======================================
| [  101.085658][  T556] ==================================================================
| [  101.086048][  T556] 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)
| [  101.086374][  T556] Write of size 8 at addr 0000000000000000 by task ip/556
| [  101.086645][  T556]
[  101.086773][  T556] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  101.086777][  T556] Call Trace:
[  101.086779][  T556]  <TASK>
[  101.086781][  T556]  dump_stack_lvl (lib/dump_stack.c:123)
[  101.086798][  T556]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  101.086801][  T556]  kasan_report (mm/kasan/report.c:597)
[  101.086811][  T556]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  101.086816][  T556]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[  101.086819][  T556]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  101.086824][  T556]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  101.086827][  T556]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  101.086832][  T556]  ? queue_delayed_work_on (kernel/workqueue.c:2565 (discriminator 1))
[  101.086837][  T556]  __cancel_work_sync (kernel/workqueue.c:4383)
[  101.086841][  T556]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  101.086851][  T556]  ? netdev_notify_peers (net/core/dev.c:1891)
[  101.086855][  T556]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  101.086865][  T556]  __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)
[  101.086870][  T556]  ? netif_set_allmulti (net/core/dev.c:9890)
[  101.086874][  T556]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  101.086881][  T556]  netif_change_flags (net/core/dev.c:9989)
[  101.086886][  T556]  dev_change_flags (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:69)
[  101.086890][  T556]  cycle_netdev (drivers/net/vrf.c:1052)
[  101.086900][  T556]  vrf_add_slave (drivers/net/vrf.c:1083 drivers/net/vrf.c:1102)
[  101.086904][  T556]  do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2964)
[  101.086912][  T556]  do_setlink.constprop.0 (net/core/rtnetlink.c:3165)
[  101.086917][  T556]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  101.086924][  T556]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  101.086932][  T556]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  101.086937][  T556]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  101.086942][  T556]  ? __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)
[  101.086946][  T556]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  101.086949][  T556]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  101.086954][  T556]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  101.086957][  T556]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  101.086961][  T556]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  101.086968][  T556]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  101.086971][  T556]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  101.086975][  T556]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  101.086978][  T556]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  101.086988][  T556]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  101.086993][  T556]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  101.086999][  T556]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  101.087002][  T556]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  101.087008][  T556]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  101.087012][  T556]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  101.087015][  T556]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  101.087019][  T556]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  101.087023][  T556]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  101.087027][  T556]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  101.087030][  T556]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  101.087038][  T556]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  101.087045][  T556]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  101.087050][  T556]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  101.087057][  T556]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  101.087060][  T556]  ? 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)
[  101.087065][  T556]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  101.087070][  T556]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  101.087074][  T556]  ? __lock_acquire (kernel/locking/lockdep.c:5601 kernel/locking/lockdep.c:5227)
[  101.087080][  T556]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  101.087085][  T556]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  101.087089][  T556]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  101.087098][  T556]  ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18)
[  101.087104][  T556]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  101.087109][  T556]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  101.087114][  T556]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  101.087117][  T556]  ? __copy_msghdr (net/socket.c:2556)
[  101.087125][  T556]  ___sys_sendmsg (net/socket.c:2686)
[  101.087127][  T556]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  101.087130][  T556]  ? __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)
[  101.087135][  T556]  ? copy_msghdr_from_user (net/socket.c:2673)
[  101.087140][  T556]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  101.087144][  T556]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  101.087150][  T556]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  101.087153][  T556]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  101.087160][  T556]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  101.087166][  T556]  __sys_sendmsg (net/socket.c:2716)
[  101.087168][  T556]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  101.087172][  T556]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  101.087179][  T556]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  101.087183][  T556]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  101.087187][  T556]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  101.087196][  T556] RIP: 0033:0x7f2ccbb581d7
[  101.087201][  T556] 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)
[  101.087205][  T556] RSP: 002b:00007ffca9e40118 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  101.087212][  T556] RAX: ffffffffffffffda RBX: 00007ffca9e40850 RCX: 00007f2ccbb581d7
[  101.087214][  T556] RDX: 0000000000000000 RSI: 00007ffca9e40180 RDI: 0000000000000005
[  101.087216][  T556] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[  101.087217][  T556] R10: 000000002c28d910 R11: 0000000000000246 R12: 0000000000000003
[  101.087219][  T556] R13: 00000000691cc74a R14: 0000000000499600 R15: 0000000000000000
| [  101.107160][  T556] #PF: error_code(0x0002) - not-present page
| [  101.107394][  T556] PGD b853067 P4D b853067 PUD 9f59067 PMD 0
| [  101.107644][  T556] Oops: Oops: 0002 [#1] SMP KASAN
| [  101.108221][  T556] Tainted: [B]=BAD_PAGE
[  101.108367][  T556] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  101.108610][  T556] 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)
