======================================
| [ 3526.906449][   T71] ==================================================================
| [ 3526.906960][ T71] BUG: KASAN: slab-use-after-free in __mutex_lock (kernel/locking/mutex.c:587 kernel/locking/mutex.c:752) 
| [ 3526.907390][   T71] Read of size 8 at addr ffff888022f2b268 by task kworker/u8:1/71
| [ 3526.907823][   T71]
[ 3526.908412][   T71] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3526.909066][   T71] Workqueue: netns cleanup_net
[ 3526.909332][   T71] Call Trace:
[ 3526.909509][   T71]  <TASK>
[ 3526.909685][ T71] dump_stack_lvl (lib/dump_stack.c:107) 
[ 3526.909953][ T71] print_address_description.constprop.0 (mm/kasan/report.c:378) 
[ 3526.910298][ T71] ? __mutex_lock (kernel/locking/mutex.c:587 kernel/locking/mutex.c:752) 
[ 3526.910545][ T71] print_report (mm/kasan/report.c:489) 
[ 3526.910777][ T71] ? kasan_addr_to_slab (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/page-flags.h:481 mm/kasan/../slab.h:206 mm/kasan/common.c:38) 
[ 3526.911040][ T71] kasan_report (mm/kasan/report.c:603) 
[ 3526.911269][ T71] ? __mutex_lock (kernel/locking/mutex.c:587 kernel/locking/mutex.c:752) 
[ 3526.911515][ T71] __mutex_lock (kernel/locking/mutex.c:587 kernel/locking/mutex.c:752) 
[ 3526.911755][ T71] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3526.912007][ T71] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3526.912313][ T71] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3526.912575][ T71] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3526.912944][ T71] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3526.913243][ T71] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3526.913541][ T71] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3526.913857][ T71] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3526.914162][ T71] __tcf_action_put (net/sched/act_api.c:377) 
[ 3526.914412][ T71] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3526.914692][ T71] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3526.914955][ T71] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3526.915304][ T71] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3526.915649][ T71] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3526.915988][ T71] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3526.916344][ T71] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3526.916656][ T71] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3526.916930][ T71] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3526.917181][ T71] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3526.917519][ T71] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3526.917790][ T71] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3526.918053][ T71] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3526.918403][ T71] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3526.918661][ T71] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3526.919035][ T71] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3526.919387][ T71] default_device_exit_batch (net/core/dev.c:11629) 
[ 3526.919700][ T71] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3526.920027][ T71] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3526.920281][ T71] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3526.920520][ T71] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3526.920834][ T71] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3526.921111][ T71] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3526.921377][ T71] ? process_one_work (kernel/workqueue.c:2609) 
[ 3526.921693][ T71] process_one_work (kernel/workqueue.c:2633) 
[ 3526.921954][ T71] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3526.922221][ T71] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3526.922525][ T71] ? assign_work (kernel/workqueue.c:1101) 
[ 3526.922798][ T71] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3526.923067][ T71] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3526.923438][ T71] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3526.923730][ T71] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3526.924027][ T71] kthread (kernel/kthread.c:388) 
[ 3526.924249][ T71] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3526.924527][ T71] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3526.924791][ T71] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3526.925031][ T71] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3552.564894][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 3552.565389][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 3552.565881][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 3552.566373][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 3552.567349][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3552.567980][    C3] Workqueue: netns cleanup_net
[ 3552.568234][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 3552.568505][ C3] Code: 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	41 57                	push   %r15
  1a:	41 56                	push   %r14
  1c:	41 55                	push   %r13
  1e:	41 54                	push   %r12
  20:	55                   	push   %rbp
  21:	53                   	push   %rbx
  22:	48 83 ec 70          	sub    $0x70,%rsp
  26:	9c                   	pushf
  27:	8f 04 24             	pop    (%rsp)
  2a:*	0f 01 ca             	clac		<-- trapping instruction
  2d:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  34:	1f 00 
  36:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3d:	85 c0                	test   %eax,%eax
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	0f 01 ca             	clac
   3:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   a:	1f 00 
   c:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  13:	85 c0                	test   %eax,%eax
  15:	0f                   	.byte 0xf
[ 3552.569503][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 3552.569820][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 3552.570230][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3552.570640][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 3552.571051][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3552.571460][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3552.571869][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3552.572332][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3552.572673][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3552.573087][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3552.573496][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3552.573905][    C3] PKRU: 55555554
[ 3552.574092][    C3] Call Trace:
[ 3552.574270][    C3]  <IRQ>
[ 3552.574430][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 3552.574702][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3552.574955][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 3552.575242][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3552.575525][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3552.575820][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3552.576095][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3552.576420][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3552.576690][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3552.577008][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3552.577313][    C3]  </IRQ>
[ 3552.577467][    C3]  <TASK>
[ 3552.577620][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3552.577954][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3552.578253][ C3] ? kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 3552.578492][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 3552.578750][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3552.579040][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3552.579362][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3552.579666][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3552.579926][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3552.580205][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3552.580500][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3552.580743][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3552.580993][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3552.581230][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3552.581469][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3552.581719][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3552.582026][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3552.582290][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3552.582637][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3552.582913][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3552.583213][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3552.583515][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3552.583813][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3552.584063][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3552.584323][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3552.584576][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3552.584902][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3552.585199][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3552.585521][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3552.585835][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3552.586092][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3552.586345][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3552.586597][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3552.586912][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3552.587161][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3552.587401][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3552.587734][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3552.587986][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3552.588337][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3552.588664][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3552.588955][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3552.589276][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3552.589524][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3552.589757][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3552.590051][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3552.590311][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3552.590556][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3552.590826][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3552.591087][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3552.591325][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3552.591606][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3552.591847][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3552.592099][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3552.592441][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3552.592708][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3552.592973][ C3] kthread (kernel/kthread.c:388) 
[ 3552.593187][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3552.593428][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3552.593663][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3552.593902][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3552.594160][    C3]  </TASK>
| [ 3552.908230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3552.908603][    C3] rcu: 3-....: (25935 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=6120
| [ 3552.909170][    C3] rcu: (t=26001 jiffies g=2723341 q=5623 ncpus=4)
[ 3552.910000][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3552.910638][    C3] Workqueue: netns cleanup_net
[ 3552.910894][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3552.911229][ C3] Code: 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 be 04 00 00 00 48 89 ef e8 d0 79 e9 fd <41> 0f b6 45 00 41 38 c4 7c 08 84 c0 0f 85 42 09 00 00 8b 5d 00 85
All code
========
   0:	01 00                	add    %eax,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   b:	fc ff df 
   e:	49 c1 ed 03          	shr    $0x3,%r13
  12:	41 83 e4 07          	and    $0x7,%r12d
  16:	49 01 c5             	add    %rax,%r13
  19:	41 83 c4 03          	add    $0x3,%r12d
  1d:	be 04 00 00 00       	mov    $0x4,%esi
  22:	48 89 ef             	mov    %rbp,%rdi
  25:	e8 d0 79 e9 fd       	call   0xfffffffffde979fa
  2a:*	41 0f b6 45 00       	movzbl 0x0(%r13),%eax		<-- trapping instruction
  2f:	41 38 c4             	cmp    %al,%r12b
  32:	7c 08                	jl     0x3c
  34:	84 c0                	test   %al,%al
  36:	0f 85 42 09 00 00    	jne    0x97e
  3c:	8b 5d 00             	mov    0x0(%rbp),%ebx
  3f:	85                   	.byte 0x85

Code starting with the faulting instruction
===========================================
   0:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
   5:	41 38 c4             	cmp    %al,%r12b
   8:	7c 08                	jl     0x12
   a:	84 c0                	test   %al,%al
   c:	0f 85 42 09 00 00    	jne    0x954
  12:	8b 5d 00             	mov    0x0(%rbp),%ebx
  15:	85                   	.byte 0x85
[ 3552.912230][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000202
[ 3552.912548][    C3] RAX: 0000000000000001 RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 3552.912961][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3552.913372][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3552.913782][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3552.914196][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3552.914614][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3552.915076][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3552.915419][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3552.915830][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3552.916245][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3552.916655][    C3] PKRU: 55555554
[ 3552.916843][    C3] Call Trace:
[ 3552.917019][    C3]  <IRQ>
[ 3552.917172][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 3552.917456][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 3552.917717][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 3552.917977][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 3552.918273][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 3552.918513][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 3552.918792][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 3552.919068][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 3552.919335][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 3552.919633][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3552.919882][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 3552.920202][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3552.920487][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3552.920783][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3552.921056][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3552.921374][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3552.921644][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3552.921965][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3552.922273][    C3]  </IRQ>
[ 3552.922429][    C3]  <TASK>
[ 3552.922583][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3552.922912][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3552.923211][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3552.923509][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3552.923832][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3552.924138][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3552.924396][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3552.924686][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3552.924979][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3552.925226][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3552.925475][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3552.925711][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3552.925953][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3552.926204][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3552.926510][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3552.926773][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3552.927118][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3552.927395][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3552.927702][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3552.928008][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3552.928305][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3552.928556][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3552.928816][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3552.929065][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3552.929391][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3552.929688][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3552.930013][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3552.930328][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3552.930585][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3552.930836][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3552.931087][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3552.931406][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3552.931655][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3552.931892][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3552.932225][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3552.932477][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3552.932828][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3552.933154][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3552.933449][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3552.933772][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3552.934018][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3552.934252][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3552.934554][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3552.934813][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3552.935058][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3552.935327][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3552.935588][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3552.935827][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3552.936109][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3552.936353][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3552.936598][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3552.936955][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3552.937222][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3552.937488][ C3] kthread (kernel/kthread.c:388) 
[ 3552.937701][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3552.937943][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3552.938176][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3552.938417][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3560.775259][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 33573 jiffies s: 467069 root: 0x8/.
| [ 3560.775932][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3560.776324][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 3560.776620][    C3] NMI backtrace for cpu 3
[ 3560.776634][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3560.776638][    C3] Workqueue: netns cleanup_net
[ 3560.776649][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 3560.776656][ C3] Code: 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 <44> 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb
All code
========
   0:	6c                   	insb   (%dx),%es:(%rdi)
   1:	24 30                	and    $0x30,%al
   3:	e8 7c f5 ff ff       	call   0xfffffffffffff584
   8:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
   d:	e8 92 fa ff ff       	call   0xfffffffffffffaa4
  12:	0f b6 d3             	movzbl %bl,%edx
  15:	48 89 ee             	mov    %rbp,%rsi
  18:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  1d:	e8 02 fd ff ff       	call   0xfffffffffffffd24
  22:	ff 34 24             	push   (%rsp)
  25:	9d                   	popf
  26:	48 83 c4 70          	add    $0x70,%rsp
  2a:*	44 89 e0             	mov    %r12d,%eax		<-- trapping instruction
  2d:	5b                   	pop    %rbx
  2e:	5d                   	pop    %rbp
  2f:	41 5c                	pop    %r12
  31:	41 5d                	pop    %r13
  33:	41 5e                	pop    %r14
  35:	41 5f                	pop    %r15
  37:	c3                   	ret
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	cc                   	int3
  3c:	45 31 e4             	xor    %r12d,%r12d
  3f:	eb                   	.byte 0xeb

Code starting with the faulting instruction
===========================================
   0:	44 89 e0             	mov    %r12d,%eax
   3:	5b                   	pop    %rbx
   4:	5d                   	pop    %rbp
   5:	41 5c                	pop    %r12
   7:	41 5d                	pop    %r13
   9:	41 5e                	pop    %r14
   b:	41 5f                	pop    %r15
   d:	c3                   	ret
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	cc                   	int3
  12:	45 31 e4             	xor    %r12d,%r12d
  15:	eb                   	.byte 0xeb
[ 3560.776659][    C3] RSP: 0018:ffffc9000051f498 EFLAGS: 00000282
[ 3560.776661][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 3560.776663][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3560.776664][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3560.776666][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 3560.776667][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 3560.776669][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3560.776671][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3560.776674][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3560.776675][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3560.776676][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3560.776678][    C3] PKRU: 55555554
[ 3560.776679][    C3] Call Trace:
[ 3560.776683][    C3]  <NMI>
[ 3560.776688][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 3560.776694][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 3560.776700][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 3560.776705][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 3560.776711][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 3560.776714][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 3560.776718][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3560.776724][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3560.776727][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 3560.776730][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 3560.776734][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 3560.776737][    C3]  </NMI>
[ 3560.776737][    C3]  <TASK>
[ 3560.776739][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3560.776744][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3560.776748][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3560.776752][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3560.776760][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3560.776762][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3560.776766][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3560.776768][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3560.776775][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3560.776778][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3560.776782][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3560.776784][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3560.776791][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3560.776793][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3560.776797][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3560.776800][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3560.776805][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3560.776809][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3560.776817][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3560.776824][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3560.776828][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3560.776831][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3560.776839][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3560.776847][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3560.776852][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3560.776857][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3560.776861][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3560.776865][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3560.776870][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3560.776878][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3560.776883][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3560.776887][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3560.776893][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3560.776898][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3560.776901][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3560.776905][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3560.776908][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3560.776911][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3560.776915][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3560.776918][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3560.776921][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3560.776924][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3560.776926][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3560.776932][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3560.776936][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3560.776940][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3560.776944][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3560.776947][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3560.776950][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3560.776954][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3560.776957][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3560.776959][ C3] kthread (kernel/kthread.c:388) 
[ 3560.776963][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3560.776965][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3560.776969][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3560.776971][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3588.564958][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 3588.565476][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 3588.565983][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 3588.566481][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 3588.567497][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3588.568150][    C3] Workqueue: netns cleanup_net
[ 3588.568406][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:585) 
[ 3588.568696][ C3] Code: 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 ff ff 41 89 c4 84 c0 0f 84 9c 00 00 00 e8 ff a7 ba ff 41
All code
========
   0:	9c                   	pushf
   1:	8f 04 24             	pop    (%rsp)
   4:	0f 01 ca             	clac
   7:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   e:	1f 00 
  10:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  17:	85 c0                	test   %eax,%eax
  19:	0f 85 b7 00 00 00    	jne    0xd6
  1f:	48 89 fd             	mov    %rdi,%rbp
  22:	49 89 f6             	mov    %rsi,%r14
  25:	89 d3                	mov    %edx,%ebx
  27:	49 89 cd             	mov    %rcx,%r13
  2a:*	e8 0f f7 ff ff       	call   0xfffffffffffff73e		<-- trapping instruction
  2f:	41 89 c4             	mov    %eax,%r12d
  32:	84 c0                	test   %al,%al
  34:	0f 84 9c 00 00 00    	je     0xd6
  3a:	e8 ff a7 ba ff       	call   0xffffffffffbaa83e
  3f:	41                   	rex.B

Code starting with the faulting instruction
===========================================
   0:	e8 0f f7 ff ff       	call   0xfffffffffffff714
   5:	41 89 c4             	mov    %eax,%r12d
   8:	84 c0                	test   %al,%al
   a:	0f 84 9c 00 00 00    	je     0xac
  10:	e8 ff a7 ba ff       	call   0xffffffffffbaa814
  15:	41                   	rex.B
[ 3588.569731][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000246
[ 3588.570055][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 3588.570483][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3588.570912][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3588.571336][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3588.571756][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 3588.572182][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3588.572644][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3588.573003][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3588.573430][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3588.573848][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3588.574282][    C3] PKRU: 55555554
[ 3588.574487][    C3] Call Trace:
[ 3588.574663][    C3]  <IRQ>
[ 3588.574818][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 3588.575102][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3588.575362][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 3588.575649][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3588.575947][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3588.576247][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3588.576523][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3588.576856][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3588.577128][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3588.577460][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3588.577772][    C3]  </IRQ>
[ 3588.577928][    C3]  <TASK>
[ 3588.578085][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3588.578427][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3588.578750][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3588.579070][ C3] ? kasan_report (mm/kasan/report.c:585) 
[ 3588.579326][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3588.579627][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3588.579949][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3588.580271][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3588.580545][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3588.580827][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3588.581133][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3588.581382][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3588.581638][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3588.581882][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3588.582130][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3588.582398][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3588.582706][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3588.582970][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3588.583317][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3588.583596][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3588.583893][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3588.584198][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3588.584508][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3588.584761][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3588.585021][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3588.585271][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3588.585598][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3588.585896][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3588.586220][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3588.586537][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3588.586792][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3588.587043][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3588.587297][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3588.587615][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3588.587864][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3588.588102][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3588.588436][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3588.588689][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3588.589037][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3588.589381][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3588.589683][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3588.590018][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3588.590267][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3588.590521][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3588.590814][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3588.591086][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3588.591333][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3588.591610][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3588.591886][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3588.592127][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3588.592411][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3588.592655][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3588.592901][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3588.593249][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3588.593518][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3588.593805][ C3] kthread (kernel/kthread.c:388) 
[ 3588.594024][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3588.594285][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3588.594527][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3588.594770][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3616.564903][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 3616.565402][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 3616.565897][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 3616.566391][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 3616.567373][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3616.568010][    C3] Workqueue: netns cleanup_net
[ 3616.568269][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 3616.568549][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 3616.569560][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 3616.569877][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 3616.570291][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3616.570704][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3616.571133][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3616.571549][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 3616.571961][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3616.572425][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3616.572769][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3616.573185][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3616.573599][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3616.574009][    C3] PKRU: 55555554
[ 3616.574202][    C3] Call Trace:
[ 3616.574381][    C3]  <IRQ>
[ 3616.574534][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 3616.574807][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3616.575061][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 3616.575348][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3616.575632][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3616.575929][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3616.576204][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3616.576524][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3616.576795][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3616.577117][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3616.577423][    C3]  </IRQ>
[ 3616.577580][    C3]  <TASK>
[ 3616.577734][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3616.578062][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3616.578364][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3616.578663][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 3616.578912][ C3] kasan_report (mm/kasan/report.c:585) 
[ 3616.579142][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 3616.579403][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3616.579695][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3616.580018][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3616.580328][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3616.580588][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3616.580869][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3616.581165][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3616.581412][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3616.581663][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3616.581903][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3616.582143][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3616.582396][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3616.582707][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3616.582971][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3616.583315][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3616.583594][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3616.583896][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3616.584206][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3616.584507][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3616.584758][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3616.585019][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3616.585272][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3616.585600][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3616.585899][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3616.586223][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3616.586541][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3616.586799][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3616.587053][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3616.587309][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3616.587628][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3616.587879][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3616.588119][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3616.588456][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3616.588709][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3616.589061][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3616.589392][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3616.589685][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3616.590008][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3616.590257][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3616.590491][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3616.590790][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3616.591052][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3616.591300][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3616.591573][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3616.591835][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3616.592076][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3616.592360][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3616.592605][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3616.592853][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3616.593196][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3616.593467][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3616.593735][ C3] kthread (kernel/kthread.c:388) 
[ 3616.593950][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3616.594201][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3616.594439][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3616.594680][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3616.594940][    C3]  </TASK>
| [ 3630.942231][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3630.942613][    C3] rcu: 3-....: (103853 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=23570
| [ 3630.943184][    C3] rcu: (t=104035 jiffies g=2723341 q=5634 ncpus=4)
[ 3630.944028][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3630.944663][    C3] Workqueue: netns cleanup_net
[ 3630.944921][ C3] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3630.945258][ C3] Code: 0f 1f 44 00 00 49 89 fd 49 89 fc 41 be 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 <be> 04 00 00 00 48 89 ef e8 d0 79 e9 fd 41 0f b6 45 00 41 38 c4 7c
All code
========
   0:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   5:	49 89 fd             	mov    %rdi,%r13
   8:	49 89 fc             	mov    %rdi,%r12
   b:	41 be 01 00 00 00    	mov    $0x1,%r14d
  11:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  18:	fc ff df 
  1b:	49 c1 ed 03          	shr    $0x3,%r13
  1f:	41 83 e4 07          	and    $0x7,%r12d
  23:	49 01 c5             	add    %rax,%r13
  26:	41 83 c4 03          	add    $0x3,%r12d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 d0 79 e9 fd       	call   0xfffffffffde97a07
  37:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  3c:	41 38 c4             	cmp    %al,%r12b
  3f:	7c                   	.byte 0x7c

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 d0 79 e9 fd       	call   0xfffffffffde979dd
   d:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  12:	41 38 c4             	cmp    %al,%r12b
  15:	7c                   	.byte 0x7c
[ 3630.946262][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 3630.946581][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 3630.946995][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3630.947412][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3630.947824][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3630.948236][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3630.948650][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3630.949113][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3630.949460][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3630.949873][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3630.950285][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3630.950698][    C3] PKRU: 55555554
[ 3630.950886][    C3] Call Trace:
[ 3630.951065][    C3]  <IRQ>
[ 3630.951219][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 3630.951511][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 3630.951772][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 3630.952032][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 3630.952332][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 3630.952571][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 3630.952852][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 3630.953132][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 3630.953403][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 3630.953697][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3630.953948][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 3630.954279][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3630.954561][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3630.954861][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3630.955135][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3630.955454][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3630.955726][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3630.956047][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3630.956355][    C3]  </IRQ>
[ 3630.956510][    C3]  <TASK>
[ 3630.956666][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3630.956994][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3630.957299][ C3] ? queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3630.957602][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3630.957926][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3630.958232][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3630.958493][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3630.958776][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3630.959071][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3630.959320][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3630.959570][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3630.959810][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3630.960051][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3630.960303][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3630.960616][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3630.960880][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3630.961224][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3630.961508][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3630.961807][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3630.962113][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3630.962412][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3630.962664][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3630.962926][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3630.963173][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3630.963501][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3630.963803][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3630.964134][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3630.964452][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3630.964709][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3630.964962][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3630.965216][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3630.965537][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3630.965784][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3630.966025][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3630.966360][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3630.966613][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3630.966964][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3630.967293][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3630.967590][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3630.967912][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3630.968160][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3630.968397][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3630.968690][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3630.968950][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3630.969198][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3630.969470][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3630.969733][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3630.969973][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3630.970258][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3630.970500][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3630.970749][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3630.971093][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3630.971364][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3630.971633][ C3] kthread (kernel/kthread.c:388) 
[ 3630.971850][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3630.972090][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3630.972327][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3630.972570][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3656.564899][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 3656.565393][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 3656.565889][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 3656.566378][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 3656.567358][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3656.567988][    C3] Workqueue: netns cleanup_net
[ 3656.568244][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3656.568576][ C3] Code: 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 be 04 00 00 00 48 89 ef e8 d0 79 e9 fd <41> 0f b6 45 00 41 38 c4 7c 08 84 c0 0f 85 42 09 00 00 8b 5d 00 85
All code
========
   0:	01 00                	add    %eax,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   b:	fc ff df 
   e:	49 c1 ed 03          	shr    $0x3,%r13
  12:	41 83 e4 07          	and    $0x7,%r12d
  16:	49 01 c5             	add    %rax,%r13
  19:	41 83 c4 03          	add    $0x3,%r12d
  1d:	be 04 00 00 00       	mov    $0x4,%esi
  22:	48 89 ef             	mov    %rbp,%rdi
  25:	e8 d0 79 e9 fd       	call   0xfffffffffde979fa
  2a:*	41 0f b6 45 00       	movzbl 0x0(%r13),%eax		<-- trapping instruction
  2f:	41 38 c4             	cmp    %al,%r12b
  32:	7c 08                	jl     0x3c
  34:	84 c0                	test   %al,%al
  36:	0f 85 42 09 00 00    	jne    0x97e
  3c:	8b 5d 00             	mov    0x0(%rbp),%ebx
  3f:	85                   	.byte 0x85

Code starting with the faulting instruction
===========================================
   0:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
   5:	41 38 c4             	cmp    %al,%r12b
   8:	7c 08                	jl     0x12
   a:	84 c0                	test   %al,%al
   c:	0f 85 42 09 00 00    	jne    0x954
  12:	8b 5d 00             	mov    0x0(%rbp),%ebx
  15:	85                   	.byte 0x85
[ 3656.569580][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000202
[ 3656.569898][    C3] RAX: 0000000000000001 RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 3656.570312][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3656.570725][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3656.571137][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3656.571548][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3656.571961][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3656.572425][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3656.572769][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3656.573182][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3656.573593][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3656.574014][    C3] PKRU: 55555554
[ 3656.574201][    C3] Call Trace:
[ 3656.574379][    C3]  <IRQ>
[ 3656.574532][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 3656.574806][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3656.575058][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 3656.575347][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3656.575629][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3656.575926][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3656.576204][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3656.576521][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3656.576796][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3656.577118][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3656.577425][    C3]  </IRQ>
[ 3656.577580][    C3]  <TASK>
[ 3656.577736][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3656.578063][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3656.578365][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3656.578663][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3656.578988][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3656.579297][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3656.579557][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3656.579838][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3656.580131][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3656.580378][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3656.580630][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3656.580868][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3656.581107][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3656.581359][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3656.581668][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3656.581933][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3656.582279][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3656.582557][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3656.582857][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3656.583163][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3656.583460][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3656.583710][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3656.583976][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3656.584225][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3656.584560][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3656.584858][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3656.585183][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3656.585505][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3656.585763][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3656.586016][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3656.586273][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3656.586590][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3656.586843][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3656.587083][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3656.587417][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3656.587667][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3656.588020][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3656.588349][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3656.588641][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3656.588964][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3656.589212][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3656.589445][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3656.589740][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3656.590000][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3656.590246][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3656.590518][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3656.590778][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3656.591019][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3656.591301][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3656.591545][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3656.591793][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3656.592136][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3656.592405][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3656.592675][ C3] kthread (kernel/kthread.c:388) 
[ 3656.592889][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3656.593132][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3656.593368][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3656.593609][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3659.079261][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 131877 jiffies s: 467069 root: 0x8/.
| [ 3659.079933][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3659.080316][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 3659.080600][    C3] NMI backtrace for cpu 3
[ 3659.080608][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3659.080610][    C3] Workqueue: netns cleanup_net
[ 3659.080615][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 3659.080621][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 3659.080623][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 3659.080626][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 3659.080627][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3659.080629][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3659.080631][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3659.080632][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3659.080633][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3659.080635][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3659.080639][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3659.080640][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3659.080641][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3659.080643][    C3] PKRU: 55555554
[ 3659.080644][    C3] Call Trace:
[ 3659.080646][    C3]  <NMI>
[ 3659.080647][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 3659.080653][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 3659.080657][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 3659.080663][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 3659.080666][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 3659.080668][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 3659.080673][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3659.080677][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 3659.080680][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 3659.080683][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 3659.080686][    C3]  </NMI>
[ 3659.080686][    C3]  <TASK>
[ 3659.080688][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3659.080692][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3659.080696][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3659.080700][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3659.080704][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3659.080708][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3659.080711][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3659.080714][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3659.080716][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3659.080720][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3659.080723][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3659.080726][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3659.080728][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3659.080733][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3659.080735][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3659.080739][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3659.080742][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3659.080746][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3659.080749][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3659.080753][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3659.080758][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3659.080761][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3659.080764][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3659.080769][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3659.080776][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3659.080782][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3659.080786][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3659.080790][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3659.080793][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3659.080797][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3659.080803][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3659.080807][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3659.080810][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3659.080814][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3659.080816][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3659.080819][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3659.080823][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3659.080826][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3659.080829][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3659.080832][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3659.080835][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3659.080837][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3659.080840][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3659.080842][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3659.080846][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3659.080850][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3659.080853][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3659.080857][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3659.080860][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3659.080862][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3659.080866][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3659.080869][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3659.080871][ C3] kthread (kernel/kthread.c:388) 
[ 3659.080873][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3659.080875][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3659.080877][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3659.080879][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3684.564895][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 3684.565390][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 3684.565887][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 3684.566377][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 3684.567357][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3684.567986][    C3] Workqueue: netns cleanup_net
[ 3684.568245][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:13 ./arch/x86/include/asm/vdso/processor.h:18 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 3684.568580][ C3] Code: 24 80 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 e9 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2
All code
========
   0:	24 80                	and    $0x80,%al
   2:	00 00                	add    %al,(%rax)
   4:	00 65 48             	add    %ah,0x48(%rbp)
   7:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   e:	0f 85 43 0a 00 00    	jne    0xa57
  14:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  1b:	5b                   	pop    %rbx
  1c:	5d                   	pop    %rbp
  1d:	41 5c                	pop    %r12
  1f:	41 5d                	pop    %r13
  21:	41 5e                	pop    %r14
  23:	41 5f                	pop    %r15
  25:	c3                   	ret
  26:	cc                   	int3
  27:	cc                   	int3
  28:	cc                   	int3
  29:	cc                   	int3
  2a:*	f3 90                	pause		<-- trapping instruction
  2c:	e9 71 ff ff ff       	jmp    0xffffffffffffffa2
  31:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  36:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3d:	0f                   	.byte 0xf
  3e:	84 e2                	test   %ah,%dl

Code starting with the faulting instruction
===========================================
   0:	f3 90                	pause
   2:	e9 71 ff ff ff       	jmp    0xffffffffffffff78
   7:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   c:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  13:	0f                   	.byte 0xf
  14:	84 e2                	test   %ah,%dl
[ 3684.569596][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 3684.569915][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 3684.570329][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3684.570743][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3684.571155][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3684.571568][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3684.571979][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3684.572442][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3684.572787][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3684.573202][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3684.573620][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3684.574041][    C3] PKRU: 55555554
[ 3684.574228][    C3] Call Trace:
[ 3684.574407][    C3]  <IRQ>
[ 3684.574563][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 3684.574834][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3684.575088][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 3684.575375][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3684.575658][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3684.575954][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3684.576229][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3684.576547][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3684.576819][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3684.577139][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3684.577445][    C3]  </IRQ>
[ 3684.577600][    C3]  <TASK>
[ 3684.577754][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3684.578081][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3684.578393][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:13 ./arch/x86/include/asm/vdso/processor.h:18 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 3684.578698][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3684.579019][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3684.579328][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3684.579589][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3684.579868][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3684.580162][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3684.580409][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3684.580659][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3684.580899][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3684.581137][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3684.581389][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3684.581698][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3684.581963][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3684.582308][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3684.582585][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3684.582886][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3684.583189][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3684.583489][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3684.583738][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3684.584005][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3684.584253][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3684.584579][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3684.584877][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3684.585200][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3684.585517][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3684.585775][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3684.586029][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3684.586284][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3684.586599][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3684.586852][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3684.587093][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3684.587428][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3684.587681][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3684.588033][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3684.588363][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3684.588656][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3684.588984][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3684.589235][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3684.589470][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3684.589765][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3684.590027][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3684.590276][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3684.590549][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3684.590811][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3684.591051][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3684.591336][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3684.591580][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3684.591829][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3684.592174][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3684.592444][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3684.592713][ C3] kthread (kernel/kthread.c:388) 
[ 3684.592929][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3684.593172][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3684.593409][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3684.593651][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3687.774815][   T41] INFO: lockdep is turned off.
| [ 3708.976230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3708.976621][    C3] rcu: 3-....: (181773 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=41320
| [ 3708.977196][    C3] rcu: (t=182069 jiffies g=2723341 q=5634 ncpus=4)
[ 3708.978039][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3708.978673][    C3] Workqueue: netns cleanup_net
[ 3708.978934][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 3708.979275][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 3708.980281][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 3708.980604][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 3708.981017][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3708.981432][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3708.981843][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3708.982257][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3708.982669][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3708.983132][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3708.983478][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3708.983899][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3708.984310][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3708.984721][    C3] PKRU: 55555554
[ 3708.984909][    C3] Call Trace:
[ 3708.985088][    C3]  <IRQ>
[ 3708.985242][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 3708.985526][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 3708.985785][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 3708.986046][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 3708.986346][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 3708.986583][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 3708.986864][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 3708.987144][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 3708.987410][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 3708.987704][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3708.987954][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 3708.988278][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3708.988559][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3708.988858][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3708.989132][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3708.989449][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3708.989720][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3708.990038][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3708.990348][    C3]  </IRQ>
[ 3708.990502][    C3]  <TASK>
[ 3708.990660][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3708.990988][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3708.991291][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 3708.991598][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3708.991922][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3708.992225][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3708.992485][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3708.992768][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3708.993065][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3708.993313][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3708.993563][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3708.993807][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3708.994048][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3708.994298][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3708.994604][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3708.994868][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3708.995210][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3708.995492][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3708.995792][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3708.996097][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3708.996396][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3708.996649][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3708.996909][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3708.997155][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3708.997485][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3708.997785][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3708.998110][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3708.998425][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3708.998683][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3708.998935][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3708.999200][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3708.999520][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3708.999770][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3709.000009][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3709.000341][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3709.000596][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3709.000946][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3709.001273][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3709.001568][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3709.001888][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3709.002134][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3709.002370][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3709.002661][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3709.002920][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3709.003166][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3709.003437][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3709.003704][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3709.003942][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3709.004225][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3709.004467][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3709.004713][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3709.005054][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3709.005323][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3709.005590][ C3] kthread (kernel/kthread.c:388) 
[ 3709.005805][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3709.006045][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3709.006281][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3709.006524][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3736.564922][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 3736.565426][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 3736.565922][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 3736.566418][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 3736.567404][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3736.568043][    C3] Workqueue: netns cleanup_net
[ 3736.568298][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/smap.h:56 mm/kasan/report.c:606) 
[ 3736.568570][ C3] Code: 24 20 88 5c 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff <ff> 34 24 9d 48 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3
All code
========
   0:	24 20                	and    $0x20,%al
   2:	88 5c 24 28          	mov    %bl,0x28(%rsp)
   6:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   b:	e8 7c f5 ff ff       	call   0xfffffffffffff58c
  10:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  15:	e8 92 fa ff ff       	call   0xfffffffffffffaac
  1a:	0f b6 d3             	movzbl %bl,%edx
  1d:	48 89 ee             	mov    %rbp,%rsi
  20:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  25:	e8 02 fd ff ff       	call   0xfffffffffffffd2c
  2a:*	ff 34 24             	push   (%rsp)		<-- trapping instruction
  2d:	9d                   	popf
  2e:	48 83 c4 70          	add    $0x70,%rsp
  32:	44 89 e0             	mov    %r12d,%eax
  35:	5b                   	pop    %rbx
  36:	5d                   	pop    %rbp
  37:	41 5c                	pop    %r12
  39:	41 5d                	pop    %r13
  3b:	41 5e                	pop    %r14
  3d:	41 5f                	pop    %r15
  3f:	c3                   	ret

Code starting with the faulting instruction
===========================================
   0:	ff 34 24             	push   (%rsp)
   3:	9d                   	popf
   4:	48 83 c4 70          	add    $0x70,%rsp
   8:	44 89 e0             	mov    %r12d,%eax
   b:	5b                   	pop    %rbx
   c:	5d                   	pop    %rbp
   d:	41 5c                	pop    %r12
   f:	41 5d                	pop    %r13
  11:	41 5e                	pop    %r14
  13:	41 5f                	pop    %r15
  15:	c3                   	ret
[ 3736.569578][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000246
[ 3736.569893][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 3736.570313][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3736.570721][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3736.571136][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 3736.571548][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 3736.571959][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3736.572426][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3736.572771][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3736.573188][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3736.573609][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3736.574022][    C3] PKRU: 55555554
[ 3736.574217][    C3] Call Trace:
[ 3736.574392][    C3]  <IRQ>
[ 3736.574549][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 3736.574821][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3736.575084][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 3736.575372][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3736.575653][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3736.575950][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3736.576230][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3736.576546][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3736.576815][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3736.577140][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3736.577446][    C3]  </IRQ>
[ 3736.577599][    C3]  <TASK>
[ 3736.577756][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3736.578090][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3736.578390][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3736.578689][ C3] ? kasan_report (./arch/x86/include/asm/smap.h:56 mm/kasan/report.c:606) 
[ 3736.578925][ C3] ? kasan_report (mm/kasan/report.c:585) 
[ 3736.579173][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3736.579479][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 3736.579736][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3736.580031][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3736.580358][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3736.580662][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3736.580921][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3736.581206][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3736.581503][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3736.581753][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3736.582000][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3736.582247][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3736.582503][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3736.582752][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3736.583068][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3736.583352][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3736.583701][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3736.583977][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3736.584285][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3736.584589][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3736.584887][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3736.585143][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3736.585403][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3736.585647][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3736.585974][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3736.586281][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3736.586605][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3736.586920][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3736.587183][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3736.587437][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3736.587690][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3736.588008][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3736.588261][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3736.588502][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3736.588836][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3736.589097][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3736.589450][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3736.589776][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3736.590080][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3736.590402][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3736.590649][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3736.590884][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3736.591184][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3736.591445][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3736.591692][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3736.591962][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3736.592230][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3736.592468][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3736.592755][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3736.592996][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3736.593250][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3736.593600][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3736.593868][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3736.594143][ C3] kthread (kernel/kthread.c:388) 
[ 3736.594360][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3736.594601][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3736.594836][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3736.595085][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3757.383254][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 230181 jiffies s: 467069 root: 0x8/.
| [ 3757.383927][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3757.384305][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 3757.384588][    C3] NMI backtrace for cpu 3
[ 3757.384601][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3757.384604][    C3] Workqueue: netns cleanup_net
[ 3757.384614][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 3757.384621][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 3757.384624][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 3757.384627][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 3757.384629][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3757.384630][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3757.384632][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3757.384633][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3757.384635][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3757.384637][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3757.384641][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3757.384643][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3757.384644][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3757.384646][    C3] PKRU: 55555554
[ 3757.384646][    C3] Call Trace:
[ 3757.384651][    C3]  <NMI>
[ 3757.384655][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 3757.384662][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 3757.384667][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 3757.384673][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 3757.384678][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 3757.384681][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 3757.384686][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3757.384692][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 3757.384695][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 3757.384698][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 3757.384701][    C3]  </NMI>
[ 3757.384701][    C3]  <TASK>
[ 3757.384703][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3757.384708][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3757.384712][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3757.384716][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3757.384720][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3757.384727][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3757.384730][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3757.384733][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3757.384735][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3757.384741][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3757.384744][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3757.384749][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3757.384751][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3757.384757][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3757.384760][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3757.384764][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3757.384767][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3757.384772][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3757.384775][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3757.384783][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3757.384790][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3757.384794][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3757.384798][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3757.384806][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3757.384813][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3757.384819][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3757.384824][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3757.384828][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3757.384832][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3757.384837][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3757.384845][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3757.384849][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3757.384853][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3757.384860][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3757.384864][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3757.384867][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3757.384871][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3757.384875][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3757.384879][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3757.384882][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3757.384885][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3757.384888][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3757.384891][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3757.384893][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3757.384899][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3757.384903][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3757.384906][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3757.384911][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3757.384914][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3757.384917][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3757.384921][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3757.384924][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3757.384926][ C3] kthread (kernel/kthread.c:388) 
[ 3757.384930][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3757.384932][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3757.384935][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3757.384937][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3784.564931][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 3784.565432][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 3784.565930][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 3784.566430][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 3784.567413][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3784.568053][    C3] Workqueue: netns cleanup_net
[ 3784.568309][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:88 mm/kasan/generic.c:122 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3784.568611][ C3] Code: d8 eb 0d 48 83 c0 08 48 39 d0 0f 84 b0 00 00 00 48 83 38 00 74 ed 48 8d 50 08 eb 09 48 83 c0 01 48 39 c2 74 2c 80 38 00 74 f2 <48> 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49
All code
========
   0:	d8 eb                	fsubr  %st(3),%st
   2:	0d 48 83 c0 08       	or     $0x8c08348,%eax
   7:	48 39 d0             	cmp    %rdx,%rax
   a:	0f 84 b0 00 00 00    	je     0xc0
  10:	48 83 38 00          	cmpq   $0x0,(%rax)
  14:	74 ed                	je     0x3
  16:	48 8d 50 08          	lea    0x8(%rax),%rdx
  1a:	eb 09                	jmp    0x25
  1c:	48 83 c0 01          	add    $0x1,%rax
  20:	48 39 c2             	cmp    %rax,%rdx
  23:	74 2c                	je     0x51
  25:	80 38 00             	cmpb   $0x0,(%rax)
  28:	74 f2                	je     0x1c
  2a:*	48 89 c2             	mov    %rax,%rdx		<-- trapping instruction
  2d:	b8 01 00 00 00       	mov    $0x1,%eax
  32:	48 85 d2             	test   %rdx,%rdx
  35:	0f 84 4c ff ff ff    	je     0xffffffffffffff87
  3b:	41 83 e2 07          	and    $0x7,%r10d
  3f:	49                   	rex.WB

Code starting with the faulting instruction
===========================================
   0:	48 89 c2             	mov    %rax,%rdx
   3:	b8 01 00 00 00       	mov    $0x1,%eax
   8:	48 85 d2             	test   %rdx,%rdx
   b:	0f 84 4c ff ff ff    	je     0xffffffffffffff5d
  11:	41 83 e2 07          	and    $0x7,%r10d
  15:	49                   	rex.WB
[ 3784.569617][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000282
[ 3784.569934][    C3] RAX: ffffed10045e5641 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 3784.570348][    C3] RDX: ffffed10045e5642 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3784.570760][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 3784.571171][    C3] R10: ffff888022f2b20b R11: 205d313754202020 R12: 0000000000000003
[ 3784.571583][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3784.571995][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3784.572458][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3784.572802][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3784.573216][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3784.573636][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3784.574056][    C3] PKRU: 55555554
[ 3784.574243][    C3] Call Trace:
[ 3784.574424][    C3]  <IRQ>
[ 3784.574578][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 3784.574849][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3784.575099][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 3784.575387][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3784.575668][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3784.575962][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3784.576237][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3784.576556][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3784.576832][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3784.577151][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3784.577457][    C3]  </IRQ>
[ 3784.577616][    C3]  <TASK>
[ 3784.577770][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3784.578101][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3784.578401][ C3] ? kasan_check_range (mm/kasan/generic.c:88 mm/kasan/generic.c:122 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3784.578664][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3784.578968][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3784.579291][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3784.579600][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3784.579876][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3784.580156][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3784.580448][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3784.580694][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3784.580944][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3784.581181][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3784.581425][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3784.581680][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3784.581985][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3784.582247][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3784.582597][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3784.582880][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3784.583177][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3784.583489][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3784.583783][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3784.584036][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3784.584295][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3784.584541][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3784.584875][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3784.585171][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3784.585494][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3784.585815][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3784.586071][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3784.586326][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3784.586575][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3784.586891][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3784.587139][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3784.587377][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3784.587715][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3784.587966][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3784.588331][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3784.588655][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3784.588952][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3784.589279][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3784.589525][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3784.589755][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3784.590046][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3784.590309][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3784.590553][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3784.590827][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3784.591087][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3784.591327][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3784.591608][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3784.591850][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3784.592095][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3784.592439][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3784.592706][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3784.592971][ C3] kthread (kernel/kthread.c:388) 
[ 3784.593185][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3784.593435][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3784.593668][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3784.593910][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3784.594167][    C3]  </TASK>
| [ 3787.010231][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3787.010620][    C3] rcu: 3-....: (259690 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=59397
| [ 3787.011194][    C3] rcu: (t=260103 jiffies g=2723341 q=5634 ncpus=4)
[ 3787.012036][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3787.012676][    C3] Workqueue: netns cleanup_net
[ 3787.012934][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 3787.013211][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 3787.014227][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 3787.014555][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 3787.014971][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3787.015389][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3787.015804][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 3787.016221][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 3787.016638][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3787.017103][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3787.017458][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3787.017870][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3787.018292][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3787.018712][    C3] PKRU: 55555554
[ 3787.018900][    C3] Call Trace:
[ 3787.019077][    C3]  <IRQ>
[ 3787.019231][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 3787.019522][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 3787.019789][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 3787.020046][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 3787.020349][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 3787.020586][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 3787.020869][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 3787.021153][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 3787.021418][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 3787.021715][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3787.021966][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 3787.022290][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3787.022576][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3787.022871][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3787.023145][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3787.023474][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3787.023748][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3787.024067][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3787.024375][    C3]  </IRQ>
[ 3787.024530][    C3]  <TASK>
[ 3787.024684][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3787.025008][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3787.025315][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3787.025615][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 3787.025858][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 3787.026116][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3787.026404][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3787.026725][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3787.027030][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3787.027290][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3787.027569][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3787.027860][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3787.028106][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3787.028355][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3787.028591][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3787.028831][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3787.029081][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3787.029387][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3787.029649][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3787.029991][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3787.030267][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3787.030564][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3787.030868][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3787.031164][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3787.031416][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3787.031675][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3787.031924][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3787.032251][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3787.032546][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3787.032875][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3787.033194][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3787.033459][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3787.033709][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3787.033959][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3787.034283][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3787.034537][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3787.034774][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3787.035107][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3787.035365][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3787.035720][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3787.036046][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3787.036341][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3787.036663][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3787.036914][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3787.037147][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3787.037445][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3787.037703][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3787.037948][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3787.038223][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3787.038490][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3787.038730][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3787.039011][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3787.039255][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3787.039506][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3787.039859][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3787.040127][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3787.040393][ C3] kthread (kernel/kthread.c:388) 
[ 3787.040608][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3787.040856][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3787.041088][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3787.041336][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3812.564912][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 3812.565414][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 3812.565913][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 3812.566405][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 3812.567393][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3812.568031][    C3] Workqueue: netns cleanup_net
[ 3812.568298][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 3812.568569][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 3812.569579][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 3812.569897][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 3812.570309][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3812.570725][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3812.571143][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 3812.571555][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 3812.571971][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3812.572437][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3812.572776][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3812.573196][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3812.573614][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3812.574029][    C3] PKRU: 55555554
[ 3812.574216][    C3] Call Trace:
[ 3812.574395][    C3]  <IRQ>
[ 3812.574548][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 3812.574826][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3812.575078][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 3812.575370][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3812.575650][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3812.575947][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3812.576226][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3812.576543][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3812.576812][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3812.577131][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3812.577435][    C3]  </IRQ>
[ 3812.577591][    C3]  <TASK>
[ 3812.577746][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3812.578070][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3812.578376][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3812.578679][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 3812.578919][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3812.579216][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3812.579514][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3812.579836][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3812.580139][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3812.580398][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3812.580676][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3812.580971][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3812.581216][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3812.581465][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3812.581704][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3812.581949][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3812.582197][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3812.582505][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3812.582766][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3812.583123][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3812.583405][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3812.583703][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3812.584005][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3812.584308][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3812.584565][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3812.584824][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3812.585069][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3812.585395][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3812.585692][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3812.586020][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3812.586343][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3812.586598][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3812.586848][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3812.587099][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3812.587427][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3812.587682][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3812.587921][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3812.588254][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3812.588511][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3812.588861][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3812.589187][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3812.589487][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3812.589807][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3812.590053][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3812.590301][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3812.590604][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3812.590862][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3812.591107][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3812.591378][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3812.591650][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3812.591894][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3812.592178][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3812.592420][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3812.592667][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3812.593009][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3812.593289][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3812.593561][ C3] kthread (kernel/kthread.c:388) 
[ 3812.593786][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3812.594025][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3812.594261][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3812.594503][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3840.564907][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 3840.565409][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 3840.565901][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 3840.566398][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 3840.567380][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3840.568020][    C3] Workqueue: netns cleanup_net
[ 3840.568283][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 3840.568553][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 3840.569565][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 3840.569882][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 3840.570293][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3840.570711][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 3840.571133][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3840.571544][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3840.571960][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3840.572426][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3840.572767][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3840.573192][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3840.573610][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3840.574019][    C3] PKRU: 55555554
[ 3840.574206][    C3] Call Trace:
[ 3840.574382][    C3]  <IRQ>
[ 3840.574538][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 3840.574809][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3840.575068][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 3840.575360][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3840.575642][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3840.575941][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3840.576222][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3840.576546][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3840.576815][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3840.577133][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3840.577443][    C3]  </IRQ>
[ 3840.577597][    C3]  <TASK>
[ 3840.577752][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3840.578078][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3840.578376][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 3840.578616][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3840.578919][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 3840.579174][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3840.579467][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3840.579787][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3840.580089][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3840.580349][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3840.580625][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3840.580921][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3840.581166][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3840.581414][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3840.581651][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3840.581890][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3840.582136][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3840.582447][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3840.582709][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3840.583059][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3840.583333][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3840.583631][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3840.583933][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3840.584230][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3840.584488][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3840.584747][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3840.584991][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3840.585317][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3840.585623][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3840.585944][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3840.586256][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3840.586519][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3840.586771][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3840.587024][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3840.587349][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3840.587601][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3840.587842][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3840.588175][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3840.588428][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3840.588784][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3840.589116][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3840.589409][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3840.589729][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3840.589984][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3840.590224][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3840.590520][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3840.590779][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3840.591025][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3840.591302][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3840.591570][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3840.591805][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3840.592088][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3840.592329][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3840.592582][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3840.592928][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3840.593207][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3840.593472][ C3] kthread (kernel/kthread.c:388) 
[ 3840.593695][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3840.593934][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3840.594174][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3840.594415][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3855.687255][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 328485 jiffies s: 467069 root: 0x8/.
| [ 3855.687931][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3855.688322][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 3855.688608][    C3] NMI backtrace for cpu 3
[ 3855.688622][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3855.688624][    C3] Workqueue: netns cleanup_net
[ 3855.688636][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:88 mm/kasan/generic.c:122 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3855.688644][ C3] Code: d8 eb 0d 48 83 c0 08 48 39 d0 0f 84 b0 00 00 00 48 83 38 00 74 ed 48 8d 50 08 eb 09 48 83 c0 01 48 39 c2 74 2c 80 38 00 74 f2 <48> 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49
All code
========
   0:	d8 eb                	fsubr  %st(3),%st
   2:	0d 48 83 c0 08       	or     $0x8c08348,%eax
   7:	48 39 d0             	cmp    %rdx,%rax
   a:	0f 84 b0 00 00 00    	je     0xc0
  10:	48 83 38 00          	cmpq   $0x0,(%rax)
  14:	74 ed                	je     0x3
  16:	48 8d 50 08          	lea    0x8(%rax),%rdx
  1a:	eb 09                	jmp    0x25
  1c:	48 83 c0 01          	add    $0x1,%rax
  20:	48 39 c2             	cmp    %rax,%rdx
  23:	74 2c                	je     0x51
  25:	80 38 00             	cmpb   $0x0,(%rax)
  28:	74 f2                	je     0x1c
  2a:*	48 89 c2             	mov    %rax,%rdx		<-- trapping instruction
  2d:	b8 01 00 00 00       	mov    $0x1,%eax
  32:	48 85 d2             	test   %rdx,%rdx
  35:	0f 84 4c ff ff ff    	je     0xffffffffffffff87
  3b:	41 83 e2 07          	and    $0x7,%r10d
  3f:	49                   	rex.WB

Code starting with the faulting instruction
===========================================
   0:	48 89 c2             	mov    %rax,%rdx
   3:	b8 01 00 00 00       	mov    $0x1,%eax
   8:	48 85 d2             	test   %rdx,%rdx
   b:	0f 84 4c ff ff ff    	je     0xffffffffffffff5d
  11:	41 83 e2 07          	and    $0x7,%r10d
  15:	49                   	rex.WB
[ 3855.688647][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000282
[ 3855.688649][    C3] RAX: ffffed10045e5641 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 3855.688651][    C3] RDX: ffffed10045e5642 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3855.688653][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 3855.688655][    C3] R10: ffff888022f2b20b R11: 205d313754202020 R12: 0000000000000003
[ 3855.688656][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3855.688657][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3855.688659][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3855.688663][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3855.688665][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3855.688666][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3855.688667][    C3] PKRU: 55555554
[ 3855.688668][    C3] Call Trace:
[ 3855.688672][    C3]  <NMI>
[ 3855.688676][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 3855.688683][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 3855.688688][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 3855.688694][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 3855.688700][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 3855.688703][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 3855.688708][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3855.688714][ C3] ? kasan_check_range (mm/kasan/generic.c:88 mm/kasan/generic.c:122 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3855.688718][ C3] ? kasan_check_range (mm/kasan/generic.c:88 mm/kasan/generic.c:122 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3855.688721][ C3] ? kasan_check_range (mm/kasan/generic.c:88 mm/kasan/generic.c:122 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3855.688725][    C3]  </NMI>
[ 3855.688725][    C3]  <TASK>
[ 3855.688726][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3855.688730][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3855.688734][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3855.688739][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3855.688745][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3855.688748][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3855.688751][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3855.688754][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3855.688759][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3855.688762][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3855.688767][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3855.688769][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3855.688776][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3855.688779][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3855.688782][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3855.688786][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3855.688790][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3855.688793][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3855.688800][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3855.688808][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3855.688811][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3855.688816][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3855.688824][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3855.688831][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3855.688837][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3855.688841][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3855.688846][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3855.688850][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3855.688854][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3855.688862][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3855.688867][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3855.688871][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3855.688878][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3855.688881][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3855.688885][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3855.688889][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3855.688892][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3855.688896][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3855.688899][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3855.688902][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3855.688905][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3855.688908][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3855.688910][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3855.688916][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3855.688920][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3855.688923][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3855.688928][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3855.688931][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3855.688934][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3855.688938][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3855.688941][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3855.688943][ C3] kthread (kernel/kthread.c:388) 
[ 3855.688947][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3855.688949][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3855.688953][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3855.688954][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3855.688964][    C3]  </TASK>
| [ 3865.045231][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3865.045609][    C3] rcu: 3-....: (337608 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=76956
| [ 3865.046180][    C3] rcu: (t=338138 jiffies g=2723341 q=5634 ncpus=4)
[ 3865.047012][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3865.047643][    C3] Workqueue: netns cleanup_net
[ 3865.047901][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3865.048197][ C3] Code: ff fe 48 39 c7 77 23 44 89 c2 e8 57 e8 ff ff 83 f0 01 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd <4c> 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48
All code
========
   0:	ff                   	(bad)
   1:	fe 48 39             	decb   0x39(%rax)
   4:	c7                   	(bad)
   5:	77 23                	ja     0x2a
   7:	44 89 c2             	mov    %r8d,%edx
   a:	e8 57 e8 ff ff       	call   0xffffffffffffe866
   f:	83 f0 01             	xor    $0x1,%eax
  12:	5b                   	pop    %rbx
  13:	5d                   	pop    %rbp
  14:	41 5c                	pop    %r12
  16:	c3                   	ret
  17:	cc                   	int3
  18:	cc                   	int3
  19:	cc                   	int3
  1a:	cc                   	int3
  1b:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  22:	7f ff ff 
  25:	48 39 c7             	cmp    %rax,%rdi
  28:	76 dd                	jbe    0x7
  2a:*	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10		<-- trapping instruction
  2f:	48 89 fd             	mov    %rdi,%rbp
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4d 89 d1             	mov    %r10,%r9
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   5:	48 89 fd             	mov    %rdi,%rbp
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4d 89 d1             	mov    %r10,%r9
  15:	48                   	rex.W
[ 3865.049199][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000216
[ 3865.049513][    C3] RAX: ffff7fffffffffff RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 3865.049931][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3865.050342][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3865.050751][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3865.051159][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3865.051572][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3865.052032][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3865.052376][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3865.052787][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3865.053202][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3865.053613][    C3] PKRU: 55555554
[ 3865.053800][    C3] Call Trace:
[ 3865.053975][    C3]  <IRQ>
[ 3865.054130][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 3865.054414][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 3865.054673][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 3865.054931][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 3865.055226][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 3865.055464][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 3865.055742][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 3865.056019][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 3865.056284][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 3865.056576][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3865.056824][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 3865.057146][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3865.057427][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3865.057724][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3865.057998][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3865.058313][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3865.058583][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3865.058903][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3865.059206][    C3]  </IRQ>
[ 3865.059363][    C3]  <TASK>
[ 3865.059517][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3865.059842][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3865.060141][ C3] ? kasan_check_range (mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3865.060405][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3865.060695][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3865.061016][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3865.061320][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3865.061581][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3865.061859][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3865.062152][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3865.062399][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3865.062646][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3865.062891][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3865.063131][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3865.063380][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3865.063687][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3865.063948][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3865.064289][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3865.064570][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3865.064869][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3865.065173][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3865.065470][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3865.065722][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3865.065982][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3865.066228][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3865.066554][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3865.066853][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3865.067175][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3865.067488][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3865.067747][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3865.067998][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3865.068250][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3865.068569][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3865.068814][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3865.069055][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3865.069388][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3865.069639][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3865.069988][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3865.070314][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3865.070607][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3865.070926][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3865.071174][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3865.071409][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3865.071702][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3865.071962][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3865.072207][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3865.072479][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3865.072740][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3865.072983][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3865.073268][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3865.073508][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3865.073755][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3865.074096][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3865.074363][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3865.074636][ C3] kthread (kernel/kthread.c:388) 
[ 3865.074852][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3865.075091][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3865.075327][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3865.075568][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3892.564879][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 3892.565368][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 3892.565857][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 3892.566347][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 3892.567313][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3892.567939][    C3] Workqueue: netns cleanup_net
[ 3892.568191][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 3892.568524][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 3892.569516][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 3892.569830][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 3892.570237][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3892.570646][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3892.571055][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3892.571463][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3892.571868][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3892.572326][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3892.572665][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3892.573082][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3892.573495][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3892.573902][    C3] PKRU: 55555554
[ 3892.574089][    C3] Call Trace:
[ 3892.574266][    C3]  <IRQ>
[ 3892.574417][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 3892.574687][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3892.574938][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 3892.575221][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3892.575504][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3892.575799][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3892.576071][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3892.576387][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3892.576656][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3892.576974][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3892.577278][    C3]  </IRQ>
[ 3892.577433][    C3]  <TASK>
[ 3892.577585][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3892.577911][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3892.578215][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 3892.578516][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3892.578837][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3892.579143][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3892.579403][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3892.579681][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3892.579973][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3892.580219][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3892.580469][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3892.580706][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3892.580944][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3892.581193][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3892.581499][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3892.581761][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3892.582103][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3892.582383][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3892.582681][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3892.582991][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3892.583287][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3892.583535][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3892.583798][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3892.584045][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3892.584371][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3892.584666][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3892.584988][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3892.585303][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3892.585559][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3892.585811][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3892.586061][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3892.586379][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3892.586627][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3892.586865][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3892.587196][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3892.587446][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3892.587798][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3892.588124][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3892.588417][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3892.588737][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3892.588984][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3892.589215][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3892.589510][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3892.589769][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3892.590012][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3892.590289][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3892.590548][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3892.590788][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3892.591073][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3892.591317][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3892.591563][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3892.591905][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3892.592179][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3892.592447][ C3] kthread (kernel/kthread.c:388) 
[ 3892.592660][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3892.592907][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3892.593140][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3892.593381][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3920.564874][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 3920.565365][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 3920.565859][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 3920.566343][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 3920.567310][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3920.567934][    C3] Workqueue: netns cleanup_net
[ 3920.568187][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 3920.568519][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 3920.569517][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 3920.569832][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 3920.570239][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3920.570648][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3920.571055][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3920.571461][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3920.571866][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3920.572322][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3920.572667][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3920.573082][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3920.573491][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3920.573899][    C3] PKRU: 55555554
[ 3920.574085][    C3] Call Trace:
[ 3920.574262][    C3]  <IRQ>
[ 3920.574413][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 3920.574682][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3920.574931][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 3920.575215][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3920.575497][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3920.575790][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3920.576062][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3920.576377][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3920.576645][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3920.576962][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3920.577265][    C3]  </IRQ>
[ 3920.577419][    C3]  <TASK>
[ 3920.577572][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3920.577896][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3920.578198][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 3920.578501][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3920.578820][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3920.579125][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3920.579383][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3920.579661][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3920.579952][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3920.580196][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3920.580446][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3920.580684][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3920.580920][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3920.581169][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3920.581476][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3920.581738][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3920.582078][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3920.582354][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3920.582658][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3920.582959][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3920.583255][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3920.583502][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3920.583761][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3920.584007][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3920.584331][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3920.584625][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3920.584948][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3920.585261][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3920.585516][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3920.585767][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3920.586016][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3920.586332][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3920.586583][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3920.586823][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3920.587154][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3920.587404][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3920.587754][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3920.588079][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3920.588371][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3920.588690][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3920.588936][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3920.589167][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3920.589461][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3920.589719][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3920.589961][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3920.590230][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3920.590489][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3920.590727][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3920.591006][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3920.591251][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3920.591497][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3920.591839][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3920.592104][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3920.592371][ C3] kthread (kernel/kthread.c:388) 
[ 3920.592593][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3920.592835][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3920.593068][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3920.593307][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3933.544184][   T41] INFO: lockdep is turned off.
| [ 3943.078230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3943.078610][    C3] rcu: 3-....: (415552 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=93144
| [ 3943.079178][    C3] rcu: (t=416171 jiffies g=2723341 q=5634 ncpus=4)
[ 3943.080006][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3943.080635][    C3] Workqueue: netns cleanup_net
[ 3943.080889][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 3943.081227][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 3943.082221][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 3943.082544][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 3943.082956][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3943.083365][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3943.083774][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3943.084184][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3943.084596][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3943.085054][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3943.085397][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3943.085807][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3943.086220][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3943.086632][    C3] PKRU: 55555554
[ 3943.086817][    C3] Call Trace:
[ 3943.086991][    C3]  <IRQ>
[ 3943.087145][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 3943.087428][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 3943.087688][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 3943.087946][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 3943.088240][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 3943.088478][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 3943.088754][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 3943.089031][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 3943.089296][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 3943.089588][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3943.089836][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 3943.090157][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3943.090436][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3943.090733][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3943.091006][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3943.091322][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3943.091592][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3943.091911][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3943.092216][    C3]  </IRQ>
[ 3943.092373][    C3]  <TASK>
[ 3943.092529][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3943.092854][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3943.093157][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 3943.093461][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3943.093781][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3943.094086][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3943.094344][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3943.094623][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3943.094914][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3943.095159][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3943.095410][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3943.095647][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3943.095886][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3943.096136][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3943.096442][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3943.096704][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3943.097047][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3943.097323][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3943.097620][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3943.097924][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3943.098220][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3943.098468][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3943.098728][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3943.098975][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3943.099302][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3943.099598][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3943.099920][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3943.100233][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3943.100489][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3943.100738][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3943.100989][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3943.101307][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3943.101554][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3943.101792][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3943.102123][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3943.102375][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3943.102730][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3943.103054][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3943.103347][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3943.103667][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3943.103913][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3943.104145][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3943.104438][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3943.104695][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3943.104939][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3943.105208][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3943.105469][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3943.105712][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3943.105993][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3943.106236][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3943.106481][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3943.106823][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3943.107090][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3943.107357][ C3] kthread (kernel/kthread.c:388) 
[ 3943.107570][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3943.107812][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3943.108044][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3943.108286][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3953.991268][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 426789 jiffies s: 467069 root: 0x8/.
| [ 3953.991932][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3953.992315][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 3953.992609][    C3] NMI backtrace for cpu 3
[ 3953.992619][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3953.992622][    C3] Workqueue: netns cleanup_net
[ 3953.992628][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 3953.992635][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 3953.992638][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 3953.992640][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 3953.992642][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3953.992643][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3953.992645][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 3953.992646][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 3953.992648][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3953.992649][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3953.992652][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3953.992654][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3953.992655][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3953.992656][    C3] PKRU: 55555554
[ 3953.992657][    C3] Call Trace:
[ 3953.992660][    C3]  <NMI>
[ 3953.992662][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 3953.992668][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 3953.992673][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 3953.992678][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 3953.992683][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 3953.992685][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 3953.992688][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3953.992695][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3953.992698][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 3953.992701][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 3953.992704][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 3953.992706][    C3]  </NMI>
[ 3953.992707][    C3]  <TASK>
[ 3953.992711][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3953.992715][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3953.992718][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3953.992723][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3953.992728][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3953.992731][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3953.992734][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3953.992736][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3953.992741][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3953.992744][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3953.992748][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3953.992750][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3953.992756][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3953.992759][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3953.992762][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3953.992765][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3953.992770][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3953.992773][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3953.992778][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3953.992784][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3953.992787][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3953.992791][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3953.992798][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3953.992805][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3953.992810][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3953.992815][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3953.992819][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3953.992823][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3953.992827][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3953.992834][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3953.992838][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3953.992842][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3953.992847][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3953.992850][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3953.992852][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3953.992857][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3953.992860][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3953.992863][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3953.992865][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3953.992868][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3953.992871][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3953.992874][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3953.992876][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3953.992880][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3953.992884][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3953.992887][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3953.992891][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3953.992894][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3953.992897][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3953.992900][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3953.992903][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3953.992906][ C3] kthread (kernel/kthread.c:388) 
[ 3953.992908][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3953.992910][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3953.992913][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3953.992915][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 3980.564877][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 3980.565371][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 3980.565862][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 3980.566350][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 3980.567325][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 3980.567961][    C3] Workqueue: netns cleanup_net
[ 3980.568215][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:177 mm/kasan/generic.c:189) 
[ 3980.568513][ C3] Code: ff ff ff ff ff ff fe 48 39 c7 77 23 44 89 c2 e8 57 e8 ff ff 83 f0 01 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff <48> 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	ff                   	(bad)
   3:	ff                   	(bad)
   4:	ff                   	(bad)
   5:	ff                   	(bad)
   6:	fe 48 39             	decb   0x39(%rax)
   9:	c7                   	(bad)
   a:	77 23                	ja     0x2f
   c:	44 89 c2             	mov    %r8d,%edx
   f:	e8 57 e8 ff ff       	call   0xffffffffffffe86b
  14:	83 f0 01             	xor    $0x1,%eax
  17:	5b                   	pop    %rbx
  18:	5d                   	pop    %rbp
  19:	41 5c                	pop    %r12
  1b:	c3                   	ret
  1c:	cc                   	int3
  1d:	cc                   	int3
  1e:	cc                   	int3
  1f:	cc                   	int3
  20:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  27:	7f ff ff 
  2a:*	48 39 c7             	cmp    %rax,%rdi		<-- trapping instruction
  2d:	76 dd                	jbe    0xc
  2f:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  34:	48 89 fd             	mov    %rdi,%rbp
  37:	48                   	rex.W
  38:	b8 00 00 00 00       	mov    $0x0,%eax
  3d:	00 fc                	add    %bh,%ah
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	48 39 c7             	cmp    %rax,%rdi
   3:	76 dd                	jbe    0xffffffffffffffe2
   5:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   a:	48 89 fd             	mov    %rdi,%rbp
   d:	48                   	rex.W
   e:	b8 00 00 00 00       	mov    $0x0,%eax
  13:	00 fc                	add    %bh,%ah
  15:	ff                   	.byte 0xff
[ 3980.569515][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000286
[ 3980.569831][    C3] RAX: ffff7fffffffffff RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 3980.570240][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 3980.570652][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 3980.571064][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 3980.571473][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 3980.571882][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 3980.572346][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3980.572689][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 3980.573102][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3980.573510][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3980.573920][    C3] PKRU: 55555554
[ 3980.574106][    C3] Call Trace:
[ 3980.574283][    C3]  <IRQ>
[ 3980.574435][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 3980.574706][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 3980.574958][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 3980.575243][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 3980.575526][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 3980.575822][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 3980.576096][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 3980.576413][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 3980.576683][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 3980.577004][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 3980.577308][    C3]  </IRQ>
[ 3980.577463][    C3]  <TASK>
[ 3980.577617][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 3980.577944][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3980.578244][ C3] ? kasan_check_range (mm/kasan/generic.c:177 mm/kasan/generic.c:189) 
[ 3980.578509][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 3980.578798][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 3980.579120][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 3980.579426][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3980.579683][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3980.579965][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 3980.580257][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3980.580504][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3980.580754][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 3980.580990][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 3980.581231][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 3980.581481][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3980.581786][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 3980.582049][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3980.582401][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 3980.582678][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 3980.582976][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3980.583283][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 3980.583576][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 3980.583827][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 3980.584087][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 3980.584334][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 3980.584660][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 3980.584956][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 3980.585281][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 3980.585595][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 3980.585850][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 3980.586101][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 3980.586353][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 3980.586670][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 3980.586918][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 3980.587154][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 3980.587487][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 3980.587739][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 3980.588087][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 3980.588415][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 3980.588709][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 3980.589029][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 3980.589286][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 3980.589522][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 3980.589813][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 3980.590073][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 3980.590322][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 3980.590592][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 3980.590853][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 3980.591092][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 3980.591373][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 3980.591616][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 3980.591861][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 3980.592204][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3980.592478][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 3980.592745][ C3] kthread (kernel/kthread.c:388) 
[ 3980.592959][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3980.593201][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 3980.593435][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 3980.593676][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4008.564883][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4008.565373][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4008.565865][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4008.566354][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4008.567327][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4008.567954][    C3] Workqueue: netns cleanup_net
[ 4008.568206][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4008.568543][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 4008.569540][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 4008.569861][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4008.570271][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4008.570681][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4008.571092][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4008.571502][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4008.571914][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4008.572380][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4008.572721][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4008.573133][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4008.573542][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4008.573951][    C3] PKRU: 55555554
[ 4008.574138][    C3] Call Trace:
[ 4008.574316][    C3]  <IRQ>
[ 4008.574468][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4008.574739][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4008.574991][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4008.575277][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4008.575559][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4008.575854][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4008.576126][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4008.576443][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4008.576712][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4008.577032][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4008.577338][    C3]  </IRQ>
[ 4008.577492][    C3]  <TASK>
[ 4008.577646][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4008.577971][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4008.578276][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4008.578579][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4008.578899][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4008.579205][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4008.579464][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4008.579742][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4008.580035][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4008.580281][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4008.580531][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4008.580769][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4008.581006][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4008.581258][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4008.581565][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4008.581828][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4008.582177][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4008.582457][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4008.582756][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4008.583059][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4008.583356][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4008.583604][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4008.583865][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4008.584112][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4008.584439][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4008.584734][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4008.585058][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4008.585375][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4008.585631][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4008.585884][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4008.586135][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4008.586453][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4008.586702][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4008.586942][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4008.587275][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4008.587526][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4008.587876][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4008.588202][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4008.588497][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4008.588819][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4008.589066][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4008.589299][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4008.589594][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4008.589853][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4008.590097][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4008.590367][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4008.590627][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4008.590865][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4008.591145][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4008.591389][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4008.591635][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4008.591977][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4008.592251][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4008.592516][ C3] kthread (kernel/kthread.c:388) 
[ 4008.592729][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4008.592971][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4008.593205][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4008.593445][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4008.593705][    C3]  </TASK>
| [ 4021.112230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4021.112599][    C3] rcu: 3-....: (493472 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=110589
| [ 4021.113169][    C3] rcu: (t=494205 jiffies g=2723341 q=5634 ncpus=4)
[ 4021.113995][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4021.114618][    C3] Workqueue: netns cleanup_net
[ 4021.114871][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 4021.115139][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 4021.116136][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 4021.116452][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 4021.116860][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4021.117270][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4021.117679][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 4021.118088][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 4021.118495][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4021.118952][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4021.119294][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4021.119704][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4021.120112][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4021.120519][    C3] PKRU: 55555554
[ 4021.120706][    C3] Call Trace:
[ 4021.120882][    C3]  <IRQ>
[ 4021.121032][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 4021.121315][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 4021.121573][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 4021.121831][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 4021.122132][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 4021.122367][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 4021.122646][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 4021.122925][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 4021.123189][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 4021.123480][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4021.123728][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 4021.124048][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4021.124327][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4021.124623][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4021.124897][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4021.125209][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4021.125478][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4021.125793][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4021.126099][    C3]  </IRQ>
[ 4021.126252][    C3]  <TASK>
[ 4021.126409][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4021.126736][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4021.127039][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4021.127344][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4021.127580][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4021.127883][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4021.128122][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4021.128412][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4021.128733][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4021.129037][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4021.129293][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4021.129572][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4021.129862][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4021.130107][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4021.130356][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4021.130591][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4021.130831][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4021.131081][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4021.131385][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4021.131646][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4021.131989][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4021.132270][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4021.132566][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4021.132870][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4021.133164][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4021.133414][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4021.133672][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4021.133919][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4021.134244][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4021.134538][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4021.134860][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4021.135173][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4021.135429][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4021.135680][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4021.135930][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4021.136248][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4021.136496][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4021.136732][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4021.137067][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4021.137317][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4021.137667][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4021.137992][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4021.138284][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4021.138605][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4021.138849][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4021.139080][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4021.139372][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4021.139631][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4021.139874][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4021.140142][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4021.140401][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4021.140639][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4021.140919][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4021.141161][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4021.141406][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4021.141748][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4021.142014][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4021.142285][ C3] kthread (kernel/kthread.c:388) 
[ 4021.142497][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4021.142738][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4021.142969][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4021.143210][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4048.564879][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4048.565370][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4048.565860][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4048.566347][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4048.567321][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4048.567948][    C3] Workqueue: netns cleanup_net
[ 4048.568201][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:579) 
[ 4048.568466][ C3] Code: 5c c3 cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	5c                   	pop    %rsp
   1:	c3                   	ret
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	cc                   	int3
   6:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   d:	00 
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	66 0f 1f 00          	nopw   (%rax)
  22:	41 57                	push   %r15
  24:	41 56                	push   %r14
  26:	41 55                	push   %r13
  28:	41 54                	push   %r12
  2a:*	55                   	push   %rbp		<-- trapping instruction
  2b:	53                   	push   %rbx
  2c:	48 83 ec 70          	sub    $0x70,%rsp
  30:	9c                   	pushf
  31:	8f 04 24             	pop    (%rsp)
  34:	0f 01 ca             	clac
  37:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  3e:	1f 00 

Code starting with the faulting instruction
===========================================
   0:	55                   	push   %rbp
   1:	53                   	push   %rbx
   2:	48 83 ec 70          	sub    $0x70,%rsp
   6:	9c                   	pushf
   7:	8f 04 24             	pop    (%rsp)
   a:	0f 01 ca             	clac
   d:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  14:	1f 00 
[ 4048.569459][    C3] RSP: 0018:ffffc9000051f488 EFLAGS: 00000213
[ 4048.569774][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 4048.570181][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4048.570589][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 4048.570999][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4048.571407][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4048.571814][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4048.572278][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4048.572619][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4048.573031][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4048.573444][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4048.573851][    C3] PKRU: 55555554
[ 4048.574038][    C3] Call Trace:
[ 4048.574215][    C3]  <IRQ>
[ 4048.574366][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4048.574637][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4048.574888][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4048.575171][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4048.575454][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4048.575749][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4048.576021][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4048.576337][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4048.576606][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4048.576922][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4048.577224][    C3]  </IRQ>
[ 4048.577379][    C3]  <TASK>
[ 4048.577532][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4048.577858][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4048.578155][ C3] ? kasan_report (mm/kasan/report.c:579) 
[ 4048.578388][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 4048.578644][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4048.578933][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4048.579254][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4048.579559][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4048.579816][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4048.580094][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4048.580388][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4048.580632][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4048.580880][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4048.581118][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4048.581356][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4048.581605][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4048.581918][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4048.582181][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4048.582526][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4048.582801][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4048.583100][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4048.583403][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4048.583699][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4048.583946][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4048.584206][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4048.584454][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4048.584778][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4048.585073][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4048.585399][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4048.585712][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4048.585967][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4048.586218][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4048.586469][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4048.586782][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4048.587029][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4048.587268][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4048.587599][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4048.587848][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4048.588197][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4048.588522][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4048.588812][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4048.589131][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4048.589378][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4048.589609][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4048.589901][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4048.590159][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4048.590402][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4048.590670][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4048.590929][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4048.591166][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4048.591446][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4048.591687][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4048.591939][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4048.592280][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4048.592545][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4048.592810][ C3] kthread (kernel/kthread.c:388) 
[ 4048.593027][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4048.593268][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4048.593501][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4048.593738][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4052.295255][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 525093 jiffies s: 467069 root: 0x8/.
| [ 4052.295925][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4052.296306][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 4052.296589][    C3] NMI backtrace for cpu 3
[ 4052.296598][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4052.296601][    C3] Workqueue: netns cleanup_net
[ 4052.296606][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4052.296612][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 4052.296615][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 4052.296618][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4052.296619][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4052.296621][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4052.296622][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4052.296624][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4052.296625][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4052.296627][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4052.296630][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4052.296632][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4052.296633][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4052.296634][    C3] PKRU: 55555554
[ 4052.296635][    C3] Call Trace:
[ 4052.296637][    C3]  <NMI>
[ 4052.296638][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 4052.296645][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 4052.296649][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 4052.296654][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 4052.296659][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 4052.296661][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 4052.296666][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4052.296670][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4052.296673][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4052.296676][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4052.296679][    C3]  </NMI>
[ 4052.296680][    C3]  <TASK>
[ 4052.296681][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4052.296685][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4052.296690][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4052.296695][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4052.296697][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4052.296700][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4052.296703][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4052.296707][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4052.296710][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4052.296714][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4052.296716][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4052.296721][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4052.296724][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4052.296728][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4052.296731][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4052.296736][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4052.296739][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4052.296744][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4052.296749][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4052.296753][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4052.296755][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4052.296762][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4052.296769][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4052.296774][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4052.296778][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4052.296782][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4052.296786][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4052.296790][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4052.296797][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4052.296801][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4052.296805][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4052.296809][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4052.296812][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4052.296815][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4052.296819][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4052.296822][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4052.296825][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4052.296828][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4052.296830][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4052.296833][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4052.296836][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4052.296838][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4052.296842][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4052.296847][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4052.296850][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4052.296854][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4052.296858][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4052.296861][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4052.296864][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4052.296867][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4052.296869][ C3] kthread (kernel/kthread.c:388) 
[ 4052.296872][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4052.296874][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4052.296877][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4052.296879][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4076.564901][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4076.565394][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4076.565885][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4076.566371][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4076.567344][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4076.567972][    C3] Workqueue: netns cleanup_net
[ 4076.568224][ C3] RIP: 0010:kasan_check_range (./include/linux/kasan.h:61 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 4076.568523][ C3] Code: 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 <48> c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d 59 01 48
All code
========
   0:	5c                   	pop    %rsp
   1:	c3                   	ret
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	cc                   	int3
   6:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
   d:	7f ff ff 
  10:	48 39 c7             	cmp    %rax,%rdi
  13:	76 dd                	jbe    0xfffffffffffffff2
  15:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  1a:	48 89 fd             	mov    %rdi,%rbp
  1d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  24:	fc ff df 
  27:	4d 89 d1             	mov    %r10,%r9
  2a:*	48 c1 ed 03          	shr    $0x3,%rbp		<-- trapping instruction
  2e:	49 c1 e9 03          	shr    $0x3,%r9
  32:	48 01 c5             	add    %rax,%rbp
  35:	49 01 c1             	add    %rax,%r9
  38:	48 89 e8             	mov    %rbp,%rax
  3b:	49 8d 59 01          	lea    0x1(%r9),%rbx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 c1 ed 03          	shr    $0x3,%rbp
   4:	49 c1 e9 03          	shr    $0x3,%r9
   8:	48 01 c5             	add    %rax,%rbp
   b:	49 01 c1             	add    %rax,%r9
   e:	48 89 e8             	mov    %rbp,%rax
  11:	49 8d 59 01          	lea    0x1(%r9),%rbx
  15:	48                   	rex.W
[ 4076.569519][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000216
[ 4076.569835][    C3] RAX: dffffc0000000000 RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 4076.570245][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4076.570654][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffff888022f2b20b
[ 4076.571065][    C3] R10: ffff888022f2b20b R11: 205d313754202020 R12: 0000000000000003
[ 4076.571476][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4076.571896][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4076.572358][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4076.572697][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4076.573109][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4076.573520][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4076.573931][    C3] PKRU: 55555554
[ 4076.574117][    C3] Call Trace:
[ 4076.574296][    C3]  <IRQ>
[ 4076.574448][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4076.574719][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4076.574970][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4076.575256][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4076.575535][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4076.575831][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4076.576106][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4076.576422][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4076.576692][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4076.577011][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4076.577314][    C3]  </IRQ>
[ 4076.577470][    C3]  <TASK>
[ 4076.577623][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4076.577951][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4076.578249][ C3] ? kasan_check_range (./include/linux/kasan.h:61 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 4076.578514][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4076.578804][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4076.579126][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4076.579430][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4076.579687][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4076.579967][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4076.580261][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4076.580506][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4076.580754][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4076.580992][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4076.581232][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4076.581485][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4076.581795][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4076.582057][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4076.582401][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4076.582676][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4076.582974][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4076.583278][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4076.583571][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4076.583821][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4076.584080][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4076.584325][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4076.584648][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4076.584947][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4076.585269][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4076.585580][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4076.585839][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4076.586089][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4076.586342][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4076.586659][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4076.586904][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4076.587144][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4076.587476][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4076.587725][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4076.588073][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4076.588399][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4076.588690][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4076.589009][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4076.589255][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4076.589488][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4076.589779][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4076.590037][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4076.590283][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4076.590552][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4076.590812][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4076.591048][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4076.591332][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4076.591571][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4076.591824][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4076.592165][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4076.592432][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4076.592698][ C3] kthread (kernel/kthread.c:388) 
[ 4076.592913][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4076.593152][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4076.593388][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4076.593629][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4076.593884][    C3]  </TASK>
| [ 4099.147230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4099.147605][    C3] rcu: 3-....: (571393 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=128130
| [ 4099.148176][    C3] rcu: (t=572240 jiffies g=2723341 q=5634 ncpus=4)
[ 4099.149007][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4099.149640][    C3] Workqueue: netns cleanup_net
[ 4099.149893][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4099.150166][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 4099.151160][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 4099.151476][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 4099.151891][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4099.152301][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 4099.152710][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4099.153117][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4099.153529][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4099.153986][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4099.154327][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4099.154737][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4099.155144][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4099.155555][    C3] PKRU: 55555554
[ 4099.155740][    C3] Call Trace:
[ 4099.155914][    C3]  <IRQ>
[ 4099.156068][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 4099.156351][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 4099.156611][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 4099.156867][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 4099.157161][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 4099.157398][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 4099.157675][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 4099.157952][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 4099.158216][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 4099.158508][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4099.158756][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 4099.159076][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4099.159356][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4099.159652][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4099.159924][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4099.160238][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4099.160508][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4099.160826][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4099.161128][    C3]  </IRQ>
[ 4099.161284][    C3]  <TASK>
[ 4099.161437][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4099.161768][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4099.162074][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4099.162315][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 4099.162571][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4099.162860][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4099.163196][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4099.163503][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4099.163759][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4099.164037][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4099.164328][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4099.164573][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4099.164822][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4099.165058][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4099.165295][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4099.165544][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4099.165849][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4099.166111][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4099.166454][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4099.166729][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4099.167025][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4099.167330][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4099.167624][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4099.167873][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4099.168133][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4099.168379][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4099.168704][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4099.168999][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4099.169322][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4099.169634][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4099.169890][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4099.170141][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4099.170394][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4099.170712][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4099.170960][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4099.171197][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4099.171530][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4099.171784][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4099.172135][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4099.172460][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4099.172751][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4099.173070][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4099.173317][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4099.173549][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4099.173841][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4099.174099][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4099.174343][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4099.174611][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4099.174871][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4099.175111][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4099.175392][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4099.175634][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4099.175881][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4099.176222][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4099.176489][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4099.176756][ C3] kthread (kernel/kthread.c:388) 
[ 4099.176969][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4099.177210][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4099.177446][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4099.177687][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4124.564885][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4124.565376][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4124.565866][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4124.566351][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4124.567321][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4124.567947][    C3] Workqueue: netns cleanup_net
[ 4124.568200][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 4124.568469][ C3] Code: 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 44 89 e0 5b <5d> 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb e1 0f 1f 00
All code
========
   0:	7c f5                	jl     0xfffffffffffffff7
   2:	ff                   	(bad)
   3:	ff 48 8d             	decl   -0x73(%rax)
   6:	7c 24                	jl     0x2c
   8:	10 e8                	adc    %ch,%al
   a:	92                   	xchg   %eax,%edx
   b:	fa                   	cli
   c:	ff                   	(bad)
   d:	ff 0f                	decl   (%rdi)
   f:	b6 d3                	mov    $0xd3,%dh
  11:	48 89 ee             	mov    %rbp,%rsi
  14:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  19:	e8 02 fd ff ff       	call   0xfffffffffffffd20
  1e:	ff 34 24             	push   (%rsp)
  21:	9d                   	popf
  22:	48 83 c4 70          	add    $0x70,%rsp
  26:	44 89 e0             	mov    %r12d,%eax
  29:	5b                   	pop    %rbx
  2a:*	5d                   	pop    %rbp		<-- trapping instruction
  2b:	41 5c                	pop    %r12
  2d:	41 5d                	pop    %r13
  2f:	41 5e                	pop    %r14
  31:	41 5f                	pop    %r15
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	45 31 e4             	xor    %r12d,%r12d
  3b:	eb e1                	jmp    0x1e
  3d:	0f 1f 00             	nopl   (%rax)

Code starting with the faulting instruction
===========================================
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	41 5d                	pop    %r13
   5:	41 5e                	pop    %r14
   7:	41 5f                	pop    %r15
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	45 31 e4             	xor    %r12d,%r12d
  11:	eb e1                	jmp    0xfffffffffffffff4
  13:	0f 1f 00             	nopl   (%rax)
[ 4124.569464][    C3] RSP: 0018:ffffc9000051f4a0 EFLAGS: 00000282
[ 4124.569780][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4124.570188][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4124.570606][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4124.571019][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 4124.571427][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 4124.571840][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4124.572299][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4124.572644][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4124.573054][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4124.573462][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4124.573870][    C3] PKRU: 55555554
[ 4124.574057][    C3] Call Trace:
[ 4124.574234][    C3]  <IRQ>
[ 4124.574387][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4124.574657][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4124.574907][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4124.575191][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4124.575475][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4124.575769][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4124.576041][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4124.576357][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4124.576625][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4124.576944][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4124.577250][    C3]  </IRQ>
[ 4124.577404][    C3]  <TASK>
[ 4124.577557][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4124.577882][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4124.578186][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4124.578490][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4124.578728][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4124.579021][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4124.579342][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4124.579647][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4124.579904][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4124.580183][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4124.580477][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4124.580720][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4124.580969][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4124.581207][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4124.581446][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4124.581700][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4124.582006][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4124.582268][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4124.582613][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4124.582888][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4124.583190][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4124.583492][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4124.583788][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4124.584036][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4124.584296][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4124.584543][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4124.584867][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4124.585164][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4124.585487][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4124.585800][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4124.586056][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4124.586309][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4124.586560][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4124.586875][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4124.587122][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4124.587362][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4124.587695][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4124.587944][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4124.588295][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4124.588621][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4124.588911][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4124.589231][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4124.589478][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4124.589709][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4124.590003][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4124.590266][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4124.590508][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4124.590778][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4124.591037][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4124.591274][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4124.591559][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4124.591803][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4124.592049][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4124.592391][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4124.592657][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4124.592922][ C3] kthread (kernel/kthread.c:388) 
[ 4124.593143][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4124.593385][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4124.593618][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4124.593856][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4150.599255][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 623397 jiffies s: 467069 root: 0x8/.
| [ 4150.599917][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4150.600300][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 4150.600582][    C3] NMI backtrace for cpu 3
[ 4150.600595][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4150.600598][    C3] Workqueue: netns cleanup_net
[ 4150.600606][ C3] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4150.600614][ C3] Code: 0f 1f 44 00 00 49 89 fd 49 89 fc 41 be 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 <be> 04 00 00 00 48 89 ef e8 d0 79 e9 fd 41 0f b6 45 00 41 38 c4 7c
All code
========
   0:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   5:	49 89 fd             	mov    %rdi,%r13
   8:	49 89 fc             	mov    %rdi,%r12
   b:	41 be 01 00 00 00    	mov    $0x1,%r14d
  11:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  18:	fc ff df 
  1b:	49 c1 ed 03          	shr    $0x3,%r13
  1f:	41 83 e4 07          	and    $0x7,%r12d
  23:	49 01 c5             	add    %rax,%r13
  26:	41 83 c4 03          	add    $0x3,%r12d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 d0 79 e9 fd       	call   0xfffffffffde97a07
  37:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  3c:	41 38 c4             	cmp    %al,%r12b
  3f:	7c                   	.byte 0x7c

