======================================
| [   64.931565][  T738] ==================================================================
| [   64.931914][  T738] 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)
| [   64.932235][  T738] Write of size 8 at addr 0000000000000000 by task ip/738
| [   64.932547][  T738]
[   64.932671][  T738] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   64.932677][  T738] Call Trace:
[   64.932679][  T738]  <TASK>
[   64.932681][  T738]  dump_stack_lvl (lib/dump_stack.c:123)
[   64.932690][  T738]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   64.932694][  T738]  kasan_report (mm/kasan/report.c:597)
[   64.932701][  T738]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   64.932706][  T738]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   64.932710][  T738]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   64.932715][  T738]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   64.932718][  T738]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   64.932722][  T738]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   64.932725][  T738]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   64.932731][  T738]  __cancel_work_sync (kernel/workqueue.c:4383)
[   64.932735][  T738]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   64.932745][  T738]  ? netdev_notify_peers (net/core/dev.c:1891)
[   64.932749][  T738]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   64.932756][  T738]  __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)
[   64.932759][  T738]  ? __free_zapped_classes (kernel/locking/lockdep.c:5343)
[   64.932765][  T738]  ? netif_set_allmulti (net/core/dev.c:9890)
[   64.932767][  T738]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   64.932773][  T738]  netif_change_flags (net/core/dev.c:9989)
[   64.932777][  T738]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[   64.932784][  T738]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   64.932789][  T738]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   64.932796][  T738]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   64.932801][  T738]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   64.932806][  T738]  ? __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)
[   64.932811][  T738]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   64.932814][  T738]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   64.932818][  T738]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   64.932821][  T738]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   64.932824][  T738]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   64.932829][  T738]  ? __create_object (mm/kmemleak.c:786)
[   64.932833][  T738]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   64.932836][  T738]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   64.932839][  T738]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   64.932843][  T738]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   64.932847][  T738]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   64.932852][  T738]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   64.932857][  T738]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   64.932860][  T738]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   64.932866][  T738]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   64.932870][  T738]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   64.932872][  T738]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   64.932876][  T738]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   64.932879][  T738]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   64.932883][  T738]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   64.932885][  T738]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   64.932893][  T738]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   64.932897][  T738]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   64.932900][  T738]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   64.932907][  T738]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   64.932910][  T738]  ? 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)
[   64.932913][  T738]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   64.932918][  T738]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   64.932921][  T738]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   64.932927][  T738]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   64.932931][  T738]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   64.932935][  T738]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   64.932940][  T738]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   64.932944][  T738]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   64.932954][  T738]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   64.932958][  T738]  ? __copy_msghdr (net/socket.c:2556)
[   64.932968][  T738]  ___sys_sendmsg (net/socket.c:2686)
[   64.932971][  T738]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   64.932974][  T738]  ? __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)
[   64.932979][  T738]  ? copy_msghdr_from_user (net/socket.c:2673)
[   64.932984][  T738]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   64.932989][  T738]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   64.932995][  T738]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   64.932998][  T738]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   64.933005][  T738]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   64.933012][  T738]  __sys_sendmsg (net/socket.c:2716)
[   64.933015][  T738]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   64.933019][  T738]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   64.933027][  T738]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   64.933030][  T738]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   64.933036][  T738]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   64.933039][  T738] RIP: 0033:0x7f63d07091d7
[   64.933046][  T738] 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)
[   64.933049][  T738] RSP: 002b:00007ffd6a8c4688 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   64.933053][  T738] RAX: ffffffffffffffda RBX: 00007ffd6a8c4db0 RCX: 00007f63d07091d7
[   64.933055][  T738] RDX: 0000000000000000 RSI: 00007ffd6a8c46f0 RDI: 0000000000000005
[   64.933057][  T738] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   64.933059][  T738] R10: 00007f63d0605f60 R11: 0000000000000246 R12: 0000000000000003
[   64.933060][  T738] R13: 00000000691cc541 R14: 0000000000499600 R15: 0000000000000000
| [   64.952595][  T738] #PF: error_code(0x0002) - not-present page
| [   64.952826][  T738] PGD 99d4067 P4D 99d4067 PUD e919067 PMD 0
| [   64.953068][  T738] Oops: Oops: 0002 [#1] SMP KASAN
| [   64.953678][  T738] Tainted: [B]=BAD_PAGE
