======================================
| [   48.407945][  T547] ==================================================================
| [   48.408241][  T547] 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)
| [   48.408521][  T547] Write of size 8 at addr 0000000000000000 by task ip/547
| [   48.408747][  T547]
[   48.408876][  T547] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   48.408879][  T547] Call Trace:
[   48.408883][  T547]  <TASK>
[   48.408884][  T547]  dump_stack_lvl (lib/dump_stack.c:123)
[   48.408894][  T547]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   48.408897][  T547]  kasan_report (mm/kasan/report.c:597)
[   48.408904][  T547]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   48.408910][  T547]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   48.408913][  T547]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   48.408918][  T547]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   48.408922][  T547]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   48.408925][  T547]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   48.408929][  T547]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   48.408935][  T547]  __cancel_work_sync (kernel/workqueue.c:4383)
[   48.408939][  T547]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   48.408947][  T547]  ? netdev_notify_peers (net/core/dev.c:1891)
[   48.408951][  T547]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   48.408961][  T547]  netif_close_many (net/core/dev.c:1959)
[   48.408965][  T547]  ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186)
[   48.408972][  T547]  ? __dev_close_many (net/core/dev.c:1949)
[   48.408975][  T547]  ? dev_getbyhwaddr_rcu (net/core/dev.c:10950)
[   48.408978][  T547]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   48.408984][  T547]  __dev_change_net_namespace (./include/linux/list.h:119 ./include/linux/list.h:223 ./include/linux/list.h:237 net/core/dev.c:1975 net/core/dev.c:1968 net/core/dev.c:12746)
[   48.408991][  T547]  ? default_device_exit_batch (net/core/dev.c:12662)
[   48.408994][  T547]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   48.408998][  T547]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   48.409002][  T547]  ? rtnl_af_lookup (net/core/rtnetlink.c:2675)
[   48.409006][  T547]  ? is_bpf_text_address (kernel/bpf/core.c:749)
[   48.409012][  T547]  ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94)
[   48.409018][  T547]  do_setlink.constprop.0 (net/core/rtnetlink.c:3060)
[   48.409022][  T547]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   48.409027][  T547]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   48.409033][  T547]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   48.409038][  T547]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   48.409043][  T547]  ? __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)
[   48.409047][  T547]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   48.409050][  T547]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   48.409057][  T547]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   48.409060][  T547]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   48.409064][  T547]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   48.409068][  T547]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   48.409071][  T547]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   48.409074][  T547]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   48.409077][  T547]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   48.409082][  T547]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   48.409087][  T547]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   48.409092][  T547]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   48.409095][  T547]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   48.409101][  T547]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   48.409104][  T547]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   48.409107][  T547]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   48.409111][  T547]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   48.409114][  T547]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   48.409118][  T547]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   48.409121][  T547]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   48.409128][  T547]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   48.409133][  T547]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   48.409136][  T547]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   48.409143][  T547]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   48.409146][  T547]  ? 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)
[   48.409150][  T547]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   48.409154][  T547]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   48.409158][  T547]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   48.409164][  T547]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   48.409169][  T547]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   48.409172][  T547]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   48.409178][  T547]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   48.409182][  T547]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   48.409190][  T547]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   48.409193][  T547]  ? __copy_msghdr (net/socket.c:2556)
[   48.409200][  T547]  ___sys_sendmsg (net/socket.c:2686)
[   48.409203][  T547]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   48.409206][  T547]  ? __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)
[   48.409211][  T547]  ? copy_msghdr_from_user (net/socket.c:2673)
[   48.409216][  T547]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   48.409220][  T547]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   48.409226][  T547]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   48.409229][  T547]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   48.409234][  T547]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   48.409241][  T547]  __sys_sendmsg (net/socket.c:2716)
[   48.409244][  T547]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   48.409247][  T547]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   48.409255][  T547]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   48.409259][  T547]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   48.409265][  T547]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   48.409269][  T547] RIP: 0033:0x7f8da690f1d7
[   48.409273][  T547] 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)
[   48.409275][  T547] RSP: 002b:00007ffc249d4068 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   48.409281][  T547] RAX: ffffffffffffffda RBX: 00007ffc249d4790 RCX: 00007f8da690f1d7
[   48.409283][  T547] RDX: 0000000000000000 RSI: 00007ffc249d40d0 RDI: 0000000000000005
[   48.409285][  T547] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[   48.409287][  T547] R10: 00007f8da680bf60 R11: 0000000000000246 R12: 0000000000000004
[   48.409289][  T547] R13: 00000000691cc7ce R14: 0000000000499600 R15: 0000000000000000
| [   48.427916][  T547] #PF: error_code(0x0002) - not-present page
| [   48.428121][  T547] PGD dbe8067 P4D dbe8067 PUD a75d067 PMD 0
| [   48.428337][  T547] Oops: Oops: 0002 [#1] SMP KASAN
| [   48.428870][  T547] Tainted: [B]=BAD_PAGE