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 d0 79 e9 fd       	call   0xfffffffffde979dd
   d:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  12:	41 38 c4             	cmp    %al,%r12b
  15:	7c                   	.byte 0x7c
[ 4150.600617][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 4150.600619][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4150.600621][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4150.600623][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4150.600624][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4150.600626][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4150.600627][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4150.600629][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4150.600632][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4150.600633][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4150.600634][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4150.600636][    C3] PKRU: 55555554
[ 4150.600636][    C3] Call Trace:
[ 4150.600640][    C3]  <NMI>
[ 4150.600644][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 4150.600650][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 4150.600655][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 4150.600661][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 4150.600666][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 4150.600669][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 4150.600674][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4150.600677][ C3] ? queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4150.600680][ C3] ? queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4150.600683][ C3] ? queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4150.600687][    C3]  </NMI>
[ 4150.600688][    C3]  <TASK>
[ 4150.600689][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4150.600693][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4150.600697][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4150.600703][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4150.600706][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4150.600709][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4150.600711][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4150.600717][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4150.600720][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4150.600724][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4150.600727][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4150.600733][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4150.600735][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4150.600739][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4150.600742][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4150.600747][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4150.600750][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4150.600756][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4150.600763][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4150.600767][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4150.600771][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4150.600779][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4150.600786][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4150.600791][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4150.600796][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4150.600800][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4150.600804][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4150.600808][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4150.600817][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4150.600821][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4150.600825][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4150.600830][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4150.600834][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4150.600837][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4150.600842][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4150.600845][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4150.600848][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4150.600851][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4150.600854][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4150.600857][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4150.600860][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4150.600862][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4150.600868][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4150.600872][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4150.600875][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4150.600879][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4150.600883][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4150.600886][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4150.600890][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4150.600893][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4150.600895][ C3] kthread (kernel/kthread.c:388) 
[ 4150.600899][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4150.600901][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4150.600904][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4150.600905][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4176.564899][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4176.565404][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4176.565894][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4176.566389][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4176.567360][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4176.567991][    C3] Workqueue: netns cleanup_net
[ 4176.568245][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 4176.568520][ C3] Code: 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 44 89 e0 5b <5d> 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb e1 0f 1f 00
All code
========
   0:	7c f5                	jl     0xfffffffffffffff7
   2:	ff                   	(bad)
   3:	ff 48 8d             	decl   -0x73(%rax)
   6:	7c 24                	jl     0x2c
   8:	10 e8                	adc    %ch,%al
   a:	92                   	xchg   %eax,%edx
   b:	fa                   	cli
   c:	ff                   	(bad)
   d:	ff 0f                	decl   (%rdi)
   f:	b6 d3                	mov    $0xd3,%dh
  11:	48 89 ee             	mov    %rbp,%rsi
  14:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  19:	e8 02 fd ff ff       	call   0xfffffffffffffd20
  1e:	ff 34 24             	push   (%rsp)
  21:	9d                   	popf
  22:	48 83 c4 70          	add    $0x70,%rsp
  26:	44 89 e0             	mov    %r12d,%eax
  29:	5b                   	pop    %rbx
  2a:*	5d                   	pop    %rbp		<-- trapping instruction
  2b:	41 5c                	pop    %r12
  2d:	41 5d                	pop    %r13
  2f:	41 5e                	pop    %r14
  31:	41 5f                	pop    %r15
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	45 31 e4             	xor    %r12d,%r12d
  3b:	eb e1                	jmp    0x1e
  3d:	0f 1f 00             	nopl   (%rax)

Code starting with the faulting instruction
===========================================
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	41 5d                	pop    %r13
   5:	41 5e                	pop    %r14
   7:	41 5f                	pop    %r15
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	45 31 e4             	xor    %r12d,%r12d
  11:	eb e1                	jmp    0xfffffffffffffff4
  13:	0f 1f 00             	nopl   (%rax)
[ 4176.569521][    C3] RSP: 0018:ffffc9000051f480 EFLAGS: 00000286
[ 4176.569836][    C3] RAX: 0000000000000000 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 4176.570244][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4176.570657][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4176.571063][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 4176.571486][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 4176.571893][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4176.572349][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4176.572693][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4176.573103][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4176.573521][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4176.573928][    C3] PKRU: 55555554
[ 4176.574113][    C3] Call Trace:
[ 4176.574289][    C3]  <IRQ>
[ 4176.574446][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4176.574716][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4176.574968][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4176.575250][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4176.575534][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4176.575829][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4176.576102][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4176.576421][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4176.576692][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4176.577010][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4176.577311][    C3]  </IRQ>
[ 4176.577474][    C3]  <TASK>
[ 4176.577629][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4176.577954][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4176.578251][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4176.578554][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4176.578791][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 4176.579049][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4176.579341][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4176.579667][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4176.579971][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4176.580229][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4176.580512][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4176.580806][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4176.581050][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4176.581305][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4176.581549][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4176.581786][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4176.582034][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4176.582346][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4176.582615][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4176.582956][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4176.583231][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4176.583536][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4176.583839][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4176.584134][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4176.584391][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4176.584650][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4176.584893][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4176.585217][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4176.585520][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4176.585841][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4176.586151][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4176.586414][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4176.586665][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4176.586916][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4176.587231][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4176.587487][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4176.587725][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4176.588055][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4176.588308][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4176.588660][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4176.588984][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4176.589276][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4176.589602][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4176.589848][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4176.590081][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4176.590372][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4176.590635][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4176.590889][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4176.591157][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4176.591431][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4176.591667][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4176.591953][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4176.592205][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4176.592461][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4176.592804][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4176.593071][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4176.593339][ C3] kthread (kernel/kthread.c:388) 
[ 4176.593561][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4176.593801][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4176.594036][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4176.594276][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4176.594538][    C3]  </TASK>
| [ 4177.181230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4177.181602][    C3] rcu: 3-....: (649312 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=143853
| [ 4177.182178][    C3] rcu: (t=650274 jiffies g=2723341 q=5637 ncpus=4)
[ 4177.183010][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4177.183647][    C3] Workqueue: netns cleanup_net
[ 4177.183900][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:585) 
[ 4177.184169][ C3] Code: 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 ff ff 41 89 c4 <84> c0 0f 84 9c 00 00 00 e8 ff a7 ba ff 41 81 87 3c 0a 00 00 00 00
All code
========
   0:	4c 8b 3c 25 80 b8 1f 	mov    0x1fb880,%r15
   7:	00 
   8:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   f:	85 c0                	test   %eax,%eax
  11:	0f 85 b7 00 00 00    	jne    0xce
  17:	48 89 fd             	mov    %rdi,%rbp
  1a:	49 89 f6             	mov    %rsi,%r14
  1d:	89 d3                	mov    %edx,%ebx
  1f:	49 89 cd             	mov    %rcx,%r13
  22:	e8 0f f7 ff ff       	call   0xfffffffffffff736
  27:	41 89 c4             	mov    %eax,%r12d
  2a:*	84 c0                	test   %al,%al		<-- trapping instruction
  2c:	0f 84 9c 00 00 00    	je     0xce
  32:	e8 ff a7 ba ff       	call   0xffffffffffbaa836
  37:	41                   	rex.B
  38:	81                   	.byte 0x81
  39:	87 3c 0a             	xchg   %edi,(%rdx,%rcx,1)
  3c:	00 00                	add    %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	84 c0                	test   %al,%al
   2:	0f 84 9c 00 00 00    	je     0xa4
   8:	e8 ff a7 ba ff       	call   0xffffffffffbaa80c
   d:	41                   	rex.B
   e:	81                   	.byte 0x81
   f:	87 3c 0a             	xchg   %edi,(%rdx,%rcx,1)
  12:	00 00                	add    %al,(%rax)
	...
[ 4177.185173][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000247
[ 4177.185496][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 4177.185905][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4177.186314][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4177.186727][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 4177.187137][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 4177.187550][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4177.188008][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4177.188348][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4177.188763][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4177.189175][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4177.189589][    C3] PKRU: 55555554
[ 4177.189775][    C3] Call Trace:
[ 4177.189949][    C3]  <IRQ>
[ 4177.190100][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 4177.190387][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 4177.190647][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 4177.190903][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 4177.191195][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 4177.191446][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 4177.191723][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 4177.191999][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 4177.192263][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 4177.192566][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4177.192816][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 4177.193136][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4177.193423][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4177.193718][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4177.193988][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4177.194303][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4177.194577][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4177.194895][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4177.195200][    C3]  </IRQ>
[ 4177.195355][    C3]  <TASK>
[ 4177.195513][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4177.195837][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4177.196140][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4177.196445][ C3] ? kasan_report (mm/kasan/report.c:585) 
[ 4177.196684][ C3] ? kasan_report (mm/kasan/report.c:585) 
[ 4177.196922][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 4177.197176][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4177.197471][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4177.197790][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4177.198092][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4177.198348][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4177.198632][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4177.198927][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4177.199172][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4177.199424][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4177.199662][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4177.199899][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4177.200145][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4177.200459][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4177.200720][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4177.201059][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4177.201340][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4177.201645][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4177.201948][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4177.202242][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4177.202496][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4177.202755][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4177.202999][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4177.203325][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4177.203629][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4177.203951][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4177.204263][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4177.204526][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4177.204779][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4177.205031][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4177.205347][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4177.205597][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4177.205839][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4177.206167][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4177.206424][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4177.206771][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4177.207096][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4177.207393][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4177.207712][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4177.207961][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4177.208193][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4177.208492][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4177.208750][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4177.208994][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4177.209261][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4177.209526][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4177.209761][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4177.210043][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4177.210283][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4177.210534][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4177.210874][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4177.211140][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4177.211418][ C3] kthread (kernel/kthread.c:388) 
[ 4177.211631][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4177.211870][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4177.212103][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4177.212342][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4204.564895][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4204.565388][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4204.565883][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4204.566366][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4204.567340][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4204.567972][    C3] Workqueue: netns cleanup_net
[ 4204.568223][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:585) 
[ 4204.568496][ C3] Code: 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 ff ff 41 89 c4 <84> c0 0f 84 9c 00 00 00 e8 ff a7 ba ff 41 81 87 3c 0a 00 00 00 00
All code
========
   0:	4c 8b 3c 25 80 b8 1f 	mov    0x1fb880,%r15
   7:	00 
   8:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   f:	85 c0                	test   %eax,%eax
  11:	0f 85 b7 00 00 00    	jne    0xce
  17:	48 89 fd             	mov    %rdi,%rbp
  1a:	49 89 f6             	mov    %rsi,%r14
  1d:	89 d3                	mov    %edx,%ebx
  1f:	49 89 cd             	mov    %rcx,%r13
  22:	e8 0f f7 ff ff       	call   0xfffffffffffff736
  27:	41 89 c4             	mov    %eax,%r12d
  2a:*	84 c0                	test   %al,%al		<-- trapping instruction
  2c:	0f 84 9c 00 00 00    	je     0xce
  32:	e8 ff a7 ba ff       	call   0xffffffffffbaa836
  37:	41                   	rex.B
  38:	81                   	.byte 0x81
  39:	87 3c 0a             	xchg   %edi,(%rdx,%rcx,1)
  3c:	00 00                	add    %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	84 c0                	test   %al,%al
   2:	0f 84 9c 00 00 00    	je     0xa4
   8:	e8 ff a7 ba ff       	call   0xffffffffffbaa80c
   d:	41                   	rex.B
   e:	81                   	.byte 0x81
   f:	87 3c 0a             	xchg   %edi,(%rdx,%rcx,1)
  12:	00 00                	add    %al,(%rax)
	...
[ 4204.569497][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000247
[ 4204.569809][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 4204.570218][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4204.570632][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4204.571040][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 4204.571462][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 4204.571870][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4204.572327][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4204.572672][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4204.573082][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4204.573495][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4204.573906][    C3] PKRU: 55555554
[ 4204.574092][    C3] Call Trace:
[ 4204.574266][    C3]  <IRQ>
[ 4204.574425][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4204.574695][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4204.574945][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4204.575232][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4204.575518][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4204.575813][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4204.576085][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4204.576402][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4204.576669][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4204.576986][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4204.577292][    C3]  </IRQ>
[ 4204.577450][    C3]  <TASK>
[ 4204.577605][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4204.577925][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4204.578223][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4204.578525][ C3] ? kasan_report (mm/kasan/report.c:585) 
[ 4204.578762][ C3] ? kasan_report (mm/kasan/report.c:585) 
[ 4204.579003][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 4204.579260][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4204.579555][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4204.579876][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4204.580180][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4204.580441][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4204.580720][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4204.581011][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4204.581264][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4204.581515][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4204.581751][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4204.581990][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4204.582240][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4204.582552][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4204.582813][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4204.583151][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4204.583435][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4204.583732][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4204.584039][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4204.584332][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4204.584587][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4204.584851][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4204.585097][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4204.585426][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4204.585722][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4204.586045][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4204.586356][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4204.586615][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4204.586868][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4204.587119][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4204.587441][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4204.587687][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4204.587925][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4204.588255][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4204.588512][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4204.588860][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4204.589186][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4204.589485][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4204.589804][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4204.590048][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4204.590283][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4204.590580][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4204.590839][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4204.591084][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4204.591360][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4204.591624][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4204.591861][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4204.592143][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4204.592390][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4204.592634][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4204.592975][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4204.593241][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4204.593516][ C3] kthread (kernel/kthread.c:388) 
[ 4204.593730][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4204.593973][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4204.594206][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4204.594453][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4232.564896][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4232.565390][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4232.565882][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4232.566374][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4232.567352][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4232.567985][    C3] Workqueue: netns cleanup_net
[ 4232.568240][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 4232.568513][ C3] Code: 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	41 57                	push   %r15
  1a:	41 56                	push   %r14
  1c:	41 55                	push   %r13
  1e:	41 54                	push   %r12
  20:	55                   	push   %rbp
  21:	53                   	push   %rbx
  22:	48 83 ec 70          	sub    $0x70,%rsp
  26:	9c                   	pushf
  27:	8f 04 24             	pop    (%rsp)
  2a:*	0f 01 ca             	clac		<-- trapping instruction
  2d:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  34:	1f 00 
  36:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3d:	85 c0                	test   %eax,%eax
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	0f 01 ca             	clac
   3:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   a:	1f 00 
   c:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  13:	85 c0                	test   %eax,%eax
  15:	0f                   	.byte 0xf
[ 4232.569513][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 4232.569830][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4232.570241][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4232.570651][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4232.571084][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4232.571492][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4232.571900][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4232.572357][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4232.572696][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4232.573108][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4232.573517][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4232.573925][    C3] PKRU: 55555554
[ 4232.574111][    C3] Call Trace:
[ 4232.574287][    C3]  <IRQ>
[ 4232.574437][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4232.574705][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4232.574956][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4232.575239][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4232.575520][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4232.575816][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4232.576092][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4232.576407][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4232.576676][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4232.576994][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4232.577295][    C3]  </IRQ>
[ 4232.577452][    C3]  <TASK>
[ 4232.577605][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4232.577930][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4232.578238][ C3] ? kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 4232.578474][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4232.578785][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4232.579022][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4232.579317][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4232.579639][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4232.579942][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4232.580198][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4232.580477][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4232.580774][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4232.581041][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4232.581288][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4232.581525][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4232.581765][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4232.582014][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4232.582320][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4232.582582][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4232.582924][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4232.583200][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4232.583500][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4232.583803][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4232.584097][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4232.584346][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4232.584605][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4232.584849][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4232.585173][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4232.585472][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4232.585794][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4232.586106][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4232.586362][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4232.586614][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4232.586866][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4232.587185][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4232.587431][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4232.587671][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4232.588002][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4232.588253][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4232.588602][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4232.588928][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4232.589221][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4232.589540][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4232.589787][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4232.590020][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4232.590312][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4232.590570][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4232.590815][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4232.591100][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4232.591360][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4232.591597][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4232.591879][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4232.592119][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4232.592367][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4232.592707][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4232.592974][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4232.593242][ C3] kthread (kernel/kthread.c:388) 
[ 4232.593458][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4232.593697][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4232.593932][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4232.594173][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4248.903257][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 721701 jiffies s: 467069 root: 0x8/.
| [ 4248.903921][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4248.904304][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 4248.904588][    C3] NMI backtrace for cpu 3
[ 4248.904597][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4248.904599][    C3] Workqueue: netns cleanup_net
[ 4248.904605][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4248.904611][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 4248.904614][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 4248.904616][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 4248.904618][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4248.904619][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 4248.904621][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4248.904622][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4248.904623][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4248.904625][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4248.904629][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4248.904631][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4248.904632][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4248.904633][    C3] PKRU: 55555554
[ 4248.904635][    C3] Call Trace:
[ 4248.904638][    C3]  <NMI>
[ 4248.904641][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 4248.904647][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 4248.904653][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 4248.904659][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 4248.904663][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 4248.904666][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 4248.904671][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4248.904676][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4248.904679][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4248.904682][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4248.904685][    C3]  </NMI>
[ 4248.904685][    C3]  <TASK>
[ 4248.904689][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 4248.904693][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4248.904697][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4248.904701][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4248.904705][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4248.904710][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4248.904713][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4248.904716][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4248.904718][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4248.904724][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4248.904726][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4248.904730][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4248.904733][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4248.904738][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4248.904741][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4248.904745][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4248.904748][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4248.904753][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4248.904756][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4248.904762][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4248.904768][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4248.904771][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4248.904774][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4248.904782][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4248.904789][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4248.904794][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4248.904799][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4248.904803][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4248.904806][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4248.904810][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4248.904818][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4248.904821][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4248.904825][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4248.904830][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4248.904833][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4248.904836][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4248.904840][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4248.904843][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4248.904847][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4248.904850][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4248.904853][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4248.904855][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4248.904859][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4248.904861][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4248.904866][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4248.904870][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4248.904873][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4248.904877][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4248.904880][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4248.904883][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4248.904887][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4248.904890][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4248.904892][ C3] kthread (kernel/kthread.c:388) 
[ 4248.904894][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4248.904897][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4248.904899][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4248.904901][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4248.904909][    C3]  </TASK>
| [ 4255.216230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4255.216606][    C3] rcu: 3-....: (727230 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=159955
| [ 4255.217177][    C3] rcu: (t=728309 jiffies g=2723341 q=5640 ncpus=4)
[ 4255.218003][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4255.218634][    C3] Workqueue: netns cleanup_net
[ 4255.218891][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 4255.219162][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 4255.220157][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 4255.220475][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 4255.220900][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4255.221308][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4255.221717][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 4255.222126][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 4255.222533][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4255.222991][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4255.223331][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4255.223744][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4255.224153][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4255.224561][    C3] PKRU: 55555554
[ 4255.224747][    C3] Call Trace:
[ 4255.224923][    C3]  <IRQ>
[ 4255.225074][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 4255.225354][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 4255.225613][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 4255.225870][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 4255.226163][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 4255.226403][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 4255.226678][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 4255.226955][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 4255.227218][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 4255.227511][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4255.227760][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 4255.228080][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4255.228359][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4255.228654][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4255.228927][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4255.229239][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4255.229507][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4255.229825][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4255.230130][    C3]  </IRQ>
[ 4255.230284][    C3]  <TASK>
[ 4255.230438][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4255.230759][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4255.231072][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4255.231375][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4255.231611][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4255.231917][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4255.232208][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4255.232529][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4255.232833][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4255.233090][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4255.233368][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4255.233659][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4255.233906][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4255.234154][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4255.234391][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4255.234629][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4255.234877][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4255.235181][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4255.235446][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4255.235787][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4255.236062][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4255.236360][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4255.236662][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4255.236956][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4255.237203][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4255.237462][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4255.237710][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4255.238033][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4255.238327][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4255.238649][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4255.238961][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4255.239217][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4255.239466][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4255.239715][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4255.240030][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4255.240276][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4255.240512][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4255.240842][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4255.241107][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4255.241457][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4255.241781][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4255.242074][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4255.242395][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4255.242641][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4255.242880][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4255.243173][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4255.243435][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4255.243678][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4255.243946][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4255.244206][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4255.244445][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4255.244725][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4255.244966][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4255.245211][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4255.245553][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4255.245821][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4255.246086][ C3] kthread (kernel/kthread.c:388) 
[ 4255.246299][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4255.246540][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4255.246772][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4255.247011][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4280.564890][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4280.565381][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4280.565873][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4280.566361][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4280.567334][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4280.567961][    C3] Workqueue: netns cleanup_net
[ 4280.568214][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4280.568484][ C3] 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
All code
========
   0:	90                   	nop
   1:	66 0f 1f 00          	nopw   (%rax)
   5:	41 57                	push   %r15
   7:	41 56                	push   %r14
   9:	41 55                	push   %r13
   b:	41 54                	push   %r12
   d:	55                   	push   %rbp
   e:	53                   	push   %rbx
   f:	48 83 ec 70          	sub    $0x70,%rsp
  13:	9c                   	pushf
  14:	8f 04 24             	pop    (%rsp)
  17:	0f 01 ca             	clac
  1a:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  21:	1f 00 
  23:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 b7 00 00 00    	jne    0xe9
  32:	48 89 fd             	mov    %rdi,%rbp
  35:	49 89 f6             	mov    %rsi,%r14
  38:	89 d3                	mov    %edx,%ebx
  3a:	49 89 cd             	mov    %rcx,%r13
  3d:	e8                   	.byte 0xe8
  3e:	0f                   	.byte 0xf
  3f:	f7                   	.byte 0xf7

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 b7 00 00 00    	jne    0xbf
   8:	48 89 fd             	mov    %rdi,%rbp
   b:	49 89 f6             	mov    %rsi,%r14
   e:	89 d3                	mov    %edx,%ebx
  10:	49 89 cd             	mov    %rcx,%r13
  13:	e8                   	.byte 0xe8
  14:	0f                   	.byte 0xf
  15:	f7                   	.byte 0xf7
[ 4280.569482][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 4280.569799][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4280.570210][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4280.570621][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4280.571046][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4280.571457][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 4280.571866][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4280.572326][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4280.572666][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4280.573081][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4280.573491][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4280.573899][    C3] PKRU: 55555554
[ 4280.574087][    C3] Call Trace:
[ 4280.574263][    C3]  <IRQ>
[ 4280.574414][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4280.574684][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4280.574935][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4280.575219][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4280.575501][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4280.575797][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4280.576069][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4280.576385][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4280.576653][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4280.576972][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4280.577275][    C3]  </IRQ>
[ 4280.577430][    C3]  <TASK>
[ 4280.577586][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4280.577912][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4280.578215][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4280.578460][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4280.578756][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4280.579077][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4280.579382][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4280.579638][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4280.579917][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4280.580212][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4280.580458][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4280.580705][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4280.580952][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4280.581194][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4280.581442][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4280.581749][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4280.582012][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4280.582356][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4280.582632][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4280.582932][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4280.583235][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4280.583531][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4280.583780][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4280.584039][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4280.584284][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4280.584608][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4280.584907][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4280.585230][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4280.585541][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4280.585797][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4280.586048][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4280.586302][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4280.586623][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4280.586867][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4280.587106][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4280.587436][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4280.587697][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4280.588046][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4280.588373][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4280.588665][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4280.588985][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4280.589232][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4280.589465][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4280.589756][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4280.590015][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4280.590261][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4280.590531][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4280.590796][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4280.591033][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4280.591317][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4280.591558][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4280.591804][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4280.592146][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4280.592413][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4280.592679][ C3] kthread (kernel/kthread.c:388) 
[ 4280.592895][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4280.593135][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4280.593370][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4280.593613][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4308.564888][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4308.565380][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4308.565871][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4308.566356][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4308.567328][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4308.567954][    C3] Workqueue: netns cleanup_net
[ 4308.568207][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 4308.568475][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 4308.569470][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 4308.569786][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 4308.570196][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4308.570617][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4308.571027][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 4308.571436][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 4308.571845][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4308.572305][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4308.572648][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4308.573060][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4308.573469][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4308.573878][    C3] PKRU: 55555554
[ 4308.574064][    C3] Call Trace:
[ 4308.574240][    C3]  <IRQ>
[ 4308.574392][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4308.574660][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4308.574911][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4308.575195][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4308.575477][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4308.575771][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4308.576043][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4308.576357][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4308.576626][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4308.576943][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4308.577247][    C3]  </IRQ>
[ 4308.577400][    C3]  <TASK>
[ 4308.577554][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4308.577876][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4308.578181][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4308.578485][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4308.578723][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4308.579029][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4308.579320][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4308.579642][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4308.579947][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4308.580203][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4308.580483][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4308.580782][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4308.581027][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4308.581276][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4308.581511][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4308.581751][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4308.582000][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4308.582307][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4308.582568][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4308.582910][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4308.583186][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4308.583481][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4308.583793][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4308.584085][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4308.584335][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4308.584596][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4308.584857][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4308.585202][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4308.585498][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4308.585825][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4308.586139][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4308.586395][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4308.586645][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4308.586896][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4308.587212][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4308.587461][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4308.587697][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4308.588028][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4308.588279][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4308.588629][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4308.588954][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4308.589247][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4308.589569][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4308.589814][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4308.590047][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4308.590340][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4308.590604][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4308.590853][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4308.591121][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4308.591382][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4308.591621][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4308.591901][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4308.592143][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4308.592389][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4308.592736][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4308.593003][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4308.593270][ C3] kthread (kernel/kthread.c:388) 
[ 4308.593483][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4308.593725][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4308.593956][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4308.594198][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4308.594454][    C3]  </TASK>
| [ 4333.251231][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4333.251607][    C3] rcu: 3-....: (805174 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=176725
| [ 4333.252182][    C3] rcu: (t=806344 jiffies g=2723341 q=5640 ncpus=4)
[ 4333.253007][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4333.253637][    C3] Workqueue: netns cleanup_net
[ 4333.253891][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 4333.254161][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 4333.255155][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 4333.255472][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 4333.255881][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4333.256290][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4333.256699][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 4333.257109][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 4333.257519][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4333.257976][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4333.258318][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4333.258729][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4333.259140][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4333.259550][    C3] PKRU: 55555554
[ 4333.259737][    C3] Call Trace:
[ 4333.259912][    C3]  <IRQ>
[ 4333.260064][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 4333.260344][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 4333.260624][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 4333.260882][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 4333.261174][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 4333.261413][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 4333.261688][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 4333.261963][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 4333.262226][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 4333.262519][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4333.262768][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 4333.263088][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4333.263369][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4333.263663][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4333.263941][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4333.264257][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4333.264529][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4333.264867][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4333.265171][    C3]  </IRQ>
[ 4333.265325][    C3]  <TASK>
[ 4333.265478][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4333.265801][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4333.266100][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4333.266395][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4333.266636][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 4333.266892][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4333.267179][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4333.267499][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4333.267803][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4333.268058][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4333.268337][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4333.268629][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4333.268873][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4333.269121][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4333.269355][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4333.269594][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4333.269843][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4333.270146][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4333.270407][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4333.270809][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4333.271084][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4333.271383][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4333.271686][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4333.271980][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4333.272228][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4333.272487][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4333.272733][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4333.273057][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4333.273351][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4333.273673][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4333.273989][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4333.274243][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4333.274491][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4333.274742][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4333.275058][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4333.275304][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4333.275539][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4333.275869][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4333.276119][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4333.276468][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4333.276791][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4333.277084][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4333.277403][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4333.277646][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4333.277879][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4333.278168][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4333.278425][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4333.278670][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4333.278936][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4333.279195][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4333.279433][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4333.279712][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4333.279953][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4333.280196][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4333.280560][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4333.280825][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4333.281090][ C3] kthread (kernel/kthread.c:388) 
[ 4333.281302][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4333.281543][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4333.281773][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4333.282013][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4347.207254][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 820005 jiffies s: 467069 root: 0x8/.
| [ 4347.207917][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4347.208298][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 4347.208580][    C3] NMI backtrace for cpu 3
[ 4347.208591][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4347.208593][    C3] Workqueue: netns cleanup_net
[ 4347.208600][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4347.208606][ C3] 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
All code
========
   0:	90                   	nop
   1:	66 0f 1f 00          	nopw   (%rax)
   5:	41 57                	push   %r15
   7:	41 56                	push   %r14
   9:	41 55                	push   %r13
   b:	41 54                	push   %r12
   d:	55                   	push   %rbp
   e:	53                   	push   %rbx
   f:	48 83 ec 70          	sub    $0x70,%rsp
  13:	9c                   	pushf
  14:	8f 04 24             	pop    (%rsp)
  17:	0f 01 ca             	clac
  1a:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  21:	1f 00 
  23:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 b7 00 00 00    	jne    0xe9
  32:	48 89 fd             	mov    %rdi,%rbp
  35:	49 89 f6             	mov    %rsi,%r14
  38:	89 d3                	mov    %edx,%ebx
  3a:	49 89 cd             	mov    %rcx,%r13
  3d:	e8                   	.byte 0xe8
  3e:	0f                   	.byte 0xf
  3f:	f7                   	.byte 0xf7

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 b7 00 00 00    	jne    0xbf
   8:	48 89 fd             	mov    %rdi,%rbp
   b:	49 89 f6             	mov    %rsi,%r14
   e:	89 d3                	mov    %edx,%ebx
  10:	49 89 cd             	mov    %rcx,%r13
  13:	e8                   	.byte 0xe8
  14:	0f                   	.byte 0xf
  15:	f7                   	.byte 0xf7
[ 4347.208608][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 4347.208611][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4347.208613][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4347.208614][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4347.208616][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4347.208617][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 4347.208619][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4347.208621][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4347.208624][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4347.208626][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4347.208627][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4347.208629][    C3] PKRU: 55555554
[ 4347.208630][    C3] Call Trace:
[ 4347.208633][    C3]  <NMI>
[ 4347.208636][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 4347.208641][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 4347.208645][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 4347.208650][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 4347.208655][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 4347.208658][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 4347.208662][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4347.208667][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4347.208670][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4347.208673][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4347.208676][    C3]  </NMI>
[ 4347.208677][    C3]  <TASK>
[ 4347.208678][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4347.208681][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4347.208685][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4347.208688][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4347.208692][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4347.208696][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4347.208701][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4347.208704][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4347.208707][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4347.208710][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4347.208715][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4347.208717][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4347.208721][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4347.208723][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4347.208729][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4347.208731][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4347.208735][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4347.208738][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4347.208743][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4347.208746][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4347.208753][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4347.208759][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4347.208762][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4347.208766][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4347.208773][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4347.208780][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4347.208786][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4347.208790][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4347.208794][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4347.208798][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4347.208802][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4347.208810][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4347.208814][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4347.208818][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4347.208823][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4347.208826][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4347.208829][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4347.208833][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4347.208836][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4347.208840][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4347.208843][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4347.208846][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4347.208848][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4347.208851][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4347.208853][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4347.208858][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4347.208862][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4347.208865][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4347.208869][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4347.208873][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4347.208875][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4347.208879][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4347.208882][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4347.208884][ C3] kthread (kernel/kthread.c:388) 
[ 4347.208887][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4347.208890][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4347.208892][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4347.208894][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4372.564884][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4372.565373][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4372.565862][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4372.566348][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4372.567317][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4372.567943][    C3] Workqueue: netns cleanup_net
[ 4372.568195][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4372.568528][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 4372.569528][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 4372.569843][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4372.570253][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4372.570668][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4372.571080][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4372.571490][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4372.571902][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4372.572363][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4372.572705][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4372.573118][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4372.573526][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4372.573933][    C3] PKRU: 55555554
[ 4372.574120][    C3] Call Trace:
[ 4372.574296][    C3]  <IRQ>
[ 4372.574447][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4372.574716][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4372.574966][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4372.575251][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4372.575532][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4372.575827][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4372.576098][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4372.576413][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4372.576682][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4372.576998][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4372.577302][    C3]  </IRQ>
[ 4372.577456][    C3]  <TASK>
[ 4372.577609][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4372.577932][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4372.578236][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4372.578538][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4372.578859][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4372.579164][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4372.579422][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4372.579701][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4372.579993][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4372.580239][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4372.580493][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4372.580731][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4372.580969][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4372.581219][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4372.581527][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4372.581793][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4372.582134][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4372.582414][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4372.582712][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4372.583013][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4372.583309][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4372.583556][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4372.583815][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4372.584062][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4372.584388][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4372.584683][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4372.585006][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4372.585321][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4372.585576][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4372.585828][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4372.586079][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4372.586395][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4372.586642][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4372.586881][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4372.587212][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4372.587461][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4372.587812][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4372.588141][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4372.588434][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4372.588755][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4372.589002][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4372.589233][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4372.589527][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4372.589785][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4372.590029][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4372.590303][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4372.590562][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4372.590801][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4372.591081][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4372.591324][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4372.591570][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4372.591913][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4372.592179][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4372.592446][ C3] kthread (kernel/kthread.c:388) 
[ 4372.592666][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4372.592907][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4372.593141][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4372.593381][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4400.564886][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4400.565377][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4400.565871][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4400.566356][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4400.567330][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4400.567958][    C3] Workqueue: netns cleanup_net
[ 4400.568211][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4400.568482][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 4400.569485][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 4400.569802][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 4400.570223][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4400.570637][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 4400.571047][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4400.571458][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 4400.571870][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4400.572331][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4400.572675][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4400.573089][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4400.573501][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4400.573914][    C3] PKRU: 55555554
[ 4400.574100][    C3] Call Trace:
[ 4400.574277][    C3]  <IRQ>
[ 4400.574430][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4400.574700][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4400.574952][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4400.575240][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4400.575521][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4400.575817][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4400.576092][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4400.576406][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4400.576676][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4400.576998][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4400.577304][    C3]  </IRQ>
[ 4400.577458][    C3]  <TASK>
[ 4400.577613][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4400.577936][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4400.578237][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4400.578477][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4400.578775][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 4400.579032][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4400.579321][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4400.579645][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4400.579951][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4400.580215][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4400.580496][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4400.580789][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4400.581036][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4400.581286][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4400.581524][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4400.581763][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4400.582014][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4400.582324][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4400.582586][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4400.582930][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4400.583208][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4400.583507][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4400.583813][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4400.584108][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4400.584357][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4400.584617][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4400.584864][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4400.585194][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4400.585490][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4400.585814][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4400.586128][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4400.586386][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4400.586637][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4400.586888][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4400.587207][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4400.587456][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4400.587694][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4400.588025][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4400.588278][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4400.588631][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4400.588957][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4400.589251][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4400.589573][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4400.589822][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4400.590054][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4400.590352][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4400.590611][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4400.590855][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4400.591124][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4400.591386][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4400.591626][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4400.591914][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4400.592158][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4400.592408][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4400.592752][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4400.593020][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4400.593288][ C3] kthread (kernel/kthread.c:388) 
[ 4400.593501][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4400.593743][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4400.593974][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4400.594217][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4400.594474][    C3]  </TASK>
| [ 4411.286229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4411.286601][    C3] rcu: 3-....: (883093 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=193165
| [ 4411.287177][    C3] rcu: (t=884379 jiffies g=2723341 q=5640 ncpus=4)
[ 4411.288008][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4411.288641][    C3] Workqueue: netns cleanup_net
[ 4411.288893][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 4411.289163][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 4411.290165][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 4411.290479][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 4411.290891][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4411.291303][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4411.291713][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 4411.292122][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 4411.292535][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4411.292995][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4411.293338][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4411.293751][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4411.294162][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4411.294575][    C3] PKRU: 55555554
[ 4411.294761][    C3] Call Trace:
[ 4411.294935][    C3]  <IRQ>
[ 4411.295089][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 4411.295370][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 4411.295631][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 4411.295891][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 4411.296185][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 4411.296426][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 4411.296707][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 4411.296999][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 4411.297264][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 4411.297557][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4411.297806][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 4411.298128][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4411.298409][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4411.298706][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4411.298979][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4411.299295][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4411.299565][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4411.299884][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4411.300193][    C3]  </IRQ>
[ 4411.300351][    C3]  <TASK>
[ 4411.300505][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4411.300827][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4411.301127][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4411.301426][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4411.301665][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4411.301969][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4411.302275][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 4411.302532][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4411.302822][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4411.303144][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4411.303450][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4411.303706][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4411.303987][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4411.304281][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4411.304527][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4411.304776][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4411.305013][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4411.305254][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4411.305505][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4411.305809][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4411.306071][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4411.306415][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4411.306693][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4411.306990][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4411.307295][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4411.307589][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4411.307840][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4411.308100][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4411.308347][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4411.308672][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4411.308969][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4411.309294][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4411.309610][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4411.309865][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4411.310121][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4411.310374][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4411.310693][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4411.310941][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4411.311178][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4411.311510][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4411.311762][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4411.312111][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4411.312438][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4411.312733][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4411.313054][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4411.313299][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4411.313534][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4411.313826][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4411.314085][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4411.314333][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4411.314602][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4411.314863][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4411.315103][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4411.315385][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4411.315629][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4411.315873][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4411.316218][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4411.316490][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4411.316755][ C3] kthread (kernel/kthread.c:388) 
[ 4411.316967][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4411.317209][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4411.317441][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4411.317682][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4436.564879][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4436.565367][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4436.565855][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4436.566340][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4436.567310][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4436.567938][    C3] Workqueue: netns cleanup_net
[ 4436.568192][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:88 mm/kasan/generic.c:122 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 4436.568488][ C3] Code: d8 eb 0d 48 83 c0 08 48 39 d0 0f 84 b0 00 00 00 48 83 38 00 74 ed 48 8d 50 08 eb 09 48 83 c0 01 48 39 c2 74 2c 80 38 00 74 f2 <48> 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49
All code
========
   0:	d8 eb                	fsubr  %st(3),%st
   2:	0d 48 83 c0 08       	or     $0x8c08348,%eax
   7:	48 39 d0             	cmp    %rdx,%rax
   a:	0f 84 b0 00 00 00    	je     0xc0
  10:	48 83 38 00          	cmpq   $0x0,(%rax)
  14:	74 ed                	je     0x3
  16:	48 8d 50 08          	lea    0x8(%rax),%rdx
  1a:	eb 09                	jmp    0x25
  1c:	48 83 c0 01          	add    $0x1,%rax
  20:	48 39 c2             	cmp    %rax,%rdx
  23:	74 2c                	je     0x51
  25:	80 38 00             	cmpb   $0x0,(%rax)
  28:	74 f2                	je     0x1c
  2a:*	48 89 c2             	mov    %rax,%rdx		<-- trapping instruction
  2d:	b8 01 00 00 00       	mov    $0x1,%eax
  32:	48 85 d2             	test   %rdx,%rdx
  35:	0f 84 4c ff ff ff    	je     0xffffffffffffff87
  3b:	41 83 e2 07          	and    $0x7,%r10d
  3f:	49                   	rex.WB

Code starting with the faulting instruction
===========================================
   0:	48 89 c2             	mov    %rax,%rdx
   3:	b8 01 00 00 00       	mov    $0x1,%eax
   8:	48 85 d2             	test   %rdx,%rdx
   b:	0f 84 4c ff ff ff    	je     0xffffffffffffff5d
  11:	41 83 e2 07          	and    $0x7,%r10d
  15:	49                   	rex.WB
[ 4436.569487][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000282
[ 4436.569802][    C3] RAX: ffffed10045e5641 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 4436.570218][    C3] RDX: ffffed10045e5642 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4436.570630][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 4436.571038][    C3] R10: ffff888022f2b20b R11: 205d313754202020 R12: 0000000000000003
[ 4436.571447][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4436.571858][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4436.572317][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4436.572660][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4436.573070][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4436.573482][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4436.573894][    C3] PKRU: 55555554
[ 4436.574081][    C3] Call Trace:
[ 4436.574257][    C3]  <IRQ>
[ 4436.574409][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4436.574680][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4436.574934][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4436.575223][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4436.575504][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4436.575801][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4436.576076][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4436.576391][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4436.576660][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4436.576979][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4436.577284][    C3]  </IRQ>
[ 4436.577438][    C3]  <TASK>
[ 4436.577594][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4436.577919][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4436.578217][ C3] ? kasan_check_range (mm/kasan/generic.c:88 mm/kasan/generic.c:122 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 4436.578483][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4436.578771][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4436.579094][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4436.579400][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4436.579658][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4436.579938][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4436.580237][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4436.580484][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4436.580732][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4436.580970][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4436.581208][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4436.581457][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4436.581763][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4436.582027][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4436.582371][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4436.582647][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4436.582945][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4436.583249][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4436.583545][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4436.583794][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4436.584053][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4436.584302][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4436.584627][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4436.584922][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4436.585246][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4436.585561][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4436.585817][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4436.586069][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4436.586320][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4436.586637][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4436.586889][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4436.587127][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4436.587458][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4436.587708][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4436.588059][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4436.588386][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4436.588679][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4436.589001][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4436.589248][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4436.589483][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4436.589775][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4436.590037][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4436.590281][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4436.590550][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4436.590811][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4436.591051][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4436.591332][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4436.591575][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4436.591822][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4436.592164][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4436.592433][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4436.592700][ C3] kthread (kernel/kthread.c:388) 
[ 4436.592913][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4436.593155][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4436.593388][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4436.593628][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4445.511262][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 918309 jiffies s: 467069 root: 0x8/.
| [ 4445.511923][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4445.512305][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 4445.512585][    C3] NMI backtrace for cpu 3
[ 4445.512594][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4445.512597][    C3] Workqueue: netns cleanup_net
[ 4445.512602][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4445.512608][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 4445.512610][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 4445.512613][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4445.512614][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4445.512616][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4445.512617][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4445.512619][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4445.512620][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4445.512622][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4445.512625][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4445.512627][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4445.512628][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4445.512629][    C3] PKRU: 55555554
[ 4445.512630][    C3] Call Trace:
[ 4445.512632][    C3]  <NMI>
[ 4445.512635][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 4445.512640][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 4445.512644][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 4445.512648][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 4445.512652][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 4445.512655][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 4445.512659][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4445.512663][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4445.512666][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4445.512669][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4445.512672][    C3]  </NMI>
[ 4445.512673][    C3]  <TASK>
[ 4445.512674][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4445.512678][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4445.512682][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4445.512687][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4445.512690][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4445.512693][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4445.512695][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4445.512700][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4445.512703][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4445.512707][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4445.512709][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4445.512714][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4445.512717][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4445.512720][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4445.512724][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4445.512728][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4445.512731][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4445.512737][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4445.512742][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4445.512745][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4445.512748][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4445.512755][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4445.512762][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4445.512768][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4445.512772][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4445.512776][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4445.512780][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4445.512784][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4445.512792][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4445.512796][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4445.512799][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4445.512804][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4445.512807][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4445.512810][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4445.512814][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4445.512817][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4445.512821][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4445.512823][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4445.512826][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4445.512829][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4445.512833][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4445.512835][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4445.512839][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4445.512843][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4445.512847][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4445.512851][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4445.512854][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4445.512857][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4445.512861][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4445.512864][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4445.512866][ C3] kthread (kernel/kthread.c:388) 
[ 4445.512868][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4445.512871][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4445.512874][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4445.512875][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4472.564877][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4472.565368][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4472.565856][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4472.566343][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4472.567313][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4472.567941][    C3] Workqueue: netns cleanup_net
[ 4472.568193][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4472.568462][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 4472.569455][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 4472.569772][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 4472.570188][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4472.570596][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 4472.571008][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4472.571417][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4472.571825][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4472.572284][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4472.572623][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4472.573040][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4472.573450][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4472.573859][    C3] PKRU: 55555554
[ 4472.574046][    C3] Call Trace:
[ 4472.574224][    C3]  <IRQ>
[ 4472.574376][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4472.574646][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4472.574896][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4472.575180][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4472.575469][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4472.575766][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4472.576038][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4472.576359][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4472.576641][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4472.576960][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4472.577262][    C3]  </IRQ>
[ 4472.577418][    C3]  <TASK>
[ 4472.577571][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4472.577896][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4472.578193][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4472.578435][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 4472.578691][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4472.578980][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4472.579302][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4472.579606][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4472.579870][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4472.580149][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4472.580441][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4472.580687][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4472.580936][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4472.581172][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4472.581411][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4472.581660][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4472.581965][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4472.582227][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4472.582570][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4472.582845][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4472.583143][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4472.583448][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4472.583743][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4472.583992][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4472.584252][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4472.584498][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4472.584823][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4472.585119][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4472.585444][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4472.585759][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4472.586015][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4472.586267][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4472.586517][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4472.586835][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4472.587083][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4472.587321][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4472.587653][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4472.587902][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4472.588254][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4472.588581][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4472.588873][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4472.589193][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4472.589440][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4472.589672][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4472.589970][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4472.590228][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4472.590472][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4472.590740][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4472.591000][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4472.591239][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4472.591520][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4472.591763][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4472.592009][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4472.592351][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4472.592617][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4472.592883][ C3] kthread (kernel/kthread.c:388) 
[ 4472.593096][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4472.593339][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4472.593571][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4472.593811][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4472.594067][    C3]  </TASK>
| [ 4489.321230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4489.321604][    C3] rcu: 3-....: (961013 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=210064
| [ 4489.322178][    C3] rcu: (t=962414 jiffies g=2723341 q=5640 ncpus=4)
[ 4489.323006][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4489.323639][    C3] Workqueue: netns cleanup_net
[ 4489.323899][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4489.324170][ C3] 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
All code
========
   0:	90                   	nop
   1:	66 0f 1f 00          	nopw   (%rax)
   5:	41 57                	push   %r15
   7:	41 56                	push   %r14
   9:	41 55                	push   %r13
   b:	41 54                	push   %r12
   d:	55                   	push   %rbp
   e:	53                   	push   %rbx
   f:	48 83 ec 70          	sub    $0x70,%rsp
  13:	9c                   	pushf
  14:	8f 04 24             	pop    (%rsp)
  17:	0f 01 ca             	clac
  1a:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  21:	1f 00 
  23:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 b7 00 00 00    	jne    0xe9
  32:	48 89 fd             	mov    %rdi,%rbp
  35:	49 89 f6             	mov    %rsi,%r14
  38:	89 d3                	mov    %edx,%ebx
  3a:	49 89 cd             	mov    %rcx,%r13
  3d:	e8                   	.byte 0xe8
  3e:	0f                   	.byte 0xf
  3f:	f7                   	.byte 0xf7

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 b7 00 00 00    	jne    0xbf
   8:	48 89 fd             	mov    %rdi,%rbp
   b:	49 89 f6             	mov    %rsi,%r14
   e:	89 d3                	mov    %edx,%ebx
  10:	49 89 cd             	mov    %rcx,%r13
  13:	e8                   	.byte 0xe8
  14:	0f                   	.byte 0xf
  15:	f7                   	.byte 0xf7
[ 4489.325173][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 4489.325491][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4489.325902][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4489.326313][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4489.326723][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4489.327135][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 4489.327547][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4489.328007][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4489.328350][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4489.328764][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4489.329176][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4489.329586][    C3] PKRU: 55555554
[ 4489.329777][    C3] Call Trace:
[ 4489.329953][    C3]  <IRQ>
[ 4489.330106][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 4489.330387][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 4489.330647][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 4489.330905][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 4489.331200][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 4489.331437][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 4489.331713][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 4489.331992][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 4489.332256][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 4489.332557][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4489.332807][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 4489.333130][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4489.333421][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4489.333732][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4489.334005][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4489.334319][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4489.334587][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4489.334903][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4489.335209][    C3]  </IRQ>
[ 4489.335363][    C3]  <TASK>
[ 4489.335517][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4489.335839][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4489.336144][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4489.336385][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4489.336679][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4489.336999][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4489.337302][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4489.337557][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4489.337838][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4489.338130][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4489.338376][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4489.338624][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4489.338859][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4489.339099][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4489.339348][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4489.339651][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4489.339918][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4489.340262][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4489.340539][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4489.340836][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4489.341140][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4489.341434][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4489.341684][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4489.341943][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4489.342191][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4489.342514][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4489.342811][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4489.343134][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4489.343447][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4489.343701][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4489.343952][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4489.344203][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4489.344520][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4489.344770][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4489.345006][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4489.345337][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4489.345586][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4489.345935][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4489.346262][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4489.346556][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4489.346876][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4489.347120][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4489.347356][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4489.347647][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4489.347906][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4489.348151][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4489.348420][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4489.348679][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4489.348918][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4489.349199][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4489.349441][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4489.349685][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4489.350031][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4489.350299][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4489.350565][ C3] kthread (kernel/kthread.c:388) 
[ 4489.350779][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4489.351020][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4489.351254][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4489.351494][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4516.564883][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4516.565374][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4516.565867][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4516.566353][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4516.567328][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4516.567958][    C3] Workqueue: netns cleanup_net
[ 4516.568210][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 4516.568510][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 4516.569510][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000286
[ 4516.569834][    C3] RAX: ffff888022f2b20c RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 4516.570246][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4516.570657][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4516.571069][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4516.571482][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4516.571893][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4516.572355][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4516.572695][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4516.573109][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4516.573520][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4516.573931][    C3] PKRU: 55555554
[ 4516.574119][    C3] Call Trace:
[ 4516.574295][    C3]  <IRQ>
[ 4516.574448][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4516.574719][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4516.574972][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4516.575258][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4516.575539][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4516.575838][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4516.576111][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4516.576428][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4516.576701][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4516.577020][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4516.577324][    C3]  </IRQ>
[ 4516.577480][    C3]  <TASK>
[ 4516.577634][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4516.577958][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4516.578256][ C3] ? kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 4516.578521][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4516.578818][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4516.579156][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4516.579476][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4516.579739][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4516.580018][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4516.580314][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4516.580561][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4516.580808][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4516.581046][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4516.581287][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4516.581535][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4516.581843][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4516.582106][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4516.582449][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4516.582725][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4516.583026][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4516.583331][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4516.583626][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4516.583877][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4516.584136][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4516.584381][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4516.584706][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4516.585005][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4516.585330][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4516.585643][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4516.585899][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4516.586150][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4516.586403][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4516.586721][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4516.586967][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4516.587206][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4516.587538][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4516.587790][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4516.588140][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4516.588468][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4516.588761][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4516.589081][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4516.589328][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4516.589562][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4516.589859][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4516.590120][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4516.590367][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4516.590637][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4516.590898][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4516.591135][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4516.591419][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4516.591659][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4516.591906][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4516.592248][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4516.592515][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4516.592782][ C3] kthread (kernel/kthread.c:388) 
[ 4516.592998][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4516.593238][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4516.593473][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4516.593714][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4543.815254][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 1016613 jiffies s: 467069 root: 0x8/.
| [ 4543.815923][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4543.816300][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 4543.816583][    C3] NMI backtrace for cpu 3
[ 4543.816592][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4543.816595][    C3] Workqueue: netns cleanup_net
[ 4543.816601][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4543.816607][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 4543.816610][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 4543.816613][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4543.816614][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4543.816616][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4543.816618][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4543.816619][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 4543.816621][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4543.816622][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4543.816626][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4543.816628][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4543.816629][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4543.816630][    C3] PKRU: 55555554
[ 4543.816631][    C3] Call Trace:
[ 4543.816634][    C3]  <NMI>
[ 4543.816637][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 4543.816642][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 4543.816646][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 4543.816651][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 4543.816655][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 4543.816658][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 4543.816662][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4543.816667][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4543.816669][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4543.816673][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4543.816675][    C3]  </NMI>
[ 4543.816676][    C3]  <TASK>
[ 4543.816678][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4543.816682][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4543.816686][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4543.816690][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4543.816694][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4543.816700][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4543.816702][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4543.816705][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4543.816708][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4543.816712][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4543.816715][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4543.816719][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4543.816721][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4543.816726][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4543.816729][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4543.816733][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4543.816736][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4543.816740][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4543.816743][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4543.816749][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4543.816755][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4543.816759][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4543.816762][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4543.816769][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4543.816776][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4543.816781][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4543.816786][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4543.816790][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4543.816794][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4543.816798][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4543.816806][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4543.816810][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4543.816813][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4543.816819][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4543.816822][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4543.816825][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4543.816829][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4543.816832][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4543.816836][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4543.816839][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4543.816842][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4543.816844][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4543.816848][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4543.816850][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4543.816855][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4543.816859][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4543.816862][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4543.816866][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4543.816870][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4543.816872][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4543.816876][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4543.816879][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4543.816881][ C3] kthread (kernel/kthread.c:388) 
[ 4543.816884][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4543.816886][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4543.816889][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4543.816891][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4543.816898][    C3]  </TASK>
| [ 4567.355230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4567.355604][    C3] rcu: 3-....: (1038963 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=227627
| [ 4567.356182][    C3] rcu: (t=1040448 jiffies g=2723341 q=5640 ncpus=4)
[ 4567.357020][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4567.357651][    C3] Workqueue: netns cleanup_net
[ 4567.357905][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4567.358177][ C3] Code: 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 ff ff 41 89 c4 84 c0 0f
All code
========
   0:	56                   	push   %rsi
   1:	41 55                	push   %r13
   3:	41 54                	push   %r12
   5:	55                   	push   %rbp
   6:	53                   	push   %rbx
   7:	48 83 ec 70          	sub    $0x70,%rsp
   b:	9c                   	pushf
   c:	8f 04 24             	pop    (%rsp)
   f:	0f 01 ca             	clac
  12:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  19:	1f 00 
  1b:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  22:	85 c0                	test   %eax,%eax
  24:	0f 85 b7 00 00 00    	jne    0xe1
  2a:*	48 89 fd             	mov    %rdi,%rbp		<-- trapping instruction
  2d:	49 89 f6             	mov    %rsi,%r14
  30:	89 d3                	mov    %edx,%ebx
  32:	49 89 cd             	mov    %rcx,%r13
  35:	e8 0f f7 ff ff       	call   0xfffffffffffff749
  3a:	41 89 c4             	mov    %eax,%r12d
  3d:	84 c0                	test   %al,%al
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	48 89 fd             	mov    %rdi,%rbp
   3:	49 89 f6             	mov    %rsi,%r14
   6:	89 d3                	mov    %edx,%ebx
   8:	49 89 cd             	mov    %rcx,%r13
   b:	e8 0f f7 ff ff       	call   0xfffffffffffff71f
  10:	41 89 c4             	mov    %eax,%r12d
  13:	84 c0                	test   %al,%al
  15:	0f                   	.byte 0xf
[ 4567.359180][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000246
[ 4567.359500][    C3] RAX: 0000000000000000 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 4567.359914][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4567.360327][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 4567.360742][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4567.361169][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 4567.361603][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4567.362085][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4567.362446][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4567.362879][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4567.363312][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4567.363727][    C3] PKRU: 55555554
[ 4567.363914][    C3] Call Trace:
[ 4567.364088][    C3]  <IRQ>
[ 4567.364243][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 4567.364526][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 4567.364787][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 4567.365046][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 4567.365342][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 4567.365582][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 4567.365861][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 4567.366142][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 4567.366407][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 4567.366702][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4567.366950][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 4567.367273][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4567.367554][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4567.367852][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4567.368126][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4567.368443][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4567.368715][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4567.369034][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4567.369345][    C3]  </IRQ>
[ 4567.369502][    C3]  <TASK>
[ 4567.369657][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4567.369981][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4567.370281][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4567.370524][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 4567.370781][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4567.371071][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4567.371395][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4567.371701][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4567.371960][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4567.372241][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4567.372534][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4567.372782][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4567.373031][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4567.373270][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4567.373510][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4567.373761][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4567.374068][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4567.374332][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4567.374679][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4567.374956][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4567.375257][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4567.375561][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4567.375858][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4567.376107][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4567.376368][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4567.376615][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4567.376941][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4567.377238][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4567.377562][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4567.377878][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4567.378136][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4567.378389][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4567.378640][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4567.378959][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4567.379208][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4567.379452][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4567.379786][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4567.380037][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4567.380392][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4567.380719][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4567.381013][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4567.381337][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4567.381585][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4567.381818][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4567.382113][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4567.382372][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4567.382617][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4567.382890][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4567.383154][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4567.383396][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4567.383678][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4567.383921][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4567.384169][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4567.384515][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4567.384783][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4567.385050][ C3] kthread (kernel/kthread.c:388) 
[ 4567.385265][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4567.385508][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4567.385742][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4567.385983][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4592.564883][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4592.565373][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4592.565867][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4592.566353][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4592.567328][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4592.567956][    C3] Workqueue: netns cleanup_net
[ 4592.568211][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4592.568480][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 4592.569484][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 4592.569802][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4592.570213][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4592.570626][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4592.571036][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4592.571445][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4592.571856][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4592.572317][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4592.572659][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4592.573071][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4592.573481][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4592.573892][    C3] PKRU: 55555554
[ 4592.574077][    C3] Call Trace:
[ 4592.574255][    C3]  <IRQ>
[ 4592.574407][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4592.574678][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4592.574928][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4592.575216][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4592.575500][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4592.575795][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4592.576069][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4592.576385][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4592.576655][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4592.576975][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4592.577281][    C3]  </IRQ>
[ 4592.577435][    C3]  <TASK>
[ 4592.577589][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4592.577914][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4592.578220][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4592.578461][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4592.578760][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4592.579054][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4592.579381][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4592.579688][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4592.579946][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4592.580226][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4592.580521][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4592.580766][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4592.581015][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4592.581255][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4592.581493][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4592.581744][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4592.582051][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4592.582318][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4592.582661][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4592.582935][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4592.583237][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4592.583540][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4592.583836][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4592.584084][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4592.584343][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4592.584590][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4592.584918][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4592.585214][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4592.585538][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4592.585853][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4592.586109][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4592.586362][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4592.586615][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4592.586932][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4592.587182][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4592.587425][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4592.587773][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4592.588035][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4592.588388][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4592.588716][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4592.589008][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4592.589334][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4592.589581][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4592.589813][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4592.590109][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4592.590370][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4592.590616][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4592.590886][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4592.591146][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4592.591385][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4592.591666][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4592.591910][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4592.592157][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4592.592501][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4592.592769][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4592.593036][ C3] kthread (kernel/kthread.c:388) 
[ 4592.593249][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4592.593492][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4592.593727][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4592.593967][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4620.564876][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4620.565365][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4620.565853][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4620.566335][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4620.567302][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4620.567929][    C3] Workqueue: netns cleanup_net
[ 4620.568178][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4620.568447][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 4620.569448][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 4620.569761][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4620.570172][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4620.570583][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4620.570991][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4620.571402][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 4620.571811][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4620.572270][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4620.572611][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4620.573022][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4620.573433][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4620.573842][    C3] PKRU: 55555554
[ 4620.574029][    C3] Call Trace:
[ 4620.574203][    C3]  <IRQ>
[ 4620.574357][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4620.574628][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4620.574879][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4620.575174][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4620.575466][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4620.575774][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4620.576058][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4620.576384][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4620.576654][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4620.576970][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4620.577275][    C3]  </IRQ>
[ 4620.577427][    C3]  <TASK>
[ 4620.577583][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4620.577909][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4620.578210][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4620.578450][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4620.578745][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4620.579038][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4620.579365][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4620.579667][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4620.579923][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4620.580200][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4620.580496][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4620.580741][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4620.580990][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4620.581227][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4620.581466][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4620.581713][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4620.582018][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4620.582281][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4620.582621][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4620.582896][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4620.583196][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4620.583500][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4620.583793][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4620.584042][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4620.584302][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4620.584545][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4620.584869][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4620.585169][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4620.585491][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4620.585802][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4620.586057][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4620.586309][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4620.586561][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4620.586877][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4620.587122][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4620.587362][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4620.587693][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4620.587945][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4620.588294][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4620.588618][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4620.588910][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4620.589235][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4620.589481][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4620.589714][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4620.590005][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4620.590263][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4620.590509][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4620.590780][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4620.591039][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4620.591275][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4620.591557][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4620.591796][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4620.592041][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4620.592382][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4620.592649][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4620.592914][ C3] kthread (kernel/kthread.c:388) 
[ 4620.593130][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4620.593369][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4620.593603][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4620.593844][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4642.119270][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 1114917 jiffies s: 467069 root: 0x8/.
| [ 4642.119946][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4642.120325][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 4642.120611][    C3] NMI backtrace for cpu 3
[ 4642.120621][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4642.120623][    C3] Workqueue: netns cleanup_net
[ 4642.120630][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4642.120636][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 4642.120638][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 4642.120641][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4642.120643][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4642.120644][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4642.120646][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4642.120648][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4642.120649][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4642.120651][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4642.120655][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4642.120656][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4642.120657][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4642.120659][    C3] PKRU: 55555554
[ 4642.120660][    C3] Call Trace:
[ 4642.120662][    C3]  <NMI>
[ 4642.120665][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 4642.120669][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 4642.120673][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 4642.120678][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 4642.120682][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 4642.120684][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 4642.120688][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4642.120692][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4642.120695][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4642.120698][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4642.120701][    C3]  </NMI>
[ 4642.120702][    C3]  <TASK>
[ 4642.120703][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4642.120707][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4642.120711][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4642.120717][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4642.120720][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4642.120723][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4642.120725][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4642.120730][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4642.120733][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4642.120737][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4642.120740][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4642.120745][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4642.120747][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4642.120751][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4642.120754][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4642.120759][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4642.120762][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4642.120768][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4642.120774][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4642.120778][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4642.120781][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4642.120788][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4642.120795][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4642.120800][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4642.120805][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4642.120809][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4642.120813][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4642.120817][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4642.120824][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4642.120828][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4642.120832][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4642.120837][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4642.120840][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4642.120844][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4642.120848][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4642.120851][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4642.120855][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4642.120858][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4642.120861][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4642.120864][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4642.120867][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4642.120869][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4642.120874][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4642.120878][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4642.120882][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4642.120886][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4642.120889][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4642.120892][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4642.120896][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4642.120899][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4642.120901][ C3] kthread (kernel/kthread.c:388) 
[ 4642.120904][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4642.120906][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4642.120909][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4642.120911][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4642.120918][    C3]  </TASK>
| [ 4645.390229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4645.390598][    C3] rcu: 3-....: (1116882 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=244350
| [ 4645.391175][    C3] rcu: (t=1118483 jiffies g=2723341 q=5640 ncpus=4)
[ 4645.392007][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4645.392637][    C3] Workqueue: netns cleanup_net
[ 4645.392891][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 4645.393161][ C3] Code: 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 44 89 e0 5b <5d> 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb e1 0f 1f 00
All code
========
   0:	7c f5                	jl     0xfffffffffffffff7
   2:	ff                   	(bad)
   3:	ff 48 8d             	decl   -0x73(%rax)
   6:	7c 24                	jl     0x2c
   8:	10 e8                	adc    %ch,%al
   a:	92                   	xchg   %eax,%edx
   b:	fa                   	cli
   c:	ff                   	(bad)
   d:	ff 0f                	decl   (%rdi)
   f:	b6 d3                	mov    $0xd3,%dh
  11:	48 89 ee             	mov    %rbp,%rsi
  14:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  19:	e8 02 fd ff ff       	call   0xfffffffffffffd20
  1e:	ff 34 24             	push   (%rsp)
  21:	9d                   	popf
  22:	48 83 c4 70          	add    $0x70,%rsp
  26:	44 89 e0             	mov    %r12d,%eax
  29:	5b                   	pop    %rbx
  2a:*	5d                   	pop    %rbp		<-- trapping instruction
  2b:	41 5c                	pop    %r12
  2d:	41 5d                	pop    %r13
  2f:	41 5e                	pop    %r14
  31:	41 5f                	pop    %r15
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	45 31 e4             	xor    %r12d,%r12d
  3b:	eb e1                	jmp    0x1e
  3d:	0f 1f 00             	nopl   (%rax)

Code starting with the faulting instruction
===========================================
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	41 5d                	pop    %r13
   5:	41 5e                	pop    %r14
   7:	41 5f                	pop    %r15
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	45 31 e4             	xor    %r12d,%r12d
  11:	eb e1                	jmp    0xfffffffffffffff4
  13:	0f 1f 00             	nopl   (%rax)
[ 4645.394156][    C3] RSP: 0018:ffffc9000051f4a0 EFLAGS: 00000282
[ 4645.394476][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4645.394886][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4645.395294][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4645.395703][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 4645.396113][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 4645.396523][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4645.396981][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4645.397322][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4645.397733][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4645.398143][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4645.398551][    C3] PKRU: 55555554
[ 4645.398738][    C3] Call Trace:
[ 4645.398913][    C3]  <IRQ>
[ 4645.399074][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 4645.399356][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 4645.399615][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 4645.399872][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 4645.400165][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 4645.400404][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 4645.400679][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 4645.400955][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 4645.401218][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 4645.401512][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4645.401774][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 4645.402094][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4645.402377][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4645.402681][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4645.402962][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4645.403277][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4645.403544][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4645.403861][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4645.404165][    C3]  </IRQ>
[ 4645.404319][    C3]  <TASK>
[ 4645.404472][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4645.404794][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4645.405099][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4645.405402][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4645.405639][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4645.405931][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4645.406254][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4645.406557][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4645.406814][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4645.407092][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4645.407386][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4645.407629][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4645.407877][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4645.408115][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4645.408351][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4645.408600][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4645.408906][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4645.409171][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4645.409511][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4645.409786][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4645.410085][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4645.410386][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4645.410683][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4645.410930][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4645.411189][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4645.411434][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4645.411758][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4645.412055][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4645.412375][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4645.412689][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4645.412945][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4645.413196][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4645.413448][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4645.413761][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4645.414009][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4645.414247][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4645.414577][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4645.414827][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4645.415177][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4645.415503][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4645.415794][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4645.416115][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4645.416360][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4645.416592][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4645.416884][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4645.417143][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4645.417388][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4645.417657][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4645.417916][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4645.418151][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4645.418432][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4645.418673][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4645.418919][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4645.419263][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4645.419529][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4645.419794][ C3] kthread (kernel/kthread.c:388) 
[ 4645.420007][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4645.420248][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4645.420481][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4645.420719][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4672.564879][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4672.565369][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4672.565864][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4672.566350][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4672.567325][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4672.567952][    C3] Workqueue: netns cleanup_net
[ 4672.568205][ C3] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 4672.568497][ C3] Code: 48 c7 c7 b0 c2 9e a9 5b 5d 41 5c e9 9a b3 9b ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 af ef ff ff 66 66 2e 0f 1f
All code
========
   0:	48 c7 c7 b0 c2 9e a9 	mov    $0xffffffffa99ec2b0,%rdi
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	e9 9a b3 9b ff       	jmp    0xffffffffff9bb3aa
  10:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  17:	00 00 00 
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 af ef ff ff       	jmp    0xffffffffffffefea
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 af ef ff ff       	jmp    0xffffffffffffefc0
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 4672.569499][    C3] RSP: 0018:ffffc9000051f4c8 EFLAGS: 00000206
[ 4672.569815][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4672.570227][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4672.570637][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4672.571046][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4672.571459][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4672.571870][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4672.572330][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4672.572671][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4672.573082][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4672.573495][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4672.573905][    C3] PKRU: 55555554
[ 4672.574092][    C3] Call Trace:
[ 4672.574266][    C3]  <IRQ>
[ 4672.574420][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4672.574690][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4672.574942][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4672.575226][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4672.575507][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4672.575804][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4672.576077][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4672.576392][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4672.576662][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4672.576981][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4672.577287][    C3]  </IRQ>
[ 4672.577441][    C3]  <TASK>
[ 4672.577597][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4672.577924][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4672.578239][ C3] ? __pfx___kasan_check_read (mm/kasan/shadow.c:30) 
[ 4672.578541][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4672.578847][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4672.579182][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4672.579502][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4672.579767][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4672.580061][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4672.580362][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4672.580609][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4672.580858][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4672.581094][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4672.581336][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4672.581587][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4672.581891][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4672.582153][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4672.582499][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4672.582776][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4672.583074][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4672.583381][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4672.583675][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4672.583925][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4672.584186][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4672.584433][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4672.584759][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4672.585056][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4672.585384][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4672.585698][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4672.585953][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4672.586204][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4672.586457][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4672.586776][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4672.587025][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4672.587262][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4672.587594][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4672.587847][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4672.588197][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4672.588524][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4672.588821][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4672.589144][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4672.589390][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4672.589624][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4672.589918][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4672.590176][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4672.590425][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4672.590694][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4672.590956][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4672.591198][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4672.591481][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4672.591729][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4672.591973][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4672.592317][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4672.592586][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4672.592854][ C3] kthread (kernel/kthread.c:388) 
[ 4672.593067][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4672.593310][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4672.593542][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4672.593785][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4700.564881][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4700.565375][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4700.565868][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4700.566355][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4700.567329][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4700.567963][    C3] Workqueue: netns cleanup_net
[ 4700.568217][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4700.568553][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 4700.569556][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 4700.569872][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4700.570284][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4700.570693][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4700.571104][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4700.571519][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4700.571928][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4700.572388][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4700.572730][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4700.573142][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4700.573555][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4700.573964][    C3] PKRU: 55555554
[ 4700.574151][    C3] Call Trace:
[ 4700.574328][    C3]  <IRQ>
[ 4700.574480][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4700.574751][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4700.575002][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4700.575286][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4700.575566][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4700.575865][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4700.576137][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4700.576455][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4700.576724][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4700.577042][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4700.577346][    C3]  </IRQ>
[ 4700.577502][    C3]  <TASK>
[ 4700.577656][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4700.577982][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4700.578287][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4700.578591][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4700.578916][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4700.579221][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4700.579483][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4700.579763][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4700.580056][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4700.580303][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4700.580552][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4700.580788][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4700.581029][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4700.581282][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4700.581587][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4700.581849][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4700.582192][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4700.582473][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4700.582770][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4700.583076][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4700.583371][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4700.583621][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4700.583880][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4700.584127][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4700.584452][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4700.584749][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4700.585072][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4700.585386][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4700.585640][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4700.585891][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4700.586144][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4700.586461][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4700.586709][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4700.586946][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4700.587278][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4700.587530][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4700.587878][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4700.588204][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4700.588499][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4700.588825][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4700.589070][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4700.589307][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4700.589598][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4700.589858][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4700.590104][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4700.590374][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4700.590634][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4700.590873][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4700.591154][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4700.591398][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4700.591642][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4700.591987][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4700.592255][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4700.592523][ C3] kthread (kernel/kthread.c:388) 
[ 4700.592737][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4700.592980][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4700.593213][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4700.593456][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4700.593712][    C3]  </TASK>
| [ 4723.424230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4723.424600][    C3] rcu: 3-....: (1194827 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=262573
| [ 4723.425178][    C3] rcu: (t=1196517 jiffies g=2723341 q=5640 ncpus=4)
[ 4723.426012][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4723.426639][    C3] Workqueue: netns cleanup_net
[ 4723.426894][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 4723.427164][ C3] Code: 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 <44> 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb
All code
========
   0:	6c                   	insb   (%dx),%es:(%rdi)
   1:	24 30                	and    $0x30,%al
   3:	e8 7c f5 ff ff       	call   0xfffffffffffff584
   8:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
   d:	e8 92 fa ff ff       	call   0xfffffffffffffaa4
  12:	0f b6 d3             	movzbl %bl,%edx
  15:	48 89 ee             	mov    %rbp,%rsi
  18:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  1d:	e8 02 fd ff ff       	call   0xfffffffffffffd24
  22:	ff 34 24             	push   (%rsp)
  25:	9d                   	popf
  26:	48 83 c4 70          	add    $0x70,%rsp
  2a:*	44 89 e0             	mov    %r12d,%eax		<-- trapping instruction
  2d:	5b                   	pop    %rbx
  2e:	5d                   	pop    %rbp
  2f:	41 5c                	pop    %r12
  31:	41 5d                	pop    %r13
  33:	41 5e                	pop    %r14
  35:	41 5f                	pop    %r15
  37:	c3                   	ret
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	cc                   	int3
  3c:	45 31 e4             	xor    %r12d,%r12d
  3f:	eb                   	.byte 0xeb

Code starting with the faulting instruction
===========================================
   0:	44 89 e0             	mov    %r12d,%eax
   3:	5b                   	pop    %rbx
   4:	5d                   	pop    %rbp
   5:	41 5c                	pop    %r12
   7:	41 5d                	pop    %r13
   9:	41 5e                	pop    %r14
   b:	41 5f                	pop    %r15
   d:	c3                   	ret
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	cc                   	int3
  12:	45 31 e4             	xor    %r12d,%r12d
  15:	eb                   	.byte 0xeb
[ 4723.428163][    C3] RSP: 0018:ffffc9000051f498 EFLAGS: 00000282
[ 4723.428481][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 4723.428896][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4723.429309][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4723.429720][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 4723.430129][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 4723.430538][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4723.430998][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4723.431344][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4723.431757][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4723.432179][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4723.432593][    C3] PKRU: 55555554
[ 4723.432787][    C3] Call Trace:
[ 4723.432972][    C3]  <IRQ>
[ 4723.433130][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 4723.433422][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 4723.433692][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 4723.433958][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 4723.434268][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 4723.434513][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 4723.434802][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 4723.435090][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 4723.435365][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 4723.435667][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4723.435926][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 4723.436262][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4723.436555][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4723.436863][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4723.437147][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4723.437462][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4723.437733][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4723.438050][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4723.438358][    C3]  </IRQ>
[ 4723.438512][    C3]  <TASK>
[ 4723.438672][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4723.438998][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4723.439304][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4723.439610][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4723.439849][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4723.440143][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4723.440467][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4723.440771][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4723.441028][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4723.441311][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4723.441602][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4723.441850][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4723.442099][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4723.442337][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4723.442577][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4723.442828][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4723.443132][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4723.443397][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4723.443741][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4723.444019][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4723.444319][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4723.444625][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4723.444919][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4723.445170][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4723.445431][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4723.445679][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4723.446005][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4723.446304][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4723.446628][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4723.446943][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4723.447198][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4723.447449][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4723.447702][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4723.448020][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4723.448268][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4723.448506][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4723.448842][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4723.449093][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4723.449443][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4723.449771][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4723.450065][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4723.450386][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4723.450631][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4723.450866][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4723.451157][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4723.451418][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4723.451664][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4723.451934][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4723.452196][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4723.452437][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4723.452719][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4723.452962][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4723.453207][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4723.453553][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4723.453821][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4723.454089][ C3] kthread (kernel/kthread.c:388) 
[ 4723.454303][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4723.454546][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4723.454778][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4723.455021][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4740.423256][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 1213221 jiffies s: 467069 root: 0x8/.
| [ 4740.423924][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4740.424301][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 4740.424587][    C3] NMI backtrace for cpu 3
[ 4740.424596][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4740.424598][    C3] Workqueue: netns cleanup_net
[ 4740.424604][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 4740.424610][ C3] Code: 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e <41> 5f c3 cc cc cc cc 45 31 e4 eb e1 0f 1f 00 90 90 90 90 90 90 90
All code
========
   0:	24 10                	and    $0x10,%al
   2:	e8 92 fa ff ff       	call   0xfffffffffffffa99
   7:	0f b6 d3             	movzbl %bl,%edx
   a:	48 89 ee             	mov    %rbp,%rsi
   d:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  12:	e8 02 fd ff ff       	call   0xfffffffffffffd19
  17:	ff 34 24             	push   (%rsp)
  1a:	9d                   	popf
  1b:	48 83 c4 70          	add    $0x70,%rsp
  1f:	44 89 e0             	mov    %r12d,%eax
  22:	5b                   	pop    %rbx
  23:	5d                   	pop    %rbp
  24:	41 5c                	pop    %r12
  26:	41 5d                	pop    %r13
  28:	41 5e                	pop    %r14
  2a:*	41 5f                	pop    %r15		<-- trapping instruction
  2c:	c3                   	ret
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	45 31 e4             	xor    %r12d,%r12d
  34:	eb e1                	jmp    0x17
  36:	0f 1f 00             	nopl   (%rax)
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	41 5f                	pop    %r15
   2:	c3                   	ret
   3:	cc                   	int3
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	45 31 e4             	xor    %r12d,%r12d
   a:	eb e1                	jmp    0xffffffffffffffed
   c:	0f 1f 00             	nopl   (%rax)
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 4740.424612][    C3] RSP: 0018:ffffc9000051f4a0 EFLAGS: 00000286
[ 4740.424614][    C3] RAX: 0000000000000000 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 4740.424616][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4740.424618][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 4740.424619][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4740.424621][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 4740.424622][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4740.424624][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4740.424627][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4740.424629][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4740.424630][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4740.424631][    C3] PKRU: 55555554
[ 4740.424632][    C3] Call Trace:
[ 4740.424634][    C3]  <NMI>
[ 4740.424637][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 4740.424643][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 4740.424646][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 4740.424651][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 4740.424655][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 4740.424658][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 4740.424662][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4740.424667][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4740.424669][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4740.424673][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4740.424675][    C3]  </NMI>
[ 4740.424676][    C3]  <TASK>
[ 4740.424677][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 4740.424682][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4740.424685][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4740.424689][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4740.424694][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4740.424699][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4740.424701][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4740.424704][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4740.424707][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4740.424712][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4740.424715][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4740.424719][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4740.424721][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4740.424726][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4740.424729][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4740.424733][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4740.424736][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4740.424741][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4740.424744][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4740.424750][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4740.424755][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4740.424758][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4740.424761][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4740.424768][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4740.424775][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4740.424780][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4740.424785][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4740.424789][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4740.424793][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4740.424797][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4740.424804][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4740.424808][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4740.424812][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4740.424817][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4740.424820][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4740.424823][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4740.424828][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4740.424830][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4740.424834][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4740.424837][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4740.424840][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4740.424843][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4740.424846][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4740.424848][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4740.424853][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4740.424857][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4740.424860][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4740.424864][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4740.424867][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4740.424870][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4740.424874][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4740.424877][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4740.424879][ C3] kthread (kernel/kthread.c:388) 
[ 4740.424881][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4740.424884][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4740.424886][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4740.424888][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4764.564884][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4764.565379][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4764.565871][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4764.566359][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4764.567332][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4764.567965][    C3] Workqueue: netns cleanup_net
[ 4764.568219][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4764.568558][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 4764.569555][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 4764.569871][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4764.570282][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4764.570691][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4764.571100][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4764.571512][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4764.571921][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4764.572380][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4764.572720][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4764.573130][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4764.573542][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4764.573951][    C3] PKRU: 55555554
[ 4764.574138][    C3] Call Trace:
[ 4764.574313][    C3]  <IRQ>
[ 4764.574466][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4764.574737][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4764.574988][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4764.575273][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4764.575553][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4764.575850][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4764.576123][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4764.576438][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4764.576708][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4764.577025][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4764.577330][    C3]  </IRQ>
[ 4764.577484][    C3]  <TASK>
[ 4764.577639][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4764.577964][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4764.578268][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4764.578578][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4764.578901][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4764.579204][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4764.579461][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4764.579743][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4764.580035][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4764.580282][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4764.580530][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4764.580767][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4764.581007][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4764.581257][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4764.581562][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4764.581824][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4764.582166][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4764.582448][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4764.582746][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4764.583050][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4764.583345][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4764.583595][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4764.583855][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4764.584102][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4764.584426][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4764.584724][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4764.585049][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4764.585361][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4764.585615][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4764.585867][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4764.586119][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4764.586437][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4764.586684][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4764.586922][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4764.587254][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4764.587505][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4764.587853][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4764.588181][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4764.588482][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4764.588803][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4764.589048][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4764.589284][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4764.589575][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4764.589834][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4764.590080][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4764.590350][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4764.590611][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4764.590850][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4764.591131][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4764.591375][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4764.591620][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4764.591966][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4764.592237][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4764.592509][ C3] kthread (kernel/kthread.c:388) 
[ 4764.592730][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4764.592976][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4764.593209][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4764.593452][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4792.564883][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4792.565372][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4792.565864][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4792.566351][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4792.567324][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4792.567951][    C3] Workqueue: netns cleanup_net
[ 4792.568204][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4792.568542][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 4792.569538][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 4792.569855][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4792.570265][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4792.570675][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4792.571084][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4792.571494][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4792.571903][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4792.572363][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4792.572705][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4792.573116][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4792.573524][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4792.573935][    C3] PKRU: 55555554
[ 4792.574122][    C3] Call Trace:
[ 4792.574299][    C3]  <IRQ>
[ 4792.574450][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4792.574721][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4792.574972][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4792.575259][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4792.575540][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4792.575834][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4792.576107][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4792.576422][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4792.576691][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4792.577010][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4792.577315][    C3]  </IRQ>
[ 4792.577469][    C3]  <TASK>
[ 4792.577624][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4792.577947][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4792.578257][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4792.578562][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4792.578882][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4792.579187][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4792.579445][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4792.579724][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4792.580018][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4792.580262][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4792.580510][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4792.580749][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4792.580985][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4792.581235][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4792.581542][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4792.581804][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4792.582146][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4792.582426][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4792.582725][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4792.583026][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4792.583323][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4792.583571][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4792.583830][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4792.584075][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4792.584399][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4792.584695][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4792.585015][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4792.585328][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4792.585585][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4792.585837][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4792.586089][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4792.586403][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4792.586651][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4792.586890][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4792.587221][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4792.587474][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4792.587823][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4792.588149][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4792.588444][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4792.588764][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4792.589011][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4792.589244][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4792.589537][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4792.589795][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4792.590040][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4792.590309][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4792.590569][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4792.590805][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4792.591087][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4792.591330][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4792.591576][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4792.591917][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4792.592183][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4792.592449][ C3] kthread (kernel/kthread.c:388) 
[ 4792.592664][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4792.592904][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4792.593138][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4792.593387][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4792.593643][    C3]  </TASK>
| [ 4801.459229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4801.459598][    C3] rcu: 3-....: (1272747 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=279442
| [ 4801.460176][    C3] rcu: (t=1274552 jiffies g=2723341 q=5640 ncpus=4)
[ 4801.461013][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4801.461641][    C3] Workqueue: netns cleanup_net
[ 4801.461898][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4801.462168][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 4801.463172][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 4801.463491][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 4801.463903][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4801.464315][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 4801.464725][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4801.465135][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4801.465546][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4801.466010][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4801.466354][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4801.466766][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4801.467176][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4801.467586][    C3] PKRU: 55555554
[ 4801.467772][    C3] Call Trace:
[ 4801.467957][    C3]  <IRQ>
[ 4801.468109][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 4801.468400][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 4801.468661][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 4801.468917][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 4801.469214][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 4801.469452][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 4801.469730][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 4801.470008][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 4801.470274][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 4801.470565][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4801.470816][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 4801.471139][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4801.471419][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4801.471718][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4801.471991][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4801.472307][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4801.472576][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4801.472896][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4801.473201][    C3]  </IRQ>
[ 4801.473357][    C3]  <TASK>
[ 4801.473512][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4801.473838][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4801.474135][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4801.474380][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 4801.474637][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4801.474925][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4801.475248][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4801.475555][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4801.475812][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4801.476093][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4801.476386][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4801.476633][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4801.476883][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4801.477119][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4801.477360][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4801.477611][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4801.477915][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4801.478184][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4801.478532][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4801.478808][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4801.479106][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4801.479412][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4801.479706][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4801.479956][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4801.480215][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4801.480462][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4801.480788][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4801.481084][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4801.481407][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4801.481722][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4801.481977][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4801.482227][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4801.482479][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4801.482797][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4801.483045][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4801.483282][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4801.483613][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4801.483865][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4801.484215][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4801.484542][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4801.484835][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4801.485160][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4801.485407][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4801.485640][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4801.485943][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4801.486201][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4801.486447][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4801.486714][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4801.486977][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4801.487217][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4801.487501][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4801.487751][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4801.488003][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4801.488360][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4801.488639][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4801.488914][ C3] kthread (kernel/kthread.c:388) 
[ 4801.489132][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4801.489382][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4801.489622][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4801.489870][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4828.564888][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4828.565379][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4828.565869][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4828.566356][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4828.567327][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4828.567955][    C3] Workqueue: netns cleanup_net
[ 4828.568216][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4828.568486][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 4828.569483][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 4828.569800][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 4828.570212][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4828.570625][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 4828.571039][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4828.571451][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 4828.571867][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4828.572330][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4828.572672][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4828.573089][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4828.573501][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4828.573914][    C3] PKRU: 55555554
[ 4828.574105][    C3] Call Trace:
[ 4828.574282][    C3]  <IRQ>
[ 4828.574434][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4828.574704][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4828.574956][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4828.575241][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4828.575524][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4828.575821][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4828.576094][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4828.576410][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4828.576680][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4828.577000][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4828.577305][    C3]  </IRQ>
[ 4828.577460][    C3]  <TASK>
[ 4828.577614][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4828.577940][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4828.578246][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 4828.578487][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 4828.578743][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4828.579034][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4828.579357][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4828.579664][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4828.579921][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4828.580200][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4828.580494][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4828.580740][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4828.580991][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4828.581230][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4828.581468][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4828.581720][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4828.582027][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4828.582295][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4828.582640][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4828.582921][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4828.583228][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4828.583540][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4828.583841][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4828.584094][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4828.584363][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4828.584616][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4828.584951][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4828.585257][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4828.585587][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4828.585910][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4828.586177][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4828.586438][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4828.586699][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4828.587017][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4828.587266][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4828.587506][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4828.587839][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4828.588093][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4828.588447][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4828.588775][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4828.589068][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4828.589391][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4828.589642][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4828.589874][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4828.590172][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4828.590433][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4828.590678][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4828.590950][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4828.591211][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4828.591450][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4828.591732][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4828.591977][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4828.592224][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4828.592567][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4828.592836][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4828.593103][ C3] kthread (kernel/kthread.c:388) 
[ 4828.593318][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4828.593561][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4828.593796][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4828.594036][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4838.727257][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 1311525 jiffies s: 467069 root: 0x8/.
| [ 4838.727926][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4838.728316][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 4838.728601][    C3] NMI backtrace for cpu 3
[ 4838.728610][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4838.728612][    C3] Workqueue: netns cleanup_net
[ 4838.728618][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4838.728624][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 4838.728627][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 4838.728629][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4838.728631][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4838.728632][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4838.728634][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4838.728635][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4838.728637][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4838.728639][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4838.728643][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4838.728645][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4838.728646][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4838.728647][    C3] PKRU: 55555554
[ 4838.728648][    C3] Call Trace:
[ 4838.728650][    C3]  <NMI>
[ 4838.728652][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 4838.728657][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 4838.728662][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 4838.728666][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 4838.728670][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 4838.728672][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 4838.728676][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4838.728680][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4838.728683][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4838.728686][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4838.728690][    C3]  </NMI>
[ 4838.728690][    C3]  <TASK>
[ 4838.728691][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4838.728695][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4838.728700][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4838.728705][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4838.728708][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4838.728711][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4838.728713][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4838.728717][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4838.728720][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4838.728724][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4838.728726][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4838.728732][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4838.728734][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4838.728738][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4838.728741][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4838.728746][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4838.728749][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4838.728755][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4838.728761][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4838.728764][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4838.728767][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4838.728774][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4838.728781][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4838.728787][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4838.728791][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4838.728796][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4838.728799][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4838.728803][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4838.728810][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4838.728815][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4838.728818][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4838.728823][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4838.728826][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4838.728829][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4838.728834][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4838.728837][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4838.728840][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4838.728843][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4838.728846][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4838.728849][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4838.728852][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4838.728854][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4838.728858][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4838.728863][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4838.728865][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4838.728870][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4838.728873][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4838.728876][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4838.728880][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4838.728883][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4838.728885][ C3] kthread (kernel/kthread.c:388) 
[ 4838.728887][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4838.728890][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4838.728893][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4838.728894][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4864.564888][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4864.565383][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4864.565873][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4864.566359][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4864.567333][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4864.567970][    C3] Workqueue: netns cleanup_net
[ 4864.568223][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 4864.568495][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 4864.569496][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 4864.569813][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 4864.570224][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4864.570635][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4864.571045][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 4864.571457][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 4864.571868][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4864.572329][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4864.572671][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4864.573081][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4864.573496][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4864.573905][    C3] PKRU: 55555554
[ 4864.574093][    C3] Call Trace:
[ 4864.574269][    C3]  <IRQ>
[ 4864.574432][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4864.574704][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4864.574956][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4864.575240][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4864.575520][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4864.575819][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4864.576091][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4864.576407][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4864.576678][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4864.576995][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4864.577298][    C3]  </IRQ>
[ 4864.577453][    C3]  <TASK>
[ 4864.577609][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4864.577938][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4864.578242][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4864.578547][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4864.578788][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4864.579092][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4864.579390][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4864.579712][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4864.580016][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4864.580275][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4864.580555][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4864.580852][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4864.581096][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4864.581345][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4864.581583][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4864.581822][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4864.582071][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4864.582382][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4864.582646][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4864.582990][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4864.583268][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4864.583570][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4864.583874][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4864.584172][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4864.584425][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4864.584687][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4864.584933][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4864.585261][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4864.585562][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4864.585887][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4864.586203][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4864.586463][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4864.586718][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4864.586972][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4864.587293][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4864.587541][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4864.587783][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4864.588122][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4864.588377][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4864.588730][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4864.589058][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4864.589350][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4864.589672][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4864.589920][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4864.590155][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4864.590447][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4864.590708][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4864.590954][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4864.591225][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4864.591487][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4864.591724][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4864.592008][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4864.592251][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4864.592499][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4864.592843][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4864.593110][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4864.593377][ C3] kthread (kernel/kthread.c:388) 
[ 4864.593593][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4864.593833][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4864.594067][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4864.594310][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4864.594564][    C3]  </TASK>
| [ 4879.494229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4879.494599][    C3] rcu: 3-....: (1350666 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=296371
| [ 4879.495177][    C3] rcu: (t=1352587 jiffies g=2723341 q=5640 ncpus=4)
[ 4879.496012][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4879.496641][    C3] Workqueue: netns cleanup_net
[ 4879.496896][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 4879.497165][ C3] Code: 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 44 89 e0 5b <5d> 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb e1 0f 1f 00
All code
========
   0:	7c f5                	jl     0xfffffffffffffff7
   2:	ff                   	(bad)
   3:	ff 48 8d             	decl   -0x73(%rax)
   6:	7c 24                	jl     0x2c
   8:	10 e8                	adc    %ch,%al
   a:	92                   	xchg   %eax,%edx
   b:	fa                   	cli
   c:	ff                   	(bad)
   d:	ff 0f                	decl   (%rdi)
   f:	b6 d3                	mov    $0xd3,%dh
  11:	48 89 ee             	mov    %rbp,%rsi
  14:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  19:	e8 02 fd ff ff       	call   0xfffffffffffffd20
  1e:	ff 34 24             	push   (%rsp)
  21:	9d                   	popf
  22:	48 83 c4 70          	add    $0x70,%rsp
  26:	44 89 e0             	mov    %r12d,%eax
  29:	5b                   	pop    %rbx
  2a:*	5d                   	pop    %rbp		<-- trapping instruction
  2b:	41 5c                	pop    %r12
  2d:	41 5d                	pop    %r13
  2f:	41 5e                	pop    %r14
  31:	41 5f                	pop    %r15
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	45 31 e4             	xor    %r12d,%r12d
  3b:	eb e1                	jmp    0x1e
  3d:	0f 1f 00             	nopl   (%rax)

