====================================== | [ 36.821360][ T49] br1: port 3(veth2) entered forwarding state | [ 39.204492][ C0] ------------[ cut here ]------------ | [ 39.204820][ C0] kernel BUG at net/core/skbuff.c:3505! | [ 39.205189][ C0] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 39.205651][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 39.206027][ C0] RIP: 0010:__skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 39.206204][ 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 [ 39.206791][ C0] RSP: 0018:ffffc90000007910 EFLAGS: 00010206 [ 39.207006][ C0] RAX: 0000000000007f2b RBX: 0000000000000008 RCX: 1ffff11000a794a1 [ 39.207252][ C0] RDX: 000000000000007e RSI: dffffc0000000000 RDI: ffff8880053ca508 [ 39.207497][ C0] RBP: 0000000000007f2b R08: 0000000000000008 R09: fffffbfff105c5ea [ 39.207745][ C0] R10: ffffffff882e2f57 R11: dffffc0000000000 R12: 0000000000000008 [ 39.207991][ C0] R13: 0000000000000000 R14: ffffc900000079d0 R15: ffff888001d6b5c8 [ 39.208246][ C0] FS: 0000000000000000(0000) GS:ffff888036000000(0000) knlGS:0000000000000000 [ 39.208535][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.208745][ C0] CR2: 00007f90e7a0e270 CR3: 0000000009008006 CR4: 0000000000770ef0 [ 39.209000][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.209249][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.209508][ C0] PKRU: 55555554 [ 39.209634][ C0] Call Trace: [ 39.209759][ C0] [ 39.209845][ C0] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) [ 39.209978][ C0] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) [ 39.210108][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 39.210278][ C0] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) [ 39.210449][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 39.210615][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 39.210791][ C0] ? handle_invalid_op (arch/x86/kernel/traps.c:213) [ 39.210959][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 39.211124][ C0] ? exc_invalid_op (arch/x86/kernel/traps.c:265) [ 39.211294][ C0] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 39.211468][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 39.211639][ C0] __skb_checksum_complete (net/core/skbuff.c:3643) [ 39.211806][ C0] ? __pfx___skb_checksum_complete (net/core/skbuff.c:3637) [ 39.212018][ C0] ? __pfx_csum_partial_ext (./include/net/checksum.h:120) [ 39.212182][ C0] ? __pfx_csum_block_add_ext (./include/net/checksum.h:103) [ 39.212352][ C0] icmp_rcv (./include/linux/skbuff.h:4567 net/ipv4/icmp.c:1213) [ 39.212481][ C0] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) [ 39.212649][ C0] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 39.212829][ C0] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 39.213002][ C0] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 39.213170][ C0] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1136 ./include/linux/skbuff.h:1188 net/ipv4/ip_input.c:390) [ 39.213383][ 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) [ 39.213511][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 39.213678][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 39.213844][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 39.214009][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 39.214178][ C0] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) [ 39.214389][ C0] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) [ 39.214600][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 39.214760][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 39.214939][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 39.215107][ C0] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:6053) [ 39.215275][ C0] __napi_poll.constprop.0 (net/core/dev.c:6703) [ 39.215440][ C0] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886) [ 39.215611][ C0] ? __pfx_net_rx_action (net/core/dev.c:6850) [ 39.215777][ C0] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 39.215950][ C0] ? ktime_get (./include/linux/seqlock.h:72 kernel/time/timekeeping.c:846) [ 39.216077][ C0] ? hrtimer_interrupt (kernel/time/hrtimer.c:1828) [ 39.216345][ C0] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) [ 39.216553][ C0] __do_softirq (kernel/softirq.c:553) [ 39.216725][ C0] irq_exit_rcu (kernel/softirq.c:427 kernel/softirq.c:632 kernel/softirq.c:644) [ 39.216958][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) [ 39.217133][ C0] [ 39.217218][ C0] [ 39.217300][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) [ 39.217611][ 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) [ 39.217788][ 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 [ 39.218603][ C0] RSP: 0018:ffffffff87607df8 EFLAGS: 00000246 [ 39.218816][ C0] RAX: 00000000000a834b RBX: 1ffffffff0ec0fc1 RCX: ffffffff86676802 [ 39.219064][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84097aa6 [ 39.219423][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c06e64 [ 39.219677][ C0] R10: ffff888036037323 R11: ffff88803603bec0 R12: 0000000000000000 [ 39.219932][ C0] R13: ffffffff8761ce00 R14: dffffc0000000000 R15: 0000000000014770 [ 39.220293][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:147) [ 39.220462][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:171) [ 39.220638][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:98) [ 39.220804][ C0] cpuidle_idle_call (kernel/sched/idle.c:171) [ 39.221070][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:147) [ 39.221241][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) [ 39.221409][ C0] do_idle (kernel/sched/idle.c:312) [ 39.221532][ C0] cpu_startup_entry (kernel/sched/idle.c:409 (discriminator 1)) [ 39.221699][ C0] rest_init (./include/linux/rcupdate.h:751 init/main.c:701) [ 39.221921][ C0] ? acpi_enable_subsystem (drivers/acpi/acpica/utxfinit.c:134) [ 39.222087][ C0] arch_call_rest_init+0x13/0x40 [ 39.222252][ C0] start_kernel (init/main.c:1023 (discriminator 1)) [ 39.222414][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:543) [ 39.222682][ 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