======================================
| [   21.537629][  T305] ==================================================================
| [   21.538029][  T305] 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)
| [   21.538358][  T305] Write of size 8 at addr 0000000000000000 by task ip/305
| [   21.538609][  T305]
[   21.538721][  T305] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.538723][  T305] Call Trace:
[   21.538726][  T305]  <TASK>
[   21.538728][  T305]  dump_stack_lvl (lib/dump_stack.c:123)
[   21.538738][  T305]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   21.538742][  T305]  kasan_report (mm/kasan/report.c:597)
[   21.538751][  T305]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   21.538757][  T305]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   21.538761][  T305]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   21.538765][  T305]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   21.538769][  T305]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   21.538773][  T305]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   21.538777][  T305]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   21.538785][  T305]  __cancel_work_sync (kernel/workqueue.c:4383)
[   21.538789][  T305]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   21.538795][  T305]  ? netdev_notify_peers (net/core/dev.c:1891)
[   21.538799][  T305]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   21.538805][  T305]  __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)
[   21.538810][  T305]  ? netif_set_allmulti (net/core/dev.c:9890)
[   21.538814][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.538820][  T305]  netif_change_flags (net/core/dev.c:9989)
[   21.538825][  T305]  dev_change_flags (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:69)
[   21.538829][  T305]  cycle_netdev (drivers/net/vrf.c:1052)
[   21.538835][  T305]  vrf_add_slave (drivers/net/vrf.c:1083 drivers/net/vrf.c:1102)
[   21.538839][  T305]  do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2964)
[   21.538844][  T305]  ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94)
[   21.538848][  T305]  do_setlink.constprop.0 (net/core/rtnetlink.c:3165)
[   21.538854][  T305]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   21.538860][  T305]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.538865][  T305]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   21.538869][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.538874][  T305]  ? __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)
[   21.538878][  T305]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   21.538882][  T305]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.538886][  T305]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.538890][  T305]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   21.538894][  T305]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   21.538899][  T305]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.538902][  T305]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   21.538905][  T305]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   21.538909][  T305]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   21.538915][  T305]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   21.538921][  T305]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   21.538927][  T305]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.538930][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.538935][  T305]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.538939][  T305]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   21.538942][  T305]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.538946][  T305]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.538949][  T305]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   21.538954][  T305]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   21.538957][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.538963][  T305]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   21.538967][  T305]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   21.538971][  T305]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   21.538978][  T305]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   21.538981][  T305]  ? 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)
[   21.538984][  T305]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   21.538988][  T305]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   21.538992][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.538996][  T305]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   21.539000][  T305]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   21.539004][  T305]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   21.539009][  T305]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   21.539012][  T305]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   21.539016][  T305]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   21.539018][  T305]  ? __copy_msghdr (net/socket.c:2556)
[   21.539025][  T305]  ___sys_sendmsg (net/socket.c:2686)
[   21.539028][  T305]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   21.539031][  T305]  ? __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)
[   21.539035][  T305]  ? copy_msghdr_from_user (net/socket.c:2673)
[   21.539039][  T305]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.539044][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.539049][  T305]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.539053][  T305]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   21.539059][  T305]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.539064][  T305]  __sys_sendmsg (net/socket.c:2716)
[   21.539067][  T305]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   21.539072][  T305]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   21.539085][  T305]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.539092][  T305]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   21.539099][  T305]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   21.539103][  T305] RIP: 0033:0x7fe6713561d7
[   21.539108][  T305] 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)
[   21.539110][  T305] RSP: 002b:00007ffdb1c33768 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.539114][  T305] RAX: ffffffffffffffda RBX: 00007ffdb1c33ea0 RCX: 00007fe6713561d7
[   21.539116][  T305] RDX: 0000000000000000 RSI: 00007ffdb1c337d0 RDI: 0000000000000005
[   21.539118][  T305] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   21.539120][  T305] R10: 000000000cca0910 R11: 0000000000000246 R12: 0000000000000004
[   21.539122][  T305] R13: 00000000691ccf4d R14: 0000000000499600 R15: 0000000000000000
| [   21.560277][  T305] #PF: error_code(0x0002) - not-present page
| [   21.560515][  T305] PGD e057067 P4D e057067 PUD c81f067 PMD 0
| [   21.560775][  T305] Oops: Oops: 0002 [#1] SMP KASAN
| [   21.561387][  T305] Tainted: [B]=BAD_PAGE
