======================================
| [ 4253.080800][    C0] ==================================================================
| [ 4253.081258][    C0] BUG: KASAN: slab-use-after-free in dst_dev_put (net/core/dst.c:146)
| [ 4253.081615][    C0] Read of size 8 at addr ffff88800ca66f40 by task swapper/0/0
| [ 4253.081937][    C0]
[ 4253.082057][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4253.082059][    C0] Call Trace:
[ 4253.082062][    C0]  <IRQ>
[ 4253.082064][    C0]  dump_stack_lvl (lib/dump_stack.c:123)
[ 4253.082072][    C0]  print_address_description.constprop.0 (mm/kasan/report.c:379)
[ 4253.082080][    C0]  ? dst_dev_put (net/core/dst.c:146)
[ 4253.082084][    C0]  print_report (mm/kasan/report.c:483)
[ 4253.082088][    C0]  ? dst_dev_put (net/core/dst.c:146)
[ 4253.082091][    C0]  ? kasan_addr_to_slab (mm/kasan/../slab.h:178 mm/kasan/common.c:47)
[ 4253.082094][    C0]  ? dst_dev_put (net/core/dst.c:146)
[ 4253.082097][    C0]  kasan_report (mm/kasan/report.c:597)
[ 4253.082102][    C0]  ? dst_dev_put (net/core/dst.c:146)
[ 4253.082107][    C0]  dst_dev_put (net/core/dst.c:146)
[ 4253.082110][    C0]  rt_fibinfo_free_cpus.part.0 (net/ipv4/fib_semantics.c:196)
[ 4253.082118][    C0]  fib_nh_common_release (net/ipv4/fib_semantics.c:141 net/ipv4/fib_semantics.c:207)
[ 4253.082122][    C0]  free_fib_info_rcu (./include/net/nexthop.h:480 (discriminator 3) net/ipv4/fib_semantics.c:229 (discriminator 3))
[ 4253.082126][    C0]  ? nexthop_mpath_fill_node.constprop.0 (net/ipv4/fib_semantics.c:223)
[ 4253.082130][    C0]  rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2607)
[ 4253.082136][    C0]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
[ 4253.082140][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 4253.082147][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[ 4253.082152][    C0]  ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[ 4253.082158][    C0]  rcu_core (kernel/rcu/tree.c:2859)
[ 4253.082162][    C0]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[ 4253.082171][    C0]  __irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723)
[ 4253.082173][    C0]  irq_exit_rcu (kernel/softirq.c:741)
[ 4253.082176][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1056 arch/x86/kernel/apic/apic.c:1056)
[ 4253.082180][    C0]  </IRQ>
[ 4253.082182][    C0]  <TASK>
[ 4253.082184][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[ 4253.082188][    C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82)
[ 4253.082193][    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
[ 4253.082197][    C0] RSP: 0018:ffffffffb6207de8 EFLAGS: 00000202
[ 4253.082201][    C0] RAX: 0000000004658f5b RBX: 1ffffffff6c40fc1 RCX: ffffffffb500a255
[ 4253.082203][    C0] RDX: 0000000000000000 RSI: ffffffffb59fa925 RDI: ffffffffb546a600
[ 4253.082205][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed100da0631a
[ 4253.082206][    C0] R10: ffff88806d0318d3 R11: ffffffffb6232e50 R12: 0000000000000000
[ 4253.082208][    C0] R13: ffffffffb6232400 R14: dffffc0000000000 R15: 0000000000014770
[ 4253.082212][    C0]  ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146)
[ 4253.082216][    C0]  default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:767)
[ 4253.082218][    C0]  default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:123)
[ 4253.082221][    C0]  cpuidle_idle_call (kernel/sched/idle.c:192)
[ 4253.082225][    C0]  ? arch_cpu_idle_exit+0x40/0x40
[ 4253.082229][    C0]  ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60)
[ 4253.082235][    C0]  do_idle (kernel/sched/idle.c:332)
[ 4253.082238][    C0]  cpu_startup_entry (kernel/sched/idle.c:429 (discriminator 1))
[ 4253.082241][    C0]  rest_init (./include/linux/rcupdate.h:868 init/main.c:728)
[ 4253.082244][    C0]  start_kernel (init/main.c:1063 (discriminator 1))
[ 4253.082253][    C0]  x86_64_start_reservations (arch/x86/kernel/head64.c:298)
[ 4253.082257][    C0]  x86_64_start_kernel (arch/x86/kernel/head64.c:234 (discriminator 17))
[ 4253.082260][    C0]  common_startup_64 (arch/x86/kernel/head_64.S:419)
| [ 4253.113738][    C0] Disabling lock debugging due to kernel taint
