======================================
| [   18.350641][    C0] ==================================================================
| [   18.350953][    C0] BUG: KASAN: slab-use-after-free in dst_dev_put (net/core/dst.c:146)
| [   18.351245][    C0] Read of size 8 at addr ffff88800c796340 by task swapper/0/0
| [   18.351530][    C0]
[   18.351633][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.351635][    C0] Call Trace:
[   18.351637][    C0]  <IRQ>
[   18.351639][    C0]  dump_stack_lvl (lib/dump_stack.c:123)
[   18.351645][    C0]  print_address_description.constprop.0 (mm/kasan/report.c:379)
[   18.351651][    C0]  ? dst_dev_put (net/core/dst.c:146)
[   18.351655][    C0]  print_report (mm/kasan/report.c:483)
[   18.351658][    C0]  ? dst_dev_put (net/core/dst.c:146)
[   18.351661][    C0]  ? kasan_addr_to_slab (mm/kasan/../slab.h:178 mm/kasan/common.c:47)
[   18.351665][    C0]  ? dst_dev_put (net/core/dst.c:146)
[   18.351667][    C0]  kasan_report (mm/kasan/report.c:597)
[   18.351672][    C0]  ? dst_dev_put (net/core/dst.c:146)
[   18.351677][    C0]  dst_dev_put (net/core/dst.c:146)
[   18.351680][    C0]  rt_fibinfo_free_cpus.part.0 (net/ipv4/fib_semantics.c:196)
[   18.351686][    C0]  fib_nh_common_release (net/ipv4/fib_semantics.c:141 net/ipv4/fib_semantics.c:207)
[   18.351690][    C0]  free_fib_info_rcu (./include/net/nexthop.h:480 (discriminator 3) net/ipv4/fib_semantics.c:229 (discriminator 3))
[   18.351694][    C0]  ? nexthop_mpath_fill_node.constprop.0 (net/ipv4/fib_semantics.c:223)
[   18.351698][    C0]  rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2607)
[   18.351704][    C0]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
[   18.351707][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[   18.351713][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   18.351718][    C0]  ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[   18.351723][    C0]  rcu_core (kernel/rcu/tree.c:2859)
[   18.351727][    C0]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[   18.351734][    C0]  __irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723)
[   18.351737][    C0]  irq_exit_rcu (kernel/softirq.c:741)
[   18.351740][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1056 arch/x86/kernel/apic/apic.c:1056)
[   18.351744][    C0]  </IRQ>
[   18.351745][    C0]  <TASK>
[   18.351746][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   18.351750][    C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82)
[   18.351754][    C0] Code: 48 8b 3d 34 31 90 02 e8 1f 00 00 00 48 2b 05 28 07 a9 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d d3 d6 28 00 fb f4 <c3> 0f 1f 40 d6 41 54 55 53 48 89 fb 48 83 ec 10 8b 17 83 e2 fe 41
All code
========
   0:	48 8b 3d 34 31 90 02 	mov    0x2903134(%rip),%rdi        # 0x290313b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 28 07 a9 00 	sub    0xa90728(%rip),%rax        # 0xa9073b
  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 d3 d6 28 00 	verw   0x28d6d3(%rip)        # 0x28d6fb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	41 54                	push   %r12
  31:	55                   	push   %rbp
  32:	53                   	push   %rbx
  33:	48 89 fb             	mov    %rdi,%rbx
  36:	48 83 ec 10          	sub    $0x10,%rsp
  3a:	8b 17                	mov    (%rdi),%edx
  3c:	83 e2 fe             	and    $0xfffffffe,%edx
  3f:	41                   	rex.B

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	41 54                	push   %r12
   7:	55                   	push   %rbp
   8:	53                   	push   %rbx
   9:	48 89 fb             	mov    %rdi,%rbx
   c:	48 83 ec 10          	sub    $0x10,%rsp
  10:	8b 17                	mov    (%rdi),%edx
  12:	83 e2 fe             	and    $0xfffffffe,%edx
  15:	41                   	rex.B
[   18.351757][    C0] RSP: 0018:ffffffff9ac07de8 EFLAGS: 00000206
[   18.351761][    C0] RAX: 000000000005b1f3 RBX: 1ffffffff3580fc1 RCX: ffffffff99a0a255
[   18.351763][    C0] RDX: 0000000000000000 RSI: ffffffff9a3fa925 RDI: ffffffff99e6a600
[   18.351765][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed100da0631a
