======================================
| [   11.368407][  T312] udpgso_bench_tx (312) used greatest stack depth: 22608 bytes left
| [   15.682916][    C3] ------------[ cut here ]------------
| [   15.683241][    C3] WARNING: ./include/linux/skbuff.h:3239 at __udp4_lib_err_encap+0x69a/0xad0, CPU#3: swapper/3/0
| [   15.683544][    C3] Modules linked in: geneve xt_bpf xt_length nft_compat nf_tables vxlan
[   15.684147][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.684330][    C3] RIP: 0010:__udp4_lib_err_encap (./include/linux/skbuff.h:3239 (discriminator 3) ./include/linux/skbuff.h:3235 (discriminator 3) net/ipv4/udp.c:864 (discriminator 3))
[   15.684510][    C3] Code: 84 02 00 00 0f b6 2e 83 e5 0f 90 0f 0b 90 e9 ef fa ff ff 90 0f 0b 90 90 0f 0b 90 e9 bd fc ff ff 90 0f 0b 90 e9 57 fa ff ff 90 <0f> 0b 90 e9 65 fa ff ff 4c 8b 74 24 20 4c 8b 6c 24 28 4d 89 fa 45
All code
========
   0:	84 02                	test   %al,(%rdx)
   2:	00 00                	add    %al,(%rax)
   4:	0f b6 2e             	movzbl (%rsi),%ebp
   7:	83 e5 0f             	and    $0xf,%ebp
   a:	90                   	nop
   b:	0f 0b                	ud2
   d:	90                   	nop
   e:	e9 ef fa ff ff       	jmp    0xfffffffffffffb02
  13:	90                   	nop
  14:	0f 0b                	ud2
  16:	90                   	nop
  17:	90                   	nop
  18:	0f 0b                	ud2
  1a:	90                   	nop
  1b:	e9 bd fc ff ff       	jmp    0xfffffffffffffcdd
  20:	90                   	nop
  21:	0f 0b                	ud2
  23:	90                   	nop
  24:	e9 57 fa ff ff       	jmp    0xfffffffffffffa80
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 65 fa ff ff       	jmp    0xfffffffffffffa97
  32:	4c 8b 74 24 20       	mov    0x20(%rsp),%r14
  37:	4c 8b 6c 24 28       	mov    0x28(%rsp),%r13
  3c:	4d 89 fa             	mov    %r15,%r10
  3f:	45                   	rex.RB

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 65 fa ff ff       	jmp    0xfffffffffffffa6d
   8:	4c 8b 74 24 20       	mov    0x20(%rsp),%r14
   d:	4c 8b 6c 24 28       	mov    0x28(%rsp),%r13
  12:	4d 89 fa             	mov    %r15,%r10
  15:	45                   	rex.RB
[   15.685035][    C3] RSP: 0018:ffa0000000280850 EFLAGS: 00010293
[   15.685209][    C3] RAX: ff1100000aa61fe4 RBX: ff110000053f6200 RCX: 0000000000000000
[   15.685415][    C3] RDX: ff1100000aa62000 RSI: ff1100000aa61fec RDI: fffffffffffffff8
[   15.685619][    C3] RBP: ff1100000aa61fc0 R08: ff1100000aa61fec R09: 0000000000000000
[   15.685826][    C3] R10: ff110000053f62b8 R11: 0000000000000001 R12: 0000000000000000
[   15.686036][    C3] R13: ff110000053f62c8 R14: ff110000053f62b6 R15: ff110000103f1f40
[   15.686244][    C3] FS:  0000000000000000(0000) GS:ff110000ac254000(0000) knlGS:0000000000000000
[   15.686486][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   15.686664][    C3] CR2: 00007fa1dcfa7668 CR3: 0000000070b4e003 CR4: 0000000000771ef0
[   15.686871][    C3] PKRU: 55555554
[   15.686981][    C3] Call Trace:
[   15.687084][    C3]  <IRQ>
[   15.687161][    C3]  udp_err (net/ipv4/udp.c:933)
[   15.687270][    C3]  icmp_unreach (net/ipv4/icmp.c:1196)
[   15.687406][    C3]  ? __skb_checksum_complete (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/linux/refcount.h:170 ./include/linux/skbuff.h:2112 net/core/skbuff.c:3785)
[   15.687546][    C3]  icmp_rcv (net/ipv4/icmp.c:1525 (discriminator 1))
[   15.687657][    C3]  ip_protocol_deliver_rcu (net/ipv4/ip_input.c:209)
[   15.687797][    C3]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6671 (discriminator 2))
[   15.687938][    C3]  ip_local_deliver_finish (./include/linux/rcupdate.h:867 net/ipv4/ip_input.c:242)
[   15.688075][    C3]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[   15.688214][    C3]  ip_local_deliver (net/ipv4/ip_input.c:259)
[   15.688350][    C3]  ? ip_local_deliver_finish (net/ipv4/ip_input.c:251)
