======================================
| [   34.993533][  T535] ==================================================================
| [   34.993859][  T535] 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)
| [   34.994168][  T535] Write of size 8 at addr 0000000000000000 by task ip/535
| [   34.994397][  T535]
[   34.994503][  T535] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   34.994508][  T535] Call Trace:
[   34.994512][  T535]  <TASK>
[   34.994514][  T535]  dump_stack_lvl (lib/dump_stack.c:123)
[   34.994531][  T535]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   34.994534][  T535]  kasan_report (mm/kasan/report.c:597)
[   34.994545][  T535]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   34.994551][  T535]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   34.994555][  T535]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   34.994560][  T535]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   34.994563][  T535]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   34.994567][  T535]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   34.994571][  T535]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   34.994580][  T535]  __cancel_work_sync (kernel/workqueue.c:4383)
[   34.994583][  T535]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   34.994598][  T535]  ? netdev_notify_peers (net/core/dev.c:1891)
[   34.994602][  T535]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   34.994611][  T535]  __dev_change_flags (./include/linux/list.h:119 ./include/linux/list.h:223 ./include/linux/list.h:237 net/core/dev.c:1945 net/core/dev.c:9924)
[   34.994617][  T535]  ? __free_zapped_classes (kernel/locking/lockdep.c:5343)
[   34.994624][  T535]  ? netif_set_allmulti (net/core/dev.c:9890)
[   34.994627][  T535]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   34.994633][  T535]  netif_change_flags (net/core/dev.c:9989)
[   34.994638][  T535]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[   34.994644][  T535]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   34.994650][  T535]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   34.994658][  T535]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   34.994666][  T535]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   34.994674][  T535]  ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113)
[   34.994680][  T535]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   34.994685][  T535]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   34.994693][  T535]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   34.994696][  T535]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   34.994699][  T535]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   34.994713][  T535]  ? __create_object (mm/kmemleak.c:786)
[   34.994720][  T535]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   34.994724][  T535]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   34.994727][  T535]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   34.994730][  T535]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   34.994740][  T535]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   34.994746][  T535]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   34.994751][  T535]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   34.994754][  T535]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   34.994760][  T535]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   34.994764][  T535]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   34.994766][  T535]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   34.994771][  T535]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   34.994774][  T535]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   34.994778][  T535]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   34.994781][  T535]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   34.994788][  T535]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   34.994796][  T535]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   34.994800][  T535]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   34.994807][  T535]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   34.994810][  T535]  ? 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)
[   34.994814][  T535]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   34.994818][  T535]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   34.994822][  T535]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   34.994827][  T535]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   34.994832][  T535]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   34.994836][  T535]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   34.994845][  T535]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   34.994849][  T535]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   34.994857][  T535]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   34.994860][  T535]  ? __copy_msghdr (net/socket.c:2556)
[   34.994868][  T535]  ___sys_sendmsg (net/socket.c:2686)
[   34.994871][  T535]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   34.994873][  T535]  ? __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)
[   34.994881][  T535]  ? copy_msghdr_from_user (net/socket.c:2673)
[   34.994886][  T535]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   34.994891][  T535]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   34.994897][  T535]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   34.994900][  T535]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   34.994911][  T535]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   34.994917][  T535]  __sys_sendmsg (net/socket.c:2716)
[   34.994921][  T535]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   34.994924][  T535]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   34.994932][  T535]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   34.994936][  T535]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   34.994943][  T535]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   34.994949][  T535] RIP: 0033:0x7fa8d558d1d7
[   34.994954][  T535] 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)
[   34.994957][  T535] RSP: 002b:00007fffa6ea7e28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   34.994963][  T535] RAX: ffffffffffffffda RBX: 00007fffa6ea8550 RCX: 00007fa8d558d1d7
[   34.994966][  T535] RDX: 0000000000000000 RSI: 00007fffa6ea7e90 RDI: 0000000000000005
[   34.994968][  T535] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   34.994969][  T535] R10: 00007fa8d5489f60 R11: 0000000000000246 R12: 0000000000000003
[   34.994971][  T535] R13: 00000000691ccd08 R14: 0000000000499600 R15: 0000000000000000
| [   35.013120][  T535] #PF: error_code(0x0002) - not-present page
| [   35.013332][  T535] PGD 14563067 P4D 14563067 PUD 14653067 PMD 0
| [   35.013660][  T535] Oops: Oops: 0002 [#1] SMP KASAN
| [   35.014198][  T535] Tainted: [B]=BAD_PAGE
