? hlock_class+0x4e/0x130 [ 6075.736688][ C2] tcf_exts_destroy+0x3c/0xb0 [ 6075.736691][ C2] __fl_destroy_filter+0x54/0x120 [cls_flower] [ 6075.736701][ C2] __fl_put+0x21a/0x290 [cls_flower] [ 6075.736710][ C2] ? __pfx___fl_put+0x10/0x10 [cls_flower] [ 6075.736718][ C2] ? __fl_delete+0x33f/0x750 [cls_flower] [ 6075.736727][ C2] __fl_delete+0x4e4/0x750 [cls_flower] [ 6075.736736][ C2] ? __pfx___fl_delete+0x10/0x10 [cls_flower] [ 6075.736744][ C2] ? __lock_release+0x40f/0x880 [ 6075.736747][ C2] ? __mutex_lock+0x26e/0xb10 [ 6075.736751][ C2] fl_destroy+0x1ae/0x300 [cls_flower] [ 6075.736760][ C2] ? __pfx_fl_destroy+0x10/0x10 [cls_flower] [ 6075.736769][ C2] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 6075.736773][ C2] tcf_proto_destroy+0x6e/0x2e0 [ 6075.736777][ C2] tcf_chain_flush+0x1e0/0x320 [ 6075.736782][ C2] __tcf_block_put+0x113/0x270 [ 6075.736786][ C2] clsact_destroy+0x1ee/0x800 [sch_ingress] [ 6075.736794][ C2] __qdisc_destroy+0xee/0x340 [ 6075.736798][ C2] dev_shutdown+0x129/0x350 [ 6075.736801][ C2] unregister_netdevice_many_notify+0x4fe/0x1180 [ 6075.736805][ C2] ? rtnl_is_locked+0x15/0x20 [ 6075.736808][ C2] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 6075.736811][ C2] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 6075.736814][ C2] ? mutex_is_locked+0x17/0x50 [ 6075.736817][ C2] ? nexthop_net_exit_batch_rtnl+0x83/0x210 [ 6075.736822][ C2] cleanup_net+0x4cf/0xb60 [ 6075.736825][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 6075.736828][ C2] ? __pfx_cleanup_net+0x10/0x10 [ 6075.736831][ C2] ? lock_acquire+0x1c1/0x220 [ 6075.736833][ C2] ? process_one_work+0x714/0x1310 [ 6075.736837][ C2] process_one_work+0x78c/0x1310 [ 6075.736841][ C2] ? hlock_class+0x4e/0x130 [ 6075.736844][ C2] ? __pfx_process_one_work+0x10/0x10 [ 6075.736849][ C2] ? assign_work+0x16c/0x240 [ 6075.736852][ C2] worker_thread+0x73d/0x1010 [ 6075.736855][ C2] ? lockdep_hardirqs_on_prepare.part.0+0x1b1/0x370 [ 6075.736859][ C2] ? __pfx_worker_thread+0x10/0x10 [ 6075.736862][ C2] ? __pfx_worker_thread+0x10/0x10 [ 6075.736864][ C2] kthread+0x28f/0x360 [ 6075.736867][ C2] ? __pfx_kthread+0x10/0x10 [ 6075.736869][ C2] ret_from_fork+0x31/0x70 [ 6075.736871][ C2] ? __pfx_kthread+0x10/0x10 [ 6075.736873][ C2] ret_from_fork_asm+0x1b/0x30 [ 6075.736880][ C2] [ 6094.799191][ C2] rcu: INFO: rcu_preempt self-detected stall on CPU [ 6094.799566][ C2] rcu: 2-....: (4075279 ticks this GP) idle=3024/1/0x4000000000000000 softirq=921532/921550 fqs=1020455 [ 6094.800133][ C2] rcu: (t=4083806 jiffies g=1693981 q=9850 ncpus=4) [ 6094.800476][ C2] CPU: 2 PID: 72 Comm: kworker/u8:1 Tainted: G B L 6.8.0-rc2-virtme #1 [ 6094.800955][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 6094.801579][ C2] Workqueue: netns cleanup_net [ 6094.801831][ C2] RIP: 0010:queued_spin_lock_slowpath+0x12d/0xb90 [ 6094.802165][ C2] Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 43 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00 [ 6094.803153][ C2] RSP: 0018:ffffc9000052f3e0 EFLAGS: 00000202 [ 6094.803468][ C2] RAX: 0000000000000000 RBX: 000000006b6b6b6b RCX: ffffffff98ab3f0c [ 6094.803875][ C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800623f408 [ 6094.804286][ C2] RBP: ffff88800623f408 R08: 0000000000000000 R09: ffffed1000c47e81 [ 6094.804693][ C2] R10: 0000000000000003 R11: ffff888035bfc508 R12: 0000000000000003 [ 6094.805100][ C2] R13: ffffed1000c47e81 R14: 0000000000000001 R15: 1ffff920000a5e7d [ 6094.805507][ C2] FS: 0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000 [ 6094.805961][ C2] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6094.806299][ C2] CR2: 00007fa0f7829000 CR3: 000000001b734002 CR4: 0000000000770ef0 [ 6094.806707][ C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 6094.807115][ C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 6094.807519][ C2] PKRU: 55555554 [ 6094.807704][ C2] Call Trace: [ 6094.807878][ C2] [ 6094.808030][ C2] ? rcu_dump_cpu_stacks+0x2a3/0x4c0 [ 6094.808308][ C2] ? print_cpu_stall+0x263/0x6a0 [ 6094.808566][ C2] ? check_cpu_stall+0x284/0x500 [ 6094.808821][ C2] ? debug_object_deactivate+0x216/0x3a0 [ 6094.809112][ C2] ? rcu_pending+0x92/0x360 [ 6094.809350][ C2] ? rcu_sched_clock_irq+0x107/0x3f0 [ 6094.809623][ C2] ? update_process_times+0xb9/0x110 [ 6094.809897][ C2] ? tick_sched_handle+0x67/0x130 [ 6094.810158][ C2] ? tick_nohz_highres_handler+0xa7/0xd0 [ 6094.810451][ C2] ? __run_hrtimer+0x1c0/0x710 [ 6094.810699][ C2] ? __pfx_tick_nohz_highres_handler+0x10/0x10 [ 6094.811016][ C2] ? __hrtimer_run_queues+0x197/0x270 [ 6094.811297][ C2] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 6094.811589][ C2] ? kvm_clock_get_cycles+0x18/0x30 [ 6094.811858][ C2] ? ktime_get_update_offsets_now+0xe1/0x2d0 [ 6094.812171][ C2] ? hrtimer_interrupt+0x2c3/0x770 [ 6094.812438][ C2] ? __sysvec_apic_timer_interrupt+0xbe/0x380 [ 6094.812753][ C2] ? sysvec_apic_timer_interrupt+0x70/0x80 [ 6094.813056][ C2] [ 6094.813209][ C2] [ 6094.813361][ C2] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 6094.813682][ C2] ? queued_spin_lock_slowpath+0xa0c/0xb90 [ 6094.813988][ C2] ? queued_spin_lock_slowpath+0x12d/0xb90 [ 6094.814290][ C2] ? __pfx_queued_spin_lock_slowpath+0x10/0x10 [ 6094.814607][ C2] ? __pfx___schedule+0x10/0x10 [ 6094.814862][ C2] do_raw_spin_lock+0x1ec/0x270 [ 6094.815117][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 6094.815396][ C2] ? __pfx_do_raw_spin_trylock+0x10/0x10 [ 6094.815688][ C2] ? lock_acquire+0x1c1/0x220 [ 6094.815931][ C2] ? __mutex_lock+0x33e/0xb10 [ 6094.816174][ C2] ? __mutex_lock+0x811/0xb10 [ 6094.816419][ C2] _raw_spin_lock+0x67/0x80 [ 6094.816655][ C2] __mutex_lock+0x33e/0xb10 [ 6094.816889][ C2] ? __lock_release+0x40f/0x880 [ 6094.817141][ C2] ? __pfx___lock_release+0x10/0x10 [ 6094.817409][ C2] ? refcount_dec_and_mutex_lock+0x35/0x90 [ 6094.817712][ C2] ? __pfx___mutex_lock+0x10/0x10 [ 