======================================
| [  861.736810][    C1] ==================================================================
| [  861.736984][    C1] BUG: KASAN: slab-use-after-free in dst_dev_put (net/core/dst.c:146)
| [  861.737120][    C1] Read of size 8 at addr ff1100000d607cc0 by task ksoftirqd/1/22
| [  861.737249][    C1]
[  861.737301][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  861.737302][    C1] Call Trace:
[  861.737304][    C1]  <TASK>
[  861.737306][    C1]  dump_stack_lvl (lib/dump_stack.c:122)
[  861.737312][    C1]  print_address_description.constprop.0 (mm/kasan/report.c:379)
[  861.737317][    C1]  print_report (mm/kasan/report.c:483)
[  861.737318][    C1]  ? dst_dev_put (net/core/dst.c:146)
[  861.737320][    C1]  ? __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))
[  861.737324][    C1]  ? dst_dev_put (net/core/dst.c:146)
[  861.737326][    C1]  kasan_report (mm/kasan/report.c:597)
[  861.737329][    C1]  ? dst_dev_put (net/core/dst.c:146)
[  861.737332][    C1]  dst_dev_put (net/core/dst.c:146)
[  861.737334][    C1]  rt_fibinfo_free_cpus.part.0 (net/ipv4/fib_semantics.c:196)
[  861.737337][    C1]  fib_nh_common_release (net/ipv4/fib_semantics.c:141 net/ipv4/fib_semantics.c:207)
[  861.737339][    C1]  free_fib_info_rcu (./include/net/nexthop.h:480 net/ipv4/fib_semantics.c:229)
[  861.737341][    C1]  ? rcu_do_batch (kernel/rcu/tree.c:2605)
[  861.737345][    C1]  rcu_do_batch (./include/linux/rcupdate.h:341 (discriminator 1) kernel/rcu/tree.c:2607 (discriminator 1))
[  861.737347][    C1]  ? rcu_start_this_gp (kernel/rcu/tree.c:1018)
[  861.737350][    C1]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
[  861.737352][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  861.737354][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  861.737356][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 33))
[  861.737359][    C1]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 6) kernel/locking/lockdep.c:4411 (discriminator 6))
[  861.737360][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473)
[  861.737365][    C1]  rcu_core (kernel/rcu/tree.c:2859)
[  861.737366][    C1]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[  861.737370][    C1]  ? tasklet_unlock_wait (kernel/softirq.c:580)
[  861.737372][    C1]  run_ksoftirqd (kernel/softirq.c:479 kernel/softirq.c:1064 kernel/softirq.c:1055)
[  861.737373][    C1]  smpboot_thread_fn (kernel/smpboot.c:160)
[  861.737376][    C1]  ? sort_range (kernel/smpboot.c:103)
[  861.737378][    C1]  kthread (kernel/kthread.c:463)
[  861.737380][    C1]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  861.737382][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  861.737383][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  861.737385][    C1]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  861.737387][    C1]  ret_from_fork (arch/x86/kernel/process.c:164)
[  861.737389][    C1]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  861.737391][    C1]  ? __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))
[  861.737394][    C1]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  861.737395][    C1]  ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
| [  861.748075][    C1] Disabling lock debugging due to kernel taint
| [  861.748195][    C1] Oops: general protection fault, probably for non-canonical address 0xe0b53c3580000008: 0000 [#1] SMP KASAN
| [  861.748381][    C1] KASAN: maybe wild-memory-access in range [0x05aa01ac00000040-0x05aa01ac00000047]
| [  861.748710][    C1] Tainted: [B]=BAD_PAGE
[  861.748779][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  861.748886][    C1] RIP: 0010:dst_dev_put (net/core/dst.c:149)
[  861.748973][    C1] 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
[  861.749267][    C1] RSP: 0018:ffa0000000197ad8 EFLAGS: 00010213
[  861.749383][    C1] RAX: 05aa01ac0000000c RBX: ff1100000d607cc0 RCX: 00b5403580000008
[  861.749508][    C1] RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 05aa01ac00000044
[  861.749642][    C1] RBP: ff1100000d6073c0 R08: 0000000000000008 R09: fffffbfff64cc2c4
[  861.749775][    C1] R10: fffffbfff64cc2c5 R11: 0000000000000000 R12: 1fe2200001955dcd
[  861.749906][    C1] R13: 0000000000000000 R14: 0000000000000001 R15: ff1100000caaee70
[  861.750032][    C1] FS:  0000000000000000(0000) GS:ff110000b368b000(0000) knlGS:0000000000000000
[  861.750181][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  861.750286][    C1] CR2: 00007ffd33b24598 CR3: 000000007b548004 CR4: 0000000000771ef0
[  861.750412][    C1] PKRU: 55555554
[  861.750476][    C1] Call Trace:
[  861.750539][    C1]  <TASK>
[  861.750591][    C1]  rt_fibinfo_free_cpus.part.0 (net/ipv4/fib_semantics.c:196)
[  861.750677][    C1]  fib_nh_common_release (net/ipv4/fib_semantics.c:141 net/ipv4/fib_semantics.c:207)
[  861.750760][    C1]  free_fib_info_rcu (./include/net/nexthop.h:480 net/ipv4/fib_semantics.c:229)
[  861.750848][    C1]  ? rcu_do_batch (kernel/rcu/tree.c:2605)
[  861.750932][    C1]  rcu_do_batch (./include/linux/rcupdate.h:341 (discriminator 1) kernel/rcu/tree.c:2607 (discriminator 1))
[  861.751015][    C1]  ? rcu_start_this_gp (kernel/rcu/tree.c:1018)
[  861.751098][    C1]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
[  861.751180][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  861.751263][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  861.751344][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 33))
[  861.751454][    C1]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 6) kernel/locking/lockdep.c:4411 (discriminator 6))
[  861.751554][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473)
[  861.751648][    C1]  rcu_core (kernel/rcu/tree.c:2859)
[  861.751711][    C1]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[  861.751794][    C1]  ? tasklet_unlock_wait (kernel/softirq.c:580)
[  861.751877][    C1]  run_ksoftirqd (kernel/softirq.c:479 kernel/softirq.c:1064 kernel/softirq.c:1055)
[  861.751960][    C1]  smpboot_thread_fn (kernel/smpboot.c:160)
[  861.752044][    C1]  ? sort_range (kernel/smpboot.c:103)
[  861.752106][    C1]  kthread (kernel/kthread.c:463)
[  861.752172][    C1]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  861.752254][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  861.752336][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  861.752418][    C1]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  861.752504][    C1]  ret_from_fork (arch/x86/kernel/process.c:164)
[  861.752598][    C1]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  861.752709][    C1]  ? __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))
[  861.752797][    C1]  ? 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
dst_dev_put:fib_nh_common_release:free_fib_info_rcu:rcu_do_batch:rcu_core