======================================
| [   21.967947][  T449] ==================================================================
| [   21.968289][  T449] 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)
| [   21.968595][  T449] Write of size 8 at addr 0000000000000000 by task ip/449
| [   21.968878][  T449]
[   21.968992][  T449] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.968994][  T449] Call Trace:
[   21.968996][  T449]  <TASK>
[   21.968998][  T449]  dump_stack_lvl (lib/dump_stack.c:123)
[   21.969005][  T449]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   21.969010][  T449]  kasan_report (mm/kasan/report.c:597)
[   21.969016][  T449]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   21.969021][  T449]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   21.969025][  T449]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   21.969030][  T449]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   21.969034][  T449]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   21.969038][  T449]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   21.969041][  T449]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   21.969053][  T449]  __cancel_work_sync (kernel/workqueue.c:4383)
[   21.969057][  T449]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   21.969062][  T449]  ? netdev_notify_peers (net/core/dev.c:1891)
[   21.969066][  T449]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   21.969072][  T449]  __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)
[   21.969076][  T449]  ? netif_set_allmulti (net/core/dev.c:9890)
[   21.969079][  T449]  ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 kernel/bpf/core.c:746)
[   21.969086][  T449]  netif_change_flags (net/core/dev.c:9989)
[   21.969089][  T449]  ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94)
[   21.969093][  T449]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[   21.969099][  T449]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   21.969105][  T449]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.969109][  T449]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   21.969118][  T449]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.969124][  T449]  ? __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)
[   21.969132][  T449]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   21.969135][  T449]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.969140][  T449]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.969143][  T449]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   21.969147][  T449]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   21.969152][  T449]  ? __create_object (mm/kmemleak.c:786)
[   21.969156][  T449]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.969159][  T449]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   21.969162][  T449]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   21.969167][  T449]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   21.969174][  T449]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   21.969184][  T449]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   21.969192][  T449]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.969196][  T449]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.969201][  T449]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.969205][  T449]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   21.969208][  T449]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.969212][  T449]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.969215][  T449]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   21.969220][  T449]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   21.969223][  T449]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.969229][  T449]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   21.969233][  T449]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   21.969237][  T449]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   21.969244][  T449]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   21.969247][  T449]  ? 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)
[   21.969250][  T449]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   21.969254][  T449]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   21.969258][  T449]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.969263][  T449]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   21.969267][  T449]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   21.969270][  T449]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   21.969276][  T449]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   21.969279][  T449]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   21.969283][  T449]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   21.969285][  T449]  ? __copy_msghdr (net/socket.c:2556)
[   21.969293][  T449]  ___sys_sendmsg (net/socket.c:2686)
[   21.969295][  T449]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   21.969299][  T449]  ? __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)
[   21.969303][  T449]  ? copy_msghdr_from_user (net/socket.c:2673)
[   21.969308][  T449]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.969313][  T449]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.969318][  T449]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.969321][  T449]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   21.969329][  T449]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.969335][  T449]  __sys_sendmsg (net/socket.c:2716)
[   21.969337][  T449]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   21.969340][  T449]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   21.969351][  T449]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.969357][  T449]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   21.969365][  T449]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   21.969369][  T449] RIP: 0033:0x7fe4ad0f61d7
[   21.969373][  T449] 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)
[   21.969376][  T449] RSP: 002b:00007ffdd1ee6c58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.969380][  T449] RAX: ffffffffffffffda RBX: 00007ffdd1ee7380 RCX: 00007fe4ad0f61d7
[   21.969385][  T449] RDX: 0000000000000000 RSI: 00007ffdd1ee6cc0 RDI: 0000000000000005
[   21.969387][  T449] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   21.969389][  T449] R10: 00007fe4acff2f60 R11: 0000000000000246 R12: 0000000000000003
[   21.969390][  T449] R13: 00000000691cc4e0 R14: 0000000000499600 R15: 0000000000000000
| [   21.988120][  T449] #PF: error_code(0x0002) - not-present page
| [   21.988355][  T449] PGD 110a2067 P4D 110a2067 PUD 1109b067 PMD 0
| [   21.988586][  T449] Oops: Oops: 0002 [#1] SMP KASAN
