======================================
| [   47.222932][  T440] ==================================================================
| [   47.223410][  T440] 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)
| [   47.223757][  T440] Write of size 8 at addr 0000000000000000 by task ip/440
| [   47.224043][  T440]
[   47.224168][  T440] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.224171][  T440] Call Trace:
[   47.224173][  T440]  <TASK>
[   47.224175][  T440]  dump_stack_lvl (lib/dump_stack.c:123)
[   47.224191][  T440]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   47.224195][  T440]  kasan_report (mm/kasan/report.c:597)
[   47.224203][  T440]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   47.224209][  T440]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   47.224212][  T440]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   47.224217][  T440]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   47.224221][  T440]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   47.224224][  T440]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   47.224230][  T440]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   47.224239][  T440]  __cancel_work_sync (kernel/workqueue.c:4383)
[   47.224244][  T440]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   47.224253][  T440]  ? netdev_notify_peers (net/core/dev.c:1891)
[   47.224258][  T440]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   47.224263][  T440]  __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)
[   47.224267][  T440]  ? __free_zapped_classes (kernel/locking/lockdep.c:5343)
[   47.224277][  T440]  ? netif_set_allmulti (net/core/dev.c:9890)
[   47.224279][  T440]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   47.224286][  T440]  netif_change_flags (net/core/dev.c:9989)
[   47.224291][  T440]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[   47.224298][  T440]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   47.224303][  T440]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   47.224312][  T440]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   47.224318][  T440]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   47.224323][  T440]  ? __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)
[   47.224327][  T440]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   47.224330][  T440]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   47.224337][  T440]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   47.224340][  T440]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   47.224344][  T440]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   47.224356][  T440]  ? __create_object (mm/kmemleak.c:786)
[   47.224362][  T440]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   47.224366][  T440]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   47.224369][  T440]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   47.224373][  T440]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   47.224380][  T440]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   47.224390][  T440]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   47.224398][  T440]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   47.224404][  T440]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   47.224415][  T440]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   47.224422][  T440]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   47.224427][  T440]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   47.224434][  T440]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   47.224437][  T440]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   47.224441][  T440]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   47.224444][  T440]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   47.224451][  T440]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   47.224457][  T440]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   47.224460][  T440]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   47.224468][  T440]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   47.224471][  T440]  ? 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)
[   47.224475][  T440]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   47.224479][  T440]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   47.224483][  T440]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   47.224489][  T440]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   47.224494][  T440]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   47.224498][  T440]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   47.224510][  T440]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   47.224513][  T440]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   47.224521][  T440]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   47.224524][  T440]  ? __copy_msghdr (net/socket.c:2556)
[   47.224532][  T440]  ___sys_sendmsg (net/socket.c:2686)
[   47.224535][  T440]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   47.224539][  T440]  ? __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)
[   47.224547][  T440]  ? copy_msghdr_from_user (net/socket.c:2673)
[   47.224552][  T440]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   47.224557][  T440]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   47.224563][  T440]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   47.224566][  T440]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   47.224577][  T440]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   47.224584][  T440]  __sys_sendmsg (net/socket.c:2716)
[   47.224587][  T440]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   47.224591][  T440]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   47.224599][  T440]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   47.224603][  T440]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   47.224611][  T440]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   47.224616][  T440] RIP: 0033:0x7f976b4d21d7
[   47.224621][  T440] 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)
[   47.224624][  T440] RSP: 002b:00007ffcc43e10b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   47.224628][  T440] RAX: ffffffffffffffda RBX: 00007ffcc43e17e0 RCX: 00007f976b4d21d7
[   47.224630][  T440] RDX: 0000000000000000 RSI: 00007ffcc43e1120 RDI: 0000000000000005
[   47.224632][  T440] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   47.224634][  T440] R10: 00007f976b3cef60 R11: 0000000000000246 R12: 0000000000000003
[   47.224636][  T440] R13: 00000000691cc99d R14: 0000000000499600 R15: 0000000000000000
| [   47.244268][  T440] #PF: error_code(0x0002) - not-present page
| [   47.244478][  T440] PGD 9528067 P4D 9528067 PUD a475067 PMD 0
| [   47.244806][  T440] Oops: Oops: 0002 [#1] SMP KASAN