| [ 4253.114010][    C0] Oops: general protection fault, probably for non-canonical address 0xe00fbc8d20000008: 0000 [#1] SMP KASAN
| [ 4253.114458][    C0] KASAN: maybe wild-memory-access in range [0x007e046900000040-0x007e046900000047]
| [ 4253.115229][    C0] Tainted: [B]=BAD_PAGE
[ 4253.115387][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4253.115649][    C0] RIP: 0010:dst_dev_put (net/core/dst.c:149)
[ 4253.115868][    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
[ 4253.116577][    C0] RSP: 0018:ffffc90000007d48 EFLAGS: 00010203
[ 4253.116846][    C0] RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: ffffffffb468b398
[ 4253.117157][    C0] RDX: 000fc08d20000008 RSI: 0000000000000008 RDI: 007e046900000044
[ 4253.117461][    C0] RBP: 007e04690000000c R08: 0000000000000001 R09: fffffbfff6f2a8c4
[ 4253.117765][    C0] R10: ffffffffb7954627 R11: ffffc90000007800 R12: ffff88800cc50c38
[ 4253.118066][    C0] R13: ffff88800ca66f40 R14: 0000000000000001 R15: ffff88800ca66f40
[ 4253.118373][    C0] FS:  0000000000000000(0000) GS:ffff8880b5718000(0000) knlGS:0000000000000000
[ 4253.118734][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4253.118984][    C0] CR2: 00007f1d97265000 CR3: 0000000066545002 CR4: 0000000000772ef0
[ 4253.119287][    C0] PKRU: 55555554
[ 4253.119447][    C0] Call Trace:
[ 4253.119599][    C0]  <IRQ>
[ 4253.119716][    C0]  rt_fibinfo_free_cpus.part.0 (net/ipv4/fib_semantics.c:196)
[ 4253.119927][    C0]  fib_nh_common_release (net/ipv4/fib_semantics.c:141 net/ipv4/fib_semantics.c:207)
[ 4253.120128][    C0]  free_fib_info_rcu (./include/net/nexthop.h:480 (discriminator 3) net/ipv4/fib_semantics.c:229 (discriminator 3))
[ 4253.120329][    C0]  ? nexthop_mpath_fill_node.constprop.0 (net/ipv4/fib_semantics.c:223)
[ 4253.120583][    C0]  rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2607)
[ 4253.120799][    C0]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
[ 4253.121003][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 4253.121255][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[ 4253.121461][    C0]  ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[ 4253.121716][    C0]  rcu_core (kernel/rcu/tree.c:2859)
[ 4253.121872][    C0]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[ 4253.122074][    C0]  __irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723)
[ 4253.122274][    C0]  irq_exit_rcu (kernel/softirq.c:741)
[ 4253.122429][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1056 arch/x86/kernel/apic/apic.c:1056)
[ 4253.122633][    C0]  </IRQ>
[ 4253.122752][    C0]  <TASK>
[ 4253.122854][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[ 4253.123104][    C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82)
[ 4253.123315][    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
[ 4253.124034][    C0] RSP: 0018:ffffffffb6207de8 EFLAGS: 00000202
[ 4253.124290][    C0] RAX: 0000000004658f5b RBX: 1ffffffff6c40fc1 RCX: ffffffffb500a255
[ 4253.124596][    C0] RDX: 0000000000000000 RSI: ffffffffb59fa925 RDI: ffffffffb546a600
[ 4253.124913][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed100da0631a
[ 4253.125231][    C0] R10: ffff88806d0318d3 R11: ffffffffb6232e50 R12: 0000000000000000
[ 4253.125536][    C0] R13: ffffffffb6232400 R14: dffffc0000000000 R15: 0000000000014770
[ 4253.125849][    C0]  ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146)
[ 4253.126101][    C0]  default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:767)
[ 4253.126253][    C0]  default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:123)
[ 4253.126461][    C0]  cpuidle_idle_call (kernel/sched/idle.c:192)
[ 4253.126668][    C0]  ? arch_cpu_idle_exit+0x40/0x40
[ 4253.126868][    C0]  ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60)
[ 4253.127071][    C0]  do_idle (kernel/sched/idle.c:332)
[ 4253.127222][    C0]  cpu_startup_entry (kernel/sched/idle.c:429 (discriminator 1))
[ 4253.127421][    C0]  rest_init (./include/linux/rcupdate.h:868 init/main.c:728)
[ 4253.127575][    C0]  start_kernel (init/main.c:1063 (discriminator 1))
[ 4253.127792][    C0]  x86_64_start_reservations (arch/x86/kernel/head64.c:298)
[ 4253.127995][    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