[   15.688488][    C3]  ? ip_rcv_finish_core (net/ipv4/ip_input.c:409 (discriminator 1))
[   15.688624][    C3]  ? do_xdp_generic (net/core/dev.c:5979)
[   15.688770][    C3]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6671 (discriminator 2))
[   15.688909][    C3]  ip_rcv (./include/linux/netfilter.h:318 ./include/linux/netfilter.h:312 net/ipv4/ip_input.c:612)
[   15.689013][    C3]  ? ip_local_deliver (net/ipv4/ip_input.c:605)
[   15.689152][    C3]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 3) kernel/locking/lockdep.c:3821 (discriminator 3) kernel/locking/lockdep.c:3876 (discriminator 3))
[   15.689290][    C3]  ? mark_usage (kernel/locking/lockdep.c:4674 (discriminator 1))
[   15.689426][    C3]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   15.689561][    C3]  ? netif_close_many (./include/linux/list.h:127 ./include/linux/list.h:223 ./include/linux/list.h:295 net/core/dev.c:1799)
[   15.689705][    C3]  __netif_receive_skb_one_core (net/core/dev.c:6202)
[   15.689874][    C3]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[   15.690015][    C3]  ? __netif_receive_skb_list_core (net/core/dev.c:6202)
[   15.690187][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   15.690328][    C3]  process_backlog (./include/linux/rcupdate.h:867 net/core/dev.c:6674)
[   15.690467][    C3]  __napi_poll (net/core/dev.c:7737)
[   15.690572][    C3]  net_rx_action (net/core/dev.c:7800 net/core/dev.c:7957)
[   15.690718][    C3]  ? __napi_poll (net/core/dev.c:7919)
[   15.690856][    C3]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   15.691000][    C3]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 4) kernel/locking/spinlock.c:206 (discriminator 4))
[   15.691139][    C3]  ? run_timer_softirq (kernel/time/timer.c:2402)
[   15.691279][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   15.691418][    C3]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[   15.691556][    C3]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   15.691695][    C3]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[   15.691832][    C3]  ? _local_bh_enable (kernel/softirq.c:580)
[   15.691973][    C3]  __irq_exit_rcu (kernel/softirq.c:496 (discriminator 1) kernel/softirq.c:735 (discriminator 1))
[   15.692110][    C3]  irq_exit_rcu (kernel/softirq.c:754)
[   15.692213][    C3]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   15.692353][    C3]  </IRQ>
[   15.692423][    C3]  <TASK>
[   15.692492][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   15.692629][    C3]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   15.692805][    C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:63)
[   15.692954][    C3] Code: 48 8b 3d 54 63 61 02 e8 1f 00 00 00 48 2b 05 d8 61 9f 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 d4 15 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 54 63 61 02 	mov    0x2616354(%rip),%rdi        # 0x261635b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 d8 61 9f 00 	sub    0x9f61d8(%rip),%rax        # 0x9f61eb
  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 13 d4 15 00 	verw   0x15d413(%rip)        # 0x15d43b
  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
[   15.693445][    C3] RSP: 0018:ffa0000000167de8 EFLAGS: 00000296
[   15.693620][    C3] RAX: 00000000000ca0b9 RBX: ff11000001c78040 RCX: ffffffffb40de5db
[   15.693829][    C3] RDX: ff11000001c78040 RSI: ffffffffb708c4b8 RDI: ffffffffb6a71a40
[   15.694040][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   15.694246][    C3] R10: 0000000000000003 R11: 0000000000000001 R12: 1ff400000002cfc0
[   15.694452][    C3] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
[   15.694663][    C3]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:200)
[   15.694835][    C3]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473)
[   15.694973][    C3]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:767)