Code starting with the faulting instruction
===========================================
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	41 5d                	pop    %r13
   5:	41 5e                	pop    %r14
   7:	41 5f                	pop    %r15
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	45 31 e4             	xor    %r12d,%r12d
  11:	eb e1                	jmp    0xfffffffffffffff4
  13:	0f 1f 00             	nopl   (%rax)
[ 4879.498168][    C3] RSP: 0018:ffffc9000051f4a0 EFLAGS: 00000282
[ 4879.498485][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4879.498895][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4879.499304][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4879.499716][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 4879.500127][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 4879.500540][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4879.500999][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4879.501342][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4879.501757][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4879.502167][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4879.502575][    C3] PKRU: 55555554
[ 4879.502763][    C3] Call Trace:
[ 4879.502939][    C3]  <IRQ>
[ 4879.503090][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 4879.503370][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 4879.503630][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 4879.503888][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 4879.504185][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 4879.504421][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 4879.504698][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 4879.504977][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 4879.505242][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 4879.505535][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4879.505785][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 4879.506107][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4879.506388][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4879.506686][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4879.506960][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4879.507273][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4879.507546][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4879.507871][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4879.508180][    C3]  </IRQ>
[ 4879.508334][    C3]  <TASK>
[ 4879.508492][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4879.508815][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4879.509123][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4879.509430][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4879.509669][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4879.509966][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4879.510290][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4879.510596][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4879.510855][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4879.511137][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4879.511434][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4879.511682][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4879.511929][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4879.512170][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4879.512413][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4879.512664][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4879.512975][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4879.513240][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4879.513584][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4879.513863][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4879.514164][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4879.514472][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4879.514769][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4879.515021][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4879.515285][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4879.515532][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4879.515860][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4879.516159][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4879.516483][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4879.516798][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4879.517055][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4879.517307][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4879.517560][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4879.517884][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4879.518128][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4879.518369][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4879.518700][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4879.518951][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4879.519302][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4879.519628][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4879.519922][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4879.520241][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4879.520489][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4879.520722][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4879.521014][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4879.521273][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4879.521520][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4879.521790][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4879.522053][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4879.522292][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4879.522574][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4879.522815][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4879.523063][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4879.523405][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4879.523672][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4879.523940][ C3] kthread (kernel/kthread.c:388) 
[ 4879.524155][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4879.524394][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4879.524629][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4879.524871][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4904.564891][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4904.565382][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4904.565874][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4904.566362][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4904.567336][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4904.567968][    C3] Workqueue: netns cleanup_net
[ 4904.568222][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4904.568555][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 4904.569556][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 4904.569872][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4904.570283][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4904.570694][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4904.571106][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4904.571517][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4904.571926][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4904.572387][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4904.572730][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4904.573143][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4904.573555][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4904.573965][    C3] PKRU: 55555554
[ 4904.574151][    C3] Call Trace:
[ 4904.574329][    C3]  <IRQ>
[ 4904.574480][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4904.574750][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4904.575002][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4904.575287][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4904.575570][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4904.575866][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4904.576139][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4904.576456][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4904.576726][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4904.577045][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4904.577350][    C3]  </IRQ>
[ 4904.577504][    C3]  <TASK>
[ 4904.577658][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4904.577989][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4904.578295][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 4904.578599][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4904.578921][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4904.579227][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4904.579485][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4904.579764][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4904.580058][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4904.580305][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4904.580554][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4904.580793][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4904.581031][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4904.581281][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4904.581588][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4904.581852][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4904.582196][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4904.582475][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4904.582774][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4904.583076][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4904.583374][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4904.583621][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4904.583881][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4904.584129][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4904.584457][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4904.584751][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4904.585075][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4904.585390][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4904.585646][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4904.585899][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4904.586150][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4904.586467][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4904.586715][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4904.586954][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4904.587287][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4904.587537][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4904.587895][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4904.588222][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4904.588515][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4904.588837][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4904.589084][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4904.589316][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4904.589612][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4904.589871][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4904.590114][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4904.590385][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4904.590645][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4904.590885][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4904.591165][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4904.591410][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4904.591658][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4904.592000][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4904.592269][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4904.592537][ C3] kthread (kernel/kthread.c:388) 
[ 4904.592752][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4904.592994][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4904.593227][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4904.593468][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4932.564896][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4932.565389][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4932.565880][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4932.566366][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4932.567338][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4932.567973][    C3] Workqueue: netns cleanup_net
[ 4932.568226][ C3] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4932.568556][ C3] Code: 0f 1f 44 00 00 49 89 fd 49 89 fc 41 be 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 <be> 04 00 00 00 48 89 ef e8 d0 79 e9 fd 41 0f b6 45 00 41 38 c4 7c
All code
========
   0:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   5:	49 89 fd             	mov    %rdi,%r13
   8:	49 89 fc             	mov    %rdi,%r12
   b:	41 be 01 00 00 00    	mov    $0x1,%r14d
  11:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  18:	fc ff df 
  1b:	49 c1 ed 03          	shr    $0x3,%r13
  1f:	41 83 e4 07          	and    $0x7,%r12d
  23:	49 01 c5             	add    %rax,%r13
  26:	41 83 c4 03          	add    $0x3,%r12d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 d0 79 e9 fd       	call   0xfffffffffde97a07
  37:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  3c:	41 38 c4             	cmp    %al,%r12b
  3f:	7c                   	.byte 0x7c

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 d0 79 e9 fd       	call   0xfffffffffde979dd
   d:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  12:	41 38 c4             	cmp    %al,%r12b
  15:	7c                   	.byte 0x7c
[ 4932.569555][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 4932.569870][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4932.570282][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4932.570691][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4932.571100][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4932.571511][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4932.571923][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4932.572384][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4932.572726][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4932.573137][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4932.573549][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4932.573959][    C3] PKRU: 55555554
[ 4932.574147][    C3] Call Trace:
[ 4932.574321][    C3]  <IRQ>
[ 4932.574475][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4932.574746][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4932.574996][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4932.575282][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4932.575562][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4932.575862][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4932.576136][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4932.576451][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4932.576721][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4932.577038][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4932.577344][    C3]  </IRQ>
[ 4932.577498][    C3]  <TASK>
[ 4932.577661][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4932.577987][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4932.578290][ C3] ? queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4932.578590][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4932.578911][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4932.579216][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4932.579475][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4932.579753][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4932.580049][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4932.580296][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4932.580543][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4932.580782][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4932.581022][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4932.581270][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4932.581578][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4932.581846][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4932.582188][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4932.582467][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4932.582768][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4932.583070][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4932.583366][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4932.583616][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4932.583875][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4932.584119][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4932.584446][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4932.584744][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4932.585067][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4932.585379][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4932.585635][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4932.585887][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4932.586138][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4932.586456][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4932.586702][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4932.586942][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4932.587275][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4932.587526][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4932.587883][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4932.588210][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4932.588505][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4932.588824][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4932.589072][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4932.589308][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4932.589600][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4932.589860][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4932.590107][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4932.590378][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4932.590639][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4932.590875][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4932.591160][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4932.591403][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4932.591653][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4932.591996][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4932.592264][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4932.592531][ C3] kthread (kernel/kthread.c:388) 
[ 4932.592748][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4932.592987][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4932.593222][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4932.593465][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4937.031267][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 1409829 jiffies s: 467069 root: 0x8/.
| [ 4937.031932][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4937.032310][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 4937.032599][    C3] NMI backtrace for cpu 3
[ 4937.032606][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4937.032609][    C3] Workqueue: netns cleanup_net
[ 4937.032613][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 4937.032618][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 4937.032621][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 4937.032623][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 4937.032625][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4937.032626][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4937.032627][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4937.032629][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 4937.032631][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4937.032632][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4937.032636][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4937.032637][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4937.032638][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4937.032640][    C3] PKRU: 55555554
[ 4937.032640][    C3] Call Trace:
[ 4937.032642][    C3]  <NMI>
[ 4937.032645][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 4937.032649][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 4937.032653][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 4937.032657][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 4937.032661][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 4937.032663][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 4937.032666][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4937.032671][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4937.032674][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 4937.032677][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 4937.032680][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 4937.032683][    C3]  </NMI>
[ 4937.032683][    C3]  <TASK>
[ 4937.032684][ C3] kasan_report (mm/kasan/report.c:585) 
[ 4937.032687][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4937.032692][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4937.032696][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4937.032699][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4937.032704][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4937.032708][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4937.032711][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4937.032714][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4937.032716][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4937.032721][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4937.032723][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4937.032728][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4937.032730][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4937.032734][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4937.032737][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4937.032740][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4937.032744][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4937.032749][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4937.032752][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4937.032757][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4937.032762][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4937.032766][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4937.032768][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4937.032775][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4937.032782][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4937.032787][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4937.032792][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4937.032796][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4937.032800][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4937.032804][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4937.032811][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4937.032814][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4937.032818][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4937.032822][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4937.032825][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4937.032827][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4937.032832][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4937.032835][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4937.032838][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4937.032841][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4937.032844][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4937.032846][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4937.032849][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4937.032852][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4937.032856][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4937.032860][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4937.032863][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4937.032867][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4937.032870][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4937.032873][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4937.032877][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4937.032880][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4937.032882][ C3] kthread (kernel/kthread.c:388) 
[ 4937.032884][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4937.032887][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4937.032889][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4937.032891][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4937.032898][    C3]  </TASK>
| [ 4957.529229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4957.529608][    C3] rcu: 3-....: (1428586 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=314585
| [ 4957.530189][    C3] rcu: (t=1430622 jiffies g=2723341 q=5640 ncpus=4)
[ 4957.531023][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4957.531655][    C3] Workqueue: netns cleanup_net
[ 4957.531911][ C3] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 4957.532199][ C3] Code: 48 c7 c7 b0 c2 9e a9 5b 5d 41 5c e9 9a b3 9b ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 af ef ff ff 66 66 2e 0f 1f
All code
========
   0:	48 c7 c7 b0 c2 9e a9 	mov    $0xffffffffa99ec2b0,%rdi
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	e9 9a b3 9b ff       	jmp    0xffffffffff9bb3aa
  10:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  17:	00 00 00 
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 af ef ff ff       	jmp    0xffffffffffffefea
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 af ef ff ff       	jmp    0xffffffffffffefc0
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 4957.533199][    C3] RSP: 0018:ffffc9000051f4c8 EFLAGS: 00000206
[ 4957.533516][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4957.533926][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4957.534339][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4957.534751][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 4957.535162][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 4957.535576][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4957.536037][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4957.536382][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4957.536795][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4957.537206][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4957.537620][    C3] PKRU: 55555554
[ 4957.537808][    C3] Call Trace:
[ 4957.537985][    C3]  <IRQ>
[ 4957.538136][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 4957.538419][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 4957.538678][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 4957.538937][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 4957.539234][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 4957.539469][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 4957.539749][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 4957.540026][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 4957.540291][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 4957.540583][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4957.540833][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 4957.541157][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4957.541436][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4957.541735][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4957.542010][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4957.542323][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4957.542594][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4957.542910][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4957.543218][    C3]  </IRQ>
[ 4957.543371][    C3]  <TASK>
[ 4957.543528][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4957.543853][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4957.544159][ C3] ? __pfx___kasan_check_read (mm/kasan/shadow.c:30) 
[ 4957.544449][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4957.544738][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4957.545063][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4957.545367][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4957.545622][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4957.545903][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4957.546194][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4957.546440][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4957.546688][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4957.546923][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4957.547163][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4957.547413][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4957.547720][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4957.547983][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4957.548331][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4957.548609][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4957.548908][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4957.549213][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4957.549508][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4957.549758][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4957.550019][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4957.550267][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4957.550592][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4957.550889][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4957.551216][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4957.551531][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4957.551787][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4957.552038][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4957.552291][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4957.552610][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4957.552860][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4957.553099][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4957.553430][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4957.553683][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4957.554032][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4957.554358][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4957.554654][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4957.554976][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4957.555222][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4957.555461][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4957.555753][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4957.556012][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4957.556260][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4957.556530][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4957.556791][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4957.557031][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4957.557312][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4957.557560][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4957.557805][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4957.558151][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4957.558420][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4957.558688][ C3] kthread (kernel/kthread.c:388) 
[ 4957.558903][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4957.559145][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4957.559378][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4957.559621][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 4984.564882][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 4984.565372][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 4984.565864][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 4984.566351][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 4984.567333][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 4984.567962][    C3] Workqueue: netns cleanup_net
[ 4984.568215][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 4984.568486][ C3] Code: 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 44 89 e0 5b <5d> 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb e1 0f 1f 00
All code
========
   0:	7c f5                	jl     0xfffffffffffffff7
   2:	ff                   	(bad)
   3:	ff 48 8d             	decl   -0x73(%rax)
   6:	7c 24                	jl     0x2c
   8:	10 e8                	adc    %ch,%al
   a:	92                   	xchg   %eax,%edx
   b:	fa                   	cli
   c:	ff                   	(bad)
   d:	ff 0f                	decl   (%rdi)
   f:	b6 d3                	mov    $0xd3,%dh
  11:	48 89 ee             	mov    %rbp,%rsi
  14:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  19:	e8 02 fd ff ff       	call   0xfffffffffffffd20
  1e:	ff 34 24             	push   (%rsp)
  21:	9d                   	popf
  22:	48 83 c4 70          	add    $0x70,%rsp
  26:	44 89 e0             	mov    %r12d,%eax
  29:	5b                   	pop    %rbx
  2a:*	5d                   	pop    %rbp		<-- trapping instruction
  2b:	41 5c                	pop    %r12
  2d:	41 5d                	pop    %r13
  2f:	41 5e                	pop    %r14
  31:	41 5f                	pop    %r15
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	45 31 e4             	xor    %r12d,%r12d
  3b:	eb e1                	jmp    0x1e
  3d:	0f 1f 00             	nopl   (%rax)

Code starting with the faulting instruction
===========================================
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	41 5d                	pop    %r13
   5:	41 5e                	pop    %r14
   7:	41 5f                	pop    %r15
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	45 31 e4             	xor    %r12d,%r12d
  11:	eb e1                	jmp    0xfffffffffffffff4
  13:	0f 1f 00             	nopl   (%rax)
[ 4984.569484][    C3] RSP: 0018:ffffc9000051f4a0 EFLAGS: 00000282
[ 4984.569799][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 4984.570210][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 4984.570619][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 4984.571027][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 4984.571437][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 4984.571847][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 4984.572306][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4984.572646][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 4984.573057][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4984.573468][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4984.573878][    C3] PKRU: 55555554
[ 4984.574064][    C3] Call Trace:
[ 4984.574245][    C3]  <IRQ>
[ 4984.574400][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 4984.574669][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 4984.574920][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 4984.575211][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 4984.575492][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 4984.575789][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4984.576062][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 4984.576379][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 4984.576650][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 4984.576968][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 4984.577271][    C3]  </IRQ>
[ 4984.577432][    C3]  <TASK>
[ 4984.577586][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 4984.577910][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4984.578216][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4984.578519][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 4984.578759][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 4984.579052][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 4984.579376][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 4984.579684][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4984.579942][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4984.580223][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 4984.580516][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4984.580762][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4984.581012][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 4984.581250][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 4984.581490][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 4984.581743][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4984.582050][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 4984.582317][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4984.582660][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 4984.582936][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 4984.583236][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4984.583541][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 4984.583837][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 4984.584086][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 4984.584346][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 4984.584594][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 4984.584921][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 4984.585217][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 4984.585541][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 4984.585855][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 4984.586113][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 4984.586364][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 4984.586615][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 4984.586933][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 4984.587182][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 4984.587425][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 4984.587756][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 4984.588007][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 4984.588360][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 4984.588686][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 4984.588980][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 4984.589303][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 4984.589549][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 4984.589781][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 4984.590075][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 4984.590335][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 4984.590580][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 4984.590849][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 4984.591113][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 4984.591355][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 4984.591635][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 4984.591879][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 4984.592125][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 4984.592469][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4984.592736][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 4984.593004][ C3] kthread (kernel/kthread.c:388) 
[ 4984.593218][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4984.593461][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 4984.593692][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 4984.593935][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5012.564894][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5012.565382][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5012.565874][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5012.566357][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5012.567335][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5012.567964][    C3] Workqueue: netns cleanup_net
[ 5012.568214][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 5012.568484][ C3] Code: 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 44 89 e0 5b <5d> 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb e1 0f 1f 00
All code
========
   0:	7c f5                	jl     0xfffffffffffffff7
   2:	ff                   	(bad)
   3:	ff 48 8d             	decl   -0x73(%rax)
   6:	7c 24                	jl     0x2c
   8:	10 e8                	adc    %ch,%al
   a:	92                   	xchg   %eax,%edx
   b:	fa                   	cli
   c:	ff                   	(bad)
   d:	ff 0f                	decl   (%rdi)
   f:	b6 d3                	mov    $0xd3,%dh
  11:	48 89 ee             	mov    %rbp,%rsi
  14:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  19:	e8 02 fd ff ff       	call   0xfffffffffffffd20
  1e:	ff 34 24             	push   (%rsp)
  21:	9d                   	popf
  22:	48 83 c4 70          	add    $0x70,%rsp
  26:	44 89 e0             	mov    %r12d,%eax
  29:	5b                   	pop    %rbx
  2a:*	5d                   	pop    %rbp		<-- trapping instruction
  2b:	41 5c                	pop    %r12
  2d:	41 5d                	pop    %r13
  2f:	41 5e                	pop    %r14
  31:	41 5f                	pop    %r15
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	45 31 e4             	xor    %r12d,%r12d
  3b:	eb e1                	jmp    0x1e
  3d:	0f 1f 00             	nopl   (%rax)

Code starting with the faulting instruction
===========================================
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	41 5d                	pop    %r13
   5:	41 5e                	pop    %r14
   7:	41 5f                	pop    %r15
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	45 31 e4             	xor    %r12d,%r12d
  11:	eb e1                	jmp    0xfffffffffffffff4
  13:	0f 1f 00             	nopl   (%rax)
[ 5012.569483][    C3] RSP: 0018:ffffc9000051f480 EFLAGS: 00000286
[ 5012.569798][    C3] RAX: 0000000000000000 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 5012.570211][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5012.570622][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5012.571033][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 5012.571442][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 5012.571859][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5012.572319][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5012.572662][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5012.573075][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5012.573487][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5012.573901][    C3] PKRU: 55555554
[ 5012.574088][    C3] Call Trace:
[ 5012.574264][    C3]  <IRQ>
[ 5012.574417][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5012.574688][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5012.574937][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5012.575227][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5012.575507][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5012.575805][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5012.576079][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5012.576394][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5012.576664][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5012.576984][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5012.577295][    C3]  </IRQ>
[ 5012.577449][    C3]  <TASK>
[ 5012.577606][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5012.577931][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5012.578233][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5012.578534][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 5012.578775][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5012.579032][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5012.579323][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5012.579647][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5012.579954][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5012.580213][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5012.580493][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5012.580788][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5012.581035][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5012.581286][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5012.581524][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5012.581763][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5012.582015][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5012.582324][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5012.582588][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5012.582931][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5012.583210][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5012.583511][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5012.583816][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5012.584114][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5012.584363][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5012.584623][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5012.584872][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5012.585203][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5012.585500][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5012.585825][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5012.586141][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5012.586399][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5012.586654][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5012.586906][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5012.587228][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5012.587478][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5012.587718][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5012.588050][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5012.588301][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5012.588654][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5012.588983][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5012.589276][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5012.589599][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5012.589849][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5012.590082][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5012.590377][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5012.590637][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5012.590881][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5012.591151][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5012.591413][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5012.591655][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5012.591937][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5012.592182][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5012.592429][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5012.592772][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5012.593042][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5012.593310][ C3] kthread (kernel/kthread.c:388) 
[ 5012.593525][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5012.593768][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5012.594005][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5012.594248][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5035.335267][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 1508133 jiffies s: 467069 root: 0x8/.
| [ 5035.336165][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5035.336689][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 5035.337114][    C3] NMI backtrace for cpu 3
[ 5035.337123][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5035.337125][    C3] Workqueue: netns cleanup_net
[ 5035.337131][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 5035.337136][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 5035.337139][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 5035.337141][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 5035.337143][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5035.337144][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5035.337146][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 5035.337147][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 5035.337149][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5035.337151][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5035.337155][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5035.337156][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5035.337158][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5035.337159][    C3] PKRU: 55555554
[ 5035.337160][    C3] Call Trace:
[ 5035.337162][    C3]  <NMI>
[ 5035.337164][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 5035.337170][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 5035.337173][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 5035.337178][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 5035.337182][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 5035.337184][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 5035.337187][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5035.337192][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5035.337195][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 5035.337198][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 5035.337202][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 5035.337204][    C3]  </NMI>
[ 5035.337205][    C3]  <TASK>
[ 5035.337209][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5035.337214][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5035.337217][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5035.337221][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5035.337226][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5035.337232][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5035.337234][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5035.337238][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5035.337240][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5035.337245][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5035.337248][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5035.337252][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5035.337255][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5035.337260][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5035.337263][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5035.337266][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5035.337270][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5035.337274][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5035.337277][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5035.337283][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5035.337288][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5035.337292][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5035.337295][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5035.337301][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5035.337308][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5035.337314][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5035.337318][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5035.337322][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5035.337326][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5035.337330][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5035.337338][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5035.337341][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5035.337345][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5035.337351][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5035.337354][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5035.337357][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5035.337361][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5035.337364][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5035.337367][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5035.337370][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5035.337374][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5035.337376][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5035.337379][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5035.337381][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5035.337386][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5035.337390][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5035.337394][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5035.337398][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5035.337401][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5035.337404][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5035.337408][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5035.337411][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5035.337413][ C3] kthread (kernel/kthread.c:388) 
[ 5035.337415][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5035.337418][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5035.337420][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5035.337422][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5035.337429][    C3]  </TASK>
| [ 5035.563229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5035.563599][    C3] rcu: 3-....: (1506504 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=332137
| [ 5035.564179][    C3] rcu: (t=1508656 jiffies g=2723341 q=5640 ncpus=4)
[ 5035.565007][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5035.565640][    C3] Workqueue: netns cleanup_net
[ 5035.565896][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5035.566231][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5035.567234][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5035.567552][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5035.567963][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5035.568373][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5035.568785][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5035.569197][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5035.569608][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5035.570070][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5035.570411][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5035.570825][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5035.571236][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5035.571646][    C3] PKRU: 55555554
[ 5035.571834][    C3] Call Trace:
[ 5035.572010][    C3]  <IRQ>
[ 5035.572162][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 5035.572443][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 5035.572704][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 5035.572963][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 5035.573258][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 5035.573496][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 5035.573773][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 5035.574051][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 5035.574316][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 5035.574610][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5035.574861][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 5035.575182][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5035.575463][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5035.575759][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5035.576032][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5035.576348][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5035.576617][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5035.576936][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5035.577248][    C3]  </IRQ>
[ 5035.577403][    C3]  <TASK>
[ 5035.577559][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5035.577885][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5035.578191][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5035.578498][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5035.578821][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5035.579128][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5035.579391][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5035.579672][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5035.579968][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5035.580211][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5035.580459][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5035.580699][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5035.580935][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5035.581186][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5035.581493][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5035.581758][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5035.582101][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5035.582378][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5035.582680][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5035.582984][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5035.583281][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5035.583531][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5035.583791][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5035.584037][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5035.584364][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5035.584661][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5035.584984][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5035.585306][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5035.585564][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5035.585816][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5035.586070][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5035.586386][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5035.586634][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5035.586874][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5035.587214][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5035.587466][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5035.587818][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5035.588145][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5035.588438][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5035.588761][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5035.589009][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5035.589242][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5035.589538][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5035.589797][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5035.590043][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5035.590313][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5035.590576][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5035.590814][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5035.591095][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5035.591341][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5035.591589][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5035.591933][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5035.592201][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5035.592469][ C3] kthread (kernel/kthread.c:388) 
[ 5035.592685][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5035.592927][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5035.593161][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5035.593402][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5060.564908][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5060.565407][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5060.565900][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5060.566391][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5060.567375][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5060.568006][    C3] Workqueue: netns cleanup_net
[ 5060.568261][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:87 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 5060.568564][ C3] Code: 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 a5 <80> 38 00 74 f2 e9 74 ff ff ff b8 01 00 00 00 c3 cc cc cc cc 48 29
All code
========
   0:	2c 48                	sub    $0x48,%al
   2:	89 c2                	mov    %eax,%edx
   4:	48 85 c0             	test   %rax,%rax
   7:	75 b0                	jne    0xffffffffffffffb9
   9:	48 89 da             	mov    %rbx,%rdx
   c:	4c 89 d8             	mov    %r11,%rax
   f:	4c 29 da             	sub    %r11,%rdx
  12:	e9 49 ff ff ff       	jmp    0xffffffffffffff60
  17:	48 85 d2             	test   %rdx,%rdx
  1a:	74 b3                	je     0xffffffffffffffcf
  1c:	48 01 ea             	add    %rbp,%rdx
  1f:	eb 09                	jmp    0x2a
  21:	48 83 c0 01          	add    $0x1,%rax
  25:	48 39 d0             	cmp    %rdx,%rax
  28:	74 a5                	je     0xffffffffffffffcf
  2a:*	80 38 00             	cmpb   $0x0,(%rax)		<-- trapping instruction
  2d:	74 f2                	je     0x21
  2f:	e9 74 ff ff ff       	jmp    0xffffffffffffffa8
  34:	b8 01 00 00 00       	mov    $0x1,%eax
  39:	c3                   	ret
  3a:	cc                   	int3
  3b:	cc                   	int3
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	48                   	rex.W
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	80 38 00             	cmpb   $0x0,(%rax)
   3:	74 f2                	je     0xfffffffffffffff7
   5:	e9 74 ff ff ff       	jmp    0xffffffffffffff7e
   a:	b8 01 00 00 00       	mov    $0x1,%eax
   f:	c3                   	ret
  10:	cc                   	int3
  11:	cc                   	int3
  12:	cc                   	int3
  13:	cc                   	int3
  14:	48                   	rex.W
  15:	29                   	.byte 0x29
[ 5060.569564][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000286
[ 5060.569882][    C3] RAX: ffffed10045e5641 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 5060.570293][    C3] RDX: ffffed10045e5642 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5060.570705][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 5060.571115][    C3] R10: ffff888022f2b20b R11: 205d313754202020 R12: 0000000000000003
[ 5060.571528][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5060.571939][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5060.572403][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5060.572746][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5060.573158][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5060.573571][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5060.573981][    C3] PKRU: 55555554
[ 5060.574169][    C3] Call Trace:
[ 5060.574344][    C3]  <IRQ>
[ 5060.574501][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5060.574772][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5060.575023][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5060.575309][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5060.575589][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5060.575887][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5060.576161][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5060.576483][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5060.576754][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5060.577076][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5060.577380][    C3]  </IRQ>
[ 5060.577536][    C3]  <TASK>
[ 5060.577693][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5060.578020][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5060.578319][ C3] ? kasan_check_range (mm/kasan/generic.c:87 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 5060.578588][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5060.578882][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5060.579203][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5060.579510][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5060.579769][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5060.580049][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5060.580349][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5060.580597][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5060.580847][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5060.581087][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5060.581327][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5060.581579][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5060.581888][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5060.582153][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5060.582497][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5060.582774][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5060.583076][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5060.583380][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5060.583681][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5060.583931][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5060.584192][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5060.584440][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5060.584770][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5060.585069][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5060.585394][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5060.585710][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5060.585966][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5060.586220][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5060.586474][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5060.586792][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5060.587044][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5060.587285][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5060.587616][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5060.587869][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5060.588220][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5060.588549][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5060.588844][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5060.589167][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5060.589416][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5060.589651][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5060.589946][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5060.590208][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5060.590456][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5060.590727][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5060.590989][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5060.591228][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5060.591512][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5060.591756][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5060.592004][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5060.592349][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5060.592618][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5060.592886][ C3] kthread (kernel/kthread.c:388) 
[ 5060.593102][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5060.593352][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5060.593588][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5060.593830][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5088.564903][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5088.565397][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5088.565896][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5088.566389][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5088.567374][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5088.568004][    C3] Workqueue: netns cleanup_net
[ 5088.568259][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5088.568596][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5088.569602][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5088.569921][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5088.570335][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5088.570751][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5088.571165][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5088.571576][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5088.571991][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5088.572459][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5088.572804][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5088.573226][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5088.573638][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5088.574050][    C3] PKRU: 55555554
[ 5088.574237][    C3] Call Trace:
[ 5088.574416][    C3]  <IRQ>
[ 5088.574568][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5088.574840][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5088.575092][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5088.575379][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5088.575662][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5088.575959][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5088.576238][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5088.576554][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5088.576829][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5088.577149][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5088.577457][    C3]  </IRQ>
[ 5088.577612][    C3]  <TASK>
[ 5088.577768][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5088.578092][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5088.578401][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5088.578706][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5088.579028][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5088.579335][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5088.579592][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5088.579874][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5088.580170][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5088.580415][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5088.580664][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5088.580904][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5088.581142][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5088.581395][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5088.581702][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5088.581966][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5088.582313][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5088.582590][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5088.582892][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5088.583195][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5088.583495][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5088.583743][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5088.584004][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5088.584251][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5088.584578][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5088.584876][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5088.585200][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5088.585517][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5088.585773][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5088.586026][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5088.586278][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5088.586594][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5088.586849][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5088.587089][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5088.587422][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5088.587674][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5088.588025][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5088.588354][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5088.588646][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5088.588970][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5088.589217][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5088.589450][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5088.589744][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5088.590005][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5088.590251][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5088.590521][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5088.590782][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5088.591020][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5088.591303][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5088.591546][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5088.591792][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5088.592135][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5088.592404][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5088.592671][ C3] kthread (kernel/kthread.c:388) 
[ 5088.592885][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5088.593126][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5088.593360][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5088.593598][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5088.593854][    C3]  </TASK>
| [ 5113.597229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5113.597600][    C3] rcu: 3-....: (1584448 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=349829
| [ 5113.598180][    C3] rcu: (t=1586690 jiffies g=2723341 q=5640 ncpus=4)
[ 5113.599014][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5113.599643][    C3] Workqueue: netns cleanup_net
[ 5113.599898][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 5113.600166][ C3] Code: 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	41 57                	push   %r15
  1a:	41 56                	push   %r14
  1c:	41 55                	push   %r13
  1e:	41 54                	push   %r12
  20:	55                   	push   %rbp
  21:	53                   	push   %rbx
  22:	48 83 ec 70          	sub    $0x70,%rsp
  26:	9c                   	pushf
  27:	8f 04 24             	pop    (%rsp)
  2a:*	0f 01 ca             	clac		<-- trapping instruction
  2d:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  34:	1f 00 
  36:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3d:	85 c0                	test   %eax,%eax
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	0f 01 ca             	clac
   3:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   a:	1f 00 
   c:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  13:	85 c0                	test   %eax,%eax
  15:	0f                   	.byte 0xf
[ 5113.601164][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 5113.601482][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5113.601891][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5113.602302][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5113.602711][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5113.603120][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5113.603532][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5113.603991][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5113.604338][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5113.604750][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5113.605159][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5113.605570][    C3] PKRU: 55555554
[ 5113.605756][    C3] Call Trace:
[ 5113.605933][    C3]  <IRQ>
[ 5113.606084][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 5113.606367][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 5113.606626][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 5113.606887][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 5113.607183][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 5113.607421][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 5113.607702][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 5113.607988][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 5113.608254][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 5113.608550][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5113.608803][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 5113.609129][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5113.609414][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5113.609716][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5113.609991][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5113.610309][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5113.610581][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5113.610902][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5113.611209][    C3]  </IRQ>
[ 5113.611365][    C3]  <TASK>
[ 5113.611521][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5113.611850][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5113.612156][ C3] ? kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 5113.612400][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5113.612705][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5113.613001][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5113.613328][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5113.613636][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5113.613893][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5113.614178][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5113.614472][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5113.614721][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5113.614973][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5113.615213][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5113.615458][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5113.615710][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5113.616017][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5113.616283][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5113.616630][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5113.616915][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5113.617214][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5113.617522][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5113.617820][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5113.618072][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5113.618334][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5113.618588][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5113.618917][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5113.619216][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5113.619545][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5113.619864][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5113.620122][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5113.620376][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5113.620633][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5113.620955][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5113.621205][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5113.621445][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5113.621780][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5113.622033][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5113.622386][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5113.622717][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5113.623015][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5113.623341][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5113.623590][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5113.623827][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5113.624127][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5113.624390][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5113.624638][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5113.624909][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5113.625172][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5113.625416][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5113.625702][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5113.625949][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5113.626196][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5113.626545][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5113.626819][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5113.627091][ C3] kthread (kernel/kthread.c:388) 
[ 5113.627305][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5113.627549][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5113.627783][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5113.628026][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5133.639247][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 1606437 jiffies s: 467069 root: 0x8/.
| [ 5133.639908][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5133.640291][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 5133.640578][    C3] NMI backtrace for cpu 3
[ 5133.640588][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5133.640590][    C3] Workqueue: netns cleanup_net
[ 5133.640597][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:579) 
[ 5133.640604][ C3] Code: e8 f5 fd ff ff 48 83 c4 68 5b 5d 41 5c c3 cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 0f 1f 00 41 57 41 56 41 55 41 54 55 53 48 83 ec 70 9c 8f 04 24
All code
========
   0:	e8 f5 fd ff ff       	call   0xfffffffffffffdfa
   5:	48 83 c4 68          	add    $0x68,%rsp
   9:	5b                   	pop    %rbx
   a:	5d                   	pop    %rbp
   b:	41 5c                	pop    %r12
   d:	c3                   	ret
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	cc                   	int3
  12:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  19:	00 
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	66 0f 1f 00          	nopw   (%rax)		<-- trapping instruction
  2e:	41 57                	push   %r15
  30:	41 56                	push   %r14
  32:	41 55                	push   %r13
  34:	41 54                	push   %r12
  36:	55                   	push   %rbp
  37:	53                   	push   %rbx
  38:	48 83 ec 70          	sub    $0x70,%rsp
  3c:	9c                   	pushf
  3d:	8f 04 24             	pop    (%rsp)

Code starting with the faulting instruction
===========================================
   0:	66 0f 1f 00          	nopw   (%rax)
   4:	41 57                	push   %r15
   6:	41 56                	push   %r14
   8:	41 55                	push   %r13
   a:	41 54                	push   %r12
   c:	55                   	push   %rbp
   d:	53                   	push   %rbx
   e:	48 83 ec 70          	sub    $0x70,%rsp
  12:	9c                   	pushf
  13:	8f 04 24             	pop    (%rsp)
[ 5133.640606][    C3] RSP: 0018:ffffc9000051f4a8 EFLAGS: 00000213
[ 5133.640609][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 5133.640611][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5133.640612][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 5133.640614][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5133.640616][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5133.640617][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5133.640620][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5133.640623][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5133.640625][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5133.640626][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5133.640628][    C3] PKRU: 55555554
[ 5133.640629][    C3] Call Trace:
[ 5133.640632][    C3]  <NMI>
[ 5133.640636][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 5133.640641][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 5133.640645][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 5133.640650][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 5133.640654][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 5133.640657][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 5133.640661][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5133.640666][ C3] ? __pfx_kasan_report (mm/kasan/report.c:579) 
[ 5133.640670][ C3] ? __pfx_kasan_report (mm/kasan/report.c:579) 
[ 5133.640673][ C3] ? __pfx_kasan_report (mm/kasan/report.c:579) 
[ 5133.640676][    C3]  </NMI>
[ 5133.640677][    C3]  <TASK>
[ 5133.640677][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5133.640682][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5133.640686][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5133.640690][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5133.640695][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5133.640701][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5133.640703][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5133.640707][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5133.640709][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5133.640714][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5133.640717][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5133.640722][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5133.640724][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5133.640730][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5133.640733][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5133.640736][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5133.640740][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5133.640745][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5133.640748][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5133.640755][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5133.640761][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5133.640765][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5133.640768][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5133.640776][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5133.640783][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5133.640789][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5133.640793][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5133.640798][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5133.640801][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5133.640806][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5133.640813][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5133.640818][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5133.640821][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5133.640827][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5133.640830][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5133.640833][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5133.640838][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5133.640841][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5133.640845][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5133.640848][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5133.640851][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5133.640854][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5133.640858][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5133.640860][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5133.640864][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5133.640869][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5133.640872][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5133.640876][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5133.640879][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5133.640882][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5133.640886][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5133.640889][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5133.640891][ C3] kthread (kernel/kthread.c:388) 
[ 5133.640894][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5133.640897][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5133.640900][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5133.640902][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5160.564919][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5160.565411][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5160.565906][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5160.566399][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5160.567402][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5160.568036][    C3] Workqueue: netns cleanup_net
[ 5160.568289][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5160.568624][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5160.569626][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5160.569943][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5160.570355][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5160.570768][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5160.571180][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5160.571592][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5160.572010][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5160.572479][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5160.572826][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5160.573247][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5160.573657][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5160.574063][    C3] PKRU: 55555554
[ 5160.574250][    C3] Call Trace:
[ 5160.574427][    C3]  <IRQ>
[ 5160.574578][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5160.574854][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5160.575110][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5160.575394][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5160.575676][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5160.575977][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5160.576255][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5160.576576][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5160.576846][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5160.577171][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5160.577480][    C3]  </IRQ>
[ 5160.577636][    C3]  <TASK>
[ 5160.577790][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5160.578114][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5160.578424][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5160.578733][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5160.579056][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5160.579362][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5160.579620][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5160.579899][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5160.580191][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5160.580436][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5160.580691][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5160.580930][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5160.581168][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5160.581419][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5160.581723][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5160.581987][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5160.582331][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5160.582612][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5160.582910][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5160.583213][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5160.583509][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5160.583755][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5160.584015][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5160.584262][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5160.584588][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5160.584885][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5160.585208][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5160.585522][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5160.585778][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5160.586030][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5160.586281][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5160.586605][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5160.586852][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5160.587090][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5160.587427][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5160.587676][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5160.588027][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5160.588359][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5160.588660][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5160.588980][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5160.589232][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5160.589467][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5160.589773][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5160.590041][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5160.590286][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5160.590559][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5160.590826][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5160.591073][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5160.591357][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5160.591602][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5160.591851][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5160.592203][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5160.592478][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5160.592747][ C3] kthread (kernel/kthread.c:388) 
[ 5160.592960][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5160.593203][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5160.593444][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5160.593693][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5188.564901][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5188.565402][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5188.565898][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5188.566388][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5188.567362][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5188.567989][    C3] Workqueue: netns cleanup_net
[ 5188.568246][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5188.568584][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5188.569592][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5188.569912][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5188.570328][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5188.570745][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5188.571158][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5188.571573][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5188.571988][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5188.572453][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5188.572800][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5188.573216][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5188.573631][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5188.574050][    C3] PKRU: 55555554
[ 5188.574238][    C3] Call Trace:
[ 5188.574419][    C3]  <IRQ>
[ 5188.574579][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5188.574857][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5188.575111][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5188.575398][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5188.575683][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5188.575984][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5188.576259][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5188.576582][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5188.576854][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5188.577173][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5188.577480][    C3]  </IRQ>
[ 5188.577637][    C3]  <TASK>
[ 5188.577794][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5188.578121][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5188.578426][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5188.578734][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5188.579058][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5188.579366][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5188.579625][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5188.579911][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5188.580206][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5188.580455][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5188.580706][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5188.580944][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5188.581186][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5188.581440][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5188.581746][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5188.582013][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5188.582361][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5188.582640][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5188.582941][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5188.583251][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5188.583547][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5188.583801][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5188.584062][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5188.584311][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5188.584639][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5188.584938][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5188.585265][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5188.585582][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5188.585840][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5188.586093][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5188.586354][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5188.586677][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5188.586927][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5188.587167][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5188.587501][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5188.587755][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5188.588108][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5188.588438][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5188.588735][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5188.589061][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5188.589309][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5188.589546][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5188.589840][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5188.590105][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5188.590353][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5188.590626][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5188.590889][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5188.591130][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5188.591416][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5188.591661][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5188.591907][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5188.592256][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5188.592527][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5188.592796][ C3] kthread (kernel/kthread.c:388) 
[ 5188.593012][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5188.593257][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5188.593492][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5188.593736][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5188.593995][    C3]  </TASK>
| [ 5191.632229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5191.632600][    C3] rcu: 3-....: (1662368 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=367130
| [ 5191.633183][    C3] rcu: (t=1664725 jiffies g=2723341 q=5640 ncpus=4)
[ 5191.634018][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5191.634648][    C3] Workqueue: netns cleanup_net
[ 5191.634903][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5191.635181][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 5191.636180][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 5191.636509][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 5191.636922][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5191.637334][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5191.637748][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5191.638158][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 5191.638571][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5191.639033][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5191.639380][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5191.639794][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5191.640206][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5191.640618][    C3] PKRU: 55555554
[ 5191.640804][    C3] Call Trace:
[ 5191.640982][    C3]  <IRQ>
[ 5191.641133][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 5191.641418][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 5191.641678][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 5191.641936][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 5191.642232][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 5191.642471][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 5191.642750][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 5191.643028][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 5191.643293][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 5191.643585][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5191.643836][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 5191.644160][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5191.644441][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5191.644740][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5191.645014][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5191.645330][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5191.645602][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5191.645921][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5191.646227][    C3]  </IRQ>
[ 5191.646387][    C3]  <TASK>
[ 5191.646543][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5191.646865][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5191.647165][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5191.647466][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5191.647713][ C3] kasan_report (mm/kasan/report.c:585) 
[ 5191.647943][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5191.648202][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5191.648492][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5191.648814][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5191.649122][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5191.649380][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5191.649660][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5191.649953][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5191.650200][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5191.650451][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5191.650692][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5191.650932][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5191.651183][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5191.651492][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5191.651757][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5191.652101][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5191.652378][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5191.652676][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5191.652982][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5191.653279][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5191.653527][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5191.653787][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5191.654035][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5191.654362][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5191.654659][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5191.654983][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5191.655299][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5191.655556][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5191.655806][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5191.656057][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5191.656379][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5191.656626][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5191.656864][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5191.657196][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5191.657448][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5191.657800][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5191.658126][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5191.658420][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5191.658743][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5191.658990][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5191.659222][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5191.659516][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5191.659774][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5191.660019][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5191.660289][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5191.660551][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5191.660791][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5191.661072][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5191.661317][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5191.661564][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5191.661907][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5191.662176][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5191.662444][ C3] kthread (kernel/kthread.c:388) 
[ 5191.662658][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5191.662902][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5191.663137][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5191.663383][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5216.564899][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5216.565393][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5216.565883][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5216.566375][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5216.567349][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5216.567980][    C3] Workqueue: netns cleanup_net
[ 5216.568234][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5216.568514][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 5216.569519][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 5216.569839][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 5216.570258][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5216.570677][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5216.571091][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5216.571505][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 5216.571916][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5216.572380][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5216.572725][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5216.573144][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5216.573558][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5216.573973][    C3] PKRU: 55555554
[ 5216.574161][    C3] Call Trace:
[ 5216.574340][    C3]  <IRQ>
[ 5216.574493][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5216.574764][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5216.575017][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5216.575305][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5216.575589][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5216.575888][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5216.576167][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5216.576486][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5216.576757][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5216.577078][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5216.577385][    C3]  </IRQ>
[ 5216.577542][    C3]  <TASK>
[ 5216.577697][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5216.578023][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5216.578323][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5216.578625][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5216.578874][ C3] kasan_report (mm/kasan/report.c:585) 
[ 5216.579104][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5216.579362][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5216.579651][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5216.579977][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5216.580286][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5216.580546][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5216.580827][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5216.581122][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5216.581370][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5216.581619][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5216.581857][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5216.582096][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5216.582348][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5216.582655][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5216.582920][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5216.583265][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5216.583542][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5216.583843][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5216.584150][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5216.584447][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5216.584697][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5216.584958][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5216.585205][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5216.585533][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5216.585837][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5216.586169][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5216.586487][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5216.586745][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5216.587000][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5216.587253][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5216.587572][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5216.587823][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5216.588065][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5216.588403][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5216.588654][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5216.589009][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5216.589339][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5216.589634][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5216.589958][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5216.590207][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5216.590441][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5216.590740][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5216.591003][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5216.591249][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5216.591522][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5216.591784][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5216.592026][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5216.592309][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5216.592555][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5216.592803][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5216.593149][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5216.593419][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5216.593688][ C3] kthread (kernel/kthread.c:388) 
[ 5216.593903][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5216.594149][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5216.594385][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5216.594627][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5231.943269][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 1704741 jiffies s: 467069 root: 0x8/.
| [ 5231.944264][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5231.944810][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 5231.945228][    C3] NMI backtrace for cpu 3
[ 5231.945239][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5231.945243][    C3] Workqueue: netns cleanup_net
[ 5231.945248][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5231.945254][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 5231.945257][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 5231.945259][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 5231.945261][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5231.945263][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5231.945264][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5231.945266][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 5231.945267][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5231.945269][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5231.945273][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5231.945275][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5231.945276][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5231.945277][    C3] PKRU: 55555554
[ 5231.945278][    C3] Call Trace:
[ 5231.945280][    C3]  <NMI>
[ 5231.945286][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 5231.945291][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 5231.945295][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 5231.945300][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 5231.945305][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 5231.945307][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 5231.945311][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5231.945316][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5231.945319][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5231.945322][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5231.945325][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5231.945328][    C3]  </NMI>
[ 5231.945329][    C3]  <TASK>
[ 5231.945329][ C3] kasan_report (mm/kasan/report.c:585) 
[ 5231.945335][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5231.945339][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5231.945343][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5231.945347][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5231.945352][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5231.945355][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5231.945358][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5231.945360][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5231.945365][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5231.945368][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5231.945372][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5231.945374][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5231.945380][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5231.945383][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5231.945386][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5231.945390][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5231.945395][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5231.945398][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5231.945408][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5231.945413][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5231.945416][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5231.945419][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5231.945428][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5231.945435][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5231.945440][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5231.945445][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5231.945449][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5231.945453][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5231.945457][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5231.945465][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5231.945469][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5231.945473][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5231.945478][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5231.945481][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5231.945484][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5231.945489][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5231.945492][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5231.945496][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5231.945499][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5231.945503][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5231.945505][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5231.945509][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5231.945511][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5231.945516][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5231.945520][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5231.945523][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5231.945528][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5231.945531][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5231.945534][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5231.945538][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5231.945541][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5231.945543][ C3] kthread (kernel/kthread.c:388) 
[ 5231.945545][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5231.945548][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5231.945551][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5231.945552][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5256.564899][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5256.565391][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5256.565883][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5256.566372][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5256.567345][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5256.567975][    C3] Workqueue: netns cleanup_net
[ 5256.568227][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5256.568560][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5256.569564][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5256.569881][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5256.570291][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5256.570703][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5256.571115][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5256.571525][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5256.571936][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5256.572398][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5256.572742][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5256.573160][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5256.573575][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5256.573989][    C3] PKRU: 55555554
[ 5256.574179][    C3] Call Trace:
[ 5256.574358][    C3]  <IRQ>
[ 5256.574511][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5256.574781][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5256.575035][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5256.575323][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5256.575608][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5256.575907][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5256.576188][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5256.576508][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5256.576780][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5256.577103][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5256.577411][    C3]  </IRQ>
[ 5256.577569][    C3]  <TASK>
[ 5256.577726][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5256.578055][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5256.578364][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5256.578669][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5256.578995][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5256.579303][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5256.579565][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5256.579846][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5256.580143][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5256.580391][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5256.580643][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5256.580884][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5256.581124][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5256.581377][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5256.581687][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5256.581952][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5256.582300][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5256.582580][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5256.582883][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5256.583189][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5256.583490][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5256.583739][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5256.584001][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5256.584252][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5256.584582][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5256.584880][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5256.585207][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5256.585526][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5256.585785][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5256.586046][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5256.586300][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5256.586619][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5256.586868][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5256.587109][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5256.587445][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5256.587696][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5256.588051][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5256.588381][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5256.588677][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5256.589001][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5256.589252][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5256.589487][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5256.589783][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5256.590046][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5256.590293][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5256.590566][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5256.590828][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5256.591071][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5256.591355][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5256.591600][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5256.591850][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5256.592197][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5256.592468][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5256.592738][ C3] kthread (kernel/kthread.c:388) 
[ 5256.592953][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5256.593197][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5256.593432][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5256.593675][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5256.593935][    C3]  </TASK>
| [ 5269.667229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5269.667607][    C3] rcu: 3-....: (1740287 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=384122
| [ 5269.668188][    C3] rcu: (t=1742760 jiffies g=2723341 q=5640 ncpus=4)
[ 5269.669025][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5269.669660][    C3] Workqueue: netns cleanup_net
[ 5269.669918][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 5269.670191][ C3] Code: 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 44 89 e0 5b <5d> 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb e1 0f 1f 00
All code
========
   0:	7c f5                	jl     0xfffffffffffffff7
   2:	ff                   	(bad)
   3:	ff 48 8d             	decl   -0x73(%rax)
   6:	7c 24                	jl     0x2c
   8:	10 e8                	adc    %ch,%al
   a:	92                   	xchg   %eax,%edx
   b:	fa                   	cli
   c:	ff                   	(bad)
   d:	ff 0f                	decl   (%rdi)
   f:	b6 d3                	mov    $0xd3,%dh
  11:	48 89 ee             	mov    %rbp,%rsi
  14:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  19:	e8 02 fd ff ff       	call   0xfffffffffffffd20
  1e:	ff 34 24             	push   (%rsp)
  21:	9d                   	popf
  22:	48 83 c4 70          	add    $0x70,%rsp
  26:	44 89 e0             	mov    %r12d,%eax
  29:	5b                   	pop    %rbx
  2a:*	5d                   	pop    %rbp		<-- trapping instruction
  2b:	41 5c                	pop    %r12
  2d:	41 5d                	pop    %r13
  2f:	41 5e                	pop    %r14
  31:	41 5f                	pop    %r15
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	45 31 e4             	xor    %r12d,%r12d
  3b:	eb e1                	jmp    0x1e
  3d:	0f 1f 00             	nopl   (%rax)

Code starting with the faulting instruction
===========================================
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	41 5d                	pop    %r13
   5:	41 5e                	pop    %r14
   7:	41 5f                	pop    %r15
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	45 31 e4             	xor    %r12d,%r12d
  11:	eb e1                	jmp    0xfffffffffffffff4
  13:	0f 1f 00             	nopl   (%rax)
[ 5269.671200][    C3] RSP: 0018:ffffc9000051f4a0 EFLAGS: 00000282
[ 5269.671521][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5269.671936][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5269.672350][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5269.672767][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 5269.673182][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 5269.673599][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5269.674065][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5269.674410][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5269.674829][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5269.675245][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5269.675658][    C3] PKRU: 55555554
[ 5269.675848][    C3] Call Trace:
[ 5269.676031][    C3]  <IRQ>
[ 5269.676184][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 5269.676468][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 5269.676732][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 5269.676993][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 5269.677290][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 5269.677531][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 5269.677810][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 5269.678091][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 5269.678359][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 5269.678656][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5269.678909][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 5269.679234][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5269.679518][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5269.679818][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5269.680095][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5269.680413][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5269.680687][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5269.681011][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5269.681320][    C3]  </IRQ>
[ 5269.681476][    C3]  <TASK>
[ 5269.681634][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5269.681959][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5269.682270][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5269.682579][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 5269.682818][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5269.683117][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5269.683442][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5269.683752][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5269.684012][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5269.684294][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5269.684592][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5269.684840][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5269.685089][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5269.685330][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5269.685573][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5269.685824][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5269.686139][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5269.686405][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5269.686752][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5269.687032][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5269.687337][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5269.687643][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5269.687942][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5269.688195][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5269.688458][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5269.688706][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5269.689034][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5269.689337][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5269.689662][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5269.689979][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5269.690239][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5269.690493][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5269.690748][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5269.691067][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5269.691317][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5269.691560][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5269.691895][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5269.692151][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5269.692506][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5269.692837][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5269.693134][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5269.693460][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5269.693709][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5269.693948][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5269.694244][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5269.694507][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5269.694756][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5269.695029][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5269.695293][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5269.695532][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5269.695819][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5269.696066][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5269.696318][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5269.696665][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5269.696936][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5269.697205][ C3] kthread (kernel/kthread.c:388) 
[ 5269.697424][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5269.697665][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5269.697902][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5269.698146][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5296.564897][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5296.565388][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5296.565885][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5296.566373][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5296.567351][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5296.567983][    C3] Workqueue: netns cleanup_net
[ 5296.568237][ C3] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 5296.568527][ C3] Code: 48 c7 c7 b0 c2 9e a9 5b 5d 41 5c e9 9a b3 9b ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 af ef ff ff 66 66 2e 0f 1f
All code
========
   0:	48 c7 c7 b0 c2 9e a9 	mov    $0xffffffffa99ec2b0,%rdi
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	e9 9a b3 9b ff       	jmp    0xffffffffff9bb3aa
  10:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  17:	00 00 00 
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 af ef ff ff       	jmp    0xffffffffffffefea
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 af ef ff ff       	jmp    0xffffffffffffefc0
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 5296.569530][    C3] RSP: 0018:ffffc9000051f4c8 EFLAGS: 00000206
[ 5296.569845][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5296.570262][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5296.570675][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5296.571089][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5296.571504][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5296.571923][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5296.572388][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5296.572735][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5296.573152][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5296.573567][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5296.573984][    C3] PKRU: 55555554
[ 5296.574173][    C3] Call Trace:
[ 5296.574349][    C3]  <IRQ>
[ 5296.574505][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5296.574779][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5296.575031][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5296.575322][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5296.575605][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5296.575909][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5296.576189][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5296.576506][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5296.576781][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5296.577102][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5296.577412][    C3]  </IRQ>
[ 5296.577568][    C3]  <TASK>
[ 5296.577725][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5296.578053][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5296.578362][ C3] ? __pfx___kasan_check_read (mm/kasan/shadow.c:30) 
[ 5296.578654][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5296.578947][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5296.579274][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5296.579582][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5296.579843][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5296.580128][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5296.580425][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5296.580674][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5296.580924][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5296.581168][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5296.581410][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5296.581663][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5296.581973][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5296.582240][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5296.582587][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5296.582867][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5296.583170][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5296.583479][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5296.583777][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5296.584029][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5296.584292][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5296.584541][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5296.584870][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5296.585172][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5296.585502][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5296.585823][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5296.586082][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5296.586337][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5296.586596][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5296.586919][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5296.587168][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5296.587415][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5296.587753][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5296.588007][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5296.588362][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5296.588696][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5296.588993][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5296.589318][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5296.589567][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5296.589805][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5296.590099][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5296.590362][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5296.590611][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5296.590884][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5296.591148][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5296.591390][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5296.591676][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5296.591921][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5296.592171][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5296.592519][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5296.592791][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5296.593062][ C3] kthread (kernel/kthread.c:388) 
[ 5296.593279][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5296.593522][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5296.593760][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5296.594006][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5324.564891][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5324.565381][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5324.565880][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5324.566366][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5324.567340][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5324.567971][    C3] Workqueue: netns cleanup_net
[ 5324.568224][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5324.568560][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5324.569564][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5324.569880][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5324.570303][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5324.570715][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5324.571130][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5324.571544][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5324.571962][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5324.572431][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5324.572778][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5324.573197][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5324.573612][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5324.574031][    C3] PKRU: 55555554
[ 5324.574220][    C3] Call Trace:
[ 5324.574398][    C3]  <IRQ>
[ 5324.574553][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5324.574828][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5324.575080][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5324.575373][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5324.575662][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5324.575965][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5324.576244][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5324.576560][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5324.576834][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5324.577158][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5324.577467][    C3]  </IRQ>
[ 5324.577623][    C3]  <TASK>
[ 5324.577782][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5324.578108][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5324.578417][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5324.578727][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5324.579052][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5324.579362][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5324.579622][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5324.579905][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5324.580205][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5324.580454][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5324.580705][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5324.580948][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5324.581191][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5324.581443][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5324.581752][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5324.582020][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5324.582367][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5324.582647][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5324.582952][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5324.583261][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5324.583561][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5324.583813][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5324.584077][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5324.584325][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5324.584655][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5324.584958][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5324.585287][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5324.585611][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5324.585872][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5324.586127][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5324.586384][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5324.586710][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5324.586961][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5324.587203][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5324.587540][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5324.587795][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5324.588149][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5324.588481][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5324.588778][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5324.589102][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5324.589353][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5324.589591][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5324.589887][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5324.590150][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5324.590402][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5324.590674][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5324.590938][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5324.591177][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5324.591466][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5324.591711][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5324.591961][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5324.592309][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5324.592579][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5324.592850][ C3] kthread (kernel/kthread.c:388) 
[ 5324.593069][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5324.593314][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5324.593552][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5324.593800][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5330.247247][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 1803045 jiffies s: 467069 root: 0x8/.
| [ 5330.247915][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5330.248294][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 5330.248576][    C3] NMI backtrace for cpu 3
[ 5330.248584][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5330.248586][    C3] Workqueue: netns cleanup_net
[ 5330.248592][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5330.248598][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 5330.248600][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 5330.248603][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5330.248604][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5330.248606][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5330.248608][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5330.248610][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5330.248611][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5330.248614][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5330.248617][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5330.248619][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5330.248620][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5330.248622][    C3] PKRU: 55555554
[ 5330.248623][    C3] Call Trace:
[ 5330.248625][    C3]  <NMI>
[ 5330.248628][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 5330.248633][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 5330.248637][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 5330.248641][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 5330.248645][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 5330.248648][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 5330.248652][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5330.248657][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5330.248660][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5330.248663][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5330.248666][    C3]  </NMI>
[ 5330.248666][    C3]  <TASK>
[ 5330.248670][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5330.248674][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5330.248678][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5330.248683][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5330.248688][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5330.248690][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5330.248694][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5330.248696][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5330.248701][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5330.248704][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5330.248708][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5330.248711][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5330.248716][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5330.248719][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5330.248723][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5330.248726][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5330.248731][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5330.248734][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5330.248740][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5330.248745][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5330.248749][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5330.248752][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5330.248760][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5330.248767][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5330.248772][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5330.248777][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5330.248781][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5330.248785][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5330.248789][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5330.248796][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5330.248800][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5330.248803][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5330.248808][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5330.248811][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5330.248815][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5330.248819][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5330.248822][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5330.248826][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5330.248829][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5330.248832][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5330.248835][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5330.248838][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5330.248841][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5330.248845][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5330.248849][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5330.248852][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5330.248857][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5330.248860][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5330.248863][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5330.248867][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5330.248870][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5330.248872][ C3] kthread (kernel/kthread.c:388) 
[ 5330.248874][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5330.248877][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5330.248880][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5330.248882][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5330.248889][    C3]  </TASK>
| [ 5347.702229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5347.702604][    C3] rcu: 3-....: (1818207 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=401154
| [ 5347.703185][    C3] rcu: (t=1820795 jiffies g=2723341 q=5640 ncpus=4)
[ 5347.704016][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5347.704649][    C3] Workqueue: netns cleanup_net
[ 5347.704904][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5347.705243][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5347.706249][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5347.706567][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5347.706977][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5347.707388][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5347.707799][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5347.708211][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5347.708623][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5347.709087][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5347.709431][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5347.709845][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5347.710258][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5347.710669][    C3] PKRU: 55555554
[ 5347.710857][    C3] Call Trace:
[ 5347.711033][    C3]  <IRQ>
[ 5347.711185][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 5347.711466][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 5347.711727][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 5347.711986][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 5347.712280][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 5347.712520][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 5347.712797][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 5347.713074][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 5347.713339][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 5347.713635][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5347.713887][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 5347.714208][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5347.714490][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5347.714784][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5347.715065][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5347.715383][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5347.715656][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5347.715976][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5347.716281][    C3]  </IRQ>
[ 5347.716436][    C3]  <TASK>
[ 5347.716590][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5347.716917][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5347.717227][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5347.717531][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5347.717851][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5347.718159][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5347.718425][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5347.718704][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5347.718998][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5347.719242][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5347.719491][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5347.719728][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5347.719965][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5347.720216][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5347.720522][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5347.720784][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5347.721125][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5347.721404][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5347.721704][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5347.722006][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5347.722304][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5347.722553][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5347.722820][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5347.723067][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5347.723393][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5347.723691][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5347.724013][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5347.724327][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5347.724582][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5347.724834][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5347.725085][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5347.725403][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5347.725656][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5347.725894][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5347.726225][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5347.726476][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5347.726828][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5347.727157][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5347.727451][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5347.727773][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5347.728023][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5347.728258][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5347.728554][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5347.728815][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5347.729061][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5347.729333][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5347.729596][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5347.729835][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5347.730118][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5347.730362][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5347.730612][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5347.730956][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5347.731225][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5347.731493][ C3] kthread (kernel/kthread.c:388) 
[ 5347.731708][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5347.731953][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5347.732188][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5347.732432][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5372.564914][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5372.565423][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5372.565920][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5372.566411][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5372.567412][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5372.568057][    C3] Workqueue: netns cleanup_net
[ 5372.568314][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5372.568654][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5372.569656][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5372.569973][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5372.570387][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5372.570798][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5372.571209][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5372.571625][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5372.572039][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5372.572505][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5372.572849][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5372.573267][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5372.573685][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5372.574104][    C3] PKRU: 55555554
[ 5372.574292][    C3] Call Trace:
[ 5372.574470][    C3]  <IRQ>
[ 5372.574624][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5372.574899][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5372.575154][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5372.575452][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5372.575736][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5372.576040][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5372.576315][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5372.576634][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5372.576906][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5372.577227][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5372.577532][    C3]  </IRQ>
[ 5372.577689][    C3]  <TASK>
[ 5372.577846][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5372.578173][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5372.578479][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5372.578786][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5372.579110][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5372.579419][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5372.579678][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5372.579961][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5372.580265][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5372.580522][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5372.580774][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5372.581015][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5372.581263][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5372.581516][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5372.581826][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5372.582092][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5372.582440][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5372.582724][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5372.583032][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5372.583340][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5372.583647][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5372.583908][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5372.584172][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5372.584427][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5372.584757][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5372.585058][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5372.585395][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5372.585714][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5372.585971][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5372.586226][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5372.586481][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5372.586803][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5372.587055][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5372.587294][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5372.587630][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5372.587884][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5372.588235][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5372.588565][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5372.588862][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5372.589185][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5372.589432][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5372.589670][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5372.589964][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5372.590225][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5372.590477][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5372.590747][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5372.591010][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5372.591252][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5372.591537][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5372.591783][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5372.592030][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5372.592377][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5372.592647][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5372.592917][ C3] kthread (kernel/kthread.c:388) 
[ 5372.593133][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5372.593378][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5372.593612][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5372.593856][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5400.564899][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5400.565398][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5400.565892][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5400.566383][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5400.567360][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5400.567995][    C3] Workqueue: netns cleanup_net
[ 5400.568249][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 5400.568520][ C3] Code: 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	41 57                	push   %r15
  1a:	41 56                	push   %r14
  1c:	41 55                	push   %r13
  1e:	41 54                	push   %r12
  20:	55                   	push   %rbp
  21:	53                   	push   %rbx
  22:	48 83 ec 70          	sub    $0x70,%rsp
  26:	9c                   	pushf
  27:	8f 04 24             	pop    (%rsp)
  2a:*	0f 01 ca             	clac		<-- trapping instruction
  2d:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  34:	1f 00 
  36:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3d:	85 c0                	test   %eax,%eax
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	0f 01 ca             	clac
   3:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   a:	1f 00 
   c:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  13:	85 c0                	test   %eax,%eax
  15:	0f                   	.byte 0xf
[ 5400.569522][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 5400.569840][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 5400.570254][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5400.570664][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 5400.571075][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5400.571489][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5400.571901][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5400.572365][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5400.572707][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5400.573123][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5400.573536][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5400.573947][    C3] PKRU: 55555554
[ 5400.574135][    C3] Call Trace:
[ 5400.574312][    C3]  <IRQ>
[ 5400.574465][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5400.574738][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5400.574992][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5400.575281][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5400.575562][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5400.575861][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5400.576135][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5400.576453][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5400.576725][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5400.577046][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5400.577349][    C3]  </IRQ>
[ 5400.577506][    C3]  <TASK>
[ 5400.577661][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5400.577987][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5400.578285][ C3] ? kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 5400.578528][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5400.578836][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5400.579140][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5400.579398][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5400.579689][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5400.580011][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5400.580319][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5400.580579][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5400.580861][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5400.581156][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5400.581403][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5400.581656][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5400.581896][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5400.582137][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5400.582390][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5400.582702][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5400.582969][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5400.583317][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5400.583597][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5400.583901][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5400.584208][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5400.584509][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5400.584759][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5400.585022][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5400.585275][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5400.585607][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5400.585908][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5400.586238][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5400.586557][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5400.586816][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5400.587073][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5400.587327][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5400.587648][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5400.587900][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5400.588143][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5400.588479][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5400.588732][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5400.589089][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5400.589421][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5400.589717][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5400.590045][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5400.590297][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5400.590533][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5400.590832][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5400.591098][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5400.591346][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5400.591619][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5400.591882][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5400.592126][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5400.592410][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5400.592656][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5400.592907][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5400.593254][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5400.593526][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5400.593797][ C3] kthread (kernel/kthread.c:388) 
[ 5400.594013][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5400.594259][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5400.594495][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5400.594740][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5400.595002][    C3]  </TASK>
| [ 5425.735230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5425.735611][    C3] rcu: 3-....: (1896149 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=418446
| [ 5425.736192][    C3] rcu: (t=1898828 jiffies g=2723341 q=5640 ncpus=4)
[ 5425.737034][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5425.737672][    C3] Workqueue: netns cleanup_net
[ 5425.737927][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5425.738208][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 5425.739216][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 5425.739539][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 5425.739955][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5425.740371][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5425.740788][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5425.741205][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 5425.741622][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5425.742089][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5425.742436][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5425.742852][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5425.743270][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5425.743686][    C3] PKRU: 55555554
[ 5425.743876][    C3] Call Trace:
[ 5425.744053][    C3]  <IRQ>
[ 5425.744209][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 5425.744494][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 5425.744759][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 5425.745023][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 5425.745324][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 5425.745566][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 5425.745846][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 5425.746127][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 5425.746394][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 5425.746693][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5425.746945][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 5425.747268][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5425.747554][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5425.747854][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5425.748130][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5425.748451][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5425.748723][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5425.749045][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5425.749353][    C3]  </IRQ>
[ 5425.749510][    C3]  <TASK>
[ 5425.749665][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5425.749994][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5425.750299][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5425.750599][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5425.750849][ C3] kasan_report (mm/kasan/report.c:585) 
[ 5425.751079][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5425.751389][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5425.751651][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5425.751943][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5425.752270][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5425.752580][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5425.752841][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5425.753125][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5425.753420][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5425.753669][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5425.753922][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5425.754160][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5425.754404][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5425.754659][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5425.754968][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5425.755238][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5425.755586][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5425.755867][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5425.756168][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5425.756477][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5425.756776][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5425.757029][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5425.757293][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5425.757544][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5425.757873][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5425.758173][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5425.758503][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5425.758822][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5425.759081][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5425.759336][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5425.759590][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5425.759912][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5425.760164][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5425.760403][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5425.760740][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5425.760993][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5425.761348][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5425.761677][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5425.761975][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5425.762301][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5425.762551][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5425.762787][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5425.763083][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5425.763345][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5425.763595][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5425.763866][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5425.764129][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5425.764372][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5425.764656][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5425.764902][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5425.765153][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5425.765501][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5425.765773][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5425.766044][ C3] kthread (kernel/kthread.c:388) 
[ 5425.766261][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5425.766506][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5425.766740][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5425.766985][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5428.551257][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 1901349 jiffies s: 467069 root: 0x8/.
| [ 5428.551911][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5428.552288][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 5428.552570][    C3] NMI backtrace for cpu 3
[ 5428.552583][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5428.552586][    C3] Workqueue: netns cleanup_net
[ 5428.552589][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5428.552593][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 5428.552596][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 5428.552598][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 5428.552600][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5428.552601][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5428.552603][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5428.552604][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 5428.552606][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5428.552608][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5428.552611][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5428.552613][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5428.552614][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5428.552616][    C3] PKRU: 55555554
[ 5428.552617][    C3] Call Trace:
[ 5428.552619][    C3]  <NMI>
[ 5428.552620][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 5428.552626][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 5428.552629][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 5428.552634][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 5428.552637][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 5428.552640][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 5428.552643][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5428.552648][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5428.552651][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5428.552654][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5428.552657][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5428.552660][    C3]  </NMI>
[ 5428.552661][    C3]  <TASK>
[ 5428.552662][ C3] kasan_report (mm/kasan/report.c:585) 
[ 5428.552665][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5428.552668][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 5428.552672][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5428.552676][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5428.552679][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5428.552684][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5428.552688][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5428.552690][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5428.552693][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5428.552696][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5428.552700][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5428.552703][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5428.552707][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5428.552710][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5428.552714][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5428.552717][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5428.552720][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5428.552724][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5428.552728][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5428.552732][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5428.552736][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5428.552740][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5428.552744][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5428.552746][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5428.552752][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5428.552759][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5428.552765][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5428.552770][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5428.552773][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5428.552777][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5428.552782][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5428.552789][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5428.552792][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5428.552796][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5428.552800][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5428.552802][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5428.552805][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5428.552810][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5428.552813][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5428.552816][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5428.552819][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5428.552821][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5428.552824][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5428.552827][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5428.552829][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5428.552833][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5428.552837][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5428.552840][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5428.552845][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5428.552848][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5428.552851][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5428.552855][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5428.552857][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5428.552860][ C3] kthread (kernel/kthread.c:388) 
[ 5428.552862][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5428.552864][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5428.552866][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5428.552868][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5452.564903][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5452.565403][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5452.565897][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5452.566393][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5452.567371][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5452.568008][    C3] Workqueue: netns cleanup_net
[ 5452.568263][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5452.568599][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5452.569603][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5452.569923][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5452.570336][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5452.570752][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5452.571164][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5452.571579][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5452.571991][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5452.572454][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5452.572797][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5452.573211][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5452.573625][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5452.574051][    C3] PKRU: 55555554
[ 5452.574240][    C3] Call Trace:
[ 5452.574418][    C3]  <IRQ>
[ 5452.574572][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5452.574844][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5452.575105][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5452.575393][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5452.575676][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5452.575980][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5452.576255][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5452.576575][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5452.576848][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5452.577171][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5452.577478][    C3]  </IRQ>
[ 5452.577636][    C3]  <TASK>
[ 5452.577792][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5452.578126][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5452.578435][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5452.578743][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5452.579069][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5452.579379][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5452.579639][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5452.579924][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5452.580220][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5452.580470][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5452.580722][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5452.580961][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5452.581204][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5452.581458][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5452.581766][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5452.582032][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5452.582381][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5452.582663][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5452.582965][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5452.583274][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5452.583573][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5452.583828][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5452.584090][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5452.584341][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5452.584672][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5452.584973][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5452.585307][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5452.585626][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5452.585886][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5452.586139][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5452.586395][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5452.586717][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5452.586968][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5452.587208][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5452.587543][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5452.587797][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5452.588151][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5452.588483][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5452.588782][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5452.589107][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5452.589357][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5452.589595][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5452.589891][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5452.590153][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5452.590403][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5452.590675][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5452.590939][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5452.591182][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5452.591467][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5452.591715][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5452.591963][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5452.592313][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5452.592584][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5452.592855][ C3] kthread (kernel/kthread.c:388) 
[ 5452.593071][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5452.593318][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5452.593552][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5452.593797][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5480.564909][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5480.565402][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5480.565900][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5480.566388][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5480.567366][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5480.567999][    C3] Workqueue: netns cleanup_net
[ 5480.568253][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 5480.568523][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 5480.569528][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 5480.569846][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 5480.570261][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5480.570673][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5480.571083][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 5480.571495][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 5480.571908][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5480.572370][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5480.572714][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5480.573128][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5480.573540][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5480.573954][    C3] PKRU: 55555554
[ 5480.574142][    C3] Call Trace:
[ 5480.574318][    C3]  <IRQ>
[ 5480.574474][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5480.574746][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5480.575002][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5480.575292][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5480.575575][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5480.575877][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5480.576154][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5480.576471][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5480.576743][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5480.577066][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5480.577375][    C3]  </IRQ>
[ 5480.577530][    C3]  <TASK>
[ 5480.577689][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5480.578014][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5480.578321][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5480.578630][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 5480.578871][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5480.579179][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5480.579476][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5480.579800][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5480.580110][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5480.580371][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5480.580653][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5480.580951][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5480.581199][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5480.581450][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5480.581694][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5480.581935][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5480.582188][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5480.582498][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5480.582764][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5480.583110][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5480.583389][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5480.583693][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5480.583999][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5480.584299][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5480.584551][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5480.584812][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5480.585067][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5480.585397][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5480.585697][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5480.586023][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5480.586345][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5480.586605][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5480.586860][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5480.587118][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5480.587437][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5480.587688][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5480.587931][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5480.588268][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5480.588521][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5480.588879][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5480.589209][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5480.589505][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5480.589831][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5480.590082][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5480.590316][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5480.590613][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5480.590876][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5480.591124][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5480.591398][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5480.591660][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5480.591902][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5480.592185][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5480.592432][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5480.592681][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5480.593029][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5480.593299][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5480.593569][ C3] kthread (kernel/kthread.c:388) 
[ 5480.593786][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5480.594032][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5480.594268][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5480.594511][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5480.594771][    C3]  </TASK>
| [ 5503.771229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5503.771607][    C3] rcu: 3-....: (1974067 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=435694
| [ 5503.772189][    C3] rcu: (t=1976864 jiffies g=2723341 q=5640 ncpus=4)
[ 5503.773021][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5503.773652][    C3] Workqueue: netns cleanup_net
[ 5503.773909][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5503.774181][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 5503.775183][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 5503.775501][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 5503.775913][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5503.776325][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 5503.776736][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5503.777150][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 5503.777562][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5503.778023][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5503.778367][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5503.778784][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5503.779199][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5503.779613][    C3] PKRU: 55555554
[ 5503.779801][    C3] Call Trace:
[ 5503.779979][    C3]  <IRQ>
[ 5503.780134][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 5503.780418][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 5503.780680][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 5503.780941][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 5503.781236][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 5503.781480][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 5503.781759][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 5503.782038][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 5503.782306][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 5503.782605][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5503.782858][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 5503.783182][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5503.783468][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5503.783766][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5503.784041][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5503.784360][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5503.784632][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5503.784958][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5503.785268][    C3]  </IRQ>
[ 5503.785423][    C3]  <TASK>
[ 5503.785579][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5503.785906][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5503.786214][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5503.786456][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5503.786716][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5503.787011][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5503.787337][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5503.787645][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5503.787904][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5503.788187][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5503.788486][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5503.788733][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5503.788988][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5503.789229][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5503.789469][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5503.789722][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5503.790034][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5503.790300][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5503.790646][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5503.790926][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5503.791230][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5503.791536][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5503.791839][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5503.792090][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5503.792353][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5503.792602][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5503.792932][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5503.793236][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5503.793563][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5503.793881][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5503.794140][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5503.794395][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5503.794651][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5503.794977][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5503.795226][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5503.795467][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5503.795802][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5503.796056][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5503.796411][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5503.796741][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5503.797035][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5503.797360][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5503.797610][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5503.797847][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5503.798143][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5503.798405][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5503.798655][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5503.798926][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5503.799190][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5503.799429][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5503.799715][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5503.799959][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5503.800212][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5503.800558][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5503.800827][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5503.801095][ C3] kthread (kernel/kthread.c:388) 
[ 5503.801313][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5503.801554][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5503.801791][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5503.802033][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5526.855256][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 1999653 jiffies s: 467069 root: 0x8/.
| [ 5526.856096][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5526.856573][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 5526.856928][    C3] NMI backtrace for cpu 3
[ 5526.856938][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5526.856941][    C3] Workqueue: netns cleanup_net
[ 5526.856948][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5526.856954][ C3] 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
All code
========
   0:	90                   	nop
   1:	66 0f 1f 00          	nopw   (%rax)
   5:	41 57                	push   %r15
   7:	41 56                	push   %r14
   9:	41 55                	push   %r13
   b:	41 54                	push   %r12
   d:	55                   	push   %rbp
   e:	53                   	push   %rbx
   f:	48 83 ec 70          	sub    $0x70,%rsp
  13:	9c                   	pushf
  14:	8f 04 24             	pop    (%rsp)
  17:	0f 01 ca             	clac
  1a:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  21:	1f 00 
  23:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 b7 00 00 00    	jne    0xe9
  32:	48 89 fd             	mov    %rdi,%rbp
  35:	49 89 f6             	mov    %rsi,%r14
  38:	89 d3                	mov    %edx,%ebx
  3a:	49 89 cd             	mov    %rcx,%r13
  3d:	e8                   	.byte 0xe8
  3e:	0f                   	.byte 0xf
  3f:	f7                   	.byte 0xf7

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 b7 00 00 00    	jne    0xbf
   8:	48 89 fd             	mov    %rdi,%rbp
   b:	49 89 f6             	mov    %rsi,%r14
   e:	89 d3                	mov    %edx,%ebx
  10:	49 89 cd             	mov    %rcx,%r13
  13:	e8                   	.byte 0xe8
  14:	0f                   	.byte 0xf
  15:	f7                   	.byte 0xf7
[ 5526.856957][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 5526.856959][    C3] RAX: 0000000000000000 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 5526.856961][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5526.856963][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 5526.856965][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5526.856966][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 5526.856968][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5526.856970][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5526.856973][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5526.856975][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5526.856976][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5526.856978][    C3] PKRU: 55555554
[ 5526.856979][    C3] Call Trace:
[ 5526.856981][    C3]  <NMI>
[ 5526.856985][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 5526.856991][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 5526.856995][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 5526.857000][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 5526.857005][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 5526.857007][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 5526.857012][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5526.857017][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5526.857020][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5526.857023][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5526.857026][    C3]  </NMI>
[ 5526.857027][    C3]  <TASK>
[ 5526.857029][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5526.857033][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5526.857038][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5526.857042][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5526.857046][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5526.857050][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5526.857056][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5526.857059][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5526.857062][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5526.857065][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5526.857070][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5526.857073][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5526.857078][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5526.857080][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5526.857085][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5526.857088][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5526.857091][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5526.857095][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5526.857100][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5526.857103][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5526.857109][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5526.857115][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5526.857119][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5526.857122][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5526.857131][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5526.857138][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5526.857143][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5526.857148][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5526.857152][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5526.857156][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5526.857160][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5526.857168][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5526.857172][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5526.857176][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5526.857182][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5526.857185][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5526.857188][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5526.857193][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5526.857196][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5526.857199][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5526.857203][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5526.857206][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5526.857208][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5526.857211][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5526.857214][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5526.857219][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5526.857223][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5526.857226][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5526.857232][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5526.857235][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5526.857238][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5526.857242][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5526.857245][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5526.857247][ C3] kthread (kernel/kthread.c:388) 
[ 5526.857251][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5526.857253][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5526.857256][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5526.857258][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5552.564917][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5552.565413][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5552.565906][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5552.566394][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5552.567370][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5552.568004][    C3] Workqueue: netns cleanup_net
[ 5552.568258][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5552.568593][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5552.569600][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5552.569917][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5552.570331][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5552.570744][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5552.571155][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5552.571570][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5552.571983][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5552.572447][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5552.572790][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5552.573203][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5552.573618][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5552.574031][    C3] PKRU: 55555554
[ 5552.574219][    C3] Call Trace:
[ 5552.574396][    C3]  <IRQ>
[ 5552.574555][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5552.574826][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5552.575079][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5552.575366][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5552.575647][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5552.575947][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5552.576222][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5552.576537][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5552.576811][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5552.577131][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5552.577437][    C3]  </IRQ>
[ 5552.577593][    C3]  <TASK>
[ 5552.577751][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5552.578080][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5552.578386][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5552.578696][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5552.579024][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5552.579332][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5552.579592][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5552.579877][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5552.580173][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5552.580425][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5552.580674][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5552.580915][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5552.581158][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5552.581411][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5552.581720][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5552.581987][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5552.582332][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5552.582616][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5552.582919][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5552.583227][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5552.583525][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5552.583778][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5552.584041][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5552.584291][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5552.584625][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5552.584930][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5552.585258][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5552.585576][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5552.585835][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5552.586090][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5552.586345][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5552.586667][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5552.586917][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5552.587158][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5552.587492][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5552.587746][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5552.588100][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5552.588430][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5552.588728][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5552.589052][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5552.589303][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5552.589545][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5552.589841][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5552.590103][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5552.590352][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5552.590623][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5552.590889][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5552.591131][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5552.591417][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5552.591662][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5552.591911][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5552.592260][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5552.592531][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5552.592802][ C3] kthread (kernel/kthread.c:388) 
[ 5552.593019][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5552.593264][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5552.593500][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5552.593745][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5580.564896][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5580.565385][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5580.565882][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5580.566369][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5580.567346][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5580.567978][    C3] Workqueue: netns cleanup_net
[ 5580.568232][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 5580.568504][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 5580.569516][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 5580.569837][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 5580.570255][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5580.570668][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5580.571082][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 5580.571495][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 5580.571911][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5580.572376][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5580.572721][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5580.573138][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5580.573553][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5580.573970][    C3] PKRU: 55555554
[ 5580.574159][    C3] Call Trace:
[ 5580.574335][    C3]  <IRQ>
[ 5580.574498][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5580.574776][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5580.575027][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5580.575318][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5580.575605][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5580.575907][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5580.576183][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5580.576499][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5580.576772][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5580.577096][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5580.577404][    C3]  </IRQ>
[ 5580.577559][    C3]  <TASK>
[ 5580.577716][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5580.578041][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5580.578350][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5580.578658][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 5580.578901][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5580.579199][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5580.579525][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5580.579833][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5580.580094][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5580.580376][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5580.580675][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5580.580924][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5580.581172][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5580.581414][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5580.581656][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5580.581906][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5580.582217][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5580.582482][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5580.582828][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5580.583108][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5580.583412][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5580.583718][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5580.584017][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5580.584270][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5580.584538][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5580.584786][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5580.585116][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5580.585418][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5580.585746][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5580.586063][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5580.586323][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5580.586578][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5580.586836][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5580.587157][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5580.587406][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5580.587649][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5580.587984][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5580.588239][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5580.588593][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5580.588924][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5580.589220][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5580.589544][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5580.589793][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5580.590031][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5580.590327][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5580.590590][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5580.590838][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5580.591111][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5580.591374][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5580.591613][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5580.591901][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5580.592144][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5580.592394][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5580.592740][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5580.593010][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5580.593280][ C3] kthread (kernel/kthread.c:388) 
[ 5580.593499][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5580.593741][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5580.593979][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5580.594222][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5580.594482][    C3]  </TASK>
| [ 5581.806229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5581.806582][    C3] rcu: 3-....: (2051986 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=452466
| [ 5581.807165][    C3] rcu: (t=2054899 jiffies g=2723341 q=5640 ncpus=4)
[ 5581.808001][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5581.808636][    C3] Workqueue: netns cleanup_net
[ 5581.808889][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5581.809226][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5581.810229][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5581.810548][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5581.810960][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5581.811371][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5581.811786][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5581.812198][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5581.812611][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5581.813073][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5581.813417][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5581.813835][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5581.814247][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5581.814665][    C3] PKRU: 55555554
[ 5581.814853][    C3] Call Trace:
[ 5581.815030][    C3]  <IRQ>
[ 5581.815181][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 5581.815462][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 5581.815723][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 5581.815982][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 5581.816279][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 5581.816518][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 5581.816795][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 5581.817076][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 5581.817341][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 5581.817636][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5581.817888][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 5581.818212][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5581.818494][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5581.818792][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5581.819067][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5581.819381][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5581.819652][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5581.819972][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5581.820280][    C3]  </IRQ>
[ 5581.820434][    C3]  <TASK>
[ 5581.820590][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5581.820913][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5581.821219][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5581.821525][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5581.821848][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5581.822154][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5581.822411][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5581.822690][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5581.822987][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5581.823234][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5581.823482][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5581.823723][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5581.823962][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5581.824212][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5581.824527][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5581.824791][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5581.825138][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5581.825420][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5581.825721][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5581.826024][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5581.826320][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5581.826568][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5581.826828][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5581.827072][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5581.827397][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5581.827695][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5581.828019][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5581.828332][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5581.828589][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5581.828841][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5581.829094][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5581.829409][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5581.829657][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5581.829896][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5581.830227][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5581.830479][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5581.830828][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5581.831155][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5581.831448][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5581.831770][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5581.832017][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5581.832252][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5581.832548][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5581.832810][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5581.833059][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5581.833330][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5581.833592][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5581.833829][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5581.834115][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5581.834364][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5581.834614][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5581.834960][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5581.835230][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5581.835499][ C3] kthread (kernel/kthread.c:388) 
[ 5581.835715][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5581.835957][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5581.836195][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5581.836437][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5608.564893][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5608.565383][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5608.565875][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5608.566367][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5608.567340][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5608.567971][    C3] Workqueue: netns cleanup_net
[ 5608.568224][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 5608.568494][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 5608.569494][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 5608.569812][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 5608.570223][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5608.570632][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5608.571044][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 5608.571456][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 5608.571866][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5608.572327][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5608.572668][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5608.573083][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5608.573495][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5608.573906][    C3] PKRU: 55555554
[ 5608.574093][    C3] Call Trace:
[ 5608.574274][    C3]  <IRQ>
[ 5608.574426][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5608.574696][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5608.574946][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5608.575232][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5608.575513][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5608.575810][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5608.576083][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5608.576398][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5608.576668][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5608.576986][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5608.577288][    C3]  </IRQ>
[ 5608.577445][    C3]  <TASK>
[ 5608.577600][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5608.577924][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5608.578231][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5608.578538][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 5608.578781][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5608.579088][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5608.579386][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5608.579711][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5608.580017][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5608.580277][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5608.580562][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5608.580859][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5608.581108][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5608.581358][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5608.581597][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5608.581838][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5608.582090][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5608.582397][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5608.582664][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5608.583007][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5608.583287][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5608.583589][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5608.583897][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5608.584193][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5608.584450][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5608.584713][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5608.584959][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5608.585285][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5608.585588][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5608.585916][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5608.586233][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5608.586491][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5608.586744][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5608.587000][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5608.587320][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5608.587569][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5608.587810][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5608.588143][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5608.588396][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5608.588749][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5608.589078][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5608.589374][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5608.589699][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5608.589948][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5608.590185][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5608.590480][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5608.590741][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5608.590990][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5608.591264][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5608.591528][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5608.591768][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5608.592053][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5608.592299][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5608.592546][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5608.592890][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5608.593164][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5608.593433][ C3] kthread (kernel/kthread.c:388) 
[ 5608.593650][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5608.593892][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5608.594127][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5608.594375][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5625.159251][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 2097957 jiffies s: 467069 root: 0x8/.
| [ 5625.159914][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5625.160293][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 5625.160573][    C3] NMI backtrace for cpu 3
[ 5625.160580][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5625.160582][    C3] Workqueue: netns cleanup_net
[ 5625.160586][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5625.160591][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 5625.160593][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 5625.160596][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 5625.160597][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5625.160599][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 5625.160601][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5625.160602][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5625.160604][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5625.160606][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5625.160609][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5625.160611][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5625.160612][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5625.160614][    C3] PKRU: 55555554
[ 5625.160615][    C3] Call Trace:
[ 5625.160617][    C3]  <NMI>
[ 5625.160619][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 5625.160624][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 5625.160627][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 5625.160632][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 5625.160636][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 5625.160638][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 5625.160642][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5625.160647][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5625.160650][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5625.160653][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5625.160656][    C3]  </NMI>
[ 5625.160656][    C3]  <TASK>
[ 5625.160660][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5625.160665][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5625.160669][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5625.160673][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5625.160677][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5625.160681][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5625.160683][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5625.160687][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5625.160689][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5625.160694][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5625.160697][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5625.160701][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5625.160703][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5625.160708][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5625.160711][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5625.160715][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5625.160718][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5625.160723][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5625.160726][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5625.160731][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5625.160736][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5625.160739][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5625.160742][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5625.160748][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5625.160755][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5625.160761][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5625.160766][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5625.160770][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5625.160774][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5625.160778][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5625.160786][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5625.160789][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5625.160792][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5625.160797][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5625.160800][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5625.160803][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5625.160807][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5625.160810][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5625.160813][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5625.160816][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5625.160819][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5625.160822][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5625.160825][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5625.160827][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5625.160831][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5625.160835][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5625.160838][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5625.160843][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5625.160846][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5625.160849][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5625.160853][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5625.160856][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5625.160858][ C3] kthread (kernel/kthread.c:388) 
[ 5625.160860][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5625.160862][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5625.160865][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5625.160867][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5652.564894][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5652.565383][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5652.565878][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5652.566367][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5652.567344][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5652.567975][    C3] Workqueue: netns cleanup_net
[ 5652.568228][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5652.568498][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 5652.569502][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 5652.569820][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 5652.570234][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5652.570649][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 5652.571062][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5652.571474][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 5652.571888][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5652.572352][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5652.572696][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5652.573111][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5652.573524][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5652.573939][    C3] PKRU: 55555554
[ 5652.574132][    C3] Call Trace:
[ 5652.574308][    C3]  <IRQ>
[ 5652.574462][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5652.574734][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5652.574986][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5652.575275][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5652.575557][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5652.575854][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5652.576129][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5652.576445][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5652.576717][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5652.577037][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5652.577344][    C3]  </IRQ>
[ 5652.577499][    C3]  <TASK>
[ 5652.577655][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5652.577980][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5652.578284][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5652.578528][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5652.578785][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5652.579080][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5652.579407][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5652.579715][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5652.579975][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5652.580258][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5652.580556][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5652.580804][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5652.581053][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5652.581295][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5652.581537][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5652.581789][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5652.582100][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5652.582366][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5652.582712][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5652.582992][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5652.583296][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5652.583604][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5652.583903][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5652.584159][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5652.584423][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5652.584671][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5652.585001][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5652.585304][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5652.585631][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5652.585947][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5652.586206][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5652.586461][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5652.586717][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5652.587038][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5652.587288][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5652.587529][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5652.587864][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5652.588118][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5652.588474][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5652.588804][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5652.589100][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5652.589425][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5652.589675][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5652.589912][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5652.590209][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5652.590471][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5652.590721][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5652.590993][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5652.591257][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5652.591498][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5652.591785][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5652.592030][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5652.592280][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5652.592625][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5652.592895][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5652.593164][ C3] kthread (kernel/kthread.c:388) 
[ 5652.593385][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5652.593627][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5652.593866][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5652.594112][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5652.594370][    C3]  </TASK>
| [ 5659.840229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5659.840594][    C3] rcu: 3-....: (2129904 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=468808
| [ 5659.841175][    C3] rcu: (t=2132933 jiffies g=2723341 q=5640 ncpus=4)
[ 5659.842006][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5659.842639][    C3] Workqueue: netns cleanup_net
[ 5659.842892][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 5659.843161][ C3] Code: 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 <44> 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb
All code
========
   0:	6c                   	insb   (%dx),%es:(%rdi)
   1:	24 30                	and    $0x30,%al
   3:	e8 7c f5 ff ff       	call   0xfffffffffffff584
   8:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
   d:	e8 92 fa ff ff       	call   0xfffffffffffffaa4
  12:	0f b6 d3             	movzbl %bl,%edx
  15:	48 89 ee             	mov    %rbp,%rsi
  18:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  1d:	e8 02 fd ff ff       	call   0xfffffffffffffd24
  22:	ff 34 24             	push   (%rsp)
  25:	9d                   	popf
  26:	48 83 c4 70          	add    $0x70,%rsp
  2a:*	44 89 e0             	mov    %r12d,%eax		<-- trapping instruction
  2d:	5b                   	pop    %rbx
  2e:	5d                   	pop    %rbp
  2f:	41 5c                	pop    %r12
  31:	41 5d                	pop    %r13
  33:	41 5e                	pop    %r14
  35:	41 5f                	pop    %r15
  37:	c3                   	ret
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	cc                   	int3
  3c:	45 31 e4             	xor    %r12d,%r12d
  3f:	eb                   	.byte 0xeb