6094.817973][ C2] ? __pfx___up_read+0x10/0x10 [ 6094.818223][ C2] ? refcount_dec_not_one+0x6b/0x180 [ 6094.818498][ C2] ? tc_setup_cb_destroy+0x22b/0x300 [ 6094.818771][ C2] ? __pfx_refcount_dec_not_one+0x10/0x10 [ 6094.819069][ C2] ? refcount_dec_and_mutex_lock+0x35/0x90 [ 6094.819368][ C2] refcount_dec_and_mutex_lock+0x35/0x90 [ 6094.819662][ C2] __tcf_action_put+0x3d/0xf0 [ 6094.819906][ C2] tcf_action_destroy+0x43/0x130 [ 6094.820161][ C2] ? hlock_class+0x4e/0x130 [ 6094.820399][ C2] tcf_exts_destroy+0x3c/0xb0 [ 6094.820644][ C2] __fl_destroy_filter+0x54/0x120 [cls_flower] [ 6094.820970][ C2] __fl_put+0x21a/0x290 [cls_flower] [ 6094.821250][ C2] ? __pfx___fl_put+0x10/0x10 [cls_flower] [ 6094.821555][ C2] ? __fl_delete+0x33f/0x750 [cls_flower] [ 6094.821856][ C2] __fl_delete+0x4e4/0x750 [cls_flower] [ 6094.822147][ C2] ? __pfx___fl_delete+0x10/0x10 [cls_flower] [ 6094.822465][ C2] ? __lock_release+0x40f/0x880 [ 6094.822718][ C2] ? __mutex_lock+0x26e/0xb10 [ 6094.822964][ C2] fl_destroy+0x1ae/0x300 [cls_flower] [ 6094.823252][ C2] ? __pfx_fl_destroy+0x10/0x10 [cls_flower] [ 6094.823570][ C2] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 6094.823880][ C2] tcf_proto_destroy+0x6e/0x2e0 [ 6094.824137][ C2] tcf_chain_flush+0x1e0/0x320 [ 6094.824385][ C2] __tcf_block_put+0x113/0x270 [ 6094.824635][ C2] clsact_destroy+0x1ee/0x800 [sch_ingress] [ 6094.824944][ C2] __qdisc_destroy+0xee/0x340 [ 6094.825187][ C2] dev_shutdown+0x129/0x350 [ 6094.825422][ C2] unregister_netdevice_many_notify+0x4fe/0x1180 [ 6094.825748][ C2] ? rtnl_is_locked+0x15/0x20 [ 6094.825994][ C2] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 6094.826315][ C2] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 6094.826663][ C2] ? mutex_is_locked+0x17/0x50 [ 6094.826913][ C2] ? nexthop_net_exit_batch_rtnl+0x83/0x210 [ 6094.827220][ C2] cleanup_net+0x4cf/0xb60 [ 6094.827449][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 6094.827739][ C2] ? __pfx_cleanup_net+0x10/0x10 [ 6094.827995][ C2] ? lock_acquire+0x1c1/0x220 [ 6094.828235][ C2] ? process_one_work+0x714/0x1310 [ 6094.828500][ C2] process_one_work+0x78c/0x1310 [ 6094.828758][ C2] ? hlock_class+0x4e/0x130 [ 6094.828993][ C2] ? __pfx_process_one_work+0x10/0x10 [ 6094.829271][ C2] ? assign_work+0x16c/0x240 [ 6094.829511][ C2] worker_thread+0x73d/0x1010 [ 6094.829754][ C2] ? lockdep_hardirqs_on_prepare.part.0+0x1b1/0x370 [ 6094.830092][ C2] ? __pfx_worker_thread+0x10/0x10 [ 6094.830358][ C2] ? __pfx_worker_thread+0x10/0x10 [ 6094.830621][ C2] kthread+0x28f/0x360 [ 6094.830832][ C2] ? __pfx_kthread+0x10/0x10 [ 6094.831071][ C2] ret_from_fork+0x31/0x70 [ 6094.831301][ C2] ? __pfx_kthread+0x10/0x10 [ 6094.831539][ C2] ret_from_fork_asm+0x1b/0x30 [ 6094.831791][ C2] exit [?2004l exit Powering off. [ 6117.110436][ T8874] ACPI: PM: Preparing to enter system sleep state S5 [ 6117.111221][ T8874] kvm: exiting hardware virtualization [ 6117.111562][ T8874] reboot: Power down