======================================
| [  154.815467][  T936] ==================================================================
| [  154.815830][  T936] 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)
| [  154.816139][  T936] Write of size 8 at addr 0000000000000000 by task ip/936
| [  154.816395][  T936]
[  154.816507][  T936] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  154.816510][  T936] Call Trace:
[  154.816513][  T936]  <TASK>
[  154.816515][  T936]  dump_stack_lvl (lib/dump_stack.c:123)
[  154.816528][  T936]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  154.816533][  T936]  kasan_report (mm/kasan/report.c:597)
[  154.816539][  T936]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  154.816544][  T936]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[  154.816548][  T936]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  154.816554][  T936]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  154.816557][  T936]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  154.816561][  T936]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[  154.816565][  T936]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  154.816572][  T936]  __cancel_work_sync (kernel/workqueue.c:4383)
[  154.816575][  T936]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  154.816584][  T936]  ? netdev_notify_peers (net/core/dev.c:1891)
[  154.816589][  T936]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  154.816594][  T936]  __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)
[  154.816598][  T936]  ? __free_zapped_classes (kernel/locking/lockdep.c:5343)
[  154.816607][  T936]  ? netif_set_allmulti (net/core/dev.c:9890)
[  154.816609][  T936]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  154.816619][  T936]  netif_change_flags (net/core/dev.c:9989)
[  154.816625][  T936]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[  154.816637][  T936]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  154.816646][  T936]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  154.816653][  T936]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  154.816659][  T936]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  154.816664][  T936]  ? __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)
[  154.816668][  T936]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  154.816671][  T936]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  154.816676][  T936]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  154.816679][  T936]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  154.816683][  T936]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  154.816691][  T936]  ? __create_object (mm/kmemleak.c:786)
[  154.816695][  T936]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  154.816699][  T936]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  154.816702][  T936]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  154.816705][  T936]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  154.816711][  T936]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  154.816717][  T936]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  154.816725][  T936]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  154.816729][  T936]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  154.816738][  T936]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  154.816743][  T936]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  154.816745][  T936]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  154.816750][  T936]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  154.816753][  T936]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  154.816757][  T936]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  154.816760][  T936]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  154.816771][  T936]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  154.816778][  T936]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  154.816784][  T936]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  154.816791][  T936]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  154.816794][  T936]  ? 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)
[  154.816799][  T936]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  154.816803][  T936]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  154.816807][  T936]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  154.816813][  T936]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  154.816818][  T936]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  154.816822][  T936]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  154.816829][  T936]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  154.816833][  T936]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  154.816839][  T936]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  154.816842][  T936]  ? __copy_msghdr (net/socket.c:2556)
[  154.816850][  T936]  ___sys_sendmsg (net/socket.c:2686)
[  154.816853][  T936]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  154.816856][  T936]  ? __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)
[  154.816863][  T936]  ? copy_msghdr_from_user (net/socket.c:2673)
[  154.816868][  T936]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  154.816873][  T936]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  154.816882][  T936]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  154.816887][  T936]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  154.816895][  T936]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  154.816902][  T936]  __sys_sendmsg (net/socket.c:2716)
[  154.816905][  T936]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  154.816909][  T936]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  154.816916][  T936]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  154.816920][  T936]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  154.816927][  T936]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  154.816932][  T936] RIP: 0033:0x7fe2a12d61d7
[  154.816937][  T936] 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)
[  154.816940][  T936] RSP: 002b:00007ffedf872558 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  154.816944][  T936] RAX: ffffffffffffffda RBX: 00007ffedf872c80 RCX: 00007fe2a12d61d7
[  154.816946][  T936] RDX: 0000000000000000 RSI: 00007ffedf8725c0 RDI: 0000000000000005
[  154.816948][  T936] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  154.816950][  T936] R10: 00007fe2a11d2f60 R11: 0000000000000246 R12: 0000000000000003
[  154.816952][  T936] R13: 00000000691cd45c R14: 0000000000499600 R15: 0000000000000000
| [  154.835867][  T936] #PF: error_code(0x0002) - not-present page
| [  154.836098][  T936] PGD c809067 P4D c809067 PUD bf7a067 PMD 0
| [  154.836336][  T936] Oops: Oops: 0002 [#1] SMP KASAN