[  101.108857][  T556] 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 df 81 84 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 df 81 84 00       	call   0x848209
  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
[  101.109513][  T556] RSP: 0018:ffffc90000656e70 EFLAGS: 00010046
[  101.109767][  T556] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffae840aaa
[  101.110049][  T556] RDX: fffffbfff654fecd RSI: 0000000000000008 RDI: ffffffffb2a7f660
[  101.110332][  T556] RBP: ffffc90000656ed8 R08: 0000000000000001 R09: fffffbfff654fecc
[  101.110665][  T556] R10: ffffffffb2a7f667 R11: ffffc90000656940 R12: 0000000000000000
[  101.110953][  T556] R13: 0000000000000282 R14: ffff8880090fc000 R15: dffffc0000000000
[  101.111253][  T556] FS:  00007f2ccb98a800(0000) GS:ffff8880837ec000(0000) knlGS:0000000000000000
[  101.111607][  T556] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  101.111858][  T556] CR2: 0000000000000000 CR3: 000000000245e004 CR4: 0000000000772ef0
[  101.112158][  T556] PKRU: 55555554
[  101.112308][  T556] Call Trace:
[  101.112456][  T556]  <TASK>
[  101.112562][  T556]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  101.112764][  T556]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  101.112957][  T556]  ? queue_delayed_work_on (kernel/workqueue.c:2565 (discriminator 1))
[  101.113152][  T556]  __cancel_work_sync (kernel/workqueue.c:4383)
[  101.113343][  T556]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  101.113543][  T556]  ? netdev_notify_peers (net/core/dev.c:1891)
[  101.113748][  T556]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  101.113943][  T556]  __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)
[  101.114136][  T556]  ? netif_set_allmulti (net/core/dev.c:9890)
[  101.114326][  T556]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  101.114518][  T556]  netif_change_flags (net/core/dev.c:9989)
[  101.114719][  T556]  dev_change_flags (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:69)
[  101.114917][  T556]  cycle_netdev (drivers/net/vrf.c:1052)
[  101.115062][  T556]  vrf_add_slave (drivers/net/vrf.c:1083 drivers/net/vrf.c:1102)
[  101.115252][  T556]  do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2964)
[  101.115445][  T556]  do_setlink.constprop.0 (net/core/rtnetlink.c:3165)
[  101.115645][  T556]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  101.115837][  T556]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  101.116032][  T556]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  101.116234][  T556]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  101.116424][  T556]  ? __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)
[  101.116621][  T556]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  101.116810][  T556]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  101.117003][  T556]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  101.117190][  T556]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  101.117403][  T556]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  101.117605][  T556]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  101.117806][  T556]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  101.117999][  T556]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  101.118200][  T556]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  101.118393][  T556]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  101.118590][  T556]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  101.118789][  T556]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  101.118978][  T556]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  101.119169][  T556]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  101.119364][  T556]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  101.119555][  T556]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  101.119755][  T556]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  101.119942][  T556]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  101.120133][  T556]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  101.120319][  T556]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  101.120512][  T556]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  101.120709][  T556]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  101.120906][  T556]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  101.121096][  T556]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  101.121305][  T556]  ? 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)
[  101.121496][  T556]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  101.121697][  T556]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  101.121887][  T556]  ? __lock_acquire (kernel/locking/lockdep.c:5601 kernel/locking/lockdep.c:5227)
[  101.122194][  T556]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  101.122387][  T556]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  101.122578][  T556]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  101.122783][  T556]  ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18)
[  101.123087][  T556]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  101.123278][  T556]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  101.123468][  T556]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  101.123712][  T556]  ? __copy_msghdr (net/socket.c:2556)
[  101.124014][  T556]  ___sys_sendmsg (net/socket.c:2686)
[  101.124205][  T556]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  101.124393][  T556]  ? __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)
[  101.124751][  T556]  ? copy_msghdr_from_user (net/socket.c:2673)
[  101.124940][  T556]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  101.125131][  T556]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  101.125318][  T556]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  101.125639][  T556]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  101.125836][  T556]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  101.126027][  T556]  __sys_sendmsg (net/socket.c:2716)
[  101.126214][  T556]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  101.126558][  T556]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  101.126757][  T556]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  101.126945][  T556]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  101.127135][  T556]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  101.127485][  T556] RIP: 0033:0x7f2ccbb581d7
[  101.127697][  T556] 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)
[  101.128480][  T556] RSP: 002b:00007ffca9e40118 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  101.128784][  T556] RAX: ffffffffffffffda RBX: 00007ffca9e40850 RCX: 00007f2ccbb581d7
[  101.129193][  T556] RDX: 0000000000000000 RSI: 00007ffca9e40180 RDI: 0000000000000005
[  101.129477][  T556] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[  101.129766][  T556] R10: 000000002c28d910 R11: 0000000000000246 R12: 0000000000000003


Finger prints:
kasan_report:kasan_check_range:try_to_grab_pending:__cancel_work:__cancel_work_sync
try_to_grab_pending:__cancel_work:__cancel_work_sync:__dev_close_many:__dev_change_flags