======================================
| [   20.597918][  T330] ==================================================================
| [   20.598257][  T330] BUG: KASAN: null-ptr-deref in try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
| [   20.598556][  T330] Write of size 8 at addr 0000000000000000 by task ip/330
| [   20.598791][  T330]
[   20.598899][  T330] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.598903][  T330] Call Trace:
[   20.598905][  T330]  <TASK>
[   20.598907][  T330]  dump_stack_lvl (lib/dump_stack.c:123)
[   20.598921][  T330]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   20.598924][  T330]  kasan_report (mm/kasan/report.c:597)
[   20.598932][  T330]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   20.598938][  T330]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   20.598942][  T330]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   20.598946][  T330]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   20.598950][  T330]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   20.598955][  T330]  ? qdisc_destroy (net/sched/sch_generic.c:1355)
[   20.598963][  T330]  __cancel_work_sync (kernel/workqueue.c:4383)
[   20.598967][  T330]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   20.598974][  T330]  ? netdev_notify_peers (net/core/dev.c:1891)
[   20.598978][  T330]  ? netif_close_many (net/core/dev.c:1959)
[   20.598982][  T330]  netif_close_many (net/core/dev.c:1959)
[   20.598985][  T330]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.598990][  T330]  ? __dev_close_many (net/core/dev.c:1949)
[   20.598993][  T330]  ? netif_close_many_and_unlock (net/core/dev.c:12476)
[   20.598998][  T330]  unregister_netdevice_many_notify (net/core/dev.c:12545)
[   20.599001][  T330]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.599007][  T330]  ? unregister_netdevice_many (net/core/dev.c:12441)
[   20.599009][  T330]  ? vrf_dellink (drivers/net/vrf.c:1676)
[   20.599016][  T330]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.599020][  T330]  ? dev_ingress_queue_create (net/core/dev.c:12499)
[   20.599024][  T330]  ? vrf_dellink (drivers/net/vrf.c:1667)
[   20.599027][  T330]  ? vrf_map_unregister_dev (drivers/net/vrf.c:1667)
[   20.599030][  T330]  ? __nla_validate_parse (./include/net/netlink.h:1307 (discriminator 1) lib/nlattr.c:622 (discriminator 1))
[   20.599040][  T330]  rtnl_dellink (net/core/rtnetlink.c:3530 net/core/rtnetlink.c:3570)
[   20.599045][  T330]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[   20.599065][  T330]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.599070][  T330]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.599075][  T330]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.599079][  T330]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   20.599082][  T330]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.599086][  T330]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[   20.599089][  T330]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   20.599094][  T330]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.599097][  T330]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.599103][  T330]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   20.599106][  T330]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.599110][  T330]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   20.599117][  T330]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   20.599119][  T330]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333)
[   20.599123][  T330]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   20.599127][  T330]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   20.599130][  T330]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.599135][  T330]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   20.599139][  T330]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.599142][  T330]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   20.599148][  T330]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.599152][  T330]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   20.599160][  T330]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   20.599164][  T330]  ? __copy_msghdr (net/socket.c:2556)
[   20.599175][  T330]  ___sys_sendmsg (net/socket.c:2686)
[   20.599179][  T330]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   20.599185][  T330]  ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3125)
[   20.599193][  T330]  ? copy_msghdr_from_user (net/socket.c:2673)