Code starting with the faulting instruction
===========================================
   0:	44 89 e0             	mov    %r12d,%eax
   3:	5b                   	pop    %rbx
   4:	5d                   	pop    %rbp
   5:	41 5c                	pop    %r12
   7:	41 5d                	pop    %r13
   9:	41 5e                	pop    %r14
   b:	41 5f                	pop    %r15
   d:	c3                   	ret
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	cc                   	int3
  12:	45 31 e4             	xor    %r12d,%r12d
  15:	eb                   	.byte 0xeb
[ 5659.844166][    C3] RSP: 0018:ffffc9000051f498 EFLAGS: 00000282
[ 5659.844484][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 5659.844894][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5659.845304][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5659.845717][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 5659.846127][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 5659.846538][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5659.846998][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5659.847340][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5659.847754][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5659.848167][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5659.848578][    C3] PKRU: 55555554
[ 5659.848766][    C3] Call Trace:
[ 5659.848941][    C3]  <IRQ>
[ 5659.849092][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 5659.849373][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 5659.849633][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 5659.849891][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 5659.850189][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 5659.850427][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 5659.850705][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 5659.850984][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 5659.851249][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 5659.851542][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5659.851792][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 5659.852115][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5659.852397][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5659.852693][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5659.852968][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5659.853282][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5659.853552][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5659.853871][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5659.854184][    C3]  </IRQ>
[ 5659.854337][    C3]  <TASK>
[ 5659.854493][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5659.854817][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5659.855122][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5659.855426][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 5659.855663][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5659.855957][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5659.856279][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5659.856581][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5659.856837][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5659.857115][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5659.857410][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5659.857656][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5659.857903][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5659.858142][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5659.858380][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5659.858628][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5659.858935][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5659.859198][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5659.859543][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5659.859817][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5659.860119][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5659.860422][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5659.860717][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5659.860966][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5659.861226][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5659.861473][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5659.861800][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5659.862101][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5659.862428][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5659.862743][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5659.863000][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5659.863253][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5659.863506][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5659.863825][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5659.864077][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5659.864323][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5659.864655][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5659.864908][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5659.865260][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5659.865589][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5659.865883][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5659.866206][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5659.866454][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5659.866687][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5659.866982][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5659.867242][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5659.867490][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5659.867761][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5659.868024][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5659.868261][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5659.868547][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5659.868789][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5659.869037][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5659.869381][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5659.869651][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5659.869919][ C3] kthread (kernel/kthread.c:388) 
[ 5659.870136][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5659.870377][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5659.870612][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5659.870855][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5684.564929][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5684.565421][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5684.565912][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5684.566399][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5684.567375][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5684.568014][    C3] Workqueue: netns cleanup_net
[ 5684.568267][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5684.568540][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 5684.569548][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 5684.569867][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5684.570281][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5684.570695][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5684.571106][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5684.571521][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5684.571937][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5684.572402][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5684.572750][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5684.573167][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5684.573584][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5684.574012][    C3] PKRU: 55555554
[ 5684.574201][    C3] Call Trace:
[ 5684.574376][    C3]  <IRQ>
[ 5684.574532][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5684.574805][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5684.575060][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5684.575348][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5684.575631][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5684.575933][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5684.576212][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5684.576531][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5684.576802][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5684.577123][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5684.577431][    C3]  </IRQ>
[ 5684.577585][    C3]  <TASK>
[ 5684.577743][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5684.578072][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5684.578378][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5684.578620][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5684.578918][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5684.579216][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5684.579541][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5684.579846][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5684.580105][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5684.580388][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5684.580684][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5684.580932][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5684.581181][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5684.581424][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5684.581666][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5684.581918][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5684.582226][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5684.582491][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5684.582840][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5684.583121][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5684.583425][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5684.583734][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5684.584039][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5684.584292][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5684.584554][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5684.584802][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5684.585131][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5684.585434][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5684.585760][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5684.586075][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5684.586335][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5684.586590][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5684.586844][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5684.587166][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5684.587413][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5684.587655][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5684.587987][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5684.588240][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5684.588593][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5684.588921][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5684.589217][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5684.589541][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5684.589792][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5684.590028][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5684.590324][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5684.590589][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5684.590836][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5684.591107][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5684.591370][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5684.591610][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5684.591894][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5684.592136][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5684.592385][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5684.592729][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5684.593000][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5684.593272][ C3] kthread (kernel/kthread.c:388) 
[ 5684.593488][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5684.593729][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5684.593971][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5684.594215][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5712.564889][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5712.565380][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5712.565872][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5712.566361][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5712.567332][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5712.567963][    C3] Workqueue: netns cleanup_net
[ 5712.568217][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5712.568553][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5712.569557][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5712.569874][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5712.570287][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5712.570697][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5712.571109][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5712.571521][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5712.571932][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5712.572394][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5712.572739][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5712.573151][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5712.573562][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5712.573976][    C3] PKRU: 55555554
[ 5712.574164][    C3] Call Trace:
[ 5712.574340][    C3]  <IRQ>
[ 5712.574491][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5712.574761][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5712.575011][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5712.575298][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5712.575577][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5712.575874][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5712.576146][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5712.576461][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5712.576731][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5712.577050][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5712.577353][    C3]  </IRQ>
[ 5712.577508][    C3]  <TASK>
[ 5712.577663][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5712.577989][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5712.578293][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5712.578598][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5712.578920][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5712.579225][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5712.579483][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5712.579764][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5712.580057][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5712.580306][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5712.580556][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5712.580794][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5712.581036][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5712.581289][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5712.581598][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5712.581863][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5712.582209][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5712.582488][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5712.582787][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5712.583094][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5712.583392][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5712.583645][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5712.583913][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5712.584165][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5712.584492][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5712.584792][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5712.585118][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5712.585433][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5712.585690][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5712.585942][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5712.586196][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5712.586517][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5712.586766][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5712.587005][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5712.587340][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5712.587593][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5712.587945][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5712.588275][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5712.588573][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5712.588896][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5712.589143][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5712.589381][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5712.589674][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5712.589935][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5712.590184][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5712.590455][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5712.590717][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5712.590958][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5712.591242][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5712.591487][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5712.591732][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5712.592079][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5712.592349][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5712.592618][ C3] kthread (kernel/kthread.c:388) 
[ 5712.592833][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5712.593078][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5712.593310][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5712.593553][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5723.463260][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 2196261 jiffies s: 467069 root: 0x8/.
| [ 5723.464101][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5723.464580][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 5723.464937][    C3] NMI backtrace for cpu 3
[ 5723.464946][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5723.464948][    C3] Workqueue: netns cleanup_net
[ 5723.464953][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5723.464958][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 5723.464960][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 5723.464963][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 5723.464965][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5723.464966][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 5723.464968][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5723.464969][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 5723.464971][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5723.464973][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5723.464976][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5723.464978][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5723.464979][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5723.464981][    C3] PKRU: 55555554
[ 5723.464982][    C3] Call Trace:
[ 5723.464984][    C3]  <NMI>
[ 5723.464987][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 5723.464992][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 5723.464996][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 5723.465001][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 5723.465004][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 5723.465007][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 5723.465011][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5723.465015][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5723.465018][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5723.465022][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5723.465025][    C3]  </NMI>
[ 5723.465025][    C3]  <TASK>
[ 5723.465029][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5723.465034][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5723.465038][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5723.465042][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5723.465047][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5723.465051][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5723.465054][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5723.465058][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5723.465060][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5723.465065][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5723.465068][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5723.465072][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5723.465074][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5723.465079][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5723.465082][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5723.465086][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5723.465089][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5723.465094][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5723.465097][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5723.465103][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5723.465108][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5723.465112][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5723.465115][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5723.465122][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5723.465129][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5723.465134][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5723.465139][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5723.465143][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5723.465147][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5723.465152][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5723.465159][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5723.465163][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5723.465166][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5723.465171][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5723.465174][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5723.465177][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5723.465181][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5723.465184][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5723.465188][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5723.465191][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5723.465194][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5723.465197][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5723.465200][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5723.465202][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5723.465206][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5723.465210][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5723.465214][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5723.465218][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5723.465221][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5723.465224][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5723.465229][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5723.465233][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5723.465235][ C3] kthread (kernel/kthread.c:388) 
[ 5723.465237][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5723.465240][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5723.465243][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5723.465244][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5723.465251][    C3]  </TASK>
| [ 5737.875229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5737.875598][    C3] rcu: 3-....: (2207823 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=486286
| [ 5737.876179][    C3] rcu: (t=2210968 jiffies g=2723341 q=5640 ncpus=4)
[ 5737.877013][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5737.877643][    C3] Workqueue: netns cleanup_net
[ 5737.877897][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5737.878166][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 5737.879167][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 5737.879486][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5737.879898][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5737.880310][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5737.880722][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5737.881135][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 5737.881546][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5737.882007][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5737.882352][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5737.882767][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5737.883179][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5737.883594][    C3] PKRU: 55555554
[ 5737.883783][    C3] Call Trace:
[ 5737.883959][    C3]  <IRQ>
[ 5737.884110][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 5737.884393][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 5737.884654][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 5737.884914][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 5737.885212][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 5737.885449][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 5737.885727][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 5737.886007][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 5737.886272][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 5737.886566][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5737.886817][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 5737.887138][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5737.887420][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5737.887719][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5737.887994][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5737.888310][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5737.888582][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5737.888902][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5737.889210][    C3]  </IRQ>
[ 5737.889365][    C3]  <TASK>
[ 5737.889523][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5737.889849][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5737.890156][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5737.890398][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5737.890704][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5737.891000][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5737.891324][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5737.891631][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5737.891891][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5737.892174][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5737.892471][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5737.892718][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5737.892967][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5737.893205][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5737.893447][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5737.893702][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5737.894010][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5737.894275][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5737.894620][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5737.894900][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5737.895201][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5737.895509][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5737.895806][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5737.896057][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5737.896320][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5737.896567][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5737.896895][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5737.897197][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5737.897524][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5737.897838][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5737.898095][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5737.898350][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5737.898604][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5737.898924][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5737.899174][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5737.899416][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5737.899750][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5737.900003][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5737.900355][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5737.900685][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5737.900981][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5737.901306][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5737.901554][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5737.901790][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5737.902086][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5737.902347][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5737.902595][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5737.902866][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5737.903129][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5737.903369][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5737.903658][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5737.903901][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5737.904149][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5737.904495][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5737.904765][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5737.905034][ C3] kthread (kernel/kthread.c:388) 
[ 5737.905251][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5737.905494][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5737.905730][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5737.905975][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5764.564897][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5764.565385][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5764.565877][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5764.566364][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5764.567341][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5764.567974][    C3] Workqueue: netns cleanup_net
[ 5764.568228][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5764.568562][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5764.569563][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5764.569883][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5764.570297][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5764.570709][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5764.571121][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5764.571532][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5764.571945][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5764.572408][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5764.572753][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5764.573170][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5764.573585][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5764.573995][    C3] PKRU: 55555554
[ 5764.574183][    C3] Call Trace:
[ 5764.574360][    C3]  <IRQ>
[ 5764.574512][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5764.574783][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5764.575034][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5764.575321][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5764.575605][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5764.575902][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5764.576176][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5764.576493][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5764.576763][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5764.577084][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5764.577389][    C3]  </IRQ>
[ 5764.577548][    C3]  <TASK>
[ 5764.577703][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5764.578031][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5764.578339][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5764.578646][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5764.578970][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5764.579281][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5764.579539][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5764.579820][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5764.580117][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5764.580365][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5764.580615][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5764.580856][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5764.581097][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5764.581350][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5764.581659][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5764.581925][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5764.582271][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5764.582550][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5764.582851][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5764.583158][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5764.583460][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5764.583710][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5764.583971][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5764.584221][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5764.584549][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5764.584848][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5764.585175][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5764.585497][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5764.585756][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5764.586011][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5764.586264][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5764.586584][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5764.586834][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5764.587075][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5764.587410][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5764.587664][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5764.588019][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5764.588348][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5764.588643][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5764.588967][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5764.589217][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5764.589453][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5764.589749][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5764.590010][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5764.590257][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5764.590528][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5764.590792][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5764.591033][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5764.591317][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5764.591563][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5764.591816][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5764.592161][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5764.592432][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5764.592699][ C3] kthread (kernel/kthread.c:388) 
[ 5764.592915][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5764.593160][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5764.593394][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5764.593643][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5792.564907][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5792.565397][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5792.565893][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5792.566381][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5792.567357][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5792.567989][    C3] Workqueue: netns cleanup_net
[ 5792.568242][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5792.568577][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5792.569580][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5792.569898][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5792.570312][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5792.570727][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5792.571137][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5792.571548][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5792.571962][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5792.572422][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5792.572767][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5792.573180][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5792.573597][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5792.574008][    C3] PKRU: 55555554
[ 5792.574194][    C3] Call Trace:
[ 5792.574374][    C3]  <IRQ>
[ 5792.574525][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5792.574795][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5792.575048][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5792.575334][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5792.575617][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5792.575912][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5792.576184][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5792.576502][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5792.576771][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5792.577090][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5792.577396][    C3]  </IRQ>
[ 5792.577550][    C3]  <TASK>
[ 5792.577704][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5792.578030][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5792.578336][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5792.578640][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5792.578961][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5792.579267][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5792.579525][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5792.579804][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5792.580100][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5792.580344][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5792.580593][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5792.580831][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5792.581070][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5792.581323][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5792.581632][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5792.581899][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5792.582244][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5792.582526][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5792.582826][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5792.583131][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5792.583435][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5792.583688][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5792.583950][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5792.584199][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5792.584528][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5792.584828][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5792.585155][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5792.585474][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5792.585734][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5792.585988][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5792.586242][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5792.586561][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5792.586812][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5792.587053][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5792.587389][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5792.587641][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5792.587997][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5792.588328][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5792.588622][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5792.588947][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5792.589195][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5792.589429][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5792.589727][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5792.589990][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5792.590238][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5792.590511][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5792.590775][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5792.591014][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5792.591298][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5792.591544][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5792.591794][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5792.592141][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5792.592411][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5792.592680][ C3] kthread (kernel/kthread.c:388) 
[ 5792.592896][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5792.593141][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5792.593382][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5792.593624][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5792.593881][    C3]  </TASK>
| [ 5815.910229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5815.910594][    C3] rcu: 3-....: (2285768 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=503330
| [ 5815.911175][    C3] rcu: (t=2289003 jiffies g=2723341 q=5640 ncpus=4)
[ 5815.912008][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5815.912640][    C3] Workqueue: netns cleanup_net
[ 5815.912893][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5815.913172][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 5815.914174][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 5815.914493][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 5815.914903][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5815.915314][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5815.915726][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5815.916139][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 5815.916554][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5815.917015][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5815.917361][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5815.917778][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5815.918199][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5815.918613][    C3] PKRU: 55555554
[ 5815.918802][    C3] Call Trace:
[ 5815.918980][    C3]  <IRQ>
[ 5815.919132][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 5815.919415][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 5815.919677][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 5815.919938][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 5815.920237][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 5815.920477][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 5815.920756][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 5815.921037][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 5815.921303][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 5815.921602][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5815.921855][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 5815.922180][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5815.922464][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5815.922762][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5815.923039][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5815.923359][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5815.923630][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5815.923953][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5815.924262][    C3]  </IRQ>
[ 5815.924418][    C3]  <TASK>
[ 5815.924575][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5815.924899][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5815.925202][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5815.925501][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5815.925752][ C3] kasan_report (mm/kasan/report.c:585) 
[ 5815.925983][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5815.926284][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5815.926544][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5815.926837][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5815.927162][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5815.927470][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5815.927729][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5815.928012][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5815.928307][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5815.928556][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5815.928807][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5815.929046][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5815.929287][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5815.929540][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5815.929847][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5815.930112][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5815.930459][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5815.930738][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5815.931037][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5815.931345][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5815.931643][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5815.931892][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5815.932154][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5815.932404][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5815.932732][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5815.933031][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5815.933363][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5815.933679][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5815.933938][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5815.934191][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5815.934445][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5815.934766][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5815.935016][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5815.935255][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5815.935590][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5815.935841][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5815.936197][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5815.936526][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5815.936821][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5815.937145][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5815.937394][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5815.937628][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5815.937925][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5815.938187][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5815.938434][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5815.938705][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5815.938968][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5815.939210][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5815.939493][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5815.939739][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5815.939986][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5815.940332][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5815.940603][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5815.940873][ C3] kthread (kernel/kthread.c:388) 
[ 5815.941088][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5815.941333][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5815.941565][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5815.941811][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5821.767250][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 2294565 jiffies s: 467069 root: 0x8/.
| [ 5821.767913][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5821.768293][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 5821.768574][    C3] NMI backtrace for cpu 3
[ 5821.768581][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5821.768583][    C3] Workqueue: netns cleanup_net
[ 5821.768587][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 5821.768592][ C3] Code: ff fe 48 39 c7 77 23 44 89 c2 e8 57 e8 ff ff 83 f0 01 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd <4c> 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48
All code
========
   0:	ff                   	(bad)
   1:	fe 48 39             	decb   0x39(%rax)
   4:	c7                   	(bad)
   5:	77 23                	ja     0x2a
   7:	44 89 c2             	mov    %r8d,%edx
   a:	e8 57 e8 ff ff       	call   0xffffffffffffe866
   f:	83 f0 01             	xor    $0x1,%eax
  12:	5b                   	pop    %rbx
  13:	5d                   	pop    %rbp
  14:	41 5c                	pop    %r12
  16:	c3                   	ret
  17:	cc                   	int3
  18:	cc                   	int3
  19:	cc                   	int3
  1a:	cc                   	int3
  1b:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  22:	7f ff ff 
  25:	48 39 c7             	cmp    %rax,%rdi
  28:	76 dd                	jbe    0x7
  2a:*	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10		<-- trapping instruction
  2f:	48 89 fd             	mov    %rdi,%rbp
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4d 89 d1             	mov    %r10,%r9
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   5:	48 89 fd             	mov    %rdi,%rbp
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4d 89 d1             	mov    %r10,%r9
  15:	48                   	rex.W
[ 5821.768594][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000216
[ 5821.768596][    C3] RAX: ffff7fffffffffff RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 5821.768598][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5821.768600][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5821.768601][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5821.768603][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5821.768605][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5821.768607][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5821.768610][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5821.768612][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5821.768613][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5821.768615][    C3] PKRU: 55555554
[ 5821.768616][    C3] Call Trace:
[ 5821.768617][    C3]  <NMI>
[ 5821.768619][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 5821.768624][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 5821.768628][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 5821.768633][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 5821.768637][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 5821.768639][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 5821.768643][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5821.768648][ C3] ? kasan_check_range (mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 5821.768651][ C3] ? kasan_check_range (mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 5821.768655][ C3] ? kasan_check_range (mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 5821.768658][    C3]  </NMI>
[ 5821.768659][    C3]  <TASK>
[ 5821.768660][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5821.768664][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5821.768668][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5821.768672][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5821.768676][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5821.768679][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5821.768682][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5821.768684][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5821.768688][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5821.768691][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5821.768695][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5821.768697][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5821.768701][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5821.768704][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5821.768708][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5821.768711][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5821.768716][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5821.768719][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5821.768724][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5821.768728][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5821.768732][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5821.768734][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5821.768741][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5821.768748][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5821.768753][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5821.768758][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5821.768762][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5821.768766][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5821.768770][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5821.768777][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5821.768781][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5821.768784][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5821.768788][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5821.768792][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5821.768794][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5821.768799][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5821.768802][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5821.768805][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5821.768808][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5821.768811][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5821.768813][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5821.768817][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5821.768819][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5821.768822][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5821.768826][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5821.768830][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5821.768834][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5821.768837][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5821.768840][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5821.768844][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5821.768847][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5821.768849][ C3] kthread (kernel/kthread.c:388) 
[ 5821.768851][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5821.768853][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5821.768856][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5821.768858][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5848.564887][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5848.565376][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5848.565869][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5848.566353][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5848.567330][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5848.567961][    C3] Workqueue: netns cleanup_net
[ 5848.568213][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5848.568493][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 5848.569493][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 5848.569809][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 5848.570221][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5848.570633][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5848.571044][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5848.571456][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 5848.571869][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5848.572331][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5848.572673][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5848.573091][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5848.573505][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5848.573919][    C3] PKRU: 55555554
[ 5848.574107][    C3] Call Trace:
[ 5848.574281][    C3]  <IRQ>
[ 5848.574436][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5848.574706][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5848.574957][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5848.575248][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5848.575530][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5848.575829][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5848.576103][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5848.576417][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5848.576689][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5848.577008][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5848.577315][    C3]  </IRQ>
[ 5848.577469][    C3]  <TASK>
[ 5848.577626][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5848.577951][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5848.578251][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5848.578549][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 5848.578795][ C3] kasan_report (mm/kasan/report.c:585) 
[ 5848.579026][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5848.579324][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5848.579582][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5848.579873][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5848.580195][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5848.580503][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5848.580761][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5848.581043][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5848.581338][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5848.581582][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5848.581832][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5848.582072][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5848.582315][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5848.582566][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5848.582873][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5848.583142][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5848.583487][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5848.583764][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5848.584066][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5848.584370][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5848.584667][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5848.584915][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5848.585175][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5848.585423][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5848.585752][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5848.586050][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5848.586374][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5848.586691][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5848.586948][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5848.587201][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5848.587454][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5848.587771][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5848.588020][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5848.588260][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5848.588592][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5848.588843][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5848.589195][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5848.589523][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5848.589816][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5848.590139][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5848.590387][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5848.590620][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5848.590916][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5848.591176][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5848.591422][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5848.591693][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5848.591953][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5848.592194][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5848.592476][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5848.592723][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5848.592971][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5848.593324][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5848.593595][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5848.593864][ C3] kthread (kernel/kthread.c:388) 
[ 5848.594078][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5848.594324][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5848.594559][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5848.594801][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5876.564878][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5876.565368][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5876.565861][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5876.566348][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5876.567323][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5876.567957][    C3] Workqueue: netns cleanup_net
[ 5876.568208][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5876.568545][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5876.569550][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5876.569867][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5876.570281][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5876.570694][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5876.571105][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5876.571520][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5876.571933][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5876.572394][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5876.572738][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5876.573155][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5876.573567][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5876.573979][    C3] PKRU: 55555554
[ 5876.574167][    C3] Call Trace:
[ 5876.574342][    C3]  <IRQ>
[ 5876.574495][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5876.574766][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5876.575017][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5876.575304][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5876.575585][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5876.575883][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5876.576158][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5876.576472][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5876.576743][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5876.577060][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5876.577366][    C3]  </IRQ>
[ 5876.577520][    C3]  <TASK>
[ 5876.577677][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5876.578003][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5876.578307][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5876.578614][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5876.578936][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5876.579241][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5876.579498][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5876.579779][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5876.580074][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5876.580321][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5876.580567][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5876.580807][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5876.581047][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5876.581296][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5876.581603][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5876.581866][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5876.582208][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5876.582489][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5876.582789][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5876.583097][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5876.583392][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5876.583641][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5876.583901][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5876.584147][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5876.584470][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5876.584770][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5876.585094][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5876.585404][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5876.585661][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5876.585914][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5876.586166][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5876.586484][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5876.586729][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5876.586969][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5876.587301][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5876.587553][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5876.587902][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5876.588228][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5876.588520][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5876.588840][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5876.589088][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5876.589325][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5876.589616][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5876.589878][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5876.590123][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5876.590393][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5876.590654][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5876.590893][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5876.591177][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5876.591419][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5876.591666][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5876.592011][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5876.592281][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5876.592550][ C3] kthread (kernel/kthread.c:388) 
[ 5876.592767][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5876.593012][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5876.593248][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5876.593493][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5876.593749][    C3]  </TASK>
| [ 5893.946229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5893.946588][    C3] rcu: 3-....: (2363688 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=521196
| [ 5893.947168][    C3] rcu: (t=2367039 jiffies g=2723341 q=5640 ncpus=4)
[ 5893.948002][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5893.948630][    C3] Workqueue: netns cleanup_net
[ 5893.948884][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 5893.949155][ C3] Code: 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 44 89 e0 5b <5d> 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb e1 0f 1f 00
All code
========
   0:	7c f5                	jl     0xfffffffffffffff7
   2:	ff                   	(bad)
   3:	ff 48 8d             	decl   -0x73(%rax)
   6:	7c 24                	jl     0x2c
   8:	10 e8                	adc    %ch,%al
   a:	92                   	xchg   %eax,%edx
   b:	fa                   	cli
   c:	ff                   	(bad)
   d:	ff 0f                	decl   (%rdi)
   f:	b6 d3                	mov    $0xd3,%dh
  11:	48 89 ee             	mov    %rbp,%rsi
  14:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  19:	e8 02 fd ff ff       	call   0xfffffffffffffd20
  1e:	ff 34 24             	push   (%rsp)
  21:	9d                   	popf
  22:	48 83 c4 70          	add    $0x70,%rsp
  26:	44 89 e0             	mov    %r12d,%eax
  29:	5b                   	pop    %rbx
  2a:*	5d                   	pop    %rbp		<-- trapping instruction
  2b:	41 5c                	pop    %r12
  2d:	41 5d                	pop    %r13
  2f:	41 5e                	pop    %r14
  31:	41 5f                	pop    %r15
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	45 31 e4             	xor    %r12d,%r12d
  3b:	eb e1                	jmp    0x1e
  3d:	0f 1f 00             	nopl   (%rax)

Code starting with the faulting instruction
===========================================
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	41 5d                	pop    %r13
   5:	41 5e                	pop    %r14
   7:	41 5f                	pop    %r15
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	45 31 e4             	xor    %r12d,%r12d
  11:	eb e1                	jmp    0xfffffffffffffff4
  13:	0f 1f 00             	nopl   (%rax)
[ 5893.950156][    C3] RSP: 0018:ffffc9000051f4a0 EFLAGS: 00000282
[ 5893.950475][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5893.950885][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5893.951302][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5893.951716][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 5893.952129][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 5893.952542][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5893.953010][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5893.953357][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5893.953775][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5893.954188][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5893.954601][    C3] PKRU: 55555554
[ 5893.954790][    C3] Call Trace:
[ 5893.954967][    C3]  <IRQ>
[ 5893.955119][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 5893.955401][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 5893.955663][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 5893.955923][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 5893.956223][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 5893.956461][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 5893.956741][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 5893.957022][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 5893.957288][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 5893.957581][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5893.957833][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 5893.958160][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5893.958442][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5893.958742][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5893.959016][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5893.959332][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5893.959604][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5893.959924][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5893.960232][    C3]  </IRQ>
[ 5893.960387][    C3]  <TASK>
[ 5893.960545][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5893.960868][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5893.961174][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5893.961483][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 5893.961724][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5893.962021][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5893.962345][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5893.962651][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5893.962914][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5893.963198][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5893.963494][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5893.963742][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5893.963991][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5893.964230][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5893.964471][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5893.964723][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5893.965030][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5893.965294][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5893.965640][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5893.965921][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5893.966223][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5893.966532][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5893.966828][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5893.967078][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5893.967341][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5893.967590][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5893.967917][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5893.968219][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5893.968545][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5893.968860][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5893.969117][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5893.969372][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5893.969625][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5893.969946][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5893.970194][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5893.970434][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5893.970766][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5893.971019][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5893.971372][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5893.971701][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5893.971996][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5893.972322][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5893.972569][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5893.972812][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5893.973107][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5893.973368][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5893.973616][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5893.973887][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5893.974151][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5893.974391][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5893.974676][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5893.974918][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5893.975168][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5893.975514][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5893.975784][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5893.976054][ C3] kthread (kernel/kthread.c:388) 
[ 5893.976269][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5893.976512][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5893.976748][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5893.976992][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5920.071250][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 2392869 jiffies s: 467069 root: 0x8/.
| [ 5920.071910][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5920.072286][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 5920.072567][    C3] NMI backtrace for cpu 3
[ 5920.072575][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5920.072577][    C3] Workqueue: netns cleanup_net
[ 5920.072582][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5920.072587][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5920.072590][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5920.072592][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5920.072593][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5920.072595][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5920.072597][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5920.072598][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5920.072600][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5920.072601][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5920.072605][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5920.072607][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5920.072608][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5920.072610][    C3] PKRU: 55555554
[ 5920.072611][    C3] Call Trace:
[ 5920.072613][    C3]  <NMI>
[ 5920.072615][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 5920.072620][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 5920.072624][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 5920.072629][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 5920.072632][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 5920.072635][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 5920.072639][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5920.072642][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5920.072646][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5920.072649][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5920.072652][    C3]  </NMI>
[ 5920.072653][    C3]  <TASK>
[ 5920.072655][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5920.072659][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5920.072668][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5920.072672][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5920.072675][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5920.072678][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5920.072680][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5920.072685][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5920.072688][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5920.072692][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5920.072694][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5920.072699][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5920.072702][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5920.072706][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5920.072709][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5920.072714][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5920.072717][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5920.072723][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5920.072728][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5920.072731][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5920.072733][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5920.072740][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5920.072747][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5920.072753][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5920.072757][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5920.072761][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5920.072765][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5920.072769][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5920.072776][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5920.072779][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5920.072783][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5920.072788][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5920.072791][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5920.072794][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5920.072798][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5920.072801][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5920.072805][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5920.072807][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5920.072810][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5920.072813][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5920.072816][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5920.072818][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5920.072823][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5920.072827][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5920.072830][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5920.072834][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5920.072838][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5920.072841][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5920.072845][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5920.072848][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5920.072850][ C3] kthread (kernel/kthread.c:388) 
[ 5920.072852][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5920.072855][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5920.072857][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5920.072859][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5944.564897][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5944.565390][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5944.565883][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5944.566369][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5944.567346][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5944.567978][    C3] Workqueue: netns cleanup_net
[ 5944.568232][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5944.568568][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 5944.569573][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 5944.569889][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5944.570302][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5944.570712][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5944.571123][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5944.571536][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5944.571949][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5944.572410][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5944.572759][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5944.573171][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5944.573587][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5944.574000][    C3] PKRU: 55555554
[ 5944.574189][    C3] Call Trace:
[ 5944.574363][    C3]  <IRQ>
[ 5944.574520][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5944.574793][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5944.575046][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5944.575334][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5944.575616][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5944.575916][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5944.576191][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5944.576507][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5944.576780][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5944.577098][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5944.577409][    C3]  </IRQ>
[ 5944.577564][    C3]  <TASK>
[ 5944.577722][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5944.578051][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5944.578356][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 5944.578663][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5944.578989][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5944.579295][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5944.579555][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5944.579839][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5944.580135][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5944.580385][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5944.580633][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5944.580873][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5944.581114][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5944.581366][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5944.581674][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5944.581937][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5944.582283][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5944.582567][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5944.582869][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5944.583174][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5944.583472][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5944.583724][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5944.583986][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5944.584235][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5944.584563][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5944.584864][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5944.585192][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5944.585507][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5944.585764][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5944.586017][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5944.586272][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5944.586592][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5944.586840][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5944.587081][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5944.587415][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5944.587668][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5944.588021][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5944.588350][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5944.588646][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5944.588968][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5944.589217][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5944.589455][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5944.589749][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5944.590011][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5944.590257][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5944.590529][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5944.590793][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5944.591033][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5944.591319][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5944.591562][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5944.591809][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5944.592153][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5944.592423][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5944.592696][ C3] kthread (kernel/kthread.c:388) 
[ 5944.592912][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5944.593155][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5944.593390][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5944.593633][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5944.593890][    C3]  </TASK>
| [ 5971.981229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5971.981596][    C3] rcu: 3-....: (2441639 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=537824
| [ 5971.982177][    C3] rcu: (t=2445074 jiffies g=2723341 q=5640 ncpus=4)
[ 5971.983014][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5971.983644][    C3] Workqueue: netns cleanup_net
[ 5971.983898][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 5971.984167][ C3] Code: 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	41 57                	push   %r15
  1a:	41 56                	push   %r14
  1c:	41 55                	push   %r13
  1e:	41 54                	push   %r12
  20:	55                   	push   %rbp
  21:	53                   	push   %rbx
  22:	48 83 ec 70          	sub    $0x70,%rsp
  26:	9c                   	pushf
  27:	8f 04 24             	pop    (%rsp)
  2a:*	0f 01 ca             	clac		<-- trapping instruction
  2d:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  34:	1f 00 
  36:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3d:	85 c0                	test   %eax,%eax
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	0f 01 ca             	clac
   3:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   a:	1f 00 
   c:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  13:	85 c0                	test   %eax,%eax
  15:	0f                   	.byte 0xf
[ 5971.985163][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 5971.985480][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 5971.985890][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5971.986298][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 5971.986710][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5971.987120][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5971.987529][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5971.987987][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5971.988331][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5971.988745][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5971.989155][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5971.989565][    C3] PKRU: 55555554
[ 5971.989751][    C3] Call Trace:
[ 5971.989927][    C3]  <IRQ>
[ 5971.990079][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 5971.990359][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 5971.990618][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 5971.990876][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 5971.991171][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 5971.991408][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 5971.991684][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 5971.991965][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 5971.992229][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 5971.992526][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5971.992775][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 5971.993097][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5971.993377][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5971.993673][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5971.993947][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5971.994260][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5971.994529][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5971.994848][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5971.995154][    C3]  </IRQ>
[ 5971.995307][    C3]  <TASK>
[ 5971.995463][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5971.995787][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5971.996092][ C3] ? kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 5971.996330][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5971.996627][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 5971.996866][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5971.997159][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5971.997480][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5971.997786][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5971.998043][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5971.998324][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5971.998616][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5971.998862][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5971.999110][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5971.999347][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5971.999586][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5971.999836][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5972.000140][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5972.000405][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5972.000748][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5972.001023][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5972.001320][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5972.001624][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5972.001919][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5972.002166][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5972.002431][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5972.002677][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5972.003002][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5972.003296][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5972.003619][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5972.003931][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5972.004186][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5972.004437][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5972.004688][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5972.005005][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5972.005252][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5972.005489][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5972.005819][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5972.006069][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5972.006421][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5972.006746][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5972.007039][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5972.007360][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5972.007606][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5972.007838][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5972.008131][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5972.008390][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5972.008636][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5972.008904][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5972.009164][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5972.009404][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5972.009683][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5972.009925][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5972.010172][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5972.010522][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5972.010788][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5972.011055][ C3] kthread (kernel/kthread.c:388) 
[ 5972.011268][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5972.011509][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5972.011739][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5972.011981][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 5996.564875][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 5996.565364][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 5996.565856][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 5996.566341][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 5996.567316][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 5996.567948][    C3] Workqueue: netns cleanup_net
[ 5996.568199][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5996.568469][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 5996.569472][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 5996.569788][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 5996.570202][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 5996.570613][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 5996.571023][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 5996.571435][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 5996.571847][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 5996.572313][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5996.572656][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 5996.573069][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5996.573482][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5996.573894][    C3] PKRU: 55555554
[ 5996.574083][    C3] Call Trace:
[ 5996.574258][    C3]  <IRQ>
[ 5996.574412][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 5996.574687][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 5996.574938][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 5996.575225][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 5996.575508][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 5996.575808][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 5996.576082][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 5996.576398][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 5996.576671][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 5996.576989][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 5996.577297][    C3]  </IRQ>
[ 5996.577452][    C3]  <TASK>
[ 5996.577610][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 5996.577936][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5996.578234][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 5996.578478][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 5996.578737][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 5996.579028][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 5996.579353][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 5996.579661][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5996.579918][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5996.580204][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 5996.580499][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5996.580747][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5996.580996][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 5996.581235][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 5996.581477][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 5996.581730][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5996.582036][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 5996.582305][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5996.582649][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 5996.582929][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 5996.583230][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5996.583536][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 5996.583833][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 5996.584086][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 5996.584348][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 5996.584596][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 5996.584923][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 5996.585223][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 5996.585551][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 5996.585865][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 5996.586122][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 5996.586376][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 5996.586630][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 5996.586948][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 5996.587197][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 5996.587438][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 5996.587772][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 5996.588025][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 5996.588377][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 5996.588705][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 5996.589001][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 5996.589328][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 5996.589574][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 5996.589810][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 5996.590103][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 5996.590364][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 5996.590610][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 5996.590880][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 5996.591142][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 5996.591382][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 5996.591665][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 5996.591908][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 5996.592154][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 5996.592503][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5996.592772][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 5996.593041][ C3] kthread (kernel/kthread.c:388) 
[ 5996.593256][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5996.593499][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 5996.593734][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 5996.593977][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6018.375248][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 2491173 jiffies s: 467069 root: 0x8/.
| [ 6018.375918][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6018.376296][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 6018.376581][    C3] NMI backtrace for cpu 3
[ 6018.376590][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6018.376592][    C3] Workqueue: netns cleanup_net
[ 6018.376597][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6018.376602][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 6018.376604][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 6018.376606][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 6018.376608][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6018.376610][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6018.376611][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6018.376613][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 6018.376615][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6018.376617][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6018.376621][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6018.376623][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6018.376624][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6018.376626][    C3] PKRU: 55555554
[ 6018.376627][    C3] Call Trace:
[ 6018.376629][    C3]  <NMI>
[ 6018.376631][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 6018.376636][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 6018.376640][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 6018.376645][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 6018.376649][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 6018.376652][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 6018.376655][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6018.376660][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6018.376664][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6018.376667][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6018.376670][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6018.376673][    C3]  </NMI>
[ 6018.376674][    C3]  <TASK>
[ 6018.376675][ C3] kasan_report (mm/kasan/report.c:585) 
[ 6018.376680][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6018.376684][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6018.376687][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6018.376692][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6018.376697][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6018.376699][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6018.376703][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6018.376705][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6018.376710][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6018.376713][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6018.376717][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6018.376719][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6018.376725][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6018.376727][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6018.376731][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6018.376735][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6018.376739][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6018.376742][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6018.376748][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6018.376753][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6018.376757][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6018.376761][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6018.376768][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6018.376775][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6018.376780][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6018.376785][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6018.376789][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6018.376793][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6018.376797][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6018.376805][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6018.376808][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6018.376812][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6018.376817][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6018.376821][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6018.376823][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6018.376828][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6018.376831][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6018.376834][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6018.376838][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6018.376841][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6018.376843][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6018.376847][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6018.376849][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6018.376854][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6018.376858][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6018.376861][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6018.376866][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6018.376869][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6018.376872][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6018.376876][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6018.376878][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6018.376881][ C3] kthread (kernel/kthread.c:388) 
[ 6018.376883][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6018.376885][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6018.376888][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6018.376890][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6044.564889][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6044.565385][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6044.565877][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6044.566366][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6044.567342][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6044.567974][    C3] Workqueue: netns cleanup_net
[ 6044.568227][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:130) 
[ 6044.568501][ C3] Code: ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 <83> e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 0f 93 c0 c3 cc cc cc
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	ff 66 66             	jmp    *0x66(%rsi)
   5:	2e 0f 1f 84 00 00 00 	cs nopl 0x0(%rax,%rax,1)
   c:	00 00 
   e:	66 90                	xchg   %ax,%ax
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9e0
  27:	48 d1 e8             	shr    %rax
  2a:*	83 e0 01             	and    $0x1,%eax		<-- trapping instruction
  2d:	75 0d                	jne    0x3c
  2f:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9e0
  36:	a4 05 00 
  39:	0f 93 c0             	setae  %al
  3c:	c3                   	ret
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	83 e0 01             	and    $0x1,%eax
   3:	75 0d                	jne    0x12
   5:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9b6
   c:	a4 05 00 
   f:	0f 93 c0             	setae  %al
  12:	c3                   	ret
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 6044.569500][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 6044.569817][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 6044.570228][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6044.570638][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6044.571048][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6044.571461][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 6044.571872][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6044.572337][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6044.572679][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6044.573091][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6044.573505][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6044.573914][    C3] PKRU: 55555554
[ 6044.574101][    C3] Call Trace:
[ 6044.574277][    C3]  <IRQ>
[ 6044.574430][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6044.574701][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6044.574954][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6044.575240][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6044.575521][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6044.575819][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6044.576093][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6044.576410][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6044.576681][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6044.577000][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6044.577304][    C3]  </IRQ>
[ 6044.577459][    C3]  <TASK>
[ 6044.577615][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6044.577940][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6044.578244][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6044.578551][ C3] ? report_enabled (mm/kasan/report.c:130) 
[ 6044.578795][ C3] kasan_report (mm/kasan/report.c:585) 
[ 6044.579023][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6044.579318][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6044.579640][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6044.579946][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6044.580203][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6044.580483][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6044.580778][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6044.581023][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6044.581272][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6044.581511][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6044.581749][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6044.582000][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6044.582311][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6044.582576][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6044.582919][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6044.583196][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6044.583497][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6044.583800][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6044.584098][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6044.584347][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6044.584607][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6044.584853][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6044.585179][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6044.585476][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6044.585799][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6044.586115][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6044.586372][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6044.586626][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6044.586880][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6044.587195][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6044.587445][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6044.587685][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6044.588022][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6044.588274][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6044.588623][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6044.588954][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6044.589247][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6044.589569][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6044.589821][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6044.590055][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6044.590349][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6044.590611][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6044.590858][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6044.591129][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6044.591392][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6044.591631][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6044.591914][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6044.592162][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6044.592410][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6044.592755][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6044.593024][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6044.593293][ C3] kthread (kernel/kthread.c:388) 
[ 6044.593508][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6044.593751][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6044.593990][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6044.594230][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6044.594487][    C3]  </TASK>
| [ 6050.016229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6050.016586][    C3] rcu: 3-....: (2519557 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=555230
| [ 6050.017164][    C3] rcu: (t=2523109 jiffies g=2723341 q=5640 ncpus=4)
[ 6050.017998][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6050.018632][    C3] Workqueue: netns cleanup_net
[ 6050.018885][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 6050.019182][ C3] Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 <44> 0f b6 c2 48 01 f0 55 53 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	66 0f 1f 00          	nopw   (%rax)
  1c:	48 85 f6             	test   %rsi,%rsi
  1f:	0f 84 5e 01 00 00    	je     0x183
  25:	48 89 f8             	mov    %rdi,%rax
  28:	41 54                	push   %r12
  2a:*	44 0f b6 c2          	movzbl %dl,%r8d		<-- trapping instruction
  2e:	48 01 f0             	add    %rsi,%rax
  31:	55                   	push   %rbp
  32:	53                   	push   %rbx
  33:	72 14                	jb     0x49
  35:	eb 26                	jmp    0x5d
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	48                   	rex.W
  3b:	b8 ff ff ff ff       	mov    $0xffffffff,%eax

Code starting with the faulting instruction
===========================================
   0:	44 0f b6 c2          	movzbl %dl,%r8d
   4:	48 01 f0             	add    %rsi,%rax
   7:	55                   	push   %rbp
   8:	53                   	push   %rbx
   9:	72 14                	jb     0x1f
   b:	eb 26                	jmp    0x33
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	48                   	rex.W
  11:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
[ 6050.020185][    C3] RSP: 0018:ffffc9000051f4c0 EFLAGS: 00000202
[ 6050.020504][    C3] RAX: ffff888022f2b208 RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 6050.020915][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6050.021327][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6050.021743][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6050.022160][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6050.022574][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6050.023035][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6050.023379][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6050.023801][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6050.024214][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6050.024628][    C3] PKRU: 55555554
[ 6050.024817][    C3] Call Trace:
[ 6050.024993][    C3]  <IRQ>
[ 6050.025145][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 6050.025429][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 6050.025691][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 6050.025951][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 6050.026249][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 6050.026487][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 6050.026764][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 6050.027044][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 6050.027309][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 6050.027604][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6050.027855][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 6050.028180][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6050.028461][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6050.028760][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6050.029035][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6050.029349][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6050.029620][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6050.029941][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6050.030248][    C3]  </IRQ>
[ 6050.030402][    C3]  <TASK>
[ 6050.030559][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6050.030884][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6050.031185][ C3] ? kasan_check_range (mm/kasan/generic.c:188) 
[ 6050.031451][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6050.031741][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6050.032073][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6050.032381][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6050.032640][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6050.032922][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6050.033215][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6050.033463][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6050.033713][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6050.033952][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6050.034191][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6050.034443][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6050.034749][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6050.035014][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6050.035361][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6050.035639][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6050.035940][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6050.036246][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6050.036542][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6050.036791][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6050.037053][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6050.037302][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6050.037629][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6050.037927][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6050.038256][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6050.038573][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6050.038831][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6050.039083][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6050.039336][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6050.039655][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6050.039904][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6050.040143][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6050.040478][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6050.040729][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6050.041083][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6050.041413][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6050.041707][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6050.042035][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6050.042283][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6050.042520][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6050.042816][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6050.043078][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6050.043323][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6050.043595][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6050.043858][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6050.044100][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6050.044382][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6050.044628][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6050.044876][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6050.045221][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6050.045490][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6050.045760][ C3] kthread (kernel/kthread.c:388) 
[ 6050.045973][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6050.046217][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6050.046450][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6050.046693][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6076.564884][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6076.565372][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6076.565867][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6076.566355][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6076.567333][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6076.567962][    C3] Workqueue: netns cleanup_net
[ 6076.568215][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 6076.568485][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 6076.569488][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 6076.569806][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 6076.570216][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6076.570631][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6076.571044][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 6076.571454][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 6076.571866][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6076.572334][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6076.572682][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6076.573098][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6076.573510][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6076.573922][    C3] PKRU: 55555554
[ 6076.574108][    C3] Call Trace:
[ 6076.574286][    C3]  <IRQ>
[ 6076.574437][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6076.574709][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6076.574960][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6076.575249][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6076.575532][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6076.575828][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6076.576102][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6076.576418][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6076.576689][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6076.577009][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6076.577315][    C3]  </IRQ>
[ 6076.577470][    C3]  <TASK>
[ 6076.577625][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6076.577950][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6076.578258][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6076.578564][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 6076.578806][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6076.579102][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6076.579424][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6076.579730][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6076.579988][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6076.580269][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6076.580566][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6076.580810][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6076.581059][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6076.581298][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6076.581537][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6076.581787][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6076.582103][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6076.582370][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6076.582714][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6076.582990][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6076.583293][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6076.583596][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6076.583893][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6076.584144][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6076.584404][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6076.584651][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6076.584978][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6076.585279][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6076.585603][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6076.585918][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6076.586175][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6076.586429][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6076.586682][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6076.587000][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6076.587249][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6076.587488][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6076.587821][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6076.588074][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6076.588426][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6076.588756][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6076.589049][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6076.589372][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6076.589624][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6076.589858][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6076.590153][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6076.590414][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6076.590661][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6076.590931][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6076.591193][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6076.591432][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6076.591715][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6076.591964][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6076.592212][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6076.592555][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6076.592824][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6076.593093][ C3] kthread (kernel/kthread.c:388) 
[ 6076.593309][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6076.593552][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6076.593788][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6076.594028][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6104.564886][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6104.565376][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6104.565866][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6104.566354][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6104.567324][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6104.567953][    C3] Workqueue: netns cleanup_net
[ 6104.568206][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6104.568475][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 6104.569475][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 6104.569792][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6104.570206][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6104.570618][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6104.571030][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6104.571441][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6104.571857][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6104.572319][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6104.572660][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6104.573076][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6104.573489][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6104.573901][    C3] PKRU: 55555554
[ 6104.574089][    C3] Call Trace:
[ 6104.574266][    C3]  <IRQ>
[ 6104.574419][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6104.574689][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6104.574941][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6104.575226][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6104.575507][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6104.575805][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6104.576079][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6104.576395][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6104.576666][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6104.576984][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6104.577286][    C3]  </IRQ>
[ 6104.577443][    C3]  <TASK>
[ 6104.577598][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6104.577924][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6104.578230][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6104.578470][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6104.578765][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6104.579087][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6104.579392][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6104.579650][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6104.579930][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6104.580225][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6104.580471][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6104.580719][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6104.580958][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6104.581197][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6104.581447][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6104.581759][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6104.582024][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6104.582369][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6104.582646][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6104.582947][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6104.583250][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6104.583547][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6104.583797][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6104.584056][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6104.584302][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6104.584629][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6104.584936][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6104.585260][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6104.585575][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6104.585831][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6104.586084][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6104.586338][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6104.586655][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6104.586903][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6104.587143][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6104.587477][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6104.587729][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6104.588080][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6104.588408][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6104.588701][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6104.589024][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6104.589273][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6104.589511][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6104.589806][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6104.590066][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6104.590311][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6104.590581][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6104.590842][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6104.591079][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6104.591362][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6104.591604][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6104.591856][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6104.592199][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6104.592467][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6104.592736][ C3] kthread (kernel/kthread.c:388) 
[ 6104.592951][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6104.593192][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6104.593426][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6104.593667][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6116.679250][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 2589477 jiffies s: 467069 root: 0x8/.
| [ 6116.679906][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6116.680284][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 6116.680564][    C3] NMI backtrace for cpu 3
[ 6116.680572][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6116.680575][    C3] Workqueue: netns cleanup_net
[ 6116.680580][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 6116.680586][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 6116.680588][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 6116.680591][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 6116.680592][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6116.680594][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6116.680595][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 6116.680597][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 6116.680599][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6116.680601][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6116.680605][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6116.680606][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6116.680608][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6116.680609][    C3] PKRU: 55555554
[ 6116.680610][    C3] Call Trace:
[ 6116.680612][    C3]  <NMI>
[ 6116.680615][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 6116.680620][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 6116.680624][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 6116.680629][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 6116.680634][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 6116.680636][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 6116.680639][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6116.680644][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6116.680648][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 6116.680651][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 6116.680654][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 6116.680656][    C3]  </NMI>
[ 6116.680657][    C3]  <TASK>
[ 6116.680661][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 6116.680666][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6116.680670][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6116.680674][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6116.680678][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6116.680683][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6116.680686][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6116.680689][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6116.680692][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6116.680697][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6116.680700][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6116.680704][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6116.680706][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6116.680711][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6116.680714][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6116.680718][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6116.680721][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6116.680726][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6116.680729][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6116.680734][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6116.680740][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6116.680743][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6116.680746][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6116.680753][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6116.680761][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6116.680766][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6116.680771][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6116.680775][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6116.680779][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6116.680783][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6116.680791][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6116.680795][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6116.680798][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6116.680803][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6116.680806][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6116.680810][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6116.680814][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6116.680817][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6116.680821][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6116.680824][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6116.680827][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6116.680830][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6116.680833][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6116.680835][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6116.680840][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6116.680844][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6116.680847][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6116.680852][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6116.680855][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6116.680858][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6116.680862][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6116.680865][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6116.680867][ C3] kthread (kernel/kthread.c:388) 
[ 6116.680870][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6116.680872][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6116.680875][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6116.680877][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6116.680883][    C3]  </TASK>
| [ 6128.050229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6128.050605][    C3] rcu: 3-....: (2597476 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=572591
| [ 6128.051187][    C3] rcu: (t=2601143 jiffies g=2723341 q=5640 ncpus=4)
[ 6128.052028][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6128.052661][    C3] Workqueue: netns cleanup_net
[ 6128.052917][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6128.053254][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 6128.054257][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6128.054575][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6128.054987][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6128.055397][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6128.055811][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6128.056224][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6128.056638][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6128.057100][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6128.057445][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6128.057863][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6128.058276][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6128.058688][    C3] PKRU: 55555554
[ 6128.058875][    C3] Call Trace:
[ 6128.059052][    C3]  <IRQ>
[ 6128.059205][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 6128.059487][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 6128.059749][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 6128.060008][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 6128.060311][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 6128.060548][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 6128.060825][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 6128.061106][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 6128.061372][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 6128.061672][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6128.061926][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 6128.062250][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6128.062532][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6128.062830][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6128.063105][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6128.063423][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6128.063694][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6128.064015][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6128.064324][    C3]  </IRQ>
[ 6128.064479][    C3]  <TASK>
[ 6128.064636][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6128.064960][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6128.065267][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6128.065575][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6128.065899][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6128.066205][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6128.066464][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6128.066745][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6128.067042][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6128.067289][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6128.067538][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6128.067779][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6128.068019][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6128.068270][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6128.068580][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6128.068845][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6128.069191][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6128.069469][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6128.069772][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6128.070077][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6128.070375][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6128.070627][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6128.070888][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6128.071135][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6128.071463][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6128.071770][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6128.072094][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6128.072409][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6128.072667][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6128.072921][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6128.073175][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6128.073492][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6128.073740][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6128.073981][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6128.074315][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6128.074568][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6128.074922][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6128.075250][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6128.075545][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6128.075867][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6128.076117][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6128.076352][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6128.076650][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6128.076912][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6128.077159][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6128.077431][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6128.077693][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6128.077931][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6128.078215][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6128.078458][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6128.078706][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6128.079050][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6128.079319][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6128.079587][ C3] kthread (kernel/kthread.c:388) 
[ 6128.079805][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6128.080046][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6128.080282][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6128.080524][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6152.564894][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6152.565384][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6152.565879][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6152.566367][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6152.567346][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6152.567979][    C3] Workqueue: netns cleanup_net
[ 6152.568232][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6152.568502][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 6152.569507][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 6152.569824][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6152.570239][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6152.570655][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6152.571067][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6152.571479][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6152.571898][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6152.572361][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6152.572706][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6152.573119][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6152.573530][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6152.573944][    C3] PKRU: 55555554
[ 6152.574131][    C3] Call Trace:
[ 6152.574308][    C3]  <IRQ>
[ 6152.574462][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6152.574735][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6152.574986][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6152.575276][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6152.575557][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6152.575854][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6152.576128][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6152.576443][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6152.576714][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6152.577033][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6152.577339][    C3]  </IRQ>
[ 6152.577493][    C3]  <TASK>
[ 6152.577649][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6152.577973][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6152.578280][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6152.578520][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6152.578825][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6152.579122][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6152.579445][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6152.579751][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6152.580010][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6152.580289][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6152.580585][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6152.580832][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6152.581082][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6152.581321][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6152.581565][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6152.581814][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6152.582124][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6152.582391][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6152.582733][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6152.583009][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6152.583311][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6152.583614][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6152.583912][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6152.584162][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6152.584425][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6152.584671][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6152.584997][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6152.585298][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6152.585622][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6152.585937][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6152.586194][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6152.586447][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6152.586700][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6152.587019][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6152.587270][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6152.587511][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6152.587843][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6152.588094][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6152.588444][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6152.588771][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6152.589063][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6152.589385][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6152.589632][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6152.589866][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6152.590158][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6152.590419][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6152.590666][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6152.590936][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6152.591198][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6152.591435][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6152.591730][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6152.591972][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6152.592218][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6152.592561][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6152.592828][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6152.593095][ C3] kthread (kernel/kthread.c:388) 
[ 6152.593310][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6152.593550][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6152.593785][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6152.594026][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6180.564892][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6180.565382][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6180.565874][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6180.566364][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6180.567342][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6180.567973][    C3] Workqueue: netns cleanup_net
[ 6180.568226][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6180.568562][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 6180.569569][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6180.569887][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6180.570298][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6180.570710][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6180.571125][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6180.571543][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6180.571954][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6180.572417][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6180.572761][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6180.573177][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6180.573589][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6180.574001][    C3] PKRU: 55555554
[ 6180.574189][    C3] Call Trace:
[ 6180.574367][    C3]  <IRQ>
[ 6180.574518][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6180.574789][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6180.575041][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6180.575327][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6180.575612][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6180.575909][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6180.576182][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6180.576500][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6180.576772][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6180.577092][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6180.577398][    C3]  </IRQ>
[ 6180.577554][    C3]  <TASK>
[ 6180.577708][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6180.578035][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6180.578342][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6180.578646][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6180.578970][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6180.579278][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6180.579537][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6180.579817][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6180.580113][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6180.580363][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6180.580613][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6180.580852][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6180.581090][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6180.581342][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6180.581656][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6180.581921][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6180.582266][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6180.582546][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6180.582846][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6180.583150][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6180.583447][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6180.583696][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6180.583956][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6180.584205][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6180.584531][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6180.584828][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6180.585153][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6180.585470][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6180.585728][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6180.585980][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6180.586232][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6180.586550][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6180.586799][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6180.587039][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6180.587372][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6180.587623][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6180.587976][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6180.588305][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6180.588598][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6180.588921][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6180.589168][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6180.589401][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6180.589696][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6180.589958][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6180.590204][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6180.590474][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6180.590735][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6180.590974][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6180.591256][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6180.591505][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6180.591754][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6180.592098][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6180.592367][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6180.592634][ C3] kthread (kernel/kthread.c:388) 
[ 6180.592849][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6180.593092][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6180.593329][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6180.593569][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6180.593827][    C3]  </TASK>
| [ 6206.084229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6206.084604][    C3] rcu: 3-....: (2675420 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=590165
| [ 6206.085181][    C3] rcu: (t=2679177 jiffies g=2723341 q=5640 ncpus=4)
[ 6206.086014][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6206.086641][    C3] Workqueue: netns cleanup_net
[ 6206.086896][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:579) 
[ 6206.087161][ C3] Code: c3 cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   c:	00 
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	66 0f 1f 00          	nopw   (%rax)
  21:	41 57                	push   %r15
  23:	41 56                	push   %r14
  25:	41 55                	push   %r13
  27:	41 54                	push   %r12
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	48 83 ec 70          	sub    $0x70,%rsp
  2f:	9c                   	pushf
  30:	8f 04 24             	pop    (%rsp)
  33:	0f 01 ca             	clac
  36:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  3d:	1f 00 
  3f:	41                   	rex.B

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	48 83 ec 70          	sub    $0x70,%rsp
   5:	9c                   	pushf
   6:	8f 04 24             	pop    (%rsp)
   9:	0f 01 ca             	clac
   c:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  13:	1f 00 
  15:	41                   	rex.B
[ 6206.088158][    C3] RSP: 0018:ffffc9000051f4a0 EFLAGS: 00000246
[ 6206.088475][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6206.088887][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6206.089301][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6206.089713][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6206.090124][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6206.090535][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6206.090997][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6206.091352][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6206.091766][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6206.092176][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6206.092589][    C3] PKRU: 55555554
[ 6206.092776][    C3] Call Trace:
[ 6206.092953][    C3]  <IRQ>
[ 6206.093105][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 6206.093387][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 6206.093648][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 6206.093906][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 6206.094203][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 6206.094442][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 6206.094720][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 6206.094998][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 6206.095264][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 6206.095557][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6206.095808][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 6206.096131][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6206.096412][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6206.096711][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6206.096987][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6206.097302][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6206.097575][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6206.097893][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6206.098198][    C3]  </IRQ>
[ 6206.098354][    C3]  <TASK>
[ 6206.098510][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6206.098835][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6206.099138][ C3] ? kasan_report (mm/kasan/report.c:579) 
[ 6206.099375][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6206.099667][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6206.099989][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6206.100295][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6206.100552][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6206.100832][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6206.101123][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6206.101376][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6206.101625][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6206.101862][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6206.102101][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6206.102353][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6206.102658][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6206.102922][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6206.103265][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6206.103541][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6206.103842][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6206.104146][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6206.104442][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6206.104690][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6206.104949][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6206.105196][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6206.105525][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6206.105820][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6206.106144][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6206.106458][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6206.106718][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6206.106969][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6206.107220][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6206.107537][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6206.107784][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6206.108025][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6206.108358][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6206.108608][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6206.108959][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6206.109286][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6206.109579][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6206.109900][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6206.110146][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6206.110379][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6206.110672][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6206.110931][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6206.111174][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6206.111447][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6206.111708][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6206.111947][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6206.112227][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6206.112470][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6206.112717][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6206.113060][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6206.113328][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6206.113595][ C3] kthread (kernel/kthread.c:388) 
[ 6206.113808][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6206.114050][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6206.114284][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6206.114525][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6214.983257][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 2687781 jiffies s: 467069 root: 0x8/.
| [ 6214.983927][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6214.984309][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 6214.984591][    C3] NMI backtrace for cpu 3
[ 6214.984601][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6214.984603][    C3] Workqueue: netns cleanup_net
[ 6214.984609][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6214.984614][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 6214.984617][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6214.984619][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6214.984621][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6214.984622][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6214.984624][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6214.984626][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6214.984627][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6214.984629][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6214.984633][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6214.984635][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6214.984636][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6214.984638][    C3] PKRU: 55555554
[ 6214.984639][    C3] Call Trace:
[ 6214.984641][    C3]  <NMI>
[ 6214.984644][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 6214.984648][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 6214.984653][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 6214.984658][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 6214.984662][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 6214.984664][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 6214.984668][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6214.984671][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6214.984675][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6214.984678][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6214.984682][    C3]  </NMI>
[ 6214.984683][    C3]  <TASK>
[ 6214.984684][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6214.984688][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6214.984693][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6214.984697][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6214.984699][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6214.984703][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6214.984705][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6214.984709][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6214.984712][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6214.984716][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6214.984718][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6214.984723][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6214.984726][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6214.984729][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6214.984733][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6214.984738][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6214.984741][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6214.984746][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6214.984752][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6214.984756][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6214.984759][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6214.984765][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6214.984772][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6214.984778][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6214.984783][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6214.984787][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6214.984791][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6214.984795][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6214.984802][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6214.984805][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6214.984809][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6214.984813][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6214.984816][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6214.984819][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6214.984823][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6214.984826][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6214.984829][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6214.984832][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6214.984835][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6214.984838][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6214.984841][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6214.984843][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6214.984847][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6214.984851][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6214.984855][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6214.984860][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6214.984863][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6214.984866][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6214.984870][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6214.984873][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6214.984875][ C3] kthread (kernel/kthread.c:388) 
[ 6214.984877][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6214.984880][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6214.984882][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6214.984884][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6240.564899][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6240.565393][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6240.565886][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6240.566373][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6240.567350][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6240.567980][    C3] Workqueue: netns cleanup_net
[ 6240.568233][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6240.568568][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 6240.569568][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6240.569886][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6240.570298][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6240.570711][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6240.571128][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6240.571539][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6240.571950][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6240.572411][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6240.572754][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6240.573168][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6240.573579][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6240.573989][    C3] PKRU: 55555554
[ 6240.574176][    C3] Call Trace:
[ 6240.574353][    C3]  <IRQ>
[ 6240.574504][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6240.574775][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6240.575028][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6240.575315][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6240.575597][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6240.575894][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6240.576168][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6240.576485][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6240.576755][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6240.577074][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6240.577379][    C3]  </IRQ>
[ 6240.577534][    C3]  <TASK>
[ 6240.577688][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6240.578015][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6240.578320][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6240.578626][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6240.578945][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6240.579253][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6240.579512][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6240.579791][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6240.580086][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6240.580331][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6240.580582][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6240.580820][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6240.581063][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6240.581314][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6240.581622][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6240.581885][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6240.582229][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6240.582510][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6240.582810][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6240.583114][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6240.583413][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6240.583662][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6240.583920][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6240.584169][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6240.584495][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6240.584793][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6240.585116][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6240.585431][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6240.585690][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6240.585943][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6240.586196][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6240.586512][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6240.586761][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6240.587002][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6240.587335][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6240.587586][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6240.587938][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6240.588266][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6240.588558][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6240.588882][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6240.589130][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6240.589364][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6240.589660][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6240.589920][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6240.590166][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6240.590437][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6240.590698][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6240.590937][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6240.591225][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6240.591469][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6240.591718][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6240.592062][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6240.592331][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6240.592599][ C3] kthread (kernel/kthread.c:388) 
[ 6240.592813][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6240.593056][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6240.593292][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6240.593531][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6268.564892][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6268.565386][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6268.565878][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6268.566365][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6268.567342][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6268.567977][    C3] Workqueue: netns cleanup_net
[ 6268.568230][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6268.568501][ C3] 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
All code
========
   0:	90                   	nop
   1:	66 0f 1f 00          	nopw   (%rax)
   5:	41 57                	push   %r15
   7:	41 56                	push   %r14
   9:	41 55                	push   %r13
   b:	41 54                	push   %r12
   d:	55                   	push   %rbp
   e:	53                   	push   %rbx
   f:	48 83 ec 70          	sub    $0x70,%rsp
  13:	9c                   	pushf
  14:	8f 04 24             	pop    (%rsp)
  17:	0f 01 ca             	clac
  1a:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  21:	1f 00 
  23:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 b7 00 00 00    	jne    0xe9
  32:	48 89 fd             	mov    %rdi,%rbp
  35:	49 89 f6             	mov    %rsi,%r14
  38:	89 d3                	mov    %edx,%ebx
  3a:	49 89 cd             	mov    %rcx,%r13
  3d:	e8                   	.byte 0xe8
  3e:	0f                   	.byte 0xf
  3f:	f7                   	.byte 0xf7

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 b7 00 00 00    	jne    0xbf
   8:	48 89 fd             	mov    %rdi,%rbp
   b:	49 89 f6             	mov    %rsi,%r14
   e:	89 d3                	mov    %edx,%ebx
  10:	49 89 cd             	mov    %rcx,%r13
  13:	e8                   	.byte 0xe8
  14:	0f                   	.byte 0xf
  15:	f7                   	.byte 0xf7
[ 6268.569504][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 6268.569822][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6268.570236][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6268.570649][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6268.571078][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6268.571495][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 6268.571909][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6268.572372][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6268.572715][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6268.573129][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6268.573546][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6268.573959][    C3] PKRU: 55555554
[ 6268.574148][    C3] Call Trace:
[ 6268.574328][    C3]  <IRQ>
[ 6268.574482][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6268.574754][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6268.575007][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6268.575294][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6268.575575][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6268.575876][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6268.576151][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6268.576468][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6268.576740][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6268.577059][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6268.577365][    C3]  </IRQ>
[ 6268.577520][    C3]  <TASK>
[ 6268.577678][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6268.578005][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6268.578310][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6268.578553][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6268.578849][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6268.579173][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6268.579481][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6268.579740][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6268.580022][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6268.580319][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6268.580568][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6268.580818][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6268.581062][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6268.581302][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6268.581553][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6268.581861][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6268.582127][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6268.582473][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6268.582752][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6268.583052][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6268.583358][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6268.583656][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6268.583905][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6268.584167][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6268.584419][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6268.584746][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6268.585044][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6268.585371][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6268.585687][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6268.585946][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6268.586200][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6268.586453][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6268.586772][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6268.587022][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6268.587263][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6268.587596][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6268.587846][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6268.588201][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6268.588529][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6268.588823][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6268.589154][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6268.589402][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6268.589635][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6268.589932][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6268.590192][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6268.590437][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6268.590707][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6268.590973][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6268.591213][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6268.591496][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6268.591739][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6268.591987][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6268.592331][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6268.592599][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6268.592866][ C3] kthread (kernel/kthread.c:388) 
[ 6268.593080][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6268.593323][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6268.593556][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6268.593798][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6268.594054][    C3]  </TASK>
| [ 6284.118230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6284.118603][    C3] rcu: 3-....: (2753341 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=606802
| [ 6284.119181][    C3] rcu: (t=2757211 jiffies g=2723341 q=5640 ncpus=4)
[ 6284.120015][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6284.120650][    C3] Workqueue: netns cleanup_net
[ 6284.120910][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6284.121249][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 6284.122254][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6284.122577][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6284.122990][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6284.123403][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6284.123815][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6284.124230][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6284.124643][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6284.125107][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6284.125451][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6284.125866][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6284.126280][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6284.126692][    C3] PKRU: 55555554
[ 6284.126880][    C3] Call Trace:
[ 6284.127057][    C3]  <IRQ>
[ 6284.127210][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 6284.127492][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 6284.127754][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 6284.128014][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 6284.128309][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 6284.128549][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 6284.128828][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 6284.129113][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 6284.129379][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 6284.129677][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6284.129928][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 6284.130251][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6284.130535][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6284.130839][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6284.131113][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6284.131433][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6284.131703][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6284.132024][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6284.132331][    C3]  </IRQ>
[ 6284.132486][    C3]  <TASK>
[ 6284.132641][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6284.132967][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6284.133273][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6284.133579][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6284.133901][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6284.134213][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6284.134473][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6284.134756][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6284.135052][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6284.135297][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6284.135548][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6284.135787][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6284.136026][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6284.136278][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6284.136586][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6284.136851][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6284.137196][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6284.137473][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6284.137775][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6284.138079][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6284.138378][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6284.138628][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6284.138889][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6284.139138][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6284.139466][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6284.139766][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6284.140090][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6284.140407][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6284.140665][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6284.140924][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6284.141178][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6284.141495][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6284.141746][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6284.141986][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6284.142320][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6284.142571][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6284.142925][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6284.143255][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6284.143548][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6284.143871][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6284.144121][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6284.144354][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6284.144651][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6284.144912][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6284.145158][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6284.145430][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6284.145692][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6284.145932][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6284.146214][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6284.146460][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6284.146708][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6284.147052][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6284.147321][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6284.147589][ C3] kthread (kernel/kthread.c:388) 
[ 6284.147804][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6284.148048][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6284.148284][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6284.148525][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6308.564887][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6308.565378][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6308.565870][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6308.566358][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6308.567330][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6308.567962][    C3] Workqueue: netns cleanup_net
[ 6308.568213][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 6308.568484][ C3] Code: 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 44 89 e0 5b <5d> 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb e1 0f 1f 00
All code
========
   0:	7c f5                	jl     0xfffffffffffffff7
   2:	ff                   	(bad)
   3:	ff 48 8d             	decl   -0x73(%rax)
   6:	7c 24                	jl     0x2c
   8:	10 e8                	adc    %ch,%al
   a:	92                   	xchg   %eax,%edx
   b:	fa                   	cli
   c:	ff                   	(bad)
   d:	ff 0f                	decl   (%rdi)
   f:	b6 d3                	mov    $0xd3,%dh
  11:	48 89 ee             	mov    %rbp,%rsi
  14:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  19:	e8 02 fd ff ff       	call   0xfffffffffffffd20
  1e:	ff 34 24             	push   (%rsp)
  21:	9d                   	popf
  22:	48 83 c4 70          	add    $0x70,%rsp
  26:	44 89 e0             	mov    %r12d,%eax
  29:	5b                   	pop    %rbx
  2a:*	5d                   	pop    %rbp		<-- trapping instruction
  2b:	41 5c                	pop    %r12
  2d:	41 5d                	pop    %r13
  2f:	41 5e                	pop    %r14
  31:	41 5f                	pop    %r15
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	45 31 e4             	xor    %r12d,%r12d
  3b:	eb e1                	jmp    0x1e
  3d:	0f 1f 00             	nopl   (%rax)

Code starting with the faulting instruction
===========================================
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	41 5d                	pop    %r13
   5:	41 5e                	pop    %r14
   7:	41 5f                	pop    %r15
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	45 31 e4             	xor    %r12d,%r12d
  11:	eb e1                	jmp    0xfffffffffffffff4
  13:	0f 1f 00             	nopl   (%rax)
[ 6308.569485][    C3] RSP: 0018:ffffc9000051f480 EFLAGS: 00000286
[ 6308.569802][    C3] RAX: 0000000000000000 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 6308.570212][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6308.570623][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6308.571042][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 6308.571455][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 6308.571866][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6308.572328][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6308.572671][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6308.573084][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6308.573497][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6308.573907][    C3] PKRU: 55555554
[ 6308.574095][    C3] Call Trace:
[ 6308.574272][    C3]  <IRQ>
[ 6308.574424][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6308.574696][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6308.574948][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6308.575234][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6308.575514][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6308.575814][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6308.576089][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6308.576408][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6308.576678][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6308.576998][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6308.577301][    C3]  </IRQ>
[ 6308.577458][    C3]  <TASK>
[ 6308.577613][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6308.577936][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6308.578236][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6308.578537][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 6308.578776][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 6308.579032][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6308.579325][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6308.579648][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6308.579954][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6308.580212][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6308.580493][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6308.580795][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6308.581042][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6308.581290][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6308.581530][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6308.581771][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6308.582020][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6308.582328][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6308.582593][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6308.582936][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6308.583212][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6308.583515][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6308.583821][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6308.584117][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6308.584367][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6308.584628][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6308.584874][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6308.585200][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6308.585501][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6308.585826][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6308.586138][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6308.586396][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6308.586649][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6308.586902][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6308.587220][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6308.587466][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6308.587708][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6308.588040][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6308.588294][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6308.588645][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6308.588973][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6308.589268][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6308.589589][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6308.589838][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6308.590072][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6308.590366][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6308.590626][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6308.590883][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6308.591154][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6308.591416][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6308.591653][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6308.591939][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6308.592180][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6308.592427][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6308.592770][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6308.593039][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6308.593306][ C3] kthread (kernel/kthread.c:388) 
[ 6308.593522][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6308.593762][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6308.593997][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6308.594239][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6313.287251][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 2786085 jiffies s: 467069 root: 0x8/.
| [ 6313.287926][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6313.288304][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 6313.288583][    C3] NMI backtrace for cpu 3
[ 6313.288590][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6313.288593][    C3] Workqueue: netns cleanup_net
[ 6313.288597][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6313.288601][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 6313.288604][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 6313.288606][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 6313.288607][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6313.288609][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6313.288610][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6313.288612][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 6313.288613][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6313.288615][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6313.288618][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6313.288620][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6313.288621][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6313.288623][    C3] PKRU: 55555554
[ 6313.288624][    C3] Call Trace:
[ 6313.288626][    C3]  <NMI>
[ 6313.288628][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 6313.288633][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 6313.288637][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 6313.288642][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 6313.288645][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 6313.288647][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 6313.288651][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6313.288655][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6313.288659][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6313.288661][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6313.288665][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6313.288668][    C3]  </NMI>
[ 6313.288669][    C3]  <TASK>
[ 6313.288669][ C3] kasan_report (mm/kasan/report.c:585) 
[ 6313.288674][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6313.288678][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 6313.288681][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6313.288685][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6313.288689][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6313.288693][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6313.288697][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6313.288700][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6313.288703][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6313.288705][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6313.288710][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6313.288712][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6313.288716][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6313.288718][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6313.288723][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6313.288725][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6313.288729][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6313.288732][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6313.288737][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6313.288740][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6313.288745][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6313.288749][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6313.288753][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6313.288755][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6313.288762][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6313.288769][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6313.288775][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6313.288779][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6313.288783][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6313.288787][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6313.288792][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6313.288799][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6313.288802][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6313.288805][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6313.288809][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6313.288812][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6313.288815][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6313.288819][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6313.288822][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6313.288825][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6313.288828][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6313.288831][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6313.288834][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6313.288837][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6313.288839][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6313.288843][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6313.288847][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6313.288850][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6313.288855][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6313.288858][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6313.288861][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6313.288864][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6313.288867][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6313.288870][ C3] kthread (kernel/kthread.c:388) 
[ 6313.288872][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6313.288874][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6313.288876][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6313.288878][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6340.564890][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6340.565380][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6340.565871][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6340.566356][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6340.567327][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6340.567955][    C3] Workqueue: netns cleanup_net
[ 6340.568207][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6340.568476][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 6340.569471][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 6340.569789][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6340.570200][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6340.570617][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6340.571027][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6340.571439][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 6340.571850][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6340.572311][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6340.572652][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6340.573064][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6340.573477][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6340.573887][    C3] PKRU: 55555554
[ 6340.574075][    C3] Call Trace:
[ 6340.574250][    C3]  <IRQ>
[ 6340.574404][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6340.574675][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6340.574926][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6340.575212][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6340.575492][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6340.575790][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6340.576063][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6340.576379][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6340.576649][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6340.576966][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6340.577274][    C3]  </IRQ>
[ 6340.577429][    C3]  <TASK>
[ 6340.577585][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6340.577910][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6340.578213][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6340.578453][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6340.578752][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6340.579050][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6340.579373][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6340.579677][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6340.579937][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6340.580227][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6340.580520][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6340.580772][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6340.581018][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6340.581257][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6340.581497][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6340.581747][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6340.582053][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6340.582318][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6340.582660][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6340.582937][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6340.583236][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6340.583540][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6340.583835][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6340.584086][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6340.584345][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6340.584590][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6340.584913][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6340.585212][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6340.585536][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6340.585852][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6340.586107][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6340.586360][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6340.586613][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6340.586932][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6340.587178][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6340.587417][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6340.587749][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6340.588001][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6340.588351][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6340.588678][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6340.588972][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6340.589292][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6340.589539][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6340.589773][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6340.590068][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6340.590327][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6340.590580][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6340.590850][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6340.591116][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6340.591355][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6340.591639][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6340.591881][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6340.592128][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6340.592470][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6340.592739][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6340.593007][ C3] kthread (kernel/kthread.c:388) 
[ 6340.593223][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6340.593464][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6340.593698][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6340.593940][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6340.594195][    C3]  </TASK>
| [ 6362.151230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6362.151603][    C3] rcu: 3-....: (2831258 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=624687
| [ 6362.152179][    C3] rcu: (t=2835244 jiffies g=2723341 q=5640 ncpus=4)
[ 6362.153014][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6362.153643][    C3] Workqueue: netns cleanup_net
[ 6362.153897][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 6362.154166][ C3] Code: 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	41 57                	push   %r15
  1a:	41 56                	push   %r14
  1c:	41 55                	push   %r13
  1e:	41 54                	push   %r12
  20:	55                   	push   %rbp
  21:	53                   	push   %rbx
  22:	48 83 ec 70          	sub    $0x70,%rsp
  26:	9c                   	pushf
  27:	8f 04 24             	pop    (%rsp)
  2a:*	0f 01 ca             	clac		<-- trapping instruction
  2d:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  34:	1f 00 
  36:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3d:	85 c0                	test   %eax,%eax
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	0f 01 ca             	clac
   3:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   a:	1f 00 
   c:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  13:	85 c0                	test   %eax,%eax
  15:	0f                   	.byte 0xf
[ 6362.155162][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 6362.155479][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6362.155889][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6362.156299][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6362.156710][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6362.157121][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6362.157530][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6362.157989][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6362.158332][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6362.158747][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6362.159159][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6362.159571][    C3] PKRU: 55555554
[ 6362.159758][    C3] Call Trace:
[ 6362.159935][    C3]  <IRQ>
[ 6362.160086][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 6362.160371][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 6362.160638][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 6362.160897][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 6362.161194][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 6362.161431][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 6362.161708][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 6362.161988][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 6362.162253][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 6362.162547][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6362.162797][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 6362.163119][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6362.163400][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6362.163697][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6362.163970][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6362.164285][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6362.164557][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6362.164876][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6362.165183][    C3]  </IRQ>
[ 6362.165336][    C3]  <TASK>
[ 6362.165493][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6362.165816][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6362.166121][ C3] ? kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 6362.166364][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6362.166656][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6362.166978][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6362.167284][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6362.167541][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6362.167821][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6362.168114][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6362.168361][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6362.168610][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6362.168847][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6362.169087][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6362.169339][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6362.169648][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6362.169912][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6362.170257][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6362.170540][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6362.170839][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6362.171144][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6362.171439][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6362.171689][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6362.171948][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6362.172196][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6362.172521][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6362.172818][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6362.173143][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6362.173458][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6362.173715][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6362.173966][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6362.174219][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6362.174538][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6362.174786][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6362.175024][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6362.175356][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6362.175611][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6362.175963][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6362.176290][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6362.176584][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6362.176907][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6362.177153][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6362.177388][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6362.177680][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6362.177939][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6362.178185][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6362.178454][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6362.178715][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6362.178959][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6362.179241][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6362.179483][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6362.179729][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6362.180075][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6362.180343][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6362.180615][ C3] kthread (kernel/kthread.c:388) 
[ 6362.180829][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6362.181072][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6362.181304][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6362.181547][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6388.564882][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6388.565371][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6388.565865][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6388.566352][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6388.567323][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6388.567950][    C3] Workqueue: netns cleanup_net
[ 6388.568203][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6388.568480][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 6388.569479][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 6388.569795][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 6388.570209][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6388.570626][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6388.571037][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6388.571448][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 6388.571860][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6388.572320][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6388.572663][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6388.573076][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6388.573486][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6388.573899][    C3] PKRU: 55555554
[ 6388.574086][    C3] Call Trace:
[ 6388.574261][    C3]  <IRQ>
[ 6388.574415][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6388.574686][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6388.574935][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6388.575223][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6388.575505][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6388.575802][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6388.576076][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6388.576391][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6388.576659][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6388.576979][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6388.577285][    C3]  </IRQ>
[ 6388.577438][    C3]  <TASK>
[ 6388.577595][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6388.577918][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6388.578223][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6388.578528][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6388.578773][ C3] kasan_report (mm/kasan/report.c:585) 
[ 6388.579003][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6388.579296][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6388.579618][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6388.579925][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6388.580182][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6388.580468][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6388.580760][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6388.581007][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6388.581256][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6388.581497][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6388.581736][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6388.581986][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6388.582297][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6388.582560][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6388.582905][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6388.583182][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6388.583482][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6388.583788][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6388.584083][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6388.584332][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6388.584592][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6388.584841][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6388.585167][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6388.585463][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6388.585788][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6388.586103][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6388.586361][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6388.586613][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6388.586864][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6388.587182][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6388.587431][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6388.587670][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6388.588001][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6388.588251][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6388.588605][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6388.588932][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6388.589224][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6388.589546][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6388.589794][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6388.590027][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6388.590328][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6388.590589][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6388.590832][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6388.591103][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6388.591363][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6388.591604][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6388.591890][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6388.592135][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6388.592383][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6388.592727][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6388.592995][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6388.593262][ C3] kthread (kernel/kthread.c:388) 
[ 6388.593477][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6388.593721][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6388.593953][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6388.594195][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6411.591255][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 2884389 jiffies s: 467069 root: 0x8/.
| [ 6411.591917][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6411.592289][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 6411.592568][    C3] NMI backtrace for cpu 3
[ 6411.592578][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6411.592580][    C3] Workqueue: netns cleanup_net
[ 6411.592586][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 6411.592593][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 6411.592596][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000286
[ 6411.592599][    C3] RAX: ffff888022f2b20c RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 6411.592601][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6411.592602][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6411.592604][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6411.592606][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6411.592608][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6411.592609][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6411.592613][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6411.592615][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6411.592616][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6411.592617][    C3] PKRU: 55555554
[ 6411.592618][    C3] Call Trace:
[ 6411.592621][    C3]  <NMI>
[ 6411.592625][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 6411.592630][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 6411.592634][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 6411.592638][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 6411.592642][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 6411.592644][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 6411.592649][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6411.592654][ C3] ? kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 6411.592657][ C3] ? kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 6411.592661][ C3] ? kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 6411.592664][    C3]  </NMI>
[ 6411.592665][    C3]  <TASK>
[ 6411.592667][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6411.592671][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6411.592675][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6411.592679][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6411.592684][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6411.592687][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6411.592690][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6411.592692][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6411.592697][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6411.592700][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6411.592704][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6411.592707][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6411.592712][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6411.592715][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6411.592718][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6411.592722][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6411.592727][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6411.592730][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6411.592736][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6411.592742][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6411.592746][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6411.592749][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6411.592757][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6411.592764][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6411.592769][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6411.592774][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6411.592778][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6411.592782][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6411.592786][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6411.592794][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6411.592798][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6411.592802][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6411.592807][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6411.592810][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6411.592813][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6411.592818][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6411.592821][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6411.592824][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6411.592827][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6411.592830][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6411.592833][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6411.592836][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6411.592839][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6411.592843][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6411.592848][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6411.592851][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6411.592855][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6411.592859][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6411.592861][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6411.592865][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6411.592868][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6411.592871][ C3] kthread (kernel/kthread.c:388) 
[ 6411.592873][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6411.592876][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6411.592878][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6411.592880][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6436.564888][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6436.565377][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6436.565870][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6436.566354][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6436.567328][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6436.567957][    C3] Workqueue: netns cleanup_net
[ 6436.568210][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 6436.568508][ C3] Code: 0f b6 c2 48 01 f0 55 53 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23 44 89 c2 e8 57 e8 ff ff 83 f0 01 5b <5d> 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76
All code
========
   0:	0f b6 c2             	movzbl %dl,%eax
   3:	48 01 f0             	add    %rsi,%rax
   6:	55                   	push   %rbp
   7:	53                   	push   %rbx
   8:	72 14                	jb     0x1e
   a:	eb 26                	jmp    0x32
   c:	cc                   	int3
   d:	cc                   	int3
   e:	cc                   	int3
   f:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  16:	ff ff fe 
  19:	48 39 c7             	cmp    %rax,%rdi
  1c:	77 23                	ja     0x41
  1e:	44 89 c2             	mov    %r8d,%edx
  21:	e8 57 e8 ff ff       	call   0xffffffffffffe87d
  26:	83 f0 01             	xor    $0x1,%eax
  29:	5b                   	pop    %rbx
  2a:*	5d                   	pop    %rbp		<-- trapping instruction
  2b:	41 5c                	pop    %r12
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  39:	7f ff ff 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	76                   	.byte 0x76

