======================================
| [  111.638898][  T840] ==================================================================
| [  111.639197][  T840] 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)
| [  111.639495][  T840] Write of size 8 at addr 0000000000000000 by task ip/840
| [  111.639729][  T840]
[  111.639832][  T840] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  111.639836][  T840] Call Trace:
[  111.639840][  T840]  <TASK>
[  111.639842][  T840]  dump_stack_lvl (lib/dump_stack.c:123)
[  111.639858][  T840]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  111.639862][  T840]  kasan_report (mm/kasan/report.c:597)
[  111.639872][  T840]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  111.639880][  T840]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[  111.639883][  T840]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  111.639886][  T840]  ? __ipv6_dev_mc_dec (net/ipv6/mcast.c:1008)
[  111.639892][  T840]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  111.639895][  T840]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  111.639898][  T840]  ? br_multicast_leave_snoopers (net/bridge/br_multicast.c:4220) bridge
[  111.639934][  T840]  ? br_multicast_join_snoopers (net/bridge/br_multicast.c:4220) bridge
[  111.639966][  T840]  __cancel_work_sync (kernel/workqueue.c:4383)
[  111.639970][  T840]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  111.639976][  T840]  ? netdev_notify_peers (net/core/dev.c:1891)
[  111.639980][  T840]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  111.639987][  T840]  __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)
[  111.639990][  T840]  ? find_held_lock (kernel/locking/lockdep.c:5343)
[  111.639996][  T840]  ? netif_set_allmulti (net/core/dev.c:9890)
[  111.639998][  T840]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  111.640006][  T840]  netif_change_flags (net/core/dev.c:9989)
[  111.640010][  T840]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[  111.640015][  T840]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  111.640020][  T840]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  111.640029][  T840]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  111.640034][  T840]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  111.640039][  T840]  ? __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)
[  111.640043][  T840]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  111.640046][  T840]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  111.640050][  T840]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  111.640053][  T840]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  111.640056][  T840]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  111.640065][  T840]  ? __create_object (mm/kmemleak.c:786)
[  111.640070][  T840]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  111.640073][  T840]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  111.640077][  T840]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  111.640080][  T840]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  111.640086][  T840]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  111.640091][  T840]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  111.640096][  T840]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  111.640099][  T840]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  111.640105][  T840]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  111.640108][  T840]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  111.640111][  T840]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  111.640115][  T840]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  111.640118][  T840]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  111.640122][  T840]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  111.640124][  T840]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  111.640132][  T840]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  111.640136][  T840]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  111.640140][  T840]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  111.640147][  T840]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  111.640150][  T840]  ? 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)
[  111.640154][  T840]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  111.640158][  T840]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  111.640162][  T840]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  111.640167][  T840]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  111.640172][  T840]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  111.640176][  T840]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  111.640182][  T840]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  111.640185][  T840]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  111.640191][  T840]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  111.640194][  T840]  ? __copy_msghdr (net/socket.c:2556)
[  111.640202][  T840]  ___sys_sendmsg (net/socket.c:2686)
[  111.640205][  T840]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  111.640207][  T840]  ? __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)
[  111.640213][  T840]  ? copy_msghdr_from_user (net/socket.c:2673)
[  111.640218][  T840]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  111.640222][  T840]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  111.640228][  T840]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  111.640232][  T840]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  111.640238][  T840]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  111.640244][  T840]  __sys_sendmsg (net/socket.c:2716)
[  111.640247][  T840]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  111.640251][  T840]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  111.640259][  T840]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  111.640263][  T840]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  111.640269][  T840]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  111.640273][  T840] RIP: 0033:0x7fe3c62891d7
[  111.640276][  T840] 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)
[  111.640279][  T840] RSP: 002b:00007ffc0ebd6538 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  111.640285][  T840] RAX: ffffffffffffffda RBX: 00007ffc0ebd6c60 RCX: 00007fe3c62891d7
[  111.640287][  T840] RDX: 0000000000000000 RSI: 00007ffc0ebd65a0 RDI: 0000000000000005
[  111.640288][  T840] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  111.640290][  T840] R10: 00007fe3c6185f60 R11: 0000000000000246 R12: 0000000000000003
[  111.640292][  T840] R13: 00000000691cd76b R14: 0000000000499600 R15: 0000000000000000
| [  111.658973][  T840] #PF: error_code(0x0002) - not-present page
| [  111.659200][  T840] PGD 9f97067 P4D 9f97067 PUD 4fb8067 PMD 0
| [  111.659427][  T840] Oops: Oops: 0002 [#1] SMP KASAN
