======================================
| [   20.796172][  T318] ==================================================================
| [   20.796714][  T318] 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)
| [   20.797189][  T318] Write of size 8 at addr 0000000000000000 by task ip/318
| [   20.797474][  T318]
[   20.797659][  T318] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.797667][  T318] Call Trace:
[   20.797670][  T318]  <TASK>
[   20.797673][  T318]  dump_stack_lvl (lib/dump_stack.c:123)
[   20.797685][  T318]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   20.797690][  T318]  kasan_report (mm/kasan/report.c:597)
[   20.797699][  T318]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   20.797708][  T318]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   20.797712][  T318]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   20.797717][  T318]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   20.797720][  T318]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   20.797725][  T318]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   20.797730][  T318]  __cancel_work_sync (kernel/workqueue.c:4383)
[   20.797734][  T318]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   20.797744][  T318]  ? netdev_notify_peers (net/core/dev.c:1891)
[   20.797748][  T318]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   20.797752][  T318]  __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)
[   20.797756][  T318]  ? netif_set_allmulti (net/core/dev.c:9890)
[   20.797760][  T318]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.797768][  T318]  netif_change_flags (net/core/dev.c:9989)
[   20.797772][  T318]  dev_change_flags (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:69)
[   20.797776][  T318] cycle_netdev (drivers/net/vrf.c:1052) vrf
[   20.797784][  T318] vrf_add_slave (drivers/net/vrf.c:1083 drivers/net/vrf.c:1102) vrf
[   20.797791][  T318]  do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2964)
[   20.797799][  T318]  do_setlink.constprop.0 (net/core/rtnetlink.c:3165)
[   20.797806][  T318]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   20.797817][  T318]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.797826][  T318]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   20.797835][  T318]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.797844][  T318]  ? __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)
[   20.797850][  T318]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   20.797856][  T318]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.797864][  T318]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.797869][  T318]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   20.797876][  T318]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   20.797884][  T318]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.797889][  T318]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   20.797894][  T318]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   20.797899][  T318]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   20.797907][  T318]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   20.797917][  T318]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   20.797926][  T318]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   20.797932][  T318]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.797942][  T318]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.797949][  T318]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   20.797953][  T318]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.797961][  T318]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   20.797966][  T318]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   20.797974][  T318]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.797978][  T318]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.797991][  T318]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   20.797999][  T318]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.798006][  T318]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   20.798018][  T318]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   20.798023][  T318]  ? 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)
[   20.798031][  T318]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   20.798039][  T318]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   20.798045][  T318]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.798055][  T318]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   20.798063][  T318]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.798070][  T318]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   20.798081][  T318]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.798088][  T318]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   20.798097][  T318]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   20.798101][  T318]  ? __copy_msghdr (net/socket.c:2556)
[   20.798115][  T318]  ___sys_sendmsg (net/socket.c:2686)
[   20.798120][  T318]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   20.798124][  T318]  ? __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)
[   20.798132][  T318]  ? copy_msghdr_from_user (net/socket.c:2673)
[   20.798137][  T318]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.798141][  T318]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.798147][  T318]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.798151][  T318]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   20.798157][  T318]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.798164][  T318]  __sys_sendmsg (net/socket.c:2716)
[   20.798167][  T318]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   20.798171][  T318]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   20.798179][  T318]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.798183][  T318]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   20.798191][  T318]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   20.798195][  T318] RIP: 0033:0x7f828e81c1d7
[   20.798199][  T318] 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)
[   20.798202][  T318] RSP: 002b:00007fffb23fbbc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.798206][  T318] RAX: ffffffffffffffda RBX: 00007fffb23fc2f0 RCX: 00007f828e81c1d7
[   20.798208][  T318] RDX: 0000000000000000 RSI: 00007fffb23fbc30 RDI: 0000000000000005
[   20.798210][  T318] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.798211][  T318] R10: 0000000005d82910 R11: 0000000000000246 R12: 0000000000000004
[   20.798213][  T318] R13: 00000000691cd3b6 R14: 0000000000499600 R15: 0000000000000000
| [   20.828367][  T318] #PF: error_code(0x0002) - not-present page
| [   20.828745][  T318] PGD dc6c067 P4D dc6c067 PUD 95e8067 PMD 0
| [   20.829204][  T318] Oops: Oops: 0002 [#1] SMP KASAN
| [   20.830175][  T318] Tainted: [B]=BAD_PAGE