Code starting with the faulting instruction
===========================================
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
   f:	7f ff ff 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	76                   	.byte 0x76
[ 6436.569509][    C3] RSP: 0018:ffffc9000051f4b8 EFLAGS: 00000202
[ 6436.569827][    C3] RAX: 0000000000000001 RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 6436.570245][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6436.570656][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 6436.571066][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6436.571479][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6436.571891][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6436.572351][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6436.572693][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6436.573107][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6436.573521][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6436.573933][    C3] PKRU: 55555554
[ 6436.574121][    C3] Call Trace:
[ 6436.574296][    C3]  <IRQ>
[ 6436.574450][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6436.574720][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6436.574971][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6436.575257][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6436.575538][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6436.575848][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6436.576121][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6436.576437][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6436.576708][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6436.577027][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6436.577331][    C3]  </IRQ>
[ 6436.577487][    C3]  <TASK>
[ 6436.577644][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6436.577969][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6436.578267][ C3] ? kasan_check_range (mm/kasan/generic.c:190) 
[ 6436.578532][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6436.578825][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6436.579147][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6436.579454][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6436.579712][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6436.579991][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6436.580294][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6436.580541][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6436.580788][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6436.581028][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6436.581267][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6436.581517][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6436.581825][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6436.582090][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6436.582437][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6436.582715][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6436.583017][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6436.583319][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6436.583618][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6436.583867][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6436.584127][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6436.584373][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6436.584701][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6436.585000][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6436.585323][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6436.585638][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6436.585895][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6436.586148][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6436.586403][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6436.586719][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6436.586967][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6436.587208][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6436.587540][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6436.587792][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6436.588143][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6436.588473][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6436.588766][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6436.589088][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6436.589336][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6436.589570][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6436.589864][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6436.590130][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6436.590377][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6436.590648][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6436.590910][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6436.591148][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6436.591435][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6436.591677][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6436.591924][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6436.592268][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6436.592536][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6436.592803][ C3] kthread (kernel/kthread.c:388) 
[ 6436.593019][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6436.593261][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6436.593496][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6436.593737][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6436.593992][    C3]  </TASK>
| [ 6440.185229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6440.185595][    C3] rcu: 3-....: (2909178 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=642569
| [ 6440.186175][    C3] rcu: (t=2913278 jiffies g=2723341 q=5640 ncpus=4)
[ 6440.187007][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6440.187643][    C3] Workqueue: netns cleanup_net
[ 6440.187898][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 6440.188168][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 6440.189168][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 6440.189486][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 6440.189898][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6440.190311][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6440.190723][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 6440.191135][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 6440.191545][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6440.192005][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6440.192347][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6440.192759][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6440.193172][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6440.193583][    C3] PKRU: 55555554
[ 6440.193770][    C3] Call Trace:
[ 6440.193945][    C3]  <IRQ>
[ 6440.194098][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 6440.194379][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 6440.194638][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 6440.194898][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 6440.195191][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 6440.195430][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 6440.195707][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 6440.195983][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 6440.196248][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 6440.196548][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6440.196797][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 6440.197116][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6440.197400][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6440.197694][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6440.197965][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6440.198281][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6440.198549][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6440.198866][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6440.199169][    C3]  </IRQ>
[ 6440.199323][    C3]  <TASK>
[ 6440.199476][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6440.199799][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6440.200106][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6440.200401][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 6440.200641][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6440.200937][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 6440.201176][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 6440.201432][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6440.201720][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6440.202040][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6440.202346][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6440.202601][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6440.202879][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6440.203172][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6440.203418][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6440.203667][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6440.203903][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6440.204142][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6440.204396][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6440.204701][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6440.204964][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6440.205308][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6440.205584][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6440.205881][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6440.206186][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6440.206480][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6440.206728][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6440.206987][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6440.207235][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6440.207561][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6440.207858][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6440.208181][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6440.208497][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6440.208753][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6440.209003][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6440.209253][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6440.209570][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6440.209818][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6440.210055][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6440.210395][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6440.210645][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6440.210996][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6440.211322][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6440.211614][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6440.211936][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6440.212183][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6440.212415][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6440.212708][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6440.212966][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6440.213210][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6440.213479][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6440.213738][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6440.213979][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6440.214260][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6440.214503][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6440.214749][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6440.215091][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6440.215359][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6440.215625][ C3] kthread (kernel/kthread.c:388) 
[ 6440.215838][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6440.216082][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6440.216312][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6440.216555][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6464.564921][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6464.565412][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6464.565904][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6464.566395][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6464.567375][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6464.568012][    C3] Workqueue: netns cleanup_net
[ 6464.568265][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6464.568600][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 6464.569603][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6464.569921][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6464.570340][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6464.570751][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6464.571167][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6464.571583][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6464.571993][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6464.572454][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6464.572797][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6464.573215][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6464.573627][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6464.574040][    C3] PKRU: 55555554
[ 6464.574227][    C3] Call Trace:
[ 6464.574405][    C3]  <IRQ>
[ 6464.574558][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6464.574829][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6464.575081][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6464.575368][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6464.575651][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6464.575951][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6464.576225][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6464.576544][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6464.576816][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6464.577135][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6464.577439][    C3]  </IRQ>
[ 6464.577597][    C3]  <TASK>
[ 6464.577751][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6464.578077][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6464.578383][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6464.578688][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6464.579010][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6464.579316][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6464.579575][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6464.579855][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6464.580154][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6464.580402][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6464.580653][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6464.580890][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6464.581129][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6464.581380][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6464.581686][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6464.581950][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6464.582294][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6464.582570][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6464.582868][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6464.583176][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6464.583472][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6464.583720][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6464.583983][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6464.584230][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6464.584556][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6464.584852][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6464.585175][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6464.585490][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6464.585747][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6464.585997][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6464.586249][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6464.586570][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6464.586818][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6464.587055][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6464.587387][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6464.587637][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6464.587990][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6464.588316][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6464.588611][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6464.588932][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6464.589178][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6464.589410][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6464.589705][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6464.589968][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6464.590213][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6464.590481][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6464.590741][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6464.590980][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6464.591263][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6464.591506][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6464.591751][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6464.592094][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6464.592362][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6464.592628][ C3] kthread (kernel/kthread.c:388) 
[ 6464.592841][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6464.593083][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6464.593315][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6464.593559][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6492.564952][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6492.565447][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6492.565955][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6492.566449][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6492.567436][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6492.568074][    C3] Workqueue: netns cleanup_net
[ 6492.568329][ C3] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6492.568669][ C3] Code: 0f 1f 44 00 00 49 89 fd 49 89 fc 41 be 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 <be> 04 00 00 00 48 89 ef e8 d0 79 e9 fd 41 0f b6 45 00 41 38 c4 7c
All code
========
   0:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   5:	49 89 fd             	mov    %rdi,%r13
   8:	49 89 fc             	mov    %rdi,%r12
   b:	41 be 01 00 00 00    	mov    $0x1,%r14d
  11:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  18:	fc ff df 
  1b:	49 c1 ed 03          	shr    $0x3,%r13
  1f:	41 83 e4 07          	and    $0x7,%r12d
  23:	49 01 c5             	add    %rax,%r13
  26:	41 83 c4 03          	add    $0x3,%r12d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 d0 79 e9 fd       	call   0xfffffffffde97a07
  37:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  3c:	41 38 c4             	cmp    %al,%r12b
  3f:	7c                   	.byte 0x7c

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 d0 79 e9 fd       	call   0xfffffffffde979dd
   d:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  12:	41 38 c4             	cmp    %al,%r12b
  15:	7c                   	.byte 0x7c
[ 6492.569687][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6492.570014][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6492.570426][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6492.570846][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6492.571259][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6492.571679][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6492.572090][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6492.572547][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6492.572895][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6492.573312][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6492.573734][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6492.574143][    C3] PKRU: 55555554
[ 6492.574332][    C3] Call Trace:
[ 6492.574510][    C3]  <IRQ>
[ 6492.574670][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6492.574941][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6492.575194][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6492.575479][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6492.575772][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6492.576068][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6492.576342][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6492.576664][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6492.576935][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6492.577257][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6492.577560][    C3]  </IRQ>
[ 6492.577727][    C3]  <TASK>
[ 6492.577882][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6492.578208][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6492.578518][ C3] ? queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6492.578823][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6492.579146][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6492.579452][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6492.579715][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6492.580013][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6492.580306][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6492.580553][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6492.580810][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6492.581046][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6492.581285][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6492.581536][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6492.581854][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6492.582118][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6492.582461][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6492.582750][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6492.583048][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6492.583353][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6492.583652][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6492.583906][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6492.584166][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6492.584414][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6492.584750][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6492.585046][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6492.585370][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6492.585698][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6492.585956][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6492.586205][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6492.586460][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6492.586787][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6492.587037][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6492.587275][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6492.587609][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6492.587868][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6492.588219][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6492.588546][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6492.588847][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6492.589171][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6492.589419][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6492.589659][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6492.589966][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6492.590227][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6492.590475][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6492.590754][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6492.591016][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6492.591257][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6492.591540][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6492.591792][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6492.592040][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6492.592386][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6492.592661][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6492.592933][ C3] kthread (kernel/kthread.c:388) 
[ 6492.593148][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6492.593394][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6492.593629][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6492.593885][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6509.895268][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 2982693 jiffies s: 467069 root: 0x8/.
| [ 6509.896168][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6509.896678][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 6509.897063][    C3] NMI backtrace for cpu 3
[ 6509.897078][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6509.897081][    C3] Workqueue: netns cleanup_net
[ 6509.897092][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6509.897101][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 6509.897104][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6509.897107][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6509.897109][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6509.897111][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6509.897113][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6509.897114][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6509.897116][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6509.897118][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6509.897122][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6509.897124][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6509.897125][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6509.897127][    C3] PKRU: 55555554
[ 6509.897128][    C3] Call Trace:
[ 6509.897133][    C3]  <NMI>
[ 6509.897137][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 6509.897144][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 6509.897150][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 6509.897156][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 6509.897162][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 6509.897164][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 6509.897170][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6509.897173][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6509.897176][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6509.897180][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6509.897183][    C3]  </NMI>
[ 6509.897184][    C3]  <TASK>
[ 6509.897185][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6509.897189][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6509.897194][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6509.897201][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6509.897204][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6509.897207][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6509.897210][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6509.897216][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6509.897219][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6509.897223][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6509.897226][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6509.897233][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6509.897236][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6509.897240][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6509.897244][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6509.897249][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6509.897253][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6509.897262][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6509.897269][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6509.897273][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6509.897277][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6509.897285][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6509.897293][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6509.897299][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6509.897304][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6509.897309][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6509.897313][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6509.897318][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6509.897326][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6509.897331][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6509.897335][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6509.897342][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6509.897346][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6509.897349][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6509.897354][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6509.897357][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6509.897361][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6509.897365][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6509.897368][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6509.897371][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6509.897375][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6509.897377][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6509.897383][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6509.897388][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6509.897391][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6509.897396][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6509.897399][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6509.897402][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6509.897407][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6509.897410][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6509.897412][ C3] kthread (kernel/kthread.c:388) 
[ 6509.897416][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6509.897418][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6509.897422][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6509.897424][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6509.897434][    C3]  </TASK>
| [ 6518.220230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6518.220612][    C3] rcu: 3-....: (2987097 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=660260
| [ 6518.221194][    C3] rcu: (t=2991313 jiffies g=2723341 q=5640 ncpus=4)
[ 6518.222028][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6518.222660][    C3] Workqueue: netns cleanup_net
[ 6518.222917][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 6518.223189][ C3] Code: 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	41 57                	push   %r15
  1a:	41 56                	push   %r14
  1c:	41 55                	push   %r13
  1e:	41 54                	push   %r12
  20:	55                   	push   %rbp
  21:	53                   	push   %rbx
  22:	48 83 ec 70          	sub    $0x70,%rsp
  26:	9c                   	pushf
  27:	8f 04 24             	pop    (%rsp)
  2a:*	0f 01 ca             	clac		<-- trapping instruction
  2d:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  34:	1f 00 
  36:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3d:	85 c0                	test   %eax,%eax
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	0f 01 ca             	clac
   3:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   a:	1f 00 
   c:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  13:	85 c0                	test   %eax,%eax
  15:	0f                   	.byte 0xf
[ 6518.224188][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 6518.224510][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6518.224922][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6518.225335][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6518.225746][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6518.226161][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6518.226574][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6518.227035][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6518.227380][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6518.227794][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6518.228208][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6518.228626][    C3] PKRU: 55555554
[ 6518.228813][    C3] Call Trace:
[ 6518.228990][    C3]  <IRQ>
[ 6518.229144][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 6518.229430][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 6518.229696][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 6518.229956][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 6518.230253][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 6518.230492][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 6518.230776][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 6518.231056][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 6518.231323][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 6518.231619][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6518.231869][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 6518.232193][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6518.232478][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6518.232774][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6518.233049][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6518.233367][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6518.233643][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6518.233962][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6518.234271][    C3]  </IRQ>
[ 6518.234426][    C3]  <TASK>
[ 6518.234581][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6518.234908][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6518.235217][ C3] ? kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 6518.235461][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6518.235758][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6518.236082][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6518.236388][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6518.236649][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6518.236931][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6518.237224][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6518.237473][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6518.237723][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6518.237965][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6518.238206][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6518.238457][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6518.238764][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6518.239028][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6518.239373][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6518.239657][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6518.239962][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6518.240271][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6518.240569][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6518.240822][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6518.241084][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6518.241332][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6518.241658][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6518.241959][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6518.242285][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6518.242600][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6518.242857][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6518.243111][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6518.243367][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6518.243687][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6518.243937][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6518.244176][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6518.244511][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6518.244769][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6518.245129][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6518.245458][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6518.245754][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6518.246075][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6518.246324][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6518.246561][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6518.246855][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6518.247116][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6518.247367][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6518.247639][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6518.247903][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6518.248144][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6518.248430][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6518.248674][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6518.248922][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6518.249269][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6518.249539][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6518.249815][ C3] kthread (kernel/kthread.c:388) 
[ 6518.250033][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6518.250277][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6518.250515][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6518.250759][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6544.564896][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6544.565391][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6544.565884][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6544.566374][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6544.567356][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6544.567989][    C3] Workqueue: netns cleanup_net
[ 6544.568247][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6544.568585][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 6544.569599][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6544.569920][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6544.570334][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6544.570748][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6544.571162][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6544.571580][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6544.571994][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6544.572463][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6544.572808][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6544.573223][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6544.573636][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6544.574052][    C3] PKRU: 55555554
[ 6544.574240][    C3] Call Trace:
[ 6544.574419][    C3]  <IRQ>
[ 6544.574572][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6544.574846][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6544.575100][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6544.575392][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6544.575675][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6544.575975][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6544.576253][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6544.576571][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6544.576843][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6544.577166][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6544.577474][    C3]  </IRQ>
[ 6544.577629][    C3]  <TASK>
[ 6544.577784][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6544.578112][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6544.578421][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6544.578729][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6544.579052][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6544.579362][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6544.579625][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6544.579908][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6544.580204][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6544.580450][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6544.580702][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6544.580944][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6544.581183][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6544.581438][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6544.581749][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6544.582013][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6544.582361][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6544.582640][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6544.582942][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6544.583248][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6544.583548][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6544.583800][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6544.584062][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6544.584313][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6544.584641][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6544.584941][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6544.585266][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6544.585584][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6544.585843][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6544.586096][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6544.586354][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6544.586672][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6544.586922][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6544.587165][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6544.587502][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6544.587758][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6544.588113][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6544.588445][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6544.588739][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6544.589063][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6544.589314][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6544.589555][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6544.589853][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6544.590115][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6544.590366][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6544.590638][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6544.590901][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6544.591142][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6544.591430][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6544.591674][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6544.591923][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6544.592270][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6544.592539][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6544.592807][ C3] kthread (kernel/kthread.c:388) 
[ 6544.593024][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6544.593268][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6544.593504][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6544.593746][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6572.564894][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6572.565391][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6572.565882][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6572.566373][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6572.567345][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6572.567977][    C3] Workqueue: netns cleanup_net
[ 6572.568232][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6572.568503][ C3] 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
All code
========
   0:	90                   	nop
   1:	66 0f 1f 00          	nopw   (%rax)
   5:	41 57                	push   %r15
   7:	41 56                	push   %r14
   9:	41 55                	push   %r13
   b:	41 54                	push   %r12
   d:	55                   	push   %rbp
   e:	53                   	push   %rbx
   f:	48 83 ec 70          	sub    $0x70,%rsp
  13:	9c                   	pushf
  14:	8f 04 24             	pop    (%rsp)
  17:	0f 01 ca             	clac
  1a:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  21:	1f 00 
  23:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 b7 00 00 00    	jne    0xe9
  32:	48 89 fd             	mov    %rdi,%rbp
  35:	49 89 f6             	mov    %rsi,%r14
  38:	89 d3                	mov    %edx,%ebx
  3a:	49 89 cd             	mov    %rcx,%r13
  3d:	e8                   	.byte 0xe8
  3e:	0f                   	.byte 0xf
  3f:	f7                   	.byte 0xf7

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 b7 00 00 00    	jne    0xbf
   8:	48 89 fd             	mov    %rdi,%rbp
   b:	49 89 f6             	mov    %rsi,%r14
   e:	89 d3                	mov    %edx,%ebx
  10:	49 89 cd             	mov    %rcx,%r13
  13:	e8                   	.byte 0xe8
  14:	0f                   	.byte 0xf
  15:	f7                   	.byte 0xf7
[ 6572.569513][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 6572.569831][    C3] RAX: 0000000000000000 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 6572.570244][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6572.570653][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 6572.571067][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6572.571480][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 6572.571893][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6572.572357][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6572.572700][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6572.573116][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6572.573535][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6572.573944][    C3] PKRU: 55555554
[ 6572.574133][    C3] Call Trace:
[ 6572.574312][    C3]  <IRQ>
[ 6572.574466][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6572.574738][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6572.574990][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6572.575279][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6572.575560][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6572.575858][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6572.576135][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6572.576453][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6572.576724][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6572.577045][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6572.577350][    C3]  </IRQ>
[ 6572.577507][    C3]  <TASK>
[ 6572.577661][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6572.577989][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6572.578289][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6572.578530][ C3] ? kasan_report (mm/kasan/report.c:579) 
[ 6572.578766][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 6572.579024][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6572.579318][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6572.579647][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6572.579955][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6572.580216][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6572.580499][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6572.580795][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6572.581043][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6572.581291][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6572.581530][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6572.581771][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6572.582021][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6572.582330][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6572.582599][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6572.582943][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6572.583221][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6572.583522][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6572.583828][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6572.584125][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6572.584380][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6572.584641][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6572.584888][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6572.585214][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6572.585517][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6572.585842][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6572.586156][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6572.586413][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6572.586669][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6572.586923][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6572.587244][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6572.587493][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6572.587733][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6572.588066][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6572.588322][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6572.588674][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6572.589003][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6572.589300][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6572.589629][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6572.589877][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6572.590113][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6572.590411][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6572.590671][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6572.590918][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6572.591189][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6572.591452][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6572.591693][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6572.591977][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6572.592219][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6572.592468][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6572.592812][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6572.593082][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6572.593351][ C3] kthread (kernel/kthread.c:388) 
[ 6572.593568][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6572.593809][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6572.594045][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6572.594290][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6572.594546][    C3]  </TASK>
| [ 6596.253240][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6596.253614][    C3] rcu: 3-....: (3065040 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=677334
| [ 6596.254179][    C3] rcu: (t=3069346 jiffies g=2723341 q=5646 ncpus=4)
[ 6596.255000][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6596.255620][    C3] Workqueue: netns cleanup_net
[ 6596.255874][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6596.256166][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 6596.257166][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 6596.257479][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 6596.257899][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6596.258313][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6596.258725][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6596.259135][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 6596.259555][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6596.260021][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6596.260366][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6596.260778][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6596.261190][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6596.261604][    C3] PKRU: 55555554
[ 6596.261793][    C3] Call Trace:
[ 6596.261969][    C3]  <IRQ>
[ 6596.262122][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 6596.262408][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 6596.262669][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 6596.262927][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 6596.263225][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 6596.263466][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 6596.263745][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 6596.264025][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 6596.264293][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 6596.264587][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6596.264839][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 6596.265161][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6596.265443][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6596.265742][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6596.266017][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6596.266337][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6596.266607][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6596.266926][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6596.267235][    C3]  </IRQ>
[ 6596.267391][    C3]  <TASK>
[ 6596.267547][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6596.267871][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6596.268169][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6596.268470][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6596.268717][ C3] kasan_report (mm/kasan/report.c:585) 
[ 6596.268947][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 6596.269206][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6596.269503][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6596.269827][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6596.270133][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6596.270393][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6596.270674][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6596.270967][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6596.271215][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6596.271465][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6596.271702][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6596.271942][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6596.272197][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6596.272504][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6596.272770][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6596.273116][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6596.273394][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6596.273692][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6596.273998][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6596.274296][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6596.274548][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6596.274809][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6596.275059][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6596.275386][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6596.275683][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6596.276007][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6596.276322][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6596.276580][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6596.276831][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6596.277083][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6596.277404][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6596.277654][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6596.277893][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6596.278228][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6596.278481][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6596.278834][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6596.279160][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6596.279462][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6596.279786][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6596.280033][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6596.280267][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6596.280561][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6596.280819][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6596.281064][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6596.281340][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6596.281601][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6596.281842][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6596.282124][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6596.282370][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6596.282618][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6596.282963][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6596.283231][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6596.283499][ C3] kthread (kernel/kthread.c:388) 
[ 6596.283712][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6596.283956][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6596.284190][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6596.284434][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6608.199254][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 3080997 jiffies s: 467069 root: 0x8/.
| [ 6608.199926][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6608.200307][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 6608.200591][    C3] NMI backtrace for cpu 3
[ 6608.200603][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6608.200606][    C3] Workqueue: netns cleanup_net
[ 6608.200614][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 6608.200620][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 6608.200624][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 6608.200626][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 6608.200628][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6608.200629][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6608.200631][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 6608.200633][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 6608.200634][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6608.200636][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6608.200640][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6608.200642][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6608.200643][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6608.200644][    C3] PKRU: 55555554
[ 6608.200646][    C3] Call Trace:
[ 6608.200649][    C3]  <NMI>
[ 6608.200652][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 6608.200658][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 6608.200663][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 6608.200670][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 6608.200676][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 6608.200678][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 6608.200683][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6608.200689][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6608.200693][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 6608.200696][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 6608.200699][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 6608.200702][    C3]  </NMI>
[ 6608.200703][    C3]  <TASK>
[ 6608.200707][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6608.200711][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6608.200715][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6608.200720][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6608.200725][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6608.200728][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6608.200732][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6608.200734][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6608.200741][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6608.200744][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6608.200748][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6608.200751][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6608.200757][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6608.200760][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6608.200764][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6608.200767][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6608.200772][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6608.200775][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6608.200781][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6608.200788][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6608.200792][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6608.200795][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6608.200803][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6608.200810][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6608.200816][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6608.200820][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6608.200825][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6608.200829][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6608.200834][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6608.200842][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6608.200847][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6608.200851][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6608.200858][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6608.200862][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6608.200865][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6608.200869][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6608.200873][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6608.200876][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6608.200880][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6608.200883][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6608.200886][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6608.200889][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6608.200892][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6608.200897][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6608.200901][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6608.200904][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6608.200909][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6608.200912][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6608.200915][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6608.200919][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6608.200922][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6608.200925][ C3] kthread (kernel/kthread.c:388) 
[ 6608.200927][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6608.200930][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6608.200934][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6608.200937][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6632.564894][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6632.565392][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6632.565885][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6632.566376][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6632.567354][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6632.567991][    C3] Workqueue: netns cleanup_net
[ 6632.568248][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6632.568520][ C3] 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
All code
========
   0:	90                   	nop
   1:	66 0f 1f 00          	nopw   (%rax)
   5:	41 57                	push   %r15
   7:	41 56                	push   %r14
   9:	41 55                	push   %r13
   b:	41 54                	push   %r12
   d:	55                   	push   %rbp
   e:	53                   	push   %rbx
   f:	48 83 ec 70          	sub    $0x70,%rsp
  13:	9c                   	pushf
  14:	8f 04 24             	pop    (%rsp)
  17:	0f 01 ca             	clac
  1a:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  21:	1f 00 
  23:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 b7 00 00 00    	jne    0xe9
  32:	48 89 fd             	mov    %rdi,%rbp
  35:	49 89 f6             	mov    %rsi,%r14
  38:	89 d3                	mov    %edx,%ebx
  3a:	49 89 cd             	mov    %rcx,%r13
  3d:	e8                   	.byte 0xe8
  3e:	0f                   	.byte 0xf
  3f:	f7                   	.byte 0xf7

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 b7 00 00 00    	jne    0xbf
   8:	48 89 fd             	mov    %rdi,%rbp
   b:	49 89 f6             	mov    %rsi,%r14
   e:	89 d3                	mov    %edx,%ebx
  10:	49 89 cd             	mov    %rcx,%r13
  13:	e8                   	.byte 0xe8
  14:	0f                   	.byte 0xf
  15:	f7                   	.byte 0xf7
[ 6632.569531][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 6632.569850][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6632.570264][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6632.570678][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6632.571094][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6632.571512][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 6632.571927][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6632.572391][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6632.572733][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6632.573148][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6632.573564][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6632.573977][    C3] PKRU: 55555554
[ 6632.574165][    C3] Call Trace:
[ 6632.574344][    C3]  <IRQ>
[ 6632.574499][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6632.574773][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6632.575026][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6632.575315][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6632.575597][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6632.575897][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6632.576174][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6632.576495][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6632.576768][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6632.577090][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6632.577398][    C3]  </IRQ>
[ 6632.577554][    C3]  <TASK>
[ 6632.577710][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6632.578037][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6632.578346][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6632.578589][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6632.578886][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6632.579213][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6632.579523][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6632.579785][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6632.580067][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6632.580366][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6632.580614][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6632.580867][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6632.581107][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6632.581348][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6632.581601][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6632.581912][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6632.582179][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6632.582526][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6632.582804][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6632.583106][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6632.583414][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6632.583716][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6632.583968][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6632.584229][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6632.584480][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6632.584809][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6632.585110][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6632.585436][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6632.585758][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6632.586017][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6632.586272][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6632.586526][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6632.586846][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6632.587096][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6632.587338][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6632.587675][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6632.587927][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6632.588283][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6632.588613][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6632.588907][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6632.589241][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6632.589492][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6632.589727][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6632.590028][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6632.590292][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6632.590541][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6632.590814][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6632.591074][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6632.591317][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6632.591599][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6632.591845][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6632.592096][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6632.592442][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6632.592713][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6632.592982][ C3] kthread (kernel/kthread.c:388) 
[ 6632.593197][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6632.593443][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6632.593680][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6632.593921][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6660.564904][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6660.565401][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6660.565893][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6660.566383][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6660.567361][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6660.567992][    C3] Workqueue: netns cleanup_net
[ 6660.568251][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6660.568531][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 6660.569540][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 6660.569858][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 6660.570271][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6660.570683][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6660.571095][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6660.571509][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 6660.571922][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6660.572384][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6660.572731][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6660.573146][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6660.573561][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6660.573973][    C3] PKRU: 55555554
[ 6660.574165][    C3] Call Trace:
[ 6660.574353][    C3]  <IRQ>
[ 6660.574503][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6660.574790][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6660.575042][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6660.575329][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6660.575609][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6660.575907][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6660.576182][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6660.576502][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6660.576772][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6660.577092][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6660.577397][    C3]  </IRQ>
[ 6660.577553][    C3]  <TASK>
[ 6660.577708][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6660.578036][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6660.578335][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6660.578634][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6660.578881][ C3] kasan_report (mm/kasan/report.c:585) 
[ 6660.579114][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6660.579422][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 6660.579680][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6660.579971][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6660.580297][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6660.580601][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6660.580859][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6660.581141][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6660.581436][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6660.581683][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6660.581936][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6660.582174][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6660.582423][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6660.582674][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6660.582981][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6660.583246][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6660.583590][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6660.583868][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6660.584169][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6660.584476][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6660.584772][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6660.585023][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6660.585286][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6660.585534][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6660.585861][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6660.586163][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6660.586489][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6660.586804][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6660.587060][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6660.587315][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6660.587569][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6660.587889][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6660.588137][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6660.588379][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6660.588712][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6660.588965][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6660.589322][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6660.589650][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6660.589946][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6660.590268][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6660.590515][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6660.590751][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6660.591044][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6660.591305][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6660.591552][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6660.591822][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6660.592085][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6660.592327][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6660.592611][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6660.592859][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6660.593100][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6660.593433][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6660.593697][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6660.593959][ C3] kthread (kernel/kthread.c:388) 
[ 6660.594171][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6660.594406][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6660.594637][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6660.594873][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6660.595141][    C3]  </TASK>
| [ 6674.288230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6674.288608][    C3] rcu: 3-....: (3142957 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=695073
| [ 6674.289196][    C3] rcu: (t=3147381 jiffies g=2723341 q=5646 ncpus=4)
[ 6674.290032][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6674.290669][    C3] Workqueue: netns cleanup_net
[ 6674.290927][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 6674.291201][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 6674.292203][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 6674.292524][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 6674.292935][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6674.293347][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6674.293761][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 6674.294174][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 6674.294586][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6674.295049][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6674.295394][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6674.295809][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6674.296223][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6674.296636][    C3] PKRU: 55555554
[ 6674.296824][    C3] Call Trace:
[ 6674.297002][    C3]  <IRQ>
[ 6674.297155][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 6674.297440][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 6674.297701][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 6674.297961][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 6674.298261][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 6674.298499][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 6674.298780][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 6674.299065][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 6674.299334][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 6674.299633][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6674.299885][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 6674.300208][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6674.300492][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6674.300788][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6674.301064][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6674.301383][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6674.301653][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6674.301976][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6674.302287][    C3]  </IRQ>
[ 6674.302442][    C3]  <TASK>
[ 6674.302598][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6674.302922][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6674.303227][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6674.303525][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 6674.303769][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 6674.304028][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6674.304319][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6674.304643][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6674.304951][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6674.305211][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6674.305494][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6674.305788][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6674.306037][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6674.306290][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6674.306527][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6674.306771][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6674.307023][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6674.307331][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6674.307600][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6674.307946][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6674.308223][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6674.308522][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6674.308827][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6674.309129][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6674.309382][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6674.309643][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6674.309892][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6674.310221][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6674.310519][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6674.310844][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6674.311159][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6674.311418][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6674.311669][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6674.311921][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6674.312241][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6674.312491][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6674.312728][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6674.313061][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6674.313314][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6674.313666][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6674.313992][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6674.314288][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6674.314611][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6674.314857][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6674.315091][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6674.315384][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6674.315644][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6674.315890][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6674.316159][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6674.316421][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6674.316661][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6674.316943][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6674.317188][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6674.317440][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6674.317785][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6674.318052][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6674.318320][ C3] kthread (kernel/kthread.c:388) 
[ 6674.318534][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6674.318777][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6674.319015][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6674.319260][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6700.564903][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6700.565398][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6700.565898][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6700.566388][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6700.567366][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6700.567998][    C3] Workqueue: netns cleanup_net
[ 6700.568256][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6700.568528][ C3] 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
All code
========
   0:	90                   	nop
   1:	66 0f 1f 00          	nopw   (%rax)
   5:	41 57                	push   %r15
   7:	41 56                	push   %r14
   9:	41 55                	push   %r13
   b:	41 54                	push   %r12
   d:	55                   	push   %rbp
   e:	53                   	push   %rbx
   f:	48 83 ec 70          	sub    $0x70,%rsp
  13:	9c                   	pushf
  14:	8f 04 24             	pop    (%rsp)
  17:	0f 01 ca             	clac
  1a:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  21:	1f 00 
  23:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 b7 00 00 00    	jne    0xe9
  32:	48 89 fd             	mov    %rdi,%rbp
  35:	49 89 f6             	mov    %rsi,%r14
  38:	89 d3                	mov    %edx,%ebx
  3a:	49 89 cd             	mov    %rcx,%r13
  3d:	e8                   	.byte 0xe8
  3e:	0f                   	.byte 0xf
  3f:	f7                   	.byte 0xf7

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 b7 00 00 00    	jne    0xbf
   8:	48 89 fd             	mov    %rdi,%rbp
   b:	49 89 f6             	mov    %rsi,%r14
   e:	89 d3                	mov    %edx,%ebx
  10:	49 89 cd             	mov    %rcx,%r13
  13:	e8                   	.byte 0xe8
  14:	0f                   	.byte 0xf
  15:	f7                   	.byte 0xf7
[ 6700.569540][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 6700.569858][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6700.570270][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6700.570684][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6700.571095][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6700.571507][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 6700.571918][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6700.572380][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6700.572724][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6700.573138][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6700.573551][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6700.573962][    C3] PKRU: 55555554
[ 6700.574150][    C3] Call Trace:
[ 6700.574329][    C3]  <IRQ>
[ 6700.574482][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6700.574753][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6700.575007][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6700.575294][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6700.575577][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6700.575873][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6700.576147][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6700.576466][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6700.576741][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6700.577062][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6700.577368][    C3]  </IRQ>
[ 6700.577523][    C3]  <TASK>
[ 6700.577677][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6700.578004][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6700.578312][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6700.578553][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6700.578854][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6700.579177][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6700.579483][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6700.579742][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6700.580023][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6700.580323][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6700.580570][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6700.580819][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6700.581059][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6700.581300][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6700.581550][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6700.581858][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6700.582122][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6700.582471][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6700.582749][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6700.583053][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6700.583359][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6700.583655][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6700.583910][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6700.584172][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6700.584422][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6700.584748][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6700.585049][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6700.585377][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6700.585691][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6700.585947][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6700.586200][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6700.586454][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6700.586774][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6700.587022][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6700.587263][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6700.587597][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6700.587850][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6700.588200][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6700.588530][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6700.588830][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6700.589152][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6700.589401][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6700.589637][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6700.589929][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6700.590189][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6700.590437][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6700.590709][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6700.590970][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6700.591210][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6700.591495][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6700.591738][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6700.591985][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6700.592330][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6700.592600][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6700.592868][ C3] kthread (kernel/kthread.c:388) 
[ 6700.593084][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6700.593328][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6700.593565][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6700.593809][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6706.503247][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 3179301 jiffies s: 467069 root: 0x8/.
| [ 6706.503916][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6706.504295][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 6706.504576][    C3] NMI backtrace for cpu 3
[ 6706.504587][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6706.504590][    C3] Workqueue: netns cleanup_net
[ 6706.504596][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6706.504602][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 6706.504605][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 6706.504607][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 6706.504609][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6706.504611][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 6706.504613][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6706.504615][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 6706.504616][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6706.504618][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6706.504622][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6706.504624][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6706.504625][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6706.504627][    C3] PKRU: 55555554
[ 6706.504628][    C3] Call Trace:
[ 6706.504630][    C3]  <NMI>
[ 6706.504632][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 6706.504638][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 6706.504643][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 6706.504649][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 6706.504654][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 6706.504657][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 6706.504661][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6706.504667][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6706.504671][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6706.504674][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6706.504677][    C3]  </NMI>
[ 6706.504678][    C3]  <TASK>
[ 6706.504680][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6706.504684][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 6706.504690][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6706.504694][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6706.504698][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6706.504702][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6706.504708][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6706.504710][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6706.504714][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6706.504716][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6706.504721][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6706.504724][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6706.504729][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6706.504731][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6706.504737][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6706.504741][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6706.504744][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6706.504748][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6706.504753][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6706.504756][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6706.504762][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6706.504769][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6706.504773][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6706.504776][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6706.504783][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6706.504790][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6706.504796][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6706.504801][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6706.504806][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6706.504810][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6706.504814][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6706.504822][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6706.504826][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6706.504830][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6706.504836][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6706.504840][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6706.504842][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6706.504847][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6706.504850][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6706.504853][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6706.504856][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6706.504860][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6706.504862][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6706.504866][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6706.504868][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6706.504873][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6706.504877][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6706.504881][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6706.504886][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6706.504889][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6706.504893][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6706.504896][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6706.504899][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6706.504902][ C3] kthread (kernel/kthread.c:388) 
[ 6706.504904][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6706.504907][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6706.504910][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6706.504912][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6732.564902][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6732.565395][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6732.565890][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6732.566380][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6732.567357][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6732.567988][    C3] Workqueue: netns cleanup_net
[ 6732.568243][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6732.568579][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 6732.569594][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6732.569911][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6732.570327][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6732.570739][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6732.571150][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6732.571567][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6732.571982][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6732.572444][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6732.572790][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6732.573203][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6732.573621][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6732.574042][    C3] PKRU: 55555554
[ 6732.574230][    C3] Call Trace:
[ 6732.574406][    C3]  <IRQ>
[ 6732.574561][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6732.574836][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6732.575087][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6732.575378][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6732.575660][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6732.575958][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6732.576236][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6732.576554][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6732.576825][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6732.577147][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6732.577456][    C3]  </IRQ>
[ 6732.577610][    C3]  <TASK>
[ 6732.577766][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6732.578091][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6732.578398][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6732.578710][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6732.579034][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6732.579341][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6732.579602][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6732.579884][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6732.580181][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6732.580429][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6732.580679][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6732.580921][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6732.581161][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6732.581413][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6732.581723][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6732.581988][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6732.582335][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6732.582613][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6732.582916][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6732.583221][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6732.583523][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6732.583777][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6732.584038][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6732.584286][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6732.584618][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6732.584918][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6732.585244][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6732.585562][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6732.585820][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6732.586075][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6732.586331][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6732.586651][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6732.586900][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6732.587142][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6732.587479][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6732.587733][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6732.588085][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6732.588416][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6732.588717][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6732.589040][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6732.589290][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6732.589527][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6732.589827][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6732.590089][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6732.590338][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6732.590611][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6732.590874][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6732.591112][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6732.591400][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6732.591642][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6732.591892][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6732.592238][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6732.592506][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6732.592776][ C3] kthread (kernel/kthread.c:388) 
[ 6732.592994][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6732.593237][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6732.593474][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6732.593717][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6732.593975][    C3]  </TASK>
| [ 6752.323231][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6752.323610][    C3] rcu: 3-....: (3220876 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=712588
| [ 6752.324188][    C3] rcu: (t=3225416 jiffies g=2723341 q=5646 ncpus=4)
[ 6752.325026][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6752.325660][    C3] Workqueue: netns cleanup_net
[ 6752.325918][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6752.326200][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 6752.327201][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 6752.327519][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 6752.327929][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6752.328340][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6752.328756][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6752.329169][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 6752.329580][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6752.330042][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6752.330386][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6752.330799][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6752.331213][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6752.331625][    C3] PKRU: 55555554
[ 6752.331814][    C3] Call Trace:
[ 6752.331991][    C3]  <IRQ>
[ 6752.332145][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 6752.332429][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 6752.332690][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 6752.332950][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 6752.333247][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 6752.333487][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 6752.333766][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 6752.334045][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 6752.334312][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 6752.334607][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6752.334857][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 6752.335179][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6752.335462][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6752.335759][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6752.336033][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6752.336350][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6752.336621][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6752.336941][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6752.337250][    C3]  </IRQ>
[ 6752.337405][    C3]  <TASK>
[ 6752.337559][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6752.337885][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6752.338194][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6752.338503][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 6752.338750][ C3] kasan_report (mm/kasan/report.c:585) 
[ 6752.338980][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6752.339291][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6752.339588][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6752.339914][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6752.340219][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6752.340480][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6752.340762][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6752.341059][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6752.341306][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6752.341554][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6752.341793][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6752.342033][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6752.342285][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6752.342597][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6752.342863][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6752.343206][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6752.343483][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6752.343785][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6752.344090][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6752.344389][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6752.344643][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6752.344904][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6752.345151][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6752.345479][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6752.345780][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6752.346106][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6752.346421][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6752.346679][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6752.346933][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6752.347188][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6752.347509][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6752.347757][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6752.347998][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6752.348333][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6752.348593][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6752.348946][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6752.349275][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6752.349570][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6752.349893][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6752.350141][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6752.350376][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6752.350669][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6752.350929][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6752.351177][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6752.351449][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6752.351711][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6752.351949][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6752.352235][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6752.352476][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6752.352724][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6752.353068][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6752.353336][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6752.353605][ C3] kthread (kernel/kthread.c:388) 
[ 6752.353822][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6752.354064][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6752.354301][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6752.354542][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6776.564904][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6776.565407][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6776.565885][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6776.566384][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6776.567373][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6776.567989][    C3] Workqueue: netns cleanup_net
[ 6776.568258][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:579) 
[ 6776.568529][ C3] Code: 83 c4 68 5b 5d 41 5c c3 cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	83 c4 68             	add    $0x68,%esp
   3:	5b                   	pop    %rbx
   4:	5d                   	pop    %rbp
   5:	41 5c                	pop    %r12
   7:	c3                   	ret
   8:	cc                   	int3
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  13:	00 
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	66 0f 1f 00          	nopw   (%rax)
  28:	41 57                	push   %r15
  2a:*	41 56                	push   %r14		<-- trapping instruction
  2c:	41 55                	push   %r13
  2e:	41 54                	push   %r12
  30:	55                   	push   %rbp
  31:	53                   	push   %rbx
  32:	48 83 ec 70          	sub    $0x70,%rsp
  36:	9c                   	pushf
  37:	8f 04 24             	pop    (%rsp)
  3a:	0f 01 ca             	clac
  3d:	65                   	gs
  3e:	4c                   	rex.WR
  3f:	8b                   	.byte 0x8b

Code starting with the faulting instruction
===========================================
   0:	41 56                	push   %r14
   2:	41 55                	push   %r13
   4:	41 54                	push   %r12
   6:	55                   	push   %rbp
   7:	53                   	push   %rbx
   8:	48 83 ec 70          	sub    $0x70,%rsp
   c:	9c                   	pushf
   d:	8f 04 24             	pop    (%rsp)
  10:	0f 01 ca             	clac
  13:	65                   	gs
  14:	4c                   	rex.WR
  15:	8b                   	.byte 0x8b
[ 6776.569531][    C3] RSP: 0018:ffffc9000051f4c0 EFLAGS: 00000246
[ 6776.569848][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6776.570260][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6776.570671][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6776.571079][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6776.571495][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6776.571907][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6776.572369][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6776.572711][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6776.573122][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6776.573536][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6776.573948][    C3] PKRU: 55555554
[ 6776.574136][    C3] Call Trace:
[ 6776.574312][    C3]  <IRQ>
[ 6776.574467][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6776.574738][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6776.574990][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6776.575279][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6776.575559][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6776.575857][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6776.576131][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6776.576446][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6776.576717][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6776.577036][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6776.577344][    C3]  </IRQ>
[ 6776.577498][    C3]  <TASK>
[ 6776.577655][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6776.577981][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6776.578284][ C3] ? kasan_report (mm/kasan/report.c:579) 
[ 6776.578525][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6776.578818][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6776.579141][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6776.579448][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6776.579706][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6776.579988][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6776.580281][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6776.580528][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6776.580779][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6776.581015][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6776.581257][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6776.581507][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6776.581814][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6776.582085][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6776.582424][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6776.582693][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6776.582985][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6776.583285][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6776.583572][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6776.583815][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6776.584086][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6776.584334][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6776.584662][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6776.584960][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6776.585285][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6776.585602][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6776.585852][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6776.586096][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6776.586343][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6776.586656][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6776.586899][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6776.587129][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6776.587455][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6776.587700][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6776.588065][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6776.588400][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6776.588695][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6776.589016][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6776.589266][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6776.589499][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6776.589791][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6776.590052][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6776.590299][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6776.590569][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6776.590831][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6776.591071][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6776.591354][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6776.591599][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6776.591845][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6776.592189][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6776.592458][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6776.592725][ C3] kthread (kernel/kthread.c:388) 
[ 6776.592939][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6776.593182][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6776.593417][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6776.593660][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6804.564906][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6804.565401][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6804.565897][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6804.566387][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6804.567366][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6804.567995][    C3] Workqueue: netns cleanup_net
[ 6804.568257][ C3] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6804.568590][ C3] Code: 0f 1f 44 00 00 49 89 fd 49 89 fc 41 be 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 <be> 04 00 00 00 48 89 ef e8 d0 79 e9 fd 41 0f b6 45 00 41 38 c4 7c
All code
========
   0:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   5:	49 89 fd             	mov    %rdi,%r13
   8:	49 89 fc             	mov    %rdi,%r12
   b:	41 be 01 00 00 00    	mov    $0x1,%r14d
  11:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  18:	fc ff df 
  1b:	49 c1 ed 03          	shr    $0x3,%r13
  1f:	41 83 e4 07          	and    $0x7,%r12d
  23:	49 01 c5             	add    %rax,%r13
  26:	41 83 c4 03          	add    $0x3,%r12d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 d0 79 e9 fd       	call   0xfffffffffde97a07
  37:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  3c:	41 38 c4             	cmp    %al,%r12b
  3f:	7c                   	.byte 0x7c

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 d0 79 e9 fd       	call   0xfffffffffde979dd
   d:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  12:	41 38 c4             	cmp    %al,%r12b
  15:	7c                   	.byte 0x7c
[ 6804.569595][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6804.569918][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6804.570331][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6804.570746][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6804.571159][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6804.571576][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6804.571989][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6804.572454][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6804.572799][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6804.573214][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6804.573628][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6804.574041][    C3] PKRU: 55555554
[ 6804.574229][    C3] Call Trace:
[ 6804.574409][    C3]  <IRQ>
[ 6804.574566][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6804.574840][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6804.575094][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6804.575384][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6804.575667][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6804.575964][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6804.576241][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6804.576561][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6804.576833][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6804.577155][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6804.577463][    C3]  </IRQ>
[ 6804.577618][    C3]  <TASK>
[ 6804.577773][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6804.578102][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6804.578416][ C3] ? queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6804.578715][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6804.579040][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6804.579352][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6804.579612][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6804.579894][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6804.580190][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6804.580439][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6804.580691][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6804.580932][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6804.581170][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6804.581425][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6804.581734][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6804.582004][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6804.582356][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6804.582634][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6804.582935][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6804.583241][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6804.583542][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6804.583795][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6804.584056][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6804.584308][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6804.584637][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6804.584935][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6804.585264][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6804.585584][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6804.585842][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6804.586097][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6804.586350][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6804.586671][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6804.586922][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6804.587161][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6804.587497][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6804.587750][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6804.588104][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6804.588439][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6804.588734][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6804.589057][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6804.589307][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6804.589540][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6804.589840][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6804.590100][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6804.590345][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6804.590617][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6804.590879][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6804.591121][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6804.591405][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6804.591650][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6804.591898][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6804.592243][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6804.592512][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6804.592781][ C3] kthread (kernel/kthread.c:388) 
[ 6804.592996][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6804.593240][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6804.593475][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6804.593717][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6804.807256][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 3277605 jiffies s: 467069 root: 0x8/.
| [ 6804.807931][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6804.808320][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 6804.808609][    C3] NMI backtrace for cpu 3
[ 6804.808617][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6804.808620][    C3] Workqueue: netns cleanup_net
[ 6804.808623][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6804.808628][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 6804.808631][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6804.808633][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6804.808635][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6804.808636][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6804.808637][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6804.808639][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6804.808640][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6804.808642][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6804.808646][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6804.808648][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6804.808649][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6804.808650][    C3] PKRU: 55555554
[ 6804.808651][    C3] Call Trace:
[ 6804.808654][    C3]  <NMI>
[ 6804.808655][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 6804.808660][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 6804.808665][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 6804.808671][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 6804.808675][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 6804.808677][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 6804.808682][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6804.808685][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6804.808689][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6804.808693][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6804.808696][    C3]  </NMI>
[ 6804.808697][    C3]  <TASK>
[ 6804.808699][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6804.808703][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6804.808707][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6804.808711][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6804.808714][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6804.808717][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6804.808720][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6804.808724][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6804.808726][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6804.808730][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6804.808733][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6804.808737][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6804.808740][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6804.808743][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6804.808747][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6804.808751][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6804.808754][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6804.808759][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6804.808762][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6804.808766][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6804.808768][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6804.808774][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6804.808781][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6804.808787][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6804.808791][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6804.808795][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6804.808798][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6804.808802][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6804.808809][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6804.808812][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6804.808815][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6804.808819][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6804.808822][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6804.808825][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6804.808829][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6804.808832][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6804.808835][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6804.808838][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6804.808841][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6804.808843][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6804.808847][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6804.808849][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6804.808853][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6804.808857][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6804.808861][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6804.808865][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6804.808869][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6804.808872][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6804.808876][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6804.808879][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6804.808882][ C3] kthread (kernel/kthread.c:388) 
[ 6804.808884][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6804.808886][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6804.808888][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6804.808891][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6804.808897][    C3]  </TASK>
| [ 6830.358230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6830.358615][    C3] rcu: 3-....: (3298797 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=729778
| [ 6830.359196][    C3] rcu: (t=3303451 jiffies g=2723341 q=5646 ncpus=4)
[ 6830.360033][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6830.360674][    C3] Workqueue: netns cleanup_net
[ 6830.360932][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 6830.361206][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 6830.362209][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 6830.362527][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 6830.362940][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6830.363353][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6830.363763][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 6830.364178][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 6830.364590][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6830.365051][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6830.365396][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6830.365809][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6830.366222][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6830.366634][    C3] PKRU: 55555554
[ 6830.366822][    C3] Call Trace:
[ 6830.367000][    C3]  <IRQ>
[ 6830.367156][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 6830.367441][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 6830.367703][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 6830.367962][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 6830.368264][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 6830.368504][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 6830.368783][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 6830.369060][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 6830.369327][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 6830.369629][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6830.369879][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 6830.370199][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6830.370484][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6830.370780][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6830.371055][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6830.371373][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6830.371643][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6830.371963][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6830.372272][    C3]  </IRQ>
[ 6830.372427][    C3]  <TASK>
[ 6830.372582][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6830.372908][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6830.373212][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6830.373509][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 6830.373751][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6830.374048][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 6830.374309][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6830.374601][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6830.374923][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6830.375231][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6830.375491][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6830.375770][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6830.376067][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6830.376312][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6830.376562][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6830.376801][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6830.377039][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6830.377291][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6830.377600][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6830.377864][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6830.378214][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6830.378491][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6830.378792][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6830.379095][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6830.379403][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6830.379654][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6830.379915][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6830.380163][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6830.380491][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6830.380790][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6830.381113][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6830.381429][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6830.381687][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6830.381941][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6830.382194][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6830.382512][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6830.382763][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6830.383003][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6830.383338][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6830.383590][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6830.383942][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6830.384271][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6830.384564][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6830.384887][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6830.385134][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6830.385368][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6830.385663][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6830.385922][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6830.386168][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6830.386441][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6830.386702][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6830.386940][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6830.387224][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6830.387470][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6830.387717][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6830.388061][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6830.388337][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6830.388603][ C3] kthread (kernel/kthread.c:388) 
[ 6830.388821][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6830.389064][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6830.389301][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6830.389540][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6856.564905][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6856.565405][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6856.565902][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6856.566394][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6856.567376][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6856.568013][    C3] Workqueue: netns cleanup_net
[ 6856.568271][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6856.568543][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 6856.569545][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 6856.569863][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6856.570276][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6856.570693][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6856.571105][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6856.571519][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 6856.571930][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6856.572394][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6856.572739][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6856.573153][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6856.573566][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6856.573976][    C3] PKRU: 55555554
[ 6856.574165][    C3] Call Trace:
[ 6856.574349][    C3]  <IRQ>
[ 6856.574503][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6856.574776][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6856.575029][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6856.575317][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6856.575600][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6856.575896][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6856.576172][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6856.576491][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6856.576762][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6856.577083][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6856.577391][    C3]  </IRQ>
[ 6856.577545][    C3]  <TASK>
[ 6856.577700][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6856.578033][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6856.578342][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6856.578584][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6856.578879][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6856.579204][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6856.579510][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6856.579780][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6856.580064][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6856.580364][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6856.580611][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6856.580861][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6856.581100][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6856.581347][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6856.581599][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6856.581908][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6856.582172][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6856.582518][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6856.582798][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6856.583100][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6856.583407][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6856.583704][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6856.583957][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6856.584220][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6856.584470][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6856.584797][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6856.585098][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6856.585426][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6856.585740][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6856.585997][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6856.586252][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6856.586506][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6856.586827][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6856.587075][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6856.587317][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6856.587651][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6856.587904][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6856.588264][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6856.588592][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6856.588889][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6856.589211][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6856.589465][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6856.589702][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6856.589995][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6856.590257][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6856.590504][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6856.590776][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6856.591039][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6856.591281][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6856.591565][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6856.591807][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6856.592055][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6856.592400][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6856.592670][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6856.592942][ C3] kthread (kernel/kthread.c:388) 
[ 6856.593160][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6856.593404][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6856.593640][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6856.593883][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6884.564910][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6884.565405][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6884.565897][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6884.566386][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6884.567367][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6884.568009][    C3] Workqueue: netns cleanup_net
[ 6884.568265][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6884.568602][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 6884.569607][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6884.569925][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6884.570339][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6884.570750][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6884.571162][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6884.571581][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6884.571994][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6884.572457][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6884.572799][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6884.573212][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6884.573628][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6884.574040][    C3] PKRU: 55555554
[ 6884.574229][    C3] Call Trace:
[ 6884.574407][    C3]  <IRQ>
[ 6884.574561][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6884.574833][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6884.575087][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6884.575375][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6884.575656][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6884.575956][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6884.576230][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6884.576548][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6884.576819][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6884.577140][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6884.577447][    C3]  </IRQ>
[ 6884.577602][    C3]  <TASK>
[ 6884.577759][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6884.578093][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6884.578398][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6884.578705][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6884.579030][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6884.579337][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6884.579597][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6884.579880][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6884.580175][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6884.580424][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6884.580675][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6884.580914][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6884.581157][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6884.581410][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6884.581717][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6884.581982][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6884.582327][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6884.582610][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6884.582910][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6884.583216][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6884.583514][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6884.583767][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6884.584028][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6884.584278][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6884.584605][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6884.584902][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6884.585227][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6884.585542][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6884.585798][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6884.586051][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6884.586307][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6884.586627][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6884.586876][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6884.587116][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6884.587457][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6884.587711][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6884.588068][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6884.588399][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6884.588695][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6884.589017][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6884.589265][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6884.589501][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6884.589793][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6884.590055][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6884.590305][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6884.590578][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6884.590841][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6884.591082][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6884.591372][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6884.591616][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6884.591864][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6884.592210][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6884.592480][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6884.592753][ C3] kthread (kernel/kthread.c:388) 
[ 6884.592969][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6884.593213][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6884.593450][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6884.593693][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6903.111250][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 3375909 jiffies s: 467069 root: 0x8/.
| [ 6903.111913][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6903.112295][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 6903.112580][    C3] NMI backtrace for cpu 3
[ 6903.112593][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6903.112596][    C3] Workqueue: netns cleanup_net
[ 6903.112604][ C3] RIP: 0010:kasan_check_range (./include/linux/kasan.h:61 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 6903.112614][ C3] Code: 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df <4d> 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d
All code
========
   0:	5b                   	pop    %rbx
   1:	5d                   	pop    %rbp
   2:	41 5c                	pop    %r12
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  10:	7f ff ff 
  13:	48 39 c7             	cmp    %rax,%rdi
  16:	76 dd                	jbe    0xfffffffffffffff5
  18:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  1d:	48 89 fd             	mov    %rdi,%rbp
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df 
  2a:*	4d 89 d1             	mov    %r10,%r9		<-- trapping instruction
  2d:	48 c1 ed 03          	shr    $0x3,%rbp
  31:	49 c1 e9 03          	shr    $0x3,%r9
  35:	48 01 c5             	add    %rax,%rbp
  38:	49 01 c1             	add    %rax,%r9
  3b:	48 89 e8             	mov    %rbp,%rax
  3e:	49                   	rex.WB
  3f:	8d                   	.byte 0x8d

Code starting with the faulting instruction
===========================================
   0:	4d 89 d1             	mov    %r10,%r9
   3:	48 c1 ed 03          	shr    $0x3,%rbp
   7:	49 c1 e9 03          	shr    $0x3,%r9
   b:	48 01 c5             	add    %rax,%rbp
   e:	49 01 c1             	add    %rax,%r9
  11:	48 89 e8             	mov    %rbp,%rax
  14:	49                   	rex.WB
  15:	8d                   	.byte 0x8d
[ 6903.112617][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000216
[ 6903.112619][    C3] RAX: dffffc0000000000 RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 6903.112621][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6903.112623][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6903.112624][    C3] R10: ffff888022f2b20b R11: 205d313754202020 R12: 0000000000000003
[ 6903.112626][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6903.112627][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6903.112630][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6903.112633][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6903.112635][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6903.112637][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6903.112638][    C3] PKRU: 55555554
[ 6903.112639][    C3] Call Trace:
[ 6903.112643][    C3]  <NMI>
[ 6903.112646][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 6903.112653][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 6903.112658][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 6903.112664][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 6903.112670][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 6903.112672][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 6903.112678][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6903.112683][ C3] ? kasan_check_range (./include/linux/kasan.h:61 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 6903.112687][ C3] ? kasan_check_range (./include/linux/kasan.h:61 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 6903.112691][ C3] ? kasan_check_range (./include/linux/kasan.h:61 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 6903.112695][    C3]  </NMI>
[ 6903.112696][    C3]  <TASK>
[ 6903.112697][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6903.112701][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6903.112705][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6903.112709][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6903.112716][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6903.112719][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6903.112722][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6903.112725][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6903.112731][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6903.112734][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6903.112738][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6903.112741][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6903.112747][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6903.112751][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6903.112755][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6903.112758][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6903.112763][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6903.112766][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6903.112773][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6903.112780][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6903.112784][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6903.112789][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6903.112796][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6903.112804][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6903.112810][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6903.112815][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6903.112819][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6903.112824][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6903.112828][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6903.112837][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6903.112842][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6903.112846][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6903.112853][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6903.112857][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6903.112860][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6903.112865][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6903.112868][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6903.112872][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6903.112875][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6903.112878][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6903.112881][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6903.112885][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6903.112887][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6903.112892][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6903.112896][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6903.112900][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6903.112904][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6903.112908][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6903.112911][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6903.112915][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6903.112918][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6903.112920][ C3] kthread (kernel/kthread.c:388) 
[ 6903.112923][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6903.112926][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6903.112929][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6903.112931][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6903.112940][    C3]  </TASK>
| [ 6908.393229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6908.393589][    C3] rcu: 3-....: (3376717 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=746732
| [ 6908.394169][    C3] rcu: (t=3381486 jiffies g=2723341 q=5646 ncpus=4)
[ 6908.395008][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6908.395639][    C3] Workqueue: netns cleanup_net
[ 6908.395897][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6908.396237][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 6908.397235][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6908.397554][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6908.397972][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6908.398389][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6908.398802][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6908.399213][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6908.399624][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6908.400087][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6908.400433][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6908.400847][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6908.401259][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6908.401670][    C3] PKRU: 55555554
[ 6908.401857][    C3] Call Trace:
[ 6908.402034][    C3]  <IRQ>
[ 6908.402186][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 6908.402471][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 6908.402731][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 6908.402988][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 6908.403288][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 6908.403526][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 6908.403806][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 6908.404086][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 6908.404352][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 6908.404645][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6908.404897][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 6908.405219][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6908.405500][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6908.405799][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6908.406074][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6908.406392][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6908.406663][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6908.406983][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6908.407292][    C3]  </IRQ>
[ 6908.407447][    C3]  <TASK>
[ 6908.407603][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6908.407938][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6908.408241][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6908.408549][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6908.408872][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6908.409177][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6908.409437][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6908.409719][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6908.410012][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6908.410262][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6908.410511][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6908.410750][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6908.410991][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6908.411243][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6908.411549][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6908.411813][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6908.412156][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6908.412440][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6908.412740][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6908.413046][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6908.413343][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6908.413602][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6908.413864][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6908.414113][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6908.414440][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6908.414740][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6908.415066][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6908.415380][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6908.415638][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6908.415892][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6908.416145][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6908.416465][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6908.416714][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6908.416952][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6908.417287][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6908.417542][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6908.417899][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6908.418227][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6908.418524][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6908.418847][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6908.419094][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6908.419332][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6908.419626][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6908.419887][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6908.420135][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6908.420408][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6908.420670][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6908.420912][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6908.421195][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6908.421440][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6908.421686][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6908.422033][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6908.422304][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6908.422573][ C3] kthread (kernel/kthread.c:388) 
[ 6908.422788][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6908.423031][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6908.423269][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6908.423514][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6932.564900][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6932.565394][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6932.565893][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6932.566383][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6932.567362][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6932.568000][    C3] Workqueue: netns cleanup_net
[ 6932.568256][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6932.568528][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 6932.569538][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 6932.569856][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6932.570278][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6932.570689][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6932.571101][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6932.571515][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6932.571929][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6932.572394][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6932.572736][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6932.573148][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6932.573563][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6932.573977][    C3] PKRU: 55555554
[ 6932.574165][    C3] Call Trace:
[ 6932.574341][    C3]  <IRQ>
[ 6932.574502][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6932.574774][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6932.575026][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6932.575316][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6932.575598][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6932.575897][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6932.576173][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6932.576491][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6932.576764][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6932.577084][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6932.577396][    C3]  </IRQ>
[ 6932.577551][    C3]  <TASK>
[ 6932.577714][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6932.578044][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6932.578350][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6932.578591][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6932.578890][ C3] ? kasan_report (mm/kasan/report.c:579) 
[ 6932.579127][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6932.579425][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6932.579749][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6932.580057][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6932.580319][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6932.580600][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6932.580894][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6932.581143][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6932.581397][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6932.581635][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6932.581875][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6932.582128][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6932.582440][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6932.582704][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6932.583049][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6932.583330][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6932.583632][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6932.583938][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6932.584236][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6932.584489][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6932.584752][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6932.585002][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6932.585332][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6932.585630][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6932.585957][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6932.586276][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6932.586535][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6932.586787][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6932.587038][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6932.587361][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6932.587619][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6932.587860][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6932.588195][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6932.588447][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6932.588802][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6932.589130][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6932.589427][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6932.589750][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6932.589998][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6932.590233][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6932.590530][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6932.590792][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6932.591036][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6932.591311][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6932.591574][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6932.591814][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6932.592097][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6932.592344][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6932.592593][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6932.592939][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6932.593209][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6932.593477][ C3] kthread (kernel/kthread.c:388) 
[ 6932.593692][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6932.593938][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6932.594172][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6932.594416][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6960.564911][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 6960.565408][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 6960.565904][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 6960.566394][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 6960.567375][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6960.568016][    C3] Workqueue: netns cleanup_net
[ 6960.568271][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6960.568608][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 6960.569614][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 6960.569929][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6960.570346][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6960.570758][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6960.571168][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6960.571580][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6960.571995][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6960.572458][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6960.572800][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6960.573212][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6960.573627][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6960.574041][    C3] PKRU: 55555554
[ 6960.574229][    C3] Call Trace:
[ 6960.574411][    C3]  <IRQ>
[ 6960.574566][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 6960.574839][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6960.575090][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 6960.575380][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6960.575661][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6960.575960][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6960.576241][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6960.576555][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6960.576827][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6960.577148][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6960.577460][    C3]  </IRQ>
[ 6960.577615][    C3]  <TASK>
[ 6960.577772][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6960.578098][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6960.578405][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 6960.578712][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6960.579036][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6960.579342][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6960.579603][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6960.579882][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6960.580179][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6960.580428][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6960.580677][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6960.580922][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6960.581163][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6960.581413][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6960.581722][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6960.581987][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6960.582334][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6960.582612][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6960.582917][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6960.583221][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6960.583520][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6960.583773][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6960.584035][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6960.584284][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6960.584613][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6960.584913][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6960.585239][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6960.585552][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6960.585810][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6960.586064][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6960.586319][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6960.586640][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6960.586887][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6960.587129][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6960.587471][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6960.587726][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6960.588077][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6960.588408][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6960.588703][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6960.589025][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6960.589276][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6960.589512][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6960.589806][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6960.590069][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6960.590319][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6960.590590][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6960.590857][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6960.591094][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6960.591380][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6960.591624][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6960.591873][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6960.592217][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6960.592487][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6960.592755][ C3] kthread (kernel/kthread.c:388) 
[ 6960.592973][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6960.593215][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6960.593454][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6960.593696][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 6960.593953][    C3]  </TASK>
| [ 6986.427229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6986.427614][    C3] rcu: 3-....: (3454661 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=764409
| [ 6986.428192][    C3] rcu: (t=3459520 jiffies g=2723341 q=5646 ncpus=4)
[ 6986.429034][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6986.429666][    C3] Workqueue: netns cleanup_net
[ 6986.429923][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6986.430196][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 6986.431200][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 6986.431518][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 6986.431929][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 6986.432344][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 6986.432754][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 6986.433164][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 6986.433577][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 6986.434040][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6986.434385][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 6986.434798][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6986.435208][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6986.435622][    C3] PKRU: 55555554
[ 6986.435808][    C3] Call Trace:
[ 6986.435986][    C3]  <IRQ>
[ 6986.436138][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 6986.436424][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 6986.436685][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 6986.436942][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 6986.437241][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 6986.437485][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 6986.437765][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 6986.438045][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 6986.438311][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 6986.438604][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 6986.438855][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 6986.439178][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 6986.439460][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 6986.439759][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 6986.440033][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 6986.440350][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 6986.440621][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 6986.440941][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 6986.441248][    C3]  </IRQ>
[ 6986.441403][    C3]  <TASK>
[ 6986.441559][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 6986.441888][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6986.442192][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 6986.442437][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 6986.442731][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 6986.443053][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 6986.443362][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6986.443621][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6986.443902][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 6986.444197][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6986.444443][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6986.444695][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 6986.444935][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 6986.445173][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 6986.445425][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6986.445733][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 6986.445996][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6986.446340][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 6986.446617][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 6986.446918][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6986.447222][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 6986.447527][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 6986.447777][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 6986.448038][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 6986.448288][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 6986.448615][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 6986.448912][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 6986.449239][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 6986.449555][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 6986.449813][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 6986.450066][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 6986.450317][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 6986.450635][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 6986.450885][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 6986.451124][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 6986.451459][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 6986.451709][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 6986.452062][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 6986.452389][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 6986.452683][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 6986.453005][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 6986.453255][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 6986.453488][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 6986.453782][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 6986.454043][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 6986.454288][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 6986.454559][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 6986.454820][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 6986.455059][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 6986.455341][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 6986.455585][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 6986.455833][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 6986.456176][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6986.456446][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 6986.456712][ C3] kthread (kernel/kthread.c:388) 
[ 6986.456926][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6986.457170][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 6986.457412][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 6986.457653][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7001.415251][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 3474213 jiffies s: 467069 root: 0x8/.
| [ 7001.415922][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7001.416303][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 7001.416588][    C3] NMI backtrace for cpu 3
[ 7001.416601][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7001.416604][    C3] Workqueue: netns cleanup_net
[ 7001.416612][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7001.416619][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 7001.416623][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 7001.416625][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 7001.416627][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7001.416629][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 7001.416631][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7001.416633][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7001.416634][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7001.416636][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7001.416640][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7001.416642][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7001.416643][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7001.416645][    C3] PKRU: 55555554
[ 7001.416646][    C3] Call Trace:
[ 7001.416649][    C3]  <NMI>
[ 7001.416653][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 7001.416659][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 7001.416664][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 7001.416670][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 7001.416675][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 7001.416678][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 7001.416683][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7001.416690][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7001.416693][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7001.416696][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7001.416699][    C3]  </NMI>
[ 7001.416700][    C3]  <TASK>
[ 7001.416704][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7001.416710][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7001.416714][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7001.416718][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7001.416723][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7001.416730][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7001.416733][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7001.416736][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7001.416739][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7001.416745][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7001.416748][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7001.416753][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7001.416755][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7001.416762][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7001.416765][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7001.416769][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7001.416772][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7001.416777][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7001.416780][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7001.416786][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7001.416794][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7001.416798][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7001.416801][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7001.416809][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7001.416816][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7001.416822][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7001.416827][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7001.416831][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7001.416836][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7001.416841][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7001.416849][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7001.416854][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7001.416858][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7001.416864][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7001.416868][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7001.416871][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7001.416876][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7001.416879][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7001.416883][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7001.416886][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7001.416889][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7001.416893][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7001.416896][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7001.416898][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7001.416904][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7001.416908][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7001.416912][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7001.416917][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7001.416920][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7001.416923][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7001.416927][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7001.416931][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7001.416933][ C3] kthread (kernel/kthread.c:388) 
[ 7001.416936][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7001.416939][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7001.416942][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7001.416944][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7028.564901][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7028.565396][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7028.565890][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7028.566379][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7028.567362][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7028.567998][    C3] Workqueue: netns cleanup_net
[ 7028.568254][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7028.568527][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 7028.569531][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 7028.569847][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7028.570262][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7028.570674][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7028.571089][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7028.571504][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7028.571917][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7028.572380][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7028.572722][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7028.573135][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7028.573549][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7028.573962][    C3] PKRU: 55555554
[ 7028.574149][    C3] Call Trace:
[ 7028.574328][    C3]  <IRQ>
[ 7028.574483][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7028.574757][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7028.575008][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7028.575297][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7028.575578][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7028.575876][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7028.576152][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7028.576470][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7028.576742][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7028.577061][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7028.577375][    C3]  </IRQ>
[ 7028.577529][    C3]  <TASK>
[ 7028.577686][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7028.578011][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7028.578317][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7028.578558][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7028.578863][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7028.579159][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7028.579488][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7028.579791][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7028.580052][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7028.580334][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7028.580628][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7028.580875][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7028.581124][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7028.581363][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7028.581604][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7028.581853][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7028.582160][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7028.582427][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7028.582771][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7028.583050][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7028.583351][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7028.583655][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7028.583950][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7028.584202][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7028.584462][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7028.584708][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7028.585033][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7028.585336][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7028.585660][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7028.585974][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7028.586231][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7028.586484][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7028.586737][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7028.587056][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7028.587312][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7028.587552][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7028.587888][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7028.588141][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7028.588498][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7028.588826][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7028.589120][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7028.589443][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7028.589690][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7028.589927][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7028.590220][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7028.590482][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7028.590728][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7028.591000][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7028.591264][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7028.591503][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7028.591787][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7028.592030][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7028.592277][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7028.592620][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7028.592890][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7028.593158][ C3] kthread (kernel/kthread.c:388) 
[ 7028.593376][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7028.593617][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7028.593851][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7028.594094][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7056.564912][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7056.565410][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7056.565909][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7056.566399][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7056.567387][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7056.568023][    C3] Workqueue: netns cleanup_net
[ 7056.568278][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 7056.568549][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 7056.569554][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 7056.569870][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 7056.570283][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7056.570694][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7056.571106][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 7056.571519][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 7056.571931][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7056.572390][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7056.572733][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7056.573146][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7056.573565][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7056.573977][    C3] PKRU: 55555554
[ 7056.574164][    C3] Call Trace:
[ 7056.574341][    C3]  <IRQ>
[ 7056.574498][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7056.574770][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7056.575023][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7056.575310][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7056.575591][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7056.575893][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7056.576169][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7056.576484][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7056.576754][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7056.577078][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7056.577385][    C3]  </IRQ>
[ 7056.577539][    C3]  <TASK>
[ 7056.577697][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7056.578022][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7056.578328][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7056.578635][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 7056.578875][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7056.579170][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7056.579494][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7056.579799][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7056.580057][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7056.580340][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7056.580634][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7056.580888][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7056.581135][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7056.581375][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7056.581615][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7056.581864][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7056.582168][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7056.582432][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7056.582774][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7056.583052][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7056.583352][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7056.583657][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7056.583951][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7056.584203][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7056.584463][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7056.584711][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7056.585037][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7056.585336][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7056.585661][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7056.585974][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7056.586228][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7056.586482][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7056.586735][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7056.587058][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7056.587306][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7056.587542][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7056.587874][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7056.588127][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7056.588477][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7056.588807][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7056.589104][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7056.589428][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7056.589673][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7056.589909][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7056.590202][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7056.590462][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7056.590708][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7056.590979][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7056.591242][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7056.591482][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7056.591764][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7056.592007][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7056.592258][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7056.592602][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7056.592871][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7056.593139][ C3] kthread (kernel/kthread.c:388) 
[ 7056.593356][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7056.593598][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7056.593834][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7056.594075][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7056.594333][    C3]  </TASK>
| [ 7064.461230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7064.461599][    C3] rcu: 3-....: (3532579 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=780720
| [ 7064.462178][    C3] rcu: (t=3537554 jiffies g=2723341 q=5646 ncpus=4)
[ 7064.463015][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7064.463647][    C3] Workqueue: netns cleanup_net
[ 7064.463900][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:579) 
[ 7064.464165][ C3] Code: 83 c4 68 5b 5d 41 5c c3 cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	83 c4 68             	add    $0x68,%esp
   3:	5b                   	pop    %rbx
   4:	5d                   	pop    %rbp
   5:	41 5c                	pop    %r12
   7:	c3                   	ret
   8:	cc                   	int3
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  13:	00 
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	66 0f 1f 00          	nopw   (%rax)
  28:	41 57                	push   %r15
  2a:*	41 56                	push   %r14		<-- trapping instruction
  2c:	41 55                	push   %r13
  2e:	41 54                	push   %r12
  30:	55                   	push   %rbp
  31:	53                   	push   %rbx
  32:	48 83 ec 70          	sub    $0x70,%rsp
  36:	9c                   	pushf
  37:	8f 04 24             	pop    (%rsp)
  3a:	0f 01 ca             	clac
  3d:	65                   	gs
  3e:	4c                   	rex.WR
  3f:	8b                   	.byte 0x8b

Code starting with the faulting instruction
===========================================
   0:	41 56                	push   %r14
   2:	41 55                	push   %r13
   4:	41 54                	push   %r12
   6:	55                   	push   %rbp
   7:	53                   	push   %rbx
   8:	48 83 ec 70          	sub    $0x70,%rsp
   c:	9c                   	pushf
   d:	8f 04 24             	pop    (%rsp)
  10:	0f 01 ca             	clac
  13:	65                   	gs
  14:	4c                   	rex.WR
  15:	8b                   	.byte 0x8b
[ 7064.465162][    C3] RSP: 0018:ffffc9000051f4a0 EFLAGS: 00000213
[ 7064.465485][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 7064.465897][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7064.466310][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 7064.466724][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7064.467146][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7064.467558][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7064.468020][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7064.468365][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7064.468777][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7064.469188][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7064.469602][    C3] PKRU: 55555554
[ 7064.469787][    C3] Call Trace:
[ 7064.469966][    C3]  <IRQ>
[ 7064.470118][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 7064.470407][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 7064.470667][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 7064.470926][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 7064.471224][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 7064.471463][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 7064.471743][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 7064.472020][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 7064.472287][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 7064.472580][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7064.472831][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 7064.473153][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7064.473435][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7064.473733][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7064.474008][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7064.474325][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7064.474596][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7064.474915][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7064.475221][    C3]  </IRQ>
[ 7064.475377][    C3]  <TASK>
[ 7064.475533][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7064.475861][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7064.476159][ C3] ? kasan_report (mm/kasan/report.c:579) 
[ 7064.476396][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7064.476655][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7064.476949][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7064.477272][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7064.477582][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7064.477839][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7064.478120][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7064.478415][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7064.478666][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7064.478916][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7064.479152][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7064.479394][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7064.479645][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7064.479949][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7064.480212][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7064.480562][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7064.480840][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7064.481139][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7064.481446][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7064.481741][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7064.481991][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7064.482253][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7064.482502][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7064.482828][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7064.483125][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7064.483451][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7064.483765][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7064.484021][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7064.484273][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7064.484526][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7064.484845][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7064.485096][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7064.485333][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7064.485667][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7064.485920][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7064.486274][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7064.486602][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7064.486898][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7064.487225][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7064.487471][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7064.487711][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7064.488002][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7064.488263][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7064.488510][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7064.488780][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7064.489041][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7064.489282][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7064.489562][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7064.489805][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7064.490049][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7064.490396][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7064.490665][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7064.490931][ C3] kthread (kernel/kthread.c:388) 
[ 7064.491144][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7064.491388][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7064.491620][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7064.491862][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7088.564907][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7088.565401][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7088.565895][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7088.566389][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7088.567371][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7088.568002][    C3] Workqueue: netns cleanup_net
[ 7088.568260][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7088.568599][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 7088.569603][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 7088.569924][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7088.570338][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7088.570749][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7088.571164][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7088.571580][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7088.571991][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7088.572454][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7088.572796][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7088.573212][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7088.573625][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7088.574036][    C3] PKRU: 55555554
[ 7088.574224][    C3] Call Trace:
[ 7088.574404][    C3]  <IRQ>
[ 7088.574557][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7088.574830][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7088.575083][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7088.575370][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7088.575657][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7088.575956][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7088.576233][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7088.576551][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7088.576828][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7088.577148][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7088.577453][    C3]  </IRQ>
[ 7088.577612][    C3]  <TASK>
[ 7088.577765][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7088.578094][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7088.578402][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7088.578707][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7088.579030][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7088.579340][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7088.579599][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7088.579880][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7088.580174][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7088.580422][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7088.580674][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7088.580913][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7088.581153][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7088.581408][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7088.581715][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7088.581979][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7088.582326][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7088.582604][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7088.582902][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7088.583209][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7088.583511][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7088.583762][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7088.584022][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7088.584272][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7088.584600][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7088.584897][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7088.585222][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7088.585540][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7088.585797][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7088.586049][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7088.586301][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7088.586620][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7088.586879][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7088.587117][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7088.587457][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7088.587709][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7088.588062][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7088.588391][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7088.588687][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7088.589011][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7088.589260][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7088.589494][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7088.589790][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7088.590050][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7088.590297][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7088.590569][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7088.590834][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7088.591074][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7088.591359][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7088.591606][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7088.591854][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7088.592199][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7088.592471][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7088.592738][ C3] kthread (kernel/kthread.c:388) 
[ 7088.592953][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7088.593198][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7088.593432][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7088.593676][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7099.719253][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 3572517 jiffies s: 467069 root: 0x8/.
| [ 7099.719927][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7099.720307][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 7099.720588][    C3] NMI backtrace for cpu 3
[ 7099.720600][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7099.720603][    C3] Workqueue: netns cleanup_net
[ 7099.720612][ C3] RIP: 0010:__asan_report_load4_noabort (mm/kasan/report_generic.c:380) 
[ 7099.720618][ C3] Code: 4c e0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 31 d2 <be> 04 00 00 00 e9 1c e0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90
All code
========
   0:	4c e0 ff             	rex.WR loopne 0x2
   3:	ff 66 66             	jmp    *0x66(%rsi)
   6:	2e 0f 1f 84 00 00 00 	cs nopl 0x0(%rax,%rax,1)
   d:	00 00 
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	f3 0f 1e fa          	endbr64
  24:	48 8b 0c 24          	mov    (%rsp),%rcx
  28:	31 d2                	xor    %edx,%edx
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	e9 1c e0 ff ff       	jmp    0xffffffffffffe050
  34:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3b:	00 00 00 00 
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	e9 1c e0 ff ff       	jmp    0xffffffffffffe026
   a:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  11:	00 00 00 00 
  15:	90                   	nop
[ 7099.720622][    C3] RSP: 0018:ffffc9000051f4c8 EFLAGS: 00000246
[ 7099.720624][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7099.720625][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7099.720627][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7099.720629][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7099.720631][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7099.720632][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7099.720634][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7099.720638][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7099.720640][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7099.720641][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7099.720642][    C3] PKRU: 55555554
[ 7099.720643][    C3] Call Trace:
[ 7099.720647][    C3]  <NMI>
[ 7099.720649][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 7099.720655][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 7099.720660][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 7099.720666][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 7099.720672][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 7099.720674][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 7099.720679][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7099.720685][ C3] ? __asan_report_load4_noabort (mm/kasan/report_generic.c:380) 
[ 7099.720687][ C3] ? __asan_report_load4_noabort (mm/kasan/report_generic.c:380) 
[ 7099.720690][ C3] ? __asan_report_load4_noabort (mm/kasan/report_generic.c:380) 
[ 7099.720693][    C3]  </NMI>
[ 7099.720694][    C3]  <TASK>
[ 7099.720695][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7099.720699][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7099.720703][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7099.720708][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7099.720713][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7099.720716][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7099.720719][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7099.720722][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7099.720728][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7099.720731][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7099.720735][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7099.720738][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7099.720744][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7099.720747][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7099.720750][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7099.720754][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7099.720759][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7099.720762][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7099.720768][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7099.720775][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7099.720780][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7099.720783][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7099.720791][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7099.720799][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7099.720805][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7099.720810][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7099.720814][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7099.720818][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7099.720823][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7099.720831][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7099.720835][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7099.720839][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7099.720845][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7099.720850][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7099.720853][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7099.720858][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7099.720861][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7099.720865][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7099.720868][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7099.720872][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7099.720874][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7099.720878][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7099.720880][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7099.720886][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7099.720890][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7099.720894][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7099.720898][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7099.720902][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7099.720905][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7099.720909][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7099.720912][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7099.720914][ C3] kthread (kernel/kthread.c:388) 
[ 7099.720917][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7099.720919][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7099.720922][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7099.720925][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7124.564899][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7124.565395][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7124.565892][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7124.566383][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7124.567366][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7124.567998][    C3] Workqueue: netns cleanup_net
[ 7124.568254][ C3] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 7124.568549][ C3] Code: 48 c7 c7 b0 c2 9e a9 5b 5d 41 5c e9 9a b3 9b ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 af ef ff ff 66 66 2e 0f 1f
All code
========
   0:	48 c7 c7 b0 c2 9e a9 	mov    $0xffffffffa99ec2b0,%rdi
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	e9 9a b3 9b ff       	jmp    0xffffffffff9bb3aa
  10:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  17:	00 00 00 
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 af ef ff ff       	jmp    0xffffffffffffefea
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 af ef ff ff       	jmp    0xffffffffffffefc0
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 7124.569553][    C3] RSP: 0018:ffffc9000051f4c8 EFLAGS: 00000206
[ 7124.569870][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7124.570286][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7124.570707][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7124.571125][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7124.571541][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7124.571954][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7124.572418][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7124.572761][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7124.573174][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7124.573590][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7124.574001][    C3] PKRU: 55555554
[ 7124.574189][    C3] Call Trace:
[ 7124.574367][    C3]  <IRQ>
[ 7124.574523][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7124.574796][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7124.575050][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7124.575338][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7124.575620][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7124.575919][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7124.576195][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7124.576513][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7124.576792][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7124.577113][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7124.577420][    C3]  </IRQ>
[ 7124.577575][    C3]  <TASK>
[ 7124.577731][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7124.578060][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7124.578365][ C3] ? __pfx___kasan_check_read (mm/kasan/shadow.c:30) 
[ 7124.578658][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7124.578950][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7124.579274][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7124.579581][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7124.579840][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7124.580124][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7124.580418][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7124.580670][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7124.580920][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7124.581158][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7124.581402][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7124.581654][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7124.581961][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7124.582227][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7124.582573][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7124.582851][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7124.583154][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7124.583463][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7124.583760][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7124.584011][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7124.584273][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7124.584526][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7124.584854][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7124.585151][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7124.585478][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7124.585794][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7124.586050][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7124.586301][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7124.586557][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7124.586884][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7124.587134][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7124.587374][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7124.587708][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7124.587962][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7124.588316][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7124.588643][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7124.588940][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7124.589264][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7124.589510][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7124.589747][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7124.590041][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7124.590301][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7124.590549][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7124.590820][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7124.591083][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7124.591330][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7124.591612][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7124.591856][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7124.592102][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7124.592449][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7124.592717][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7124.592985][ C3] kthread (kernel/kthread.c:388) 
[ 7124.593200][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7124.593444][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7124.593678][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7124.593920][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7124.594180][    C3]  </TASK>
| [ 7142.495229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7142.495606][    C3] rcu: 3-....: (3610497 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=798571
| [ 7142.496188][    C3] rcu: (t=3615588 jiffies g=2723341 q=5646 ncpus=4)
[ 7142.497030][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7142.497665][    C3] Workqueue: netns cleanup_net
[ 7142.497927][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 7142.498200][ C3] Code: 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	41 57                	push   %r15
  1a:	41 56                	push   %r14
  1c:	41 55                	push   %r13
  1e:	41 54                	push   %r12
  20:	55                   	push   %rbp
  21:	53                   	push   %rbx
  22:	48 83 ec 70          	sub    $0x70,%rsp
  26:	9c                   	pushf
  27:	8f 04 24             	pop    (%rsp)
  2a:*	0f 01 ca             	clac		<-- trapping instruction
  2d:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  34:	1f 00 
  36:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3d:	85 c0                	test   %eax,%eax
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	0f 01 ca             	clac
   3:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   a:	1f 00 
   c:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  13:	85 c0                	test   %eax,%eax
  15:	0f                   	.byte 0xf
[ 7142.499203][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 7142.499522][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 7142.499935][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7142.500347][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 7142.500758][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7142.501177][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7142.501591][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7142.502052][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7142.502397][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7142.502809][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7142.503224][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7142.503636][    C3] PKRU: 55555554
[ 7142.503824][    C3] Call Trace:
[ 7142.504000][    C3]  <IRQ>
[ 7142.504154][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 7142.504438][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 7142.504700][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 7142.504959][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 7142.505255][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 7142.505496][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 7142.505775][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 7142.506054][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 7142.506320][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 7142.506621][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7142.506871][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 7142.507193][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7142.507476][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7142.507772][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7142.508045][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7142.508364][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7142.508635][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7142.508956][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7142.509264][    C3]  </IRQ>
[ 7142.509419][    C3]  <TASK>
[ 7142.509573][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7142.509901][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7142.510204][ C3] ? kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 7142.510444][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7142.510703][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7142.510994][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7142.511317][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7142.511622][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7142.511880][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7142.512161][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7142.512457][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7142.512703][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7142.512954][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7142.513194][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7142.513432][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7142.513684][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7142.513992][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7142.514256][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7142.514600][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7142.514876][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7142.515178][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7142.515483][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7142.515781][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7142.516031][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7142.516292][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7142.516544][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7142.516870][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7142.517169][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7142.517492][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7142.517809][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7142.518067][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7142.518321][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7142.518574][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7142.518890][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7142.519140][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7142.519381][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7142.519715][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7142.519966][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7142.520319][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7142.520648][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7142.520941][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7142.521265][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7142.521513][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7142.521746][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7142.522041][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7142.522303][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7142.522550][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7142.522821][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7142.523082][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7142.523326][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7142.523608][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7142.523851][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7142.524100][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7142.524444][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7142.524712][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7142.524979][ C3] kthread (kernel/kthread.c:388) 
[ 7142.525193][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7142.525438][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7142.525673][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7142.525913][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7168.564891][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7168.565384][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7168.565874][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7168.566364][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7168.567339][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7168.567967][    C3] Workqueue: netns cleanup_net
[ 7168.568220][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 7168.568516][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 7168.569513][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000286
[ 7168.569829][    C3] RAX: ffff888022f2b20c RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 7168.570242][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7168.570652][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7168.571062][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7168.571471][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7168.571881][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7168.572342][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7168.572685][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7168.573097][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7168.573506][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7168.573918][    C3] PKRU: 55555554
[ 7168.574104][    C3] Call Trace:
[ 7168.574280][    C3]  <IRQ>
[ 7168.574433][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7168.574705][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7168.574957][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7168.575244][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7168.575524][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7168.575819][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7168.576094][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7168.576415][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7168.576684][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7168.577005][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7168.577310][    C3]  </IRQ>
[ 7168.577463][    C3]  <TASK>
[ 7168.577618][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7168.577943][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7168.578243][ C3] ? kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 7168.578508][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7168.578797][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7168.579120][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7168.579426][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7168.579686][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7168.579966][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7168.580258][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7168.580504][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7168.580755][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7168.580992][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7168.581231][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7168.581482][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7168.581790][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7168.582053][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7168.582406][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7168.582681][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7168.582979][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7168.583284][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7168.583582][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7168.583833][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7168.584091][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7168.584339][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7168.584665][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7168.584961][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7168.585283][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7168.585598][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7168.585854][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7168.586105][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7168.586355][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7168.586679][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7168.586929][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7168.587167][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7168.587498][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7168.587751][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7168.588103][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7168.588429][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7168.588721][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7168.589044][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7168.589290][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7168.589523][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7168.589817][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7168.590080][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7168.590326][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7168.590598][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7168.590859][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7168.591099][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7168.591383][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7168.591630][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7168.591876][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7168.592219][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7168.592486][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7168.592753][ C3] kthread (kernel/kthread.c:388) 
[ 7168.592967][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7168.593210][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7168.593443][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7168.593686][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7196.564882][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7196.565370][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7196.565862][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7196.566353][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7196.567323][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7196.567952][    C3] Workqueue: netns cleanup_net
[ 7196.568204][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7196.568482][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 7196.569481][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 7196.569795][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 7196.570207][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7196.570617][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7196.571026][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7196.571437][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 7196.571849][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7196.572309][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7196.572651][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7196.573063][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7196.573474][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7196.573885][    C3] PKRU: 55555554
[ 7196.574072][    C3] Call Trace:
[ 7196.574246][    C3]  <IRQ>
[ 7196.574401][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7196.574671][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7196.574922][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7196.575208][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7196.575488][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7196.575786][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7196.576060][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7196.576377][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7196.576648][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7196.576964][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7196.577270][    C3]  </IRQ>
[ 7196.577424][    C3]  <TASK>
[ 7196.577581][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7196.577904][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7196.578201][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7196.578500][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7196.578744][ C3] kasan_report (mm/kasan/report.c:585) 
[ 7196.578975][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7196.579272][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7196.579529][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7196.579819][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7196.580140][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7196.580446][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7196.580704][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7196.580984][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7196.581279][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7196.581522][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7196.581772][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7196.582011][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7196.582252][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7196.582502][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7196.582809][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7196.583074][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7196.583413][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7196.583689][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7196.583988][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7196.584289][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7196.584585][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7196.584833][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7196.585092][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7196.585341][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7196.585668][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7196.585966][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7196.586294][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7196.586610][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7196.586866][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7196.587119][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7196.587371][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7196.587687][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7196.587935][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7196.588174][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7196.588507][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7196.588758][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7196.589111][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7196.589438][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7196.589729][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7196.590051][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7196.590300][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7196.590533][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7196.590827][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7196.591088][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7196.591334][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7196.591604][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7196.591864][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7196.592104][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7196.592385][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7196.592629][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7196.592877][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7196.593222][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7196.593489][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7196.593757][ C3] kthread (kernel/kthread.c:388) 
[ 7196.593971][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7196.594214][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7196.594449][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7196.594689][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7198.023242][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 3670821 jiffies s: 467069 root: 0x8/.
| [ 7198.023892][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7198.024269][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 7198.024550][    C3] NMI backtrace for cpu 3
[ 7198.024559][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7198.024562][    C3] Workqueue: netns cleanup_net
[ 7198.024567][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7198.024572][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 7198.024575][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 7198.024577][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7198.024579][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7198.024581][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7198.024582][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7198.024584][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7198.024586][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7198.024588][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7198.024591][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7198.024593][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7198.024594][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7198.024596][    C3] PKRU: 55555554
[ 7198.024597][    C3] Call Trace:
[ 7198.024599][    C3]  <NMI>
[ 7198.024601][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 7198.024607][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 7198.024612][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 7198.024618][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 7198.024622][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 7198.024624][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 7198.024629][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7198.024633][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7198.024636][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7198.024640][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7198.024643][    C3]  </NMI>
[ 7198.024644][    C3]  <TASK>
[ 7198.024645][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7198.024649][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7198.024654][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7198.024659][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7198.024662][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7198.024665][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7198.024667][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7198.024672][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7198.024674][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7198.024679][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7198.024681][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7198.024686][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7198.024689][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7198.024693][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7198.024696][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7198.024701][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7198.024704][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7198.024709][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7198.024714][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7198.024718][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7198.024721][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7198.024727][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7198.024734][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7198.024740][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7198.024744][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7198.024749][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7198.024752][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7198.024757][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7198.024764][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7198.024768][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7198.024772][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7198.024777][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7198.024780][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7198.024783][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7198.024787][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7198.024790][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7198.024794][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7198.024797][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7198.024800][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7198.024803][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7198.024806][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7198.024808][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7198.024813][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7198.024817][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7198.024820][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7198.024824][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7198.024828][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7198.024831][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7198.024835][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7198.024838][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7198.024840][ C3] kthread (kernel/kthread.c:388) 
[ 7198.024842][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7198.024845][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7198.024847][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7198.024849][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7198.024856][    C3]  </TASK>
| [ 7220.530229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7220.530604][    C3] rcu: 3-....: (3688417 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=815090
| [ 7220.531179][    C3] rcu: (t=3693623 jiffies g=2723341 q=5646 ncpus=4)
[ 7220.532012][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7220.532641][    C3] Workqueue: netns cleanup_net
[ 7220.532894][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7220.533174][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 7220.534171][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 7220.534487][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 7220.534898][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7220.535308][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7220.535716][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7220.536128][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 7220.536545][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7220.537004][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7220.537345][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7220.537756][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7220.538170][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7220.538578][    C3] PKRU: 55555554
[ 7220.538766][    C3] Call Trace:
[ 7220.538939][    C3]  <IRQ>
[ 7220.539094][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 7220.539376][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 7220.539637][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 7220.539895][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 7220.540190][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 7220.540429][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 7220.540706][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 7220.540985][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 7220.541250][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 7220.541544][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7220.541793][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 7220.542113][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7220.542396][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7220.542691][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7220.542963][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7220.543278][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7220.543548][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7220.543867][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7220.544172][    C3]  </IRQ>
[ 7220.544328][    C3]  <TASK>
[ 7220.544482][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7220.544804][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7220.545111][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7220.545412][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7220.545659][ C3] kasan_report (mm/kasan/report.c:585) 
[ 7220.545889][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7220.546187][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7220.546509][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7220.546814][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7220.547069][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7220.547351][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7220.547643][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7220.547889][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7220.548136][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7220.548373][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7220.548613][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7220.548862][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7220.549165][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7220.549430][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7220.549773][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7220.550050][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7220.550347][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7220.550652][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7220.550946][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7220.551196][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7220.551456][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7220.551705][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7220.552030][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7220.552327][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7220.552649][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7220.552962][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7220.553217][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7220.553468][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7220.553720][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7220.554038][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7220.554285][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7220.554522][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7220.554854][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7220.555105][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7220.555453][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7220.555779][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7220.556074][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7220.556399][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7220.556644][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7220.556878][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7220.557173][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7220.557432][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7220.557678][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7220.557946][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7220.558206][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7220.558445][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7220.558727][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7220.558969][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7220.559213][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7220.559557][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7220.559825][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7220.560099][ C3] kthread (kernel/kthread.c:388) 
[ 7220.560314][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7220.560556][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7220.560788][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7220.561029][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7244.564888][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7244.565380][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7244.565868][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7244.566360][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7244.567332][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7244.567962][    C3] Workqueue: netns cleanup_net
[ 7244.568214][ C3] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7244.568543][ C3] Code: 0f 1f 44 00 00 49 89 fd 49 89 fc 41 be 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 <be> 04 00 00 00 48 89 ef e8 d0 79 e9 fd 41 0f b6 45 00 41 38 c4 7c
All code
========
   0:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   5:	49 89 fd             	mov    %rdi,%r13
   8:	49 89 fc             	mov    %rdi,%r12
   b:	41 be 01 00 00 00    	mov    $0x1,%r14d
  11:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  18:	fc ff df 
  1b:	49 c1 ed 03          	shr    $0x3,%r13
  1f:	41 83 e4 07          	and    $0x7,%r12d
  23:	49 01 c5             	add    %rax,%r13
  26:	41 83 c4 03          	add    $0x3,%r12d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 d0 79 e9 fd       	call   0xfffffffffde97a07
  37:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  3c:	41 38 c4             	cmp    %al,%r12b
  3f:	7c                   	.byte 0x7c

