======================================
| [  198.450055][ T2834] ==================================================================
| [  198.450400][ T2834] 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)
| [  198.450730][ T2834] Write of size 8 at addr 0000000000000000 by task ip/2834
| [  198.451029][ T2834]
[  198.451147][ T2834] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  198.451152][ T2834] Call Trace:
[  198.451157][ T2834]  <TASK>
[  198.451160][ T2834]  dump_stack_lvl (lib/dump_stack.c:123)
[  198.451182][ T2834]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  198.451186][ T2834]  kasan_report (mm/kasan/report.c:597)
[  198.451198][ T2834]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  198.451203][ T2834]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[  198.451207][ T2834]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  198.451212][ T2834]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  198.451215][ T2834]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  198.451219][ T2834]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[  198.451223][ T2834]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  198.451232][ T2834]  __cancel_work_sync (kernel/workqueue.c:4383)
[  198.451236][ T2834]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  198.451252][ T2834]  ? netdev_notify_peers (net/core/dev.c:1891)
[  198.451256][ T2834]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  198.451265][ T2834]  __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)
[  198.451268][ T2834]  ? __free_zapped_classes (kernel/locking/lockdep.c:5343)
[  198.451278][ T2834]  ? netif_set_allmulti (net/core/dev.c:9890)
[  198.451283][ T2834]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  198.451292][ T2834]  netif_change_flags (net/core/dev.c:9989)
[  198.451296][ T2834]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[  198.451304][ T2834]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  198.451310][ T2834]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  198.451320][ T2834]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  198.451325][ T2834]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  198.451331][ T2834]  ? __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)
[  198.451335][ T2834]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  198.451338][ T2834]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  198.451346][ T2834]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  198.451349][ T2834]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  198.451353][ T2834]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  198.451362][ T2834]  ? __create_object (mm/kmemleak.c:786)
[  198.451370][ T2834]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  198.451373][ T2834]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  198.451376][ T2834]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  198.451379][ T2834]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  198.451392][ T2834]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  198.451397][ T2834]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  198.451402][ T2834]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  198.451405][ T2834]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  198.451411][ T2834]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  198.451415][ T2834]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  198.451417][ T2834]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  198.451422][ T2834]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  198.451425][ T2834]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  198.451429][ T2834]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  198.451432][ T2834]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  198.451439][ T2834]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  198.451448][ T2834]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  198.451452][ T2834]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  198.451458][ T2834]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  198.451462][ T2834]  ? 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)
[  198.451466][ T2834]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  198.451470][ T2834]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  198.451474][ T2834]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  198.451480][ T2834]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  198.451485][ T2834]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  198.451488][ T2834]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  198.451502][ T2834]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  198.451506][ T2834]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  198.451517][ T2834]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  198.451520][ T2834]  ? __copy_msghdr (net/socket.c:2556)
[  198.451528][ T2834]  ___sys_sendmsg (net/socket.c:2686)
[  198.451531][ T2834]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  198.451534][ T2834]  ? __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)
[  198.451541][ T2834]  ? copy_msghdr_from_user (net/socket.c:2673)
[  198.451546][ T2834]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  198.451551][ T2834]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  198.451557][ T2834]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  198.451560][ T2834]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  198.451573][ T2834]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  198.451580][ T2834]  __sys_sendmsg (net/socket.c:2716)
[  198.451583][ T2834]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  198.451587][ T2834]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  198.451595][ T2834]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  198.451599][ T2834]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  198.451606][ T2834]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  198.451615][ T2834] RIP: 0033:0x7fbb901bd1d7
[  198.451624][ T2834] 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)
[  198.451627][ T2834] RSP: 002b:00007ffed2a321d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  198.451634][ T2834] RAX: ffffffffffffffda RBX: 00007ffed2a32900 RCX: 00007fbb901bd1d7
[  198.451637][ T2834] RDX: 0000000000000000 RSI: 00007ffed2a32240 RDI: 0000000000000005
[  198.451639][ T2834] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  198.451641][ T2834] R10: 00007fbb900b9f60 R11: 0000000000000246 R12: 0000000000000003
[  198.451643][ T2834] R13: 00000000691cd3eb R14: 0000000000499600 R15: 0000000000000000
| [  198.471104][ T2834] #PF: error_code(0x0002) - not-present page
| [  198.471333][ T2834] PGD 59b7067 P4D 59b7067 PUD f172067 PMD 0
| [  198.471575][ T2834] Oops: Oops: 0002 [#1] SMP KASAN
