======================================
| [  983.406727][    C2] ==================================================================
| [  983.406920][    C2] BUG: KASAN: slab-use-after-free in dst_dev_put (net/core/dst.c:146)
| [  983.407063][    C2] Read of size 8 at addr ff1100000b7704c0 by task swapper/2/0
| [  983.407196][    C2]
[  983.407249][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  983.407251][    C2] Call Trace:
[  983.407253][    C2]  <IRQ>
[  983.407254][    C2]  dump_stack_lvl (lib/dump_stack.c:122)
[  983.407260][    C2]  print_address_description.constprop.0 (mm/kasan/report.c:379)
[  983.407265][    C2]  print_report (mm/kasan/report.c:483)
[  983.407266][    C2]  ? dst_dev_put (net/core/dst.c:146)
[  983.407268][    C2]  ? __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))
[  983.407273][    C2]  ? dst_dev_put (net/core/dst.c:146)
[  983.407274][    C2]  kasan_report (mm/kasan/report.c:597)
[  983.407278][    C2]  ? dst_dev_put (net/core/dst.c:146)
[  983.407280][    C2]  dst_dev_put (net/core/dst.c:146)
[  983.407282][    C2]  rt_fibinfo_free_cpus.part.0 (net/ipv4/fib_semantics.c:196)
[  983.407286][    C2]  fib_nh_common_release (net/ipv4/fib_semantics.c:141 net/ipv4/fib_semantics.c:207)
[  983.407288][    C2]  free_fib_info_rcu (./include/net/nexthop.h:480 net/ipv4/fib_semantics.c:229)
[  983.407290][    C2]  ? rcu_do_batch (kernel/rcu/tree.c:2605)
[  983.407294][    C2]  rcu_do_batch (./include/linux/rcupdate.h:341 (discriminator 1) kernel/rcu/tree.c:2607 (discriminator 1))
[  983.407297][    C2]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
[  983.407299][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 33))
[  983.407302][    C2]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 6) kernel/locking/lockdep.c:4411 (discriminator 6))
[  983.407304][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473)
[  983.407308][    C2]  ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 ./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[  983.407310][    C2]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 (discriminator 3) kernel/locking/spinlock.c:194 (discriminator 3))
[  983.407312][    C2]  rcu_core (kernel/rcu/tree.c:2859)
[  983.407314][    C2]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[  983.407318][    C2]  ? tasklet_unlock_wait (kernel/softirq.c:580)
[  983.407319][    C2]  ? __flush_smp_call_function_queue (kernel/smp.c:137 kernel/smp.c:593)
[  983.407323][    C2]  irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
[  983.407324][    C2]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1056 (discriminator 47) arch/x86/kernel/apic/apic.c:1056 (discriminator 47))
[  983.407326][    C2]  </IRQ>
[  983.407327][    C2]  <TASK>
[  983.407328][    C2]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  983.407330][    C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82)
[  983.407333][    C2] Code: 48 8b 3d c4 ac 71 02 e8 1f 00 00 00 48 2b 05 b8 22 9b 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 23 83 19 00 fb f4 <c3> 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01
All code
========
   0:	48 8b 3d c4 ac 71 02 	mov    0x271acc4(%rip),%rdi        # 0x271accb
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 b8 22 9b 00 	sub    0x9b22b8(%rip),%rax        # 0x9b22cb
  13:	c3                   	ret
  14:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1b:	f3 0f 1e fa          	endbr64
  1f:	eb 07                	jmp    0x28
  21:	0f 00 2d 23 83 19 00 	verw   0x198323(%rip)        # 0x19834b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	48 83 ec 20          	sub    $0x20,%rsp
  33:	8b 17                	mov    (%rdi),%edx
  35:	49 89 f8             	mov    %rdi,%r8
  38:	83 e2 fe             	and    $0xfffffffe,%edx
  3b:	41 89 d2             	mov    %edx,%r10d
  3e:	0f                   	.byte 0xf
  3f:	01                   	.byte 0x1

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	48 83 ec 20          	sub    $0x20,%rsp