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 d0 79 e9 fd       	call   0xfffffffffde979dd
   d:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  12:	41 38 c4             	cmp    %al,%r12b
  15:	7c                   	.byte 0x7c
[ 7244.569538][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 7244.569855][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7244.570268][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7244.570676][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7244.571086][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7244.571500][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7244.571909][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7244.572369][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7244.572711][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7244.573125][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7244.573536][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7244.573944][    C3] PKRU: 55555554
[ 7244.574131][    C3] Call Trace:
[ 7244.574306][    C3]  <IRQ>
[ 7244.574459][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7244.574730][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7244.574982][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7244.575265][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7244.575545][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7244.575842][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7244.576120][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7244.576435][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7244.576705][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7244.577023][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7244.577325][    C3]  </IRQ>
[ 7244.577481][    C3]  <TASK>
[ 7244.577635][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7244.577959][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7244.578263][ C3] ? queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7244.578562][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7244.578884][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7244.579188][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7244.579447][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7244.579727][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7244.580019][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7244.580267][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7244.580514][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7244.580751][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7244.580990][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7244.581240][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7244.581544][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7244.581806][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7244.582148][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7244.582428][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7244.582725][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7244.583029][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7244.583325][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7244.583572][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7244.583832][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7244.584078][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7244.584402][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7244.584700][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7244.585023][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7244.585336][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7244.585591][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7244.585843][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7244.586101][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7244.586419][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7244.586664][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7244.586902][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7244.587232][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7244.587484][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7244.587832][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7244.588158][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7244.588451][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7244.588771][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7244.589016][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7244.589250][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7244.589541][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7244.589800][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7244.590044][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7244.590313][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7244.590574][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7244.590812][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7244.591094][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7244.591335][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7244.591580][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7244.591922][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7244.592189][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7244.592456][ C3] kthread (kernel/kthread.c:388) 
[ 7244.592670][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7244.592910][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7244.593142][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7244.593383][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7272.564883][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7272.565369][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7272.565860][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7272.566348][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7272.567317][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7272.567942][    C3] Workqueue: netns cleanup_net
[ 7272.568193][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7272.568528][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 7272.569524][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 7272.569839][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7272.570252][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7272.570662][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7272.571072][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7272.571481][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7272.571892][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7272.572352][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7272.572696][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7272.573108][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7272.573517][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7272.573929][    C3] PKRU: 55555554
[ 7272.574115][    C3] Call Trace:
[ 7272.574290][    C3]  <IRQ>
[ 7272.574444][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7272.574715][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7272.574964][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7272.575251][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7272.575532][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7272.575828][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7272.576106][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7272.576421][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7272.576691][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7272.577009][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7272.577316][    C3]  </IRQ>
[ 7272.577469][    C3]  <TASK>
[ 7272.577625][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7272.577948][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7272.578253][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7272.578558][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7272.578879][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7272.579183][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7272.579441][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7272.579720][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7272.580014][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7272.580260][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7272.580508][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7272.580747][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7272.580987][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7272.581237][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7272.581542][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7272.581806][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7272.582148][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7272.582424][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7272.582725][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7272.583030][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7272.583326][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7272.583578][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7272.583837][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7272.584082][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7272.584409][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7272.584708][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7272.585031][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7272.585346][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7272.585603][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7272.585854][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7272.586112][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7272.586428][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7272.586674][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7272.586914][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7272.587247][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7272.587497][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7272.587848][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7272.588173][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7272.588465][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7272.588788][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7272.589035][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7272.589270][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7272.589562][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7272.589822][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7272.590068][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7272.590338][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7272.590598][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7272.590835][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7272.591118][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7272.591359][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7272.591608][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7272.591951][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7272.592218][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7272.592485][ C3] kthread (kernel/kthread.c:388) 
[ 7272.592701][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7272.592941][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7272.593177][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7272.593419][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7296.327245][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 3769125 jiffies s: 467069 root: 0x8/.
| [ 7296.327921][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7296.328298][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 7296.328582][    C3] NMI backtrace for cpu 3
[ 7296.328593][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7296.328596][    C3] Workqueue: netns cleanup_net
[ 7296.328603][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7296.328609][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 7296.328611][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 7296.328614][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7296.328616][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7296.328618][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7296.328619][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7296.328621][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7296.328623][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7296.328625][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7296.328629][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7296.328631][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7296.328632][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7296.328634][    C3] PKRU: 55555554
[ 7296.328635][    C3] Call Trace:
[ 7296.328637][    C3]  <NMI>
[ 7296.328641][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 7296.328646][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 7296.328651][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 7296.328655][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 7296.328659][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 7296.328662][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 7296.328666][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7296.328670][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7296.328673][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7296.328677][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7296.328680][    C3]  </NMI>
[ 7296.328681][    C3]  <TASK>
[ 7296.328682][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7296.328686][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7296.328691][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7296.328696][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7296.328699][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7296.328703][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7296.328705][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7296.328710][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7296.328713][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7296.328717][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7296.328720][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7296.328725][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7296.328727][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7296.328731][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7296.328734][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7296.328739][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7296.328742][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7296.328749][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7296.328755][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7296.328759][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7296.328762][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7296.328770][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7296.328777][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7296.328783][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7296.328787][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7296.328792][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7296.328796][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7296.328800][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7296.328808][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7296.328812][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7296.328816][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7296.328821][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7296.328825][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7296.328828][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7296.328832][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7296.328835][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7296.328839][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7296.328842][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7296.328845][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7296.328848][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7296.328852][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7296.328854][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7296.328859][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7296.328863][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7296.328866][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7296.328870][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7296.328874][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7296.328877][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7296.328881][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7296.328884][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7296.328886][ C3] kthread (kernel/kthread.c:388) 
[ 7296.328890][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7296.328892][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7296.328895][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7296.328897][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7296.328905][    C3]  </TASK>
| [ 7298.565229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7298.565600][    C3] rcu: 3-....: (3766338 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=831527
| [ 7298.566184][    C3] rcu: (t=3771658 jiffies g=2723341 q=5646 ncpus=4)
[ 7298.567016][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7298.567642][    C3] Workqueue: netns cleanup_net
[ 7298.567899][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7298.568234][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 7298.569227][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 7298.569543][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7298.569952][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7298.570360][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7298.570770][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7298.571179][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7298.571587][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7298.572045][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7298.572388][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7298.572800][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7298.573209][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7298.573617][    C3] PKRU: 55555554
[ 7298.573804][    C3] Call Trace:
[ 7298.573980][    C3]  <IRQ>
[ 7298.574131][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 7298.574411][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 7298.574671][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 7298.574929][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 7298.575226][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 7298.575461][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 7298.575740][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 7298.576022][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 7298.576286][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 7298.576578][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7298.576828][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 7298.577148][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7298.577430][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7298.577725][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7298.577997][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7298.578310][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7298.578579][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7298.578895][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7298.579199][    C3]  </IRQ>
[ 7298.579351][    C3]  <TASK>
[ 7298.579507][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7298.579829][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7298.580131][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7298.580435][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7298.580755][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7298.581056][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7298.581312][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7298.581591][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7298.581884][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7298.582129][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7298.582374][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7298.582614][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7298.582853][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7298.583101][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7298.583405][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7298.583667][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7298.584007][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7298.584284][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7298.584581][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7298.584884][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7298.585176][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7298.585425][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7298.585683][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7298.585931][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7298.586254][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7298.586553][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7298.586880][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7298.587191][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7298.587447][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7298.587698][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7298.587951][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7298.588268][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7298.588513][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7298.588753][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7298.589085][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7298.589335][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7298.589684][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7298.590009][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7298.590301][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7298.590620][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7298.590866][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7298.591100][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7298.591391][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7298.591649][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7298.591896][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7298.592164][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7298.592423][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7298.592660][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7298.592942][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7298.593185][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7298.593431][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7298.593772][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7298.594039][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7298.594307][ C3] kthread (kernel/kthread.c:388) 
[ 7298.594521][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7298.594760][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7298.594995][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7298.595236][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7324.564889][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7324.565383][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7324.565886][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7324.566375][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7324.567354][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7324.567983][    C3] Workqueue: netns cleanup_net
[ 7324.568238][ C3] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7324.568569][ C3] Code: 0f 1f 44 00 00 49 89 fd 49 89 fc 41 be 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 <be> 04 00 00 00 48 89 ef e8 d0 79 e9 fd 41 0f b6 45 00 41 38 c4 7c
All code
========
   0:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   5:	49 89 fd             	mov    %rdi,%r13
   8:	49 89 fc             	mov    %rdi,%r12
   b:	41 be 01 00 00 00    	mov    $0x1,%r14d
  11:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  18:	fc ff df 
  1b:	49 c1 ed 03          	shr    $0x3,%r13
  1f:	41 83 e4 07          	and    $0x7,%r12d
  23:	49 01 c5             	add    %rax,%r13
  26:	41 83 c4 03          	add    $0x3,%r12d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 d0 79 e9 fd       	call   0xfffffffffde97a07
  37:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  3c:	41 38 c4             	cmp    %al,%r12b
  3f:	7c                   	.byte 0x7c

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 d0 79 e9 fd       	call   0xfffffffffde979dd
   d:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  12:	41 38 c4             	cmp    %al,%r12b
  15:	7c                   	.byte 0x7c
[ 7324.569571][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 7324.569890][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7324.570302][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7324.570717][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7324.571129][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7324.571540][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7324.571952][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7324.572414][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7324.572759][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7324.573173][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7324.573584][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7324.573997][    C3] PKRU: 55555554
[ 7324.574184][    C3] Call Trace:
[ 7324.574362][    C3]  <IRQ>
[ 7324.574514][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7324.574786][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7324.575039][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7324.575326][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7324.575609][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7324.575909][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7324.576181][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7324.576497][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7324.576765][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7324.577083][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7324.577387][    C3]  </IRQ>
[ 7324.577540][    C3]  <TASK>
[ 7324.577694][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7324.578019][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7324.578326][ C3] ? queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7324.578623][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7324.578946][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7324.579252][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7324.579511][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7324.579790][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7324.580084][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7324.580330][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7324.580579][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7324.580819][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7324.581057][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7324.581308][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7324.581616][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7324.581880][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7324.582224][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7324.582500][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7324.582800][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7324.583104][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7324.583402][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7324.583649][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7324.583910][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7324.584158][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7324.584486][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7324.584784][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7324.585108][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7324.585423][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7324.585693][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7324.585947][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7324.586197][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7324.586514][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7324.586762][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7324.587001][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7324.587335][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7324.587585][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7324.587938][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7324.588266][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7324.588560][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7324.588882][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7324.589131][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7324.589363][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7324.589659][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7324.589920][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7324.590164][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7324.590435][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7324.590696][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7324.590937][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7324.591219][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7324.591463][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7324.591711][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7324.592055][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7324.592324][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7324.592592][ C3] kthread (kernel/kthread.c:388) 
[ 7324.592805][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7324.593048][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7324.593283][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7324.593525][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7352.564896][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7352.565390][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7352.565899][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7352.566392][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7352.567369][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7352.568004][    C3] Workqueue: netns cleanup_net
[ 7352.568258][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 7352.568528][ C3] Code: 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 <44> 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb
All code
========
   0:	6c                   	insb   (%dx),%es:(%rdi)
   1:	24 30                	and    $0x30,%al
   3:	e8 7c f5 ff ff       	call   0xfffffffffffff584
   8:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
   d:	e8 92 fa ff ff       	call   0xfffffffffffffaa4
  12:	0f b6 d3             	movzbl %bl,%edx
  15:	48 89 ee             	mov    %rbp,%rsi
  18:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  1d:	e8 02 fd ff ff       	call   0xfffffffffffffd24
  22:	ff 34 24             	push   (%rsp)
  25:	9d                   	popf
  26:	48 83 c4 70          	add    $0x70,%rsp
  2a:*	44 89 e0             	mov    %r12d,%eax		<-- trapping instruction
  2d:	5b                   	pop    %rbx
  2e:	5d                   	pop    %rbp
  2f:	41 5c                	pop    %r12
  31:	41 5d                	pop    %r13
  33:	41 5e                	pop    %r14
  35:	41 5f                	pop    %r15
  37:	c3                   	ret
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	cc                   	int3
  3c:	45 31 e4             	xor    %r12d,%r12d
  3f:	eb                   	.byte 0xeb

Code starting with the faulting instruction
===========================================
   0:	44 89 e0             	mov    %r12d,%eax
   3:	5b                   	pop    %rbx
   4:	5d                   	pop    %rbp
   5:	41 5c                	pop    %r12
   7:	41 5d                	pop    %r13
   9:	41 5e                	pop    %r14
   b:	41 5f                	pop    %r15
   d:	c3                   	ret
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	cc                   	int3
  12:	45 31 e4             	xor    %r12d,%r12d
  15:	eb                   	.byte 0xeb
[ 7352.569528][    C3] RSP: 0018:ffffc9000051f498 EFLAGS: 00000282
[ 7352.569847][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 7352.570259][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7352.570670][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7352.571083][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 7352.571497][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 7352.571909][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7352.572370][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7352.572717][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7352.573131][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7352.573544][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7352.573955][    C3] PKRU: 55555554
[ 7352.574143][    C3] Call Trace:
[ 7352.574321][    C3]  <IRQ>
[ 7352.574473][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7352.574745][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7352.574998][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7352.575284][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7352.575606][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7352.575905][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7352.576178][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7352.576494][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7352.576765][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7352.577084][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7352.577386][    C3]  </IRQ>
[ 7352.577543][    C3]  <TASK>
[ 7352.577697][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7352.578021][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7352.578328][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7352.578630][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 7352.578873][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7352.579165][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7352.579488][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7352.579795][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7352.580053][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7352.580334][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7352.580626][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7352.580872][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7352.581120][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7352.581357][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7352.581597][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7352.581847][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7352.582153][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7352.582418][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7352.582761][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7352.583038][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7352.583337][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7352.583642][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7352.583937][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7352.584187][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7352.584447][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7352.584697][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7352.585023][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7352.585320][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7352.585688][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7352.586003][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7352.586260][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7352.586511][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7352.586760][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7352.587079][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7352.587329][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7352.587567][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7352.587899][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7352.588151][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7352.588503][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7352.588828][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7352.589123][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7352.589446][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7352.589693][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7352.589925][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7352.590219][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7352.590478][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7352.590722][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7352.590992][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7352.591254][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7352.591494][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7352.591776][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7352.592019][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7352.592265][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7352.592609][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7352.592877][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7352.593144][ C3] kthread (kernel/kthread.c:388) 
[ 7352.593358][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7352.593602][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7352.593833][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7352.594076][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7352.594332][    C3]  </TASK>
| [ 7376.599229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7376.599612][    C3] rcu: 3-....: (3844282 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=847970
| [ 7376.600192][    C3] rcu: (t=3849692 jiffies g=2723341 q=5646 ncpus=4)
[ 7376.601027][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7376.601659][    C3] Workqueue: netns cleanup_net
[ 7376.601915][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7376.602253][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 7376.603253][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 7376.603570][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7376.603983][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7376.604396][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7376.604808][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7376.605218][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7376.605636][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7376.606101][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7376.606447][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7376.606862][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7376.607272][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7376.607686][    C3] PKRU: 55555554
[ 7376.607873][    C3] Call Trace:
[ 7376.608050][    C3]  <IRQ>
[ 7376.608203][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 7376.608487][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 7376.608747][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 7376.609005][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 7376.609302][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 7376.609541][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 7376.609819][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 7376.610097][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 7376.610362][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 7376.610655][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7376.610906][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 7376.611229][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7376.611509][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7376.611809][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7376.612082][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7376.612399][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7376.612670][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7376.612989][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7376.613294][    C3]  </IRQ>
[ 7376.613449][    C3]  <TASK>
[ 7376.613604][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7376.613932][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7376.614240][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7376.614545][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7376.614868][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7376.615173][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7376.615435][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7376.615718][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7376.616011][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7376.616257][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7376.616506][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7376.616742][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7376.616983][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7376.617234][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7376.617538][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7376.617802][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7376.618147][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7376.618425][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7376.618723][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7376.619028][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7376.619324][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7376.619575][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7376.619835][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7376.620082][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7376.620408][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7376.620705][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7376.621029][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7376.621345][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7376.621601][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7376.621851][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7376.622105][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7376.622423][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7376.622672][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7376.622910][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7376.623243][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7376.623494][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7376.623846][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7376.624174][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7376.624470][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7376.624793][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7376.625036][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7376.625272][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7376.625568][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7376.625829][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7376.626076][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7376.626346][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7376.626606][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7376.626847][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7376.627128][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7376.627373][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7376.627618][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7376.627962][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7376.628229][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7376.628497][ C3] kthread (kernel/kthread.c:388) 
[ 7376.628711][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7376.628954][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7376.629186][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7376.629428][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7394.631245][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 3867429 jiffies s: 467069 root: 0x8/.
| [ 7394.631911][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7394.632287][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 7394.632570][    C3] NMI backtrace for cpu 3
[ 7394.632580][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7394.632583][    C3] Workqueue: netns cleanup_net
[ 7394.632590][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7394.632596][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 7394.632598][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 7394.632601][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7394.632603][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7394.632604][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7394.632606][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7394.632608][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7394.632609][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7394.632611][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7394.632615][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7394.632617][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7394.632618][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7394.632619][    C3] PKRU: 55555554
[ 7394.632621][    C3] Call Trace:
[ 7394.632623][    C3]  <NMI>
[ 7394.632627][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 7394.632632][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 7394.632636][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 7394.632641][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 7394.632645][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 7394.632648][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 7394.632652][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7394.632656][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7394.632659][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7394.632663][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7394.632666][    C3]  </NMI>
[ 7394.632667][    C3]  <TASK>
[ 7394.632669][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7394.632673][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7394.632677][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7394.632682][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7394.632685][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7394.632689][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7394.632691][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7394.632696][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7394.632699][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7394.632703][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7394.632706][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7394.632711][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7394.632714][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7394.632717][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7394.632721][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7394.632726][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7394.632729][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7394.632735][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7394.632741][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7394.632744][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7394.632747][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7394.632755][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7394.632762][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7394.632767][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7394.632772][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7394.632776][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7394.632780][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7394.632785][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7394.632793][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7394.632797][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7394.632800][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7394.632806][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7394.632809][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7394.632812][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7394.632816][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7394.632820][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7394.632824][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7394.632827][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7394.632830][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7394.632833][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7394.632836][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7394.632838][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7394.632844][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7394.632848][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7394.632851][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7394.632855][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7394.632859][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7394.632862][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7394.632866][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7394.632869][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7394.632871][ C3] kthread (kernel/kthread.c:388) 
[ 7394.632874][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7394.632877][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7394.632880][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7394.632882][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7420.564892][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7420.565386][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7420.565877][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7420.566364][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7420.567331][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7420.567960][    C3] Workqueue: netns cleanup_net
[ 7420.568213][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7420.568507][ C3] Code: 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23 44 89 c2 <e8> 57 e8 ff ff 83 f0 01 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff
All code
========
   0:	01 00                	add    %eax,(%rax)
   2:	00 48 89             	add    %cl,-0x77(%rax)
   5:	f8                   	clc
   6:	41 54                	push   %r12
   8:	44 0f b6 c2          	movzbl %dl,%r8d
   c:	48 01 f0             	add    %rsi,%rax
   f:	55                   	push   %rbp
  10:	53                   	push   %rbx
  11:	72 14                	jb     0x27
  13:	eb 26                	jmp    0x3b
  15:	cc                   	int3
  16:	cc                   	int3
  17:	cc                   	int3
  18:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  1f:	ff ff fe 
  22:	48 39 c7             	cmp    %rax,%rdi
  25:	77 23                	ja     0x4a
  27:	44 89 c2             	mov    %r8d,%edx
  2a:*	e8 57 e8 ff ff       	call   0xffffffffffffe886		<-- trapping instruction
  2f:	83 f0 01             	xor    $0x1,%eax
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	41 5c                	pop    %r12
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	48                   	rex.W
  3c:	b8                   	.byte 0xb8
  3d:	ff                   	(bad)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	e8 57 e8 ff ff       	call   0xffffffffffffe85c
   5:	83 f0 01             	xor    $0x1,%eax
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	41 5c                	pop    %r12
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	48                   	rex.W
  12:	b8                   	.byte 0xb8
  13:	ff                   	(bad)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[ 7420.569501][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000213
[ 7420.569817][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 7420.570228][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7420.570638][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 7420.571048][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7420.571457][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7420.571865][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7420.572324][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7420.572668][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7420.573080][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7420.573489][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7420.573900][    C3] PKRU: 55555554
[ 7420.574085][    C3] Call Trace:
[ 7420.574262][    C3]  <IRQ>
[ 7420.574413][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7420.574685][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7420.574938][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7420.575239][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7420.575520][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7420.575814][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7420.576087][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7420.576401][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7420.576670][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7420.576989][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7420.577293][    C3]  </IRQ>
[ 7420.577455][    C3]  <TASK>
[ 7420.577610][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7420.577935][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7420.578235][ C3] ? kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7420.578500][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7420.578792][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7420.579113][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7420.579418][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7420.579677][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7420.579957][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7420.580250][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7420.580497][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7420.580747][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7420.580983][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7420.581224][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7420.581476][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7420.581782][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7420.582045][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7420.582389][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7420.582667][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7420.582967][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7420.583272][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7420.583566][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7420.583816][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7420.584077][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7420.584326][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7420.584653][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7420.584949][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7420.585279][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7420.585594][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7420.585851][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7420.586102][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7420.586354][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7420.586672][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7420.586921][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7420.587158][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7420.587490][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7420.587743][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7420.588095][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7420.588421][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7420.588714][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7420.589036][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7420.589282][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7420.589515][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7420.589808][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7420.590068][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7420.590314][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7420.590582][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7420.590844][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7420.591085][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7420.591366][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7420.591610][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7420.591857][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7420.592202][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7420.592472][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7420.592739][ C3] kthread (kernel/kthread.c:388) 
[ 7420.592952][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7420.593194][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7420.593426][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7420.593668][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7448.564899][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7448.565395][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7448.565883][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7448.566369][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7448.567341][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7448.567969][    C3] Workqueue: netns cleanup_net
[ 7448.568221][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7448.568499][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 7448.569494][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 7448.569810][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 7448.570220][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7448.570628][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7448.571038][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7448.571448][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 7448.571856][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7448.572315][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7448.572657][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7448.573067][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7448.573477][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7448.573885][    C3] PKRU: 55555554
[ 7448.574073][    C3] Call Trace:
[ 7448.574248][    C3]  <IRQ>
[ 7448.574401][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7448.574670][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7448.574922][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7448.575210][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7448.575489][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7448.575787][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7448.576059][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7448.576375][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7448.576644][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7448.576961][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7448.577263][    C3]  </IRQ>
[ 7448.577418][    C3]  <TASK>
[ 7448.577573][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7448.577896][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7448.578200][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7448.578504][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7448.578751][ C3] kasan_report (mm/kasan/report.c:585) 
[ 7448.578977][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7448.579278][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7448.579570][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7448.579892][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7448.580197][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7448.580454][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7448.580733][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7448.581025][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7448.581272][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7448.581521][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7448.581756][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7448.581996][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7448.582250][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7448.582556][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7448.582818][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7448.583160][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7448.583435][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7448.583730][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7448.584033][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7448.584326][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7448.584575][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7448.584834][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7448.585085][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7448.585408][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7448.585703][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7448.586025][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7448.586339][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7448.586594][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7448.586842][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7448.587092][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7448.587409][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7448.587656][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7448.587891][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7448.588221][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7448.588472][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7448.588822][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7448.589145][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7448.589438][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7448.589759][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7448.590003][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7448.590234][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7448.590526][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7448.590784][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7448.591028][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7448.591294][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7448.591554][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7448.591792][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7448.592072][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7448.592314][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7448.592558][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7448.592900][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7448.593166][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7448.593431][ C3] kthread (kernel/kthread.c:388) 
[ 7448.593644][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7448.593886][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7448.594116][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7448.594357][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7448.594612][    C3]  </TASK>
| [ 7454.633229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7454.633610][    C3] rcu: 3-....: (3922202 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=864264
| [ 7454.634188][    C3] rcu: (t=3927726 jiffies g=2723341 q=5646 ncpus=4)
[ 7454.635026][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7454.635654][    C3] Workqueue: netns cleanup_net
[ 7454.635909][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7454.636245][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 7454.637239][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 7454.637555][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7454.637964][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7454.638374][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7454.638786][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7454.639195][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7454.639603][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7454.640063][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7454.640404][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7454.640816][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7454.641225][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7454.641634][    C3] PKRU: 55555554
[ 7454.641821][    C3] Call Trace:
[ 7454.641996][    C3]  <IRQ>
[ 7454.642147][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 7454.642428][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 7454.642686][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 7454.642944][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 7454.643240][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 7454.643474][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 7454.643753][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 7454.644030][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 7454.644293][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 7454.644585][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7454.644835][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 7454.645161][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7454.645441][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7454.645738][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7454.646012][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7454.646325][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7454.646594][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7454.646910][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7454.647216][    C3]  </IRQ>
[ 7454.647370][    C3]  <TASK>
[ 7454.647527][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7454.647850][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7454.648152][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7454.648456][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7454.648778][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7454.649081][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7454.649338][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7454.649618][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7454.649911][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7454.650156][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7454.650406][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7454.650647][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7454.650886][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7454.651134][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7454.651438][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7454.651701][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7454.652042][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7454.652322][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7454.652620][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7454.652924][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7454.653218][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7454.653468][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7454.653727][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7454.653971][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7454.654294][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7454.654594][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7454.654916][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7454.655234][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7454.655489][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7454.655744][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7454.655996][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7454.656314][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7454.656560][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7454.656797][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7454.657130][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7454.657382][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7454.657731][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7454.658057][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7454.658351][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7454.658671][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7454.658916][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7454.659150][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7454.659442][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7454.659700][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7454.659945][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7454.660214][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7454.660474][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7454.660712][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7454.660994][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7454.661234][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7454.661479][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7454.661820][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7454.662087][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7454.662354][ C3] kthread (kernel/kthread.c:388) 
[ 7454.662567][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7454.662807][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7454.663040][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7454.663281][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7480.564890][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7480.565379][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7480.565872][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7480.566357][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7480.567326][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7480.567954][    C3] Workqueue: netns cleanup_net
[ 7480.568207][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 7480.568475][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 7480.569473][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 7480.569789][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 7480.570198][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7480.570609][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7480.571019][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 7480.571429][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 7480.571837][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7480.572293][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7480.572634][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7480.573044][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7480.573452][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7480.573860][    C3] PKRU: 55555554
[ 7480.574045][    C3] Call Trace:
[ 7480.574221][    C3]  <IRQ>
[ 7480.574373][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7480.574643][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7480.574897][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7480.575182][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7480.575465][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7480.575758][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7480.576031][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7480.576345][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7480.576612][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7480.576930][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7480.577232][    C3]  </IRQ>
[ 7480.577385][    C3]  <TASK>
[ 7480.577539][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7480.577861][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7480.578166][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7480.578469][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 7480.578708][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7480.579000][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7480.579320][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7480.579623][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7480.579880][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7480.580158][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7480.580453][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7480.580696][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7480.580944][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7480.581182][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7480.581420][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7480.581668][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7480.581974][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7480.582238][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7480.582580][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7480.582854][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7480.583156][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7480.583456][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7480.583756][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7480.584005][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7480.584263][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7480.584508][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7480.584833][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7480.585135][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7480.585459][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7480.585771][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7480.586025][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7480.586276][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7480.586529][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7480.586843][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7480.587089][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7480.587328][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7480.587659][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7480.587909][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7480.588258][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7480.588588][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7480.588880][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7480.589202][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7480.589448][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7480.589682][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7480.589974][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7480.590234][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7480.590480][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7480.590749][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7480.591012][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7480.591248][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7480.591531][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7480.591773][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7480.592019][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7480.592360][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7480.592626][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7480.592892][ C3] kthread (kernel/kthread.c:388) 
[ 7480.593107][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7480.593351][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7480.593585][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7480.593825][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7492.935247][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 3965733 jiffies s: 467069 root: 0x8/.
| [ 7492.935916][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7492.936295][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 7492.936576][    C3] NMI backtrace for cpu 3
[ 7492.936586][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7492.936589][    C3] Workqueue: netns cleanup_net
[ 7492.936596][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7492.936602][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 7492.936605][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 7492.936607][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 7492.936609][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7492.936610][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7492.936612][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7492.936613][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 7492.936615][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7492.936617][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7492.936621][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7492.936623][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7492.936624][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7492.936625][    C3] PKRU: 55555554
[ 7492.936627][    C3] Call Trace:
[ 7492.936630][    C3]  <NMI>
[ 7492.936633][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 7492.936638][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 7492.936642][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 7492.936647][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 7492.936651][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 7492.936654][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 7492.936657][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7492.936663][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7492.936666][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7492.936669][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7492.936672][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7492.936675][    C3]  </NMI>
[ 7492.936676][    C3]  <TASK>
[ 7492.936677][ C3] kasan_report (mm/kasan/report.c:585) 
[ 7492.936683][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7492.936686][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7492.936690][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7492.936695][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7492.936700][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7492.936703][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7492.936706][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7492.936709][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7492.936714][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7492.936716][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7492.936721][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7492.936723][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7492.936728][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7492.936731][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7492.936734][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7492.936738][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7492.936743][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7492.936746][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7492.936753][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7492.936759][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7492.936762][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7492.936766][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7492.936773][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7492.936780][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7492.936786][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7492.936791][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7492.936795][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7492.936799][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7492.936803][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7492.936811][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7492.936815][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7492.936818][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7492.936823][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7492.936827][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7492.936830][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7492.936835][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7492.936838][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7492.936841][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7492.936844][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7492.936847][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7492.936850][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7492.936853][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7492.936855][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7492.936860][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7492.936864][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7492.936867][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7492.936872][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7492.936875][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7492.936878][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7492.936882][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7492.936885][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7492.936887][ C3] kthread (kernel/kthread.c:388) 
[ 7492.936890][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7492.936892][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7492.936895][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7492.936897][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7520.564929][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7520.565416][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7520.565908][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7520.566393][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7520.567366][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7520.567996][    C3] Workqueue: netns cleanup_net
[ 7520.568249][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 7520.568517][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 7520.569517][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 7520.569833][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 7520.570246][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7520.570657][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7520.571065][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 7520.571475][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 7520.571885][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7520.572345][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7520.572688][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7520.573103][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7520.573512][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7520.573923][    C3] PKRU: 55555554
[ 7520.574110][    C3] Call Trace:
[ 7520.574287][    C3]  <IRQ>
[ 7520.574441][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7520.574730][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7520.574979][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7520.575266][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7520.575547][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7520.575842][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7520.576117][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7520.576432][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7520.576702][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7520.577021][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7520.577326][    C3]  </IRQ>
[ 7520.577480][    C3]  <TASK>
[ 7520.577635][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7520.577957][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7520.578258][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7520.578554][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 7520.578797][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7520.579056][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7520.579346][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7520.579668][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7520.579974][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7520.580232][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7520.580511][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7520.580803][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7520.581050][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7520.581298][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7520.581536][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7520.581775][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7520.582025][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7520.582335][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7520.582597][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7520.582940][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7520.583216][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7520.583513][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7520.583817][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7520.584112][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7520.584361][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7520.584619][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7520.584871][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7520.585195][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7520.585488][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7520.585810][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7520.586125][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7520.586379][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7520.586629][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7520.586879][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7520.587195][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7520.587443][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7520.587682][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7520.588021][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7520.588271][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7520.588621][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7520.588945][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7520.589238][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7520.589559][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7520.589804][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7520.590035][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7520.590328][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7520.590588][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7520.590833][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7520.591103][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7520.591363][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7520.591602][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7520.591883][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7520.592126][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7520.592374][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7520.592717][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7520.592983][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7520.593250][ C3] kthread (kernel/kthread.c:388) 
[ 7520.593463][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7520.593706][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7520.593938][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7520.594180][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7520.594438][    C3]  </TASK>
| [ 7532.667229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7532.667613][    C3] rcu: 3-....: (4000120 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=880562
| [ 7532.668192][    C3] rcu: (t=4005760 jiffies g=2723341 q=5646 ncpus=4)
[ 7532.669028][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7532.669656][    C3] Workqueue: netns cleanup_net
[ 7532.669911][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 7532.670209][ C3] Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 <44> 0f b6 c2 48 01 f0 55 53 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	66 0f 1f 00          	nopw   (%rax)
  1c:	48 85 f6             	test   %rsi,%rsi
  1f:	0f 84 5e 01 00 00    	je     0x183
  25:	48 89 f8             	mov    %rdi,%rax
  28:	41 54                	push   %r12
  2a:*	44 0f b6 c2          	movzbl %dl,%r8d		<-- trapping instruction
  2e:	48 01 f0             	add    %rsi,%rax
  31:	55                   	push   %rbp
  32:	53                   	push   %rbx
  33:	72 14                	jb     0x49
  35:	eb 26                	jmp    0x5d
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	48                   	rex.W
  3b:	b8 ff ff ff ff       	mov    $0xffffffff,%eax

Code starting with the faulting instruction
===========================================
   0:	44 0f b6 c2          	movzbl %dl,%r8d
   4:	48 01 f0             	add    %rsi,%rax
   7:	55                   	push   %rbp
   8:	53                   	push   %rbx
   9:	72 14                	jb     0x1f
   b:	eb 26                	jmp    0x33
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	48                   	rex.W
  11:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
[ 7532.671206][    C3] RSP: 0018:ffffc9000051f4c0 EFLAGS: 00000202
[ 7532.671522][    C3] RAX: ffff888022f2b208 RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 7532.671934][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7532.672343][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7532.672752][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7532.673162][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7532.673573][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7532.674034][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7532.674377][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7532.674793][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7532.675203][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7532.675612][    C3] PKRU: 55555554
[ 7532.675799][    C3] Call Trace:
[ 7532.675973][    C3]  <IRQ>
[ 7532.676127][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 7532.676407][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 7532.676666][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 7532.676924][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 7532.677217][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 7532.677455][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 7532.677730][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 7532.678007][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 7532.678271][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 7532.678565][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7532.678823][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 7532.679143][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7532.679424][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7532.679719][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7532.679991][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7532.680306][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7532.680577][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7532.680896][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7532.681200][    C3]  </IRQ>
[ 7532.681356][    C3]  <TASK>
[ 7532.681510][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7532.681834][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7532.682132][ C3] ? kasan_check_range (mm/kasan/generic.c:188) 
[ 7532.682396][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7532.682685][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7532.683006][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7532.683311][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7532.683567][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7532.683847][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7532.684139][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7532.684385][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7532.684638][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7532.684876][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7532.685116][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7532.685366][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7532.685671][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7532.685934][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7532.686277][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7532.686557][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7532.686856][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7532.687160][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7532.687456][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7532.687705][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7532.687964][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7532.688212][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7532.688537][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7532.688835][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7532.689158][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7532.689472][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7532.689727][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7532.689980][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7532.690232][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7532.690551][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7532.690796][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7532.691033][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7532.691365][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7532.691616][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7532.691966][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7532.692294][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7532.692588][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7532.692910][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7532.693156][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7532.693391][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7532.693684][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7532.693944][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7532.694189][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7532.694459][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7532.694727][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7532.694966][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7532.695250][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7532.695491][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7532.695735][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7532.696080][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7532.696349][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7532.696616][ C3] kthread (kernel/kthread.c:388) 
[ 7532.696832][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7532.697073][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7532.697306][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7532.697548][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7560.564900][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7560.565396][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7560.565888][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7560.566372][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7560.567344][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7560.567977][    C3] Workqueue: netns cleanup_net
[ 7560.568230][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 7560.568501][ C3] Code: 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	41 57                	push   %r15
  1a:	41 56                	push   %r14
  1c:	41 55                	push   %r13
  1e:	41 54                	push   %r12
  20:	55                   	push   %rbp
  21:	53                   	push   %rbx
  22:	48 83 ec 70          	sub    $0x70,%rsp
  26:	9c                   	pushf
  27:	8f 04 24             	pop    (%rsp)
  2a:*	0f 01 ca             	clac		<-- trapping instruction
  2d:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  34:	1f 00 
  36:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3d:	85 c0                	test   %eax,%eax
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	0f 01 ca             	clac
   3:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   a:	1f 00 
   c:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  13:	85 c0                	test   %eax,%eax
  15:	0f                   	.byte 0xf
[ 7560.569504][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 7560.569819][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 7560.570232][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7560.570645][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 7560.571055][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7560.571466][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7560.571880][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7560.572341][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7560.572684][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7560.573096][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7560.573508][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7560.573921][    C3] PKRU: 55555554
[ 7560.574107][    C3] Call Trace:
[ 7560.574282][    C3]  <IRQ>
[ 7560.574437][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7560.574731][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7560.574982][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7560.575268][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7560.575547][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7560.575846][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7560.576119][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7560.576433][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7560.576703][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7560.577019][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7560.577324][    C3]  </IRQ>
[ 7560.577477][    C3]  <TASK>
[ 7560.577635][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7560.577961][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7560.578257][ C3] ? kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 7560.578499][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7560.578757][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7560.579045][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7560.579369][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7560.579673][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7560.579929][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7560.580211][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7560.580503][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7560.580750][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7560.580998][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7560.581234][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7560.581474][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7560.581724][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7560.582028][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7560.582291][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7560.582634][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7560.582912][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7560.583210][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7560.583515][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7560.583810][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7560.584063][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7560.584324][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7560.584592][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7560.584917][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7560.585218][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7560.585548][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7560.585863][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7560.586119][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7560.586373][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7560.586626][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7560.586944][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7560.587192][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7560.587430][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7560.587763][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7560.588015][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7560.588366][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7560.588693][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7560.588989][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7560.589312][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7560.589557][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7560.589794][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7560.590085][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7560.590345][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7560.590593][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7560.590863][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7560.591126][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7560.591365][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7560.591648][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7560.591892][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7560.592136][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7560.592482][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7560.592752][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7560.593020][ C3] kthread (kernel/kthread.c:388) 
[ 7560.593235][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7560.593477][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7560.593713][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7560.593956][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7588.564893][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7588.565384][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7588.565874][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7588.566357][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7588.567329][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7588.567960][    C3] Workqueue: netns cleanup_net
[ 7588.568212][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7588.568481][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 7588.569482][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 7588.569796][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 7588.570208][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7588.570616][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 7588.571027][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7588.571438][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7588.571851][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7588.572310][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7588.572650][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7588.573062][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7588.573472][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7588.573881][    C3] PKRU: 55555554
[ 7588.574068][    C3] Call Trace:
[ 7588.574241][    C3]  <IRQ>
[ 7588.574400][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7588.574670][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7588.574919][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7588.575204][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7588.575482][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7588.575777][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7588.576050][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7588.576362][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7588.576632][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7588.576948][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7588.577253][    C3]  </IRQ>
[ 7588.577406][    C3]  <TASK>
[ 7588.577563][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7588.577886][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7588.578182][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7588.578422][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7588.578717][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 7588.578957][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7588.579214][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7588.579501][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7588.579823][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7588.580128][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7588.580384][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7588.580664][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7588.580956][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7588.581201][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7588.581450][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7588.581685][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7588.581925][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7588.582175][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7588.582483][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7588.582745][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7588.583089][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7588.583365][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7588.583663][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7588.583967][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7588.584260][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7588.584515][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7588.584773][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7588.585021][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7588.585346][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7588.585641][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7588.585966][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7588.586280][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7588.586534][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7588.586785][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7588.587038][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7588.587359][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7588.587608][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7588.587844][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7588.588177][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7588.588429][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7588.588778][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7588.589105][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7588.589399][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7588.589721][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7588.589965][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7588.590201][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7588.590493][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7588.590753][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7588.590999][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7588.591267][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7588.591528][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7588.591767][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7588.592048][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7588.592291][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7588.592535][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7588.592880][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7588.593149][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7588.593416][ C3] kthread (kernel/kthread.c:388) 
[ 7588.593629][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7588.593870][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7588.594101][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7588.594350][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7591.239242][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 4064037 jiffies s: 467069 root: 0x8/.
| [ 7591.239903][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7591.240278][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 7591.240561][    C3] NMI backtrace for cpu 3
[ 7591.240570][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7591.240573][    C3] Workqueue: netns cleanup_net
[ 7591.240579][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7591.240585][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 7591.240588][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 7591.240590][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7591.240592][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7591.240593][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7591.240595][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7591.240597][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7591.240598][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7591.240600][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7591.240604][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7591.240606][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7591.240607][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7591.240608][    C3] PKRU: 55555554
[ 7591.240609][    C3] Call Trace:
[ 7591.240611][    C3]  <NMI>
[ 7591.240614][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 7591.240620][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 7591.240624][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 7591.240629][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 7591.240632][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 7591.240635][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 7591.240639][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7591.240643][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7591.240646][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7591.240650][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7591.240653][    C3]  </NMI>
[ 7591.240654][    C3]  <TASK>
[ 7591.240655][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7591.240659][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7591.240664][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7591.240669][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7591.240672][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7591.240675][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7591.240677][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7591.240682][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7591.240685][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7591.240689][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7591.240692][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7591.240697][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7591.240700][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7591.240703][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7591.240707][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7591.240711][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7591.240715][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7591.240720][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7591.240726][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7591.240729][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7591.240732][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7591.240739][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7591.240746][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7591.240752][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7591.240756][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7591.240761][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7591.240765][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7591.240769][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7591.240777][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7591.240780][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7591.240784][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7591.240789][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7591.240792][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7591.240795][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7591.240799][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7591.240803][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7591.240807][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7591.240810][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7591.240813][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7591.240816][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7591.240819][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7591.240821][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7591.240826][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7591.240830][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7591.240833][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7591.240838][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7591.240841][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7591.240844][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7591.240848][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7591.240851][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7591.240853][ C3] kthread (kernel/kthread.c:388) 
[ 7591.240855][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7591.240858][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7591.240861][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7591.240863][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7591.240871][    C3]  </TASK>
| [ 7610.701229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7610.701612][    C3] rcu: 3-....: (4078039 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=896915
| [ 7610.702188][    C3] rcu: (t=4083794 jiffies g=2723341 q=5646 ncpus=4)
[ 7610.703019][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7610.703648][    C3] Workqueue: netns cleanup_net
[ 7610.703903][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7610.704180][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 7610.705179][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 7610.705496][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 7610.705906][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7610.706316][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7610.706728][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7610.707137][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 7610.707547][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7610.708007][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7610.708349][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7610.708763][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7610.709173][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7610.709582][    C3] PKRU: 55555554
[ 7610.709770][    C3] Call Trace:
[ 7610.709947][    C3]  <IRQ>
[ 7610.710099][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 7610.710379][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 7610.710642][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 7610.710901][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 7610.711197][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 7610.711433][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 7610.711711][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 7610.711990][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 7610.712253][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 7610.712546][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7610.712796][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 7610.713119][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7610.713398][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7610.713695][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7610.713969][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7610.714286][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7610.714556][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7610.714872][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7610.715178][    C3]  </IRQ>
[ 7610.715332][    C3]  <TASK>
[ 7610.715488][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7610.715810][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7610.716117][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7610.716422][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7610.716667][ C3] kasan_report (mm/kasan/report.c:585) 
[ 7610.716896][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7610.717187][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7610.717509][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7610.717814][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7610.718071][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7610.718348][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7610.718642][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7610.718886][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7610.719135][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7610.719373][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7610.719610][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7610.719860][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7610.720164][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7610.720431][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7610.720773][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7610.721048][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7610.721346][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7610.721647][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7610.721944][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7610.722192][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7610.722452][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7610.722699][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7610.723026][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7610.723321][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7610.723644][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7610.723958][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7610.724218][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7610.724471][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7610.724724][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7610.725040][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7610.725288][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7610.725527][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7610.725858][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7610.726107][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7610.726460][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7610.726786][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7610.727077][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7610.727399][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7610.727646][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7610.727877][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7610.728175][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7610.728435][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7610.728678][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7610.728948][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7610.729207][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7610.729446][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7610.729727][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7610.729971][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7610.730217][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7610.730559][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7610.730827][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7610.731093][ C3] kthread (kernel/kthread.c:388) 
[ 7610.731307][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7610.731549][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7610.731783][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7610.732024][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7636.564899][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7636.565395][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7636.565882][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7636.566370][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7636.567340][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7636.567970][    C3] Workqueue: netns cleanup_net
[ 7636.568224][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7636.568501][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 7636.569500][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 7636.569816][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 7636.570225][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7636.570637][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7636.571049][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7636.571459][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 7636.571867][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7636.572327][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7636.572669][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7636.573083][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7636.573492][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7636.573900][    C3] PKRU: 55555554
[ 7636.574093][    C3] Call Trace:
[ 7636.574271][    C3]  <IRQ>
[ 7636.574422][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7636.574692][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7636.574943][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7636.575227][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7636.575509][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7636.575806][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7636.576078][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7636.576394][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7636.576663][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7636.576981][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7636.577284][    C3]  </IRQ>
[ 7636.577439][    C3]  <TASK>
[ 7636.577593][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7636.577916][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7636.578215][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7636.578513][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7636.578760][ C3] kasan_report (mm/kasan/report.c:585) 
[ 7636.578989][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7636.579246][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7636.579536][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7636.579856][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7636.580163][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7636.580421][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7636.580700][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7636.580995][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7636.581239][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7636.581488][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7636.581726][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7636.581963][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7636.582214][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7636.582523][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7636.582787][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7636.583130][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7636.583406][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7636.583705][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7636.584007][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7636.584310][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7636.584558][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7636.584817][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7636.585065][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7636.585389][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7636.585687][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7636.586010][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7636.586326][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7636.586582][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7636.586834][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7636.587088][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7636.587407][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7636.587655][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7636.587894][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7636.588226][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7636.588476][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7636.588827][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7636.589154][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7636.589447][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7636.589768][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7636.590016][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7636.590247][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7636.590542][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7636.590802][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7636.591046][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7636.591318][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7636.591578][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7636.591816][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7636.592098][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7636.592342][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7636.592590][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7636.592934][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7636.593204][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7636.593470][ C3] kthread (kernel/kthread.c:388) 
[ 7636.593683][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7636.593925][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7636.594163][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7636.594403][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7664.564890][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7664.565382][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7664.565871][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7664.566360][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7664.567327][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7664.567955][    C3] Workqueue: netns cleanup_net
[ 7664.568208][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 7664.568476][ C3] Code: 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	1f                   	(bad)
   1:	84 00                	test   %al,(%rax)
   3:	00 00                	add    %al,(%rax)
   5:	00 00                	add    %al,(%rax)
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	66 0f 1f 00          	nopw   (%rax)
  1b:	41 57                	push   %r15
  1d:	41 56                	push   %r14
  1f:	41 55                	push   %r13
  21:	41 54                	push   %r12
  23:	55                   	push   %rbp
  24:	53                   	push   %rbx
  25:	48 83 ec 70          	sub    $0x70,%rsp
  29:	9c                   	pushf
  2a:*	8f 04 24             	pop    (%rsp)		<-- trapping instruction
  2d:	0f 01 ca             	clac
  30:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  37:	1f 00 
  39:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax

Code starting with the faulting instruction
===========================================
   0:	8f 04 24             	pop    (%rsp)
   3:	0f 01 ca             	clac
   6:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   d:	1f 00 
   f:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
[ 7664.569471][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000282
[ 7664.569788][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 7664.570197][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7664.570606][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 7664.571016][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7664.571427][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7664.571836][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7664.572295][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7664.572634][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7664.573046][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7664.573457][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7664.573865][    C3] PKRU: 55555554
[ 7664.574057][    C3] Call Trace:
[ 7664.574233][    C3]  <IRQ>
[ 7664.574385][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7664.574655][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7664.574907][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7664.575191][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7664.575471][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7664.575769][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7664.576042][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7664.576357][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7664.576628][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7664.576946][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7664.577249][    C3]  </IRQ>
[ 7664.577405][    C3]  <TASK>
[ 7664.577559][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7664.577885][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7664.578181][ C3] ? kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 7664.578423][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7664.578680][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7664.578968][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7664.579291][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7664.579596][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7664.579851][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7664.580130][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7664.580421][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7664.580666][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7664.580914][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7664.581149][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7664.581389][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7664.581638][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7664.581941][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7664.582204][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7664.582547][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7664.582822][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7664.583118][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7664.583421][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7664.583713][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7664.583966][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7664.584223][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7664.584470][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7664.584793][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7664.585088][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7664.585410][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7664.585722][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7664.585976][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7664.586226][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7664.586475][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7664.586791][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7664.587038][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7664.587272][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7664.587602][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7664.587852][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7664.588201][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7664.588525][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7664.588817][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7664.589136][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7664.589381][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7664.589612][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7664.589903][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7664.590160][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7664.590403][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7664.590670][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7664.590929][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7664.591167][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7664.591446][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7664.591686][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7664.591930][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7664.592271][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7664.592538][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7664.592803][ C3] kthread (kernel/kthread.c:388) 
[ 7664.593015][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7664.593256][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7664.593487][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7664.593728][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7664.593987][    C3]  </TASK>
| [ 7688.736229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7688.736615][    C3] rcu: 3-....: (4155983 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=913208
| [ 7688.737190][    C3] rcu: (t=4161829 jiffies g=2723341 q=5646 ncpus=4)
[ 7688.738021][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7688.738648][    C3] Workqueue: netns cleanup_net
[ 7688.738903][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7688.739239][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 7688.740234][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 7688.740551][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7688.740959][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7688.741369][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7688.741778][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7688.742189][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7688.742598][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7688.743056][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7688.743399][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7688.743810][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7688.744226][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7688.744636][    C3] PKRU: 55555554
[ 7688.744822][    C3] Call Trace:
[ 7688.744996][    C3]  <IRQ>
[ 7688.745150][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 7688.745430][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 7688.745690][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 7688.745949][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 7688.746241][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 7688.746480][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 7688.746757][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 7688.747033][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 7688.747297][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 7688.747592][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7688.747839][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 7688.748159][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7688.748442][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7688.748736][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7688.749009][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7688.749324][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7688.749592][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7688.749909][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7688.750213][    C3]  </IRQ>
[ 7688.750368][    C3]  <TASK>
[ 7688.750521][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7688.750846][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7688.751149][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7688.751451][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7688.751772][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7688.752077][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7688.752334][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7688.752612][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7688.752904][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7688.753149][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7688.753397][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7688.753635][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7688.753878][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7688.754128][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7688.754434][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7688.754697][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7688.755039][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7688.755318][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7688.755617][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7688.755918][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7688.756215][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7688.756462][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7688.756722][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7688.756969][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7688.757295][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7688.757589][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7688.757912][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7688.758226][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7688.758482][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7688.758734][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7688.758984][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7688.759301][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7688.759548][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7688.759788][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7688.760119][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7688.760369][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7688.760721][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7688.761047][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7688.761339][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7688.761663][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7688.761910][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7688.762142][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7688.762437][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7688.762695][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7688.762937][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7688.763209][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7688.763468][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7688.763707][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7688.763990][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7688.764235][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7688.764482][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7688.764825][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7688.765093][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7688.765360][ C3] kthread (kernel/kthread.c:388) 
[ 7688.765573][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7688.765816][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7688.766049][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7688.766290][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7689.543243][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 4162341 jiffies s: 467069 root: 0x8/.
| [ 7689.543902][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7689.544277][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 7689.544558][    C3] NMI backtrace for cpu 3
[ 7689.544567][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7689.544570][    C3] Workqueue: netns cleanup_net
[ 7689.544575][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7689.544581][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 7689.544583][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 7689.544585][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7689.544587][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7689.544588][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7689.544590][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7689.544591][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7689.544593][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7689.544595][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7689.544598][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7689.544600][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7689.544601][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7689.544603][    C3] PKRU: 55555554
[ 7689.544604][    C3] Call Trace:
[ 7689.544606][    C3]  <NMI>
[ 7689.544608][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 7689.544613][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 7689.544617][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 7689.544622][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 7689.544626][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 7689.544628][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 7689.544633][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7689.544637][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7689.544640][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7689.544644][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7689.544646][    C3]  </NMI>
[ 7689.544647][    C3]  <TASK>
[ 7689.544649][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7689.544654][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7689.544657][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7689.544661][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7689.544665][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7689.544671][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7689.544673][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7689.544676][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7689.544679][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7689.544683][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7689.544686][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7689.544690][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7689.544693][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7689.544698][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7689.544700][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7689.544704][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7689.544708][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7689.544712][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7689.544715][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7689.544720][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7689.544726][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7689.544729][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7689.544732][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7689.544739][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7689.544746][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7689.544752][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7689.544756][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7689.544760][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7689.544764][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7689.544769][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7689.544776][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7689.544780][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7689.544783][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7689.544788][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7689.544791][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7689.544794][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7689.544799][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7689.544802][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7689.544805][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7689.544808][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7689.544811][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7689.544814][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7689.544818][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7689.544820][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7689.544825][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7689.544829][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7689.544832][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7689.544837][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7689.544840][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7689.544843][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7689.544847][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7689.544850][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7689.544852][ C3] kthread (kernel/kthread.c:388) 
[ 7689.544854][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7689.544857][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7689.544859][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7689.544861][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7716.564900][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7716.565393][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7716.565883][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7716.566371][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7716.567341][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7716.567973][    C3] Workqueue: netns cleanup_net
[ 7716.568227][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7716.568497][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 7716.569495][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 7716.569810][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 7716.570222][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7716.570630][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 7716.571038][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7716.571451][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 7716.571862][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7716.572321][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7716.572662][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7716.573074][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7716.573487][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7716.573900][    C3] PKRU: 55555554
[ 7716.574089][    C3] Call Trace:
[ 7716.574263][    C3]  <IRQ>
[ 7716.574417][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7716.574688][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7716.574939][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7716.575224][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7716.575503][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7716.575801][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7716.576074][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7716.576393][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7716.576663][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7716.576980][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7716.577283][    C3]  </IRQ>
[ 7716.577438][    C3]  <TASK>
[ 7716.577594][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7716.577919][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7716.578215][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7716.578456][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7716.578759][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7716.579015][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7716.579307][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7716.579629][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7716.579933][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7716.580190][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7716.580472][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7716.580768][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7716.581012][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7716.581261][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7716.581501][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7716.581738][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7716.581988][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7716.582298][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7716.582562][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7716.582905][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7716.583181][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7716.583481][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7716.583789][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7716.584085][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7716.584335][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7716.584593][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7716.584838][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7716.585163][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7716.585463][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7716.585788][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7716.586102][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7716.586360][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7716.586612][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7716.586865][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7716.587182][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7716.587429][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7716.587669][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7716.588001][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7716.588253][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7716.588602][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7716.588929][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7716.589221][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7716.589545][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7716.589792][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7716.590027][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7716.590320][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7716.590580][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7716.590826][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7716.591097][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7716.591360][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7716.591597][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7716.591882][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7716.592123][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7716.592373][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7716.592715][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7716.592984][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7716.593252][ C3] kthread (kernel/kthread.c:388) 
[ 7716.593469][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7716.593712][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7716.593949][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7716.594189][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7744.564897][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7744.565392][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7744.565884][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7744.566371][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7744.567347][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7744.567981][    C3] Workqueue: netns cleanup_net
[ 7744.568235][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7744.568505][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 7744.569508][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 7744.569826][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7744.570240][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7744.570652][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7744.571065][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7744.571481][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7744.571893][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7744.572356][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7744.572698][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7744.573111][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7744.573527][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7744.573943][    C3] PKRU: 55555554
[ 7744.574131][    C3] Call Trace:
[ 7744.574307][    C3]  <IRQ>
[ 7744.574461][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7744.574733][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7744.574986][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7744.575275][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7744.575557][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7744.575857][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7744.576131][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7744.576448][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7744.576720][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7744.577038][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7744.577344][    C3]  </IRQ>
[ 7744.577500][    C3]  <TASK>
[ 7744.577656][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7744.577983][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7744.578287][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7744.578531][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7744.578825][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7744.579148][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7744.579455][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7744.579715][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7744.579997][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7744.580292][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7744.580539][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7744.580790][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7744.581031][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7744.581271][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7744.581523][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7744.581831][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7744.582096][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7744.582441][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7744.582719][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7744.583018][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7744.583323][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7744.583627][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7744.583877][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7744.584137][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7744.584387][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7744.584714][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7744.585012][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7744.585338][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7744.585657][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7744.585914][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7744.586168][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7744.586421][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7744.586740][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7744.586990][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7744.587230][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7744.587563][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7744.587814][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7744.588169][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7744.588497][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7744.588793][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7744.589116][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7744.589366][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7744.589600][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7744.589897][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7744.590158][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7744.590403][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7744.590675][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7744.590935][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7744.591177][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7744.591459][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7744.591706][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7744.591955][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7744.592298][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7744.592568][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7744.592836][ C3] kthread (kernel/kthread.c:388) 
[ 7744.593051][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7744.593297][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7744.593532][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7744.593779][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7744.594036][    C3]  </TASK>
| [ 7766.770229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7766.770617][    C3] rcu: 3-....: (4233902 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=929518
| [ 7766.771196][    C3] rcu: (t=4239863 jiffies g=2723341 q=5646 ncpus=4)
[ 7766.772030][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7766.772662][    C3] Workqueue: netns cleanup_net
[ 7766.772917][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7766.773195][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 7766.774201][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 7766.774518][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 7766.774931][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7766.775340][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7766.775752][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7766.776162][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 7766.776572][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7766.777036][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7766.777378][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7766.777793][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7766.778205][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7766.778615][    C3] PKRU: 55555554
[ 7766.778802][    C3] Call Trace:
[ 7766.778979][    C3]  <IRQ>
[ 7766.779130][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 7766.779411][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 7766.779671][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 7766.779929][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 7766.780225][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 7766.780462][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 7766.780740][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 7766.781018][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 7766.781282][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 7766.781575][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7766.781825][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 7766.782148][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7766.782430][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7766.782726][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7766.783001][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7766.783314][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7766.783588][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7766.783907][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7766.784215][    C3]  </IRQ>
[ 7766.784368][    C3]  <TASK>
[ 7766.784523][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7766.784845][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7766.785152][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7766.785457][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7766.785701][ C3] kasan_report (mm/kasan/report.c:585) 
[ 7766.785933][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7766.786226][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7766.786548][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7766.786854][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7766.787111][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7766.787392][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7766.787684][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7766.787934][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7766.788183][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7766.788420][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7766.788660][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7766.788911][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7766.789216][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7766.789481][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7766.789824][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7766.790101][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7766.790398][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7766.790702][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7766.790999][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7766.791247][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7766.791506][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7766.791753][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7766.792077][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7766.792373][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7766.792697][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7766.793010][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7766.793265][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7766.793519][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7766.793770][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7766.794087][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7766.794335][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7766.794572][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7766.794903][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7766.795153][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7766.795504][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7766.795830][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7766.796123][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7766.796445][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7766.796692][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7766.796924][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7766.797217][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7766.797476][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7766.797720][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7766.797989][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7766.798250][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7766.798489][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7766.798771][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7766.799016][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7766.799262][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7766.799607][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7766.799874][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7766.800142][ C3] kthread (kernel/kthread.c:388) 
[ 7766.800357][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7766.800600][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7766.800831][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7766.801074][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7787.847244][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 4260645 jiffies s: 467069 root: 0x8/.
| [ 7787.847920][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7787.848298][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 7787.848579][    C3] NMI backtrace for cpu 3
[ 7787.848588][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7787.848591][    C3] Workqueue: netns cleanup_net
[ 7787.848598][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7787.848603][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 7787.848606][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 7787.848609][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 7787.848611][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7787.848612][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7787.848614][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7787.848615][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 7787.848617][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7787.848619][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7787.848623][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7787.848624][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7787.848625][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7787.848627][    C3] PKRU: 55555554
[ 7787.848628][    C3] Call Trace:
[ 7787.848631][    C3]  <NMI>
[ 7787.848634][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 7787.848640][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 7787.848644][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 7787.848649][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 7787.848654][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 7787.848657][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 7787.848660][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7787.848665][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7787.848669][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7787.848671][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7787.848675][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7787.848678][    C3]  </NMI>
[ 7787.848678][    C3]  <TASK>
[ 7787.848679][ C3] kasan_report (mm/kasan/report.c:585) 
[ 7787.848683][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7787.848688][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7787.848692][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7787.848695][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7787.848700][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7787.848705][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7787.848708][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7787.848711][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7787.848714][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7787.848719][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7787.848722][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7787.848726][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7787.848728][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7787.848734][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7787.848736][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7787.848740][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7787.848744][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7787.848748][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7787.848752][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7787.848758][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7787.848764][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7787.848768][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7787.848771][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7787.848779][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7787.848786][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7787.848791][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7787.848796][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7787.848800][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7787.848804][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7787.848809][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7787.848816][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7787.848821][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7787.848824][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7787.848829][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7787.848833][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7787.848837][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7787.848841][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7787.848844][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7787.848848][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7787.848851][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7787.848854][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7787.848857][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7787.848860][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7787.848862][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7787.848868][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7787.848872][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7787.848875][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7787.848880][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7787.848883][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7787.848886][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7787.848890][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7787.848893][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7787.848895][ C3] kthread (kernel/kthread.c:388) 
[ 7787.848898][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7787.848901][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7787.848904][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7787.848906][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7812.564907][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7812.565401][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7812.565892][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7812.566382][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7812.567356][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7812.567988][    C3] Workqueue: netns cleanup_net
[ 7812.568242][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 7812.568512][ C3] Code: ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 44 89 e0 5b 5d 41 5c <41> 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb e1 0f 1f 00 90 90 90
All code
========
   0:	ff 48 8d             	decl   -0x73(%rax)
   3:	7c 24                	jl     0x29
   5:	10 e8                	adc    %ch,%al
   7:	92                   	xchg   %eax,%edx
   8:	fa                   	cli
   9:	ff                   	(bad)
   a:	ff 0f                	decl   (%rdi)
   c:	b6 d3                	mov    $0xd3,%dh
   e:	48 89 ee             	mov    %rbp,%rsi
  11:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  16:	e8 02 fd ff ff       	call   0xfffffffffffffd1d
  1b:	ff 34 24             	push   (%rsp)
  1e:	9d                   	popf
  1f:	48 83 c4 70          	add    $0x70,%rsp
  23:	44 89 e0             	mov    %r12d,%eax
  26:	5b                   	pop    %rbx
  27:	5d                   	pop    %rbp
  28:	41 5c                	pop    %r12
  2a:*	41 5d                	pop    %r13		<-- trapping instruction
  2c:	41 5e                	pop    %r14
  2e:	41 5f                	pop    %r15
  30:	c3                   	ret
  31:	cc                   	int3
  32:	cc                   	int3
  33:	cc                   	int3
  34:	cc                   	int3
  35:	45 31 e4             	xor    %r12d,%r12d
  38:	eb e1                	jmp    0x1b
  3a:	0f 1f 00             	nopl   (%rax)
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	41 5d                	pop    %r13
   2:	41 5e                	pop    %r14
   4:	41 5f                	pop    %r15
   6:	c3                   	ret
   7:	cc                   	int3
   8:	cc                   	int3
   9:	cc                   	int3
   a:	cc                   	int3
   b:	45 31 e4             	xor    %r12d,%r12d
   e:	eb e1                	jmp    0xfffffffffffffff1
  10:	0f 1f 00             	nopl   (%rax)
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 7812.569510][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000282
[ 7812.569827][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7812.570237][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7812.570648][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7812.571058][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7812.571468][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 7812.571878][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7812.572338][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7812.572680][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7812.573092][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7812.573537][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7812.573945][    C3] PKRU: 55555554
[ 7812.574132][    C3] Call Trace:
[ 7812.574309][    C3]  <IRQ>
[ 7812.574461][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7812.574732][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7812.574984][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7812.575268][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7812.575550][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7812.575847][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7812.576120][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7812.576434][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7812.576703][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7812.577023][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7812.577325][    C3]  </IRQ>
[ 7812.577482][    C3]  <TASK>
[ 7812.577636][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7812.577959][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7812.578265][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7812.578567][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 7812.578805][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7812.579098][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7812.579420][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7812.579727][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7812.579984][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7812.580264][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7812.580555][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7812.580802][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7812.581052][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7812.581289][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7812.581530][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7812.581781][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7812.582086][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7812.582351][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7812.582693][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7812.582970][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7812.583289][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7812.583595][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7812.583890][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7812.584139][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7812.584399][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7812.584647][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7812.584974][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7812.585271][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7812.585594][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7812.585910][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7812.586167][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7812.586418][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7812.586670][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7812.586988][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7812.587238][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7812.587476][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7812.587808][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7812.588058][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7812.588411][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7812.588738][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7812.589032][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7812.589358][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7812.589604][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7812.589836][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7812.590138][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7812.590396][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7812.590641][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7812.590910][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7812.591169][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7812.591409][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7812.591690][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7812.591933][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7812.592180][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7812.592522][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7812.592789][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7812.593056][ C3] kthread (kernel/kthread.c:388) 
[ 7812.593290][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7812.593534][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7812.593767][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7812.594009][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7840.564903][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7840.565396][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7840.565887][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7840.566378][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7840.567352][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7840.567982][    C3] Workqueue: netns cleanup_net
[ 7840.568236][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7840.568572][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 7840.569572][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 7840.569889][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7840.570300][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7840.570710][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7840.571127][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7840.571537][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7840.571948][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7840.572407][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7840.572748][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7840.573182][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7840.573592][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7840.574002][    C3] PKRU: 55555554
[ 7840.574189][    C3] Call Trace:
[ 7840.574366][    C3]  <IRQ>
[ 7840.574517][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7840.574787][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7840.575039][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7840.575324][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7840.575605][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7840.575903][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7840.576175][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7840.576491][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7840.576761][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7840.577081][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7840.577383][    C3]  </IRQ>
[ 7840.577540][    C3]  <TASK>
[ 7840.577694][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7840.578019][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7840.578325][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 7840.578629][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7840.578950][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7840.579256][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7840.579512][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7840.579791][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7840.580084][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7840.580331][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7840.580580][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7840.580817][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7840.581056][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7840.581307][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7840.581614][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7840.581878][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7840.582221][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7840.582498][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7840.582795][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7840.583111][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7840.583408][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7840.583656][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7840.583914][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7840.584162][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7840.584488][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7840.584783][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7840.585107][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7840.585421][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7840.585677][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7840.585928][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7840.586179][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7840.586495][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7840.586744][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7840.586981][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7840.587313][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7840.587563][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7840.587916][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7840.588242][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7840.588536][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7840.588857][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7840.589107][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7840.589340][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7840.589633][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7840.589893][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7840.590137][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7840.590408][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7840.590670][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7840.590909][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7840.591189][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7840.591432][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7840.591678][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7840.592021][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7840.592288][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7840.592553][ C3] kthread (kernel/kthread.c:388) 
[ 7840.592767][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7840.593010][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7840.593268][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7840.593511][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7840.593766][    C3]  </TASK>
| [ 7844.805230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7844.805604][    C3] rcu: 3-....: (4311821 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=946110
| [ 7844.806185][    C3] rcu: (t=4317898 jiffies g=2723341 q=5646 ncpus=4)
[ 7844.807020][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7844.807649][    C3] Workqueue: netns cleanup_net
[ 7844.807905][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 7844.808176][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 7844.809172][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 7844.809489][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 7844.809900][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7844.810313][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7844.810724][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 7844.811134][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 7844.811544][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7844.812004][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7844.812349][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7844.812763][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7844.813207][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7844.813616][    C3] PKRU: 55555554
[ 7844.813802][    C3] Call Trace:
[ 7844.813978][    C3]  <IRQ>
[ 7844.814130][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 7844.814413][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 7844.814672][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 7844.814929][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 7844.815226][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 7844.815463][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 7844.815740][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 7844.816017][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 7844.816281][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 7844.816572][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7844.816823][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 7844.817143][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7844.817424][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7844.817724][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7844.817996][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7844.818312][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7844.818580][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7844.818897][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7844.819202][    C3]  </IRQ>
[ 7844.819357][    C3]  <TASK>
[ 7844.819512][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7844.819836][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7844.820132][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7844.820430][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 7844.820669][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7844.820967][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7844.821224][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7844.821512][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7844.821833][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7844.822138][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7844.822394][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7844.822675][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7844.822969][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7844.823237][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7844.823487][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7844.823722][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7844.823962][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7844.824213][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7844.824517][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7844.824781][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7844.825125][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7844.825402][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7844.825700][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7844.826005][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7844.826299][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7844.826550][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7844.826810][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7844.827057][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7844.827381][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7844.827677][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7844.828001][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7844.828316][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7844.828571][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7844.828820][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7844.829072][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7844.829390][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7844.829638][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7844.829875][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7844.830206][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7844.830458][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7844.830808][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7844.831134][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7844.831429][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7844.831751][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7844.831996][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7844.832231][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7844.832523][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7844.832790][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7844.833037][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7844.833326][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7844.833585][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7844.833824][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7844.834104][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7844.834347][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7844.834590][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7844.834935][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7844.835202][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7844.835468][ C3] kthread (kernel/kthread.c:388) 
[ 7844.835682][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7844.835924][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7844.836156][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7844.836397][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7872.564897][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7872.565395][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7872.565886][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7872.566374][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7872.567349][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7872.567981][    C3] Workqueue: netns cleanup_net
[ 7872.568234][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:137 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 7872.568530][ C3] Code: ed 48 8d 50 08 eb 09 48 83 c0 01 48 39 c2 74 2c 80 38 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 <49> 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff 5b b8 01 00
All code
========
   0:	ed                   	in     (%dx),%eax
   1:	48 8d 50 08          	lea    0x8(%rax),%rdx
   5:	eb 09                	jmp    0x10
   7:	48 83 c0 01          	add    $0x1,%rax
   b:	48 39 c2             	cmp    %rax,%rdx
   e:	74 2c                	je     0x3c
  10:	80 38 00             	cmpb   $0x0,(%rax)
  13:	74 f2                	je     0x7
  15:	48 89 c2             	mov    %rax,%rdx
  18:	b8 01 00 00 00       	mov    $0x1,%eax
  1d:	48 85 d2             	test   %rdx,%rdx
  20:	0f 84 4c ff ff ff    	je     0xffffffffffffff72
  26:	41 83 e2 07          	and    $0x7,%r10d
  2a:*	49 39 d1             	cmp    %rdx,%r9		<-- trapping instruction
  2d:	0f 85 34 ff ff ff    	jne    0xffffffffffffff67
  33:	45 3a 11             	cmp    (%r9),%r10b
  36:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff67
  3c:	5b                   	pop    %rbx
  3d:	b8                   	.byte 0xb8
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	49 39 d1             	cmp    %rdx,%r9
   3:	0f 85 34 ff ff ff    	jne    0xffffffffffffff3d
   9:	45 3a 11             	cmp    (%r9),%r10b
   c:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff3d
  12:	5b                   	pop    %rbx
  13:	b8                   	.byte 0xb8
  14:	01 00                	add    %eax,(%rax)
[ 7872.569529][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000206
[ 7872.569846][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 7872.570258][    C3] RDX: ffffed10045e5641 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7872.570668][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 7872.571080][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7872.571491][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7872.571900][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7872.572362][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7872.572704][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7872.573142][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7872.573551][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7872.573959][    C3] PKRU: 55555554
[ 7872.574146][    C3] Call Trace:
[ 7872.574323][    C3]  <IRQ>
[ 7872.574475][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7872.574744][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7872.574995][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7872.575279][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7872.575560][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7872.575855][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7872.576127][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7872.576442][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7872.576711][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7872.577029][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7872.577331][    C3]  </IRQ>
[ 7872.577487][    C3]  <TASK>
[ 7872.577641][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7872.577965][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7872.578262][ C3] ? kasan_check_range (mm/kasan/generic.c:137 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 7872.578525][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7872.578813][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7872.579135][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7872.579438][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7872.579694][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7872.579974][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7872.580267][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7872.580513][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7872.580761][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7872.580998][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7872.581237][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7872.581486][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7872.581790][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7872.582052][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7872.582396][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7872.582674][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7872.582977][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7872.583281][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7872.583573][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7872.583821][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7872.584081][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7872.584327][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7872.584650][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7872.584947][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7872.585269][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7872.585581][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7872.585835][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7872.586088][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7872.586340][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7872.586658][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7872.586905][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7872.587143][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7872.587475][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7872.587726][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7872.588075][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7872.588403][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7872.588697][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7872.589019][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7872.589264][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7872.589499][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7872.589790][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7872.590049][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7872.590295][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7872.590565][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7872.590826][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7872.591065][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7872.591348][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7872.591589][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7872.591834][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7872.592177][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7872.592444][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7872.592713][ C3] kthread (kernel/kthread.c:388) 
[ 7872.592928][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7872.593192][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7872.593426][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7872.593667][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7886.151246][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 4358949 jiffies s: 467069 root: 0x8/.
| [ 7886.151912][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7886.152289][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 7886.152571][    C3] NMI backtrace for cpu 3
[ 7886.152581][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7886.152584][    C3] Workqueue: netns cleanup_net
[ 7886.152591][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 7886.152597][ C3] Code: f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 44 89 e0 5b 5d <41> 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb e1 0f 1f 00 90
All code
========
   0:	f5                   	cmc
   1:	ff                   	(bad)
   2:	ff 48 8d             	decl   -0x73(%rax)
   5:	7c 24                	jl     0x2b
   7:	10 e8                	adc    %ch,%al
   9:	92                   	xchg   %eax,%edx
   a:	fa                   	cli
   b:	ff                   	(bad)
   c:	ff 0f                	decl   (%rdi)
   e:	b6 d3                	mov    $0xd3,%dh
  10:	48 89 ee             	mov    %rbp,%rsi
  13:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  18:	e8 02 fd ff ff       	call   0xfffffffffffffd1f
  1d:	ff 34 24             	push   (%rsp)
  20:	9d                   	popf
  21:	48 83 c4 70          	add    $0x70,%rsp
  25:	44 89 e0             	mov    %r12d,%eax
  28:	5b                   	pop    %rbx
  29:	5d                   	pop    %rbp
  2a:*	41 5c                	pop    %r12		<-- trapping instruction
  2c:	41 5d                	pop    %r13
  2e:	41 5e                	pop    %r14
  30:	41 5f                	pop    %r15
  32:	c3                   	ret
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	45 31 e4             	xor    %r12d,%r12d
  3a:	eb e1                	jmp    0x1d
  3c:	0f 1f 00             	nopl   (%rax)
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	41 5c                	pop    %r12
   2:	41 5d                	pop    %r13
   4:	41 5e                	pop    %r14
   6:	41 5f                	pop    %r15
   8:	c3                   	ret
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	45 31 e4             	xor    %r12d,%r12d
  10:	eb e1                	jmp    0xfffffffffffffff3
  12:	0f 1f 00             	nopl   (%rax)
  15:	90                   	nop
[ 7886.152600][    C3] RSP: 0018:ffffc9000051f488 EFLAGS: 00000286
[ 7886.152602][    C3] RAX: 0000000000000000 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 7886.152604][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7886.152605][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 7886.152607][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 7886.152609][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 7886.152611][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7886.152613][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7886.152617][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7886.152619][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7886.152621][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7886.152622][    C3] PKRU: 55555554
[ 7886.152623][    C3] Call Trace:
[ 7886.152626][    C3]  <NMI>
[ 7886.152629][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 7886.152634][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 7886.152638][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 7886.152643][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 7886.152648][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 7886.152650][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 7886.152654][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7886.152659][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7886.152662][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 7886.152666][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 7886.152669][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 7886.152671][    C3]  </NMI>
[ 7886.152672][    C3]  <TASK>
[ 7886.152674][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7886.152678][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7886.152682][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7886.152687][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7886.152691][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7886.152697][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7886.152699][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7886.152703][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7886.152705][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7886.152711][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7886.152714][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7886.152718][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7886.152720][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7886.152725][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7886.152728][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7886.152732][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7886.152736][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7886.152741][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7886.152744][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7886.152750][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7886.152755][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7886.152759][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7886.152762][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7886.152770][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7886.152777][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7886.152782][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7886.152787][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7886.152791][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7886.152795][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7886.152800][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7886.152807][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7886.152811][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7886.152815][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7886.152821][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7886.152824][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7886.152827][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7886.152832][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7886.152835][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7886.152838][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7886.152841][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7886.152844][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7886.152847][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7886.152851][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7886.152853][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7886.152858][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7886.152862][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7886.152865][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7886.152870][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7886.152880][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7886.152884][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7886.152889][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7886.152893][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7886.152896][ C3] kthread (kernel/kthread.c:388) 
[ 7886.152900][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7886.152904][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7886.152907][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7886.152909][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7912.564882][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7912.565370][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7912.565863][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7912.566349][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7912.567319][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7912.567949][    C3] Workqueue: netns cleanup_net
[ 7912.568201][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7912.568481][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 7912.569484][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 7912.569799][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 7912.570214][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7912.570625][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7912.571033][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7912.571444][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 7912.571856][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7912.572315][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7912.572656][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7912.573094][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7912.573507][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7912.573921][    C3] PKRU: 55555554
[ 7912.574108][    C3] Call Trace:
[ 7912.574283][    C3]  <IRQ>
[ 7912.574438][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7912.574710][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7912.574960][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7912.575246][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7912.575527][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7912.575824][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7912.576096][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7912.576409][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7912.576680][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7912.576998][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7912.577303][    C3]  </IRQ>
[ 7912.577456][    C3]  <TASK>
[ 7912.577613][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7912.577939][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7912.578243][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7912.578548][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 7912.578794][ C3] kasan_report (mm/kasan/report.c:585) 
[ 7912.579024][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7912.579318][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7912.579639][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7912.579945][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7912.580203][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7912.580483][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7912.580776][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7912.581021][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7912.581269][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7912.581508][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7912.581746][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7912.581997][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7912.582306][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7912.582570][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7912.582919][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7912.583199][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7912.583500][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7912.583802][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7912.584099][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7912.584346][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7912.584606][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7912.584852][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7912.585180][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7912.585476][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7912.585800][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7912.586115][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7912.586372][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7912.586624][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7912.586875][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7912.587191][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7912.587440][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7912.587679][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7912.588009][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7912.588259][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7912.588612][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7912.588938][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7912.589229][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7912.589551][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7912.589798][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7912.590029][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7912.590325][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7912.590584][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7912.590828][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7912.591097][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7912.591357][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7912.591595][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7912.591876][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7912.592119][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7912.592366][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7912.592708][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7912.592980][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7912.593248][ C3] kthread (kernel/kthread.c:388) 
[ 7912.593462][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7912.593706][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7912.593940][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7912.594181][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7912.594437][    C3]  </TASK>
| [ 7922.840229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7922.840611][    C3] rcu: 3-....: (4389740 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=962857
| [ 7922.841187][    C3] rcu: (t=4395933 jiffies g=2723341 q=5646 ncpus=4)
[ 7922.842020][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7922.842649][    C3] Workqueue: netns cleanup_net
[ 7922.842912][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7922.843182][ C3] 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
All code
========
   0:	90                   	nop
   1:	66 0f 1f 00          	nopw   (%rax)
   5:	41 57                	push   %r15
   7:	41 56                	push   %r14
   9:	41 55                	push   %r13
   b:	41 54                	push   %r12
   d:	55                   	push   %rbp
   e:	53                   	push   %rbx
   f:	48 83 ec 70          	sub    $0x70,%rsp
  13:	9c                   	pushf
  14:	8f 04 24             	pop    (%rsp)
  17:	0f 01 ca             	clac
  1a:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  21:	1f 00 
  23:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 b7 00 00 00    	jne    0xe9
  32:	48 89 fd             	mov    %rdi,%rbp
  35:	49 89 f6             	mov    %rsi,%r14
  38:	89 d3                	mov    %edx,%ebx
  3a:	49 89 cd             	mov    %rcx,%r13
  3d:	e8                   	.byte 0xe8
  3e:	0f                   	.byte 0xf
  3f:	f7                   	.byte 0xf7

