======================================
| [   32.945817][   T50] br1: port 3(veth2) entered forwarding state
| [   35.235202][    C3] ------------[ cut here ]------------
| [   35.235518][    C3] kernel BUG at net/core/skbuff.c:3505!
| [   35.235727][    C3] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
[   35.236183][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 35.236553][ C3] RIP: 0010:__skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[ 35.236724][ C3] Code: 44 89 14 24 ff d0 0f 1f 00 4c 8b 44 24 08 44 8b 14 24 41 89 c1 eb a5 89 e8 e9 2d fe ff ff 41 ff d5 0f 1f 00 e9 1f fa ff ff 90 <0f> 0b 48 8b 7c 24 10 89 54 24 48 48 89 44 24 40 e8 17 a6 91 fe 8b
All code
========
   0:	44 89 14 24          	mov    %r10d,(%rsp)
   4:	ff d0                	call   *%rax
   6:	0f 1f 00             	nopl   (%rax)
   9:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
   e:	44 8b 14 24          	mov    (%rsp),%r10d
  12:	41 89 c1             	mov    %eax,%r9d
  15:	eb a5                	jmp    0xffffffffffffffbc
  17:	89 e8                	mov    %ebp,%eax
  19:	e9 2d fe ff ff       	jmp    0xfffffffffffffe4b
  1e:	41 ff d5             	call   *%r13
  21:	0f 1f 00             	nopl   (%rax)
  24:	e9 1f fa ff ff       	jmp    0xfffffffffffffa48
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	48 8b 7c 24 10       	mov    0x10(%rsp),%rdi
  31:	89 54 24 48          	mov    %edx,0x48(%rsp)
  35:	48 89 44 24 40       	mov    %rax,0x40(%rsp)
  3a:	e8 17 a6 91 fe       	call   0xfffffffffe91a656
  3f:	8b                   	.byte 0x8b

