======================================
| [   21.473810][  T326] ==================================================================
| [   21.474210][  T326] 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)
| [   21.474573][  T326] Write of size 8 at addr 0000000000000000 by task ip/326
| [   21.474855][  T326]
[   21.474989][  T326] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.474994][  T326] Call Trace:
[   21.474998][  T326]  <TASK>
[   21.475001][  T326]  dump_stack_lvl (lib/dump_stack.c:123)
[   21.475019][  T326]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   21.475022][  T326]  kasan_report (mm/kasan/report.c:597)
[   21.475034][  T326]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   21.475039][  T326]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   21.475043][  T326]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   21.475048][  T326]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   21.475052][  T326]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   21.475056][  T326]  ? qdisc_destroy (net/sched/sch_generic.c:1355)
[   21.475066][  T326]  __cancel_work_sync (kernel/workqueue.c:4383)
[   21.475071][  T326]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   21.475081][  T326]  ? netdev_notify_peers (net/core/dev.c:1891)
[   21.475086][  T326]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   21.475092][  T326]  __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)
[   21.475095][  T326]  ? netif_set_allmulti (net/core/dev.c:9890)
[   21.475100][  T326]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.475109][  T326]  netif_change_flags (net/core/dev.c:9989)
[   21.475116][  T326]  dev_change_flags (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:69)
[   21.475120][  T326] cycle_netdev (drivers/net/vrf.c:1052) vrf
[   21.475128][  T326] vrf_add_slave (drivers/net/vrf.c:1083 drivers/net/vrf.c:1102) vrf
[   21.475133][  T326]  do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2964)
[   21.475139][  T326]  do_setlink.constprop.0 (net/core/rtnetlink.c:3165)
[   21.475144][  T326]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   21.475149][  T326]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.475157][  T326]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   21.475162][  T326]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.475167][  T326]  ? __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)
[   21.475171][  T326]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   21.475175][  T326]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.475182][  T326]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.475185][  T326]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   21.475189][  T326]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   21.475198][  T326]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.475201][  T326]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   21.475204][  T326]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   21.475210][  T326]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   21.475221][  T326]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   21.475227][  T326]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   21.475232][  T326]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.475235][  T326]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.475241][  T326]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.475245][  T326]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   21.475248][  T326]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.475252][  T326]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.475255][  T326]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   21.475259][  T326]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   21.475261][  T326]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.475269][  T326]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   21.475275][  T326]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   21.475279][  T326]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   21.475285][  T326]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   21.475288][  T326]  ? 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)
[   21.475292][  T326]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   21.475297][  T326]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   21.475300][  T326]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.475306][  T326]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   21.475310][  T326]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   21.475314][  T326]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   21.475324][  T326]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   21.475328][  T326]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   21.475335][  T326]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   21.475339][  T326]  ? __copy_msghdr (net/socket.c:2556)
[   21.475346][  T326]  ___sys_sendmsg (net/socket.c:2686)
[   21.475349][  T326]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   21.475352][  T326]  ? __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)
[   21.475359][  T326]  ? copy_msghdr_from_user (net/socket.c:2673)
[   21.475363][  T326]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.475368][  T326]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.475374][  T326]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.475377][  T326]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   21.475385][  T326]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.475392][  T326]  __sys_sendmsg (net/socket.c:2716)
[   21.475395][  T326]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   21.475399][  T326]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   21.475406][  T326]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.475410][  T326]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   21.475417][  T326]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   21.475427][  T326] RIP: 0033:0x7f081b21a1d7
[   21.475433][  T326] 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)
[   21.475437][  T326] RSP: 002b:00007ffd727e6af8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.475443][  T326] RAX: ffffffffffffffda RBX: 00007ffd727e7220 RCX: 00007f081b21a1d7
[   21.475447][  T326] RDX: 0000000000000000 RSI: 00007ffd727e6b60 RDI: 0000000000000005
[   21.475449][  T326] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   21.475450][  T326] R10: 00000000132de910 R11: 0000000000000246 R12: 0000000000000004
[   21.475452][  T326] R13: 00000000691cd8b9 R14: 0000000000499600 R15: 0000000000000000
| [   21.496304][  T326] #PF: error_code(0x0002) - not-present page
| [   21.496531][  T326] PGD b823067 P4D b823067 PUD c4d8067 PMD 0
| [   21.496781][  T326] Oops: Oops: 0002 [#1] SMP KASAN