[   35.014435][  T535] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   35.014657][  T535] 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)
[   35.014915][  T535] 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 7f 7f 81 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 7f 7f 81 00       	call   0x817fa9
  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
[   35.015648][  T535] RSP: 0018:ffffc90000da6f40 EFLAGS: 00010046
[   35.015877][  T535] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff86e4090a
[   35.016251][  T535] RDX: fffffbfff160f2cd RSI: 0000000000000008 RDI: ffffffff8b079660
[   35.016518][  T535] RBP: ffffc90000da6fa8 R08: 0000000000000001 R09: fffffbfff160f2cc
[   35.016888][  T535] R10: ffffffff8b079667 R11: ffffc90000da6a00 R12: 0000000000000000
[   35.017145][  T535] R13: 0000000000000282 R14: ffff888008b31000 R15: dffffc0000000000
[   35.017412][  T535] FS:  00007fa8d53bf800(0000) GS:ffff8880ab372000(0000) knlGS:0000000000000000
[   35.017840][  T535] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   35.018063][  T535] CR2: 0000000000000000 CR3: 00000000091b4002 CR4: 0000000000772ef0
[   35.018322][  T535] PKRU: 55555554
[   35.018564][  T535] Call Trace:
[   35.018708][  T535]  <TASK>
[   35.018802][  T535]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   35.019004][  T535]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   35.019185][  T535]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   35.019469][  T535]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   35.019647][  T535]  __cancel_work_sync (kernel/workqueue.c:4383)
[   35.019830][  T535]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   35.020005][  T535]  ? netdev_notify_peers (net/core/dev.c:1891)
[   35.020282][  T535]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   35.020455][  T535]  __dev_change_flags (./include/linux/list.h:119 ./include/linux/list.h:223 ./include/linux/list.h:237 net/core/dev.c:1945 net/core/dev.c:9924)
[   35.020632][  T535]  ? __free_zapped_classes (kernel/locking/lockdep.c:5343)
[   35.020813][  T535]  ? netif_set_allmulti (net/core/dev.c:9890)
[   35.021089][  T535]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   35.021261][  T535]  netif_change_flags (net/core/dev.c:9989)
[   35.021434][  T535]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[   35.021611][  T535]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   35.021901][  T535]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   35.022081][  T535]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   35.022253][  T535]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   35.022424][  T535]  ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113)
[   35.022715][  T535]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   35.022885][  T535]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   35.023059][  T535]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   35.023231][  T535]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   35.023508][  T535]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   35.023690][  T535]  ? __create_object (mm/kmemleak.c:786)
[   35.023863][  T535]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   35.024032][  T535]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   35.024306][  T535]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   35.024474][  T535]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   35.024646][  T535]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   35.024829][  T535]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   35.025107][  T535]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   35.025278][  T535]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   35.025451][  T535]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   35.025625][  T535]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   35.025910][  T535]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   35.026082][  T535]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   35.026252][  T535]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   35.026421][  T535]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   35.026721][  T535]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   35.026901][  T535]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   35.027074][  T535]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   35.027245][  T535]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   35.027531][  T535]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   35.027718][  T535]  ? 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)
[   35.027892][  T535]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   35.028064][  T535]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   35.028347][  T535]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   35.028527][  T535]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   35.028718][  T535]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   35.028891][  T535]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   35.029183][  T535]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   35.029355][  T535]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   35.029534][  T535]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   35.029761][  T535]  ? __copy_msghdr (net/socket.c:2556)
[   35.030044][  T535]  ___sys_sendmsg (net/socket.c:2686)
[   35.030214][  T535]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   35.030389][  T535]  ? __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)
[   35.030728][  T535]  ? copy_msghdr_from_user (net/socket.c:2673)
[   35.030905][  T535]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   35.031077][  T535]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   35.031250][  T535]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   35.031534][  T535]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   35.031717][  T535]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   35.031894][  T535]  __sys_sendmsg (net/socket.c:2716)
[   35.032062][  T535]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   35.032378][  T535]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   35.032560][  T535]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   35.032742][  T535]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   35.032918][  T535]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   35.033242][  T535] RIP: 0033:0x7fa8d558d1d7
[   35.033428][  T535] 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)
[   35.034177][  T535] RSP: 002b:00007fffa6ea7e28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   35.034465][  T535] RAX: ffffffffffffffda RBX: 00007fffa6ea8550 RCX: 00007fa8d558d1d7
[   35.034845][  T535] RDX: 0000000000000000 RSI: 00007fffa6ea7e90 RDI: 0000000000000005
[   35.035108][  T535] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   35.035370][  T535] R10: 00007fa8d5489f60 R11: 0000000000000246 R12: 0000000000000003


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