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 b7 00 00 00    	jne    0xbf
   8:	48 89 fd             	mov    %rdi,%rbp
   b:	49 89 f6             	mov    %rsi,%r14
   e:	89 d3                	mov    %edx,%ebx
  10:	49 89 cd             	mov    %rcx,%r13
  13:	e8                   	.byte 0xe8
  14:	0f                   	.byte 0xf
  15:	f7                   	.byte 0xf7
[ 7922.844180][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 7922.844496][    C3] RAX: 0000000000000000 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 7922.844909][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7922.845319][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 7922.845730][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7922.846144][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 7922.846554][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7922.847012][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7922.847353][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7922.847763][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7922.848173][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7922.848583][    C3] PKRU: 55555554
[ 7922.848772][    C3] Call Trace:
[ 7922.848946][    C3]  <IRQ>
[ 7922.849102][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 7922.849383][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 7922.849644][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 7922.849901][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 7922.850195][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 7922.850433][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 7922.850710][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 7922.850987][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 7922.851251][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 7922.851544][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7922.851791][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 7922.852113][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7922.852393][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7922.852688][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7922.852978][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7922.853293][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7922.853562][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7922.853882][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7922.854186][    C3]  </IRQ>
[ 7922.854341][    C3]  <TASK>
[ 7922.854494][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7922.854819][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7922.855118][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7922.855357][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7922.855655][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 7922.855911][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7922.856200][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7922.856523][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7922.856827][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7922.857084][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7922.857366][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7922.857659][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7922.857906][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7922.858154][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7922.858391][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7922.858631][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7922.858880][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7922.859185][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7922.859450][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7922.859792][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7922.860070][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7922.860368][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7922.860673][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7922.860966][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7922.861216][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7922.861476][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7922.861723][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7922.862047][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7922.862345][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7922.862668][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7922.862994][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7922.863247][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7922.863500][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7922.863751][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7922.864067][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7922.864312][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7922.864550][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7922.864879][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7922.865129][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7922.865477][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7922.865801][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7922.866095][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7922.866414][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7922.866659][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7922.866893][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7922.867183][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7922.867442][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7922.867695][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7922.867963][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7922.868224][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7922.868463][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7922.868744][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7922.868989][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7922.869233][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7922.869580][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7922.869846][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7922.870113][ C3] kthread (kernel/kthread.c:388) 
[ 7922.870326][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7922.870566][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7922.870799][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7922.871040][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7948.564898][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7948.565389][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7948.565878][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7948.566366][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7948.567341][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7948.567972][    C3] Workqueue: netns cleanup_net
[ 7948.568226][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:87 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 7948.568527][ C3] Code: 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 a5 <80> 38 00 74 f2 e9 74 ff ff ff b8 01 00 00 00 c3 cc cc cc cc 48 29
All code
========
   0:	2c 48                	sub    $0x48,%al
   2:	89 c2                	mov    %eax,%edx
   4:	48 85 c0             	test   %rax,%rax
   7:	75 b0                	jne    0xffffffffffffffb9
   9:	48 89 da             	mov    %rbx,%rdx
   c:	4c 89 d8             	mov    %r11,%rax
   f:	4c 29 da             	sub    %r11,%rdx
  12:	e9 49 ff ff ff       	jmp    0xffffffffffffff60
  17:	48 85 d2             	test   %rdx,%rdx
  1a:	74 b3                	je     0xffffffffffffffcf
  1c:	48 01 ea             	add    %rbp,%rdx
  1f:	eb 09                	jmp    0x2a
  21:	48 83 c0 01          	add    $0x1,%rax
  25:	48 39 d0             	cmp    %rdx,%rax
  28:	74 a5                	je     0xffffffffffffffcf
  2a:*	80 38 00             	cmpb   $0x0,(%rax)		<-- trapping instruction
  2d:	74 f2                	je     0x21
  2f:	e9 74 ff ff ff       	jmp    0xffffffffffffffa8
  34:	b8 01 00 00 00       	mov    $0x1,%eax
  39:	c3                   	ret
  3a:	cc                   	int3
  3b:	cc                   	int3
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	48                   	rex.W
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	80 38 00             	cmpb   $0x0,(%rax)
   3:	74 f2                	je     0xfffffffffffffff7
   5:	e9 74 ff ff ff       	jmp    0xffffffffffffff7e
   a:	b8 01 00 00 00       	mov    $0x1,%eax
   f:	c3                   	ret
  10:	cc                   	int3
  11:	cc                   	int3
  12:	cc                   	int3
  13:	cc                   	int3
  14:	48                   	rex.W
  15:	29                   	.byte 0x29
[ 7948.569530][    C3] RSP: 0018:ffffc9000051f4b0 EFLAGS: 00000286
[ 7948.569848][    C3] RAX: ffffed10045e5641 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 7948.570257][    C3] RDX: ffffed10045e5642 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7948.570671][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 7948.571085][    C3] R10: ffff888022f2b20b R11: 205d313754202020 R12: 0000000000000003
[ 7948.571497][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 7948.571907][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7948.572370][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7948.572729][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7948.573142][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7948.573553][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7948.573964][    C3] PKRU: 55555554
[ 7948.574151][    C3] Call Trace:
[ 7948.574329][    C3]  <IRQ>
[ 7948.574480][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7948.574753][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7948.575005][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7948.575290][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7948.575574][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7948.575870][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7948.576145][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7948.576462][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7948.576732][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7948.577052][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7948.577359][    C3]  </IRQ>
[ 7948.577514][    C3]  <TASK>
[ 7948.577668][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7948.577993][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7948.578292][ C3] ? kasan_check_range (mm/kasan/generic.c:87 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 7948.578561][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7948.578850][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7948.579174][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7948.579479][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7948.579736][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7948.580017][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7948.580310][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7948.580555][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7948.580807][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7948.581044][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7948.581285][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7948.581536][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7948.581840][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7948.582104][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7948.582447][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7948.582734][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7948.583033][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7948.583340][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7948.583636][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7948.583887][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7948.584148][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7948.584398][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7948.584732][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7948.585029][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7948.585355][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7948.585672][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7948.585928][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7948.586179][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7948.586432][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7948.586753][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7948.587003][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7948.587241][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7948.587574][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7948.587826][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7948.588178][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7948.588505][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7948.588800][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7948.589123][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7948.589370][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7948.589605][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7948.589899][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7948.590158][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7948.590406][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7948.590677][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7948.590939][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7948.591179][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7948.591461][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7948.591707][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7948.591952][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7948.592298][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7948.592566][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7948.592840][ C3] kthread (kernel/kthread.c:388) 
[ 7948.593054][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7948.593296][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7948.593527][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7948.593769][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7976.564890][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 7976.565381][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 7976.565874][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 7976.566360][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 7976.567335][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7976.567964][    C3] Workqueue: netns cleanup_net
[ 7976.568218][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7976.568486][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 7976.569499][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 7976.569815][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 7976.570229][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7976.570642][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7976.571055][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 7976.571466][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 7976.571876][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7976.572337][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7976.572689][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7976.573103][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7976.573515][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7976.573927][    C3] PKRU: 55555554
[ 7976.574113][    C3] Call Trace:
[ 7976.574290][    C3]  <IRQ>
[ 7976.574444][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 7976.574715][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 7976.574966][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 7976.575253][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 7976.575536][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 7976.575833][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 7976.576106][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 7976.576422][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 7976.576691][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 7976.577012][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 7976.577319][    C3]  </IRQ>
[ 7976.577473][    C3]  <TASK>
[ 7976.577628][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 7976.577954][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7976.578260][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 7976.578502][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7976.578797][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7976.579120][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7976.579425][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7976.579682][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7976.579965][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7976.580259][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7976.580507][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7976.580756][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7976.580993][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7976.581235][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7976.581486][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7976.581792][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7976.582057][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7976.582400][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7976.582685][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7976.582985][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7976.583291][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7976.583587][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7976.583839][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7976.584099][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7976.584347][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7976.584673][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7976.584972][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7976.585298][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7976.585613][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7976.585869][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7976.586122][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7976.586376][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7976.586694][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7976.586942][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7976.587180][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7976.587515][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7976.587767][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7976.588117][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7976.588446][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7976.588742][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7976.589064][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7976.589310][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7976.589546][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7976.589838][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7976.590098][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7976.590345][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7976.590614][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7976.590876][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7976.591116][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7976.591398][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7976.591641][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7976.591885][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7976.592230][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7976.592504][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7976.592772][ C3] kthread (kernel/kthread.c:388) 
[ 7976.592986][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7976.593230][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7976.593463][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7976.593706][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7984.455242][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 4457253 jiffies s: 467069 root: 0x8/.
| [ 7984.455915][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7984.456294][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 7984.456574][    C3] NMI backtrace for cpu 3
[ 7984.456584][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 7984.456587][    C3] Workqueue: netns cleanup_net
[ 7984.456593][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 7984.456599][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 7984.456601][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 7984.456604][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 7984.456606][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 7984.456607][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 7984.456609][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 7984.456611][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 7984.456612][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 7984.456614][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7984.456618][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 7984.456620][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7984.456621][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7984.456623][    C3] PKRU: 55555554
[ 7984.456624][    C3] Call Trace:
[ 7984.456626][    C3]  <NMI>
[ 7984.456629][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 7984.456634][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 7984.456638][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 7984.456643][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 7984.456647][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 7984.456650][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 7984.456653][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7984.456658][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7984.456661][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 7984.456664][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 7984.456668][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 7984.456670][    C3]  </NMI>
[ 7984.456671][    C3]  <TASK>
[ 7984.456673][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7984.456676][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 7984.456680][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 7984.456684][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 7984.456688][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 7984.456692][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7984.456697][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7984.456700][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 7984.456703][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7984.456706][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7984.456712][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 7984.456715][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 7984.456719][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 7984.456721][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7984.456727][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 7984.456729][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7984.456733][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 7984.456737][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 7984.456741][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7984.456745][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 7984.456751][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 7984.456757][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 7984.456760][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 7984.456764][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 7984.456771][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 7984.456778][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 7984.456784][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 7984.456789][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 7984.456793][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 7984.456797][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 7984.456802][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 7984.456809][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 7984.456813][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 7984.456817][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 7984.456822][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 7984.456826][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 7984.456829][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 7984.456833][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 7984.456836][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 7984.456840][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 7984.456843][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 7984.456846][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 7984.456849][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 7984.456852][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 7984.456854][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 7984.456859][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 7984.456864][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 7984.456867][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 7984.456871][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 7984.456875][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 7984.456878][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 7984.456882][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7984.456884][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 7984.456887][ C3] kthread (kernel/kthread.c:388) 
[ 7984.456890][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7984.456892][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 7984.456895][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 7984.456897][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 7984.456905][    C3]  </TASK>
| [ 8000.875229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8000.875616][    C3] rcu: 3-....: (4467660 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=979847
| [ 8000.876194][    C3] rcu: (t=4473968 jiffies g=2723341 q=5646 ncpus=4)
[ 8000.877033][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8000.877666][    C3] Workqueue: netns cleanup_net
[ 8000.877920][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8000.878259][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8000.879263][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8000.879578][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8000.880000][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8000.880409][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8000.880818][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8000.881228][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8000.881640][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8000.882101][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8000.882449][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8000.882862][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8000.883272][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8000.883684][    C3] PKRU: 55555554
[ 8000.883870][    C3] Call Trace:
[ 8000.884044][    C3]  <IRQ>
[ 8000.884199][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 8000.884481][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 8000.884741][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 8000.884999][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 8000.885293][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 8000.885532][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 8000.885809][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 8000.886086][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 8000.886354][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 8000.886648][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8000.886896][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 8000.887218][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8000.887501][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8000.887798][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8000.888075][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8000.888391][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8000.888661][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8000.888981][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8000.889285][    C3]  </IRQ>
[ 8000.889442][    C3]  <TASK>
[ 8000.889595][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8000.889921][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8000.890226][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8000.890529][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8000.890852][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8000.891158][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8000.891415][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8000.891694][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8000.891987][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8000.892234][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8000.892488][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8000.892724][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8000.892964][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8000.893216][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8000.893521][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8000.893784][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8000.894131][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8000.894410][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8000.894708][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8000.895013][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8000.895309][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8000.895560][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8000.895819][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8000.896067][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8000.896393][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8000.896690][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8000.897016][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8000.897332][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8000.897588][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8000.897838][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8000.898089][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8000.898408][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8000.898656][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8000.898893][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8000.899225][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8000.899477][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8000.899828][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8000.900154][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8000.900449][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8000.900771][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8000.901016][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8000.901250][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8000.901544][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8000.901803][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8000.902048][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8000.902317][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8000.902582][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8000.902822][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8000.903103][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8000.903346][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8000.903592][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8000.903935][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8000.904203][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8000.904471][ C3] kthread (kernel/kthread.c:388) 
[ 8000.904685][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8000.904927][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8000.905158][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8000.905401][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8028.564904][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8028.565396][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8028.565893][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8028.566381][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8028.567360][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8028.567993][    C3] Workqueue: netns cleanup_net
[ 8028.568247][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:579) 
[ 8028.568514][ C3] Code: c3 cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   c:	00 
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	66 0f 1f 00          	nopw   (%rax)
  21:	41 57                	push   %r15
  23:	41 56                	push   %r14
  25:	41 55                	push   %r13
  27:	41 54                	push   %r12
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	48 83 ec 70          	sub    $0x70,%rsp
  2f:	9c                   	pushf
  30:	8f 04 24             	pop    (%rsp)
  33:	0f 01 ca             	clac
  36:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  3d:	1f 00 
  3f:	41                   	rex.B

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	48 83 ec 70          	sub    $0x70,%rsp
   5:	9c                   	pushf
   6:	8f 04 24             	pop    (%rsp)
   9:	0f 01 ca             	clac
   c:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  13:	1f 00 
  15:	41                   	rex.B
[ 8028.569517][    C3] RSP: 0018:ffffc9000051f4a0 EFLAGS: 00000246
[ 8028.569836][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8028.570250][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8028.570666][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8028.571081][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8028.571492][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8028.571905][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8028.572376][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8028.572720][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8028.573132][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8028.573543][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8028.573956][    C3] PKRU: 55555554
[ 8028.574142][    C3] Call Trace:
[ 8028.574319][    C3]  <IRQ>
[ 8028.574471][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8028.574742][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8028.574994][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8028.575283][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8028.575564][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8028.575861][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8028.576137][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8028.576455][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8028.576725][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8028.577045][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8028.577351][    C3]  </IRQ>
[ 8028.577505][    C3]  <TASK>
[ 8028.577661][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8028.577985][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8028.578293][ C3] ? kasan_report (mm/kasan/report.c:579) 
[ 8028.578528][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8028.578823][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8028.579145][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8028.579451][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8028.579707][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8028.579990][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8028.580284][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8028.580530][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8028.580780][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8028.581018][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8028.581258][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8028.581510][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8028.581815][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8028.582079][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8028.582429][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8028.582708][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8028.583011][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8028.583318][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8028.583613][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8028.583864][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8028.584125][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8028.584374][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8028.584699][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8028.584998][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8028.585324][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8028.585639][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8028.585895][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8028.586147][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8028.586401][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8028.586720][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8028.586969][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8028.587208][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8028.587540][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8028.587793][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8028.588143][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8028.588472][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8028.588769][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8028.589091][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8028.589337][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8028.589572][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8028.589865][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8028.590125][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8028.590372][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8028.590643][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8028.590904][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8028.591144][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8028.591427][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8028.591671][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8028.591917][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8028.592267][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8028.592536][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8028.592804][ C3] kthread (kernel/kthread.c:388) 
[ 8028.593018][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8028.593261][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8028.593494][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8028.593738][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8056.564889][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8056.565379][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8056.565869][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8056.566354][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8056.567324][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8056.567955][    C3] Workqueue: netns cleanup_net
[ 8056.568207][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8056.568542][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8056.569539][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8056.569854][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8056.570267][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8056.570676][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8056.571087][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8056.571496][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8056.571910][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8056.572374][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8056.572715][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8056.573128][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8056.573538][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8056.573950][    C3] PKRU: 55555554
[ 8056.574137][    C3] Call Trace:
[ 8056.574311][    C3]  <IRQ>
[ 8056.574465][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8056.574738][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8056.574988][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8056.575275][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8056.575556][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8056.575854][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8056.576127][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8056.576441][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8056.576712][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8056.577030][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8056.577337][    C3]  </IRQ>
[ 8056.577489][    C3]  <TASK>
[ 8056.577646][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8056.577972][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8056.578275][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8056.578582][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8056.578905][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8056.579209][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8056.579467][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8056.579749][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8056.580042][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8056.580290][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8056.580537][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8056.580777][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8056.581017][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8056.581268][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8056.581573][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8056.581837][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8056.582185][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8056.582463][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8056.582763][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8056.583068][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8056.583362][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8056.583613][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8056.583873][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8056.584119][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8056.584444][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8056.584744][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8056.585070][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8056.585384][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8056.585639][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8056.585891][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8056.586144][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8056.586463][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8056.586709][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8056.586949][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8056.587281][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8056.587533][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8056.587884][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8056.588210][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8056.588505][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8056.588825][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8056.589071][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8056.589308][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8056.589599][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8056.589859][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8056.590107][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8056.590376][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8056.590639][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8056.590877][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8056.591164][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8056.591406][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8056.591653][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8056.591996][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8056.592269][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8056.592537][ C3] kthread (kernel/kthread.c:388) 
[ 8056.592751][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8056.592992][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8056.593226][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8056.593470][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8056.593728][    C3]  </TASK>
| [ 8078.909230][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8078.909602][    C3] rcu: 3-....: (4545605 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=996253
| [ 8078.910177][    C3] rcu: (t=4552002 jiffies g=2723341 q=5646 ncpus=4)
[ 8078.911008][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8078.911638][    C3] Workqueue: netns cleanup_net
[ 8078.911892][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8078.912175][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 8078.913174][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 8078.913491][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 8078.913903][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8078.914312][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8078.914722][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8078.915135][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 8078.915546][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8078.916007][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8078.916349][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8078.916760][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8078.917173][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8078.917583][    C3] PKRU: 55555554
[ 8078.917771][    C3] Call Trace:
[ 8078.917945][    C3]  <IRQ>
[ 8078.918099][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 8078.918383][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 8078.918643][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 8078.918901][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 8078.919195][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 8078.919434][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 8078.919710][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 8078.919986][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 8078.920250][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 8078.920544][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8078.920793][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 8078.921112][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8078.921395][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8078.921690][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8078.921965][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8078.922280][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8078.922550][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8078.922868][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8078.923174][    C3]  </IRQ>
[ 8078.923328][    C3]  <TASK>
[ 8078.923482][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8078.923805][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8078.924111][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8078.924412][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8078.924659][ C3] kasan_report (mm/kasan/report.c:585) 
[ 8078.924890][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8078.925182][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8078.925503][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8078.925807][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8078.926061][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8078.926342][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8078.926633][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8078.926879][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8078.927127][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8078.927363][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8078.927603][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8078.927852][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8078.928155][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8078.928420][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8078.928761][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8078.929038][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8078.929334][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8078.929637][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8078.929930][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8078.930179][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8078.930439][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8078.930684][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8078.931007][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8078.931303][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8078.931626][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8078.931939][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8078.932198][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8078.932447][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8078.932699][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8078.933015][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8078.933262][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8078.933497][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8078.933828][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8078.934082][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8078.934429][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8078.934756][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8078.935049][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8078.935369][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8078.935613][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8078.935847][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8078.936138][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8078.936395][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8078.936642][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8078.936911][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8078.937172][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8078.937410][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8078.937693][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8078.937936][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8078.938181][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8078.938526][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8078.938796][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8078.939063][ C3] kthread (kernel/kthread.c:388) 
[ 8078.939278][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8078.939521][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8078.939753][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8078.939996][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8082.759242][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 4555557 jiffies s: 467069 root: 0x8/.
| [ 8082.759888][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8082.760264][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 8082.760544][    C3] NMI backtrace for cpu 3
[ 8082.760553][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8082.760555][    C3] Workqueue: netns cleanup_net
[ 8082.760561][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8082.760566][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 8082.760569][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 8082.760571][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 8082.760573][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8082.760575][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8082.760576][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8082.760578][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 8082.760579][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8082.760581][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8082.760585][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8082.760586][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8082.760587][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8082.760589][    C3] PKRU: 55555554
[ 8082.760590][    C3] Call Trace:
[ 8082.760592][    C3]  <NMI>
[ 8082.760594][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 8082.760600][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 8082.760605][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 8082.760609][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 8082.760614][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 8082.760616][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 8082.760620][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8082.760625][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8082.760629][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8082.760631][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8082.760635][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8082.760638][    C3]  </NMI>
[ 8082.760638][    C3]  <TASK>
[ 8082.760639][ C3] kasan_report (mm/kasan/report.c:585) 
[ 8082.760645][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8082.760648][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8082.760652][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8082.760657][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8082.760662][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8082.760664][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8082.760668][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8082.760670][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8082.760676][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8082.760679][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8082.760683][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8082.760685][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8082.760691][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8082.760693][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8082.760697][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8082.760701][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8082.760705][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8082.760709][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8082.760714][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8082.760720][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8082.760724][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8082.760727][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8082.760735][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8082.760742][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8082.760747][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8082.760752][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8082.760756][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8082.760760][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8082.760764][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8082.760772][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8082.760775][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8082.760779][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8082.760784][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8082.760787][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8082.760791][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8082.760795][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8082.760798][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8082.760802][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8082.760805][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8082.760808][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8082.760810][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8082.760814][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8082.760816][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8082.760821][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8082.760825][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8082.760828][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8082.760832][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8082.760836][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8082.760838][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8082.760842][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8082.760845][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8082.760848][ C3] kthread (kernel/kthread.c:388) 
[ 8082.760850][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8082.760853][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8082.760855][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8082.760857][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8108.564877][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8108.565370][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8108.565860][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8108.566346][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8108.567316][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8108.567949][    C3] Workqueue: netns cleanup_net
[ 8108.568202][ C3] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 8108.568491][ C3] Code: 48 c7 c7 b0 c2 9e a9 5b 5d 41 5c e9 9a b3 9b ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 af ef ff ff 66 66 2e 0f 1f
All code
========
   0:	48 c7 c7 b0 c2 9e a9 	mov    $0xffffffffa99ec2b0,%rdi
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	e9 9a b3 9b ff       	jmp    0xffffffffff9bb3aa
  10:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  17:	00 00 00 
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 af ef ff ff       	jmp    0xffffffffffffefea
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 af ef ff ff       	jmp    0xffffffffffffefc0
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 8108.569488][    C3] RSP: 0018:ffffc9000051f4c8 EFLAGS: 00000206
[ 8108.569804][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8108.570214][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8108.570622][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8108.571034][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8108.571444][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8108.571857][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8108.572316][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8108.572657][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8108.573072][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8108.573482][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8108.573890][    C3] PKRU: 55555554
[ 8108.574077][    C3] Call Trace:
[ 8108.574253][    C3]  <IRQ>
[ 8108.574404][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8108.574675][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8108.574928][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8108.575212][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8108.575494][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8108.575791][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8108.576063][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8108.576378][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8108.576649][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8108.576968][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8108.577269][    C3]  </IRQ>
[ 8108.577426][    C3]  <TASK>
[ 8108.577580][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8108.577904][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8108.578208][ C3] ? __pfx___kasan_check_read (mm/kasan/shadow.c:30) 
[ 8108.578496][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8108.578783][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8108.579107][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8108.579413][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8108.579669][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8108.579946][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8108.580239][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8108.580484][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8108.580733][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8108.580971][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8108.581207][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8108.581457][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8108.581762][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8108.582031][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8108.582375][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8108.582651][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8108.582949][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8108.583251][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8108.583548][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8108.583794][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8108.584053][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8108.584301][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8108.584625][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8108.584920][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8108.585244][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8108.585557][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8108.585813][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8108.586065][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8108.586316][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8108.586630][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8108.586878][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8108.587120][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8108.587450][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8108.587698][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8108.588049][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8108.588374][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8108.588666][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8108.588987][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8108.589235][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8108.589467][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8108.589762][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8108.590022][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8108.590266][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8108.590536][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8108.590796][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8108.591034][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8108.591315][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8108.591560][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8108.591812][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8108.592155][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8108.592424][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8108.592690][ C3] kthread (kernel/kthread.c:388) 
[ 8108.592905][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8108.593148][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8108.593384][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8108.593623][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8136.564887][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8136.565378][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8136.565868][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8136.566353][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8136.567321][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8136.567949][    C3] Workqueue: netns cleanup_net
[ 8136.568201][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8136.568477][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 8136.569470][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 8136.569786][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 8136.570194][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8136.570601][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8136.571010][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8136.571422][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 8136.571835][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8136.572293][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8136.572633][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8136.573043][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8136.573453][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8136.573862][    C3] PKRU: 55555554
[ 8136.574048][    C3] Call Trace:
[ 8136.574223][    C3]  <IRQ>
[ 8136.574375][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8136.574643][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8136.574894][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8136.575179][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8136.575457][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8136.575754][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8136.576026][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8136.576341][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8136.576611][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8136.576926][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8136.577228][    C3]  </IRQ>
[ 8136.577384][    C3]  <TASK>
[ 8136.577538][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8136.577861][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8136.578156][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8136.578454][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8136.578701][ C3] kasan_report (mm/kasan/report.c:585) 
[ 8136.578927][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8136.579225][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8136.579481][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8136.579772][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8136.580094][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8136.580396][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8136.580655][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8136.580933][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8136.581229][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8136.581473][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8136.581725][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8136.581963][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8136.582202][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8136.582450][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8136.582757][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8136.583018][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8136.583359][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8136.583633][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8136.583932][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8136.584236][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8136.584531][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8136.584780][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8136.585039][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8136.585282][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8136.585607][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8136.585905][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8136.586227][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8136.586539][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8136.586794][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8136.587046][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8136.587298][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8136.587614][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8136.587859][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8136.588098][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8136.588428][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8136.588678][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8136.589026][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8136.589351][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8136.589642][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8136.589962][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8136.590209][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8136.590443][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8136.590734][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8136.590992][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8136.591238][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8136.591506][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8136.591772][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8136.592007][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8136.592291][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8136.592530][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8136.592776][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8136.593117][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8136.593385][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8136.593651][ C3] kthread (kernel/kthread.c:388) 
[ 8136.593867][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8136.594107][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8136.594341][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8136.594583][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8136.594835][    C3]  </TASK>
| [ 8156.944229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8156.944599][    C3] rcu: 3-....: (4623524 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1012557
| [ 8156.945183][    C3] rcu: (t=4630037 jiffies g=2723341 q=5646 ncpus=4)
[ 8156.946013][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8156.946642][    C3] Workqueue: netns cleanup_net
[ 8156.946896][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8156.947231][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8156.948226][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8156.948541][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8156.948952][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8156.949362][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8156.949772][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8156.950183][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8156.950593][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8156.951051][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8156.951393][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8156.951807][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8156.952221][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8156.952631][    C3] PKRU: 55555554
[ 8156.952818][    C3] Call Trace:
[ 8156.952991][    C3]  <IRQ>
[ 8156.953144][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 8156.953424][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 8156.953685][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 8156.953944][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 8156.954237][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 8156.954476][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 8156.954753][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 8156.955030][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 8156.955295][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 8156.955592][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8156.955842][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 8156.956161][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8156.956444][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8156.956740][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8156.957012][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8156.957327][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8156.957597][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8156.957916][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8156.958221][    C3]  </IRQ>
[ 8156.958376][    C3]  <TASK>
[ 8156.958530][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8156.958853][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8156.959158][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8156.959461][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8156.959783][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8156.960090][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8156.960347][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8156.960626][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8156.960921][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8156.961165][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8156.961417][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8156.961659][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8156.961896][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8156.962147][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8156.962451][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8156.962716][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8156.963059][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8156.963335][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8156.963634][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8156.963937][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8156.964234][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8156.964483][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8156.964744][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8156.964992][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8156.965319][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8156.965616][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8156.965941][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8156.966256][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8156.966513][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8156.966765][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8156.967016][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8156.967333][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8156.967582][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8156.967822][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8156.968153][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8156.968401][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8156.968756][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8156.969084][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8156.969376][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8156.969698][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8156.969945][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8156.970178][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8156.970472][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8156.970732][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8156.970975][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8156.971247][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8156.971506][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8156.971752][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8156.972034][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8156.972278][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8156.972526][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8156.972868][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8156.973136][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8156.973403][ C3] kthread (kernel/kthread.c:388) 
[ 8156.973618][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8156.973860][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8156.974095][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8156.974335][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8181.063242][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 4653861 jiffies s: 467069 root: 0x8/.
| [ 8181.063901][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8181.064278][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 8181.064557][    C3] NMI backtrace for cpu 3
[ 8181.064567][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8181.064569][    C3] Workqueue: netns cleanup_net
[ 8181.064577][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:130) 
[ 8181.064582][ C3] Code: ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 <83> e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 0f 93 c0 c3 cc cc cc
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	ff 66 66             	jmp    *0x66(%rsi)
   5:	2e 0f 1f 84 00 00 00 	cs nopl 0x0(%rax,%rax,1)
   c:	00 00 
   e:	66 90                	xchg   %ax,%ax
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9e0
  27:	48 d1 e8             	shr    %rax
  2a:*	83 e0 01             	and    $0x1,%eax		<-- trapping instruction
  2d:	75 0d                	jne    0x3c
  2f:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9e0
  36:	a4 05 00 
  39:	0f 93 c0             	setae  %al
  3c:	c3                   	ret
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	83 e0 01             	and    $0x1,%eax
   3:	75 0d                	jne    0x12
   5:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9b6
   c:	a4 05 00 
   f:	0f 93 c0             	setae  %al
  12:	c3                   	ret
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 8181.064585][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 8181.064587][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 8181.064589][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8181.064591][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8181.064593][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8181.064594][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 8181.064596][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8181.064598][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8181.064601][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8181.064603][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8181.064605][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8181.064606][    C3] PKRU: 55555554
[ 8181.064607][    C3] Call Trace:
[ 8181.064610][    C3]  <NMI>
[ 8181.064612][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 8181.064618][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 8181.064622][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 8181.064627][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 8181.064632][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 8181.064634][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 8181.064637][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8181.064643][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8181.064646][ C3] ? report_enabled (mm/kasan/report.c:130) 
[ 8181.064649][ C3] ? report_enabled (mm/kasan/report.c:130) 
[ 8181.064652][ C3] ? report_enabled (mm/kasan/report.c:130) 
[ 8181.064655][    C3]  </NMI>
[ 8181.064656][    C3]  <TASK>
[ 8181.064657][ C3] kasan_report (mm/kasan/report.c:585) 
[ 8181.064663][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8181.064667][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8181.064671][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8181.064675][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8181.064680][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8181.064685][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8181.064688][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8181.064691][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8181.064694][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8181.064699][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8181.064702][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8181.064706][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8181.064709][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8181.064714][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8181.064717][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8181.064720][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8181.064724][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8181.064729][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8181.064732][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8181.064738][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8181.064744][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8181.064747][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8181.064750][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8181.064758][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8181.064765][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8181.064771][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8181.064776][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8181.064780][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8181.064783][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8181.064788][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8181.064795][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8181.064799][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8181.064803][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8181.064808][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8181.064812][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8181.064815][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8181.064820][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8181.064823][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8181.064826][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8181.064829][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8181.064833][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8181.064836][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8181.064839][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8181.064841][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8181.064846][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8181.064850][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8181.064854][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8181.064858][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8181.064861][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8181.064864][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8181.064868][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8181.064871][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8181.064873][ C3] kthread (kernel/kthread.c:388) 
[ 8181.064876][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8181.064879][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8181.064881][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8181.064883][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8208.564889][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8208.565381][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8208.565873][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8208.566359][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8208.567335][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8208.567969][    C3] Workqueue: netns cleanup_net
[ 8208.568222][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 8208.568492][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 8208.569494][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 8208.569810][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 8208.570225][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8208.570636][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8208.571046][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 8208.571462][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 8208.571876][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8208.572338][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8208.572681][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8208.573093][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8208.573507][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8208.573921][    C3] PKRU: 55555554
[ 8208.574109][    C3] Call Trace:
[ 8208.574284][    C3]  <IRQ>
[ 8208.574439][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8208.574709][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8208.574961][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8208.575248][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8208.575531][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8208.575830][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8208.576104][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8208.576419][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8208.576691][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8208.577010][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8208.577317][    C3]  </IRQ>
[ 8208.577472][    C3]  <TASK>
[ 8208.577629][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8208.577954][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8208.578254][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8208.578554][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 8208.578794][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8208.579096][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8208.579353][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8208.579644][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8208.579969][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8208.580276][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8208.580536][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8208.580820][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8208.581114][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8208.581366][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8208.581616][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8208.581854][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8208.582097][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8208.582349][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8208.582656][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8208.582922][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8208.583265][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8208.583546][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8208.583845][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8208.584152][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8208.584448][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8208.584699][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8208.584959][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8208.585208][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8208.585533][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8208.585834][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8208.586160][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8208.586475][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8208.586731][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8208.586984][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8208.587239][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8208.587558][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8208.587806][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8208.588046][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8208.588378][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8208.588632][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8208.588982][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8208.589311][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8208.589606][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8208.589927][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8208.590172][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8208.590409][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8208.590702][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8208.590962][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8208.591208][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8208.591483][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8208.591745][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8208.591984][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8208.592267][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8208.592509][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8208.592756][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8208.593100][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8208.593368][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8208.593637][ C3] kthread (kernel/kthread.c:388) 
[ 8208.593852][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8208.594093][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8208.594328][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8208.594570][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8208.594826][    C3]  </TASK>
| [ 8234.978229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8234.978603][    C3] rcu: 3-....: (4701473 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1028942
| [ 8234.979188][    C3] rcu: (t=4708071 jiffies g=2723341 q=5646 ncpus=4)
[ 8234.980019][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8234.980652][    C3] Workqueue: netns cleanup_net
[ 8234.980908][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 8234.981179][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 8234.982182][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 8234.982499][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 8234.982911][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8234.983323][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8234.983736][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 8234.984149][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 8234.984562][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8234.985024][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8234.985368][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8234.985782][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8234.986197][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8234.986608][    C3] PKRU: 55555554
[ 8234.986796][    C3] Call Trace:
[ 8234.986975][    C3]  <IRQ>
[ 8234.987128][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 8234.987410][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 8234.987671][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 8234.987929][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 8234.988225][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 8234.988464][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 8234.988741][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 8234.989021][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 8234.989285][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 8234.989580][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8234.989832][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 8234.990154][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8234.990437][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8234.990734][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8234.991009][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8234.991331][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8234.991600][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8234.991921][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8234.992227][    C3]  </IRQ>
[ 8234.992382][    C3]  <TASK>
[ 8234.992537][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8234.992860][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8234.993167][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8234.993474][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 8234.993715][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8234.994010][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8234.994333][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8234.994638][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8234.994896][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8234.995177][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8234.995473][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8234.995719][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8234.995969][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8234.996207][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8234.996447][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8234.996697][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8234.997004][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8234.997269][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8234.997615][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8234.997892][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8234.998194][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8234.998497][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8234.998796][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8234.999046][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8234.999307][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8234.999553][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8234.999880][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8235.000180][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8235.000503][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8235.000817][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8235.001073][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8235.001331][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8235.001586][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8235.001902][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8235.002153][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8235.002393][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8235.002726][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8235.002978][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8235.003331][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8235.003659][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8235.003953][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8235.004278][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8235.004525][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8235.004761][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8235.005055][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8235.005317][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8235.005565][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8235.005836][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8235.006096][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8235.006334][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8235.006617][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8235.006861][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8235.007109][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8235.007454][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8235.007721][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8235.007989][ C3] kthread (kernel/kthread.c:388) 
[ 8235.008204][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8235.008447][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8235.008683][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8235.008925][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8260.564891][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8260.565379][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8260.565871][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8260.566356][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8260.567328][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8260.567954][    C3] Workqueue: netns cleanup_net
[ 8260.568204][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8260.568473][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 8260.569471][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 8260.569786][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 8260.570198][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8260.570608][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 8260.571017][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8260.571431][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8260.571845][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8260.572304][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8260.572647][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8260.573059][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8260.573469][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8260.573881][    C3] PKRU: 55555554
[ 8260.574067][    C3] Call Trace:
[ 8260.574243][    C3]  <IRQ>
[ 8260.574395][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8260.574666][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8260.574915][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8260.575202][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8260.575483][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8260.575780][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8260.576053][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8260.576366][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8260.576636][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8260.576956][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8260.577261][    C3]  </IRQ>
[ 8260.577416][    C3]  <TASK>
[ 8260.577571][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8260.577895][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8260.578192][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8260.578434][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8260.578731][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8260.578988][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8260.579276][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8260.579600][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8260.579907][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8260.580164][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8260.580443][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8260.580735][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8260.580981][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8260.581236][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8260.581474][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8260.581713][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8260.581964][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8260.582270][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8260.582533][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8260.582877][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8260.583152][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8260.583452][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8260.583755][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8260.584052][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8260.584300][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8260.584560][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8260.584807][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8260.585133][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8260.585430][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8260.585756][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8260.586071][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8260.586328][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8260.586580][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8260.586831][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8260.587148][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8260.587396][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8260.587634][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8260.587965][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8260.588214][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8260.588566][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8260.588892][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8260.589184][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8260.589505][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8260.589754][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8260.589986][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8260.590281][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8260.590539][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8260.590783][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8260.591051][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8260.591316][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8260.591556][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8260.591837][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8260.592080][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8260.592328][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8260.592671][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8260.592939][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8260.593207][ C3] kthread (kernel/kthread.c:388) 
[ 8260.593421][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8260.593663][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8260.593896][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8260.594136][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8279.367243][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 4752165 jiffies s: 467069 root: 0x8/.
| [ 8279.367896][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8279.368268][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 8279.368548][    C3] NMI backtrace for cpu 3
[ 8279.368557][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8279.368559][    C3] Workqueue: netns cleanup_net
[ 8279.368566][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8279.368571][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 8279.368574][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 8279.368576][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8279.368578][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8279.368580][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8279.368581][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8279.368583][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8279.368584][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8279.368586][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8279.368590][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8279.368592][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8279.368593][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8279.368594][    C3] PKRU: 55555554
[ 8279.368595][    C3] Call Trace:
[ 8279.368598][    C3]  <NMI>
[ 8279.368601][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 8279.368606][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 8279.368611][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 8279.368615][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 8279.368620][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 8279.368622][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 8279.368627][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8279.368632][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8279.368635][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8279.368638][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8279.368641][    C3]  </NMI>
[ 8279.368642][    C3]  <TASK>
[ 8279.368646][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8279.368650][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8279.368654][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8279.368658][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8279.368663][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8279.368666][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8279.368670][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8279.368672][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8279.368677][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8279.368680][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8279.368684][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8279.368687][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8279.368692][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8279.368694][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8279.368698][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8279.368701][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8279.368706][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8279.368709][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8279.368715][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8279.368721][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8279.368725][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8279.368728][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8279.368735][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8279.368742][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8279.368748][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8279.368753][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8279.368757][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8279.368761][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8279.368765][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8279.368773][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8279.368777][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8279.368780][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8279.368786][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8279.368789][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8279.368792][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8279.368796][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8279.368799][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8279.368803][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8279.368806][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8279.368809][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8279.368812][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8279.368815][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8279.368817][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8279.368822][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8279.368826][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8279.368829][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8279.368834][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8279.368837][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8279.368840][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8279.368843][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8279.368847][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8279.368849][ C3] kthread (kernel/kthread.c:388) 
[ 8279.368852][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8279.368854][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8279.368857][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8279.368859][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8304.564888][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8304.565377][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8304.565869][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8304.566355][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8304.567326][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8304.567955][    C3] Workqueue: netns cleanup_net
[ 8304.568208][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8304.568477][ C3] 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
All code
========
   0:	90                   	nop
   1:	66 0f 1f 00          	nopw   (%rax)
   5:	41 57                	push   %r15
   7:	41 56                	push   %r14
   9:	41 55                	push   %r13
   b:	41 54                	push   %r12
   d:	55                   	push   %rbp
   e:	53                   	push   %rbx
   f:	48 83 ec 70          	sub    $0x70,%rsp
  13:	9c                   	pushf
  14:	8f 04 24             	pop    (%rsp)
  17:	0f 01 ca             	clac
  1a:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  21:	1f 00 
  23:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 b7 00 00 00    	jne    0xe9
  32:	48 89 fd             	mov    %rdi,%rbp
  35:	49 89 f6             	mov    %rsi,%r14
  38:	89 d3                	mov    %edx,%ebx
  3a:	49 89 cd             	mov    %rcx,%r13
  3d:	e8                   	.byte 0xe8
  3e:	0f                   	.byte 0xf
  3f:	f7                   	.byte 0xf7

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 b7 00 00 00    	jne    0xbf
   8:	48 89 fd             	mov    %rdi,%rbp
   b:	49 89 f6             	mov    %rsi,%r14
   e:	89 d3                	mov    %edx,%ebx
  10:	49 89 cd             	mov    %rcx,%r13
  13:	e8                   	.byte 0xe8
  14:	0f                   	.byte 0xf
  15:	f7                   	.byte 0xf7
[ 8304.569475][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 8304.569791][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8304.570201][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8304.570614][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8304.571028][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8304.571440][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 8304.571850][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8304.572309][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8304.572652][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8304.573065][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8304.573476][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8304.573885][    C3] PKRU: 55555554
[ 8304.574073][    C3] Call Trace:
[ 8304.574250][    C3]  <IRQ>
[ 8304.574404][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8304.574675][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8304.574925][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8304.575209][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8304.575491][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8304.575786][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8304.576058][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8304.576373][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8304.576643][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8304.576961][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8304.577264][    C3]  </IRQ>
[ 8304.577418][    C3]  <TASK>
[ 8304.577571][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8304.577895][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8304.578200][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8304.578440][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8304.578733][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8304.579055][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8304.579358][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8304.579615][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8304.579895][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8304.580188][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8304.580435][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8304.580682][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8304.580925][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8304.581164][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8304.581414][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8304.581718][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8304.581980][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8304.582324][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8304.582602][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8304.582900][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8304.583204][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8304.583498][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8304.583747][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8304.584006][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8304.584253][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8304.584577][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8304.584875][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8304.585199][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8304.585511][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8304.585766][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8304.586017][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8304.586270][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8304.586587][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8304.586833][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8304.587071][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8304.587402][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8304.587653][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8304.588002][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8304.588329][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8304.588623][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8304.588942][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8304.589187][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8304.589423][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8304.589714][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8304.589973][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8304.590219][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8304.590488][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8304.590747][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8304.590990][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8304.591273][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8304.591514][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8304.591759][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8304.592103][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8304.592370][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8304.592646][ C3] kthread (kernel/kthread.c:388) 
[ 8304.592859][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8304.593100][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8304.593334][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8304.593576][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8304.593830][    C3]  </TASK>
| [ 8313.013229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8313.013588][    C3] rcu: 3-....: (4779393 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1045280
| [ 8313.014175][    C3] rcu: (t=4786106 jiffies g=2723341 q=5646 ncpus=4)
[ 8313.015008][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8313.015641][    C3] Workqueue: netns cleanup_net
[ 8313.015895][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8313.016233][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8313.017227][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8313.017544][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8313.017955][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8313.018365][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8313.018777][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8313.019189][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8313.019599][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8313.020059][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8313.020402][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8313.020821][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8313.021232][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8313.021643][    C3] PKRU: 55555554
[ 8313.021830][    C3] Call Trace:
[ 8313.022005][    C3]  <IRQ>
[ 8313.022157][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 8313.022436][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 8313.022696][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 8313.022955][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 8313.023250][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 8313.023489][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 8313.023766][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 8313.024044][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 8313.024309][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 8313.024604][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8313.024854][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 8313.025175][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8313.025457][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8313.025752][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8313.026024][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8313.026341][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8313.026612][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8313.026930][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8313.027236][    C3]  </IRQ>
[ 8313.027391][    C3]  <TASK>
[ 8313.027545][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8313.027870][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8313.028176][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8313.028482][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8313.028803][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8313.029111][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8313.029368][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8313.029648][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8313.029943][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8313.030188][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8313.030438][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8313.030677][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8313.030918][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8313.031168][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8313.031475][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8313.031739][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8313.032081][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8313.032360][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8313.032659][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8313.032961][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8313.033258][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8313.033505][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8313.033763][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8313.034010][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8313.034334][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8313.034631][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8313.034953][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8313.035268][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8313.035524][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8313.035776][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8313.036027][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8313.036342][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8313.036592][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8313.036832][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8313.037163][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8313.037413][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8313.037764][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8313.038090][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8313.038382][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8313.038702][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8313.038950][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8313.039181][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8313.039477][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8313.039737][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8313.039983][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8313.040253][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8313.040514][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8313.040753][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8313.041039][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8313.041282][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8313.041530][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8313.041872][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8313.042141][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8313.042407][ C3] kthread (kernel/kthread.c:388) 
[ 8313.042621][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8313.042867][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8313.043101][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8313.043341][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8340.564880][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8340.565369][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8340.565860][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8340.566346][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8340.567319][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8340.567946][    C3] Workqueue: netns cleanup_net
[ 8340.568199][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8340.568476][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 8340.569473][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 8340.569788][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 8340.570199][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8340.570610][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8340.571026][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8340.571436][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 8340.571847][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8340.572306][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8340.572650][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8340.573062][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8340.573472][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8340.573884][    C3] PKRU: 55555554
[ 8340.574069][    C3] Call Trace:
[ 8340.574245][    C3]  <IRQ>
[ 8340.574397][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8340.574667][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8340.574917][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8340.575205][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8340.575484][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8340.575780][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8340.576055][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8340.576369][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8340.576638][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8340.576958][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8340.577263][    C3]  </IRQ>
[ 8340.577416][    C3]  <TASK>
[ 8340.577571][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8340.577895][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8340.578195][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8340.578491][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8340.578738][ C3] kasan_report (mm/kasan/report.c:585) 
[ 8340.578967][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8340.579265][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8340.579521][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8340.579809][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8340.580132][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8340.580437][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8340.580699][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8340.580978][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8340.581271][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8340.581518][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8340.581767][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8340.582005][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8340.582247][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8340.582497][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8340.582803][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8340.583066][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8340.583408][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8340.583684][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8340.583982][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8340.584285][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8340.584580][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8340.584827][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8340.585086][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8340.585333][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8340.585658][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8340.585953][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8340.586276][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8340.586591][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8340.586846][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8340.587097][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8340.587346][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8340.587663][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8340.587911][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8340.588148][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8340.588479][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8340.588728][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8340.589080][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8340.589406][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8340.589697][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8340.590017][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8340.590264][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8340.590495][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8340.590792][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8340.591050][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8340.591293][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8340.591561][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8340.591821][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8340.592060][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8340.592340][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8340.592583][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8340.592828][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8340.593178][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8340.593444][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8340.593710][ C3] kthread (kernel/kthread.c:388) 
[ 8340.593924][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8340.594166][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8340.594398][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8340.594639][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8368.564880][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8368.565369][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8368.565860][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8368.566343][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8368.567322][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8368.567955][    C3] Workqueue: netns cleanup_net
[ 8368.568207][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 8368.568479][ C3] Code: 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	41 57                	push   %r15
  1a:	41 56                	push   %r14
  1c:	41 55                	push   %r13
  1e:	41 54                	push   %r12
  20:	55                   	push   %rbp
  21:	53                   	push   %rbx
  22:	48 83 ec 70          	sub    $0x70,%rsp
  26:	9c                   	pushf
  27:	8f 04 24             	pop    (%rsp)
  2a:*	0f 01 ca             	clac		<-- trapping instruction
  2d:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  34:	1f 00 
  36:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3d:	85 c0                	test   %eax,%eax
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	0f 01 ca             	clac
   3:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   a:	1f 00 
   c:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  13:	85 c0                	test   %eax,%eax
  15:	0f                   	.byte 0xf
[ 8368.569472][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 8368.569787][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 8368.570196][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8368.570617][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 8368.571025][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8368.571436][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8368.571844][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8368.572302][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8368.572641][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8368.573051][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8368.573463][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8368.573871][    C3] PKRU: 55555554
[ 8368.574058][    C3] Call Trace:
[ 8368.574238][    C3]  <IRQ>
[ 8368.574391][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8368.574661][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8368.574912][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8368.575194][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8368.575476][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8368.575770][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8368.576042][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8368.576357][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8368.576625][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8368.576942][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8368.577245][    C3]  </IRQ>
[ 8368.577399][    C3]  <TASK>
[ 8368.577553][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8368.577877][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8368.578175][ C3] ? kasan_report (./arch/x86/include/asm/smap.h:46 mm/kasan/report.c:581) 
[ 8368.578412][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8368.578710][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 8368.578945][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8368.579202][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8368.579493][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8368.579812][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8368.580116][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8368.580373][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8368.580656][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8368.580952][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8368.581196][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8368.581445][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8368.581682][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8368.581920][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8368.582169][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8368.582477][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8368.582739][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8368.583082][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8368.583356][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8368.583657][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8368.583959][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8368.584256][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8368.584504][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8368.584763][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8368.585008][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8368.585333][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8368.585631][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8368.585952][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8368.586265][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8368.586521][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8368.586772][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8368.587024][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8368.587340][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8368.587586][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8368.587826][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8368.588157][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8368.588407][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8368.588757][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8368.589083][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8368.589375][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8368.589695][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8368.589941][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8368.590174][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8368.590465][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8368.590730][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8368.590976][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8368.591246][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8368.591506][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8368.591741][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8368.592023][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8368.592265][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8368.592511][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8368.592853][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8368.593120][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8368.593386][ C3] kthread (kernel/kthread.c:388) 
[ 8368.593600][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8368.593841][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8368.594075][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8368.594315][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8377.671243][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 4850469 jiffies s: 467069 root: 0x8/.
| [ 8377.671889][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8377.672269][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 8377.672559][    C3] NMI backtrace for cpu 3
[ 8377.672567][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8377.672570][    C3] Workqueue: netns cleanup_net
[ 8377.672575][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8377.672581][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 8377.672584][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 8377.672586][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 8377.672588][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8377.672590][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8377.672591][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8377.672593][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 8377.672595][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8377.672597][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8377.672600][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8377.672601][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8377.672603][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8377.672604][    C3] PKRU: 55555554
[ 8377.672605][    C3] Call Trace:
[ 8377.672609][    C3]  <NMI>
[ 8377.672611][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 8377.672616][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 8377.672621][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 8377.672625][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 8377.672630][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 8377.672632][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 8377.672635][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8377.672641][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8377.672644][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8377.672647][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8377.672650][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8377.672653][    C3]  </NMI>
[ 8377.672654][    C3]  <TASK>
[ 8377.672655][ C3] kasan_report (mm/kasan/report.c:585) 
[ 8377.672660][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8377.672665][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8377.672668][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8377.672672][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8377.672677][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8377.672682][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8377.672684][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8377.672688][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8377.672690][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8377.672695][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8377.672698][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8377.672703][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8377.672705][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8377.672710][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8377.672713][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8377.672716][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8377.672720][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8377.672725][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8377.672728][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8377.672733][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8377.672739][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8377.672743][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8377.672746][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8377.672753][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8377.672760][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8377.672766][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8377.672771][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8377.672775][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8377.672779][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8377.672783][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8377.672790][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8377.672794][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8377.672798][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8377.672803][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8377.672806][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8377.672809][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8377.672813][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8377.672816][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8377.672820][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8377.672823][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8377.672826][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8377.672829][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8377.672832][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8377.672834][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8377.672839][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8377.672843][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8377.672847][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8377.672851][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8377.672854][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8377.672857][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8377.672861][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8377.672864][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8377.672866][ C3] kthread (kernel/kthread.c:388) 
[ 8377.672869][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8377.672872][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8377.672874][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8377.672876][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8377.672884][    C3]  </TASK>
| [ 8391.047229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8391.047595][    C3] rcu: 3-....: (4857311 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1061584
| [ 8391.048179][    C3] rcu: (t=4864140 jiffies g=2723341 q=5646 ncpus=4)
[ 8391.049007][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8391.049637][    C3] Workqueue: netns cleanup_net
[ 8391.049892][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:579) 
[ 8391.050157][ C3] Code: e8 f5 fd ff ff 48 83 c4 68 5b 5d 41 5c c3 cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 0f 1f 00 41 57 41 56 41 55 41 54 55 53 48 83 ec 70 9c 8f 04 24
All code
========
   0:	e8 f5 fd ff ff       	call   0xfffffffffffffdfa
   5:	48 83 c4 68          	add    $0x68,%rsp
   9:	5b                   	pop    %rbx
   a:	5d                   	pop    %rbp
   b:	41 5c                	pop    %r12
   d:	c3                   	ret
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	cc                   	int3
  12:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  19:	00 
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	66 0f 1f 00          	nopw   (%rax)		<-- trapping instruction
  2e:	41 57                	push   %r15
  30:	41 56                	push   %r14
  32:	41 55                	push   %r13
  34:	41 54                	push   %r12
  36:	55                   	push   %rbp
  37:	53                   	push   %rbx
  38:	48 83 ec 70          	sub    $0x70,%rsp
  3c:	9c                   	pushf
  3d:	8f 04 24             	pop    (%rsp)

Code starting with the faulting instruction
===========================================
   0:	66 0f 1f 00          	nopw   (%rax)
   4:	41 57                	push   %r15
   6:	41 56                	push   %r14
   8:	41 55                	push   %r13
   a:	41 54                	push   %r12
   c:	55                   	push   %rbp
   d:	53                   	push   %rbx
   e:	48 83 ec 70          	sub    $0x70,%rsp
  12:	9c                   	pushf
  13:	8f 04 24             	pop    (%rsp)
[ 8391.051159][    C3] RSP: 0018:ffffc9000051f4a8 EFLAGS: 00000213
[ 8391.051476][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 8391.051886][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8391.052297][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 8391.052708][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8391.053119][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8391.053530][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8391.053988][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8391.054330][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8391.054742][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8391.055153][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8391.055562][    C3] PKRU: 55555554
[ 8391.055749][    C3] Call Trace:
[ 8391.055925][    C3]  <IRQ>
[ 8391.056076][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 8391.056356][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 8391.056615][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 8391.056874][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 8391.057166][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 8391.057404][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 8391.057682][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 8391.057959][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 8391.058223][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 8391.058520][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8391.058769][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 8391.059090][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8391.059372][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8391.059667][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8391.059941][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8391.060257][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8391.060530][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8391.060848][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8391.061154][    C3]  </IRQ>
[ 8391.061308][    C3]  <TASK>
[ 8391.061463][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8391.061785][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8391.062084][ C3] ? __pfx_kasan_report (mm/kasan/report.c:579) 
[ 8391.062348][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8391.062605][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8391.062893][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8391.063216][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8391.063523][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8391.063777][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8391.064059][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8391.064351][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8391.064599][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8391.064846][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8391.065082][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8391.065322][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8391.065573][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8391.065876][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8391.066139][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8391.066482][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8391.066759][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8391.067057][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8391.067362][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8391.067656][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8391.067906][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8391.068165][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8391.068413][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8391.068737][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8391.069034][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8391.069358][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8391.069672][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8391.069926][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8391.070177][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8391.070434][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8391.070752][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8391.070999][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8391.071236][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8391.071567][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8391.071818][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8391.072167][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8391.072495][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8391.072789][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8391.073109][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8391.073354][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8391.073588][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8391.073879][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8391.074138][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8391.074384][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8391.074653][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8391.074912][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8391.075153][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8391.075435][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8391.075677][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8391.075921][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8391.076264][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8391.076532][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8391.076799][ C3] kthread (kernel/kthread.c:388) 
[ 8391.077014][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8391.077255][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8391.077486][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8391.077729][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8416.564881][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8416.565371][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8416.565865][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8416.566351][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8416.567324][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8416.567951][    C3] Workqueue: netns cleanup_net
[ 8416.568204][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8416.568480][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 8416.569480][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 8416.569796][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 8416.570207][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8416.570623][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8416.571034][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8416.571444][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 8416.571855][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8416.572315][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8416.572659][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8416.573070][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8416.573479][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8416.573892][    C3] PKRU: 55555554
[ 8416.574079][    C3] Call Trace:
[ 8416.574255][    C3]  <IRQ>
[ 8416.574406][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8416.574676][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8416.574926][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8416.575215][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8416.575496][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8416.575790][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8416.576063][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8416.576375][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8416.576646][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8416.576964][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8416.577269][    C3]  </IRQ>
[ 8416.577421][    C3]  <TASK>
[ 8416.577576][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8416.577897][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8416.578204][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8416.578508][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8416.578752][ C3] kasan_report (mm/kasan/report.c:585) 
[ 8416.578984][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8416.579276][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8416.579599][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8416.579904][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8416.580162][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8416.580447][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8416.580738][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8416.580984][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8416.581236][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8416.581473][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8416.581710][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8416.581960][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8416.582267][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8416.582529][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8416.582872][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8416.583147][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8416.583446][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8416.583749][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8416.584044][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8416.584294][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8416.584552][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8416.584800][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8416.585125][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8416.585421][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8416.585744][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8416.586059][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8416.586315][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8416.586567][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8416.586815][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8416.587131][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8416.587379][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8416.587616][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8416.587946][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8416.588195][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8416.588546][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8416.588871][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8416.589163][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8416.589485][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8416.589730][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8416.589962][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8416.590256][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8416.590521][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8416.590764][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8416.591032][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8416.591292][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8416.591532][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8416.591813][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8416.592058][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8416.592304][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8416.592648][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8416.592916][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8416.593183][ C3] kthread (kernel/kthread.c:388) 
[ 8416.593396][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8416.593640][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8416.593872][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8416.594114][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8444.564893][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8444.565388][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8444.565876][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8444.566361][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8444.567332][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8444.567961][    C3] Workqueue: netns cleanup_net
[ 8444.568212][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 8444.568481][ C3] Code: 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d 48 83 c4 70 44 89 e0 5b <5d> 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 e4 eb e1 0f 1f 00
All code
========
   0:	7c f5                	jl     0xfffffffffffffff7
   2:	ff                   	(bad)
   3:	ff 48 8d             	decl   -0x73(%rax)
   6:	7c 24                	jl     0x2c
   8:	10 e8                	adc    %ch,%al
   a:	92                   	xchg   %eax,%edx
   b:	fa                   	cli
   c:	ff                   	(bad)
   d:	ff 0f                	decl   (%rdi)
   f:	b6 d3                	mov    $0xd3,%dh
  11:	48 89 ee             	mov    %rbp,%rsi
  14:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  19:	e8 02 fd ff ff       	call   0xfffffffffffffd20
  1e:	ff 34 24             	push   (%rsp)
  21:	9d                   	popf
  22:	48 83 c4 70          	add    $0x70,%rsp
  26:	44 89 e0             	mov    %r12d,%eax
  29:	5b                   	pop    %rbx
  2a:*	5d                   	pop    %rbp		<-- trapping instruction
  2b:	41 5c                	pop    %r12
  2d:	41 5d                	pop    %r13
  2f:	41 5e                	pop    %r14
  31:	41 5f                	pop    %r15
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	45 31 e4             	xor    %r12d,%r12d
  3b:	eb e1                	jmp    0x1e
  3d:	0f 1f 00             	nopl   (%rax)

Code starting with the faulting instruction
===========================================
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	41 5d                	pop    %r13
   5:	41 5e                	pop    %r14
   7:	41 5f                	pop    %r15
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	45 31 e4             	xor    %r12d,%r12d
  11:	eb e1                	jmp    0xfffffffffffffff4
  13:	0f 1f 00             	nopl   (%rax)
[ 8444.569472][    C3] RSP: 0018:ffffc9000051f480 EFLAGS: 00000286
[ 8444.569788][    C3] RAX: 0000000000000000 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 8444.570203][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8444.570611][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8444.571023][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 8444.571431][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 8444.571840][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8444.572298][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8444.572637][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8444.573052][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8444.573462][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8444.573871][    C3] PKRU: 55555554
[ 8444.574057][    C3] Call Trace:
[ 8444.574233][    C3]  <IRQ>
[ 8444.574385][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8444.574654][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8444.574904][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8444.575187][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8444.575467][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8444.575763][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8444.576035][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8444.576349][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8444.576617][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8444.576935][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8444.577237][    C3]  </IRQ>
[ 8444.577393][    C3]  <TASK>
[ 8444.577547][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8444.577869][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8444.578165][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8444.578463][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 8444.578702][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8444.578958][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8444.579247][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8444.579568][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8444.579870][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8444.580126][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8444.580410][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8444.580702][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8444.580948][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8444.581193][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8444.581430][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8444.581669][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8444.581918][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8444.582224][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8444.582486][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8444.582826][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8444.583102][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8444.583399][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8444.583703][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8444.583997][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8444.584246][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8444.584505][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8444.584750][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8444.585072][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8444.585370][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8444.585693][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8444.586004][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8444.586257][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8444.586509][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8444.586760][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8444.587076][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8444.587321][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8444.587559][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8444.587890][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8444.588140][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8444.588488][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8444.588815][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8444.589108][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8444.589426][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8444.589671][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8444.589904][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8444.590199][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8444.590457][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8444.590702][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8444.590969][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8444.591229][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8444.591466][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8444.591746][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8444.591986][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8444.592231][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8444.592571][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8444.592841][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8444.593107][ C3] kthread (kernel/kthread.c:388) 
[ 8444.593321][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8444.593561][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8444.593793][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8444.594034][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8444.594288][    C3]  </TASK>
| [ 8469.081229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8469.081600][    C3] rcu: 3-....: (4935254 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1077886
| [ 8469.082185][    C3] rcu: (t=4942174 jiffies g=2723341 q=5646 ncpus=4)
[ 8469.083014][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8469.083643][    C3] Workqueue: netns cleanup_net
[ 8469.083898][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8469.084175][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 8469.085172][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 8469.085488][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 8469.085899][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8469.086309][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8469.086721][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8469.087133][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 8469.087542][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8469.088002][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8469.088344][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8469.088758][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8469.089168][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8469.089576][    C3] PKRU: 55555554
[ 8469.089763][    C3] Call Trace:
[ 8469.089939][    C3]  <IRQ>
[ 8469.090454][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 8469.090735][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 8469.090995][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 8469.091253][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 8469.091550][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 8469.091787][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 8469.092063][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 8469.092342][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 8469.092606][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 8469.092898][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8469.093148][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 8469.093470][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8469.093748][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8469.094045][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8469.094319][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8469.094632][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8469.094902][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8469.095222][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8469.095528][    C3]  </IRQ>
[ 8469.095682][    C3]  <TASK>
[ 8469.095837][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8469.096158][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8469.096457][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8469.096755][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8469.097001][ C3] kasan_report (mm/kasan/report.c:585) 
[ 8469.097230][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8469.097526][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8469.097784][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8469.098072][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8469.098395][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8469.098701][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8469.098960][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8469.099238][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8469.099532][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8469.099777][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8469.100026][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8469.100269][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8469.100507][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8469.100757][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8469.101064][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8469.101327][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8469.101669][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8469.101944][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8469.102243][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8469.102545][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8469.102841][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8469.103089][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8469.103349][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8469.103597][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8469.103920][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8469.104217][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8469.104540][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8469.104854][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8469.105111][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8469.105364][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8469.105614][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8469.105929][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8469.106177][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8469.106415][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8469.106746][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8469.106994][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8469.107347][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8469.107673][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8469.107965][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8469.108287][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8469.108534][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8469.108765][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8469.109059][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8469.109318][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8469.109562][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8469.109833][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8469.110095][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8469.110335][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8469.110618][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8469.110862][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8469.111109][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8469.111452][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8469.111718][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8469.111985][ C3] kthread (kernel/kthread.c:388) 
[ 8469.112199][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8469.112442][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8469.112674][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8469.112914][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8475.975241][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 4948773 jiffies s: 467069 root: 0x8/.
| [ 8475.975888][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8475.976269][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 8475.976550][    C3] NMI backtrace for cpu 3
[ 8475.976558][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8475.976561][    C3] Workqueue: netns cleanup_net
[ 8475.976566][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8475.976570][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 8475.976573][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 8475.976575][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 8475.976577][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8475.976579][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8475.976580][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8475.976582][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 8475.976584][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8475.976586][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8475.976589][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8475.976590][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8475.976591][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8475.976593][    C3] PKRU: 55555554
[ 8475.976594][    C3] Call Trace:
[ 8475.976596][    C3]  <NMI>
[ 8475.976598][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 8475.976603][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 8475.976607][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 8475.976612][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 8475.976616][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 8475.976618][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 8475.976622][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8475.976627][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8475.976630][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8475.976633][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8475.976636][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8475.976639][    C3]  </NMI>
[ 8475.976640][    C3]  <TASK>
[ 8475.976641][ C3] kasan_report (mm/kasan/report.c:585) 
[ 8475.976646][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8475.976651][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8475.976655][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8475.976659][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8475.976663][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8475.976668][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8475.976670][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8475.976674][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8475.976676][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8475.976681][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8475.976684][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8475.976689][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8475.976691][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8475.976696][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8475.976699][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8475.976703][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8475.976706][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8475.976711][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8475.976714][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8475.976720][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8475.976726][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8475.976729][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8475.976732][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8475.976739][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8475.976747][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8475.976752][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8475.976757][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8475.976761][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8475.976765][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8475.976770][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8475.976777][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8475.976780][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8475.976784][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8475.976789][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8475.976792][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8475.976795][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8475.976799][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8475.976802][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8475.976806][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8475.976809][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8475.976812][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8475.976815][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8475.976818][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8475.976820][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8475.976824][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8475.976828][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8475.976831][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8475.976836][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8475.976839][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8475.976842][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8475.976845][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8475.976848][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8475.976851][ C3] kthread (kernel/kthread.c:388) 
[ 8475.976853][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8475.976856][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8475.976858][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8475.976860][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8500.564871][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8500.565357][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8500.565847][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8500.566330][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8500.567300][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8500.567939][    C3] Workqueue: netns cleanup_net
[ 8500.568194][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8500.568529][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8500.569526][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8500.569840][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8500.570258][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8500.570669][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8500.571078][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8500.571488][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8500.571898][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8500.572362][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8500.572704][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8500.573115][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8500.573526][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8500.573937][    C3] PKRU: 55555554
[ 8500.574123][    C3] Call Trace:
[ 8500.574298][    C3]  <IRQ>
[ 8500.574452][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8500.574722][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8500.574973][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8500.575259][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8500.575539][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8500.575835][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8500.576109][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8500.576422][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8500.576693][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8500.577011][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8500.577316][    C3]  </IRQ>
[ 8500.577469][    C3]  <TASK>
[ 8500.577627][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8500.577950][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8500.578254][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8500.578559][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8500.578881][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8500.579185][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8500.579443][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8500.579722][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8500.580023][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8500.580270][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8500.580515][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8500.580753][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8500.580994][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8500.581242][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8500.581549][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8500.581812][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8500.582155][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8500.582431][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8500.582731][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8500.583035][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8500.583331][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8500.583581][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8500.583841][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8500.584085][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8500.584409][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8500.584707][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8500.585029][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8500.585340][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8500.585596][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8500.585847][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8500.586100][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8500.586416][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8500.586661][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8500.586899][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8500.587230][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8500.587482][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8500.587830][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8500.588155][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8500.588448][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8500.588768][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8500.589014][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8500.589247][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8500.589538][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8500.589797][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8500.590047][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8500.590316][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8500.590576][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8500.590811][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8500.591095][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8500.591334][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8500.591581][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8500.591923][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8500.592191][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8500.592456][ C3] kthread (kernel/kthread.c:388) 
[ 8500.592672][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8500.592911][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8500.593145][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8500.593386][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8528.564881][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8528.565371][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8528.565860][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8528.566345][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8528.567314][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8528.567944][    C3] Workqueue: netns cleanup_net
[ 8528.568195][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8528.568464][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 8528.569461][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 8528.569780][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 8528.570190][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8528.570599][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 8528.571008][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8528.571419][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8528.571828][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8528.572286][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8528.572626][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8528.573036][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8528.573448][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8528.573857][    C3] PKRU: 55555554
[ 8528.574044][    C3] Call Trace:
[ 8528.574217][    C3]  <IRQ>
[ 8528.574371][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8528.574641][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8528.574891][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8528.575176][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8528.575455][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8528.575753][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8528.576026][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8528.576341][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8528.576610][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8528.576926][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8528.577228][    C3]  </IRQ>
[ 8528.577383][    C3]  <TASK>
[ 8528.577539][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8528.577864][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8528.578159][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8528.578401][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8528.578658][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8528.578945][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8528.579268][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8528.579573][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8528.579833][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8528.580113][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8528.580405][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8528.580650][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8528.580900][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8528.581135][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8528.581375][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8528.581625][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8528.581927][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8528.582191][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8528.582540][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8528.582816][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8528.583113][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8528.583418][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8528.583721][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8528.583970][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8528.584231][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8528.584478][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8528.584802][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8528.585097][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8528.585420][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8528.585734][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8528.585989][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8528.586238][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8528.586490][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8528.586809][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8528.587056][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8528.587292][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8528.587622][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8528.587873][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8528.588223][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8528.588546][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8528.588840][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8528.589161][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8528.589406][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8528.589639][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8528.589935][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8528.590193][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8528.590438][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8528.590706][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8528.590965][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8528.591204][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8528.591484][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8528.591726][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8528.591971][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8528.592314][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8528.592581][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8528.592847][ C3] kthread (kernel/kthread.c:388) 
[ 8528.593060][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8528.593301][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8528.593533][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8528.593773][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8528.594029][    C3]  </TASK>
| [ 8547.117229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8547.117601][    C3] rcu: 3-....: (5013174 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1094144
| [ 8547.118184][    C3] rcu: (t=5020210 jiffies g=2723341 q=5646 ncpus=4)
[ 8547.119025][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8547.119663][    C3] Workqueue: netns cleanup_net
[ 8547.119922][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8547.120191][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 8547.121184][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 8547.121500][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 8547.121909][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8547.122317][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 8547.122725][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8547.123136][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 8547.123544][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8547.124003][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8547.124343][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8547.124753][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8547.125163][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8547.125573][    C3] PKRU: 55555554
[ 8547.125760][    C3] Call Trace:
[ 8547.125936][    C3]  <IRQ>
[ 8547.126093][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 8547.126373][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 8547.126632][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 8547.126890][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 8547.127184][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 8547.127420][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 8547.127696][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 8547.127974][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 8547.128237][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 8547.128528][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8547.128777][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 8547.129098][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8547.129377][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8547.129677][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8547.129950][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8547.130262][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8547.130532][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8547.130847][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8547.131151][    C3]  </IRQ>
[ 8547.131305][    C3]  <TASK>
[ 8547.131460][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8547.131784][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8547.132081][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8547.132321][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8547.132618][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8547.132872][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8547.133160][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8547.133479][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8547.133784][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8547.134040][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8547.134317][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8547.134610][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8547.134855][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8547.135103][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8547.135342][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8547.135578][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8547.135826][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8547.136130][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8547.136393][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8547.136736][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8547.137011][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8547.137310][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8547.137611][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8547.137907][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8547.138153][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8547.138412][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8547.138659][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8547.138983][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8547.139277][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8547.139606][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8547.139926][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8547.140181][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8547.140433][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8547.140682][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8547.140997][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8547.141244][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8547.141484][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8547.141814][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8547.142063][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8547.142413][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8547.142738][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8547.143029][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8547.143349][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8547.143596][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8547.143826][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8547.144120][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8547.144378][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8547.144622][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8547.144890][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8547.145149][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8547.145386][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8547.145667][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8547.145909][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8547.146156][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8547.146498][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8547.146763][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8547.147028][ C3] kthread (kernel/kthread.c:388) 
[ 8547.147241][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8547.147483][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8547.147717][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8547.147955][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8572.564877][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8572.565368][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8572.565856][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8572.566341][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8572.567308][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8572.567938][    C3] Workqueue: netns cleanup_net
[ 8572.568189][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8572.568522][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8572.569515][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8572.569836][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8572.570246][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8572.570654][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8572.571063][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8572.571478][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8572.571887][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8572.572346][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8572.572686][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8572.573097][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8572.573508][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8572.573918][    C3] PKRU: 55555554
[ 8572.574105][    C3] Call Trace:
[ 8572.574279][    C3]  <IRQ>
[ 8572.574432][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8572.574703][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8572.574956][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8572.575240][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8572.575521][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8572.575819][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8572.576092][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8572.576406][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8572.576677][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8572.576993][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8572.577296][    C3]  </IRQ>
[ 8572.577452][    C3]  <TASK>
[ 8572.577606][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8572.577932][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8572.578234][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8572.578540][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8572.578863][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8572.579169][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8572.579425][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8572.579712][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8572.580005][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8572.580251][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8572.580499][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8572.580736][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8572.580977][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8572.581227][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8572.581532][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8572.581795][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8572.582138][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8572.582416][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8572.582714][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8572.583018][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8572.583312][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8572.583563][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8572.583822][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8572.584069][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8572.584394][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8572.584691][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8572.585015][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8572.585329][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8572.585583][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8572.585834][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8572.586087][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8572.586404][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8572.586651][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8572.586888][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8572.587219][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8572.587474][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8572.587823][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8572.588149][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8572.588445][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8572.588765][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8572.589010][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8572.589244][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8572.589541][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8572.589800][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8572.590048][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8572.590316][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8572.590577][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8572.590817][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8572.591099][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8572.591341][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8572.591586][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8572.591930][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8572.592197][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8572.592465][ C3] kthread (kernel/kthread.c:388) 
[ 8572.592680][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8572.592921][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8572.593156][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8572.593397][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8574.279241][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 5047077 jiffies s: 467069 root: 0x8/.
| [ 8574.279891][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8574.280266][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 8574.280543][    C3] NMI backtrace for cpu 3
[ 8574.280554][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8574.280556][    C3] Workqueue: netns cleanup_net
[ 8574.280561][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8574.280567][ C3] Code: 00 fc ff df 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 be 04 00 00 00 48 89 ef e8 d0 79 e9 fd 41 0f b6 45 00 41 38 c4 7c 08 <84> c0 0f 85 42 09 00 00 8b 5d 00 85 db 75 62 be 04 00 00 00 48 89
All code
========
   0:	00 fc                	add    %bh,%ah
   2:	ff                   	(bad)
   3:	df 49 c1             	fisttps -0x3f(%rcx)
   6:	ed                   	in     (%dx),%eax
   7:	03 41 83             	add    -0x7d(%rcx),%eax
   a:	e4 07                	in     $0x7,%al
   c:	49 01 c5             	add    %rax,%r13
   f:	41 83 c4 03          	add    $0x3,%r12d
  13:	be 04 00 00 00       	mov    $0x4,%esi
  18:	48 89 ef             	mov    %rbp,%rdi
  1b:	e8 d0 79 e9 fd       	call   0xfffffffffde979f0
  20:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  25:	41 38 c4             	cmp    %al,%r12b
  28:	7c 08                	jl     0x32
  2a:*	84 c0                	test   %al,%al		<-- trapping instruction
  2c:	0f 85 42 09 00 00    	jne    0x974
  32:	8b 5d 00             	mov    0x0(%rbp),%ebx
  35:	85 db                	test   %ebx,%ebx
  37:	75 62                	jne    0x9b
  39:	be 04 00 00 00       	mov    $0x4,%esi
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	84 c0                	test   %al,%al
   2:	0f 85 42 09 00 00    	jne    0x94a
   8:	8b 5d 00             	mov    0x0(%rbp),%ebx
   b:	85 db                	test   %ebx,%ebx
   d:	75 62                	jne    0x71
   f:	be 04 00 00 00       	mov    $0x4,%esi
  14:	48                   	rex.W
  15:	89                   	.byte 0x89
[ 8574.280570][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000213
[ 8574.280572][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 8574.280574][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8574.280575][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8574.280577][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8574.280578][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8574.280580][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8574.280582][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8574.280585][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8574.280586][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8574.280588][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8574.280589][    C3] PKRU: 55555554
[ 8574.280590][    C3] Call Trace:
[ 8574.280592][    C3]  <NMI>
[ 8574.280593][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 8574.280598][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 8574.280602][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 8574.280607][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 8574.280611][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 8574.280613][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 8574.280618][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8574.280621][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8574.280624][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8574.280628][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8574.280631][    C3]  </NMI>
[ 8574.280632][    C3]  <TASK>
[ 8574.280633][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8574.280637][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8574.280642][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8574.280646][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8574.280649][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8574.280652][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8574.280655][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8574.280659][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8574.280662][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8574.280666][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8574.280668][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8574.280673][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8574.280676][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8574.280680][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8574.280683][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8574.280688][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8574.280691][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8574.280696][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8574.280702][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8574.280705][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8574.280708][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8574.280715][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8574.280722][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8574.280727][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8574.280732][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8574.280736][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8574.280740][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8574.280744][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8574.280751][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8574.280755][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8574.280758][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8574.280763][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8574.280766][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8574.280769][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8574.280774][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8574.280777][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8574.280780][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8574.280783][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8574.280786][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8574.280789][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8574.280792][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8574.280795][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8574.280799][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8574.280803][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8574.280806][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8574.280811][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8574.280814][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8574.280817][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8574.280821][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8574.280824][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8574.280826][ C3] kthread (kernel/kthread.c:388) 
[ 8574.280828][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8574.280831][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8574.280833][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8574.280835][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8600.564863][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8600.565350][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8600.565840][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8600.566323][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8600.567288][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8600.567912][    C3] Workqueue: netns cleanup_net
[ 8600.568162][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8600.568495][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8600.569488][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8600.569803][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8600.570215][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8600.570623][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8600.571031][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8600.571439][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8600.571849][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8600.572307][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8600.572648][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8600.573058][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8600.573466][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8600.573878][    C3] PKRU: 55555554
[ 8600.574064][    C3] Call Trace:
[ 8600.574238][    C3]  <IRQ>
[ 8600.574390][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8600.574667][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8600.574915][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8600.575201][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8600.575480][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8600.575774][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8600.576047][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8600.576360][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8600.576628][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8600.576945][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8600.577249][    C3]  </IRQ>
[ 8600.577402][    C3]  <TASK>
[ 8600.577557][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8600.577881][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8600.578185][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8600.578490][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8600.578810][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8600.579114][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8600.579370][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8600.579654][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8600.579948][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8600.580193][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8600.580440][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8600.580678][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8600.580917][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8600.581166][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8600.581471][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8600.581735][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8600.582076][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8600.582352][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8600.582652][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8600.582954][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8600.583251][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8600.583501][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8600.583759][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8600.584006][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8600.584331][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8600.584630][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8600.584952][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8600.585264][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8600.585521][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8600.585773][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8600.586025][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8600.586341][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8600.586589][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8600.586828][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8600.587159][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8600.587410][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8600.587759][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8600.588084][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8600.588375][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8600.588697][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8600.588943][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8600.589177][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8600.589474][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8600.589735][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8600.589979][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8600.590249][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8600.590509][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8600.590745][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8600.591028][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8600.591270][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8600.591516][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8600.591858][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8600.592124][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8600.592392][ C3] kthread (kernel/kthread.c:388) 
[ 8600.592607][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8600.592847][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8600.593081][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8600.593321][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8600.593575][    C3]  </TASK>
| [ 8625.152236][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8625.152618][    C3] rcu: 3-....: (5091095 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1110539
| [ 8625.153200][    C3] rcu: (t=5098245 jiffies g=2723341 q=5646 ncpus=4)
[ 8625.154028][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8625.154656][    C3] Workqueue: netns cleanup_net
[ 8625.154910][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8625.155185][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 8625.156174][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 8625.156490][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 8625.156897][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8625.157305][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8625.157715][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8625.158123][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 8625.158533][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8625.158990][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8625.159336][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8625.159750][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8625.160157][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8625.160565][    C3] PKRU: 55555554
[ 8625.160751][    C3] Call Trace:
[ 8625.160927][    C3]  <IRQ>
[ 8625.161081][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 8625.161361][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 8625.161619][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 8625.161876][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 8625.162171][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 8625.162406][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 8625.162685][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 8625.162961][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 8625.163224][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 8625.163514][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8625.163763][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 8625.164083][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8625.164361][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8625.164658][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8625.164929][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8625.165241][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8625.165510][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8625.165825][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8625.166130][    C3]  </IRQ>
[ 8625.166283][    C3]  <TASK>
[ 8625.166440][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8625.166762][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8625.167065][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8625.167368][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8625.167614][ C3] kasan_report (mm/kasan/report.c:585) 
[ 8625.167839][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8625.168144][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8625.168436][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8625.168756][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8625.169061][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8625.169320][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8625.169600][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8625.169892][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8625.170137][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8625.170385][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8625.170620][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8625.170861][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8625.171111][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8625.171416][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8625.171679][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8625.172024][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8625.172300][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8625.172597][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8625.172901][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8625.173197][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8625.173446][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8625.173705][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8625.173952][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8625.174278][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8625.174573][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8625.174896][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8625.175209][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8625.175467][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8625.175718][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8625.175970][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8625.176285][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8625.176533][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8625.176772][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8625.177103][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8625.177352][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8625.177704][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8625.178031][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8625.178322][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8625.178643][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8625.178890][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8625.179121][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8625.179419][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8625.179678][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8625.179921][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8625.180190][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8625.180449][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8625.180688][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8625.180968][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8625.181212][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8625.181458][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8625.181800][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8625.182067][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8625.182333][ C3] kthread (kernel/kthread.c:388) 
[ 8625.182546][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8625.182789][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8625.183021][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8625.183262][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8652.564883][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8652.565374][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8652.565861][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8652.566346][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8652.567310][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8652.567938][    C3] Workqueue: netns cleanup_net
[ 8652.568190][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8652.568458][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 8652.569457][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 8652.569773][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 8652.570182][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8652.570590][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 8652.571001][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8652.571410][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 8652.571821][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8652.572280][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8652.572619][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8652.573032][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8652.573441][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8652.573852][    C3] PKRU: 55555554
[ 8652.574039][    C3] Call Trace:
[ 8652.574215][    C3]  <IRQ>
[ 8652.574366][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8652.574636][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8652.574886][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8652.575171][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8652.575450][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8652.575748][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8652.576019][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8652.576334][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8652.576603][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8652.576921][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8652.577223][    C3]  </IRQ>
[ 8652.577380][    C3]  <TASK>
[ 8652.577534][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8652.577859][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8652.578155][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8652.578397][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8652.578654][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8652.578942][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8652.579269][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8652.579574][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8652.579830][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8652.580109][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8652.580402][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8652.580647][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8652.580896][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8652.581132][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8652.581370][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8652.581621][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8652.581925][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8652.582187][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8652.582534][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8652.582810][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8652.583105][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8652.583409][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8652.583703][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8652.583951][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8652.584211][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8652.584458][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8652.584783][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8652.585078][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8652.585400][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8652.585714][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8652.585969][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8652.586219][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8652.586469][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8652.586786][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8652.587033][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8652.587270][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8652.587601][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8652.587849][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8652.588200][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8652.588524][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8652.588817][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8652.589137][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8652.589388][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8652.589619][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8652.589913][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8652.590170][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8652.590413][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8652.590683][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8652.590942][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8652.591181][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8652.591463][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8652.591706][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8652.591951][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8652.592293][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8652.592562][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8652.592828][ C3] kthread (kernel/kthread.c:388) 
[ 8652.593041][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8652.593284][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8652.593515][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8652.593758][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8672.583245][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 5145381 jiffies s: 467069 root: 0x8/.
| [ 8672.583906][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8672.584284][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 8672.584568][    C3] NMI backtrace for cpu 3
[ 8672.584577][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8672.584580][    C3] Workqueue: netns cleanup_net
[ 8672.584586][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8672.584592][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8672.584595][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8672.584597][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8672.584599][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8672.584601][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8672.584602][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8672.584604][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8672.584606][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8672.584608][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8672.584611][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8672.584613][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8672.584614][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8672.584616][    C3] PKRU: 55555554
[ 8672.584617][    C3] Call Trace:
[ 8672.584619][    C3]  <NMI>
[ 8672.584621][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 8672.584627][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 8672.584631][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 8672.584636][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 8672.584639][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 8672.584642][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 8672.584646][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8672.584650][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8672.584653][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8672.584656][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8672.584660][    C3]  </NMI>
[ 8672.584661][    C3]  <TASK>
[ 8672.584662][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8672.584666][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8672.584670][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8672.584676][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8672.584679][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8672.584682][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8672.584685][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8672.584690][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8672.584693][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8672.584697][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8672.584699][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8672.584704][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8672.584707][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8672.584711][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8672.584714][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8672.584719][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8672.584722][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8672.584728][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8672.584734][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8672.584737][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8672.584740][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8672.584748][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8672.584755][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8672.584760][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8672.584765][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8672.584769][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8672.584773][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8672.584778][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8672.584785][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8672.584789][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8672.584793][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8672.584798][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8672.584802][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8672.584805][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8672.584809][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8672.584812][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8672.584816][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8672.584819][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8672.584822][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8672.584825][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8672.584828][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8672.584831][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8672.584835][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8672.584839][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8672.584842][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8672.584847][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8672.584850][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8672.584853][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8672.584857][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8672.584860][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8672.584862][ C3] kthread (kernel/kthread.c:388) 
[ 8672.584865][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8672.584868][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8672.584870][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8672.584872][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8700.564881][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8700.565369][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8700.565856][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8700.566341][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8700.567305][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8700.567933][    C3] Workqueue: netns cleanup_net
[ 8700.568185][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8700.568518][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8700.569517][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8700.569833][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8700.570243][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8700.570651][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8700.571063][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8700.571472][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8700.571879][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8700.572339][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8700.572678][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8700.573092][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8700.573501][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8700.573910][    C3] PKRU: 55555554
[ 8700.574097][    C3] Call Trace:
[ 8700.574273][    C3]  <IRQ>
[ 8700.574425][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8700.574695][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8700.574945][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8700.575230][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8700.575511][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8700.575807][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8700.576079][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8700.576395][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8700.576664][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8700.576982][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8700.577284][    C3]  </IRQ>
[ 8700.577440][    C3]  <TASK>
[ 8700.577593][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8700.577917][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8700.578222][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8700.578524][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8700.578845][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8700.579156][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8700.579413][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8700.579692][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8700.579983][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8700.580229][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8700.580478][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8700.580714][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8700.580954][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8700.581204][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8700.581509][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8700.581771][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8700.582113][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8700.582390][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8700.582687][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8700.582991][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8700.583285][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8700.583533][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8700.583792][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8700.584039][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8700.584364][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8700.584659][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8700.584981][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8700.585295][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8700.585550][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8700.585800][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8700.586050][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8700.586365][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8700.586611][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8700.586848][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8700.587178][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8700.587427][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8700.587777][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8700.588101][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8700.588393][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8700.588712][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8700.588961][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8700.589193][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8700.589485][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8700.589741][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8700.589985][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8700.590253][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8700.590513][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8700.590752][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8700.591032][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8700.591274][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8700.591520][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8700.591861][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8700.592127][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8700.592394][ C3] kthread (kernel/kthread.c:388) 
[ 8700.592606][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8700.592847][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8700.593079][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8700.593320][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8700.593575][    C3]  </TASK>
| [ 8703.187229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8703.187584][    C3] rcu: 3-....: (5169016 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1126746
| [ 8703.188167][    C3] rcu: (t=5176280 jiffies g=2723341 q=5646 ncpus=4)
[ 8703.189001][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8703.189629][    C3] Workqueue: netns cleanup_net
[ 8703.189881][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:579) 
[ 8703.190145][ C3] Code: e8 f5 fd ff ff 48 83 c4 68 5b 5d 41 5c c3 cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 0f 1f 00 41 57 41 56 41 55 41 54 55 53 48 83 ec 70 9c 8f 04 24
All code
========
   0:	e8 f5 fd ff ff       	call   0xfffffffffffffdfa
   5:	48 83 c4 68          	add    $0x68,%rsp
   9:	5b                   	pop    %rbx
   a:	5d                   	pop    %rbp
   b:	41 5c                	pop    %r12
   d:	c3                   	ret
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	cc                   	int3
  12:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  19:	00 
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	66 0f 1f 00          	nopw   (%rax)		<-- trapping instruction
  2e:	41 57                	push   %r15
  30:	41 56                	push   %r14
  32:	41 55                	push   %r13
  34:	41 54                	push   %r12
  36:	55                   	push   %rbp
  37:	53                   	push   %rbx
  38:	48 83 ec 70          	sub    $0x70,%rsp
  3c:	9c                   	pushf
  3d:	8f 04 24             	pop    (%rsp)

