======================================
| [  445.445864][ T4263] ==================================================================
| [  445.446241][ T4263] 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)
| [  445.446594][ T4263] Write of size 8 at addr 0000000000000000 by task ip/4263
| [  445.446913][ T4263]
[  445.447052][ T4263] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  445.447058][ T4263] Call Trace:
[  445.447062][ T4263]  <TASK>
[  445.447064][ T4263]  dump_stack_lvl (lib/dump_stack.c:123)
[  445.447083][ T4263]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  445.447087][ T4263]  kasan_report (mm/kasan/report.c:597)
[  445.447097][ T4263]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  445.447102][ T4263]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[  445.447106][ T4263]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  445.447111][ T4263]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  445.447115][ T4263]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  445.447119][ T4263]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[  445.447122][ T4263]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  445.447129][ T4263]  __cancel_work_sync (kernel/workqueue.c:4383)
[  445.447133][ T4263]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  445.447146][ T4263]  ? netdev_notify_peers (net/core/dev.c:1891)
[  445.447150][ T4263]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  445.447160][ T4263]  netif_close_many (net/core/dev.c:1959)
[  445.447164][ T4263]  ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186)
[  445.447179][ T4263]  ? __dev_close_many (net/core/dev.c:1949)
[  445.447182][ T4263]  ? dev_getbyhwaddr_rcu (net/core/dev.c:10950)
[  445.447186][ T4263]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  445.447195][ T4263]  __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)
[  445.447206][ T4263]  ? default_device_exit_batch (net/core/dev.c:12662)
[  445.447209][ T4263]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  445.447213][ T4263]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  445.447220][ T4263]  ? rtnl_af_lookup (net/core/rtnetlink.c:2675)
[  445.447226][ T4263]  ? is_bpf_text_address (kernel/bpf/core.c:749)
[  445.447235][ T4263]  ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94)
[  445.447242][ T4263]  do_setlink.constprop.0 (net/core/rtnetlink.c:3060)
[  445.447247][ T4263]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  445.447253][ T4263]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  445.447262][ T4263]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  445.447270][ T4263]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  445.447275][ T4263]  ? __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)
[  445.447281][ T4263]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  445.447287][ T4263]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  445.447293][ T4263]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  445.447297][ T4263]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  445.447302][ T4263]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  445.447306][ T4263]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  445.447310][ T4263]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  445.447313][ T4263]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  445.447316][ T4263]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  445.447325][ T4263]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  445.447330][ T4263]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  445.447335][ T4263]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  445.447338][ T4263]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  445.447344][ T4263]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  445.447347][ T4263]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  445.447350][ T4263]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  445.447354][ T4263]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  445.447357][ T4263]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  445.447361][ T4263]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  445.447363][ T4263]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  445.447370][ T4263]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  445.447376][ T4263]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  445.447380][ T4263]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  445.447388][ T4263]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  445.447393][ T4263]  ? 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)
[  445.447399][ T4263]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  445.447405][ T4263]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  445.447411][ T4263]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  445.447419][ T4263]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  445.447423][ T4263]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  445.447427][ T4263]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  445.447439][ T4263]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  445.447443][ T4263]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  445.447454][ T4263]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  445.447457][ T4263]  ? __copy_msghdr (net/socket.c:2556)
[  445.447464][ T4263]  ___sys_sendmsg (net/socket.c:2686)
[  445.447467][ T4263]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  445.447471][ T4263]  ? __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)
[  445.447478][ T4263]  ? copy_msghdr_from_user (net/socket.c:2673)
[  445.447483][ T4263]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  445.447488][ T4263]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  445.447494][ T4263]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  445.447497][ T4263]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  445.447505][ T4263]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  445.447512][ T4263]  __sys_sendmsg (net/socket.c:2716)
[  445.447516][ T4263]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  445.447520][ T4263]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  445.447528][ T4263]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  445.447532][ T4263]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  445.447537][ T4263]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  445.447545][ T4263] RIP: 0033:0x7f7cd0d2f1d7
[  445.447549][ T4263] 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)
[  445.447553][ T4263] RSP: 002b:00007fffcf54af08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  445.447560][ T4263] RAX: ffffffffffffffda RBX: 00007fffcf54b630 RCX: 00007f7cd0d2f1d7
[  445.447563][ T4263] RDX: 0000000000000000 RSI: 00007fffcf54af70 RDI: 0000000000000005
[  445.447565][ T4263] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[  445.447567][ T4263] R10: 00007f7cd0c2bf60 R11: 0000000000000246 R12: 0000000000000004
[  445.447569][ T4263] R13: 00000000691cd12f R14: 0000000000499600 R15: 0000000000000000
| [  445.469414][ T4263] #PF: error_code(0x0002) - not-present page
| [  445.469668][ T4263] PGD 9228067 P4D 9228067 PUD e997067 PMD 0
| [  445.469943][ T4263] Oops: Oops: 0002 [#1] SMP KASAN
