======================================
| [   21.351908][  T320] ==================================================================
| [   21.352304][  T320] 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)
| [   21.352655][  T320] Write of size 8 at addr 0000000000000000 by task ip/320
| [   21.352946][  T320]
[   21.353076][  T320] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.353079][  T320] Call Trace:
[   21.353082][  T320]  <TASK>
[   21.353084][  T320]  dump_stack_lvl (lib/dump_stack.c:123)
[   21.353092][  T320]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   21.353095][  T320]  kasan_report (mm/kasan/report.c:597)
[   21.353102][  T320]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   21.353107][  T320]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   21.353111][  T320]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   21.353116][  T320]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   21.353119][  T320]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   21.353124][  T320]  ? qdisc_destroy (net/sched/sch_generic.c:1355)
[   21.353130][  T320]  __cancel_work_sync (kernel/workqueue.c:4383)
[   21.353134][  T320]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   21.353142][  T320]  ? netdev_notify_peers (net/core/dev.c:1891)
[   21.353146][  T320]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   21.353152][  T320]  __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)
[   21.353156][  T320]  ? netif_set_allmulti (net/core/dev.c:9890)
[   21.353160][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.353168][  T320]  netif_change_flags (net/core/dev.c:9989)
[   21.353172][  T320]  dev_change_flags (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:69)
[   21.353176][  T320] cycle_netdev (drivers/net/vrf.c:1052) vrf
[   21.353184][  T320] vrf_add_slave (drivers/net/vrf.c:1083 drivers/net/vrf.c:1102) vrf
[   21.353189][  T320]  do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2964)
[   21.353194][  T320]  do_setlink.constprop.0 (net/core/rtnetlink.c:3165)
[   21.353199][  T320]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   21.353205][  T320]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.353211][  T320]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   21.353215][  T320]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   21.353220][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.353225][  T320]  ? __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)
[   21.353229][  T320]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   21.353232][  T320]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.353237][  T320]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.353240][  T320]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   21.353243][  T320]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   21.353249][  T320]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.353252][  T320]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   21.353255][  T320]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   21.353258][  T320]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   21.353263][  T320]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   21.353268][  T320]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   21.353273][  T320]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.353276][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.353282][  T320]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.353285][  T320]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   21.353288][  T320]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.353292][  T320]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.353295][  T320]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   21.353299][  T320]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   21.353301][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.353308][  T320]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   21.353312][  T320]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   21.353315][  T320]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   21.353322][  T320]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   21.353325][  T320]  ? 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)
[   21.353329][  T320]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   21.353333][  T320]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   21.353337][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.353342][  T320]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   21.353347][  T320]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   21.353350][  T320]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   21.353357][  T320]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   21.353360][  T320]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   21.353366][  T320]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   21.353369][  T320]  ? __copy_msghdr (net/socket.c:2556)
[   21.353377][  T320]  ___sys_sendmsg (net/socket.c:2686)
[   21.353380][  T320]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   21.353383][  T320]  ? __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)
[   21.353389][  T320]  ? copy_msghdr_from_user (net/socket.c:2673)
[   21.353393][  T320]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.353398][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.353404][  T320]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.353407][  T320]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   21.353413][  T320]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.353419][  T320]  __sys_sendmsg (net/socket.c:2716)
[   21.353422][  T320]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   21.353426][  T320]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   21.353433][  T320]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.353437][  T320]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   21.353444][  T320]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   21.353448][  T320] RIP: 0033:0x7f8611d4e1d7
[   21.353452][  T320] 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)
[   21.353455][  T320] RSP: 002b:00007ffedca1e6f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.353460][  T320] RAX: ffffffffffffffda RBX: 00007ffedca1ee20 RCX: 00007f8611d4e1d7
[   21.353462][  T320] RDX: 0000000000000000 RSI: 00007ffedca1e760 RDI: 0000000000000005
[   21.353464][  T320] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   21.353465][  T320] R10: 000000003e690910 R11: 0000000000000246 R12: 0000000000000003
[   21.353467][  T320] R13: 00000000691cc129 R14: 0000000000499600 R15: 0000000000000000
| [   21.378267][  T320] #PF: error_code(0x0002) - not-present page
| [   21.378540][  T320] PGD a114067 P4D a114067 PUD 9e47067 PMD 0
| [   21.378834][  T320] Oops: Oops: 0002 [#1] SMP KASAN
