======================================
| [   23.358525][  T324] ==================================================================
| [   23.358867][  T324] 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)
| [   23.359218][  T324] Write of size 8 at addr 0000000000000000 by task ip/324
| [   23.359531][  T324]
[   23.359640][  T324] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   23.359643][  T324] Call Trace:
[   23.359645][  T324]  <TASK>
[   23.359647][  T324]  dump_stack_lvl (lib/dump_stack.c:123)
[   23.359656][  T324]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   23.359659][  T324]  kasan_report (mm/kasan/report.c:597)
[   23.359668][  T324]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   23.359673][  T324]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   23.359676][  T324]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   23.359682][  T324]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   23.359685][  T324]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   23.359689][  T324]  ? qdisc_destroy (net/sched/sch_generic.c:1355)
[   23.359696][  T324]  __cancel_work_sync (kernel/workqueue.c:4383)
[   23.359700][  T324]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   23.359709][  T324]  ? netdev_notify_peers (net/core/dev.c:1891)
[   23.359713][  T324]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   23.359719][  T324]  __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)
[   23.359724][  T324]  ? netif_set_allmulti (net/core/dev.c:9890)
[   23.359728][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.359736][  T324]  netif_change_flags (net/core/dev.c:9989)
[   23.359740][  T324]  dev_change_flags (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:69)
[   23.359744][  T324] cycle_netdev (drivers/net/vrf.c:1052) vrf
[   23.359752][  T324] vrf_add_slave (drivers/net/vrf.c:1083 drivers/net/vrf.c:1102) vrf
[   23.359757][  T324]  do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2964)
[   23.359762][  T324]  do_setlink.constprop.0 (net/core/rtnetlink.c:3165)
[   23.359767][  T324]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   23.359773][  T324]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.359781][  T324]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   23.359787][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.359792][  T324]  ? __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)
[   23.359796][  T324]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   23.359799][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   23.359804][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   23.359807][  T324]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   23.359811][  T324]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   23.359816][  T324]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   23.359820][  T324]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   23.359823][  T324]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   23.359826][  T324]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   23.359832][  T324]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   23.359837][  T324]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   23.359842][  T324]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   23.359845][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.359851][  T324]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   23.359855][  T324]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   23.359857][  T324]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   23.359862][  T324]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   23.359865][  T324]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   23.359868][  T324]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   23.359871][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.359878][  T324]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   23.359884][  T324]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   23.359887][  T324]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   23.359894][  T324]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   23.359897][  T324]  ? 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)
[   23.359901][  T324]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   23.359905][  T324]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   23.359909][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.359914][  T324]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   23.359919][  T324]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   23.359922][  T324]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   23.359930][  T324]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   23.359934][  T324]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   23.359940][  T324]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   23.359943][  T324]  ? __copy_msghdr (net/socket.c:2556)
[   23.359951][  T324]  ___sys_sendmsg (net/socket.c:2686)
[   23.359954][  T324]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   23.359957][  T324]  ? __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)
[   23.359964][  T324]  ? copy_msghdr_from_user (net/socket.c:2673)
[   23.359967][  T324]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.359972][  T324]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.359975][  T324]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   23.359980][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.359987][  T324]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   23.359990][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   23.359995][  T324]  __sys_sendmsg (net/socket.c:2716)
[   23.359999][  T324]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   23.360006][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   23.360009][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   23.360013][  T324]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   23.360020][  T324]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   23.360027][  T324] RIP: 0033:0x7f6090b4b1d7
[   23.360031][  T324] 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)
[   23.360034][  T324] RSP: 002b:00007ffc20297008 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.360038][  T324] RAX: ffffffffffffffda RBX: 00007ffc20297730 RCX: 00007f6090b4b1d7
[   23.360040][  T324] RDX: 0000000000000000 RSI: 00007ffc20297070 RDI: 0000000000000005
[   23.360042][  T324] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   23.360044][  T324] R10: 000000002832e910 R11: 0000000000000246 R12: 0000000000000003
[   23.360045][  T324] R13: 00000000691cbbe1 R14: 0000000000499600 R15: 0000000000000000
| [   23.391003][  T324] #PF: error_code(0x0002) - not-present page
| [   23.391349][  T324] PGD b403067 P4D b403067 PUD baa6067 PMD 0
| [   23.391744][  T324] Oops: Oops: 0002 [#1] SMP KASAN
