======================================
| [   20.953141][  T277] ==================================================================
| [   20.953463][  T277] 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)
| [   20.953752][  T277] Write of size 8 at addr 0000000000000000 by task ip/277
| [   20.953992][  T277]
[   20.954095][  T277] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.954097][  T277] Call Trace:
[   20.954099][  T277]  <TASK>
[   20.954101][  T277]  dump_stack_lvl (lib/dump_stack.c:123)
[   20.954109][  T277]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   20.954112][  T277]  kasan_report (mm/kasan/report.c:597)
[   20.954118][  T277]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   20.954123][  T277]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   20.954126][  T277]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   20.954130][  T277]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   20.954133][  T277]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   20.954137][  T277]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   20.954141][  T277]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   20.954148][  T277]  __cancel_work_sync (kernel/workqueue.c:4383)
[   20.954151][  T277]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   20.954158][  T277]  ? netdev_notify_peers (net/core/dev.c:1891)
[   20.954162][  T277]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   20.954167][  T277]  __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)
[   20.954171][  T277]  ? netif_set_allmulti (net/core/dev.c:9890)
[   20.954174][  T277]  ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 kernel/bpf/core.c:746)
[   20.954182][  T277]  netif_change_flags (net/core/dev.c:9989)
[   20.954184][  T277]  ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94)
[   20.954190][  T277]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[   20.954196][  T277]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   20.954201][  T277]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.954207][  T277]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   20.954214][  T277]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.954222][  T277]  ? __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)
[   20.954228][  T277]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   20.954232][  T277]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.954238][  T277]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.954240][  T277]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   20.954243][  T277]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   20.954247][  T277]  ? __create_object (mm/kmemleak.c:786)
[   20.954250][  T277]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.954253][  T277]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   20.954256][  T277]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   20.954260][  T277]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   20.954264][  T277]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   20.954270][  T277]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   20.954275][  T277]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   20.954278][  T277]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.954283][  T277]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.954287][  T277]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   20.954289][  T277]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.954294][  T277]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   20.954297][  T277]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   20.954300][  T277]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.954303][  T277]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.954310][  T277]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   20.954314][  T277]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.954318][  T277]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   20.954324][  T277]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   20.954328][  T277]  ? 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)
[   20.954332][  T277]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   20.954336][  T277]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   20.954340][  T277]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.954345][  T277]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   20.954349][  T277]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.954352][  T277]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   20.954357][  T277]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.954360][  T277]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   20.954366][  T277]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   20.954369][  T277]  ? __copy_msghdr (net/socket.c:2556)
[   20.954376][  T277]  ___sys_sendmsg (net/socket.c:2686)
[   20.954378][  T277]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   20.954380][  T277]  ? __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)
[   20.954385][  T277]  ? copy_msghdr_from_user (net/socket.c:2673)
[   20.954389][  T277]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.954394][  T277]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.954399][  T277]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.954403][  T277]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   20.954407][  T277]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.954414][  T277]  __sys_sendmsg (net/socket.c:2716)
[   20.954416][  T277]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   20.954420][  T277]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   20.954426][  T277]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.954430][  T277]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   20.954434][  T277]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   20.954437][  T277] RIP: 0033:0x7fac0440d1d7
[   20.954442][  T277] 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)
[   20.954444][  T277] RSP: 002b:00007ffe0525ea48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.954448][  T277] RAX: ffffffffffffffda RBX: 00007ffe0525f170 RCX: 00007fac0440d1d7
[   20.954450][  T277] RDX: 0000000000000000 RSI: 00007ffe0525eab0 RDI: 0000000000000005
[   20.954452][  T277] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[   20.954454][  T277] R10: 00007fac04309f60 R11: 0000000000000246 R12: 0000000000000002
[   20.954455][  T277] R13: 00000000691cd79d R14: 0000000000499600 R15: 0000000000000000
| [   20.973164][  T277] #PF: error_code(0x0002) - not-present page
| [   20.973385][  T277] PGD bc67067 P4D bc67067 PUD 50e6067 PMD 0
| [   20.973608][  T277] Oops: Oops: 0002 [#1] SMP KASAN
| [   20.974153][  T277] Tainted: [B]=BAD_PAGE
