======================================
| [   67.897087][  T644] ==================================================================
| [   67.897415][  T644] 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)
| [   67.897738][  T644] Write of size 8 at addr 0000000000000000 by task ip/644
| [   67.898040][  T644]
[   67.898180][  T644] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   67.898183][  T644] Call Trace:
[   67.898185][  T644]  <TASK>
[   67.898188][  T644]  dump_stack_lvl (lib/dump_stack.c:123)
[   67.898198][  T644]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   67.898203][  T644]  kasan_report (mm/kasan/report.c:597)
[   67.898211][  T644]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   67.898216][  T644]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   67.898219][  T644]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   67.898222][  T644]  ? __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)
[   67.898228][  T644]  ? netif_change_flags (net/core/dev.c:9989)
[   67.898233][  T644]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   67.898236][  T644]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   67.898241][  T644]  ? queue_delayed_work_on (kernel/workqueue.c:2565 (discriminator 1))
[   67.898245][  T644]  __cancel_work_sync (kernel/workqueue.c:4383)
[   67.898249][  T644]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   67.898253][  T644]  ? netdev_notify_peers (net/core/dev.c:1891)
[   67.898256][  T644]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   67.898265][  T644]  __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)
[   67.898268][  T644]  ? find_held_lock (kernel/locking/lockdep.c:5343)
[   67.898274][  T644]  ? netif_set_allmulti (net/core/dev.c:9890)
[   67.898277][  T644]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   67.898283][  T644]  netif_change_flags (net/core/dev.c:9989)
[   67.898288][  T644]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[   67.898295][  T644]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   67.898301][  T644]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   67.898308][  T644]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   67.898313][  T644]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   67.898318][  T644]  ? __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)
[   67.898322][  T644]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   67.898325][  T644]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   67.898330][  T644]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   67.898333][  T644]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   67.898336][  T644]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   67.898341][  T644]  ? __create_object (mm/kmemleak.c:786)
[   67.898347][  T644]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   67.898350][  T644]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   67.898354][  T644]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   67.898357][  T644]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   67.898363][  T644]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   67.898369][  T644]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   67.898374][  T644]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   67.898377][  T644]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   67.898383][  T644]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   67.898386][  T644]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   67.898389][  T644]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   67.898393][  T644]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   67.898397][  T644]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   67.898401][  T644]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   67.898404][  T644]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   67.898411][  T644]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   67.898417][  T644]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   67.898421][  T644]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   67.898428][  T644]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   67.898431][  T644]  ? 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)
[   67.898436][  T644]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   67.898441][  T644]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   67.898445][  T644]  ? __lock_acquire (kernel/locking/lockdep.c:5601 kernel/locking/lockdep.c:5227)
[   67.898453][  T644]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   67.898462][  T644]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   67.898468][  T644]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   67.898472][  T644]  ? _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)
[   67.898477][  T644]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   67.898481][  T644]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   67.898485][  T644]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   67.898488][  T644]  ? __copy_msghdr (net/socket.c:2556)
[   67.898495][  T644]  ___sys_sendmsg (net/socket.c:2686)
[   67.898497][  T644]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   67.898500][  T644]  ? __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)
[   67.898504][  T644]  ? copy_msghdr_from_user (net/socket.c:2673)
[   67.898508][  T644]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   67.898513][  T644]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   67.898518][  T644]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   67.898522][  T644]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   67.898526][  T644]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   67.898532][  T644]  __sys_sendmsg (net/socket.c:2716)
[   67.898535][  T644]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   67.898538][  T644]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   67.898545][  T644]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   67.898549][  T644]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   67.898554][  T644]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   67.898558][  T644] RIP: 0033:0x7f592aaec1d7
[   67.898562][  T644] 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)
[   67.898565][  T644] RSP: 002b:00007ffc86c5c528 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   67.898570][  T644] RAX: ffffffffffffffda RBX: 00007ffc86c5cc60 RCX: 00007f592aaec1d7
[   67.898572][  T644] RDX: 0000000000000000 RSI: 00007ffc86c5c590 RDI: 0000000000000005
[   67.898574][  T644] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   67.898576][  T644] R10: 00007f592a9e8510 R11: 0000000000000246 R12: 0000000000000003
[   67.898578][  T644] R13: 00000000691cbe3b R14: 0000000000499600 R15: 0000000000000000
| [   67.918653][  T644] #PF: error_code(0x0002) - not-present page
| [   67.918887][  T644] PGD 58ce067 P4D 58ce067 PUD ce6a067 PMD 0
| [   67.919125][  T644] Oops: Oops: 0002 [#1] SMP KASAN
