====================================== | [ 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