| [   23.392670][  T324] Tainted: [B]=BAD_PAGE
[   23.392911][  T324] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   23.393356][  T324] 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)
[   23.393797][  T324] 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
[   23.394931][  T324] RSP: 0018:ffffc90000556e70 EFLAGS: 00010046
[   23.395358][  T324] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff98a4090a
[   23.395855][  T324] RDX: fffffbfff398f2cd RSI: 0000000000000008 RDI: ffffffff9cc79660
[   23.396341][  T324] RBP: ffffc90000556ed8 R08: 0000000000000001 R09: fffffbfff398f2cc
[   23.396824][  T324] R10: ffffffff9cc79667 R11: ffffc90000556940 R12: 0000000000000000
[   23.397307][  T324] R13: 0000000000000282 R14: ffff88800c35c000 R15: dffffc0000000000
[   23.397786][  T324] FS:  00007f609097d800(0000) GS:ffff888099772000(0000) knlGS:0000000000000000
[   23.398350][  T324] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.398733][  T324] CR2: 0000000000000000 CR3: 0000000009512003 CR4: 0000000000772ef0
[   23.399215][  T324] PKRU: 55555554
[   23.399457][  T324] Call Trace:
[   23.399693][  T324]  <TASK>
[   23.400074][  T324]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   23.400430][  T324]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   23.400744][  T324]  ? qdisc_destroy (net/sched/sch_generic.c:1355)
[   23.401056][  T324]  __cancel_work_sync (kernel/workqueue.c:4383)
[   23.401586][  T324]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   23.401894][  T324]  ? netdev_notify_peers (net/core/dev.c:1891)
[   23.402212][  T324]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   23.402530][  T324]  __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)
[   23.403070][  T324]  ? netif_set_allmulti (net/core/dev.c:9890)
[   23.403381][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.403690][  T324]  netif_change_flags (net/core/dev.c:9989)
[   23.404027][  T324]  dev_change_flags (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:69)
[   23.404557][  T324] cycle_netdev (drivers/net/vrf.c:1052) vrf
[   23.404910][  T324] vrf_add_slave (drivers/net/vrf.c:1083 drivers/net/vrf.c:1102) vrf
[   23.405236][  T324]  do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2964)
[   23.405561][  T324]  do_setlink.constprop.0 (net/core/rtnetlink.c:3165)
[   23.406099][  T324]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   23.406414][  T324]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.406736][  T324]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   23.407045][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.407587][  T324]  ? __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)
[   23.407901][  T324]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   23.408224][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   23.408534][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   23.409095][  T324]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   23.409440][  T324]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   23.409733][  T324]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   23.410036][  T324]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   23.410575][  T324]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   23.410893][  T324]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   23.411221][  T324]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   23.411541][  T324]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   23.412084][  T324]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   23.412390][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.412707][  T324]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   23.413040][  T324]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   23.413574][  T324]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   23.413884][  T324]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   23.414196][  T324]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   23.414500][  T324]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   23.414980][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.415281][  T324]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   23.415599][  T324]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   23.415909][  T324]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   23.416231][  T324]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   23.416543][  T324]  ? 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)
[   23.416892][  T324]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   23.417208][  T324]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   23.417753][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.418090][  T324]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   23.418403][  T324]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   23.418620][  T324]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   23.418936][  T324]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   23.419163][  T324]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   23.419352][  T324]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   23.419587][  T324]  ? __copy_msghdr (net/socket.c:2556)
[   23.419894][  T324]  ___sys_sendmsg (net/socket.c:2686)
[   23.420083][  T324]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   23.420287][  T324]  ? __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)
[   23.420529][  T324]  ? copy_msghdr_from_user (net/socket.c:2673)
[   23.420834][  T324]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.421028][  T324]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.421225][  T324]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   23.421418][  T324]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.421724][  T324]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   23.421907][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   23.422123][  T324]  __sys_sendmsg (net/socket.c:2716)
[   23.422316][  T324]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   23.422628][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   23.422831][  T324]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   23.423018][  T324]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   23.423309][  T324]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   23.423904][  T324] RIP: 0033:0x7f6090b4b1d7
[   23.424117][  T324] 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)
[   23.424921][  T324] RSP: 002b:00007ffc20297008 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.425218][  T324] RAX: ffffffffffffffda RBX: 00007ffc20297730 RCX: 00007f6090b4b1d7
[   23.425614][  T324] RDX: 0000000000000000 RSI: 00007ffc20297070 RDI: 0000000000000005
[   23.425888][  T324] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   23.426214][  T324] R10: 000000002832e910 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