======================================
| [  148.850878][  T750] ==================================================================
| [  148.851231][  T750] 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)
| [  148.851523][  T750] Write of size 8 at addr 0000000000000000 by task ip/750
| [  148.851756][  T750]
[  148.851866][  T750] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  148.851869][  T750] Call Trace:
[  148.851871][  T750]  <TASK>
[  148.851873][  T750]  dump_stack_lvl (lib/dump_stack.c:123)
[  148.851883][  T750]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  148.851887][  T750]  kasan_report (mm/kasan/report.c:597)
[  148.851898][  T750]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  148.851903][  T750]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[  148.851907][  T750]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  148.851912][  T750]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  148.851915][  T750]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  148.851919][  T750]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[  148.851922][  T750]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  148.851930][  T750]  __cancel_work_sync (kernel/workqueue.c:4383)
[  148.851934][  T750]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  148.851944][  T750]  ? netdev_notify_peers (net/core/dev.c:1891)
[  148.851948][  T750]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  148.851957][  T750]  netif_close_many (net/core/dev.c:1959)
[  148.851961][  T750]  ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186)
[  148.851968][  T750]  ? __dev_close_many (net/core/dev.c:1949)
[  148.851971][  T750]  ? dev_getbyhwaddr_rcu (net/core/dev.c:10950)
[  148.851976][  T750]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  148.851985][  T750]  __dev_change_net_namespace (./include/linux/list.h:119 ./include/linux/list.h:223 ./include/linux/list.h:237 net/core/dev.c:1975 net/core/dev.c:1968 net/core/dev.c:12746)
[  148.851995][  T750]  ? default_device_exit_batch (net/core/dev.c:12662)
[  148.851998][  T750]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  148.852002][  T750]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  148.852007][  T750]  ? rtnl_af_lookup (net/core/rtnetlink.c:2675)
[  148.852012][  T750]  ? is_bpf_text_address (kernel/bpf/core.c:749)
[  148.852025][  T750]  ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94)
[  148.852033][  T750]  do_setlink.constprop.0 (net/core/rtnetlink.c:3060)
[  148.852039][  T750]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  148.852045][  T750]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  148.852052][  T750]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  148.852057][  T750]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  148.852062][  T750]  ? __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)
[  148.852067][  T750]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  148.852070][  T750]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  148.852078][  T750]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  148.852081][  T750]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  148.852084][  T750]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  148.852088][  T750]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  148.852092][  T750]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  148.852095][  T750]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  148.852098][  T750]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  148.852104][  T750]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  148.852109][  T750]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  148.852114][  T750]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  148.852117][  T750]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  148.852123][  T750]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  148.852127][  T750]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  148.852129][  T750]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  148.852134][  T750]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  148.852136][  T750]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  148.852140][  T750]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  148.852143][  T750]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  148.852150][  T750]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  148.852156][  T750]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  148.852159][  T750]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  148.852166][  T750]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  148.852169][  T750]  ? 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)
[  148.852173][  T750]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  148.852177][  T750]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  148.852181][  T750]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  148.852187][  T750]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  148.852191][  T750]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  148.852195][  T750]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  148.852201][  T750]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  148.852204][  T750]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  148.852210][  T750]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  148.852213][  T750]  ? __copy_msghdr (net/socket.c:2556)
[  148.852221][  T750]  ___sys_sendmsg (net/socket.c:2686)
[  148.852224][  T750]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  148.852227][  T750]  ? __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)
[  148.852233][  T750]  ? copy_msghdr_from_user (net/socket.c:2673)
[  148.852238][  T750]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  148.852243][  T750]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  148.852249][  T750]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  148.852252][  T750]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  148.852265][  T750]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  148.852271][  T750]  __sys_sendmsg (net/socket.c:2716)
[  148.852274][  T750]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  148.852278][  T750]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  148.852286][  T750]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  148.852290][  T750]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  148.852297][  T750]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  148.852305][  T750] RIP: 0033:0x7fcdb95301d7
[  148.852310][  T750] 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)
[  148.852313][  T750] RSP: 002b:00007ffe643a72a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  148.852317][  T750] RAX: ffffffffffffffda RBX: 00007ffe643a79d0 RCX: 00007fcdb95301d7
[  148.852320][  T750] RDX: 0000000000000000 RSI: 00007ffe643a7310 RDI: 0000000000000005
[  148.852322][  T750] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[  148.852323][  T750] R10: 00007fcdb942cf60 R11: 0000000000000246 R12: 0000000000000004
[  148.852325][  T750] R13: 00000000691cd618 R14: 0000000000499600 R15: 0000000000000000
| [  148.873591][  T750] #PF: error_code(0x0002) - not-present page
| [  148.873817][  T750] PGD 93c2067 P4D 93c2067 PUD c74e067 PMD 0
| [  148.874065][  T750] Oops: Oops: 0002 [#1] SMP KASAN
| [  148.874736][  T750] Tainted: [B]=BAD_PAGE