[   64.953821][  T738] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   64.954060][  T738] 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)
[   64.954303][  T738] 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
[   64.954994][  T738] RSP: 0018:ffffc900013aef40 EFLAGS: 00010046
[   64.955231][  T738] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa444090a
[   64.955526][  T738] RDX: fffffbfff50cf2cd RSI: 0000000000000008 RDI: ffffffffa8679660
[   64.955816][  T738] RBP: ffffc900013aefa8 R08: 0000000000000001 R09: fffffbfff50cf2cc
[   64.956109][  T738] R10: ffffffffa8679667 R11: ffffc900013aea00 R12: 0000000000000000
[   64.956392][  T738] R13: 0000000000000282 R14: ffff88800c06c000 R15: dffffc0000000000
[   64.956699][  T738] FS:  00007f63d053b800(0000) GS:ffff88808dc72000(0000) knlGS:0000000000000000
[   64.957024][  T738] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   64.957260][  T738] CR2: 0000000000000000 CR3: 000000000c1cd001 CR4: 0000000000772ef0
[   64.957567][  T738] PKRU: 55555554
[   64.957715][  T738] Call Trace:
[   64.957856][  T738]  <TASK>
[   64.957968][  T738]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   64.958159][  T738]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   64.958347][  T738]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   64.958554][  T738]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   64.958756][  T738]  __cancel_work_sync (kernel/workqueue.c:4383)
[   64.958939][  T738]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   64.959132][  T738]  ? netdev_notify_peers (net/core/dev.c:1891)
[   64.959315][  T738]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   64.959519][  T738]  __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)
[   64.959705][  T738]  ? __free_zapped_classes (kernel/locking/lockdep.c:5343)
[   64.959890][  T738]  ? netif_set_allmulti (net/core/dev.c:9890)
[   64.960084][  T738]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   64.960271][  T738]  netif_change_flags (net/core/dev.c:9989)
[   64.960469][  T738]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[   64.960662][  T738]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   64.960847][  T738]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   64.961039][  T738]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   64.961220][  T738]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   64.961407][  T738]  ? __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)
[   64.961608][  T738]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   64.961792][  T738]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   64.961979][  T738]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   64.962159][  T738]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   64.962338][  T738]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   64.962546][  T738]  ? __create_object (mm/kmemleak.c:786)
[   64.962737][  T738]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   64.962926][  T738]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   64.963113][  T738]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   64.963296][  T738]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   64.963619][  T738]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   64.963812][  T738]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   64.964001][  T738]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   64.964182][  T738]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   64.964487][  T738]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   64.964684][  T738]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   64.964864][  T738]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   64.965052][  T738]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   64.965336][  T738]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   64.965535][  T738]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   64.965726][  T738]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   64.965909][  T738]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   64.966203][  T738]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   64.966411][  T738]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   64.966612][  T738]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   64.966799][  T738]  ? 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)
[   64.967096][  T738]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   64.967281][  T738]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   64.967478][  T738]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   64.967671][  T738]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   64.967965][  T738]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   64.968152][  T738]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   64.968333][  T738]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   64.968530][  T738]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   64.968828][  T738]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   64.969057][  T738]  ? __copy_msghdr (net/socket.c:2556)
[   64.969243][  T738]  ___sys_sendmsg (net/socket.c:2686)
[   64.969426][  T738]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   64.969740][  T738]  ? __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)
[   64.969972][  T738]  ? copy_msghdr_from_user (net/socket.c:2673)
[   64.970161][  T738]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   64.970341][  T738]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   64.970656][  T738]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   64.970838][  T738]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   64.971026][  T738]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   64.971207][  T738]  __sys_sendmsg (net/socket.c:2716)
[   64.971516][  T738]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   64.971744][  T738]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   64.971929][  T738]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   64.972223][  T738]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   64.972415][  T738]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   64.972657][  T738] RIP: 0033:0x7f63d07091d7
[   64.972849][  T738] 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)
[   64.973715][  T738] RSP: 002b:00007ffd6a8c4688 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   64.974116][  T738] RAX: ffffffffffffffda RBX: 00007ffd6a8c4db0 RCX: 00007f63d07091d7
[   64.974433][  T738] RDX: 0000000000000000 RSI: 00007ffd6a8c46f0 RDI: 0000000000000005
[   64.974732][  T738] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   64.975010][  T738] R10: 00007f63d0605f60 R11: 0000000000000246 R12: 0000000000000003


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