Code starting with the faulting instruction
===========================================
   0:	66 0f 1f 00          	nopw   (%rax)
   4:	41 57                	push   %r15
   6:	41 56                	push   %r14
   8:	41 55                	push   %r13
   a:	41 54                	push   %r12
   c:	55                   	push   %rbp
   d:	53                   	push   %rbx
   e:	48 83 ec 70          	sub    $0x70,%rsp
  12:	9c                   	pushf
  13:	8f 04 24             	pop    (%rsp)
[ 8703.191140][    C3] RSP: 0018:ffffc9000051f4a8 EFLAGS: 00000213
[ 8703.191456][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 8703.191866][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8703.192274][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 8703.192685][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8703.193095][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8703.193503][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8703.193960][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8703.194300][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8703.194714][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8703.195122][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8703.195531][    C3] PKRU: 55555554
[ 8703.195717][    C3] Call Trace:
[ 8703.195893][    C3]  <IRQ>
[ 8703.196043][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 8703.196322][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 8703.196582][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 8703.196838][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 8703.197133][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 8703.197369][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 8703.197645][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 8703.197923][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 8703.198187][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 8703.198478][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8703.198728][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 8703.199055][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8703.199335][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8703.199630][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8703.199902][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8703.200215][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8703.200483][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8703.200801][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8703.201106][    C3]  </IRQ>
[ 8703.201259][    C3]  <TASK>
[ 8703.201415][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8703.201738][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8703.202036][ C3] ? __pfx_kasan_report (mm/kasan/report.c:579) 
[ 8703.202299][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8703.202555][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8703.202842][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8703.203162][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8703.203467][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8703.203721][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8703.204000][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8703.204292][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8703.204537][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8703.204786][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8703.205020][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8703.205259][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8703.205510][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8703.205812][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8703.206075][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8703.206417][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8703.206692][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8703.206987][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8703.207292][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8703.207584][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8703.207833][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8703.208091][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8703.208339][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8703.208663][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8703.208962][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8703.209292][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8703.209606][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8703.209861][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8703.210110][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8703.210360][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8703.210677][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8703.210924][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8703.211160][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8703.211491][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8703.211741][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8703.212091][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8703.212417][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8703.212708][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8703.213028][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8703.213273][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8703.213506][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8703.213797][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8703.214055][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8703.214299][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8703.214568][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8703.214826][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8703.215065][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8703.215345][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8703.215590][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8703.215834][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8703.216177][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8703.216444][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8703.216712][ C3] kthread (kernel/kthread.c:388) 
[ 8703.216923][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8703.217165][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8703.217395][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8703.217637][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8728.564876][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8728.565365][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8728.565857][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8728.566343][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8728.567314][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8728.567943][    C3] Workqueue: netns cleanup_net
[ 8728.568197][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8728.568465][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 8728.569469][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 8728.569787][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 8728.570199][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8728.570611][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 8728.571022][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8728.571433][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8728.571843][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8728.572305][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8728.572650][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8728.573063][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8728.573473][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8728.573885][    C3] PKRU: 55555554
[ 8728.574071][    C3] Call Trace:
[ 8728.574249][    C3]  <IRQ>
[ 8728.574400][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8728.574672][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8728.574923][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8728.575210][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8728.575492][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8728.575789][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8728.576062][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8728.576376][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8728.576647][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8728.576967][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8728.577272][    C3]  </IRQ>
[ 8728.577426][    C3]  <TASK>
[ 8728.577582][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8728.577906][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8728.578208][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8728.578449][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8728.578706][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8728.579003][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8728.579326][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8728.579631][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8728.579889][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8728.580169][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8728.580466][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8728.580711][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8728.580958][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8728.581198][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8728.581437][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8728.581686][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8728.581994][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8728.582258][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8728.582601][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8728.582878][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8728.583179][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8728.583483][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8728.583779][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8728.584029][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8728.584288][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8728.584534][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8728.584859][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8728.585159][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8728.585481][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8728.585795][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8728.586052][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8728.586305][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8728.586557][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8728.586874][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8728.587120][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8728.587363][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8728.587695][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8728.587945][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8728.588296][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8728.588623][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8728.588920][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8728.589244][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8728.589492][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8728.589727][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8728.590019][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8728.590279][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8728.590528][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8728.590797][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8728.591057][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8728.591293][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8728.591575][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8728.591816][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8728.592063][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8728.592405][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8728.592672][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8728.592938][ C3] kthread (kernel/kthread.c:388) 
[ 8728.593153][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8728.593393][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8728.593628][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8728.593868][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8756.564877][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8756.565366][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8756.565856][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8756.566355][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8756.567326][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8756.567955][    C3] Workqueue: netns cleanup_net
[ 8756.568209][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8756.568542][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8756.569546][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8756.569862][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8756.570273][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8756.570683][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8756.571095][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8756.571505][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8756.571915][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8756.572375][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8756.572716][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8756.573131][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8756.573542][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8756.573952][    C3] PKRU: 55555554
[ 8756.574139][    C3] Call Trace:
[ 8756.574315][    C3]  <IRQ>
[ 8756.574467][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8756.574737][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8756.574989][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8756.575275][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8756.575557][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8756.575853][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8756.576126][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8756.576442][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8756.576712][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8756.577030][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8756.577334][    C3]  </IRQ>
[ 8756.577489][    C3]  <TASK>
[ 8756.577643][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8756.577970][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8756.578275][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8756.578577][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8756.578903][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8756.579209][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8756.579468][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8756.579746][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8756.580038][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8756.580283][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8756.580531][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8756.580768][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8756.581006][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8756.581256][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8756.581562][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8756.581823][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8756.582167][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8756.582442][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8756.582740][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8756.583042][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8756.583337][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8756.583584][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8756.583845][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8756.584091][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8756.584419][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8756.584714][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8756.585037][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8756.585352][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8756.585608][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8756.585858][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8756.586107][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8756.586424][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8756.586672][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8756.586908][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8756.587238][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8756.587487][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8756.587838][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8756.588164][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8756.588455][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8756.588781][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8756.589027][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8756.589260][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8756.589553][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8756.589812][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8756.590054][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8756.590321][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8756.590580][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8756.590821][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8756.591102][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8756.591345][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8756.591590][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8756.591931][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8756.592198][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8756.592465][ C3] kthread (kernel/kthread.c:388) 
[ 8756.592677][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8756.592919][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8756.593150][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8756.593390][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8770.887241][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 5243685 jiffies s: 467069 root: 0x8/.
| [ 8770.887891][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8770.888269][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 8770.888547][    C3] NMI backtrace for cpu 3
[ 8770.888560][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8770.888563][    C3] Workqueue: netns cleanup_net
[ 8770.888569][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8770.888574][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 8770.888577][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 8770.888579][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 8770.888581][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8770.888583][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 8770.888584][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8770.888585][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 8770.888587][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8770.888593][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8770.888596][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8770.888597][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8770.888599][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8770.888600][    C3] PKRU: 55555554
[ 8770.888601][    C3] Call Trace:
[ 8770.888604][    C3]  <NMI>
[ 8770.888606][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 8770.888611][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 8770.888616][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 8770.888621][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 8770.888625][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 8770.888627][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 8770.888632][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8770.888637][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8770.888640][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8770.888643][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 8770.888646][    C3]  </NMI>
[ 8770.888647][    C3]  <TASK>
[ 8770.888651][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8770.888655][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8770.888659][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8770.888663][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8770.888667][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8770.888672][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8770.888675][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8770.888678][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8770.888681][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8770.888686][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8770.888689][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8770.888693][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8770.888695][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8770.888700][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8770.888703][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8770.888707][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8770.888710][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8770.888715][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8770.888718][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8770.888724][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8770.888729][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8770.888733][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8770.888737][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8770.888743][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8770.888750][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8770.888756][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8770.888761][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8770.888765][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8770.888769][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8770.888774][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8770.888782][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8770.888786][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8770.888789][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8770.888795][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8770.888798][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8770.888801][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8770.888805][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8770.888808][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8770.888812][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8770.888815][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8770.888818][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8770.888821][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8770.888824][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8770.888826][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8770.888831][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8770.888835][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8770.888838][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8770.888842][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8770.888846][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8770.888848][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8770.888852][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8770.888855][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8770.888858][ C3] kthread (kernel/kthread.c:388) 
[ 8770.888860][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8770.888863][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8770.888865][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8770.888867][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8770.888875][    C3]  </TASK>
| [ 8781.221229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8781.221602][    C3] rcu: 3-....: (5246936 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1143038
| [ 8781.222196][    C3] rcu: (t=5254314 jiffies g=2723341 q=5646 ncpus=4)
[ 8781.223025][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8781.223657][    C3] Workqueue: netns cleanup_net
[ 8781.223912][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/smap.h:56 mm/kasan/report.c:606) 
[ 8781.224182][ C3] Code: 24 20 88 5c 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff <ff> 34 24 9d 48 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3
All code
========
   0:	24 20                	and    $0x20,%al
   2:	88 5c 24 28          	mov    %bl,0x28(%rsp)
   6:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   b:	e8 7c f5 ff ff       	call   0xfffffffffffff58c
  10:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  15:	e8 92 fa ff ff       	call   0xfffffffffffffaac
  1a:	0f b6 d3             	movzbl %bl,%edx
  1d:	48 89 ee             	mov    %rbp,%rsi
  20:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  25:	e8 02 fd ff ff       	call   0xfffffffffffffd2c
  2a:*	ff 34 24             	push   (%rsp)		<-- trapping instruction
  2d:	9d                   	popf
  2e:	48 83 c4 70          	add    $0x70,%rsp
  32:	44 89 e0             	mov    %r12d,%eax
  35:	5b                   	pop    %rbx
  36:	5d                   	pop    %rbp
  37:	41 5c                	pop    %r12
  39:	41 5d                	pop    %r13
  3b:	41 5e                	pop    %r14
  3d:	41 5f                	pop    %r15
  3f:	c3                   	ret

Code starting with the faulting instruction
===========================================
   0:	ff 34 24             	push   (%rsp)
   3:	9d                   	popf
   4:	48 83 c4 70          	add    $0x70,%rsp
   8:	44 89 e0             	mov    %r12d,%eax
   b:	5b                   	pop    %rbx
   c:	5d                   	pop    %rbp
   d:	41 5c                	pop    %r12
   f:	41 5d                	pop    %r13
  11:	41 5e                	pop    %r14
  13:	41 5f                	pop    %r15
  15:	c3                   	ret
[ 8781.225181][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000246
[ 8781.225496][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 8781.225907][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8781.226316][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8781.226726][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 8781.227138][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 8781.227549][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8781.228008][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8781.228351][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8781.228768][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8781.229179][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8781.229590][    C3] PKRU: 55555554
[ 8781.229777][    C3] Call Trace:
[ 8781.229951][    C3]  <IRQ>
[ 8781.230105][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 8781.230387][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 8781.230647][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 8781.230906][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 8781.231199][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 8781.231438][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 8781.231717][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 8781.231995][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 8781.232258][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 8781.232553][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8781.232803][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 8781.233123][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8781.233406][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8781.233702][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8781.233974][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8781.234290][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8781.234559][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8781.234879][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8781.235183][    C3]  </IRQ>
[ 8781.235340][    C3]  <TASK>
[ 8781.235493][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8781.235816][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8781.236116][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8781.236412][ C3] ? kasan_report (./arch/x86/include/asm/smap.h:56 mm/kasan/report.c:606) 
[ 8781.236651][ C3] ? kasan_report (mm/kasan/report.c:585) 
[ 8781.236887][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8781.237193][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8781.237451][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8781.237739][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8781.238061][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8781.238367][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8781.238630][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8781.238911][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8781.239202][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8781.239451][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8781.239698][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8781.239936][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8781.240175][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8781.240426][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8781.240729][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8781.240993][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8781.241335][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8781.241613][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8781.241914][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8781.242219][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8781.242514][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8781.242763][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8781.243022][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8781.243270][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8781.243596][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8781.243892][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8781.244215][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8781.244528][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8781.244784][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8781.245033][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8781.245285][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8781.245602][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8781.245850][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8781.246091][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8781.246422][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8781.246671][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8781.247022][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8781.247350][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8781.247643][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8781.247965][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8781.248211][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8781.248444][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8781.248741][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8781.248999][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8781.249244][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8781.249514][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8781.249774][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8781.250013][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8781.250293][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8781.250536][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8781.250782][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8781.251127][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8781.251394][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8781.251661][ C3] kthread (kernel/kthread.c:388) 
[ 8781.251874][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8781.252116][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8781.252348][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8781.252589][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8808.564878][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8808.565366][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8808.565859][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8808.566343][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8808.567317][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8808.567947][    C3] Workqueue: netns cleanup_net
[ 8808.568199][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8808.568536][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8808.569529][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8808.569842][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8808.570253][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8808.570662][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8808.571070][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8808.571476][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8808.571886][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8808.572344][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8808.572686][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8808.573097][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8808.573505][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8808.573915][    C3] PKRU: 55555554
[ 8808.574100][    C3] Call Trace:
[ 8808.574275][    C3]  <IRQ>
[ 8808.574427][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8808.574697][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8808.574946][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8808.575233][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8808.575512][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8808.575806][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8808.576079][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8808.576391][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8808.576660][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8808.576978][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8808.577281][    C3]  </IRQ>
[ 8808.577434][    C3]  <TASK>
[ 8808.577589][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8808.577911][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8808.578215][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8808.578524][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8808.578844][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8808.579148][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8808.579404][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8808.579683][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8808.579978][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8808.580221][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8808.580468][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8808.580706][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8808.580943][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8808.581192][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8808.581498][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8808.581760][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8808.582103][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8808.582380][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8808.582678][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8808.582985][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8808.583281][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8808.583529][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8808.583787][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8808.584032][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8808.584354][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8808.584651][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8808.584972][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8808.585284][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8808.585539][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8808.585789][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8808.586041][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8808.586356][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8808.586602][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8808.586842][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8808.587173][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8808.587424][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8808.587772][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8808.588098][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8808.588391][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8808.588717][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8808.588962][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8808.589197][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8808.589489][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8808.589748][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8808.589994][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8808.590263][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8808.590523][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8808.590759][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8808.591043][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8808.591283][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8808.591530][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8808.591871][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8808.592136][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8808.592402][ C3] kthread (kernel/kthread.c:388) 
[ 8808.592618][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8808.592857][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8808.593093][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8808.593332][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8836.564878][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8836.565367][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8836.565857][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8836.566345][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8836.567316][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8836.567944][    C3] Workqueue: netns cleanup_net
[ 8836.568197][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/smap.h:56 mm/kasan/report.c:606) 
[ 8836.568468][ C3] Code: 24 20 88 5c 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff <ff> 34 24 9d 48 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3
All code
========
   0:	24 20                	and    $0x20,%al
   2:	88 5c 24 28          	mov    %bl,0x28(%rsp)
   6:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   b:	e8 7c f5 ff ff       	call   0xfffffffffffff58c
  10:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  15:	e8 92 fa ff ff       	call   0xfffffffffffffaac
  1a:	0f b6 d3             	movzbl %bl,%edx
  1d:	48 89 ee             	mov    %rbp,%rsi
  20:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  25:	e8 02 fd ff ff       	call   0xfffffffffffffd2c
  2a:*	ff 34 24             	push   (%rsp)		<-- trapping instruction
  2d:	9d                   	popf
  2e:	48 83 c4 70          	add    $0x70,%rsp
  32:	44 89 e0             	mov    %r12d,%eax
  35:	5b                   	pop    %rbx
  36:	5d                   	pop    %rbp
  37:	41 5c                	pop    %r12
  39:	41 5d                	pop    %r13
  3b:	41 5e                	pop    %r14
  3d:	41 5f                	pop    %r15
  3f:	c3                   	ret

Code starting with the faulting instruction
===========================================
   0:	ff 34 24             	push   (%rsp)
   3:	9d                   	popf
   4:	48 83 c4 70          	add    $0x70,%rsp
   8:	44 89 e0             	mov    %r12d,%eax
   b:	5b                   	pop    %rbx
   c:	5d                   	pop    %rbp
   d:	41 5c                	pop    %r12
   f:	41 5d                	pop    %r13
  11:	41 5e                	pop    %r14
  13:	41 5f                	pop    %r15
  15:	c3                   	ret
[ 8836.569464][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000246
[ 8836.569779][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 8836.570194][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8836.570602][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8836.571013][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 8836.571422][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 8836.571832][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8836.572291][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8836.572631][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8836.573043][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8836.573451][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8836.573859][    C3] PKRU: 55555554
[ 8836.574044][    C3] Call Trace:
[ 8836.574220][    C3]  <IRQ>
[ 8836.574370][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8836.574639][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8836.574889][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8836.575172][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8836.575452][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8836.575747][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8836.576028][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8836.576343][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8836.576611][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8836.576930][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8836.577229][    C3]  </IRQ>
[ 8836.577385][    C3]  <TASK>
[ 8836.577540][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8836.577862][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8836.578167][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8836.578473][ C3] ? kasan_report (./arch/x86/include/asm/smap.h:56 mm/kasan/report.c:606) 
[ 8836.578712][ C3] ? kasan_report (mm/kasan/report.c:585) 
[ 8836.578948][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8836.579245][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 8836.579484][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8836.579776][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8836.580096][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8836.580400][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8836.580654][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8836.580934][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8836.581225][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8836.581470][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8836.581719][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8836.581954][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8836.582194][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8836.582443][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8836.582746][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8836.583008][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8836.583351][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8836.583627][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8836.583924][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8836.584227][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8836.584520][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8836.584769][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8836.585027][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8836.585274][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8836.585595][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8836.585891][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8836.586215][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8836.586527][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8836.586780][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8836.587031][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8836.587283][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8836.587602][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8836.587847][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8836.588084][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8836.588417][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8836.588669][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8836.589015][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8836.589341][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8836.589634][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8836.589954][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8836.590197][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8836.590431][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8836.590721][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8836.590982][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8836.591227][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8836.591495][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8836.591754][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8836.591993][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8836.592275][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8836.592516][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8836.592760][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8836.593102][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8836.593370][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8836.593635][ C3] kthread (kernel/kthread.c:388) 
[ 8836.593849][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8836.594089][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8836.594321][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8836.594562][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8836.594816][    C3]  </TASK>
| [ 8859.256229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8859.256604][    C3] rcu: 3-....: (5324880 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1159380
| [ 8859.257188][    C3] rcu: (t=5332349 jiffies g=2723341 q=5646 ncpus=4)
[ 8859.258017][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8859.258648][    C3] Workqueue: netns cleanup_net
[ 8859.258901][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8859.259177][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 8859.260171][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 8859.260485][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 8859.260896][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8859.261306][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8859.261714][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8859.262122][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 8859.262532][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8859.262992][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8859.263333][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8859.263744][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8859.264152][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8859.264564][    C3] PKRU: 55555554
[ 8859.264749][    C3] Call Trace:
[ 8859.264923][    C3]  <IRQ>
[ 8859.265075][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 8859.265356][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 8859.265614][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 8859.265872][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 8859.266165][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 8859.266403][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 8859.266679][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 8859.266955][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 8859.267218][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 8859.267511][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8859.267759][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 8859.268081][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8859.268364][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8859.268662][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8859.268933][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8859.269246][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8859.269516][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8859.269834][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8859.270136][    C3]  </IRQ>
[ 8859.270292][    C3]  <TASK>
[ 8859.270445][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8859.270768][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8859.271065][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8859.271364][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 8859.271609][ C3] kasan_report (mm/kasan/report.c:585) 
[ 8859.271836][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8859.272133][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 8859.272388][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8859.272678][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8859.272999][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8859.273301][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8859.273557][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8859.273836][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8859.274128][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8859.274374][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8859.274619][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8859.274857][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8859.275096][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8859.275345][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8859.275649][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8859.275911][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8859.276251][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8859.276526][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8859.276824][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8859.277125][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8859.277419][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8859.277667][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8859.277926][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8859.278174][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8859.278497][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8859.278796][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8859.279118][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8859.279429][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8859.279684][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8859.279935][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8859.280186][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8859.280502][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8859.280748][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8859.280988][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8859.281319][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8859.281570][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8859.281919][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8859.282245][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8859.282538][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8859.282857][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8859.283104][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8859.283337][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8859.283628][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8859.283887][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8859.284133][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8859.284401][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8859.284662][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8859.284899][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8859.285181][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8859.285421][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8859.285667][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8859.286008][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8859.286275][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8859.286542][ C3] kthread (kernel/kthread.c:388) 
[ 8859.286756][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8859.286995][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8859.287230][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8859.287471][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8869.191243][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 5341989 jiffies s: 467069 root: 0x8/.
| [ 8869.191894][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8869.192270][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 8869.192549][    C3] NMI backtrace for cpu 3
[ 8869.192557][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8869.192559][    C3] Workqueue: netns cleanup_net
[ 8869.192565][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8869.192571][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8869.192573][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8869.192576][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8869.192578][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8869.192579][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8869.192581][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8869.192583][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8869.192584][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8869.192586][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8869.192590][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8869.192592][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8869.192593][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8869.192594][    C3] PKRU: 55555554
[ 8869.192596][    C3] Call Trace:
[ 8869.192597][    C3]  <NMI>
[ 8869.192599][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 8869.192604][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 8869.192608][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 8869.192613][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 8869.192616][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 8869.192619][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 8869.192623][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8869.192627][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8869.192630][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8869.192633][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8869.192637][    C3]  </NMI>
[ 8869.192637][    C3]  <TASK>
[ 8869.192639][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8869.192643][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8869.192647][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8869.192652][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8869.192655][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8869.192659][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8869.192661][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8869.192666][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8869.192669][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8869.192673][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8869.192675][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8869.192680][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8869.192683][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8869.192686][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8869.192690][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8869.192695][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8869.192698][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8869.192703][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8869.192709][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8869.192712][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8869.192715][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8869.192722][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8869.192729][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8869.192735][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8869.192740][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8869.192744][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8869.192748][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8869.192752][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8869.192759][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8869.192764][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8869.192767][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8869.192772][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8869.192775][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8869.192778][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8869.192782][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8869.192785][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8869.192789][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8869.192792][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8869.192795][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8869.192798][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8869.192801][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8869.192803][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8869.192807][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8869.192811][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8869.192814][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8869.192819][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8869.192822][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8869.192825][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8869.192829][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8869.192832][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8869.192834][ C3] kthread (kernel/kthread.c:388) 
[ 8869.192837][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8869.192839][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8869.192842][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8869.192844][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8896.564858][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8896.565342][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8896.565830][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8896.566313][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8896.567278][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8896.567905][    C3] Workqueue: netns cleanup_net
[ 8896.568158][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8896.568492][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8896.569489][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8896.569803][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8896.570215][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8896.570625][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8896.571033][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8896.571442][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8896.571852][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8896.572310][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8896.572651][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8896.573062][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8896.573470][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8896.573881][    C3] PKRU: 55555554
[ 8896.574066][    C3] Call Trace:
[ 8896.574240][    C3]  <IRQ>
[ 8896.574393][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8896.574662][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8896.574911][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8896.575197][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8896.575478][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8896.575774][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8896.576046][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8896.576358][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8896.576626][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8896.576945][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8896.577251][    C3]  </IRQ>
[ 8896.577404][    C3]  <TASK>
[ 8896.577559][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8896.577882][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8896.578189][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8896.578493][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8896.578812][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8896.579115][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8896.579370][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8896.579656][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8896.579950][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8896.580194][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8896.580441][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8896.580679][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8896.580916][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8896.581163][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8896.581469][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8896.581731][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8896.582074][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8896.582348][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8896.582647][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8896.582950][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8896.583246][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8896.583493][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8896.583752][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8896.583996][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8896.584320][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8896.584618][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8896.584940][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8896.585252][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8896.585507][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8896.585757][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8896.586009][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8896.586324][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8896.586569][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8896.586809][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8896.587138][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8896.587389][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8896.587737][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8896.588067][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8896.588358][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8896.588679][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8896.588924][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8896.589158][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8896.589449][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8896.589708][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8896.589954][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8896.590223][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8896.590483][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8896.590718][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8896.591000][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8896.591240][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8896.591487][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8896.591827][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8896.592093][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8896.592358][ C3] kthread (kernel/kthread.c:388) 
[ 8896.592575][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8896.592814][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8896.593048][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8896.593288][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8924.564884][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8924.565374][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8924.565867][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8924.566354][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8924.567325][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8924.567957][    C3] Workqueue: netns cleanup_net
[ 8924.568210][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8924.568541][ C3] Code: 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 be 04 00 00 00 48 89 ef e8 d0 79 e9 fd <41> 0f b6 45 00 41 38 c4 7c 08 84 c0 0f 85 42 09 00 00 8b 5d 00 85
All code
========
   0:	01 00                	add    %eax,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   b:	fc ff df 
   e:	49 c1 ed 03          	shr    $0x3,%r13
  12:	41 83 e4 07          	and    $0x7,%r12d
  16:	49 01 c5             	add    %rax,%r13
  19:	41 83 c4 03          	add    $0x3,%r12d
  1d:	be 04 00 00 00       	mov    $0x4,%esi
  22:	48 89 ef             	mov    %rbp,%rdi
  25:	e8 d0 79 e9 fd       	call   0xfffffffffde979fa
  2a:*	41 0f b6 45 00       	movzbl 0x0(%r13),%eax		<-- trapping instruction
  2f:	41 38 c4             	cmp    %al,%r12b
  32:	7c 08                	jl     0x3c
  34:	84 c0                	test   %al,%al
  36:	0f 85 42 09 00 00    	jne    0x97e
  3c:	8b 5d 00             	mov    0x0(%rbp),%ebx
  3f:	85                   	.byte 0x85

Code starting with the faulting instruction
===========================================
   0:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
   5:	41 38 c4             	cmp    %al,%r12b
   8:	7c 08                	jl     0x12
   a:	84 c0                	test   %al,%al
   c:	0f 85 42 09 00 00    	jne    0x954
  12:	8b 5d 00             	mov    0x0(%rbp),%ebx
  15:	85                   	.byte 0x85
[ 8924.569541][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000202
[ 8924.569857][    C3] RAX: 0000000000000001 RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 8924.570268][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8924.570680][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8924.571092][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8924.571502][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8924.571912][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8924.572373][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8924.572714][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8924.573129][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8924.573539][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8924.573949][    C3] PKRU: 55555554
[ 8924.574137][    C3] Call Trace:
[ 8924.574314][    C3]  <IRQ>
[ 8924.574465][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8924.574735][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8924.574986][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8924.575271][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8924.575553][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8924.575850][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8924.576123][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8924.576439][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8924.576709][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8924.577029][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8924.577332][    C3]  </IRQ>
[ 8924.577488][    C3]  <TASK>
[ 8924.577643][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8924.577973][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8924.578272][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8924.578570][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8924.578893][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8924.579199][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8924.579456][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8924.579738][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8924.580031][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8924.580278][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8924.580527][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8924.580764][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8924.581005][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8924.581257][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8924.581561][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8924.581824][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8924.582169][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8924.582449][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8924.582746][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8924.583051][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8924.583344][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8924.583594][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8924.583854][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8924.584101][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8924.584426][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8924.584722][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8924.585046][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8924.585360][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8924.585615][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8924.585865][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8924.586118][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8924.586435][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8924.586682][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8924.586919][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8924.587251][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8924.587502][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8924.587854][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8924.588181][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8924.588475][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8924.588796][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8924.589041][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8924.589276][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8924.589568][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8924.589828][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8924.590073][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8924.590342][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8924.590603][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8924.590842][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8924.591124][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8924.591367][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8924.591610][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8924.591956][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8924.592224][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8924.592491][ C3] kthread (kernel/kthread.c:388) 
[ 8924.592705][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8924.592946][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8924.593178][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8924.593420][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8924.593675][    C3]  </TASK>
| [ 8937.291229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8937.291590][    C3] rcu: 3-....: (5402801 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1175715
| [ 8937.292174][    C3] rcu: (t=5410384 jiffies g=2723341 q=5646 ncpus=4)
[ 8937.293003][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8937.293635][    C3] Workqueue: netns cleanup_net
[ 8937.293886][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8937.294223][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8937.295218][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8937.295534][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8937.295947][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8937.296358][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8937.296768][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8937.297180][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8937.297592][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8937.298056][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8937.298398][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8937.298809][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8937.299222][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8937.299632][    C3] PKRU: 55555554
[ 8937.299820][    C3] Call Trace:
[ 8937.299995][    C3]  <IRQ>
[ 8937.300147][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 8937.300428][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 8937.300689][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 8937.300948][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 8937.301243][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 8937.301482][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 8937.301759][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 8937.302036][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 8937.302300][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 8937.302596][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8937.302846][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 8937.303166][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8937.303450][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8937.303746][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8937.304019][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8937.304335][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8937.304605][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8937.304925][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8937.305230][    C3]  </IRQ>
[ 8937.305385][    C3]  <TASK>
[ 8937.305539][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8937.305865][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8937.306170][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8937.306474][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8937.306796][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8937.307104][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8937.307361][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8937.307641][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8937.307939][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8937.308185][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8937.308433][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8937.308671][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8937.308909][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8937.309161][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8937.309467][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8937.309731][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8937.310073][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8937.310351][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8937.310651][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8937.310954][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8937.311251][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8937.311498][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8937.311757][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8937.312005][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8937.312331][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8937.312626][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8937.312950][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8937.313264][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8937.313521][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8937.313773][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8937.314024][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8937.314341][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8937.314589][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8937.314828][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8937.315159][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8937.315408][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8937.315761][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8937.316088][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8937.316381][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8937.316701][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8937.316948][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8937.317182][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8937.317480][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8937.317739][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8937.317989][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8937.318259][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8937.318520][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8937.318761][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8937.319042][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8937.319287][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8937.319534][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8937.319877][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8937.320145][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8937.320414][ C3] kthread (kernel/kthread.c:388) 
[ 8937.320627][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8937.320871][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8937.321104][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8937.321344][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8964.564879][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8964.565369][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8964.565858][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8964.566347][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8964.567321][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8964.567952][    C3] Workqueue: netns cleanup_net
[ 8964.568204][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 8964.568473][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 8964.569473][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 8964.569790][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 8964.570201][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8964.570613][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8964.571023][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 8964.571434][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 8964.571843][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8964.572304][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8964.572648][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8964.573061][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8964.573472][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8964.573883][    C3] PKRU: 55555554
[ 8964.574070][    C3] Call Trace:
[ 8964.574247][    C3]  <IRQ>
[ 8964.574397][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8964.574666][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8964.574918][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8964.575203][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8964.575487][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8964.575783][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8964.576056][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8964.576373][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8964.576644][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8964.576964][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8964.577268][    C3]  </IRQ>
[ 8964.577424][    C3]  <TASK>
[ 8964.577577][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8964.577906][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8964.578212][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8964.578514][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 8964.578757][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8964.579052][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8964.579374][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8964.579682][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8964.579939][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8964.580220][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8964.580514][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8964.580760][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8964.581010][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8964.581250][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8964.581488][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8964.581739][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8964.582047][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8964.582311][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8964.582655][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8964.582932][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8964.583233][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8964.583537][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8964.583833][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8964.584080][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8964.584341][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8964.584589][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8964.584915][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8964.585211][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8964.585536][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8964.585853][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8964.586111][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8964.586363][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8964.586614][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8964.586931][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8964.587180][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8964.587421][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8964.587758][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8964.588009][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8964.588361][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8964.588690][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8964.588983][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8964.589306][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8964.589553][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8964.589786][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8964.590081][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8964.590342][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8964.590587][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8964.590857][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8964.591118][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8964.591357][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8964.591638][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8964.591883][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8964.592131][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8964.592474][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8964.592743][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8964.593012][ C3] kthread (kernel/kthread.c:388) 
[ 8964.593225][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8964.593468][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8964.593702][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8964.593942][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8967.495243][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 5440293 jiffies s: 467069 root: 0x8/.
| [ 8967.495881][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8967.496256][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 8967.496537][    C3] NMI backtrace for cpu 3
[ 8967.496544][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8967.496546][    C3] Workqueue: netns cleanup_net
[ 8967.496550][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 8967.496555][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 8967.496558][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 8967.496560][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 8967.496561][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8967.496563][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8967.496564][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 8967.496566][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 8967.496567][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8967.496569][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8967.496572][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8967.496574][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8967.496575][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8967.496577][    C3] PKRU: 55555554
[ 8967.496578][    C3] Call Trace:
[ 8967.496580][    C3]  <NMI>
[ 8967.496581][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 8967.496586][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 8967.496590][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 8967.496595][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 8967.496598][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 8967.496601][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 8967.496604][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8967.496609][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8967.496612][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 8967.496615][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 8967.496618][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 8967.496621][    C3]  </NMI>
[ 8967.496622][    C3]  <TASK>
[ 8967.496626][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8967.496629][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8967.496633][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8967.496637][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8967.496641][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8967.496644][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8967.496647][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8967.496650][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8967.496655][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8967.496658][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8967.496662][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8967.496665][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8967.496669][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8967.496672][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8967.496675][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8967.496679][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8967.496684][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8967.496687][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8967.496692][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8967.496696][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8967.496700][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8967.496703][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8967.496709][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8967.496716][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8967.496721][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8967.496726][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8967.496730][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8967.496734][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8967.496739][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8967.496746][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8967.496749][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8967.496753][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8967.496757][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8967.496760][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8967.496763][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8967.496768][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8967.496771][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8967.496775][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8967.496778][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8967.496781][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8967.496783][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8967.496786][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8967.496789][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8967.496793][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8967.496797][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8967.496800][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8967.496804][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8967.496807][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8967.496810][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8967.496814][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8967.496817][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8967.496819][ C3] kthread (kernel/kthread.c:388) 
[ 8967.496822][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8967.496824][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8967.496827][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8967.496829][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8992.564869][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 8992.565358][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 8992.565845][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 8992.566330][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 8992.567296][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 8992.567929][    C3] Workqueue: netns cleanup_net
[ 8992.568180][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8992.568514][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 8992.569508][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 8992.569824][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 8992.570235][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 8992.570644][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 8992.571052][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 8992.571463][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 8992.571873][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 8992.572332][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8992.572673][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 8992.573084][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8992.573495][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8992.573905][    C3] PKRU: 55555554
[ 8992.574092][    C3] Call Trace:
[ 8992.574266][    C3]  <IRQ>
[ 8992.574420][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 8992.574690][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 8992.574940][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 8992.575225][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 8992.575506][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 8992.575804][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 8992.576076][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 8992.576392][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 8992.576661][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 8992.576977][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 8992.577281][    C3]  </IRQ>
[ 8992.577437][    C3]  <TASK>
[ 8992.577596][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 8992.577922][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 8992.578224][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 8992.578529][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 8992.578852][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 8992.579157][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8992.579412][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8992.579693][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 8992.579986][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8992.580232][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8992.580480][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 8992.580716][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 8992.580955][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 8992.581205][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8992.581509][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 8992.581773][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8992.582114][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 8992.582394][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 8992.582692][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8992.582996][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 8992.583290][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 8992.583540][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 8992.583800][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 8992.584047][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 8992.584370][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 8992.584667][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 8992.584991][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 8992.585304][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 8992.585559][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 8992.585810][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 8992.586062][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 8992.586378][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 8992.586625][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 8992.586863][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 8992.587193][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 8992.587445][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 8992.587799][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 8992.588125][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 8992.588420][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 8992.588740][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 8992.588985][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 8992.589219][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 8992.589511][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 8992.589770][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 8992.590016][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 8992.590285][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 8992.590545][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 8992.590784][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 8992.591065][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 8992.591307][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 8992.591551][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 8992.591895][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8992.592162][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 8992.592429][ C3] kthread (kernel/kthread.c:388) 
[ 8992.592643][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8992.592883][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 8992.593116][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 8992.593359][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 8992.593613][    C3]  </TASK>
| [ 9015.325229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9015.325591][    C3] rcu: 3-....: (5480720 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1192059
| [ 9015.326176][    C3] rcu: (t=5488418 jiffies g=2723341 q=5646 ncpus=4)
[ 9015.327006][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9015.327642][    C3] Workqueue: netns cleanup_net
[ 9015.327895][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 9015.328164][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 9015.329159][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 9015.329476][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 9015.329885][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9015.330294][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 9015.330705][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 9015.331115][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 9015.331526][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9015.331985][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9015.332326][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9015.332737][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9015.333148][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9015.333556][    C3] PKRU: 55555554
[ 9015.333743][    C3] Call Trace:
[ 9015.333918][    C3]  <IRQ>
[ 9015.334069][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 9015.334348][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 9015.334609][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 9015.334867][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 9015.335159][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 9015.335398][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 9015.335675][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 9015.335951][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 9015.336215][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 9015.336510][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 9015.336760][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 9015.337080][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 9015.337361][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 9015.337660][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 9015.337932][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 9015.338247][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 9015.338515][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 9015.338833][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 9015.339138][    C3]  </IRQ>
[ 9015.339293][    C3]  <TASK>
[ 9015.339446][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 9015.339768][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9015.340074][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9015.340378][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 9015.340616][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9015.340920][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9015.341212][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9015.341532][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9015.341837][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9015.342092][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9015.342371][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9015.342662][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9015.342907][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9015.343156][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9015.343392][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9015.343632][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9015.343882][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9015.344186][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9015.344450][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9015.344793][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9015.345068][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9015.345366][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9015.345669][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9015.345962][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9015.346210][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9015.346470][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9015.346717][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9015.347049][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9015.347344][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9015.347670][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9015.347985][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9015.348241][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9015.348490][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9015.348740][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9015.349057][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9015.349305][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9015.349541][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9015.349870][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9015.350121][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9015.350471][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9015.350797][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9015.351091][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9015.351414][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9015.351659][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9015.351891][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9015.352183][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9015.352441][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9015.352685][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9015.352954][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9015.353214][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9015.353453][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9015.353733][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9015.353976][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9015.354221][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9015.354565][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9015.354832][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9015.355099][ C3] kthread (kernel/kthread.c:388) 
[ 9015.355311][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9015.355553][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9015.355785][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9015.356026][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9040.564878][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 9040.565370][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 9040.565858][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 9040.566343][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 9040.567316][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9040.567945][    C3] Workqueue: netns cleanup_net
[ 9040.568196][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 9040.568491][ C3] Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 <44> 0f b6 c2 48 01 f0 55 53 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	66 0f 1f 00          	nopw   (%rax)
  1c:	48 85 f6             	test   %rsi,%rsi
  1f:	0f 84 5e 01 00 00    	je     0x183
  25:	48 89 f8             	mov    %rdi,%rax
  28:	41 54                	push   %r12
  2a:*	44 0f b6 c2          	movzbl %dl,%r8d		<-- trapping instruction
  2e:	48 01 f0             	add    %rsi,%rax
  31:	55                   	push   %rbp
  32:	53                   	push   %rbx
  33:	72 14                	jb     0x49
  35:	eb 26                	jmp    0x5d
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	48                   	rex.W
  3b:	b8 ff ff ff ff       	mov    $0xffffffff,%eax

Code starting with the faulting instruction
===========================================
   0:	44 0f b6 c2          	movzbl %dl,%r8d
   4:	48 01 f0             	add    %rsi,%rax
   7:	55                   	push   %rbp
   8:	53                   	push   %rbx
   9:	72 14                	jb     0x1f
   b:	eb 26                	jmp    0x33
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	48                   	rex.W
  11:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
[ 9040.569485][    C3] RSP: 0018:ffffc9000051f4c0 EFLAGS: 00000202
[ 9040.569801][    C3] RAX: ffff888022f2b208 RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 9040.570209][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9040.570617][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 9040.571024][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 9040.571432][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 9040.571839][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9040.572296][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9040.572636][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9040.573046][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9040.573454][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9040.573861][    C3] PKRU: 55555554
[ 9040.574046][    C3] Call Trace:
[ 9040.574221][    C3]  <IRQ>
[ 9040.574372][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 9040.574641][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 9040.574891][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 9040.575174][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 9040.575454][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 9040.575748][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 9040.576018][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 9040.576333][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 9040.576601][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 9040.576918][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 9040.577220][    C3]  </IRQ>
[ 9040.577378][    C3]  <TASK>
[ 9040.577531][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 9040.577854][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9040.578152][ C3] ? kasan_check_range (mm/kasan/generic.c:188) 
[ 9040.578414][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9040.578701][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9040.579022][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9040.579325][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9040.579579][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9040.579860][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9040.580150][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9040.580397][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9040.580645][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9040.580880][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9040.581119][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9040.581368][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9040.581670][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9040.581932][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9040.582275][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9040.582551][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9040.582847][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9040.583150][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9040.583443][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9040.583692][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9040.583951][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9040.584197][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9040.584520][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9040.584815][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9040.585138][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9040.585451][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9040.585705][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9040.585954][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9040.586206][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9040.586522][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9040.586768][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9040.587005][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9040.587340][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9040.587591][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9040.587939][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9040.588265][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9040.588558][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9040.588877][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9040.589121][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9040.589355][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9040.589645][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9040.589903][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9040.590148][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9040.590415][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9040.590676][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9040.590914][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9040.591195][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9040.591437][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9040.591680][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9040.592023][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9040.592291][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9040.592556][ C3] kthread (kernel/kthread.c:388) 
[ 9040.592768][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9040.593010][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9040.593240][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9040.593481][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9065.799241][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 5538597 jiffies s: 467069 root: 0x8/.
| [ 9065.799893][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9065.800266][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 9065.800546][    C3] NMI backtrace for cpu 3
[ 9065.800555][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9065.800557][    C3] Workqueue: netns cleanup_net
[ 9065.800563][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 9065.800568][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 9065.800571][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 9065.800573][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 9065.800575][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9065.800577][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 9065.800578][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 9065.800580][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 9065.800582][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9065.800584][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9065.800587][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9065.800589][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9065.800590][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9065.800591][    C3] PKRU: 55555554
[ 9065.800592][    C3] Call Trace:
[ 9065.800595][    C3]  <NMI>
[ 9065.800597][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 9065.800602][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 9065.800607][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 9065.800611][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 9065.800615][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 9065.800618][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 9065.800622][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9065.800627][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 9065.800630][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 9065.800633][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 9065.800636][    C3]  </NMI>
[ 9065.800637][    C3]  <TASK>
[ 9065.800641][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9065.800644][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9065.800648][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9065.800653][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9065.800658][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9065.800660][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9065.800664][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9065.800666][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9065.800671][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9065.800674][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9065.800678][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9065.800680][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9065.800685][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9065.800688][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9065.800692][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9065.800695][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9065.800700][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9065.800703][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9065.800708][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9065.800713][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9065.800717][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9065.800720][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9065.800727][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9065.800734][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9065.800740][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9065.800744][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9065.800748][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9065.800752][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9065.800757][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9065.800764][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9065.800768][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9065.800772][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9065.800777][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9065.800780][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9065.800783][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9065.800787][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9065.800790][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9065.800794][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9065.800797][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9065.800800][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9065.800803][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9065.800806][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9065.800808][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9065.800813][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9065.800817][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9065.800820][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9065.800824][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9065.800827][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9065.800830][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9065.800834][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9065.800837][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9065.800840][ C3] kthread (kernel/kthread.c:388) 
[ 9065.800842][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9065.800845][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9065.800848][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9065.800850][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9092.564877][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 9092.565368][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 9092.565858][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 9092.566344][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 9092.567318][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9092.567948][    C3] Workqueue: netns cleanup_net
[ 9092.568201][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:13 ./arch/x86/include/asm/vdso/processor.h:18 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 9092.568537][ C3] Code: 24 80 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 e9 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2
All code
========
   0:	24 80                	and    $0x80,%al
   2:	00 00                	add    %al,(%rax)
   4:	00 65 48             	add    %ah,0x48(%rbp)
   7:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   e:	0f 85 43 0a 00 00    	jne    0xa57
  14:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  1b:	5b                   	pop    %rbx
  1c:	5d                   	pop    %rbp
  1d:	41 5c                	pop    %r12
  1f:	41 5d                	pop    %r13
  21:	41 5e                	pop    %r14
  23:	41 5f                	pop    %r15
  25:	c3                   	ret
  26:	cc                   	int3
  27:	cc                   	int3
  28:	cc                   	int3
  29:	cc                   	int3
  2a:*	f3 90                	pause		<-- trapping instruction
  2c:	e9 71 ff ff ff       	jmp    0xffffffffffffffa2
  31:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  36:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3d:	0f                   	.byte 0xf
  3e:	84 e2                	test   %ah,%dl

Code starting with the faulting instruction
===========================================
   0:	f3 90                	pause
   2:	e9 71 ff ff ff       	jmp    0xffffffffffffff78
   7:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   c:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  13:	0f                   	.byte 0xf
  14:	84 e2                	test   %ah,%dl
[ 9092.569533][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 9092.569850][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 9092.570260][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9092.570669][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 9092.571079][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 9092.571491][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 9092.571902][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9092.572362][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9092.572704][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9092.573115][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9092.573527][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9092.573937][    C3] PKRU: 55555554
[ 9092.574124][    C3] Call Trace:
[ 9092.574299][    C3]  <IRQ>
[ 9092.574451][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 9092.574722][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 9092.574974][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 9092.575259][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 9092.575539][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 9092.575837][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 9092.576109][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 9092.576426][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 9092.576696][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 9092.577016][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 9092.577319][    C3]  </IRQ>
[ 9092.577475][    C3]  <TASK>
[ 9092.577630][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 9092.577953][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9092.578256][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:13 ./arch/x86/include/asm/vdso/processor.h:18 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 9092.578559][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9092.578883][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9092.579188][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9092.579443][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9092.579724][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9092.580016][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9092.580262][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9092.580511][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9092.580747][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9092.580988][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9092.581239][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9092.581542][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9092.581805][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9092.582149][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9092.582426][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9092.582724][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9092.583030][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9092.583324][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9092.583572][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9092.583832][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9092.584079][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9092.584405][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9092.584702][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9092.585026][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9092.585339][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9092.585594][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9092.585845][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9092.586097][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9092.586415][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9092.586663][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9092.586900][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9092.587235][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9092.587487][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9092.587835][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9092.588163][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9092.588458][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9092.588780][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9092.589024][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9092.589259][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9092.589551][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9092.589811][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9092.590057][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9092.590325][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9092.590586][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9092.590824][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9092.591106][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9092.591350][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9092.591593][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9092.591939][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9092.592207][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9092.592475][ C3] kthread (kernel/kthread.c:388) 
[ 9092.592688][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9092.592931][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9092.593162][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9092.593405][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9092.593660][    C3]  </TASK>
| [ 9093.360229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9093.360577][    C3] rcu: 3-....: (5558641 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1208370
| [ 9093.361160][    C3] rcu: (t=5566453 jiffies g=2723341 q=5646 ncpus=4)
[ 9093.361989][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9093.362615][    C3] Workqueue: netns cleanup_net
[ 9093.362866][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 9093.363135][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 9093.364131][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 9093.364447][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 9093.364857][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9093.365267][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 9093.365677][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 9093.366086][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 9093.366496][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9093.366955][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9093.367299][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9093.367711][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9093.368121][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9093.368529][    C3] PKRU: 55555554
[ 9093.368716][    C3] Call Trace:
[ 9093.368891][    C3]  <IRQ>
[ 9093.369039][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 9093.369318][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 9093.369578][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 9093.369836][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 9093.370131][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 9093.370367][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 9093.370643][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 9093.370922][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 9093.371186][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 9093.371477][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 9093.371726][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 9093.372048][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 9093.372328][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 9093.372624][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 9093.372896][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 9093.373208][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 9093.373478][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 9093.373794][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 9093.374099][    C3]  </IRQ>
[ 9093.374253][    C3]  <TASK>
[ 9093.374409][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 9093.374731][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9093.375029][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 9093.375270][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 9093.375525][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9093.375813][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9093.376135][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9093.376437][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9093.376693][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9093.376973][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9093.377270][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9093.377516][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9093.377762][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9093.377999][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9093.378238][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9093.378487][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9093.378791][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9093.379053][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9093.379397][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9093.379673][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9093.379971][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9093.380274][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9093.380567][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9093.380816][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9093.381076][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9093.381321][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9093.381643][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9093.381943][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9093.382267][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9093.382578][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9093.382832][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9093.383085][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9093.383337][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9093.383655][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9093.383901][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9093.384139][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9093.384470][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9093.384721][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9093.385070][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9093.385397][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9093.385690][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9093.386010][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9093.386255][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9093.386490][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9093.386780][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9093.387043][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9093.387287][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9093.387557][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9093.387818][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9093.388056][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9093.388337][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9093.388578][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9093.388822][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9093.389164][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9093.389431][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9093.389698][ C3] kthread (kernel/kthread.c:388) 
[ 9093.389911][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9093.390152][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9093.390384][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9093.390625][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9120.564876][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 9120.565367][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 9120.565857][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 9120.566341][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 9120.567320][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9120.567951][    C3] Workqueue: netns cleanup_net
[ 9120.568203][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 9120.568539][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 9120.569533][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 9120.569849][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 9120.570262][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9120.570672][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 9120.571082][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 9120.571494][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 9120.571905][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9120.572366][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9120.572708][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9120.573120][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9120.573532][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9120.573943][    C3] PKRU: 55555554
[ 9120.574133][    C3] Call Trace:
[ 9120.574306][    C3]  <IRQ>
[ 9120.574461][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 9120.574732][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 9120.574984][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 9120.575270][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 9120.575549][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 9120.575847][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 9120.576120][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 9120.576435][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 9120.576705][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 9120.577026][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 9120.577332][    C3]  </IRQ>
[ 9120.577486][    C3]  <TASK>
[ 9120.577643][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 9120.577969][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9120.578272][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 9120.578578][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9120.578902][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9120.579206][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9120.579472][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9120.579754][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9120.580048][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9120.580295][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9120.580543][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9120.580781][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9120.581024][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9120.581274][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9120.581580][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9120.581843][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9120.582186][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9120.582467][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9120.582765][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9120.583071][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9120.583366][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9120.583616][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9120.583877][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9120.584124][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9120.584449][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9120.584750][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9120.585075][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9120.585389][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9120.585646][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9120.585898][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9120.586151][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9120.586469][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9120.586716][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9120.586960][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9120.587291][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9120.587543][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9120.587893][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9120.588221][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9120.588514][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9120.588836][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9120.589082][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9120.589319][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9120.589611][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9120.589871][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9120.590116][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9120.590387][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9120.590649][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9120.590887][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9120.591172][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9120.591414][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9120.591661][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9120.592003][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9120.592272][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9120.592540][ C3] kthread (kernel/kthread.c:388) 
[ 9120.592756][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9120.592997][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9120.593230][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9120.593474][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9148.564873][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 9148.565363][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 9148.565849][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 9148.566335][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 9148.567305][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9148.567935][    C3] Workqueue: netns cleanup_net
[ 9148.568188][ C3] RIP: 0010:kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 9148.568456][ C3] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 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
All code
========
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	66 0f 1f 00          	nopw   (%rax)
  15:	41 57                	push   %r15
  17:	41 56                	push   %r14
  19:	41 55                	push   %r13
  1b:	41 54                	push   %r12
  1d:	55                   	push   %rbp
  1e:	53                   	push   %rbx
  1f:	48 83 ec 70          	sub    $0x70,%rsp
  23:	9c                   	pushf
  24:	8f 04 24             	pop    (%rsp)
  27:	0f 01 ca             	clac
  2a:*	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15		<-- trapping instruction
  31:	1f 00 
  33:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  3a:	85 c0                	test   %eax,%eax
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b7 00                	mov    $0x0,%bh

Code starting with the faulting instruction
===========================================
   0:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
   7:	1f 00 
   9:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
  10:	85 c0                	test   %eax,%eax
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b7 00                	mov    $0x0,%bh
[ 9148.569452][    C3] RSP: 0018:ffffc9000051f408 EFLAGS: 00000282
[ 9148.569768][    C3] RAX: 0000000000000001 RBX: ffffed10045e5642 RCX: ffffffffa8cb35b0
[ 9148.570178][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9148.570586][    C3] RBP: ffffed10045e5641 R08: 0000000000000000 R09: ffffed10045e5641
[ 9148.570994][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 9148.571406][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 9148.571814][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9148.572273][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9148.572613][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9148.573025][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9148.573436][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9148.573844][    C3] PKRU: 55555554
[ 9148.574032][    C3] Call Trace:
[ 9148.574207][    C3]  <IRQ>
[ 9148.574360][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 9148.574631][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 9148.574882][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 9148.575166][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 9148.575447][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 9148.575746][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 9148.576018][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 9148.576334][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 9148.576603][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 9148.576927][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 9148.577229][    C3]  </IRQ>
[ 9148.577384][    C3]  <TASK>
[ 9148.577539][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 9148.577865][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9148.578162][ C3] ? kasan_report (./arch/x86/include/asm/current.h:42 mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 9148.578403][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 9148.578660][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9148.578949][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9148.579271][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9148.579577][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9148.579833][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9148.580114][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9148.580405][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9148.580652][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9148.580900][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9148.581136][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9148.581377][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9148.581627][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9148.581931][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9148.582193][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9148.582537][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9148.582813][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9148.583111][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9148.583416][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9148.583708][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9148.583958][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9148.584218][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9148.584466][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9148.584792][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9148.585088][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9148.585412][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9148.585727][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9148.585983][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9148.586234][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9148.586484][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9148.586804][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9148.587052][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9148.587289][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9148.587619][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9148.587872][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9148.588222][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9148.588547][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9148.588842][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9148.589163][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9148.589410][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9148.589643][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9148.589935][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9148.590194][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9148.590439][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9148.590707][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9148.590967][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9148.591206][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9148.591487][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9148.591729][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9148.591975][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9148.592319][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9148.592586][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9148.592853][ C3] kthread (kernel/kthread.c:388) 
[ 9148.593067][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9148.593309][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9148.593540][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9148.593782][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9164.103243][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 5636901 jiffies s: 467069 root: 0x8/.
| [ 9164.103892][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9164.104266][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 9164.104547][    C3] NMI backtrace for cpu 3
[ 9164.104555][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9164.104558][    C3] Workqueue: netns cleanup_net
[ 9164.104563][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 9164.104568][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 9164.104571][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 9164.104573][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 9164.104575][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9164.104576][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 9164.104578][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 9164.104580][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 9164.104582][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9164.104584][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9164.104587][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9164.104589][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9164.104590][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9164.104591][    C3] PKRU: 55555554
[ 9164.104592][    C3] Call Trace:
[ 9164.104595][    C3]  <NMI>
[ 9164.104597][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 9164.104602][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 9164.104607][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 9164.104611][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 9164.104616][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 9164.104618][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 9164.104621][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9164.104626][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9164.104630][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 9164.104633][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 9164.104636][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 9164.104639][    C3]  </NMI>
[ 9164.104640][    C3]  <TASK>
[ 9164.104643][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9164.104647][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9164.104651][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9164.104655][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9164.104660][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9164.104663][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9164.104666][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9164.104668][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9164.104673][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9164.104676][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9164.104680][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9164.104682][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9164.104687][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9164.104690][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9164.104693][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9164.104697][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9164.104702][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9164.104705][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9164.104710][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9164.104716][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9164.104719][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9164.104723][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9164.104730][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9164.104737][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9164.104742][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9164.104747][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9164.104751][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9164.104755][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9164.104760][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9164.104767][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9164.104771][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9164.104775][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9164.104780][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9164.104783][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9164.104786][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9164.104791][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9164.104794][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9164.104797][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9164.104800][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9164.104803][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9164.104806][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9164.104809][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9164.104811][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9164.104816][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9164.104820][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9164.104823][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9164.104828][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9164.104831][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9164.104834][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9164.104838][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9164.104841][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9164.104843][ C3] kthread (kernel/kthread.c:388) 
[ 9164.104846][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9164.104849][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9164.104851][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9164.104853][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9164.104860][    C3]  </TASK>
| [ 9171.394229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9171.394590][    C3] rcu: 3-....: (5636561 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1224669
| [ 9171.395176][    C3] rcu: (t=5644487 jiffies g=2723341 q=5646 ncpus=4)
[ 9171.396008][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9171.396642][    C3] Workqueue: netns cleanup_net
[ 9171.396896][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 9171.397233][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 9171.398231][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 9171.398549][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 9171.398958][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9171.399368][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 9171.399779][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 9171.400190][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 9171.400600][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9171.401059][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9171.401401][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9171.401813][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9171.402224][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9171.402633][    C3] PKRU: 55555554
[ 9171.402821][    C3] Call Trace:
[ 9171.402996][    C3]  <IRQ>
[ 9171.403148][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 9171.403428][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 9171.403689][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 9171.403947][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 9171.404241][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 9171.404480][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 9171.404757][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 9171.405035][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 9171.405299][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 9171.405594][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 9171.405844][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 9171.406165][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 9171.406447][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 9171.406746][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 9171.407019][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 9171.407332][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 9171.407602][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 9171.407921][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 9171.408226][    C3]  </IRQ>
[ 9171.408380][    C3]  <TASK>
[ 9171.408535][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 9171.408858][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9171.409164][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 9171.409469][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9171.409789][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9171.410095][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9171.410352][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9171.410632][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9171.410927][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9171.411170][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9171.411419][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9171.411658][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9171.411895][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9171.412145][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9171.412452][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9171.412716][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9171.413058][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9171.413336][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9171.413637][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9171.413939][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9171.414236][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9171.414485][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9171.414744][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9171.414990][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9171.415315][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9171.415614][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9171.415936][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9171.416251][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9171.416507][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9171.416764][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9171.417017][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9171.417333][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9171.417579][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9171.417820][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9171.418152][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9171.418402][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9171.418752][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9171.419079][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9171.419370][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9171.419691][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9171.419938][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9171.420171][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9171.420464][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9171.420723][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9171.420970][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9171.421239][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9171.421498][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9171.421735][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9171.422019][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9171.422259][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9171.422507][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9171.422849][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9171.423116][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9171.423382][ C3] kthread (kernel/kthread.c:388) 
[ 9171.423597][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9171.423838][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9171.424073][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9171.424313][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9196.564877][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 9196.565367][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 9196.565856][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 9196.566343][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 9196.567315][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9196.567943][    C3] Workqueue: netns cleanup_net
[ 9196.568196][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 9196.568473][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 9196.569470][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 9196.569785][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 9196.570196][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9196.570606][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 9196.571018][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 9196.571428][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 9196.571836][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9196.572294][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9196.572634][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9196.573047][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9196.573457][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9196.573864][    C3] PKRU: 55555554
[ 9196.574050][    C3] Call Trace:
[ 9196.574227][    C3]  <IRQ>
[ 9196.574378][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 9196.574647][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 9196.574898][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 9196.575183][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 9196.575465][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 9196.575760][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 9196.576032][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 9196.576347][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 9196.576622][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 9196.576941][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 9196.577245][    C3]  </IRQ>
[ 9196.577400][    C3]  <TASK>
[ 9196.577554][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 9196.577876][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9196.578174][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9196.578472][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 9196.578718][ C3] kasan_report (mm/kasan/report.c:585) 
[ 9196.578945][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9196.579245][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 9196.579501][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9196.579792][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9196.580113][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9196.580418][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9196.580672][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9196.580953][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9196.581244][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9196.581490][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9196.581737][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9196.581972][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9196.582212][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9196.582462][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9196.582764][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9196.583026][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9196.583368][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9196.583644][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9196.583942][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9196.584245][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9196.584539][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9196.584788][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9196.585047][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9196.585295][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9196.585619][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9196.585916][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9196.586240][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9196.586557][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9196.586812][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9196.587063][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9196.587315][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9196.587631][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9196.587878][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9196.588114][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9196.588444][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9196.588694][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9196.589042][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9196.589370][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9196.589663][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9196.589982][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9196.590227][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9196.590461][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9196.590752][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9196.591011][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9196.591256][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9196.591524][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9196.591784][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9196.592024][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9196.592304][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9196.592546][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9196.592789][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9196.593131][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9196.593399][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9196.593665][ C3] kthread (kernel/kthread.c:388) 
[ 9196.593878][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9196.594119][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9196.594350][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9196.594591][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9224.564889][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 9224.565378][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 9224.565873][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 9224.566359][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 9224.567339][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9224.567970][    C3] Workqueue: netns cleanup_net
[ 9224.568222][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 9224.568556][ C3] 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 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e2 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 65 48             	add    %ah,0x48(%rbp)
   5:	2b 04 25 28 00 00 00 	sub    0x28,%eax
   c:	0f 85 43 0a 00 00    	jne    0xa55
  12:	48 81 c4 88 00 00 00 	add    $0x88,%rsp
  19:	5b                   	pop    %rbx
  1a:	5d                   	pop    %rbp
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	c3                   	ret
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	f3 90                	pause
  2a:*	e9 71 ff ff ff       	jmp    0xffffffffffffffa0		<-- trapping instruction
  2f:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
  34:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  3b:	0f                   	.byte 0xf
  3c:	84 e2                	test   %ah,%dl
	...

Code starting with the faulting instruction
===========================================
   0:	e9 71 ff ff ff       	jmp    0xffffffffffffff76
   5:	44 8b 74 24 48       	mov    0x48(%rsp),%r14d
   a:	41 81 fe 00 01 00 00 	cmp    $0x100,%r14d
  11:	0f                   	.byte 0xf
  12:	84 e2                	test   %ah,%dl
	...
[ 9224.569560][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000206
[ 9224.569877][    C3] RAX: 0000000000000000 RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 9224.570291][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9224.570702][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 9224.571112][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 9224.571524][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 9224.571936][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9224.572399][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9224.572743][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9224.573154][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9224.573564][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9224.573977][    C3] PKRU: 55555554
[ 9224.574164][    C3] Call Trace:
[ 9224.574338][    C3]  <IRQ>
[ 9224.574493][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 9224.574765][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 9224.575015][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 9224.575303][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 9224.575583][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 9224.575880][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 9224.576154][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 9224.576471][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 9224.576743][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 9224.577061][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 9224.577368][    C3]  </IRQ>
[ 9224.577522][    C3]  <TASK>
[ 9224.577679][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 9224.578003][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9224.578308][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/vdso/processor.h:19 ./arch/x86/include/asm/qspinlock.h:99 kernel/locking/qspinlock.c:327) 
[ 9224.578614][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9224.578937][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9224.579241][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9224.579499][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9224.579779][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9224.580075][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9224.580322][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9224.580569][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9224.580809][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9224.581049][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9224.581301][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9224.581608][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9224.581873][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9224.582216][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9224.582492][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9224.582795][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9224.583098][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9224.583395][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9224.583645][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9224.583904][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9224.584149][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9224.584475][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9224.584775][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9224.585098][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9224.585411][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9224.585668][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9224.585922][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9224.586174][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9224.586497][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9224.586743][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9224.586983][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9224.587316][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9224.587567][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9224.587916][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9224.588243][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9224.588538][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9224.588858][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9224.589106][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9224.589340][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9224.589634][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9224.589894][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9224.590140][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9224.590412][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9224.590672][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9224.590910][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9224.591194][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9224.591435][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9224.591683][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9224.592025][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9224.592293][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9224.592561][ C3] kthread (kernel/kthread.c:388) 
[ 9224.592777][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9224.593016][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9224.593252][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9224.593495][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9224.593748][    C3]  </TASK>
| [ 9249.428229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9249.428596][    C3] rcu: 3-....: (5714505 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1240818
| [ 9249.429178][    C3] rcu: (t=5722521 jiffies g=2723341 q=5646 ncpus=4)
[ 9249.430011][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9249.430638][    C3] Workqueue: netns cleanup_net
[ 9249.430893][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9249.431227][ C3] Code: fa ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 e9 48 c1 e9 03 0f b6 04 01 3c 03 7f 04 84 c0 75 63 44 89 64 24 48 e9 b9 fd ff ff <48> 89 ef e8 94 68 e9 fd e9 b1 f6 ff ff 48 89 ef e8 87 68 e9 fd e9
All code
========
   0:	fa                   	cli
   1:	ff                   	(bad)
   2:	ff 48 b8             	decl   -0x48(%rax)
   5:	00 00                	add    %al,(%rax)
   7:	00 00                	add    %al,(%rax)
   9:	00 fc                	add    %bh,%ah
   b:	ff                   	(bad)
   c:	df 4c 89 e9          	fisttps -0x17(%rcx,%rcx,4)
  10:	48 c1 e9 03          	shr    $0x3,%rcx
  14:	0f b6 04 01          	movzbl (%rcx,%rax,1),%eax
  18:	3c 03                	cmp    $0x3,%al
  1a:	7f 04                	jg     0x20
  1c:	84 c0                	test   %al,%al
  1e:	75 63                	jne    0x83
  20:	44 89 64 24 48       	mov    %r12d,0x48(%rsp)
  25:	e9 b9 fd ff ff       	jmp    0xfffffffffffffde3
  2a:*	48 89 ef             	mov    %rbp,%rdi		<-- trapping instruction
  2d:	e8 94 68 e9 fd       	call   0xfffffffffde968c6
  32:	e9 b1 f6 ff ff       	jmp    0xfffffffffffff6e8
  37:	48 89 ef             	mov    %rbp,%rdi
  3a:	e8 87 68 e9 fd       	call   0xfffffffffde968c6
  3f:	e9                   	.byte 0xe9

Code starting with the faulting instruction
===========================================
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	e8 94 68 e9 fd       	call   0xfffffffffde9689c
   8:	e9 b1 f6 ff ff       	jmp    0xfffffffffffff6be
   d:	48 89 ef             	mov    %rbp,%rdi
  10:	e8 87 68 e9 fd       	call   0xfffffffffde9689c
  15:	e9                   	.byte 0xe9
[ 9249.432222][    C3] RSP: 0018:ffffc9000051f4d0 EFLAGS: 00000282
[ 9249.432539][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb35b0
[ 9249.432947][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9249.433359][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 9249.433769][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 9249.434177][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: 1ffff920000a3e9b
[ 9249.434585][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9249.435044][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9249.435388][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9249.435799][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9249.436207][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9249.436621][    C3] PKRU: 55555554
[ 9249.436807][    C3] Call Trace:
[ 9249.436983][    C3]  <IRQ>
[ 9249.437133][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 9249.437415][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 9249.437674][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 9249.437931][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 9249.438228][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 9249.438464][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 9249.438742][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 9249.439019][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 9249.439282][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 9249.439573][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 9249.439822][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 9249.440144][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 9249.440423][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 9249.440720][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 9249.440991][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 9249.441306][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 9249.441576][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 9249.441891][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 9249.442196][    C3]  </IRQ>
[ 9249.442351][    C3]  <TASK>
[ 9249.442505][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 9249.442830][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9249.443125][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9249.443429][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9249.443751][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9249.444052][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9249.444310][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9249.444589][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9249.444883][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9249.445129][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9249.445374][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9249.445613][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9249.445853][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9249.446100][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9249.446409][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9249.446672][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9249.447012][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9249.447293][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9249.447591][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9249.447893][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9249.448188][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9249.448438][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9249.448698][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9249.448943][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9249.449267][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9249.449568][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9249.449891][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9249.450203][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9249.450457][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9249.450710][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9249.450963][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9249.451280][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9249.451527][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9249.451765][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9249.452095][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9249.452346][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9249.452697][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9249.453021][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9249.453315][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9249.453634][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9249.453879][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9249.454113][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9249.454403][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9249.454662][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9249.454907][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9249.455176][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9249.455434][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9249.455671][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9249.455953][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9249.456193][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9249.456443][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9249.456783][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9249.457050][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9249.457316][ C3] kthread (kernel/kthread.c:388) 
[ 9249.457530][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9249.457770][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9249.458003][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9249.458245][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9262.407242][T21421] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 3-.... } 5735205 jiffies s: 467069 root: 0x8/.
| [ 9262.407893][T21421] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9262.408268][T21421] Sending NMI from CPU 0 to CPUs 3:
| [ 9262.408551][    C3] NMI backtrace for cpu 3
[ 9262.408560][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9262.408562][    C3] Workqueue: netns cleanup_net
[ 9262.408569][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 9262.408574][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 9262.408577][    C3] RSP: 0018:ffffc9000051f400 EFLAGS: 00000247
[ 9262.408579][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb35b0
[ 9262.408581][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9262.408583][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 9262.408584][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 9262.408586][    C3] R13: ffffffffa8cb35b0 R14: 0000000000000004 R15: ffff8880057c0040
[ 9262.408587][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9262.408589][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9262.408593][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9262.408594][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9262.408596][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9262.408597][    C3] PKRU: 55555554
[ 9262.408598][    C3] Call Trace:
[ 9262.408600][    C3]  <NMI>
[ 9262.408603][ C3] ? nmi_cpu_backtrace (lib/nmi_backtrace.c:115) 
[ 9262.408609][ C3] ? nmi_cpu_backtrace_handler (arch/x86/kernel/apic/hw_nmi.c:48) 
[ 9262.408613][ C3] ? nmi_handle (arch/x86/kernel/nmi.c:150 (discriminator 7)) 
[ 9262.408618][ C3] ? default_do_nmi (arch/x86/kernel/nmi.c:351 (discriminator 22)) 
[ 9262.408622][ C3] ? exc_nmi (arch/x86/kernel/nmi.c:545) 
[ 9262.408624][ C3] ? end_repeat_nmi (arch/x86/entry/entry_64.S:1405) 
[ 9262.408628][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9262.408633][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9262.408636][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 9262.408639][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 9262.408642][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 9262.408645][    C3]  </NMI>
[ 9262.408645][    C3]  <TASK>
[ 9262.408646][ C3] kasan_report (mm/kasan/report.c:585) 
[ 9262.408652][ C3] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 9262.408656][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9262.408660][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9262.408664][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9262.408668][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9262.408673][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9262.408676][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9262.408680][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9262.408682][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9262.408687][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9262.408690][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9262.408694][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9262.408696][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9262.408701][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9262.408704][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9262.408708][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9262.408711][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9262.408716][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9262.408719][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9262.408725][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9262.408731][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9262.408734][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9262.408738][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9262.408745][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9262.408752][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9262.408758][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9262.408762][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9262.408766][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9262.408770][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9262.408775][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9262.408782][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9262.408786][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9262.408789][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9262.408794][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9262.408798][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9262.408801][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9262.408805][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9262.408809][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9262.408812][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9262.408816][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9262.408819][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9262.408821][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9262.408824][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9262.408827][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9262.408831][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9262.408836][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9262.408839][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9262.408843][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9262.408847][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9262.408849][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9262.408853][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9262.408857][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9262.408859][ C3] kthread (kernel/kthread.c:388) 
[ 9262.408862][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9262.408864][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9262.408867][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9262.408869][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9288.564876][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 9288.565364][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 9288.565857][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 9288.566347][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 9288.567325][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9288.567955][    C3] Workqueue: netns cleanup_net
[ 9288.568209][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:609) 
[ 9288.568480][ C3] Code: 24 28 4c 89 6c 24 30 e8 7c f5 ff ff 48 8d 7c 24 10 e8 92 fa ff ff 0f b6 d3 48 89 ee 48 8d 7c 24 08 e8 02 fd ff ff ff 34 24 9d <48> 83 c4 70 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
All code
========
   0:	24 28                	and    $0x28,%al
   2:	4c 89 6c 24 30       	mov    %r13,0x30(%rsp)
   7:	e8 7c f5 ff ff       	call   0xfffffffffffff588
   c:	48 8d 7c 24 10       	lea    0x10(%rsp),%rdi
  11:	e8 92 fa ff ff       	call   0xfffffffffffffaa8
  16:	0f b6 d3             	movzbl %bl,%edx
  19:	48 89 ee             	mov    %rbp,%rsi
  1c:	48 8d 7c 24 08       	lea    0x8(%rsp),%rdi
  21:	e8 02 fd ff ff       	call   0xfffffffffffffd28
  26:	ff 34 24             	push   (%rsp)
  29:	9d                   	popf
  2a:*	48 83 c4 70          	add    $0x70,%rsp		<-- trapping instruction
  2e:	44 89 e0             	mov    %r12d,%eax
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	c3                   	ret
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	48 83 c4 70          	add    $0x70,%rsp
   4:	44 89 e0             	mov    %r12d,%eax
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	41 5c                	pop    %r12
   b:	41 5d                	pop    %r13
   d:	41 5e                	pop    %r14
   f:	41 5f                	pop    %r15
  11:	c3                   	ret
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[ 9288.569476][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 9288.569789][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 9288.570202][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9288.570612][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 9288.571020][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000000
[ 9288.571427][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 9288.571839][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9288.572298][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9288.572638][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9288.573049][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9288.573459][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9288.573869][    C3] PKRU: 55555554
[ 9288.574056][    C3] Call Trace:
[ 9288.574236][    C3]  <IRQ>
[ 9288.574393][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 9288.574662][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 9288.574913][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 9288.575198][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 9288.575477][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 9288.575775][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 9288.576046][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 9288.576367][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 9288.576637][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 9288.576956][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 9288.577258][    C3]  </IRQ>
[ 9288.577415][    C3]  <TASK>
[ 9288.577569][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 9288.577891][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9288.578195][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9288.578498][ C3] ? kasan_report (mm/kasan/report.c:609) 
[ 9288.578739][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9288.579044][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9288.579339][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9288.579660][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9288.579963][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9288.580220][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9288.580500][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9288.580794][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9288.581039][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9288.581287][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9288.581525][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9288.581764][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9288.582014][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9288.582318][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9288.582580][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9288.582921][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9288.583198][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9288.583498][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9288.583802][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9288.584097][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9288.584344][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9288.584605][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9288.584851][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9288.585174][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9288.585474][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9288.585798][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9288.586114][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9288.586370][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9288.586624][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9288.586876][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9288.587194][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9288.587439][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9288.587678][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9288.588009][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9288.588261][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9288.588610][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9288.588936][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9288.589229][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9288.589549][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9288.589795][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9288.590029][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9288.590320][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9288.590579][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9288.590824][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9288.591093][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9288.591356][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9288.591594][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9288.591877][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9288.592118][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9288.592364][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9288.592706][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9288.592975][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9288.593242][ C3] kthread (kernel/kthread.c:388) 
[ 9288.593457][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9288.593697][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9288.593930][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9288.594172][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9316.564888][ C3] hardirqs last enabled at (12124043): irqentry_exit (kernel/entry/common.c:352) 
| [ 9316.565376][ C3] hardirqs last disabled at (12124042): __do_softirq (kernel/softirq.c:569 (discriminator 1)) 
| [ 9316.565865][ C3] softirqs last enabled at (12123494): fib6_run_gc (net/ipv6/ip6_fib.c:2359) 
| [ 9316.566354][ C3] softirqs last disabled at (12123486): fib6_run_gc (net/ipv6/ip6_fib.c:2365) 
[ 9316.567325][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9316.567952][    C3] Workqueue: netns cleanup_net
[ 9316.568205][ C3] RIP: 0010:kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 9316.568473][ C3] Code: 90 90 90 90 90 90 90 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
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	66 0f 1f 00          	nopw   (%rax)
   c:	41 57                	push   %r15
   e:	41 56                	push   %r14
  10:	41 55                	push   %r13
  12:	41 54                	push   %r12
  14:	55                   	push   %rbp
  15:	53                   	push   %rbx
  16:	48 83 ec 70          	sub    $0x70,%rsp
  1a:	9c                   	pushf
  1b:	8f 04 24             	pop    (%rsp)
  1e:	0f 01 ca             	clac
  21:	65 4c 8b 3c 25 80 b8 	mov    %gs:0x1fb880,%r15
  28:	1f 00 
  2a:*	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax		<-- trapping instruction
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 b7 00 00 00    	jne    0xf0
  39:	48 89 fd             	mov    %rdi,%rbp
  3c:	49 89 f6             	mov    %rsi,%r14
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	41 8b 87 e0 17 00 00 	mov    0x17e0(%r15),%eax
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 b7 00 00 00    	jne    0xc6
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	49 89 f6             	mov    %rsi,%r14
  15:	89                   	.byte 0x89
[ 9316.569471][    C3] RSP: 0018:ffffc9000051f428 EFLAGS: 00000286
[ 9316.569788][    C3] RAX: 00000000000000fb RBX: 0000000000000047 RCX: ffffffffa8cb3f0c
[ 9316.570196][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9316.570607][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 9316.571016][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 9316.571427][    C3] R13: ffffed10045e5641 R14: 0000000000000001 R15: ffff8880057c0040
[ 9316.571836][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9316.572295][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9316.572637][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9316.573049][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9316.573458][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9316.573868][    C3] PKRU: 55555554
[ 9316.574055][    C3] Call Trace:
[ 9316.574231][    C3]  <IRQ>
[ 9316.574383][ C3] ? watchdog_timer_fn (kernel/watchdog.c:548) 
[ 9316.574652][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 9316.574904][ C3] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:466) 
[ 9316.575188][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 9316.575471][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 9316.575766][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 9316.576043][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 9316.576358][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 9316.576628][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 9316.576947][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 9316.577250][    C3]  </IRQ>
[ 9316.577406][    C3]  <TASK>
[ 9316.577559][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 9316.577885][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9316.578190][ C3] ? kasan_report (mm/kasan/report.c:93 mm/kasan/report.c:585) 
[ 9316.578429][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9316.578725][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9316.579047][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9316.579350][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9316.579607][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9316.579888][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9316.580182][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9316.580428][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9316.580674][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9316.580913][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9316.581153][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9316.581402][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9316.581708][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9316.581970][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9316.582315][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9316.582592][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9316.582891][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9316.583196][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9316.583490][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9316.583741][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9316.584001][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9316.584247][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9316.584571][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9316.584870][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9316.585194][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9316.585505][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9316.585761][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9316.586017][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9316.586270][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9316.586589][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9316.586834][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9316.587074][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9316.587405][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9316.587656][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9316.588005][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9316.588332][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9316.588625][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9316.588945][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9316.589192][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9316.589427][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9316.589718][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9316.589978][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9316.590224][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9316.590493][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9316.590754][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9316.590992][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9316.591275][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9316.591515][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9316.591762][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9316.592104][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9316.592372][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9316.592640][ C3] kthread (kernel/kthread.c:388) 
[ 9316.592855][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9316.593095][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9316.593329][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9316.593571][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) 
| [ 9316.593826][    C3]  </TASK>
| [ 9327.462229][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9327.462589][    C3] rcu: 3-....: (5792424 ticks this GP) idle=37fc/1/0x4000000000000000 softirq=3079680/3079683 fqs=1257132
| [ 9327.463173][    C3] rcu: (t=5800555 jiffies g=2723341 q=5646 ncpus=4)
[ 9327.464007][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 9327.464632][    C3] Workqueue: netns cleanup_net
[ 9327.464886][ C3] RIP: 0010:report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 9327.465163][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 05 b9 a9 a4 05 48 d1 e8 83 e0 01 75 0d f0 48 0f ba 2d a7 a9 a4 05 00 <0f> 93 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	48 8b 05 b9 a9 a4 05 	mov    0x5a4a9b9(%rip),%rax        # 0x5a4a9d1
  18:	48 d1 e8             	shr    %rax
  1b:	83 e0 01             	and    $0x1,%eax
  1e:	75 0d                	jne    0x2d
  20:	f0 48 0f ba 2d a7 a9 	lock btsq $0x0,0x5a4a9a7(%rip)        # 0x5a4a9d1
  27:	a4 05 00 
  2a:*	0f 93 c0             	setae  %al		<-- trapping instruction
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  39:	00 00 00 00 
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	40                   	rex

Code starting with the faulting instruction
===========================================
   0:	0f 93 c0             	setae  %al
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 00 
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	40                   	rex
[ 9327.466163][    C3] RSP: 0018:ffffc9000051f420 EFLAGS: 00000247
[ 9327.466478][    C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa8cb3f0c
[ 9327.466888][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888022f2b208
[ 9327.467298][    C3] RBP: ffff888022f2b208 R08: 0000000000000000 R09: ffffed10045e5641
[ 9327.467707][    C3] R10: 0000000000000003 R11: 205d313754202020 R12: 0000000000000003
[ 9327.468115][    C3] R13: ffffffffa8cb3f0c R14: 0000000000000004 R15: ffff8880057c0040
[ 9327.468526][    C3] FS:  0000000000000000(0000) GS:ffff888035e00000(0000) knlGS:0000000000000000
[ 9327.468986][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9327.469329][    C3] CR2: 0000556a576b99d8 CR3: 0000000021334001 CR4: 0000000000770ef0
[ 9327.469739][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9327.470148][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9327.470561][    C3] PKRU: 55555554
[ 9327.470747][    C3] Call Trace:
[ 9327.470921][    C3]  <IRQ>
[ 9327.471072][ C3] ? rcu_dump_cpu_stacks (kernel/rcu/tree_stall.h:379) 
[ 9327.471355][ C3] ? print_cpu_stall (kernel/rcu/tree_stall.h:699) 
[ 9327.471614][ C3] ? check_cpu_stall (kernel/rcu/tree_stall.h:799 (discriminator 2)) 
[ 9327.471871][ C3] ? debug_object_deactivate (lib/debugobjects.c:779) 
[ 9327.472166][ C3] ? rcu_pending (kernel/rcu/tree.c:3932 (discriminator 31)) 
[ 9327.472404][ C3] ? rcu_sched_clock_irq (kernel/rcu/tree.c:2291 (discriminator 22)) 
[ 9327.472682][ C3] ? update_process_times (./arch/x86/include/asm/preempt.h:26 kernel/time/timer.c:2089) 
[ 9327.472959][ C3] ? tick_sched_handle (kernel/time/tick-sched.c:256) 
[ 9327.473224][ C3] ? tick_nohz_highres_handler (kernel/time/tick-sched.c:1519) 
[ 9327.473526][ C3] ? __run_hrtimer (kernel/time/hrtimer.c:1688) 
[ 9327.473777][ C3] ? __pfx_tick_nohz_highres_handler (kernel/time/tick-sched.c:1506) 
[ 9327.474097][ C3] ? __hrtimer_run_queues (./include/linux/timerqueue.h:25 kernel/time/hrtimer.c:1732) 
[ 9327.474377][ C3] ? __pfx___hrtimer_run_queues (kernel/time/hrtimer.c:1722) 
[ 9327.474675][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 9327.474948][ C3] ? ktime_get_update_offsets_now (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:2320 (discriminator 4)) 
[ 9327.475264][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1817) 
[ 9327.475533][ C3] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1065 arch/x86/kernel/apic/apic.c:1082) 
[ 9327.475852][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[ 9327.476159][    C3]  </IRQ>
[ 9327.476317][    C3]  <TASK>
[ 9327.476471][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 9327.476793][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9327.477097][ C3] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9327.477401][ C3] ? report_enabled (mm/kasan/report.c:132 mm/kasan/report.c:128) 
[ 9327.477649][ C3] kasan_report (mm/kasan/report.c:585) 
[ 9327.477876][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:98 kernel/locking/qspinlock.c:327) 
[ 9327.478172][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:317) 
[ 9327.478493][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 9327.478795][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9327.479052][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9327.479331][ C3] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) 
[ 9327.479627][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9327.479872][ C3] ? __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9327.480118][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 9327.480357][ C3] __mutex_lock (kernel/locking/mutex.c:152 kernel/locking/mutex.c:626 kernel/locking/mutex.c:752) 
[ 9327.480596][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 9327.480844][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9327.481151][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 9327.481414][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9327.481756][ C3] ? refcount_dec_not_one (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 lib/refcount.c:76) 
[ 9327.482031][ C3] ? __pfx_refcount_dec_not_one (lib/refcount.c:75) 
[ 9327.482333][ C3] ? refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9327.482636][ C3] refcount_dec_and_mutex_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 lib/refcount.c:119 lib/refcount.c:113) 
[ 9327.482931][ C3] __tcf_action_put (net/sched/act_api.c:377) 
[ 9327.483181][ C3] tcf_action_destroy (net/sched/act_api.c:413 net/sched/act_api.c:393 net/sched/act_api.c:1175) 
[ 9327.483439][ C3] tcf_exts_destroy (net/sched/cls_api.c:3312) 
[ 9327.483683][ C3] __basic_delete_filter (net/sched/cls_basic.c:92) cls_basic
[ 9327.484007][ C3] basic_destroy (net/sched/cls_basic.c:121) cls_basic
[ 9327.484307][ C3] ? __pfx_basic_destroy (net/sched/cls_basic.c:110) cls_basic
[ 9327.484631][ C3] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:907) 
[ 9327.484942][ C3] tcf_proto_destroy (net/sched/cls_api.c:418) 
[ 9327.485198][ C3] tcf_chain_flush (net/sched/cls_api.c:737) 
[ 9327.485451][ C3] __tcf_block_put (net/sched/cls_api.c:1070 net/sched/cls_api.c:1141 net/sched/cls_api.c:1305) 
[ 9327.485706][ C3] ingress_destroy (net/sched/sch_ingress.c:123) sch_ingress
[ 9327.486028][ C3] __qdisc_destroy (net/sched/sch_generic.c:1067) 
[ 9327.486272][ C3] dev_shutdown (net/sched/sch_generic.c:1482) 
[ 9327.486510][ C3] unregister_netdevice_many_notify (./include/net/tcx.h:168 net/core/dev.c:11084) 
[ 9327.486840][ C3] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 9327.487091][ C3] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) 
[ 9327.487441][ C3] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11019) 
[ 9327.487767][ C3] default_device_exit_batch (net/core/dev.c:11629) 
[ 9327.488059][ C3] ? __pfx_default_device_exit_batch (net/core/dev.c:11604) 
[ 9327.488378][ C3] ? ops_exit_list (net/core/net_namespace.c:169 (discriminator 3)) 
[ 9327.488625][ C3] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[ 9327.488858][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 9327.489148][ C3] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 9327.489408][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 9327.489653][ C3] ? process_one_work (kernel/workqueue.c:2609) 
[ 9327.489921][ C3] process_one_work (kernel/workqueue.c:2633) 
[ 9327.490181][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 9327.490417][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 9327.490701][ C3] ? assign_work (kernel/workqueue.c:1101) 
[ 9327.490941][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 9327.491188][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 9327.491528][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9327.491796][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 9327.492061][ C3] kthread (kernel/kthread.c:388) 
[ 9327.492276][ C3] ? __pfx_kthread (kernel/kthread.c:341) 
[ 9327.492515][ C3] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 9327.492748][ C3] ? __pfx_kthread (kernel/kthread.c:341) 


Finger prints:
dump_stack_lvl:print_report:kasan_report:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
__kasan_check_read:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
__kasan_check_read:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
__kasan_check_read:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
__asan_report_load4_noabort:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
__kasan_check_read:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
__kasan_check_read:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
kasan_report:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock:__mutex_lock
report_enabled:kasan_report:kasan_check_range:queued_spin_lock_slowpath
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock:_raw_spin_lock
report_enabled:kasan_report:queued_spin_lock_slowpath:do_raw_spin_lock