| [   21.379622][  T320] Tainted: [B]=BAD_PAGE
[   21.379793][  T320] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.380076][  T320] 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)
[   21.380485][  T320] 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
[   21.381263][  T320] RSP: 0018:ffffc90000676e70 EFLAGS: 00010046
[   21.381540][  T320] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa4c4090a
[   21.381879][  T320] RDX: fffffbfff51cf2cd RSI: 0000000000000008 RDI: ffffffffa8e79660
[   21.382206][  T320] RBP: ffffc90000676ed8 R08: 0000000000000001 R09: fffffbfff51cf2cc
[   21.382539][  T320] R10: ffffffffa8e79667 R11: ffffc90000676940 R12: 0000000000000000
[   21.382874][  T320] R13: 0000000000000282 R14: ffff8880080f9000 R15: dffffc0000000000
[   21.383445][  T320] FS:  00007f8611b80800(0000) GS:ffff88808d3f2000(0000) knlGS:0000000000000000
[   21.383830][  T320] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.384111][  T320] CR2: 0000000000000000 CR3: 000000000c5c4002 CR4: 0000000000772ef0
[   21.384448][  T320] PKRU: 55555554
[   21.384737][  T320] Call Trace:
[   21.384904][  T320]  <TASK>
[   21.385020][  T320]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   21.385242][  T320]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   21.385477][  T320]  ? qdisc_destroy (net/sched/sch_generic.c:1355)
[   21.385701][  T320]  __cancel_work_sync (kernel/workqueue.c:4383)
[   21.385918][  T320]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   21.386142][  T320]  ? netdev_notify_peers (net/core/dev.c:1891)
[   21.386359][  T320]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   21.386582][  T320]  __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)
[   21.386804][  T320]  ? netif_set_allmulti (net/core/dev.c:9890)
[   21.387258][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.387481][  T320]  netif_change_flags (net/core/dev.c:9989)
[   21.387702][  T320]  dev_change_flags (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:69)
[   21.388041][  T320] cycle_netdev (drivers/net/vrf.c:1052) vrf
[   21.388271][  T320] vrf_add_slave (drivers/net/vrf.c:1083 drivers/net/vrf.c:1102) vrf
[   21.388497][  T320]  do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2964)
[   21.388729][  T320]  do_setlink.constprop.0 (net/core/rtnetlink.c:3165)
[   21.388951][  T320]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   21.389170][  T320]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.389395][  T320]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   21.389616][  T320]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   21.389837][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.390059][  T320]  ? __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)
[   21.390281][  T320]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   21.390508][  T320]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.390736][  T320]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.390959][  T320]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   21.391172][  T320]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   21.391393][  T320]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.391613][  T320]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   21.391828][  T320]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   21.392051][  T320]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   21.392274][  T320]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   21.392491][  T320]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   21.392712][  T320]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.392932][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.393149][  T320]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.393365][  T320]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   21.393581][  T320]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.393799][  T320]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.394023][  T320]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   21.394240][  T320]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   21.394464][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.394693][  T320]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   21.394919][  T320]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   21.395135][  T320]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   21.395356][  T320]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   21.395572][  T320]  ? 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)
[   21.395794][  T320]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   21.396015][  T320]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   21.396236][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.396451][  T320]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   21.396670][  T320]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   21.396890][  T320]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   21.397114][  T320]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   21.397801][  T320]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   21.398024][  T320]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   21.398295][  T320]  ? __copy_msghdr (net/socket.c:2556)
[   21.398517][  T320]  ___sys_sendmsg (net/socket.c:2686)
[   21.398855][  T320]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   21.399076][  T320]  ? __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)
[   21.399355][  T320]  ? copy_msghdr_from_user (net/socket.c:2673)
[   21.399569][  T320]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.399787][  T320]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.400010][  T320]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.400219][  T320]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   21.400554][  T320]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.400779][  T320]  __sys_sendmsg (net/socket.c:2716)
[   21.400998][  T320]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   21.401282][  T320]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   21.401620][  T320]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.401837][  T320]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   21.402060][  T320]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   21.402337][  T320] RIP: 0033:0x7f8611d4e1d7
[   21.402561][  T320] 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)
[   21.403332][  T320] RSP: 002b:00007ffedca1e6f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.403657][  T320] RAX: ffffffffffffffda RBX: 00007ffedca1ee20 RCX: 00007f8611d4e1d7
[   21.403993][  T320] RDX: 0000000000000000 RSI: 00007ffedca1e760 RDI: 0000000000000005
[   21.404316][  T320] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   21.404647][  T320] R10: 000000003e690910 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