======================================
| [  462.917939][ T1991] ==================================================================
| [  462.918295][ T1991] 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)
| [  462.918641][ T1991] Write of size 8 at addr 0000000000000000 by task ip/1991
| [  462.918952][ T1991]
[  462.919098][ T1991] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  462.919106][ T1991] Call Trace:
[  462.919111][ T1991]  <TASK>
[  462.919113][ T1991]  dump_stack_lvl (lib/dump_stack.c:123)
[  462.919139][ T1991]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  462.919142][ T1991]  kasan_report (mm/kasan/report.c:597)
[  462.919155][ T1991]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  462.919161][ T1991]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[  462.919165][ T1991]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  462.919167][ T1991]  ? __queue_work (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 kernel/workqueue.c:2350)
[  462.919172][ T1991]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  462.919175][ T1991]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  462.919179][ T1991]  ? queue_delayed_work_on (kernel/workqueue.c:2565 (discriminator 1))
[  462.919182][ T1991]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  462.919191][ T1991]  __cancel_work_sync (kernel/workqueue.c:4383)
[  462.919195][ T1991]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  462.919206][ T1991]  ? netdev_notify_peers (net/core/dev.c:1891)
[  462.919211][ T1991]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  462.919217][ T1991]  __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)
[  462.919220][ T1991]  ? find_held_lock (kernel/locking/lockdep.c:5343)
[  462.919231][ T1991]  ? netif_set_allmulti (net/core/dev.c:9890)
[  462.919233][ T1991]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  462.919241][ T1991]  netif_change_flags (net/core/dev.c:9989)
[  462.919245][ T1991]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[  462.919253][ T1991]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  462.919259][ T1991]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  462.919269][ T1991]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  462.919274][ T1991]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  462.919279][ T1991]  ? __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)
[  462.919284][ T1991]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  462.919287][ T1991]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  462.919294][ T1991]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  462.919297][ T1991]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  462.919301][ T1991]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  462.919320][ T1991]  ? __create_object (mm/kmemleak.c:786)
[  462.919325][ T1991]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  462.919328][ T1991]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  462.919331][ T1991]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  462.919335][ T1991]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  462.919351][ T1991]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  462.919356][ T1991]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  462.919361][ T1991]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  462.919364][ T1991]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  462.919370][ T1991]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  462.919373][ T1991]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  462.919377][ T1991]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  462.919383][ T1991]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  462.919386][ T1991]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  462.919389][ T1991]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  462.919392][ T1991]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  462.919400][ T1991]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  462.919409][ T1991]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  462.919413][ T1991]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  462.919420][ T1991]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  462.919423][ T1991]  ? 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)
[  462.919427][ T1991]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  462.919431][ T1991]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  462.919435][ T1991]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  462.919441][ T1991]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  462.919445][ T1991]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  462.919451][ T1991]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  462.919465][ T1991]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  462.919469][ T1991]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  462.919475][ T1991]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  462.919478][ T1991]  ? __copy_msghdr (net/socket.c:2556)
[  462.919486][ T1991]  ___sys_sendmsg (net/socket.c:2686)
[  462.919489][ T1991]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  462.919492][ T1991]  ? __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)
[  462.919501][ T1991]  ? copy_msghdr_from_user (net/socket.c:2673)
[  462.919506][ T1991]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  462.919510][ T1991]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  462.919516][ T1991]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  462.919519][ T1991]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  462.919533][ T1991]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  462.919539][ T1991]  __sys_sendmsg (net/socket.c:2716)
[  462.919542][ T1991]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  462.919547][ T1991]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  462.919555][ T1991]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  462.919559][ T1991]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  462.919565][ T1991]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  462.919574][ T1991] RIP: 0033:0x7fba521571d7
[  462.919580][ T1991] 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)
[  462.919585][ T1991] RSP: 002b:00007ffd37999678 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  462.919594][ T1991] RAX: ffffffffffffffda RBX: 00007ffd37999da0 RCX: 00007fba521571d7
[  462.919596][ T1991] RDX: 0000000000000000 RSI: 00007ffd379996e0 RDI: 0000000000000005
[  462.919598][ T1991] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  462.919600][ T1991] R10: 00007fba52053f60 R11: 0000000000000246 R12: 0000000000000003
[  462.919603][ T1991] R13: 00000000691cbc27 R14: 0000000000499600 R15: 0000000000000000
| [  462.938163][ T1991] #PF: error_code(0x0002) - not-present page
| [  462.938398][ T1991] PGD 4c8d067 P4D 4c8d067 PUD 4b8b067 PMD 0
| [  462.938646][ T1991] Oops: Oops: 0002 [#1] SMP KASAN