[   20.974290][  T277] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.974507][  T277] 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)
[   20.974734][  T277] 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 af 80 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 af 80 81 00       	call   0x8180d9
  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
[   20.975356][  T277] RSP: 0018:ffffc90000c76f30 EFLAGS: 00010046
[   20.975573][  T277] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffaee4390a
[   20.975852][  T277] RDX: fffffbfff665d4cd RSI: 0000000000000008 RDI: ffffffffb32ea660
[   20.976120][  T277] RBP: ffffc90000c76f98 R08: 0000000000000001 R09: fffffbfff665d4cc
[   20.976385][  T277] R10: ffffffffb32ea667 R11: ffffc90000c76a00 R12: 0000000000000000
[   20.976661][  T277] R13: 0000000000000286 R14: ffff888007eec000 R15: dffffc0000000000
[   20.976944][  T277] FS:  00007fac0423f800(0000) GS:ffff888083081000(0000) knlGS:0000000000000000
[   20.977270][  T277] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.977485][  T277] CR2: 0000000000000000 CR3: 000000000ca68004 CR4: 0000000000772ef0
[   20.977755][  T277] PKRU: 55555554
[   20.977895][  T277] Call Trace:
[   20.978033][  T277]  <TASK>
[   20.978127][  T277]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   20.978308][  T277]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   20.978479][  T277]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   20.978645][  T277]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   20.978834][  T277]  __cancel_work_sync (kernel/workqueue.c:4383)
[   20.979030][  T277]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   20.979205][  T277]  ? netdev_notify_peers (net/core/dev.c:1891)
[   20.979397][  T277]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   20.979564][  T277]  __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)
[   20.979738][  T277]  ? netif_set_allmulti (net/core/dev.c:9890)
[   20.979919][  T277]  ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 kernel/bpf/core.c:746)
[   20.980101][  T277]  netif_change_flags (net/core/dev.c:9989)
[   20.980279][  T277]  ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94)
[   20.980450][  T277]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[   20.980626][  T277]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   20.980817][  T277]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.980999][  T277]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   20.981175][  T277]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.981355][  T277]  ? __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)
[   20.981554][  T277]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   20.981737][  T277]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.981929][  T277]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.982111][  T277]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   20.982283][  T277]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   20.982453][  T277]  ? __create_object (mm/kmemleak.c:786)
[   20.982625][  T277]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.982807][  T277]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   20.982988][  T277]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   20.983166][  T277]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   20.983347][  T277]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   20.983532][  T277]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   20.983700][  T277]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   20.983898][  T277]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.984082][  T277]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.984259][  T277]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   20.984426][  T277]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.984607][  T277]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   20.984790][  T277]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   20.985005][  T277]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.985222][  T277]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.985423][  T277]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   20.985611][  T277]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.985816][  T277]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   20.986016][  T277]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   20.986195][  T277]  ? 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)
[   20.986378][  T277]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   20.986547][  T277]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   20.986773][  T277]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.986952][  T277]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   20.987134][  T277]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.987309][  T277]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   20.987484][  T277]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.987665][  T277]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   20.987897][  T277]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   20.988118][  T277]  ? __copy_msghdr (net/socket.c:2556)
[   20.988297][  T277]  ___sys_sendmsg (net/socket.c:2686)
[   20.988488][  T277]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   20.988664][  T277]  ? __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)
[   20.988913][  T277]  ? copy_msghdr_from_user (net/socket.c:2673)
[   20.989109][  T277]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.989289][  T277]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.989463][  T277]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.989632][  T277]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   20.989827][  T277]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.990007][  T277]  __sys_sendmsg (net/socket.c:2716)
[   20.990187][  T277]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   20.990424][  T277]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   20.990613][  T277]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.990814][  T277]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   20.990999][  T277]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   20.991225][  T277] RIP: 0033:0x7fac0440d1d7
[   20.991408][  T277] 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)
[   20.992072][  T277] RSP: 002b:00007ffe0525ea48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.992345][  T277] RAX: ffffffffffffffda RBX: 00007ffe0525f170 RCX: 00007fac0440d1d7
[   20.992599][  T277] RDX: 0000000000000000 RSI: 00007ffe0525eab0 RDI: 0000000000000005
[   20.992877][  T277] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[   20.993155][  T277] R10: 00007fac04309f60 R11: 0000000000000246 R12: 0000000000000002


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