[   48.429001][  T547] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   48.429214][  T547] 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)
[   48.429433][  T547] 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
[   48.430048][  T547] RSP: 0018:ffffc90001086dd0 EFLAGS: 00010046
[   48.430262][  T547] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffadc4090a
[   48.430518][  T547] RDX: fffffbfff63cf2cd RSI: 0000000000000008 RDI: ffffffffb1e79660
[   48.430773][  T547] RBP: ffffc90001086e38 R08: 0000000000000001 R09: fffffbfff63cf2cc
[   48.431058][  T547] R10: ffffffffb1e79667 R11: ffffc900010868c0 R12: 0000000000000000
[   48.431315][  T547] R13: 0000000000000282 R14: ffff8880095ec000 R15: dffffc0000000000
[   48.431570][  T547] FS:  00007f8da6741800(0000) GS:ffff8880844f2000(0000) knlGS:0000000000000000
[   48.431883][  T547] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   48.432096][  T547] CR2: 0000000000000000 CR3: 000000000c7c1004 CR4: 0000000000772ef0
[   48.432357][  T547] PKRU: 55555554
[   48.432482][  T547] Call Trace:
[   48.432608][  T547]  <TASK>
[   48.432697][  T547]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   48.432887][  T547]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   48.433058][  T547]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   48.433226][  T547]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   48.433401][  T547]  __cancel_work_sync (kernel/workqueue.c:4383)
[   48.433569][  T547]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   48.433738][  T547]  ? netdev_notify_peers (net/core/dev.c:1891)
[   48.433925][  T547]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   48.434096][  T547]  netif_close_many (net/core/dev.c:1959)
[   48.434263][  T547]  ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186)
[   48.434431][  T547]  ? __dev_close_many (net/core/dev.c:1949)
[   48.434598][  T547]  ? dev_getbyhwaddr_rcu (net/core/dev.c:10950)
[   48.434768][  T547]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   48.434957][  T547]  __dev_change_net_namespace (./include/linux/list.h:119 ./include/linux/list.h:223 ./include/linux/list.h:237 net/core/dev.c:1975 net/core/dev.c:1968 net/core/dev.c:12746)
[   48.435169][  T547]  ? default_device_exit_batch (net/core/dev.c:12662)
[   48.435377][  T547]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   48.435651][  T547]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   48.435823][  T547]  ? rtnl_af_lookup (net/core/rtnetlink.c:2675)
[   48.436001][  T547]  ? is_bpf_text_address (kernel/bpf/core.c:749)
[   48.436177][  T547]  ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94)
[   48.436448][  T547]  do_setlink.constprop.0 (net/core/rtnetlink.c:3060)
[   48.436618][  T547]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   48.436787][  T547]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   48.436977][  T547]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   48.437250][  T547]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   48.437419][  T547]  ? __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)
[   48.437592][  T547]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   48.437759][  T547]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   48.437945][  T547]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   48.438115][  T547]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   48.438282][  T547]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   48.438452][  T547]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   48.438725][  T547]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   48.438891][  T547]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   48.439062][  T547]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   48.439230][  T547]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   48.439527][  T547]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   48.439697][  T547]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   48.439862][  T547]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   48.440032][  T547]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   48.440300][  T547]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   48.440466][  T547]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   48.440637][  T547]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   48.440810][  T547]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   48.440980][  T547]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   48.441144][  T547]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   48.441313][  T547]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   48.441480][  T547]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   48.441749][  T547]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   48.441918][  T547]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   48.442089][  T547]  ? 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)
[   48.442256][  T547]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   48.442526][  T547]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   48.442706][  T547]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   48.442877][  T547]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   48.443044][  T547]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   48.443312][  T547]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   48.443486][  T547]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   48.443654][  T547]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   48.443822][  T547]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   48.444134][  T547]  ? __copy_msghdr (net/socket.c:2556)
[   48.444303][  T547]  ___sys_sendmsg (net/socket.c:2686)
[   48.444470][  T547]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   48.444638][  T547]  ? __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)
[   48.444953][  T547]  ? copy_msghdr_from_user (net/socket.c:2673)
[   48.445124][  T547]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   48.445294][  T547]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   48.445571][  T547]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   48.445737][  T547]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   48.445905][  T547]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   48.446076][  T547]  __sys_sendmsg (net/socket.c:2716)
[   48.446345][  T547]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   48.446555][  T547]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   48.446725][  T547]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   48.446896][  T547]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   48.447166][  T547]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   48.447374][  T547] RIP: 0033:0x7f8da690f1d7
[   48.447549][  T547] 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)
[   48.448264][  T547] RSP: 002b:00007ffc249d4068 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   48.448523][  T547] RAX: ffffffffffffffda RBX: 00007ffc249d4790 RCX: 00007f8da690f1d7
[   48.448883][  T547] RDX: 0000000000000000 RSI: 00007ffc249d40d0 RDI: 0000000000000005
[   48.449141][  T547] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[   48.449500][  T547] R10: 00007f8da680bf60 R11: 0000000000000246 R12: 0000000000000004


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