| [   67.919719][  T644] Tainted: [B]=BAD_PAGE
[   67.919883][  T644] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   67.920135][  T644] 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)
[   67.920388][  T644] 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
[   67.921076][  T644] RSP: 0018:ffffc900006c6f40 EFLAGS: 00010046
[   67.921337][  T644] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff89840aaa
[   67.921640][  T644] RDX: fffffbfff1b4fecd RSI: 0000000000000008 RDI: ffffffff8da7f660
[   67.921921][  T644] RBP: ffffc900006c6fa8 R08: 0000000000000001 R09: fffffbfff1b4fecc
[   67.922206][  T644] R10: ffffffff8da7f667 R11: ffffc900006c6a00 R12: 0000000000000000
[   67.922501][  T644] R13: 0000000000000282 R14: ffff88800887c000 R15: dffffc0000000000
[   67.922794][  T644] FS:  00007f592a91e800(0000) GS:ffff8880a2dec000(0000) knlGS:0000000000000000
[   67.923125][  T644] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   67.923362][  T644] CR2: 0000000000000000 CR3: 000000000fb70005 CR4: 0000000000772ef0
[   67.923658][  T644] PKRU: 55555554
[   67.923801][  T644] Call Trace:
[   67.923944][  T644]  <TASK>
[   67.924058][  T644]  ? __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)
[   67.924253][  T644]  ? netif_change_flags (net/core/dev.c:9989)
[   67.924440][  T644]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   67.924643][  T644]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   67.924828][  T644]  ? queue_delayed_work_on (kernel/workqueue.c:2565 (discriminator 1))
[   67.925027][  T644]  __cancel_work_sync (kernel/workqueue.c:4383)
[   67.925213][  T644]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   67.925402][  T644]  ? netdev_notify_peers (net/core/dev.c:1891)
[   67.925596][  T644]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   67.925793][  T644]  __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)
[   67.925983][  T644]  ? find_held_lock (kernel/locking/lockdep.c:5343)
[   67.926185][  T644]  ? netif_set_allmulti (net/core/dev.c:9890)
[   67.926371][  T644]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   67.926568][  T644]  netif_change_flags (net/core/dev.c:9989)
[   67.926780][  T644]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[   67.926976][  T644]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   67.927177][  T644]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   67.927363][  T644]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   67.927571][  T644]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   67.927771][  T644]  ? __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)
[   67.927964][  T644]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   67.928187][  T644]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   67.928374][  T644]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   67.928571][  T644]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   67.928766][  T644]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   67.928959][  T644]  ? __create_object (mm/kmemleak.c:786)
[   67.929170][  T644]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   67.929355][  T644]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   67.929554][  T644]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   67.929746][  T644]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   67.929934][  T644]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   67.930133][  T644]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   67.930318][  T644]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   67.930512][  T644]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   67.930744][  T644]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   67.930943][  T644]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   67.931137][  T644]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   67.931330][  T644]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   67.931523][  T644]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   67.931724][  T644]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   67.931923][  T644]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   67.932136][  T644]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   67.932330][  T644]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   67.932513][  T644]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   67.932734][  T644]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   67.932925][  T644]  ? 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)
[   67.933103][  T644]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   67.933317][  T644]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   67.933504][  T644]  ? __lock_acquire (kernel/locking/lockdep.c:5601 kernel/locking/lockdep.c:5227)
[   67.933736][  T644]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   67.933908][  T644]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   67.934094][  T644]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   67.934303][  T644]  ? _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)
[   67.934500][  T644]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   67.934697][  T644]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   67.934894][  T644]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   67.935131][  T644]  ? __copy_msghdr (net/socket.c:2556)
[   67.935318][  T644]  ___sys_sendmsg (net/socket.c:2686)
[   67.935505][  T644]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   67.935704][  T644]  ? __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)
[   67.936084][  T644]  ? copy_msghdr_from_user (net/socket.c:2673)
[   67.936275][  T644]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   67.936465][  T644]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   67.936778][  T644]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   67.936971][  T644]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   67.937162][  T644]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   67.937369][  T644]  __sys_sendmsg (net/socket.c:2716)
[   67.937544][  T644]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   67.937823][  T644]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   67.938008][  T644]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   67.938204][  T644]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   67.938503][  T644]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   67.938740][  T644] RIP: 0033:0x7f592aaec1d7
[   67.938952][  T644] 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)
[   67.939787][  T644] RSP: 002b:00007ffc86c5c528 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   67.940052][  T644] RAX: ffffffffffffffda RBX: 00007ffc86c5cc60 RCX: 00007f592aaec1d7
[   67.940476][  T644] RDX: 0000000000000000 RSI: 00007ffc86c5c590 RDI: 0000000000000005
[   67.940778][  T644] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   67.941168][  T644] R10: 00007f592a9e8510 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