======================================
| [  930.648184][T15886] ------------[ cut here ]------------
| [  930.648529][T15886] rcuref - imbalanced put()
| [  930.648531][T15886] WARNING: lib/rcuref.c:266 at 0x0, CPU#1: mausezahn/15886
| [  930.648960][T15886] Modules linked in: netdevsim sch_etf sch_fq ipt_rpfilter act_tunnel_key bareudp mpls_gso mpls_iptunnel mpls_router pktgen act_gact vxlan openvswitch psample nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nsh cls_flower sch_prio xt_mark nft_compat nf_tables sch_ingress act_mirred cls_basic sch_fq_codel [last unloaded: test_bpf]
[  930.650197][T15886] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  930.650386][T15886] RIP: 0010:rcuref_put_slowpath (lib/rcuref.c:266 (discriminator 4))
[  930.650587][T15886] Code: c0 03 38 d0 7c 04 84 d2 75 6a c7 03 00 00 00 a0 31 c0 eb 8f 48 8d 7c 24 20 e8 3b c4 9a ff e9 6e ff ff ff 48 8d 3d 6f fd 40 03 <67> 48 0f b9 3a be 04 00 00 00 48 89 df e8 0d c9 9a ff 48 89 d8 48
All code
========
   0:	c0 03 38             	rolb   $0x38,(%rbx)
   3:	d0 7c 04 84          	sarb   $1,-0x7c(%rsp,%rax,1)
   7:	d2 75 6a             	shlb   %cl,0x6a(%rbp)
   a:	c7 03 00 00 00 a0    	movl   $0xa0000000,(%rbx)
  10:	31 c0                	xor    %eax,%eax
  12:	eb 8f                	jmp    0xffffffffffffffa3
  14:	48 8d 7c 24 20       	lea    0x20(%rsp),%rdi
  19:	e8 3b c4 9a ff       	call   0xffffffffff9ac459
  1e:	e9 6e ff ff ff       	jmp    0xffffffffffffff91
  23:	48 8d 3d 6f fd 40 03 	lea    0x340fd6f(%rip),%rdi        # 0x340fd99
  2a:*	67 48 0f b9 3a       	ud1    (%edx),%rdi		<-- trapping instruction
  2f:	be 04 00 00 00       	mov    $0x4,%esi
  34:	48 89 df             	mov    %rbx,%rdi
  37:	e8 0d c9 9a ff       	call   0xffffffffff9ac949
  3c:	48 89 d8             	mov    %rbx,%rax
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	67 48 0f b9 3a       	ud1    (%edx),%rdi
   5:	be 04 00 00 00       	mov    $0x4,%esi
   a:	48 89 df             	mov    %rbx,%rdi
   d:	e8 0d c9 9a ff       	call   0xffffffffff9ac91f
  12:	48 89 d8             	mov    %rbx,%rax
  15:	48                   	rex.W
[  930.651120][T15886] RSP: 0018:ffa0000003f77320 EFLAGS: 00010206
[  930.651307][T15886] RAX: 0000000000000000 RBX: ff110000137b8200 RCX: 0000000000000001
[  930.651531][T15886] RDX: 0000000000000001 RSI: 00000000dfffffff RDI: ffffffff9f0e0e20
[  930.651756][T15886] RBP: dffffc0000000000 R08: ffffffff9c8dc159 R09: ffe21c00026f7040
[  930.651977][T15886] R10: ffe21c00026f7041 R11: 0000000000000001 R12: ff110000137b81c0
[  930.652198][T15886] R13: 1ff40000007eee64 R14: ff110000137b8640 R15: ff1100000ad23a80
[  930.652419][T15886] FS:  00007f326c2f8c40(0000) GS:ff110000cc88b000(0000) knlGS:0000000000000000
[  930.652689][T15886] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  930.653241][T15886] CR2: 0000558fb2dcde98 CR3: 0000000018651001 CR4: 0000000000771ef0
[  930.653467][T15886] PKRU: 55555554
[  930.653579][T15886] Call Trace:
[  930.653697][T15886]  <TASK>
[  930.653774][T15886]  ? rcuref_get_slowpath (lib/rcuref.c:238)
[  930.653923][T15886]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  930.654070][T15886]  dst_release (./include/linux/rcuref.h:117 ./include/linux/rcuref.h:173 net/core/dst.c:167)
[  930.654181][T15886]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  930.654325][T15886]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  930.654475][T15886]  rt_cache_route (net/ipv4/route.c:1518)
[  930.654630][T15886]  rt_set_nexthop.isra.0 (net/ipv4/route.c:1622 (discriminator 1))
[  930.654777][T15886]  __mkroute_output (./include/net/lwtunnel.h:140 net/ipv4/route.c:2682)
[  930.654925][T15886]  ip_route_output_key_hash (net/ipv4/route.c:2705)
[  930.655070][T15886]  ? ip_route_output_key_hash_rcu (net/ipv4/route.c:2693)
[  930.655250][T15886]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[  930.655396][T15886]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  930.655548][T15886]  ip_route_output_flow (net/ipv4/route.c:2934 (discriminator 1))
[  930.655698][T15886]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 2))
