======================================
| [ 41.985431][ T8] br1: port 4(veth2) entered forwarding state
| [ 44.580384][ C1] ------------[ cut here ]------------
| [ 44.580726][ C1] kernel BUG at net/core/skbuff.c:3505!
| [ 44.580972][ C1] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
[ 44.581487][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 44.581898][ C1] RIP: 0010:__skb_checksum (net/core/skbuff.c:3505 (discriminator 1))
[ 44.582101][ C1] 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
[ 44.582768][ C1] RSP: 0018:ffffc900001c8910 EFLAGS: 00010206
[ 44.583001][ C1] RAX: 0000000000008abe RBX: 0000000000000008 RCX: 1ffff11000f5d439
[ 44.583292][ C1] RDX: 00000000000000a6 RSI: dffffc0000000000 RDI: ffff888007aea1c8
[ 44.583554][ C1] RBP: 0000000000008abe R08: 0000000000000008 R09: fffffbfff78dc5ea
[ 44.583804][ C1] R10: ffffffffbc6e2f57 R11: dffffc0000000000 R12: 0000000000000008
[ 44.584051][ C1] R13: 0000000000000000 R14: ffffc900001c89d0 R15: ffff888007fbfcc8
[ 44.584314][ C1] FS: 0000000000000000(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[ 44.584639][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 44.584869][ C1] CR2: 00007f56dd7e3270 CR3: 000000003271e004 CR4: 0000000000770ef0
[ 44.585117][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 44.585390][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 44.585676][ C1] PKRU: 55555554
[ 44.585837][ C1] Call Trace:
[ 44.585963][ C1]
[ 44.586079][ C1] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447)
[ 44.586222][ C1] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154)
[ 44.586363][ C1] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1))
[ 44.586575][ C1] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175)
[ 44.586744][ C1] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1))
[ 44.586926][ C1] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1))
[ 44.587106][ C1] ? handle_invalid_op (arch/x86/kernel/traps.c:213)
[ 44.587269][ C1] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1))
[ 44.587466][ C1] ? exc_invalid_op (arch/x86/kernel/traps.c:265)
[ 44.587627][ C1] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568)
[ 44.587838][ C1] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1))
[ 44.588017][ C1] __skb_checksum_complete (net/core/skbuff.c:3643)
[ 44.588188][ C1] ? __pfx___skb_checksum_complete (net/core/skbuff.c:3637)
[ 44.588426][ C1] ? __pfx_csum_partial_ext (./include/net/checksum.h:120)
[ 44.588613][ C1] ? __pfx_csum_block_add_ext (./include/net/checksum.h:103)
[ 44.588796][ C1] icmp_rcv (./include/linux/skbuff.h:4567 net/ipv4/icmp.c:1213)
[ 44.588950][ C1] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5))
[ 44.589115][ C1] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234)
[ 44.589441][ C1] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254)
[ 44.589605][ C1] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243)
[ 44.589810][ C1] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1136 ./include/linux/skbuff.h:1188 net/ipv4/ip_input.c:390)
[ 44.590019][ C1] 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)
[ 44.590255][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562)
[ 44.590451][ C1] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756)
[ 44.590640][ C1] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051)
[ 44.590809][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562)
[ 44.591093][ C1] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4))
[ 44.591329][ C1] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603)
[ 44.591543][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114)
[ 44.591731][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725)
[ 44.592004][ C1] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051)
[ 44.592179][ C1] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:6053)
[ 44.592350][ C1] __napi_poll.constprop.0 (net/core/dev.c:6703)
[ 44.592508][ C1] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886)
[ 44.592771][ C1] ? __pfx_net_rx_action (net/core/dev.c:6850)
[ 44.592935][ C1] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359)
[ 44.593138][ C1] ? note_gp_changes (kernel/rcu/tree.c:1283 (discriminator 31))
[ 44.593299][ C1] __do_softirq (kernel/softirq.c:553)
[ 44.593465][ C1] irq_exit_rcu (kernel/softirq.c:427 kernel/softirq.c:632 kernel/softirq.c:644)
[ 44.593584][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14))
[ 44.593744][ C1]
[ 44.593829][ C1]
[ 44.593910][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649)
[ 44.594109][ C1] RIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:72 arch/x86/kernel/process.c:743)
[ 44.594278][ C1] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 73 a4 3e 00 fb f4 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
All code
========
0: 4c 01 c7 add %r8,%rdi
3: 4c 29 c2 sub %r8,%rdx
6: e9 72 ff ff ff jmp 0xffffffffffffff7d
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 90 nop
19: 90 nop
1a: 90 nop
1b: f3 0f 1e fa endbr64
1f: 66 90 xchg %ax,%ax
21: 0f 00 2d 73 a4 3e 00 verw 0x3ea473(%rip) # 0x3ea49b
28: fb sti
29: f4 hlt
2a:* fa cli <-- trapping instruction
2b: c3 ret
2c: cc int3
2d: cc int3
2e: cc int3
2f: cc int3
30: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1)
37: 00 00 00 00
3b: 90 nop
3c: 90 nop
3d: 90 nop
3e: 90 nop
3f: 90 nop
Code starting with the faulting instruction
===========================================
0: fa cli
1: c3 ret
2: cc int3
3: cc int3
4: cc int3
5: cc int3
6: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1)
d: 00 00 00 00
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: 90 nop
[ 44.594937][ C1] RSP: 0018:ffffc9000013fdf8 EFLAGS: 00000246
[ 44.595137][ C1] RAX: 000000000008f255 RBX: 1ffff92000027fc1 RCX: ffffffffbaa76802
[ 44.595375][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb8497aa6
[ 44.595718][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c16e64
[ 44.595959][ C1] R10: ffff8880360b7323 R11: ffff8880360bbec0 R12: 0000000000000000
[ 44.596204][ C1] R13: ffff888001b60040 R14: dffffc0000000000 R15: 0000000000000000
[ 44.596453][ C1] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:147)
[ 44.596620][ C1] ? cpuidle_idle_call (kernel/sched/idle.c:171)
[ 44.596822][ C1] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:98)
[ 44.596986][ C1] cpuidle_idle_call (kernel/sched/idle.c:171)
[ 44.597166][ C1] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:147)
[ 44.597328][ C1] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59)
[ 44.597509][ C1] do_idle (kernel/sched/idle.c:312)
[ 44.597631][ C1] cpu_startup_entry (kernel/sched/idle.c:409 (discriminator 1))
[ 44.597812][ C1] start_secondary (arch/x86/kernel/smpboot.c:224 arch/x86/kernel/smpboot.c:304)
[ 44.598061][ C1] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:254)
Finger prints:
__skb_checksum:__skb_checksum_complete:icmp_rcv:ip_protocol_deliver_rcu