| [   21.497376][  T326] Tainted: [B]=BAD_PAGE
[   21.497520][  T326] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.497754][  T326] 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)
[   21.498027][  T326] 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
[   21.498691][  T326] RSP: 0018:ffffc90000606e70 EFLAGS: 00010046
[   21.498954][  T326] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffb8c4090a
[   21.499247][  T326] RDX: fffffbfff79cf2cd RSI: 0000000000000008 RDI: ffffffffbce79660
[   21.499537][  T326] RBP: ffffc90000606ed8 R08: 0000000000000001 R09: fffffbfff79cf2cc
[   21.499821][  T326] R10: ffffffffbce79667 R11: ffffc90000606940 R12: 0000000000000000
[   21.500120][  T326] R13: 0000000000000282 R14: ffff8880028f4000 R15: dffffc0000000000
[   21.500401][  T326] FS:  00007f081b04c800(0000) GS:ffff8880793f2000(0000) knlGS:0000000000000000
[   21.500721][  T326] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.500981][  T326] CR2: 0000000000000000 CR3: 0000000004c04004 CR4: 0000000000772ef0
[   21.501276][  T326] PKRU: 55555554
[   21.501419][  T326] Call Trace:
[   21.501587][  T326]  <TASK>
[   21.501700][  T326]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   21.501940][  T326]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   21.502155][  T326]  ? qdisc_destroy (net/sched/sch_generic.c:1355)
[   21.502366][  T326]  __cancel_work_sync (kernel/workqueue.c:4383)
[   21.502569][  T326]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   21.502779][  T326]  ? netdev_notify_peers (net/core/dev.c:1891)
[   21.502998][  T326]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   21.503207][  T326]  __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)
[   21.503409][  T326]  ? netif_set_allmulti (net/core/dev.c:9890)
[   21.503618][  T326]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.503831][  T326]  netif_change_flags (net/core/dev.c:9989)
[   21.504065][  T326]  dev_change_flags (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:69)
[   21.504270][  T326] cycle_netdev (drivers/net/vrf.c:1052) vrf
[   21.504478][  T326] vrf_add_slave (drivers/net/vrf.c:1083 drivers/net/vrf.c:1102) vrf
[   21.504682][  T326]  do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2964)
[   21.504912][  T326]  do_setlink.constprop.0 (net/core/rtnetlink.c:3165)
[   21.505122][  T326]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   21.505329][  T326]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.505541][  T326]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   21.505748][  T326]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.505976][  T326]  ? __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)
[   21.506180][  T326]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   21.506384][  T326]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.506587][  T326]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.506807][  T326]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   21.507020][  T326]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   21.507225][  T326]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.507440][  T326]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   21.507626][  T326]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   21.507822][  T326]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   21.508055][  T326]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   21.508263][  T326]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   21.508468][  T326]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.508670][  T326]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.508895][  T326]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.509099][  T326]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   21.509302][  T326]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.509519][  T326]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   21.509728][  T326]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   21.509951][  T326]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   21.510153][  T326]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.510360][  T326]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   21.510564][  T326]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   21.510774][  T326]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   21.510995][  T326]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   21.511194][  T326]  ? 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)
[   21.511392][  T326]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   21.511602][  T326]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   21.511812][  T326]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.512024][  T326]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   21.512228][  T326]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   21.512428][  T326]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   21.512636][  T326]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   21.512845][  T326]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   21.513054][  T326]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   21.513311][  T326]  ? __copy_msghdr (net/socket.c:2556)
[   21.513516][  T326]  ___sys_sendmsg (net/socket.c:2686)
[   21.513719][  T326]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   21.513941][  T326]  ? __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)
[   21.514196][  T326]  ? copy_msghdr_from_user (net/socket.c:2673)
[   21.514399][  T326]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.514609][  T326]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   21.514827][  T326]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   21.515046][  T326]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   21.515251][  T326]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   21.515460][  T326]  __sys_sendmsg (net/socket.c:2716)
[   21.515687][  T326]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   21.515960][  T326]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   21.516166][  T326]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   21.516363][  T326]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   21.516579][  T326]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   21.516836][  T326] RIP: 0033:0x7f081b21a1d7
[   21.517059][  T326] 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)
[   21.517775][  T326] RSP: 002b:00007ffd727e6af8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.518104][  T326] RAX: ffffffffffffffda RBX: 00007ffd727e7220 RCX: 00007f081b21a1d7
[   21.518415][  T326] RDX: 0000000000000000 RSI: 00007ffd727e6b60 RDI: 0000000000000005
[   21.518720][  T326] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   21.519042][  T326] R10: 00000000132de910 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