| [  154.836920][  T936] Tainted: [B]=BAD_PAGE
[  154.837055][  T936] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  154.837300][  T936] 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)
[  154.837555][  T936] 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
[  154.838225][  T936] RSP: 0018:ffffc900010d6f40 EFLAGS: 00010046
[  154.838480][  T936] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff83c4090a
[  154.838904][  T936] RDX: fffffbfff0fcf2cd RSI: 0000000000000008 RDI: ffffffff87e79660
[  154.839173][  T936] RBP: ffffc900010d6fa8 R08: 0000000000000001 R09: fffffbfff0fcf2cc
[  154.839469][  T936] R10: ffffffff87e79667 R11: ffffc900010d6a00 R12: 0000000000000000
[  154.839868][  T936] R13: 0000000000000282 R14: ffff88800a924000 R15: dffffc0000000000
[  154.840146][  T936] FS:  00007fe2a1108800(0000) GS:ffff8880ae472000(0000) knlGS:0000000000000000
[  154.840589][  T936] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  154.840835][  T936] CR2: 0000000000000000 CR3: 000000000a769006 CR4: 0000000000772ef0
[  154.841109][  T936] PKRU: 55555554
[  154.841246][  T936] Call Trace:
[  154.841412][  T936]  <TASK>
[  154.841513][  T936]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  154.841696][  T936]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  154.841894][  T936]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[  154.842183][  T936]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  154.842389][  T936]  __cancel_work_sync (kernel/workqueue.c:4383)
[  154.842570][  T936]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  154.842766][  T936]  ? netdev_notify_peers (net/core/dev.c:1891)
[  154.843072][  T936]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  154.843249][  T936]  __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)
[  154.843440][  T936]  ? __free_zapped_classes (kernel/locking/lockdep.c:5343)
[  154.843624][  T936]  ? netif_set_allmulti (net/core/dev.c:9890)
[  154.843931][  T936]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  154.844115][  T936]  netif_change_flags (net/core/dev.c:9989)
[  154.844294][  T936]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[  154.844501][  T936]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  154.844804][  T936]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  154.844989][  T936]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  154.845171][  T936]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  154.845363][  T936]  ? __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)
[  154.845663][  T936]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  154.845860][  T936]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  154.846049][  T936]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  154.846231][  T936]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  154.846542][  T936]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  154.846724][  T936]  ? __create_object (mm/kmemleak.c:786)
[  154.846923][  T936]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  154.847101][  T936]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  154.847280][  T936]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  154.847472][  T936]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  154.847659][  T936]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  154.847851][  T936]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  154.848146][  T936]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  154.848336][  T936]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  154.848524][  T936]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  154.848703][  T936]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  154.849018][  T936]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  154.849204][  T936]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  154.849412][  T936]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  154.849593][  T936]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  154.849898][  T936]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  154.850080][  T936]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  154.850270][  T936]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  154.850472][  T936]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  154.850772][  T936]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  154.850958][  T936]  ? 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)
[  154.851145][  T936]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  154.851333][  T936]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  154.851632][  T936]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  154.851831][  T936]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  154.852012][  T936]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  154.852191][  T936]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  154.852502][  T936]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  154.852688][  T936]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  154.852883][  T936]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  154.853107][  T936]  ? __copy_msghdr (net/socket.c:2556)
[  154.853421][  T936]  ___sys_sendmsg (net/socket.c:2686)
[  154.853598][  T936]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  154.853795][  T936]  ? __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)
[  154.854038][  T936]  ? copy_msghdr_from_user (net/socket.c:2673)
[  154.854369][  T936]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  154.854570][  T936]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  154.854778][  T936]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  154.854977][  T936]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  154.855282][  T936]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  154.855490][  T936]  __sys_sendmsg (net/socket.c:2716)
[  154.855682][  T936]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  154.855933][  T936]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  154.856248][  T936]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  154.856470][  T936]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  154.856668][  T936]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  154.857036][  T936] RIP: 0033:0x7fe2a12d61d7
[  154.857240][  T936] 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)
[  154.858096][  T936] RSP: 002b:00007ffedf872558 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  154.858396][  T936] RAX: ffffffffffffffda RBX: 00007ffedf872c80 RCX: 00007fe2a12d61d7
[  154.858686][  T936] RDX: 0000000000000000 RSI: 00007ffedf8725c0 RDI: 0000000000000005
[  154.859115][  T936] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  154.859434][  T936] R10: 00007fe2a11d2f60 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