[   18.351766][    C0] R10: ffff88806d0318d3 R11: ffffffff9ac32e50 R12: 0000000000000000
[   18.351768][    C0] R13: ffffffff9ac32400 R14: dffffc0000000000 R15: 0000000000014770
[   18.351772][    C0]  ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146)
[   18.351777][    C0]  default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:767)
[   18.351779][    C0]  default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:123)
[   18.351781][    C0]  cpuidle_idle_call (kernel/sched/idle.c:192)
[   18.351785][    C0]  ? arch_cpu_idle_exit+0x40/0x40
[   18.351789][    C0]  ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60)
[   18.351793][    C0]  do_idle (kernel/sched/idle.c:332)
[   18.351797][    C0]  cpu_startup_entry (kernel/sched/idle.c:429 (discriminator 1))
[   18.351799][    C0]  rest_init (./include/linux/rcupdate.h:868 init/main.c:728)
[   18.351803][    C0]  start_kernel (init/main.c:1063 (discriminator 1))
[   18.351809][    C0]  x86_64_start_reservations (arch/x86/kernel/head64.c:298)
[   18.351812][    C0]  x86_64_start_kernel (arch/x86/kernel/head64.c:234 (discriminator 17))
[   18.351816][    C0]  common_startup_64 (arch/x86/kernel/head_64.S:419)
| [   18.382157][    C0] Disabling lock debugging due to kernel taint
| [   18.382406][    C0] Oops: general protection fault, probably for non-canonical address 0xe09a3c3820000008: 0000 [#1] SMP KASAN
| [   18.382813][    C0] KASAN: maybe wild-memory-access in range [0x04d201c100000040-0x04d201c100000047]
| [   18.383603][    C0] Tainted: [B]=BAD_PAGE
[   18.383743][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.383973][    C0] RIP: 0010:dst_dev_put (net/core/dst.c:149)
[   18.384161][    C0] Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 9c 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 6d 08 48 8d 7d 38 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 6f 01 00 00 48 8b 45 38 48 85 c0 74 08 4c 89 e6
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 9c 01 00 00 48 b8 	test   %ebx,-0x47b80000(%rcx,%rax,1)
  13:	00 00                	add    %al,(%rax)
  15:	00 00                	add    %al,(%rax)
  17:	00 fc                	add    %bh,%ah
  19:	ff                   	lcall  (bad)
  1a:	df 49 8b             	fisttps -0x75(%rcx)
  1d:	6d                   	insl   (%dx),%es:(%rdi)
  1e:	08 48 8d             	or     %cl,-0x73(%rax)
  21:	7d 38                	jge    0x5b
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
  2a:*	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)		<-- trapping instruction
  2e:	0f 85 6f 01 00 00    	jne    0x1a3
  34:	48 8b 45 38          	mov    0x38(%rbp),%rax
  38:	48 85 c0             	test   %rax,%rax
  3b:	74 08                	je     0x45
  3d:	4c 89 e6             	mov    %r12,%rsi

Code starting with the faulting instruction
===========================================
   0:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   4:	0f 85 6f 01 00 00    	jne    0x179
   a:	48 8b 45 38          	mov    0x38(%rbp),%rax
   e:	48 85 c0             	test   %rax,%rax
  11:	74 08                	je     0x1b
  13:	4c 89 e6             	mov    %r12,%rsi
[   18.385054][    C0] RSP: 0018:ffffc90000007d48 EFLAGS: 00010203
[   18.385287][    C0] RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: ffffffff9908b428
[   18.385677][    C0] RDX: 009a403820000008 RSI: 0000000000000008 RDI: 04d201c100000044
[   18.385949][    C0] RBP: 04d201c10000000c R08: 0000000000000001 R09: fffffbfff386a8c4
[   18.386221][    C0] R10: ffffffff9c354627 R11: ffffc90000007800 R12: ffff88800c796040
[   18.386609][    C0] R13: ffff88800c796340 R14: 0000000000000000 R15: ffff88800c796340
[   18.386886][    C0] FS:  0000000000000000(0000) GS:ffff8880d0d18000(0000) knlGS:0000000000000000
[   18.387200][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.387427][    C0] CR2: 00007f7149722000 CR3: 000000005cb45001 CR4: 0000000000772ef0
[   18.387700][    C0] PKRU: 55555554
[   18.387842][    C0] Call Trace:
[   18.388210][    C0]  <IRQ>
[   18.388304][    C0]  rt_fibinfo_free_cpus.part.0 (net/ipv4/fib_semantics.c:196)
[   18.388490][    C0]  fib_nh_common_release (net/ipv4/fib_semantics.c:141 net/ipv4/fib_semantics.c:207)