| [  198.472151][ T2834] Tainted: [B]=BAD_PAGE
[  198.472295][ T2834] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  198.472533][ T2834] 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)
[  198.472790][ T2834] 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
[  198.473455][ T2834] RSP: 0018:ffffc90003c96f40 EFLAGS: 00010046
[  198.473693][ T2834] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffaa84090a
[  198.473982][ T2834] RDX: fffffbfff5d4f2cd RSI: 0000000000000008 RDI: ffffffffaea79660
[  198.474265][ T2834] RBP: ffffc90003c96fa8 R08: 0000000000000001 R09: fffffbfff5d4f2cc
[  198.474555][ T2834] R10: ffffffffaea79667 R11: ffffc90003c96a00 R12: 0000000000000000
[  198.474845][ T2834] R13: 0000000000000282 R14: ffff88800be84000 R15: dffffc0000000000
[  198.475125][ T2834] FS:  00007fbb8ffef800(0000) GS:ffff888081df2000(0000) knlGS:0000000000000000
[  198.475451][ T2834] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  198.475692][ T2834] CR2: 0000000000000000 CR3: 000000000edad006 CR4: 0000000000772ef0
[  198.475978][ T2834] PKRU: 55555554
[  198.476117][ T2834] Call Trace:
[  198.476260][ T2834]  <TASK>
[  198.476360][ T2834]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  198.476569][ T2834]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  198.476766][ T2834]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[  198.476952][ T2834]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  198.477148][ T2834]  __cancel_work_sync (kernel/workqueue.c:4383)
[  198.477335][ T2834]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  198.477526][ T2834]  ? netdev_notify_peers (net/core/dev.c:1891)
[  198.477715][ T2834]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  198.477911][ T2834]  __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)
[  198.478097][ T2834]  ? __free_zapped_classes (kernel/locking/lockdep.c:5343)
[  198.478287][ T2834]  ? netif_set_allmulti (net/core/dev.c:9890)
[  198.478475][ T2834]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  198.478663][ T2834]  netif_change_flags (net/core/dev.c:9989)
[  198.478848][ T2834]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[  198.479040][ T2834]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  198.479225][ T2834]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  198.479417][ T2834]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  198.479604][ T2834]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  198.479800][ T2834]  ? __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)
[  198.479985][ T2834]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  198.480169][ T2834]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  198.480356][ T2834]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  198.480541][ T2834]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  198.480725][ T2834]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  198.480922][ T2834]  ? __create_object (mm/kmemleak.c:786)
[  198.481132][ T2834]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  198.481324][ T2834]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  198.481507][ T2834]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  198.481693][ T2834]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  198.481888][ T2834]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  198.482074][ T2834]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  198.482260][ T2834]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  198.482446][ T2834]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  198.482630][ T2834]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  198.482828][ T2834]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  198.483012][ T2834]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  198.483197][ T2834]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  198.483383][ T2834]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  198.483569][ T2834]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  198.483756][ T2834]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  198.483946][ T2834]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  198.484131][ T2834]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  198.484326][ T2834]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  198.484514][ T2834]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  198.484717][ T2834]  ? 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)
[  198.484914][ T2834]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  198.485102][ T2834]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  198.485286][ T2834]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  198.485474][ T2834]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  198.485667][ T2834]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  198.485854][ T2834]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  198.486042][ T2834]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  198.486229][ T2834]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  198.486416][ T2834]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  198.486655][ T2834]  ? __copy_msghdr (net/socket.c:2556)
[  198.486848][ T2834]  ___sys_sendmsg (net/socket.c:2686)
[  198.487033][ T2834]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  198.487227][ T2834]  ? __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)
[  198.487463][ T2834]  ? copy_msghdr_from_user (net/socket.c:2673)
[  198.487653][ T2834]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  198.487844][ T2834]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  198.488034][ T2834]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  198.488217][ T2834]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  198.488406][ T2834]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  198.488597][ T2834]  __sys_sendmsg (net/socket.c:2716)
[  198.488787][ T2834]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  198.489016][ T2834]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  198.489206][ T2834]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  198.489390][ T2834]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  198.489581][ T2834]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  198.489929][ T2834] RIP: 0033:0x7fbb901bd1d7
[  198.490135][ T2834] 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)
[  198.490920][ T2834] RSP: 002b:00007ffed2a321d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  198.491201][ T2834] RAX: ffffffffffffffda RBX: 00007ffed2a32900 RCX: 00007fbb901bd1d7
[  198.491484][ T2834] RDX: 0000000000000000 RSI: 00007ffed2a32240 RDI: 0000000000000005
[  198.491873][ T2834] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  198.492157][ T2834] R10: 00007fbb900b9f60 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