   9:	8b 17                	mov    (%rdi),%edx
   b:	49 89 f8             	mov    %rdi,%r8
   e:	83 e2 fe             	and    $0xfffffffe,%edx
  11:	41 89 d2             	mov    %edx,%r10d
  14:	0f                   	.byte 0xf
  15:	01                   	.byte 0x1
[  983.407335][    C2] RSP: 0018:ffa0000000147de8 EFLAGS: 00000296
[  983.407338][    C2] RAX: 0000000002ed7735 RBX: ff11000001ada2c0 RCX: ffffffffa7284c3f
[  983.407339][    C2] RDX: ff11000001ada2c0 RSI: ffffffffaa00ff26 RDI: ffffffffa9a69f80
[  983.407340][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
[  983.407341][    C2] R10: 0000000000000002 R11: 0000000000000001 R12: 1ff4000000028fc0
[  983.407342][    C2] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
[  983.407344][    C2]  ? cpuidle_idle_call (kernel/sched/idle.c:192)
[  983.407347][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473)
[  983.407348][    C2]  default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:767)
[  983.407350][    C2]  default_idle_call (./include/linux/cpuidle.h:143 (discriminator 1) kernel/sched/idle.c:123 (discriminator 1))
[  983.407352][    C2]  cpuidle_idle_call (kernel/sched/idle.c:192)
[  983.407353][    C2]  ? arch_cpu_idle_exit+0x40/0x40
[  983.407354][    C2]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:52)
[  983.407357][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 33))
[  983.407359][    C2]  do_idle (kernel/sched/idle.c:332)
[  983.407360][    C2]  cpu_startup_entry (kernel/sched/idle.c:429)
[  983.407362][    C2]  start_secondary (arch/x86/kernel/smpboot.c:200 (discriminator 16) arch/x86/kernel/smpboot.c:280 (discriminator 16))
[  983.407364][    C2]  ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:230)
[  983.407366][    C2]  common_startup_64 (arch/x86/kernel/head_64.S:419)
| [  983.421183][    C2] Disabling lock debugging due to kernel taint
| [  983.421351][    C2] Oops: general protection fault, probably for non-canonical address 0xe0bf3c6b20000008: 0000 [#1] SMP KASAN
| [  983.421558][    C2] KASAN: maybe wild-memory-access in range [0x05fa035900000040-0x05fa035900000047]
| [  983.421889][    C2] Tainted: [B]=BAD_PAGE
[  983.421955][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  983.422064][    C2] RIP: 0010:dst_dev_put (net/core/dst.c:149)
[  983.422156][    C2] 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
[  983.422505][    C2] RSP: 0018:ffa0000000218d10 EFLAGS: 00010213
[  983.422617][    C2] RAX: 05fa03590000000c RBX: ff1100000b7704c0 RCX: 00bf406b20000008
[  983.422746][    C2] RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 05fa035900000044
[  983.422919][    C2] RBP: ff1100000f000d70 R08: 0000000000000008 R09: fffffbfff57cc2c4
[  983.423048][    C2] R10: fffffbfff57cc2c5 R11: 0000000000000000 R12: 1fe220000193d74d
[  983.423176][    C2] R13: 0000000000000003 R14: 0000000000000001 R15: ff1100000c9eba70
[  983.423347][    C2] FS:  0000000000000000(0000) GS:ff110000c050b000(0000) knlGS:0000000000000000
[  983.423510][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  983.423659][    C2] CR2: 000055f17cee3818 CR3: 0000000012828002 CR4: 0000000000771ef0
[  983.423794][    C2] PKRU: 55555554
[  983.423859][    C2] Call Trace:
[  983.423925][    C2]  <IRQ>
[  983.423971][    C2]  rt_fibinfo_free_cpus.part.0 (net/ipv4/fib_semantics.c:196)
[  983.424102][    C2]  fib_nh_common_release (net/ipv4/fib_semantics.c:141 net/ipv4/fib_semantics.c:207)
[  983.424190][    C2]  free_fib_info_rcu (./include/net/nexthop.h:480 net/ipv4/fib_semantics.c:229)
[  983.424276][    C2]  ? rcu_do_batch (kernel/rcu/tree.c:2605)
[  983.424363][    C2]  rcu_do_batch (./include/linux/rcupdate.h:341 (discriminator 1) kernel/rcu/tree.c:2607 (discriminator 1))
[  983.424490][    C2]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
[  983.424577][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 33))
[  983.424687][    C2]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 6) kernel/locking/lockdep.c:4411 (discriminator 6))
