======================================
| [  457.619522][ T1992] ==================================================================
| [  457.619903][ T1992] 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)
| [  457.620260][ T1992] Write of size 8 at addr 0000000000000000 by task ip/1992
| [  457.620548][ T1992]
[  457.620686][ T1992] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  457.620690][ T1992] Call Trace:
[  457.620695][ T1992]  <TASK>
[  457.620698][ T1992]  dump_stack_lvl (lib/dump_stack.c:123)
[  457.620709][ T1992]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  457.620713][ T1992]  kasan_report (mm/kasan/report.c:597)
[  457.620720][ T1992]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  457.620725][ T1992]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[  457.620729][ T1992]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  457.620732][ T1992]  ? __queue_work (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 kernel/workqueue.c:2350)
[  457.620736][ T1992]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  457.620739][ T1992]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  457.620743][ T1992]  ? queue_delayed_work_on (kernel/workqueue.c:2565 (discriminator 1))
[  457.620746][ T1992]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  457.620753][ T1992]  __cancel_work_sync (kernel/workqueue.c:4383)
[  457.620757][ T1992]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  457.620765][ T1992]  ? netdev_notify_peers (net/core/dev.c:1891)
[  457.620770][ T1992]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  457.620775][ T1992]  __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)
[  457.620778][ T1992]  ? find_held_lock (kernel/locking/lockdep.c:5343)
[  457.620785][ T1992]  ? netif_set_allmulti (net/core/dev.c:9890)
[  457.620787][ T1992]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  457.620794][ T1992]  netif_change_flags (net/core/dev.c:9989)
[  457.620798][ T1992]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[  457.620804][ T1992]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  457.620810][ T1992]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  457.620817][ T1992]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  457.620823][ T1992]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  457.620828][ T1992]  ? __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)
[  457.620832][ T1992]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  457.620835][ T1992]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  457.620840][ T1992]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  457.620843][ T1992]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  457.620846][ T1992]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  457.620851][ T1992]  ? __create_object (mm/kmemleak.c:786)
[  457.620856][ T1992]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  457.620860][ T1992]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  457.620863][ T1992]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  457.620866][ T1992]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  457.620873][ T1992]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  457.620878][ T1992]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  457.620883][ T1992]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  457.620886][ T1992]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  457.620892][ T1992]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  457.620895][ T1992]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  457.620900][ T1992]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  457.620904][ T1992]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  457.620907][ T1992]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  457.620911][ T1992]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  457.620914][ T1992]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  457.620921][ T1992]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  457.620927][ T1992]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  457.620931][ T1992]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  457.620938][ T1992]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  457.620940][ T1992]  ? 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)
[  457.620944][ T1992]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  457.620949][ T1992]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  457.620952][ T1992]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  457.620958][ T1992]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  457.620962][ T1992]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  457.620966][ T1992]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  457.620978][ T1992]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  457.620981][ T1992]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  457.620988][ T1992]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  457.620991][ T1992]  ? __copy_msghdr (net/socket.c:2556)
[  457.621002][ T1992]  ___sys_sendmsg (net/socket.c:2686)
[  457.621006][ T1992]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  457.621010][ T1992]  ? __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)
[  457.621017][ T1992]  ? copy_msghdr_from_user (net/socket.c:2673)
[  457.621023][ T1992]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  457.621027][ T1992]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  457.621033][ T1992]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  457.621037][ T1992]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  457.621047][ T1992]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  457.621054][ T1992]  __sys_sendmsg (net/socket.c:2716)
[  457.621057][ T1992]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  457.621061][ T1992]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  457.621068][ T1992]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  457.621072][ T1992]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  457.621078][ T1992]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  457.621083][ T1992] RIP: 0033:0x7f7be6abb1d7
[  457.621088][ T1992] 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)
[  457.621091][ T1992] RSP: 002b:00007fff6c124328 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  457.621096][ T1992] RAX: ffffffffffffffda RBX: 00007fff6c124a50 RCX: 00007f7be6abb1d7
[  457.621098][ T1992] RDX: 0000000000000000 RSI: 00007fff6c124390 RDI: 0000000000000005
[  457.621100][ T1992] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  457.621102][ T1992] R10: 00007f7be69b7f60 R11: 0000000000000246 R12: 0000000000000003
[  457.621104][ T1992] R13: 00000000691cd15f R14: 0000000000499600 R15: 0000000000000000
| [  457.640381][ T1992] #PF: error_code(0x0002) - not-present page
| [  457.640594][ T1992] PGD 7605067 P4D 7605067 PUD c5e9067 PMD 0
| [  457.640838][ T1992] Oops: Oops: 0002 [#1] SMP KASAN