[   20.830426][  T318] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.830838][  T318] 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)
[   20.831261][  T318] 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
[   20.832336][  T318] RSP: 0018:ffffc900005e6e70 EFLAGS: 00010046
[   20.832588][  T318] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffba64090a
[   20.832878][  T318] RDX: fffffbfff7d0f2cd RSI: 0000000000000008 RDI: ffffffffbe879660
[   20.833178][  T318] RBP: ffffc900005e6ed8 R08: 0000000000000001 R09: fffffbfff7d0f2cc
[   20.833497][  T318] R10: ffffffffbe879667 R11: ffffc900005e6940 R12: 0000000000000000
[   20.833903][  T318] R13: 0000000000000282 R14: ffff88800dc49000 R15: dffffc0000000000
[   20.834371][  T318] FS:  00007f828e64e800(0000) GS:ffff8880779f2000(0000) knlGS:0000000000000000
[   20.834835][  T318] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.835079][  T318] CR2: 0000000000000000 CR3: 0000000009693001 CR4: 0000000000772ef0
[   20.835368][  T318] PKRU: 55555554
[   20.835520][  T318] Call Trace:
[   20.835665][  T318]  <TASK>
[   20.835767][  T318]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   20.836033][  T318]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   20.836261][  T318]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   20.836529][  T318]  __cancel_work_sync (kernel/workqueue.c:4383)
[   20.836789][  T318]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   20.837061][  T318]  ? netdev_notify_peers (net/core/dev.c:1891)
[   20.837375][  T318]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   20.837638][  T318]  __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)
[   20.837937][  T318]  ? netif_set_allmulti (net/core/dev.c:9890)
[   20.838248][  T318]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.838577][  T318]  netif_change_flags (net/core/dev.c:9989)
[   20.838828][  T318]  dev_change_flags (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:69)
[   20.839133][  T318] cycle_netdev (drivers/net/vrf.c:1052) vrf
[   20.839452][  T318] vrf_add_slave (drivers/net/vrf.c:1083 drivers/net/vrf.c:1102) vrf
[   20.839772][  T318]  do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2964)
[   20.840086][  T318]  do_setlink.constprop.0 (net/core/rtnetlink.c:3165)
[   20.840413][  T318]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   20.840728][  T318]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.841035][  T318]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   20.841344][  T318]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.841633][  T318]  ? __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)
[   20.841960][  T318]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   20.842275][  T318]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.842599][  T318]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.842935][  T318]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   20.843267][  T318]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   20.843555][  T318]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.843757][  T318]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   20.843981][  T318]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   20.844277][  T318]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   20.844553][  T318]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   20.844883][  T318]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   20.845220][  T318]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   20.845616][  T318]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.845939][  T318]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.846267][  T318]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   20.846595][  T318]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.847152][  T318]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   20.847484][  T318]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   20.847821][  T318]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.848042][  T318]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.848251][  T318]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   20.848574][  T318]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   20.848841][  T318]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   20.849178][  T318]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   20.849688][  T318]  ? 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)
[   20.849984][  T318]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   20.850325][  T318]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   20.850616][  T318]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.851174][  T318]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   20.851509][  T318]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.851827][  T318]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   20.852152][  T318]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   20.852705][  T318]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   20.853034][  T318]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   20.853458][  T318]  ? __copy_msghdr (net/socket.c:2556)
[   20.853990][  T318]  ___sys_sendmsg (net/socket.c:2686)
[   20.854321][  T318]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   20.854664][  T318]  ? __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)
[   20.855091][  T318]  ? copy_msghdr_from_user (net/socket.c:2673)
[   20.855651][  T318]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.855990][  T318]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.856327][  T318]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   20.856667][  T318]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   20.857198][  T318]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   20.857522][  T318]  __sys_sendmsg (net/socket.c:2716)
[   20.857839][  T318]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   20.858234][  T318]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   20.858771][  T318]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   20.859083][  T318]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   20.859403][  T318]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   20.859792][  T318] RIP: 0033:0x7f828e81c1d7
[   20.860328][  T318] 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)
[   20.861655][  T318] RSP: 002b:00007fffb23fbbc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.862127][  T318] RAX: ffffffffffffffda RBX: 00007fffb23fc2f0 RCX: 00007f828e81c1d7
[   20.862596][  T318] RDX: 0000000000000000 RSI: 00007fffb23fbc30 RDI: 0000000000000005
[   20.863300][  T318] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.863789][  T318] R10: 0000000005d82910 R11: 0000000000000246 R12: 0000000000000004


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