| [   21.989163][  T449] Tainted: [B]=BAD_PAGE
[   21.989304][  T449] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.989535][  T449] 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)
[   21.989782][  T449] 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
[   21.990439][  T449] RSP: 0018:ffffc90000f36f30 EFLAGS: 00010046
[   21.990673][  T449] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff94049b8a
[   21.990959][  T449] RDX: fffffbfff31acacd RSI: 0000000000000008 RDI: ffffffff98d65660
[   21.991236][  T449] RBP: ffffc90000f36f98 R08: 0000000000000001 R09: fffffbfff31acacc
[   21.991516][  T449] R10: ffffffff98d65667 R11: ffffc90000f36a00 R12: 0000000000000000
[   21.991792][  T449] R13: 0000000000000286 R14: ffff888006341000 R15: dffffc0000000000
[   21.992074][  T449] FS:  00007fe4acf28800(0000) GS:ffff8880d4307000(0000) knlGS:0000000000000000
[   21.992389][  T449] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.992619][  T449] CR2: 0000000000000000 CR3: 000000000d8a6005 CR4: 0000000000772ef0
[   21.992909][  T449] PKRU: 55555554
[   21.993058][  T449] Call Trace:
[   21.993194][  T449]  <TASK>
[   21.993291][  T449]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   21.993485][  T449]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   21.993668][  T449]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   21.993855][  T449]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   21.994051][  T449]  __cancel_work_sync (kernel/workqueue.c:4383)
[   21.994234][  T449]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   21.994420][  T449]  ? netdev_notify_peers (net/core/dev.c:1891)
[   21.994598][  T449]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   21.994787][  T449]  __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)
[   21.994970][  T449]  ? netif_set_allmulti (net/core/dev.c:9890)
[   21.995145][  T449]  ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 kernel/bpf/core.c:746)
[   21.995322][  T449]  netif_change_flags (net/core/dev.c:9989)
[   21.995508][  T449]  ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94)
[   21.995692][  T449]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[   21.995881][  T449]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   21.996073][  T449]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.996254][  T449]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   21.996443][  T449]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.996615][  T449]  ? __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)
[   21.996809][  T449]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   21.997007][  T449]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.997192][  T449]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.997367][  T449]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   21.997550][  T449]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   21.997733][  T449]  ? __create_object (mm/kmemleak.c:786)
[   21.997920][  T449]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.998107][  T449]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   21.998294][  T449]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   21.998490][  T449]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   21.998672][  T449]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   21.998866][  T449]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   21.999056][  T449]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.999235][  T449]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.999419][  T449]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.999599][  T449]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   21.999795][  T449]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.999989][  T449]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   22.000162][  T449]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   22.000341][  T449]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   22.000531][  T449]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   22.000711][  T449]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   22.000908][  T449]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   22.001095][  T449]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   22.001277][  T449]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   22.001467][  T449]  ? 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)
[   22.001646][  T449]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   22.001831][  T449]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   22.002020][  T449]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   22.002196][  T449]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   22.002371][  T449]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   22.002553][  T449]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   22.002741][  T449]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   22.002926][  T449]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   22.003115][  T449]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   22.003357][  T449]  ? __copy_msghdr (net/socket.c:2556)
[   22.003548][  T449]  ___sys_sendmsg (net/socket.c:2686)
[   22.003748][  T449]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   22.003940][  T449]  ? __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)
[   22.004169][  T449]  ? copy_msghdr_from_user (net/socket.c:2673)
[   22.004351][  T449]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   22.004536][  T449]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   22.004716][  T449]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   22.004913][  T449]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   22.005103][  T449]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   22.005281][  T449]  __sys_sendmsg (net/socket.c:2716)
[   22.005471][  T449]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   22.005692][  T449]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   22.005883][  T449]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   22.006074][  T449]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   22.006258][  T449]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   22.006487][  T449] RIP: 0033:0x7fe4ad0f61d7
[   22.006674][  T449] 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)
[   22.007344][  T449] RSP: 002b:00007ffdd1ee6c58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.007747][  T449] RAX: ffffffffffffffda RBX: 00007ffdd1ee7380 RCX: 00007fe4ad0f61d7
[   22.008034][  T449] RDX: 0000000000000000 RSI: 00007ffdd1ee6cc0 RDI: 0000000000000005
[   22.008334][  T449] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   22.008724][  T449] R10: 00007fe4acff2f60 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