| [  462.939219][ T1991] Tainted: [B]=BAD_PAGE
[  462.939365][ T1991] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  462.939598][ T1991] 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)
[  462.939847][ T1991] 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
[  462.940515][ T1991] RSP: 0018:ffffc900018fef40 EFLAGS: 00010046
[  462.940759][ T1991] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffb324090a
[  462.941041][ T1991] RDX: fffffbfff6e8f2cd RSI: 0000000000000008 RDI: ffffffffb7479660
[  462.941327][ T1991] RBP: ffffc900018fefa8 R08: 0000000000000001 R09: fffffbfff6e8f2cc
[  462.941605][ T1991] R10: ffffffffb7479667 R11: ffffc900018fea00 R12: 0000000000000000
[  462.941886][ T1991] R13: 0000000000000282 R14: ffff888007d44000 R15: dffffc0000000000
[  462.942164][ T1991] FS:  00007fba51f89800(0000) GS:ffff88807edf2000(0000) knlGS:0000000000000000
[  462.942493][ T1991] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  462.942733][ T1991] CR2: 0000000000000000 CR3: 0000000008c4c006 CR4: 0000000000772ef0
[  462.943018][ T1991] PKRU: 55555554
[  462.943160][ T1991] Call Trace:
[  462.943305][ T1991]  <TASK>
[  462.943404][ T1991]  ? __queue_work (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 kernel/workqueue.c:2350)
[  462.943606][ T1991]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  462.943802][ T1991]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  462.943993][ T1991]  ? queue_delayed_work_on (kernel/workqueue.c:2565 (discriminator 1))
[  462.944175][ T1991]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  462.944385][ T1991]  __cancel_work_sync (kernel/workqueue.c:4383)
[  462.944572][ T1991]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  462.944763][ T1991]  ? netdev_notify_peers (net/core/dev.c:1891)
[  462.944953][ T1991]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  462.945139][ T1991]  __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)
[  462.945336][ T1991]  ? find_held_lock (kernel/locking/lockdep.c:5343)
[  462.945523][ T1991]  ? netif_set_allmulti (net/core/dev.c:9890)
[  462.945709][ T1991]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  462.945898][ T1991]  netif_change_flags (net/core/dev.c:9989)
[  462.946086][ T1991]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[  462.946274][ T1991]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  462.946460][ T1991]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  462.946663][ T1991]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  462.946849][ T1991]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  462.947036][ T1991]  ? __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)
[  462.947330][ T1991]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  462.947521][ T1991]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  462.947714][ T1991]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  462.947902][ T1991]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  462.948191][ T1991]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  462.948385][ T1991]  ? __create_object (mm/kmemleak.c:786)
[  462.948598][ T1991]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  462.948769][ T1991]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  462.949077][ T1991]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  462.949267][ T1991]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  462.949459][ T1991]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  462.949648][ T1991]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  462.949831][ T1991]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  462.950019][ T1991]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  462.950205][ T1991]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  462.950393][ T1991]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  462.950696][ T1991]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  462.950866][ T1991]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  462.951071][ T1991]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  462.951255][ T1991]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  462.951550][ T1991]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  462.951744][ T1991]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  462.951929][ T1991]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  462.952111][ T1991]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  462.952408][ T1991]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  462.952596][ T1991]  ? 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)
[  462.952782][ T1991]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  462.952967][ T1991]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  462.953266][ T1991]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  462.953478][ T1991]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  462.953663][ T1991]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  462.953852][ T1991]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  462.954154][ T1991]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  462.954359][ T1991]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  462.954547][ T1991]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  462.954767][ T1991]  ? __copy_msghdr (net/socket.c:2556)
[  462.955097][ T1991]  ___sys_sendmsg (net/socket.c:2686)
[  462.955284][ T1991]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  462.955476][ T1991]  ? __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)
[  462.955708][ T1991]  ? copy_msghdr_from_user (net/socket.c:2673)
[  462.956002][ T1991]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  462.956187][ T1991]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  462.956373][ T1991]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  462.956559][ T1991]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  462.956852][ T1991]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  462.957037][ T1991]  __sys_sendmsg (net/socket.c:2716)
[  462.957221][ T1991]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  462.957552][ T1991]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  462.957748][ T1991]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  462.957932][ T1991]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  462.958121][ T1991]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  462.958459][ T1991] RIP: 0033:0x7fba521571d7
[  462.958660][ T1991] 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)
[  462.959450][ T1991] RSP: 002b:00007ffd37999678 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  462.959736][ T1991] RAX: ffffffffffffffda RBX: 00007ffd37999da0 RCX: 00007fba521571d7
[  462.960015][ T1991] RDX: 0000000000000000 RSI: 00007ffd379996e0 RDI: 0000000000000005
[  462.960402][ T1991] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  462.960688][ T1991] R10: 00007fba52053f60 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