[  930.655844][T15886]  udp_tunnel_dst_lookup (net/ipv4/udp_tunnel_core.c:261 (discriminator 1))
[  930.655989][T15886]  ? udp_tunnel_sock_release (net/ipv4/udp_tunnel_core.c:237)
[  930.656134][T15886]  ? vxlan_xmit_one (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) drivers/net/vxlan/vxlan_core.c:2455 (discriminator 1)) vxlan
[  930.656282][T15886]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  930.656428][T15886] vxlan_xmit_one (drivers/net/vxlan/vxlan_core.c:2472 (discriminator 4)) vxlan
[  930.656582][T15886]  ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24 (discriminator 3))
[  930.656738][T15886]  ? vxlan_fdb_delete (drivers/net/vxlan/vxlan_core.c:2337) vxlan
[  930.656884][T15886]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[  930.657028][T15886]  ? vxlan_find_mac_rcu (./include/linux/rhashtable.h:632 (discriminator 4) ./include/linux/rhashtable.h:670 (discriminator 4) drivers/net/vxlan/vxlan_core.c:392 (discriminator 4)) vxlan
[  930.657212][T15886]  ? vxlan_find_sock (drivers/net/vxlan/vxlan_core.c:382) vxlan
[  930.657356][T15886]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  930.657505][T15886]  ? vxlan_xmit (drivers/net/vxlan/vxlan_core.c:2829) vxlan
[  930.657658][T15886] vxlan_xmit (drivers/net/vxlan/vxlan_core.c:2829) vxlan
[  930.657807][T15886]  dev_hard_start_xmit (./include/linux/netdevice.h:5272 ./include/linux/netdevice.h:5281 net/core/dev.c:3853 net/core/dev.c:3869)
[  930.657955][T15886]  __dev_queue_xmit (net/core/dev.h:381 net/core/dev.c:4818)
[  930.658098][T15886]  ? _copy_from_iter (./arch/x86/include/asm/smap.h:47 ./arch/x86/include/asm/uaccess_64.h:121 ./arch/x86/include/asm/uaccess_64.h:141 lib/iov_iter.c:67 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[  930.658240][T15886]  ? __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 1) net/core/skbuff.c:672 (discriminator 1))
[  930.658384][T15886]  ? napi_skb_cache_get (net/core/skbuff.c:650)
[  930.658531][T15886]  ? _copy_from_iter_flushcache (lib/iov_iter.c:266)
[  930.658718][T15886]  ? netdev_core_pick_tx (net/core/dev.c:4725)
[  930.658861][T15886]  ? packet_parse_headers (./include/linux/skbuff.h:3180 (discriminator 1) net/packet/af_packet.c:1938 (discriminator 1))
[  930.659008][T15886]  ? sock_alloc_send_pskb (net/core/sock.c:2998)
[  930.659155][T15886]  packet_snd (net/packet/af_packet.c:3076 (discriminator 1))
[  930.659302][T15886]  ? tpacket_snd (net/packet/af_packet.c:2940)
[  930.659445][T15886]  ? __might_fault (mm/memory.c:7129 (discriminator 4))
[  930.659594][T15886]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[  930.659752][T15886]  ? __might_fault (mm/memory.c:7129 (discriminator 4))
[  930.659897][T15886]  __sys_sendto (net/socket.c:721 (discriminator 1) net/socket.c:733 (discriminator 1) net/socket.c:2222 (discriminator 1))
[  930.660046][T15886]  ? __ia32_sys_getpeername (net/socket.c:2189)
[  930.660194][T15886]  ? sock_ioctl (net/socket.c:1367)
[  930.660345][T15886]  ? __x64_sys_clock_gettime (kernel/time/posix-timers.c:1146 (discriminator 2) kernel/time/posix-timers.c:1134 (discriminator 2) kernel/time/posix-timers.c:1134 (discriminator 2))
[  930.660496][T15886]  __x64_sys_sendto (net/socket.c:2229 (discriminator 1) net/socket.c:2225 (discriminator 1) net/socket.c:2225 (discriminator 1))
[  930.660647][T15886]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473)
[  930.660792][T15886]  ? do_syscall_64 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/entry-common.h:108 arch/x86/entry/syscall_64.c:90)
[  930.660937][T15886]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[  930.661083][T15886]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:131)
[  930.661263][T15886] RIP: 0033:0x7f326c4abc5e
[  930.661417][T15886] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[  930.661943][T15886] RSP: 002b:00007ffdba8e47d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[  930.662163][T15886] RAX: ffffffffffffffda RBX: 00005601923b8830 RCX: 00007f326c4abc5e
[  930.662380][T15886] RDX: 0000000000000064 RSI: 00005601923b8ac2 RDI: 0000000000000005
[  930.662605][T15886] RBP: 00007ffdba8e47e0 R08: 00007ffdba8e4830 R09: 0000000000000014