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	48 8b 7c 24 10       	mov    0x10(%rsp),%rdi
   7:	89 54 24 48          	mov    %edx,0x48(%rsp)
   b:	48 89 44 24 40       	mov    %rax,0x40(%rsp)
  10:	e8 17 a6 91 fe       	call   0xfffffffffe91a62c
  15:	8b                   	.byte 0x8b
[   35.237288][    C3] RSP: 0018:ffffc90000278910 EFLAGS: 00010202
[   35.237494][    C3] RAX: 000000000000f270 RBX: 0000000000000008 RCX: 1ffff11005e8ba99
[   35.237743][    C3] RDX: 000000000000007a RSI: dffffc0000000000 RDI: ffff88802f45d4c8
[   35.237990][    C3] RBP: 000000000000f270 R08: 0000000000000008 R09: fffffbfff425c5ea
[   35.238236][    C3] R10: ffffffffa12e2f57 R11: dffffc0000000000 R12: 0000000000000008
[   35.238476][    C3] R13: 0000000000000000 R14: ffffc900002789d0 R15: ffff888009cb9b08
[   35.238721][    C3] FS:  0000000000000000(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   35.239001][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   35.239204][    C3] CR2: 00007fcae9589270 CR3: 0000000006534001 CR4: 0000000000770ef0
[   35.239447][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   35.239697][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   35.239937][    C3] PKRU: 55555554
[   35.240059][    C3] Call Trace:
[   35.240182][    C3]  <IRQ>
[ 35.240262][ C3] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) 
[ 35.240388][ C3] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) 
[ 35.240512][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[ 35.240677][ C3] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) 
[ 35.240842][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[ 35.241002][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[ 35.241168][ C3] ? handle_invalid_op (arch/x86/kernel/traps.c:213) 
[ 35.241331][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[ 35.241488][ C3] ? exc_invalid_op (arch/x86/kernel/traps.c:265) 
[ 35.241651][ C3] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 35.241817][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[ 35.241981][ C3] __skb_checksum_complete (net/core/skbuff.c:3643) 
[ 35.242144][ C3] ? __pfx___skb_checksum_complete (net/core/skbuff.c:3637) 
[ 35.242355][ C3] ? __pfx_csum_partial_ext (./include/net/checksum.h:120) 
[ 35.242514][ C3] ? __pfx_csum_block_add_ext (./include/net/checksum.h:103) 
[ 35.242680][ C3] icmp_rcv (./include/linux/skbuff.h:4567 net/ipv4/icmp.c:1213) 
[ 35.242808][ C3] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) 
[ 35.242967][ C3] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 35.243125][ C3] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) 
[ 35.243282][ C3] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) 
[ 35.243444][ C3] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1136 ./include/linux/skbuff.h:1188 net/ipv4/ip_input.c:390) 
[ 35.243642][ C3] ip_rcv (./include/net/dst.h:460 net/ipv4/ip_input.c:449 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:569) 
[ 35.243764][ C3] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 35.243923][ C3] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 35.244082][ C3] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) 
[ 35.244242][ C3] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 35.244401][ C3] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) 
[ 35.244599][ C3] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) 
[ 35.244798][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 35.244955][ C3] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) 
[ 35.245125][ C3] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:6053) 
[ 35.245288][ C3] __napi_poll.constprop.0 (net/core/dev.c:6703) 
[ 35.245447][ C3] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886) 
[ 35.245606][ C3] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 35.245726][ C3] ? __pfx_net_rx_action (net/core/dev.c:6850) 
[ 35.245883][ C3] ? hlock_class (kernel/locking/lockdep.c:223) 
[ 35.246044][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 35.246205][ C3] __do_softirq (kernel/softirq.c:553) 
[ 35.246367][ C3] irq_exit_rcu (kernel/softirq.c:427 kernel/softirq.c:632 kernel/softirq.c:644) 
[ 35.246487][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[   35.246646][    C3]  </IRQ>
[   35.246727][    C3]  <TASK>
[ 35.246808][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[ 35.247008][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 35.247212][ C3] Code: 10 e8 f1 92 a3 fd 48 89 ef e8 19 ff a3 fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 15 25 99 60 <74> 0e 5b 5d c3 cc cc cc cc e8 3f bb c5 fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	f1                   	int1
   3:	92                   	xchg   %eax,%edx
   4:	a3 fd 48 89 ef e8 19 	movabs %eax,0xa3ff19e8ef8948fd
   b:	ff a3 
   d:	fd                   	std
   e:	81 e3 00 02 00 00    	and    $0x200,%ebx
  14:	75 1d                	jne    0x33
  16:	9c                   	pushf
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	75 29                	jne    0x46
  1d:	48 85 db             	test   %rbx,%rbx
  20:	74 01                	je     0x23
  22:	fb                   	sti
  23:	65 ff 0d 15 25 99 60 	decl   %gs:0x60992515(%rip)        # 0x6099253f
  2a:*	74 0e                	je     0x3a		<-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	5d                   	pop    %rbp
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	e8 3f bb c5 fd       	call   0xfffffffffdc5bb77
  38:	eb dc                	jmp    0x16
  3a:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	74 0e                	je     0x10
   2:	5b                   	pop    %rbx
   3:	5d                   	pop    %rbp
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	e8 3f bb c5 fd       	call   0xfffffffffdc5bb4d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[   35.247776][    C3] RSP: 0018:ffffc900006ffc98 EFLAGS: 00000286
[   35.247977][    C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff4516bfe
[   35.248213][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9f6a8dc1
[   35.248451][    C3] RBP: ffff888001041080 R08: 0000000000000001 R09: fffffbfff4514a71
[   35.248688][    C3] R10: ffffffffa28a538f R11: 0000000000001000 R12: ffff8880063e9000
[   35.248932][    C3] R13: 0000000000000000 R14: ffffc900006ffce8 R15: ffff888007a14000
[ 35.249187][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 35.249388][ C3] qlist_free_all (mm/kasan/quarantine.c:174) 
[ 35.249559][ C3] kasan_quarantine_reduce (./include/linux/srcu.h:285 mm/kasan/quarantine.c:287) 
[ 35.249725][ C3] __kasan_slab_alloc (mm/kasan/common.c:322) 
[ 35.249886][ C3] kmem_cache_alloc (./include/linux/kasan.h:201 mm/slub.c:3813 mm/slub.c:3860 mm/slub.c:3867) 
[ 35.250047][ C3] getname_flags (fs/namei.c:140) 
[ 35.250212][ C3] vfs_fstatat (fs/stat.c:304) 
[ 35.250334][ C3] __do_sys_newfstatat (fs/stat.c:469) 
[ 35.250493][ C3] ? __pfx___do_sys_newfstatat (fs/stat.c:464) 
[ 35.250651][ C3] ? __x64_sys_openat (fs/open.c:1430) 
[ 35.250813][ C3] ? __pfx___x64_sys_openat (fs/open.c:1430) 
[ 35.250973][ C3] ? __pfx_do_faccessat (fs/open.c:463) 
[ 35.251146][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 35.251347][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.251510][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   35.251711][    C3] RIP: 0033:0x7fcae95b6eae
[ 35.251880][ C3] Code: 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 07 00 00 00 0f 1f 80 00 00 00 00 f3 0f 1e fa 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 0b 31 c0 c3 0f 1f 84 00 00 00 00 00 f7 d8 89 05
All code
========
   0:	48 89 f2             	mov    %rsi,%rdx
   3:	b9 00 01 00 00       	mov    $0x100,%ecx
   8:	48 89 fe             	mov    %rdi,%rsi
   b:	bf 9c ff ff ff       	mov    $0xffffff9c,%edi
  10:	e9 07 00 00 00       	jmp    0x1c
  15:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1c:	f3 0f 1e fa          	endbr64
  20:	41 89 ca             	mov    %ecx,%r10d
  23:	b8 06 01 00 00       	mov    $0x106,%eax
  28:	0f 05                	syscall
  2a:*	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax		<-- trapping instruction
  2f:	77 0b                	ja     0x3c
  31:	31 c0                	xor    %eax,%eax
  33:	c3                   	ret
  34:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  3b:	00 
  3c:	f7 d8                	neg    %eax
  3e:	89                   	.byte 0x89
  3f:	05                   	.byte 0x5

Code starting with the faulting instruction
===========================================
   0:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   5:	77 0b                	ja     0x12
   7:	31 c0                	xor    %eax,%eax
   9:	c3                   	ret
   a:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  11:	00 
  12:	f7 d8                	neg    %eax
  14:	89                   	.byte 0x89
  15:	05                   	.byte 0x5
[   35.252442][    C3] RSP: 002b:00007fff8a005568 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
[   35.252681][    C3] RAX: ffffffffffffffda RBX: 0000000000000012 RCX: 00007fcae95b6eae
[   35.252924][    C3] RDX: 00007fff8a005640 RSI: 00007fff8a005570 RDI: 00000000ffffff9c
[   35.253173][    C3] RBP: 00007fff8a005700 R08: 00000000ffffffff R09: 00007fff8a005570
[   35.253412][    C3] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8a005577


Finger prints:
__skb_checksum:__skb_checksum_complete:icmp_rcv:ip_protocol_deliver_rcu