[   15.695077][    C3]  default_idle_call (./include/linux/cpuidle.h:143 (discriminator 1) kernel/sched/idle.c:123 (discriminator 1))
[   15.695214][    C3]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:200)
[   15.695385][    C3]  ? arch_cpu_idle_exit+0x40/0x40
[   15.695521][    C3]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:52)
[   15.695661][    C3]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 24))
[   15.695832][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   15.695973][    C3]  do_idle (kernel/sched/idle.c:352)
[   15.696077][    C3]  cpu_startup_entry (kernel/sched/idle.c:450 (discriminator 1))
[   15.696214][    C3]  start_secondary (arch/x86/kernel/smpboot.c:200 (discriminator 11) arch/x86/kernel/smpboot.c:280 (discriminator 11))
[   15.696351][    C3]  ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:230)
[   15.696491][    C3]  common_startup_64 (arch/x86/kernel/head_64.S:419)
| [   52.228009][    C2] ------------[ cut here ]------------
| [   52.228249][    C2] WARNING: ./include/linux/skbuff.h:3239 at __udp6_lib_err_encap+0x600/0x930, CPU#2: ksoftirqd/2/28
| [   52.228597][    C2] Modules linked in: geneve xt_bpf xt_length nft_compat nf_tables vxlan
| [   52.229173][    C2] Tainted: [W]=WARN
[   52.229311][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   52.229509][    C2] RIP: 0010:__udp6_lib_err_encap (./include/linux/skbuff.h:3239 (discriminator 3) ./include/linux/skbuff.h:3235 (discriminator 3) net/ipv6/udp.c:652 (discriminator 3))
[   52.229728][    C2] Code: 08 84 d2 0f 85 4f 02 00 00 44 8b 4b 28 e9 a9 fe ff ff 4c 8b 6c 24 20 4c 8b 7c 24 28 45 31 e4 4c 8b 74 24 30 e9 ce fd ff ff 90 <0f> 0b 90 48 29 c5 48 89 e8 48 81 fd ff ff 00 00 0f 86 09 fb ff ff
All code
========
   0:	08 84 d2 0f 85 4f 02 	or     %al,0x24f850f(%rdx,%rdx,8)
   7:	00 00                	add    %al,(%rax)
   9:	44 8b 4b 28          	mov    0x28(%rbx),%r9d
   d:	e9 a9 fe ff ff       	jmp    0xfffffffffffffebb
  12:	4c 8b 6c 24 20       	mov    0x20(%rsp),%r13
  17:	4c 8b 7c 24 28       	mov    0x28(%rsp),%r15
  1c:	45 31 e4             	xor    %r12d,%r12d
  1f:	4c 8b 74 24 30       	mov    0x30(%rsp),%r14
  24:	e9 ce fd ff ff       	jmp    0xfffffffffffffdf7
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 29 c5             	sub    %rax,%rbp
  30:	48 89 e8             	mov    %rbp,%rax
  33:	48 81 fd ff ff 00 00 	cmp    $0xffff,%rbp
  3a:	0f 86 09 fb ff ff    	jbe    0xfffffffffffffb49

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 29 c5             	sub    %rax,%rbp
   6:	48 89 e8             	mov    %rbp,%rax
   9:	48 81 fd ff ff 00 00 	cmp    $0xffff,%rbp
  10:	0f 86 09 fb ff ff    	jbe    0xfffffffffffffb1f
[   52.230217][    C2] RSP: 0018:ffa00000001ff4b8 EFLAGS: 00010293
[   52.230416][    C2] RAX: ff110000094cb840 RBX: ff1100000dc3fe00 RCX: ff110000094cb8b0
[   52.230662][    C2] RDX: ff110000094cb880 RSI: ff110000094cb888 RDI: fffffffffffffff8
[   52.230891][    C2] RBP: ff110000094cb888 R08: 1fe2200001b87fda R09: ff1100000dc3fe00
[   52.231119][    C2] R10: ff110000103f3e40 R11: 0000000000000004 R12: 0000000000000000
[   52.231347][    C2] R13: ff1100000dc3feb6 R14: ff1100000dc3fec8 R15: ff1100000dc3feb8
[   52.231581][    C2] FS:  0000000000000000(0000) GS:ff110000ac1d4000(0000) knlGS:0000000000000000
[   52.231859][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.232058][    C2] CR2: 00007f8b865bb110 CR3: 000000000ffcd004 CR4: 0000000000771ef0
[   52.232288][    C2] PKRU: 55555554
[   52.232425][    C2] Call Trace:
[   52.232562][    C2]  <TASK>
[   52.232682][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   52.232865][    C2]  udpv6_err (net/ipv6/udp.c:714)
[   52.233009][    C2]  ? __udp6_lib_err_encap (net/ipv6/udp.c:695)
[   52.233178][    C2]  icmpv6_notify (net/ipv6/icmp.c:1087)
[   52.233349][    C2]  ? icmpv6_param_prob_reason (net/ipv6/icmp.c:1039)