[   20.599201][  T330]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.599209][  T330]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.599218][  T330]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.599223][  T330]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   20.599232][  T330]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.599237][  T330]  __sys_sendmsg (net/socket.c:2716)
[   20.599240][  T330]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   20.599243][  T330]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   20.599250][  T330]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.599255][  T330]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   20.599261][  T330]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   20.599266][  T330] RIP: 0033:0x7fbfe0a3a1d7
[   20.599276][  T330] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   20.599279][  T330] RSP: 002b:00007ffd12fb7f08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.599286][  T330] RAX: ffffffffffffffda RBX: 00007ffd12fb8630 RCX: 00007fbfe0a3a1d7
[   20.599288][  T330] RDX: 0000000000000000 RSI: 00007ffd12fb7f70 RDI: 0000000000000005
[   20.599290][  T330] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078
[   20.599292][  T330] R10: 00007fbfe0936f60 R11: 0000000000000246 R12: 0000000000000001
[   20.599294][  T330] R13: 00000000691cd48c R14: 0000000000499600 R15: 0000000000000000
| [   20.616401][  T330] #PF: error_code(0x0002) - not-present page
| [   20.616638][  T330] PGD bad1067 P4D bad1067 PUD f824067 PMD 0
| [   20.616878][  T330] Oops: Oops: 0002 [#1] SMP KASAN
| [   20.617431][  T330] Tainted: [B]=BAD_PAGE
[   20.617577][  T330] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.617806][  T330] RIP: 0010:try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   20.618046][  T330] Code: 00 41 89 c0 b8 01 00 00 00 45 85 c0 74 0f 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 be 08 00 00 00 48 89 df e8 1f 93 82 00 <f0> 48 0f ba 2b 00 72 11 48 83 c4 10 31 c0 5b 5d 41 5c 41 5d 41 5e
All code
========
   0:	00 41 89             	add    %al,-0x77(%rcx)
   3:	c0 b8 01 00 00 00 45 	sarb   $0x45,0x1(%rax)
   a:	85 c0                	test   %eax,%eax
   c:	74 0f                	je     0x1d
   e:	48 83 c4 10          	add    $0x10,%rsp
  12:	5b                   	pop    %rbx
  13:	5d                   	pop    %rbp
  14:	41 5c                	pop    %r12
  16:	41 5d                	pop    %r13
  18:	41 5e                	pop    %r14
  1a:	41 5f                	pop    %r15
  1c:	c3                   	ret
  1d:	be 08 00 00 00       	mov    $0x8,%esi
  22:	48 89 df             	mov    %rbx,%rdi
  25:	e8 1f 93 82 00       	call   0x829349
  2a:*	f0 48 0f ba 2b 00    	lock btsq $0x0,(%rbx)		<-- trapping instruction
  30:	72 11                	jb     0x43
  32:	48 83 c4 10          	add    $0x10,%rsp
  36:	31 c0                	xor    %eax,%eax
  38:	5b                   	pop    %rbx
  39:	5d                   	pop    %rbp
  3a:	41 5c                	pop    %r12
  3c:	41 5d                	pop    %r13
  3e:	41 5e                	pop    %r14

Code starting with the faulting instruction
===========================================
   0:	f0 48 0f ba 2b 00    	lock btsq $0x0,(%rbx)
   6:	72 11                	jb     0x19
   8:	48 83 c4 10          	add    $0x10,%rsp
   c:	31 c0                	xor    %eax,%eax
   e:	5b                   	pop    %rbx
   f:	5d                   	pop    %rbp
  10:	41 5c                	pop    %r12
  12:	41 5d                	pop    %r13
  14:	41 5e                	pop    %r14
[   20.618694][  T330] RSP: 0018:ffffc90000dc6f08 EFLAGS: 00010046
[   20.618931][  T330] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa6249b8a
[   20.619204][  T330] RDX: fffffbfff55ecacd RSI: 0000000000000008 RDI: ffffffffaaf65660
[   20.619475][  T330] RBP: ffffc90000dc6f70 R08: 0000000000000001 R09: fffffbfff55ecacc
[   20.619749][  T330] R10: ffffffffaaf65667 R11: ffffc90000dc69c0 R12: 0000000000000000
[   20.620025][  T330] R13: 0000000000000282 R14: ffff888008ab9000 R15: dffffc0000000000
[   20.620298][  T330] FS:  00007fbfe086c800(0000) GS:ffff8880c2207000(0000) knlGS:0000000000000000
[   20.620617][  T330] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.620851][  T330] CR2: 0000000000000000 CR3: 000000000fb83006 CR4: 0000000000772ef0
[   20.621125][  T330] PKRU: 55555554
[   20.621268][  T330] Call Trace:
[   20.621408][  T330]  <TASK>
[   20.621507][  T330]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   20.621689][  T330]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   20.621985][  T330]  ? qdisc_destroy (net/sched/sch_generic.c:1355)
[   20.622167][  T330]  __cancel_work_sync (kernel/workqueue.c:4383)
[   20.622351][  T330]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   20.622536][  T330]  ? netdev_notify_peers (net/core/dev.c:1891)
