======================================
| [ 1176.853592][    C1] ==================================================================
| [ 1176.853908][    C1] BUG: KASAN: slab-use-after-free in dst_dev_put (net/core/dst.c:146)
| [ 1176.854174][    C1] Read of size 8 at addr ffff8880027861c0 by task swapper/1/0
| [ 1176.854429][    C1]
[ 1176.854528][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1176.854531][    C1] Call Trace:
[ 1176.854533][    C1]  <IRQ>
[ 1176.854535][    C1]  dump_stack_lvl (lib/dump_stack.c:123)
[ 1176.854543][    C1]  print_address_description.constprop.0 (mm/kasan/report.c:379)
[ 1176.854552][    C1]  ? dst_dev_put (net/core/dst.c:146)
[ 1176.854555][    C1]  print_report (mm/kasan/report.c:483)
[ 1176.854559][    C1]  ? dst_dev_put (net/core/dst.c:146)
[ 1176.854562][    C1]  ? kasan_addr_to_slab (mm/kasan/../slab.h:178 mm/kasan/common.c:47)
[ 1176.854566][    C1]  ? dst_dev_put (net/core/dst.c:146)
[ 1176.854569][    C1]  kasan_report (mm/kasan/report.c:597)
[ 1176.854574][    C1]  ? dst_dev_put (net/core/dst.c:146)
[ 1176.854579][    C1]  dst_dev_put (net/core/dst.c:146)
[ 1176.854582][    C1]  rt_fibinfo_free_cpus.part.0 (net/ipv4/fib_semantics.c:196)
[ 1176.854590][    C1]  fib_nh_common_release (net/ipv4/fib_semantics.c:141 net/ipv4/fib_semantics.c:207)
[ 1176.854594][    C1]  free_fib_info_rcu (./include/net/nexthop.h:480 (discriminator 3) net/ipv4/fib_semantics.c:229 (discriminator 3))
[ 1176.854598][    C1]  ? nexthop_mpath_fill_node.constprop.0 (net/ipv4/fib_semantics.c:223)
[ 1176.854601][    C1]  rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2607)
[ 1176.854608][    C1]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
[ 1176.854611][    C1]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 1176.854618][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[ 1176.854624][    C1]  ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[ 1176.854629][    C1]  rcu_core (kernel/rcu/tree.c:2859)
[ 1176.854633][    C1]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[ 1176.854642][    C1]  __irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723)
[ 1176.854645][    C1]  irq_exit_rcu (kernel/softirq.c:741)
[ 1176.854648][    C1]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1056 arch/x86/kernel/apic/apic.c:1056)
[ 1176.854651][    C1]  </IRQ>
[ 1176.854652][    C1]  <TASK>
[ 1176.854654][    C1]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[ 1176.854658][    C1] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82)
[ 1176.854662][    C1] 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
[ 1176.854665][    C1] RSP: 0018:ffffc90000137dd8 EFLAGS: 00000202
[ 1176.854669][    C1] RAX: 0000000002a9a361 RBX: 1ffff92000026fbf RCX: ffffffff8cc0a255
[ 1176.854671][    C1] RDX: 0000000000000000 RSI: ffffffff8d5fa925 RDI: ffffffff8d06a600
[ 1176.854673][    C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed100da1631a
[ 1176.854675][    C1] R10: ffff88806d0b18d3 R11: ffff888001ae0a90 R12: 0000000000000000
[ 1176.854676][    C1] R13: ffff888001ae0040 R14: dffffc0000000000 R15: 0000000000000000
[ 1176.854680][    C1]  ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146)
[ 1176.854685][    C1]  default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:767)
[ 1176.854687][    C1]  default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:123)
[ 1176.854689][    C1]  cpuidle_idle_call (kernel/sched/idle.c:192)
[ 1176.854694][    C1]  ? arch_cpu_idle_exit+0x40/0x40
[ 1176.854697][    C1]  ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60)
[ 1176.854704][    C1]  do_idle (kernel/sched/idle.c:332)
[ 1176.854707][    C1]  cpu_startup_entry (kernel/sched/idle.c:429 (discriminator 1))
[ 1176.854710][    C1]  start_secondary (arch/x86/kernel/smpboot.c:200 arch/x86/kernel/smpboot.c:280)
[ 1176.854713][    C1]  ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:230)
[ 1176.854718][    C1]  common_startup_64 (arch/x86/kernel/head_64.S:419)
| [ 1176.881131][    C1] Disabling lock debugging due to kernel taint
| [ 1176.881358][    C1] Oops: general protection fault, probably for non-canonical address 0xe0a5fc8640000008: 0000 [#1] SMP KASAN