| [  111.659980][  T840] Tainted: [B]=BAD_PAGE
[  111.660117][  T840] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  111.660349][  T840] 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)
[  111.660592][  T840] 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
[  111.661232][  T840] RSP: 0018:ffffc90001086f40 EFLAGS: 00010046
[  111.661466][  T840] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa584090a
[  111.661743][  T840] RDX: fffffbfff534f2cd RSI: 0000000000000008 RDI: ffffffffa9a79660
[  111.662013][  T840] RBP: ffffc90001086fa8 R08: 0000000000000001 R09: fffffbfff534f2cc
[  111.662283][  T840] R10: ffffffffa9a79667 R11: ffffc90001086a00 R12: 0000000000000000
[  111.662549][  T840] R13: 0000000000000282 R14: ffff88800bdc2000 R15: dffffc0000000000
[  111.662823][  T840] FS:  00007fe3c60bb800(0000) GS:ffff88808c7f2000(0000) knlGS:0000000000000000
[  111.663147][  T840] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  111.663374][  T840] CR2: 0000000000000000 CR3: 000000000a04a005 CR4: 0000000000772ef0
[  111.663642][  T840] PKRU: 55555554
[  111.663780][  T840] Call Trace:
[  111.663932][  T840]  <TASK>
[  111.664034][  T840]  ? __ipv6_dev_mc_dec (net/ipv6/mcast.c:1008)
[  111.664222][  T840]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  111.664407][  T840]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  111.664586][  T840]  ? br_multicast_leave_snoopers (net/bridge/br_multicast.c:4220) bridge
[  111.664837][  T840]  ? br_multicast_join_snoopers (net/bridge/br_multicast.c:4220) bridge
[  111.665098][  T840]  __cancel_work_sync (kernel/workqueue.c:4383)
[  111.665283][  T840]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  111.665464][  T840]  ? netdev_notify_peers (net/core/dev.c:1891)
[  111.665641][  T840]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  111.665820][  T840]  __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)
[  111.666005][  T840]  ? find_held_lock (kernel/locking/lockdep.c:5343)
[  111.666186][  T840]  ? netif_set_allmulti (net/core/dev.c:9890)
[  111.666361][  T840]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  111.666541][  T840]  netif_change_flags (net/core/dev.c:9989)
[  111.666723][  T840]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[  111.666910][  T840]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  111.667090][  T840]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  111.667271][  T840]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  111.667450][  T840]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  111.667646][  T840]  ? __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)
[  111.667823][  T840]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  111.668014][  T840]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  111.668193][  T840]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  111.668383][  T840]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  111.668561][  T840]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  111.668741][  T840]  ? __create_object (mm/kmemleak.c:786)
[  111.668939][  T840]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  111.669120][  T840]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  111.669304][  T840]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  111.669493][  T840]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  111.669672][  T840]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  111.669851][  T840]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  111.670041][  T840]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  111.670228][  T840]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  111.670422][  T840]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  111.670602][  T840]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  111.670785][  T840]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  111.670974][  T840]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  111.671155][  T840]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  111.671333][  T840]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  111.671524][  T840]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  111.671714][  T840]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  111.671901][  T840]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  111.672083][  T840]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  111.672262][  T840]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  111.672448][  T840]  ? 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)
[  111.672624][  T840]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  111.672801][  T840]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  111.672987][  T840]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  111.673171][  T840]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  111.673350][  T840]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  111.673531][  T840]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  111.673717][  T840]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  111.673910][  T840]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  111.674091][  T840]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  111.674312][  T840]  ? __copy_msghdr (net/socket.c:2556)
[  111.674492][  T840]  ___sys_sendmsg (net/socket.c:2686)
[  111.674672][  T840]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  111.674850][  T840]  ? __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)
[  111.675085][  T840]  ? copy_msghdr_from_user (net/socket.c:2673)
[  111.675264][  T840]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  111.675449][  T840]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  111.675629][  T840]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  111.675805][  T840]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  111.675993][  T840]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  111.676172][  T840]  __sys_sendmsg (net/socket.c:2716)
[  111.676349][  T840]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  111.676572][  T840]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  111.676752][  T840]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  111.676934][  T840]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  111.677114][  T840]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  111.677336][  T840] RIP: 0033:0x7fe3c62891d7
[  111.677530][  T840] 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)
[  111.678146][  T840] RSP: 002b:00007ffc0ebd6538 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  111.678403][  T840] RAX: ffffffffffffffda RBX: 00007ffc0ebd6c60 RCX: 00007fe3c62891d7
[  111.678665][  T840] RDX: 0000000000000000 RSI: 00007ffc0ebd65a0 RDI: 0000000000000005
[  111.678939][  T840] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  111.679194][  T840] R10: 00007fe3c6185f60 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