[   18.388672][    C0]  free_fib_info_rcu (./include/net/nexthop.h:480 (discriminator 3) net/ipv4/fib_semantics.c:229 (discriminator 3))
[   18.388856][    C0]  ? nexthop_mpath_fill_node.constprop.0 (net/ipv4/fib_semantics.c:223)
[   18.389082][    C0]  rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2607)
[   18.389269][    C0]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
[   18.389453][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[   18.389680][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   18.389862][    C0]  ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[   18.390089][    C0]  rcu_core (kernel/rcu/tree.c:2859)
[   18.390343][    C0]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[   18.390642][    C0]  __irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723)
[   18.390825][    C0]  irq_exit_rcu (kernel/softirq.c:741)
[   18.390964][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1056 arch/x86/kernel/apic/apic.c:1056)
[   18.391146][    C0]  </IRQ>
[   18.391239][    C0]  <TASK>
[   18.391331][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   18.391671][    C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82)
[   18.391859][    C0] Code: 48 8b 3d 34 31 90 02 e8 1f 00 00 00 48 2b 05 28 07 a9 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d d3 d6 28 00 fb f4 <c3> 0f 1f 40 d6 41 54 55 53 48 89 fb 48 83 ec 10 8b 17 83 e2 fe 41
All code
========
   0:	48 8b 3d 34 31 90 02 	mov    0x2903134(%rip),%rdi        # 0x290313b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 28 07 a9 00 	sub    0xa90728(%rip),%rax        # 0xa9073b
  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 d3 d6 28 00 	verw   0x28d6d3(%rip)        # 0x28d6fb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	41 54                	push   %r12
  31:	55                   	push   %rbp
  32:	53                   	push   %rbx
  33:	48 89 fb             	mov    %rdi,%rbx
  36:	48 83 ec 10          	sub    $0x10,%rsp
  3a:	8b 17                	mov    (%rdi),%edx
  3c:	83 e2 fe             	and    $0xfffffffe,%edx
  3f:	41                   	rex.B

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	41 54                	push   %r12
   7:	55                   	push   %rbp
   8:	53                   	push   %rbx
   9:	48 89 fb             	mov    %rdi,%rbx
   c:	48 83 ec 10          	sub    $0x10,%rsp
  10:	8b 17                	mov    (%rdi),%edx
  12:	83 e2 fe             	and    $0xfffffffe,%edx
  15:	41                   	rex.B
[   18.392502][    C0] RSP: 0018:ffffffff9ac07de8 EFLAGS: 00000206
[   18.392730][    C0] RAX: 000000000005b1f3 RBX: 1ffffffff3580fc1 RCX: ffffffff99a0a255
[   18.393237][    C0] RDX: 0000000000000000 RSI: ffffffff9a3fa925 RDI: ffffffff99e6a600
[   18.393507][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed100da0631a
[   18.393783][    C0] R10: ffff88806d0318d3 R11: ffffffff9ac32e50 R12: 0000000000000000
[   18.394052][    C0] R13: ffffffff9ac32400 R14: dffffc0000000000 R15: 0000000000014770
[   18.394327][    C0]  ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146)
[   18.394557][    C0]  default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:767)
[   18.394692][    C0]  default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:123)
[   18.394877][    C0]  cpuidle_idle_call (kernel/sched/idle.c:192)
[   18.395065][    C0]  ? arch_cpu_idle_exit+0x40/0x40
[   18.395246][    C0]  ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60)
[   18.395429][    C0]  do_idle (kernel/sched/idle.c:332)
[   18.395684][    C0]  cpu_startup_entry (kernel/sched/idle.c:429 (discriminator 1))
[   18.395866][    C0]  rest_init (./include/linux/rcupdate.h:868 init/main.c:728)
[   18.396003][    C0]  start_kernel (init/main.c:1063 (discriminator 1))
[   18.396300][    C0]  x86_64_start_reservations (arch/x86/kernel/head64.c:298)
[   18.396486][    C0]  x86_64_start_kernel (arch/x86/kernel/head64.c:234 (discriminator 17))


Finger prints:
dst_dev_put:fib_nh_common_release:free_fib_info_rcu:rcu_do_batch:rcu_core
print_report:kasan_report:dst_dev_put:fib_nh_common_release:free_fib_info_rcu