======================================
| [   20.863841][  T331] ==================================================================
| [   20.864170][  T331] 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)
| [   20.864478][  T331] Write of size 8 at addr 0000000000000000 by task ip/331
| [   20.864728][  T331]
[   20.864834][  T331] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.864836][  T331] Call Trace:
[   20.864838][  T331]  <TASK>
[   20.864840][  T331]  dump_stack_lvl (lib/dump_stack.c:123)
[   20.864847][  T331]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   20.864850][  T331]  kasan_report (mm/kasan/report.c:597)
[   20.864855][  T331]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   20.864860][  T331]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   20.864864][  T331]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   20.864869][  T331]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   20.864872][  T331]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   20.864876][  T331]  ? qdisc_destroy (net/sched/sch_generic.c:1355)
[   20.864881][  T331]  __cancel_work_sync (kernel/workqueue.c:4383)
[   20.864885][  T331]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   20.864891][  T331]  ? netdev_notify_peers (net/core/dev.c:1891)
[   20.864896][  T331]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   20.864901][  T331]  __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)
[   20.864905][  T331]  ? netif_set_allmulti (net/core/dev.c:9890)
[   20.864909][  T331]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.864915][  T331]  netif_change_flags (net/core/dev.c:9989)
[   20.864920][  T331]  dev_change_flags (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:69)
[   20.864924][  T331] cycle_netdev (drivers/net/vrf.c:1052) vrf
[   20.864931][  T331] vrf_add_slave (drivers/net/vrf.c:1083 drivers/net/vrf.c:1102) vrf
[   20.864937][  T331]  do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2964)
[   20.864941][  T331]  do_setlink.constprop.0 (net/core/rtnetlink.c:3165)
[   20.864946][  T331]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   20.864952][  T331]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.864957][  T331]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   20.864962][  T331]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.864968][  T331]  ? __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)
[   20.864971][  T331]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   20.864974][  T331]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.864979][  T331]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.864982][  T331]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   20.864985][  T331]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   20.864990][  T331]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.864993][  T331]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   20.864996][  T331]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   20.864999][  T331]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   20.865003][  T331]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   20.865009][  T331]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   20.865014][  T331]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   20.865017][  T331]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.865023][  T331]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.865027][  T331]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   20.865029][  T331]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.865034][  T331]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   20.865037][  T331]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   20.865041][  T331]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.865043][  T331]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.865050][  T331]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   20.865054][  T331]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.865057][  T331]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   20.865064][  T331]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   20.865067][  T331]  ? 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)
[   20.865071][  T331]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   20.865075][  T331]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   20.865079][  T331]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.865085][  T331]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   20.865089][  T331]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.865093][  T331]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   20.865098][  T331]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.865101][  T331]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   20.865106][  T331]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   20.865109][  T331]  ? __copy_msghdr (net/socket.c:2556)
[   20.865116][  T331]  ___sys_sendmsg (net/socket.c:2686)
[   20.865119][  T331]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   20.865122][  T331]  ? __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)
[   20.865127][  T331]  ? copy_msghdr_from_user (net/socket.c:2673)
[   20.865132][  T331]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.865137][  T331]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.865143][  T331]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.865146][  T331]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   20.865150][  T331]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.865156][  T331]  __sys_sendmsg (net/socket.c:2716)
[   20.865159][  T331]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   20.865163][  T331]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   20.865171][  T331]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.865175][  T331]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   20.865179][  T331]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   20.865183][  T331] RIP: 0033:0x7fc4538381d7
[   20.865187][  T331] 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)
[   20.865190][  T331] RSP: 002b:00007fff20cd1628 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.865194][  T331] RAX: ffffffffffffffda RBX: 00007fff20cd1d50 RCX: 00007fc4538381d7
[   20.865196][  T331] RDX: 0000000000000000 RSI: 00007fff20cd1690 RDI: 0000000000000005
[   20.865198][  T331] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.865200][  T331] R10: 0000000010e7d910 R11: 0000000000000246 R12: 0000000000000004
[   20.865201][  T331] R13: 00000000691cb772 R14: 0000000000499600 R15: 0000000000000000
| [   20.884575][  T331] #PF: error_code(0x0002) - not-present page
| [   20.884809][  T331] PGD 14946067 P4D 14946067 PUD 14bac067 PMD 0
| [   20.885044][  T331] Oops: Oops: 0002 [#1] SMP KASAN
