====================================== | [ 36.560320][ T341] br2: port 2(veth2.20) entered forwarding state | [ 38.267180][ C0] ------------[ cut here ]------------ | [ 38.267691][ C0] kernel BUG at net/core/skbuff.c:3505! | [ 38.267925][ C0] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 38.268391][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 38.268761][ C0] RIP: 0010:__skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 38.268942][ C0] 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 [ 38.269534][ C0] RSP: 0000:ffffc90000007910 EFLAGS: 00010202 [ 38.269733][ C0] RAX: 00000000000084bf RBX: 0000000000000008 RCX: 1ffff11000fef509 [ 38.270011][ C0] RDX: 00000000000000ba RSI: dffffc0000000000 RDI: ffff888007f7a848 [ 38.270257][ C0] RBP: 00000000000084bf R08: 0000000000000008 R09: fffffbfff281c5ea [ 38.270501][ C0] R10: ffffffff940e2f57 R11: dffffc0000000000 R12: 0000000000000008 [ 38.270746][ C0] R13: 0000000000000000 R14: ffffc900000079d0 R15: ffff888007831408 [ 38.270995][ C0] FS: 0000000000000000(0000) GS:ffff888036000000(0000) knlGS:0000000000000000 [ 38.271291][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.271498][ C0] CR2: 00007f3575a09680 CR3: 000000002471e003 CR4: 0000000000770ef0 [ 38.271748][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.271999][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.272265][ C0] PKRU: 55555554 [ 38.272399][ C0] Call Trace: [ 38.272523][ C0] [ 38.272609][ C0] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) [ 38.272737][ C0] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) [ 38.272866][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 38.273031][ C0] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) [ 38.273200][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 38.273362][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 38.273531][ C0] ? handle_invalid_op (arch/x86/kernel/traps.c:213) [ 38.273695][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 38.273858][ C0] ? exc_invalid_op (arch/x86/kernel/traps.c:265) [ 38.274029][ C0] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 38.274204][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 38.274370][ C0] __skb_checksum_complete (net/core/skbuff.c:3643) [ 38.274536][ C0] ? __pfx___skb_checksum_complete (net/core/skbuff.c:3637) [ 38.274741][ C0] ? __pfx_csum_partial_ext (./include/net/checksum.h:120) [ 38.274911][ C0] ? __pfx_csum_block_add_ext (./include/net/checksum.h:103) [ 38.275074][ C0] icmp_rcv (./include/linux/skbuff.h:4567 net/ipv4/icmp.c:1213) [ 38.275200][ C0] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) [ 38.275363][ C0] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 38.275527][ C0] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 38.275690][ C0] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 38.275854][ C0] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1136 ./include/linux/skbuff.h:1188 net/ipv4/ip_input.c:390) [ 38.276057][ C0] 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) [ 38.276180][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 38.276351][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 38.276513][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 38.276680][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 38.276841][ C0] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) [ 38.277045][ C0] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) [ 38.277248][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 38.277411][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 38.277572][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 38.277738][ C0] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:6053) [ 38.277904][ C0] __napi_poll.constprop.0 (net/core/dev.c:6703) [ 38.278066][ C0] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886) [ 38.278233][ C0] ? __pfx_net_rx_action (net/core/dev.c:6850) [ 38.278396][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) [ 38.278607][ C0] ? note_gp_changes (kernel/rcu/tree.c:1283 (discriminator 31)) [ 38.278771][ C0] __do_softirq (kernel/softirq.c:553) [ 38.278935][ C0] irq_exit_rcu (kernel/softirq.c:427 kernel/softirq.c:632 kernel/softirq.c:644) [ 38.279061][ C0] sysvec_call_function_single (arch/x86/kernel/smp.c:262 (discriminator 14)) [ 38.279224][ C0] [ 38.279306][ C0] [ 38.279389][ C0] asm_sysvec_call_function_single (./arch/x86/include/asm/idtentry.h:656) [ 38.279597][ C0] RIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:72 arch/x86/kernel/process.c:743) [ 38.279773][ C0] 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 [ 38.280367][ C0] RSP: 0000:ffffffff93407df8 EFLAGS: 00000246 [ 38.280581][ C0] RAX: 000000000009d39f RBX: 1ffffffff2680fc1 RCX: ffffffff92476802 [ 38.280830][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8fe97aa6 [ 38.281082][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c06e64 [ 38.281330][ C0] R10: ffff888036037323 R11: 1ffff110003a610c R12: 0000000000000000 [ 38.281577][ C0] R13: ffffffff9341ce00 R14: dffffc0000000000 R15: 0000000000014770 [ 38.281824][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:147) [ 38.282014][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:171) [ 38.282182][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:98) [ 38.282363][ C0] cpuidle_idle_call (kernel/sched/idle.c:171) [ 38.282526][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:147) [ 38.282701][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) [ 38.282866][ C0] do_idle (kernel/sched/idle.c:312) [ 38.282991][ C0] cpu_startup_entry (kernel/sched/idle.c:409 (discriminator 1)) [ 38.283165][ C0] rest_init (./include/linux/rcupdate.h:751 init/main.c:701) [ 38.283289][ C0] ? acpi_enable_subsystem (drivers/acpi/acpica/utxfinit.c:134) [ 38.283560][ C0] arch_call_rest_init+0x13/0x40 [ 38.283724][ C0] start_kernel (init/main.c:1023 (discriminator 1)) [ 38.284008][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:543) [ 38.284174][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:485 (discriminator 17)) Finger prints: __skb_checksum:__skb_checksum_complete:icmp_rcv:ip_protocol_deliver_rcu