| [ 1176.881734][    C1] KASAN: maybe wild-memory-access in range [0x0530043200000040-0x0530043200000047]
| [ 1176.882346][    C1] Tainted: [B]=BAD_PAGE
[ 1176.882475][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1176.882685][    C1] RIP: 0010:dst_dev_put (net/core/dst.c:149)
[ 1176.882862][    C1] 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
[ 1176.883446][    C1] RSP: 0018:ffffc900001c0d48 EFLAGS: 00010203
[ 1176.883662][    C1] RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: ffffffff8c28b398
[ 1176.883913][    C1] RDX: 00a6008640000008 RSI: 0000000000000008 RDI: 0530043200000044
[ 1176.884159][    C1] RBP: 053004320000000c R08: 0000000000000001 R09: fffffbfff1eaa8c4
[ 1176.884405][    C1] R10: ffffffff8f554627 R11: ffffc900001c0800 R12: ffff888001ebc3b0
[ 1176.884651][    C1] R13: ffff8880027861c0 R14: 0000000000000000 R15: ffff8880027861c0
[ 1176.884906][    C1] FS:  0000000000000000(0000) GS:ffff8880ddb98000(0000) knlGS:0000000000000000
[ 1176.885193][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1176.885403][    C1] CR2: 00007fb2b693f000 CR3: 000000005cf45005 CR4: 0000000000772ef0
[ 1176.885653][    C1] PKRU: 55555554
[ 1176.885777][    C1] Call Trace:
[ 1176.885902][    C1]  <IRQ>
[ 1176.885989][    C1]  rt_fibinfo_free_cpus.part.0 (net/ipv4/fib_semantics.c:196)
[ 1176.886157][    C1]  fib_nh_common_release (net/ipv4/fib_semantics.c:141 net/ipv4/fib_semantics.c:207)
[ 1176.886325][    C1]  free_fib_info_rcu (./include/net/nexthop.h:480 (discriminator 3) net/ipv4/fib_semantics.c:229 (discriminator 3))
[ 1176.886490][    C1]  ? nexthop_mpath_fill_node.constprop.0 (net/ipv4/fib_semantics.c:223)
[ 1176.886697][    C1]  rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2607)
[ 1176.886861][    C1]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
[ 1176.887032][    C1]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 1176.887237][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[ 1176.887404][    C1]  ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[ 1176.887608][    C1]  rcu_core (kernel/rcu/tree.c:2859)
[ 1176.887732][    C1]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[ 1176.887898][    C1]  __irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723)
[ 1176.888063][    C1]  irq_exit_rcu (kernel/softirq.c:741)
[ 1176.888185][    C1]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1056 arch/x86/kernel/apic/apic.c:1056)
[ 1176.888353][    C1]  </IRQ>
[ 1176.888437][    C1]  <TASK>
[ 1176.888521][    C1]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[ 1176.888724][    C1] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82)
[ 1176.888895][    C1] 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
[ 1176.889482][    C1] RSP: 0018:ffffc90000137dd8 EFLAGS: 00000202
[ 1176.889694][    C1] RAX: 0000000002a9a361 RBX: 1ffff92000026fbf RCX: ffffffff8cc0a255
[ 1176.889941][    C1] RDX: 0000000000000000 RSI: ffffffff8d5fa925 RDI: ffffffff8d06a600
[ 1176.890187][    C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed100da1631a
[ 1176.890438][    C1] R10: ffff88806d0b18d3 R11: ffff888001ae0a90 R12: 0000000000000000
[ 1176.890686][    C1] R13: ffff888001ae0040 R14: dffffc0000000000 R15: 0000000000000000
[ 1176.890938][    C1]  ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146)
[ 1176.891143][    C1]  default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:767)
[ 1176.891268][    C1]  default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:123)
[ 1176.891429][    C1]  cpuidle_idle_call (kernel/sched/idle.c:192)
[ 1176.891601][    C1]  ? arch_cpu_idle_exit+0x40/0x40
[ 1176.891771][    C1]  ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60)
[ 1176.891939][    C1]  do_idle (kernel/sched/idle.c:332)
[ 1176.892063][    C1]  cpu_startup_entry (kernel/sched/idle.c:429 (discriminator 1))
[ 1176.892227][    C1]  start_secondary (arch/x86/kernel/smpboot.c:200 arch/x86/kernel/smpboot.c:280)
[ 1176.892392][    C1]  ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:230)


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