| [  457.641384][ T1992] Tainted: [B]=BAD_PAGE
[  457.641521][ T1992] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  457.641768][ T1992] 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)
[  457.642008][ T1992] 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
[  457.642637][ T1992] RSP: 0018:ffffc900018f6f40 EFLAGS: 00010046
[  457.642864][ T1992] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffb984090a
[  457.643146][ T1992] RDX: fffffbfff7b4f2cd RSI: 0000000000000008 RDI: ffffffffbda79660
[  457.643421][ T1992] RBP: ffffc900018f6fa8 R08: 0000000000000001 R09: fffffbfff7b4f2cc
[  457.643677][ T1992] R10: ffffffffbda79667 R11: ffffc900018f6a00 R12: 0000000000000000
[  457.643950][ T1992] R13: 0000000000000282 R14: ffff888008df4000 R15: dffffc0000000000
[  457.644213][ T1992] FS:  00007f7be68ed800(0000) GS:ffff8880788f2000(0000) knlGS:0000000000000000
[  457.644530][ T1992] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  457.644745][ T1992] CR2: 0000000000000000 CR3: 0000000005af4004 CR4: 0000000000772ef0
[  457.645009][ T1992] PKRU: 55555554
[  457.645150][ T1992] Call Trace:
[  457.645281][ T1992]  <TASK>
[  457.645381][ T1992]  ? __queue_work (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 kernel/workqueue.c:2350)
[  457.645561][ T1992]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  457.645736][ T1992]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  457.645910][ T1992]  ? queue_delayed_work_on (kernel/workqueue.c:2565 (discriminator 1))
[  457.646092][ T1992]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  457.646266][ T1992]  __cancel_work_sync (kernel/workqueue.c:4383)
[  457.646465][ T1992]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  457.646639][ T1992]  ? netdev_notify_peers (net/core/dev.c:1891)
[  457.646811][ T1992]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  457.647000][ T1992]  __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)
[  457.647179][ T1992]  ? find_held_lock (kernel/locking/lockdep.c:5343)
[  457.647368][ T1992]  ? netif_set_allmulti (net/core/dev.c:9890)
[  457.647539][ T1992]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  457.647729][ T1992]  netif_change_flags (net/core/dev.c:9989)
[  457.647928][ T1992]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[  457.648116][ T1992]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  457.648300][ T1992]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  457.648485][ T1992]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  457.648659][ T1992]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  457.648830][ T1992]  ? __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)
[  457.649082][ T1992]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  457.649266][ T1992]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  457.649458][ T1992]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  457.649628][ T1992]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  457.649799][ T1992]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  457.649981][ T1992]  ? __create_object (mm/kmemleak.c:786)
[  457.650165][ T1992]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  457.650351][ T1992]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  457.650531][ T1992]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  457.650702][ T1992]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  457.650874][ T1992]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  457.651070][ T1992]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  457.651242][ T1992]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  457.651425][ T1992]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  457.651598][ T1992]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  457.651769][ T1992]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  457.651956][ T1992]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  457.652144][ T1992]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  457.652330][ T1992]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  457.652505][ T1992]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  457.652674][ T1992]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  457.652845][ T1992]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  457.653035][ T1992]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  457.653208][ T1992]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  457.653402][ T1992]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  457.653570][ T1992]  ? 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)
[  457.653752][ T1992]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  457.653932][ T1992]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  457.654115][ T1992]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  457.654298][ T1992]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  457.654484][ T1992]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  457.654780][ T1992]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  457.654977][ T1992]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  457.655156][ T1992]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  457.655341][ T1992]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  457.655670][ T1992]  ? __copy_msghdr (net/socket.c:2556)
[  457.655845][ T1992]  ___sys_sendmsg (net/socket.c:2686)
[  457.656028][ T1992]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  457.656202][ T1992]  ? __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)
[  457.656545][ T1992]  ? copy_msghdr_from_user (net/socket.c:2673)
[  457.656728][ T1992]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  457.656908][ T1992]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  457.657104][ T1992]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  457.657395][ T1992]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  457.657566][ T1992]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  457.657768][ T1992]  __sys_sendmsg (net/socket.c:2716)
[  457.657951][ T1992]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  457.658191][ T1992]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  457.658384][ T1992]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  457.658554][ T1992]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  457.658734][ T1992]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  457.659080][ T1992] RIP: 0033:0x7f7be6abb1d7
[  457.659268][ T1992] 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)
[  457.660030][ T1992] RSP: 002b:00007fff6c124328 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  457.660300][ T1992] RAX: ffffffffffffffda RBX: 00007fff6c124a50 RCX: 00007f7be6abb1d7
[  457.660712][ T1992] RDX: 0000000000000000 RSI: 00007fff6c124390 RDI: 0000000000000005
[  457.661053][ T1992] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  457.661340][ T1992] R10: 00007f7be69b7f60 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