| [  445.470604][ T4263] Tainted: [B]=BAD_PAGE
[  445.470748][ T4263] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  445.471022][ T4263] 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)
[  445.471293][ T4263] 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
[  445.472024][ T4263] RSP: 0018:ffffc900090fedd0 EFLAGS: 00010046
[  445.472287][ T4263] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff9764090a
[  445.472606][ T4263] RDX: fffffbfff370f2cd RSI: 0000000000000008 RDI: ffffffff9b879660
[  445.472909][ T4263] RBP: ffffc900090fee38 R08: 0000000000000001 R09: fffffbfff370f2cc
[  445.473243][ T4263] R10: ffffffff9b879667 R11: ffffc900090fe8c0 R12: 0000000000000000
[  445.473562][ T4263] R13: 0000000000000282 R14: ffff888008fd1000 R15: dffffc0000000000
[  445.473857][ T4263] FS:  00007f7cd0b61800(0000) GS:ffff88809aa72000(0000) knlGS:0000000000000000
[  445.474203][ T4263] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  445.474462][ T4263] CR2: 0000000000000000 CR3: 000000000240d004 CR4: 0000000000772ef0
[  445.474752][ T4263] PKRU: 55555554
[  445.474908][ T4263] Call Trace:
[  445.475067][ T4263]  <TASK>
[  445.475172][ T4263]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  445.475378][ T4263]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  445.475578][ T4263]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[  445.475763][ T4263]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  445.475966][ T4263]  __cancel_work_sync (kernel/workqueue.c:4383)
[  445.476175][ T4263]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  445.476376][ T4263]  ? netdev_notify_peers (net/core/dev.c:1891)
[  445.476575][ T4263]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  445.476767][ T4263]  netif_close_many (net/core/dev.c:1959)
[  445.476980][ T4263]  ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186)
[  445.477179][ T4263]  ? __dev_close_many (net/core/dev.c:1949)
[  445.477504][ T4263]  ? dev_getbyhwaddr_rcu (net/core/dev.c:10950)
[  445.477699][ T4263]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  445.477919][ T4263]  __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)
[  445.478173][ T4263]  ? default_device_exit_batch (net/core/dev.c:12662)
[  445.478535][ T4263]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  445.478724][ T4263]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  445.478931][ T4263]  ? rtnl_af_lookup (net/core/rtnetlink.c:2675)
[  445.479133][ T4263]  ? is_bpf_text_address (kernel/bpf/core.c:749)
[  445.479448][ T4263]  ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94)
[  445.479643][ T4263]  do_setlink.constprop.0 (net/core/rtnetlink.c:3060)
[  445.479843][ T4263]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  445.480063][ T4263]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  445.480361][ T4263]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  445.480562][ T4263]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  445.480750][ T4263]  ? __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)
[  445.480965][ T4263]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  445.481168][ T4263]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  445.481363][ T4263]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  445.481558][ T4263]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  445.481746][ T4263]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  445.482082][ T4263]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  445.482269][ T4263]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  445.482473][ T4263]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  445.482669][ T4263]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  445.482996][ T4263]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  445.483210][ T4263]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  445.483414][ T4263]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  445.483606][ T4263]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  445.483928][ T4263]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  445.484131][ T4263]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  445.484344][ T4263]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  445.484578][ T4263]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  445.484901][ T4263]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  445.485105][ T4263]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  445.485299][ T4263]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  445.485504][ T4263]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  445.485805][ T4263]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  445.486035][ T4263]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  445.486241][ T4263]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  445.486458][ T4263]  ? 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)
[  445.486765][ T4263]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  445.486979][ T4263]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  445.487184][ T4263]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  445.487390][ T4263]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  445.487692][ T4263]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  445.487894][ T4263]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  445.488093][ T4263]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  445.488305][ T4263]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  445.488627][ T4263]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  445.488859][ T4263]  ? __copy_msghdr (net/socket.c:2556)
[  445.489071][ T4263]  ___sys_sendmsg (net/socket.c:2686)
[  445.489367][ T4263]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  445.489577][ T4263]  ? __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)
[  445.489817][ T4263]  ? copy_msghdr_from_user (net/socket.c:2673)
[  445.490034][ T4263]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  445.490333][ T4263]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  445.490535][ T4263]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  445.490717][ T4263]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  445.490924][ T4263]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  445.491233][ T4263]  __sys_sendmsg (net/socket.c:2716)
[  445.491452][ T4263]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  445.491693][ T4263]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  445.491894][ T4263]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  445.492216][ T4263]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  445.492451][ T4263]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  445.492661][ T4263] RIP: 0033:0x7f7cd0d2f1d7
[  445.492854][ T4263] 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)
[  445.493675][ T4263] RSP: 002b:00007fffcf54af08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  445.494091][ T4263] RAX: ffffffffffffffda RBX: 00007fffcf54b630 RCX: 00007f7cd0d2f1d7
[  445.494361][ T4263] RDX: 0000000000000000 RSI: 00007fffcf54af70 RDI: 0000000000000005
[  445.494639][ T4263] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[  445.495062][ T4263] R10: 00007f7cd0c2bf60 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