[   21.561567][  T305] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.561851][  T305] 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)
[   21.562155][  T305] 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
[   21.562994][  T305] RSP: 0018:ffffc90000d96e60 EFLAGS: 00010046
[   21.563276][  T305] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff98e49b8a
[   21.563604][  T305] RDX: fffffbfff3b6cacd RSI: 0000000000000008 RDI: ffffffff9db65660
[   21.563942][  T305] RBP: ffffc90000d96ec8 R08: 0000000000000001 R09: fffffbfff3b6cacc
[   21.564298][  T305] R10: ffffffff9db65667 R11: ffffc90000d96940 R12: 0000000000000000
[   21.564625][  T305] R13: 0000000000000286 R14: ffff88800b6d4000 R15: dffffc0000000000
[   21.564987][  T305] FS:  00007fe671188800(0000) GS:ffff8880cf687000(0000) knlGS:0000000000000000
[   21.565376][  T305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.565657][  T305] CR2: 0000000000000000 CR3: 0000000009e66002 CR4: 0000000000772ef0
[   21.566006][  T305] PKRU: 55555554
[   21.566196][  T305] Call Trace:
[   21.566373][  T305]  <TASK>
[   21.566499][  T305]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   21.566727][  T305]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   21.566963][  T305]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   21.567204][  T305]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   21.567427][  T305]  __cancel_work_sync (kernel/workqueue.c:4383)
[   21.567666][  T305]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   21.567902][  T305]  ? netdev_notify_peers (net/core/dev.c:1891)
[   21.568130][  T305]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   21.568413][  T305]  __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)
[   21.568609][  T305]  ? netif_set_allmulti (net/core/dev.c:9890)
[   21.568844][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.569037][  T305]  netif_change_flags (net/core/dev.c:9989)
[   21.569240][  T305]  dev_change_flags (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:69)
[   21.569536][  T305]  cycle_netdev (drivers/net/vrf.c:1052)
[   21.569678][  T305]  vrf_add_slave (drivers/net/vrf.c:1083 drivers/net/vrf.c:1102)
[   21.569886][  T305]  do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2964)
[   21.570074][  T305]  ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94)
[   21.570272][  T305]  do_setlink.constprop.0 (net/core/rtnetlink.c:3165)
[   21.570464][  T305]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   21.570655][  T305]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.570867][  T305]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   21.571055][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.571247][  T305]  ? __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)
[   21.571433][  T305]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   21.571613][  T305]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.571820][  T305]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.572014][  T305]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   21.572212][  T305]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   21.572397][  T305]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.572594][  T305]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   21.572798][  T305]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   21.572989][  T305]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   21.573186][  T305]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   21.573379][  T305]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   21.573566][  T305]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.573762][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.573964][  T305]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.574156][  T305]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   21.574341][  T305]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.574525][  T305]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.574711][  T305]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   21.574917][  T305]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   21.575121][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.575312][  T305]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   21.575628][  T305]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   21.575818][  T305]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   21.576011][  T305]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   21.576200][  T305]  ? 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)
[   21.576494][  T305]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   21.576682][  T305]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   21.576889][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.577124][  T305]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   21.577420][  T305]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   21.577598][  T305]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   21.577802][  T305]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   21.577989][  T305]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   21.578313][  T305]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   21.578542][  T305]  ? __copy_msghdr (net/socket.c:2556)
[   21.578745][  T305]  ___sys_sendmsg (net/socket.c:2686)
[   21.579076][  T305]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   21.579270][  T305]  ? __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)
[   21.579510][  T305]  ? copy_msghdr_from_user (net/socket.c:2673)
[   21.579705][  T305]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.580029][  T305]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.580235][  T305]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.580454][  T305]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   21.580633][  T305]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.580958][  T305]  __sys_sendmsg (net/socket.c:2716)
[   21.581168][  T305]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   21.581388][  T305]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   21.581581][  T305]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.581939][  T305]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   21.582144][  T305]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   21.582366][  T305] RIP: 0033:0x7fe6713561d7
[   21.582561][  T305] 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)
[   21.583448][  T305] RSP: 002b:00007ffdb1c33768 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.583871][  T305] RAX: ffffffffffffffda RBX: 00007ffdb1c33ea0 RCX: 00007fe6713561d7
[   21.584168][  T305] RDX: 0000000000000000 RSI: 00007ffdb1c337d0 RDI: 0000000000000005
[   21.584443][  T305] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   21.584867][  T305] R10: 000000000cca0910 R11: 0000000000000246 R12: 0000000000000004


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