| [   47.245345][  T440] Tainted: [B]=BAD_PAGE
[   47.245586][  T440] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.245804][  T440] 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)
[   47.246028][  T440] 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
[   47.246766][  T440] RSP: 0018:ffffc900005d6f40 EFLAGS: 00010046
[   47.246985][  T440] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff9cc4090a
[   47.247244][  T440] RDX: fffffbfff41cf2cd RSI: 0000000000000008 RDI: ffffffffa0e79660
[   47.247502][  T440] RBP: ffffc900005d6fa8 R08: 0000000000000001 R09: fffffbfff41cf2cc
[   47.247770][  T440] R10: ffffffffa0e79667 R11: ffffc900005d6a00 R12: 0000000000000000
[   47.248147][  T440] R13: 0000000000000282 R14: ffff888001e3c000 R15: dffffc0000000000
[   47.248410][  T440] FS:  00007f976b304800(0000) GS:ffff88808f972000(0000) knlGS:0000000000000000
[   47.248821][  T440] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.249035][  T440] CR2: 0000000000000000 CR3: 0000000008c4e003 CR4: 0000000000772ef0
[   47.249305][  T440] PKRU: 55555554
[   47.249539][  T440] Call Trace:
[   47.249680][  T440]  <TASK>
[   47.249774][  T440]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   47.249948][  T440]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   47.250122][  T440]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   47.250419][  T440]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   47.250593][  T440]  __cancel_work_sync (kernel/workqueue.c:4383)
[   47.250768][  T440]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   47.250941][  T440]  ? netdev_notify_peers (net/core/dev.c:1891)
[   47.251215][  T440]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   47.251419][  T440]  __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)
[   47.251606][  T440]  ? __free_zapped_classes (kernel/locking/lockdep.c:5343)
[   47.251779][  T440]  ? netif_set_allmulti (net/core/dev.c:9890)
[   47.252055][  T440]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   47.252237][  T440]  netif_change_flags (net/core/dev.c:9989)
[   47.252415][  T440]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[   47.252587][  T440]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   47.252863][  T440]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   47.253036][  T440]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   47.253215][  T440]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   47.253396][  T440]  ? __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)
[   47.253681][  T440]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   47.253851][  T440]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   47.254030][  T440]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   47.254203][  T440]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   47.254496][  T440]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   47.254669][  T440]  ? __create_object (mm/kmemleak.c:786)
[   47.254840][  T440]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   47.255014][  T440]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   47.255197][  T440]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   47.255380][  T440]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   47.255557][  T440]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   47.255727][  T440]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   47.256008][  T440]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   47.256185][  T440]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   47.256413][  T440]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   47.256582][  T440]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   47.256866][  T440]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   47.257037][  T440]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   47.257207][  T440]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   47.257385][  T440]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   47.257658][  T440]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   47.257859][  T440]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   47.258031][  T440]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   47.258202][  T440]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   47.258492][  T440]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   47.258662][  T440]  ? 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)
[   47.258831][  T440]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   47.259007][  T440]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   47.259186][  T440]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   47.259372][  T440]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   47.259561][  T440]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   47.259753][  T440]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   47.260051][  T440]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   47.260219][  T440]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   47.260396][  T440]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   47.260628][  T440]  ? __copy_msghdr (net/socket.c:2556)
[   47.260904][  T440]  ___sys_sendmsg (net/socket.c:2686)
[   47.261081][  T440]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   47.261251][  T440]  ? __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)
[   47.261482][  T440]  ? copy_msghdr_from_user (net/socket.c:2673)
[   47.261774][  T440]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   47.261948][  T440]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   47.262121][  T440]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   47.262294][  T440]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   47.262573][  T440]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   47.262744][  T440]  __sys_sendmsg (net/socket.c:2716)
[   47.262928][  T440]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   47.263145][  T440]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   47.263321][  T440]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   47.263493][  T440]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   47.263665][  T440]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   47.263987][  T440] RIP: 0033:0x7f976b4d21d7
[   47.264167][  T440] 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)
[   47.264896][  T440] RSP: 002b:00007ffcc43e10b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   47.265162][  T440] RAX: ffffffffffffffda RBX: 00007ffcc43e17e0 RCX: 00007f976b4d21d7
[   47.265425][  T440] RDX: 0000000000000000 RSI: 00007ffcc43e1120 RDI: 0000000000000005
[   47.265787][  T440] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   47.266043][  T440] R10: 00007f976b3cef60 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