[  983.424840][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473)
[  983.424927][    C2]  ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 ./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[  983.425034][    C2]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 (discriminator 3) kernel/locking/spinlock.c:194 (discriminator 3))
[  983.425142][    C2]  rcu_core (kernel/rcu/tree.c:2859)
[  983.425249][    C2]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[  983.425337][    C2]  ? tasklet_unlock_wait (kernel/softirq.c:580)
[  983.425424][    C2]  ? __flush_smp_call_function_queue (kernel/smp.c:137 kernel/smp.c:593)
[  983.425535][    C2]  irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
[  983.425640][    C2]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1056 (discriminator 47) arch/x86/kernel/apic/apic.c:1056 (discriminator 47))
[  983.425727][    C2]  </IRQ>
[  983.425775][    C2]  <TASK>
[  983.425821][    C2]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  983.425929][    C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82)
[  983.426062][    C2] Code: 48 8b 3d c4 ac 71 02 e8 1f 00 00 00 48 2b 05 b8 22 9b 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 23 83 19 00 fb f4 <c3> 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01
All code
========
   0:	48 8b 3d c4 ac 71 02 	mov    0x271acc4(%rip),%rdi        # 0x271accb
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 b8 22 9b 00 	sub    0x9b22b8(%rip),%rax        # 0x9b22cb
  13:	c3                   	ret
  14:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1b:	f3 0f 1e fa          	endbr64
  1f:	eb 07                	jmp    0x28
  21:	0f 00 2d 23 83 19 00 	verw   0x198323(%rip)        # 0x19834b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	48 83 ec 20          	sub    $0x20,%rsp
  33:	8b 17                	mov    (%rdi),%edx
  35:	49 89 f8             	mov    %rdi,%r8
  38:	83 e2 fe             	and    $0xfffffffe,%edx
  3b:	41 89 d2             	mov    %edx,%r10d
  3e:	0f                   	.byte 0xf
  3f:	01                   	.byte 0x1

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	48 83 ec 20          	sub    $0x20,%rsp
   9:	8b 17                	mov    (%rdi),%edx
   b:	49 89 f8             	mov    %rdi,%r8
   e:	83 e2 fe             	and    $0xfffffffe,%edx
  11:	41 89 d2             	mov    %edx,%r10d
  14:	0f                   	.byte 0xf
  15:	01                   	.byte 0x1
[  983.426398][    C2] RSP: 0018:ffa0000000147de8 EFLAGS: 00000296
[  983.426507][    C2] RAX: 0000000002ed7735 RBX: ff11000001ada2c0 RCX: ffffffffa7284c3f
[  983.426638][    C2] RDX: ff11000001ada2c0 RSI: ffffffffaa00ff26 RDI: ffffffffa9a69f80
[  983.426818][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
[  983.426946][    C2] R10: 0000000000000002 R11: 0000000000000001 R12: 1ff4000000028fc0
[  983.427075][    C2] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
[  983.427242][    C2]  ? cpuidle_idle_call (kernel/sched/idle.c:192)
[  983.427329][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473)
[  983.427416][    C2]  default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:767)
[  983.427480][    C2]  default_idle_call (./include/linux/cpuidle.h:143 (discriminator 1) kernel/sched/idle.c:123 (discriminator 1))
[  983.427646][    C2]  cpuidle_idle_call (kernel/sched/idle.c:192)
[  983.427733][    C2]  ? arch_cpu_idle_exit+0x40/0x40
[  983.427821][    C2]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:52)
[  983.427906][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 33))
[  983.428052][    C2]  do_idle (kernel/sched/idle.c:332)
[  983.428117][    C2]  cpu_startup_entry (kernel/sched/idle.c:429)
[  983.428205][    C2]  start_secondary (arch/x86/kernel/smpboot.c:200 (discriminator 16) arch/x86/kernel/smpboot.c:280 (discriminator 16))
[  983.428290][    C2]  ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:230)


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