[  930.662825][T15886] R10: 0000000000000000 R11: 0000000000000202 R12: 00005601923b8ac2
[  930.663041][T15886] R13: 0000000000000064 R14: 0000000000000005 R15: 000056015f60d890
| [  931.277933][    C0] BUG: KASAN: slab-use-after-free in dst_dev_put (net/core/dst.c:146)
| [  931.278075][    C0] Read of size 8 at addr ff110000137b84c0 by task ksoftirqd/0/14
| [  931.278206][    C0]
| [  931.278258][    C0] Tainted: [W]=WARN
[  931.278259][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  931.278260][    C0] Call Trace:
[  931.278262][    C0]  <TASK>
[  931.278263][    C0]  dump_stack_lvl (lib/dump_stack.c:122)
[  931.278269][    C0]  print_address_description.constprop.0 (mm/kasan/report.c:379)
[  931.278274][    C0]  print_report (mm/kasan/report.c:483)
[  931.278275][    C0]  ? dst_dev_put (net/core/dst.c:146)
[  931.278277][    C0]  ? __virt_addr_valid (./include/linux/rcupdate.h:981 (discriminator 3) ./include/linux/mmzone.h:2197 (discriminator 3) arch/x86/mm/physaddr.c:54 (discriminator 3))
[  931.278281][    C0]  ? dst_dev_put (net/core/dst.c:146)
[  931.278283][    C0]  kasan_report (mm/kasan/report.c:597)
[  931.278287][    C0]  ? dst_dev_put (net/core/dst.c:146)
[  931.278289][    C0]  dst_dev_put (net/core/dst.c:146)
[  931.278291][    C0]  rt_fibinfo_free_cpus.part.0 (net/ipv4/fib_semantics.c:196)
[  931.278295][    C0]  fib_nh_common_release (net/ipv4/fib_semantics.c:141 net/ipv4/fib_semantics.c:207)
[  931.278297][    C0]  free_fib_info_rcu (./include/net/nexthop.h:480 net/ipv4/fib_semantics.c:229)
[  931.278298][    C0]  ? rcu_do_batch (kernel/rcu/tree.c:2605)
[  931.278302][    C0]  rcu_do_batch (./include/linux/rcupdate.h:341 (discriminator 1) kernel/rcu/tree.c:2607 (discriminator 1))
[  931.278304][    C0]  ? rcu_start_this_gp (kernel/rcu/tree.c:1018)
[  931.278307][    C0]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
[  931.278309][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  931.278311][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  931.278314][    C0]  rcu_core (kernel/rcu/tree.c:2859)
[  931.278316][    C0]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[  931.278319][    C0]  ? tasklet_unlock_wait (kernel/softirq.c:580)
[  931.278321][    C0]  run_ksoftirqd (kernel/softirq.c:479 kernel/softirq.c:1064 kernel/softirq.c:1055)
[  931.278322][    C0]  smpboot_thread_fn (kernel/smpboot.c:160)
[  931.278326][    C0]  ? sort_range (kernel/smpboot.c:103)
[  931.278327][    C0]  kthread (kernel/kthread.c:463)
[  931.278330][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  931.278331][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  931.278333][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  931.278334][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  931.278336][    C0]  ret_from_fork (arch/x86/kernel/process.c:164)
[  931.278338][    C0]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  931.278340][    C0]  ? __switch_to (./include/linux/thread_info.h:140 (discriminator 2) arch/x86/kernel/process.h:16 (discriminator 2) arch/x86/kernel/process_64.c:676 (discriminator 2))
[  931.278343][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  931.278345][    C0]  ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
| [  931.290141][    C0] Disabling lock debugging due to kernel taint
| [  931.290261][    C0] Oops: general protection fault, probably for non-canonical address 0xe05f3c7360000008: 0000 [#1] SMP KASAN
| [  931.290489][    C0] KASAN: maybe wild-memory-access in range [0x02fa039b00000040-0x02fa039b00000047]
| [  931.290835][    C0] Tainted: [B]=BAD_PAGE, [W]=WARN
[  931.290989][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  931.291095][    C0] RIP: 0010:dst_dev_put (net/core/dst.c:149)
[  931.291186][    C0] Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 2c 02 00 00 48 ba 00 00 00 00 00 fc ff df 48 8b 43 08 48 8d 78 38 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 d8 01 00 00 48 8b 40 38 48 85 c0 74 08 48 89 ee
All code
========
   0:	fc                   	cld
   1:	ff                   	lcall  (bad)
   2:	df 48 c1             	fisttps -0x3f(%rax)
   5:	ea                   	(bad)