| [   20.885633][  T331] Tainted: [B]=BAD_PAGE
[   20.885774][  T331] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.886003][  T331] 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)
[   20.886242][  T331] 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
[   20.886904][  T331] RSP: 0018:ffffc900006a6e70 EFLAGS: 00010046
[   20.887140][  T331] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81c4090a
[   20.887417][  T331] RDX: fffffbfff0bcf2cd RSI: 0000000000000008 RDI: ffffffff85e79660
[   20.887691][  T331] RBP: ffffc900006a6ed8 R08: 0000000000000001 R09: fffffbfff0bcf2cc
[   20.887982][  T331] R10: ffffffff85e79667 R11: ffffc900006a6940 R12: 0000000000000000
[   20.888260][  T331] R13: 0000000000000282 R14: ffff88800f2b4000 R15: dffffc0000000000
[   20.888537][  T331] FS:  00007fc45366a800(0000) GS:ffff8880b0472000(0000) knlGS:0000000000000000
[   20.888856][  T331] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.889103][  T331] CR2: 0000000000000000 CR3: 000000001493e002 CR4: 0000000000772ef0
[   20.889379][  T331] PKRU: 55555554
[   20.889532][  T331] Call Trace:
[   20.889672][  T331]  <TASK>
[   20.889777][  T331]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   20.889964][  T331]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   20.890150][  T331]  ? qdisc_destroy (net/sched/sch_generic.c:1355)
[   20.890337][  T331]  __cancel_work_sync (kernel/workqueue.c:4383)
[   20.890534][  T331]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   20.890734][  T331]  ? netdev_notify_peers (net/core/dev.c:1891)
[   20.890921][  T331]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   20.891106][  T331]  __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)
[   20.891306][  T331]  ? netif_set_allmulti (net/core/dev.c:9890)
[   20.891488][  T331]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.891675][  T331]  netif_change_flags (net/core/dev.c:9989)
[   20.891869][  T331]  dev_change_flags (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:69)
[   20.892054][  T331] cycle_netdev (drivers/net/vrf.c:1052) vrf
[   20.892253][  T331] vrf_add_slave (drivers/net/vrf.c:1083 drivers/net/vrf.c:1102) vrf
[   20.892441][  T331]  do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2964)
[   20.892645][  T331]  do_setlink.constprop.0 (net/core/rtnetlink.c:3165)
[   20.892834][  T331]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   20.893034][  T331]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.893220][  T331]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   20.893420][  T331]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.893622][  T331]  ? __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)
[   20.893808][  T331]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   20.893994][  T331]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.894179][  T331]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.894377][  T331]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   20.894563][  T331]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   20.894757][  T331]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.894943][  T331]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   20.895129][  T331]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   20.895314][  T331]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   20.895500][  T331]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   20.895686][  T331]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   20.895868][  T331]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   20.896049][  T331]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.896243][  T331]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.896430][  T331]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   20.896613][  T331]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.896800][  T331]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   20.896983][  T331]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   20.897167][  T331]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.897350][  T331]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.897549][  T331]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   20.897752][  T331]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.897937][  T331]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   20.898125][  T331]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   20.898320][  T331]  ? 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)
[   20.898505][  T331]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   20.898692][  T331]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   20.898877][  T331]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.899088][  T331]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   20.899296][  T331]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.899494][  T331]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   20.899699][  T331]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.899886][  T331]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   20.900086][  T331]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   20.900324][  T331]  ? __copy_msghdr (net/socket.c:2556)
[   20.900532][  T331]  ___sys_sendmsg (net/socket.c:2686)
[   20.900721][  T331]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   20.900919][  T331]  ? __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)
[   20.901168][  T331]  ? copy_msghdr_from_user (net/socket.c:2673)
[   20.901353][  T331]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.901549][  T331]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.901744][  T331]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.901926][  T331]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   20.902124][  T331]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.902321][  T331]  __sys_sendmsg (net/socket.c:2716)
[   20.902510][  T331]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   20.902753][  T331]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   20.902952][  T331]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.903164][  T331]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   20.903359][  T331]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   20.903593][  T331] RIP: 0033:0x7fc4538381d7
[   20.903801][  T331] 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)
[   20.904493][  T331] RSP: 002b:00007fff20cd1628 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.904770][  T331] RAX: ffffffffffffffda RBX: 00007fff20cd1d50 RCX: 00007fc4538381d7
[   20.905072][  T331] RDX: 0000000000000000 RSI: 00007fff20cd1690 RDI: 0000000000000005
[   20.905359][  T331] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.905644][  T331] R10: 0000000010e7d910 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