[   20.622819][  T330]  ? netif_close_many (net/core/dev.c:1959)
[   20.623000][  T330]  netif_close_many (net/core/dev.c:1959)
[   20.623188][  T330]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.623368][  T330]  ? __dev_close_many (net/core/dev.c:1949)
[   20.623651][  T330]  ? netif_close_many_and_unlock (net/core/dev.c:12476)
[   20.623882][  T330]  unregister_netdevice_many_notify (net/core/dev.c:12545)
[   20.624108][  T330]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.624346][  T330]  ? unregister_netdevice_many (net/core/dev.c:12441)
[   20.624644][  T330]  ? vrf_dellink (drivers/net/vrf.c:1676)
[   20.624840][  T330]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.625037][  T330]  ? dev_ingress_queue_create (net/core/dev.c:12499)
[   20.625220][  T330]  ? vrf_dellink (drivers/net/vrf.c:1667)
[   20.625501][  T330]  ? vrf_map_unregister_dev (drivers/net/vrf.c:1667)
[   20.625688][  T330]  ? __nla_validate_parse (./include/net/netlink.h:1307 (discriminator 1) lib/nlattr.c:622 (discriminator 1))
[   20.625876][  T330]  rtnl_dellink (net/core/rtnetlink.c:3530 net/core/rtnetlink.c:3570)
[   20.626058][  T330]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[   20.626395][  T330]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.626587][  T330]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.626766][  T330]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.627047][  T330]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   20.627230][  T330]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.627409][  T330]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[   20.627641][  T330]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   20.627924][  T330]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.628105][  T330]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.628286][  T330]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   20.628468][  T330]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.628752][  T330]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   20.628937][  T330]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   20.629114][  T330]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333)
[   20.629293][  T330]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   20.629574][  T330]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   20.629753][  T330]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.629932][  T330]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   20.630114][  T330]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.630392][  T330]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   20.630582][  T330]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.630759][  T330]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   20.630940][  T330]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   20.631262][  T330]  ? __copy_msghdr (net/socket.c:2556)
[   20.631446][  T330]  ___sys_sendmsg (net/socket.c:2686)
[   20.631626][  T330]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   20.631810][  T330]  ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3125)
[   20.632133][  T330]  ? copy_msghdr_from_user (net/socket.c:2673)
[   20.632312][  T330]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.632497][  T330]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.632684][  T330]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.632965][  T330]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   20.633146][  T330]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.633341][  T330]  __sys_sendmsg (net/socket.c:2716)
[   20.633529][  T330]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   20.633857][  T330]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   20.634040][  T330]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.634220][  T330]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   20.634500][  T330]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   20.634727][  T330] RIP: 0033:0x7fbfe0a3a1d7
[   20.634919][  T330] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   20.635681][  T330] RSP: 002b:00007ffd12fb7f08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.635961][  T330] RAX: ffffffffffffffda RBX: 00007ffd12fb8630 RCX: 00007fbfe0a3a1d7
[   20.636331][  T330] RDX: 0000000000000000 RSI: 00007ffd12fb7f70 RDI: 0000000000000005
[   20.636607][  T330] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078
[   20.636881][  T330] R10: 00007fbfe0936f60 R11: 0000000000000246 R12: 0000000000000001


Finger prints:
kasan_report:kasan_check_range:try_to_grab_pending:__cancel_work:__cancel_work_sync
try_to_grab_pending:__cancel_work:__cancel_work_sync:__dev_close_many:netif_close_many