   6:	03 80 3c 02 00 0f    	add    0xf00023c(%rax),%eax
   c:	85 2c 02             	test   %ebp,(%rdx,%rax,1)
   f:	00 00                	add    %al,(%rax)
  11:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  18:	fc ff df 
  1b:	48 8b 43 08          	mov    0x8(%rbx),%rax
  1f:	48 8d 78 38          	lea    0x38(%rax),%rdi
  23:	48 89 f9             	mov    %rdi,%rcx
  26:	48 c1 e9 03          	shr    $0x3,%rcx
  2a:*	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1)		<-- trapping instruction
  2e:	0f 85 d8 01 00 00    	jne    0x20c
  34:	48 8b 40 38          	mov    0x38(%rax),%rax
  38:	48 85 c0             	test   %rax,%rax
  3b:	74 08                	je     0x45
  3d:	48 89 ee             	mov    %rbp,%rsi

Code starting with the faulting instruction
===========================================
   0:	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1)
   4:	0f 85 d8 01 00 00    	jne    0x1e2
   a:	48 8b 40 38          	mov    0x38(%rax),%rax
   e:	48 85 c0             	test   %rax,%rax
  11:	74 08                	je     0x1b
  13:	48 89 ee             	mov    %rbp,%rsi
[  931.291554][    C0] RSP: 0018:ffa00000000e7ad8 EFLAGS: 00010213
[  931.291664][    C0] RAX: 02fa039b0000000c RBX: ff110000137b84c0 RCX: 005f407360000008
[  931.291862][    C0] RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 02fa039b00000044
[  931.291992][    C0] RBP: ff11000011764ea8 R08: 0000000000000008 R09: fffffbfff3f4c2c4
[  931.292116][    C0] R10: fffffbfff3f4c2c5 R11: 0000000000000000 R12: 1fe22000015a474d
[  931.292239][    C0] R13: 0000000000000003 R14: 0000000000000001 R15: ff1100000ad23a70
[  931.292365][    C0] FS:  0000000000000000(0000) GS:ff110000cc80b000(0000) knlGS:0000000000000000
[  931.292547][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  931.292650][    C0] CR2: 00007fb491ff7000 CR3: 00000000137ab003 CR4: 0000000000771ef0
[  931.292778][    C0] PKRU: 55555554
[  931.292875][    C0] Call Trace:
[  931.292937][    C0]  <TASK>
[  931.292980][    C0]  rt_fibinfo_free_cpus.part.0 (net/ipv4/fib_semantics.c:196)
[  931.293063][    C0]  fib_nh_common_release (net/ipv4/fib_semantics.c:141 net/ipv4/fib_semantics.c:207)
[  931.293145][    C0]  free_fib_info_rcu (./include/net/nexthop.h:480 net/ipv4/fib_semantics.c:229)
[  931.293261][    C0]  ? rcu_do_batch (kernel/rcu/tree.c:2605)
[  931.293344][    C0]  rcu_do_batch (./include/linux/rcupdate.h:341 (discriminator 1) kernel/rcu/tree.c:2607 (discriminator 1))
[  931.293433][    C0]  ? rcu_start_this_gp (kernel/rcu/tree.c:1018)
[  931.293526][    C0]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
[  931.293642][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  931.293728][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  931.293817][    C0]  rcu_core (kernel/rcu/tree.c:2859)
[  931.293879][    C0]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[  931.293995][    C0]  ? tasklet_unlock_wait (kernel/softirq.c:580)
[  931.294078][    C0]  run_ksoftirqd (kernel/softirq.c:479 kernel/softirq.c:1064 kernel/softirq.c:1055)
[  931.294163][    C0]  smpboot_thread_fn (kernel/smpboot.c:160)
[  931.294246][    C0]  ? sort_range (kernel/smpboot.c:103)
[  931.294307][    C0]  kthread (kernel/kthread.c:463)
[  931.294403][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  931.294486][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  931.294567][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  931.294651][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  931.294767][    C0]  ret_from_fork (arch/x86/kernel/process.c:164)
[  931.294850][    C0]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  931.294949][    C0]  ? __switch_to (./include/linux/thread_info.h:140 (discriminator 2) arch/x86/kernel/process.h:16 (discriminator 2) arch/x86/kernel/process_64.c:676 (discriminator 2))
[  931.295035][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)


Finger prints:
print_report:kasan_report:dst_dev_put:fib_nh_common_release:free_fib_info_rcu
rcuref_put_slowpath:dst_release:rt_cache_route:__mkroute_output:ip_route_output_key_hash
dst_dev_put:fib_nh_common_release:free_fib_info_rcu:rcu_do_batch:rcu_core