[   52.233516][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[   52.233692][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   52.233868][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[   52.234041][    C2]  icmpv6_rcv (net/ipv6/icmp.c:1230)
[   52.234213][    C2]  ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:480)
[   52.234388][    C2]  ip6_input_finish (net/ipv6/ip6_input.c:532)
[   52.234555][    C2]  ip6_input (./include/linux/rcupdate.h:867 net/ipv6/ip6_input.c:543)
[   52.234706][    C2]  ? ip6_input_finish (net/ipv6/ip6_input.c:536)
[   52.234882][    C2]  ? ip6_rcv_core (./include/linux/skbuff.h:3395 net/ipv6/ip6_input.c:332)
[   52.235055][    C2]  ipv6_rcv (./include/net/dst.h:480 (discriminator 4) net/ipv6/ip6_input.c:119 (discriminator 4) ./include/linux/netfilter.h:318 (discriminator 4) ./include/linux/netfilter.h:312 (discriminator 4) net/ipv6/ip6_input.c:351 (discriminator 4))
[   52.235193][    C2]  ? ip6_rcv_core (net/ipv6/ip6_input.c:345)
[   52.235364][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 3) kernel/locking/lockdep.c:3821 (discriminator 3) kernel/locking/lockdep.c:3876 (discriminator 3))
[   52.235532][    C2]  ? kmem_cache_free (mm/slub.c:6165 (discriminator 3) mm/slub.c:6295 (discriminator 3))
[   52.235712][    C2]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   52.235887][    C2]  ? rcu_core (kernel/rcu/tree.c:2871)
[   52.236026][    C2]  ? mark_usage (kernel/locking/lockdep.c:4674 (discriminator 1))
[   52.236194][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   52.236363][    C2]  ? __wait_rcu_gp (./include/linux/completion.h:87 kernel/rcu/update.c:429)
[   52.236533][    C2]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6671 (discriminator 2))
[   52.236718][    C2]  __netif_receive_skb_one_core (net/core/dev.c:6202)
[   52.236923][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[   52.237090][    C2]  ? __netif_receive_skb_list_core (net/core/dev.c:6202)
[   52.237289][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   52.237459][    C2]  process_backlog (./include/linux/rcupdate.h:867 net/core/dev.c:6674)
[   52.237631][    C2]  __napi_poll (net/core/dev.c:7737)
[   52.237783][    C2]  net_rx_action (net/core/dev.c:7800 net/core/dev.c:7957)
[   52.237961][    C2]  ? __napi_poll (net/core/dev.c:7919)
[   52.238127][    C2]  ? __print_lock_name (kernel/locking/lockdep.c:670 kernel/locking/lockdep.c:724)
[   52.238294][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   52.238467][    C2]  ? trace_sched_exit_tp (./include/trace/events/sched.h:886 (discriminator 24))
[   52.238636][    C2]  ? __schedule (kernel/sched/core.c:7012)
[   52.238820][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   52.238995][    C2]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[   52.239165][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   52.239337][    C2]  ? _local_bh_enable (kernel/softirq.c:580)
[   52.239506][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   52.239687][    C2]  run_ksoftirqd (kernel/softirq.c:479 kernel/softirq.c:1077 kernel/softirq.c:1068)
[   52.239860][    C2]  smpboot_thread_fn (kernel/smpboot.c:160)
[   52.240031][    C2]  ? sort_range (kernel/smpboot.c:103)
[   52.240168][    C2]  kthread (kernel/kthread.c:436)
[   52.240306][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 24))
[   52.240504][    C2]  ? kthread_affine_node (kernel/kthread.c:381)
[   52.240688][    C2]  ret_from_fork (arch/x86/kernel/process.c:164)
[   52.240864][    C2]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   52.241062][    C2]  ? __switch_to (./arch/x86/include/asm/cpufeature.h:101 (discriminator 1) arch/x86/kernel/process_64.c:377 (discriminator 1) arch/x86/kernel/process_64.c:665 (discriminator 1))
[   52.241231][    C2]  ? kthread_affine_node (kernel/kthread.c:381)


Finger prints:
__udp6_lib_err_encap:udpv6_err:icmpv6_notify:icmpv6_rcv:ip6_protocol_deliver_rcu
__udp4_lib_err_encap:udp_err:icmp_unreach:icmp_rcv:ip_protocol_deliver_rcu