[  148.874873][  T750] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  148.875223][  T750] 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)
[  148.875463][  T750] 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
[  148.876210][  T750] RSP: 0018:ffffc90000d56dd0 EFLAGS: 00010046
[  148.876444][  T750] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff9944090a
[  148.876716][  T750] RDX: fffffbfff3acf2cd RSI: 0000000000000008 RDI: ffffffff9d679660
[  148.877121][  T750] RBP: ffffc90000d56e38 R08: 0000000000000001 R09: fffffbfff3acf2cc
[  148.877381][  T750] R10: ffffffff9d679667 R11: ffffc90000d568c0 R12: 0000000000000000
[  148.877777][  T750] R13: 0000000000000282 R14: ffff88800aa69000 R15: dffffc0000000000
[  148.878046][  T750] FS:  00007fcdb9362800(0000) GS:ffff888098c72000(0000) knlGS:0000000000000000
[  148.878354][  T750] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  148.878681][  T750] CR2: 0000000000000000 CR3: 000000000e698003 CR4: 0000000000772ef0
[  148.878948][  T750] PKRU: 55555554
[  148.879096][  T750] Call Trace:
[  148.879226][  T750]  <TASK>
[  148.879423][  T750]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  148.879596][  T750]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  148.879783][  T750]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[  148.879978][  T750]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  148.880279][  T750]  __cancel_work_sync (kernel/workqueue.c:4383)
[  148.880461][  T750]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  148.880643][  T750]  ? netdev_notify_peers (net/core/dev.c:1891)
[  148.880824][  T750]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  148.881126][  T750]  netif_close_many (net/core/dev.c:1959)
[  148.881315][  T750]  ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186)
[  148.881486][  T750]  ? __dev_close_many (net/core/dev.c:1949)
[  148.881676][  T750]  ? dev_getbyhwaddr_rcu (net/core/dev.c:10950)
[  148.881962][  T750]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  148.882162][  T750]  __dev_change_net_namespace (./include/linux/list.h:119 ./include/linux/list.h:223 ./include/linux/list.h:237 net/core/dev.c:1975 net/core/dev.c:1968 net/core/dev.c:12746)
[  148.882383][  T750]  ? default_device_exit_batch (net/core/dev.c:12662)
[  148.882602][  T750]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  148.882893][  T750]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  148.883089][  T750]  ? rtnl_af_lookup (net/core/rtnetlink.c:2675)
[  148.883267][  T750]  ? is_bpf_text_address (kernel/bpf/core.c:749)
[  148.883437][  T750]  ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94)
[  148.883733][  T750]  do_setlink.constprop.0 (net/core/rtnetlink.c:3060)
[  148.883915][  T750]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  148.884120][  T750]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  148.884301][  T750]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  148.884586][  T750]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  148.884775][  T750]  ? __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)
[  148.884956][  T750]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  148.885144][  T750]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  148.885451][  T750]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  148.885632][  T750]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  148.885831][  T750]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  148.886013][  T750]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  148.886306][  T750]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  148.886486][  T750]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  148.886664][  T750]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  148.886840][  T750]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  148.887144][  T750]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  148.887312][  T750]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  148.887507][  T750]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  148.887692][  T750]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  148.887975][  T750]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  148.888171][  T750]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  148.888341][  T750]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  148.888519][  T750]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  148.888806][  T750]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  148.888992][  T750]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  148.889182][  T750]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  148.889364][  T750]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  148.889650][  T750]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  148.889836][  T750]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  148.890026][  T750]  ? 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)
[  148.890212][  T750]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  148.890493][  T750]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  148.890666][  T750]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  148.890851][  T750]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  148.891042][  T750]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  148.891322][  T750]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  148.891504][  T750]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  148.891689][  T750]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  148.891868][  T750]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  148.892203][  T750]  ? __copy_msghdr (net/socket.c:2556)
[  148.892375][  T750]  ___sys_sendmsg (net/socket.c:2686)
[  148.892567][  T750]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  148.892856][  T750]  ? __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)
[  148.893087][  T750]  ? copy_msghdr_from_user (net/socket.c:2673)
[  148.893259][  T750]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  148.893427][  T750]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  148.893717][  T750]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  148.893898][  T750]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  148.894094][  T750]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  148.894268][  T750]  __sys_sendmsg (net/socket.c:2716)
[  148.894541][  T750]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  148.894760][  T750]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  148.894966][  T750]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  148.895171][  T750]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  148.895448][  T750]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  148.895690][  T750] RIP: 0033:0x7fcdb95301d7
[  148.895875][  T750] 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)
[  148.896620][  T750] RSP: 002b:00007ffe643a72a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  148.896889][  T750] RAX: ffffffffffffffda RBX: 00007ffe643a79d0 RCX: 00007fcdb95301d7
[  148.897285][  T750] RDX: 0000000000000000 RSI: 00007ffe643a7310 RDI: 0000000000000005
[  148.897552][  T750] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[  148.897922][  T750] R10: 00007fcdb942cf60 R11: 0000000000000246 R12: 0000000000000004


Finger prints:
try_to_grab_pending:__cancel_work:__cancel_work_sync:__dev_close_many:netif_close_many
kasan_report:kasan_check_range:try_to_grab_pending:__cancel_work:__cancel_work_sync