====================================== | [ 41.118589][ T357] br1: port 1(lag) entered forwarding state | [ 41.920220][ C2] ------------[ cut here ]------------ | [ 41.920553][ C2] kernel BUG at net/core/skbuff.c:3505! | [ 41.920751][ C2] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 41.921219][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 41.921596][ C2] Workqueue: mld mld_ifc_work [ 41.921775][ C2] RIP: 0010:__skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 41.921953][ C2] 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 [ 41.922569][ C2] RSP: 0018:ffffc90000220468 EFLAGS: 00010206 [ 41.922827][ C2] RAX: 000000000000b99a RBX: 0000000000000008 RCX: 1ffff11000a0e9c9 [ 41.923070][ C2] RDX: 000000000000009a RSI: dffffc0000000000 RDI: ffff888005074e48 [ 41.923320][ C2] RBP: 000000000000b99a R08: 0000000000000008 R09: fffffbfff105c5ea [ 41.923560][ C2] R10: ffffffff882e2f57 R11: ffffffff85ebf694 R12: 0000000000000008 [ 41.923803][ C2] R13: 0000000000000000 R14: ffffc90000220528 R15: ffff888005cf5248 [ 41.924047][ C2] FS: 0000000000000000(0000) GS:ffff888036100000(0000) knlGS:0000000000000000 [ 41.924326][ C2] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.924536][ C2] CR2: 00007f53ffe60000 CR3: 000000001411e006 CR4: 0000000000770ef0 [ 41.924781][ C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.925024][ C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.925275][ C2] PKRU: 55555554 [ 41.925403][ C2] Call Trace: [ 41.925527][ C2] [ 41.925609][ C2] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) [ 41.925755][ C2] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) [ 41.925884][ C2] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 41.926060][ C2] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) [ 41.926223][ C2] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 41.926387][ C2] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 41.926553][ C2] ? handle_invalid_op (arch/x86/kernel/traps.c:213) [ 41.926714][ C2] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 41.926873][ C2] ? exc_invalid_op (arch/x86/kernel/traps.c:265) [ 41.927034][ C2] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 41.927221][ C2] ? dst_init (net/core/dst.c:53) [ 41.927346][ C2] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 41.927547][ C2] ? __skb_checksum (net/core/skbuff.c:3441 (discriminator 4)) [ 41.927712][ C2] __skb_checksum_complete (net/core/skbuff.c:3643) [ 41.927898][ C2] ? __pfx___skb_checksum_complete (net/core/skbuff.c:3637) [ 41.928105][ C2] ? __pfx_csum_partial_ext (./include/net/checksum.h:120) [ 41.928278][ C2] ? __pfx_csum_block_add_ext (./include/net/checksum.h:103) [ 41.928436][ C2] icmp_rcv (./include/linux/skbuff.h:4567 net/ipv4/icmp.c:1213) [ 41.928579][ C2] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) [ 41.928740][ C2] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 41.928900][ C2] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 41.929062][ C2] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 41.929222][ C2] ? ip_rcv_finish_core.constprop.0 (net/ipv4/ip_input.c:367) [ 41.929423][ C2] 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) [ 41.929549][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 41.929716][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 41.929875][ C2] ? netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5797 (discriminator 16)) [ 41.930078][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 41.930236][ C2] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) [ 41.930442][ C2] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) [ 41.930649][ C2] ? br_vlan_lookup (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/rhashtable.h:673 net/bridge/br_vlan.c:34) bridge [ 41.930883][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 41.931040][ C2] ? netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5797 (discriminator 16)) [ 41.931250][ C2] netif_receive_skb_internal (net/core/dev.c:5810) [ 41.931406][ C2] ? __pfx_netif_receive_skb_internal (net/core/dev.c:5789) [ 41.931605][ C2] ? br_handle_vlan (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 net/bridge/br_private.h:754 net/bridge/br_vlan.c:505) bridge [ 41.931824][ C2] netif_receive_skb (net/core/dev.c:5869) [ 41.932002][ C2] br_handle_frame_finish (net/bridge/br_input.c:216) bridge [ 41.932229][ C2] ? gre_rcv (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/ipv4/gre_demux.c:164) gre [ 41.932410][ C2] ? __pfx_br_handle_frame_finish (net/bridge/br_input.c:75) bridge [ 41.932661][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 41.932831][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 41.932991][ C2] ? gre_rcv (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/ipv4/gre_demux.c:164) gre [ 41.933170][ C2] ? gre_rcv (net/ipv4/gre_demux.c:172) gre [ 41.933332][ C2] ? __pfx_nf_ingress (net/core/dev.c:5380) [ 41.933514][ C2] ? ip_local_deliver_finish (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/ipv4/ip_input.c:234) [ 41.933690][ C2] br_handle_frame (net/bridge/br_input.c:417) bridge [ 41.933882][ C2] ? __pfx_br_handle_frame (net/bridge/br_input.c:321) bridge [ 41.934126][ C2] __netif_receive_skb_core.constprop.0 (net/core/dev.c:5504) [ 41.934343][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 41.934464][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 41.934626][ C2] ? __pfx___netif_receive_skb_core.constprop.0 (net/core/dev.c:5397) [ 41.934827][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 41.934985][ C2] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 41.935147][ C2] __netif_receive_skb_one_core (net/core/dev.c:5609) [ 41.935345][ C2] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) [ 41.935546][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 41.935704][ C2] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 41.935864][ C2] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:6053) [ 41.936024][ C2] __napi_poll.constprop.0 (net/core/dev.c:6703) [ 41.936184][ C2] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886) [ 41.936346][ C2] ? __pfx_net_rx_action (net/core/dev.c:6850) [ 41.936506][ C2] ? hlock_class (kernel/locking/lockdep.c:223) [ 41.936667][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 41.936827][ C2] __do_softirq (kernel/softirq.c:553) [ 41.936992][ C2] ? __dev_queue_xmit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:818 net/core/dev.c:4399) [ 41.937148][ C2] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) [ 41.937269][ C2] [ 41.937353][ C2] [ 41.937433][ C2] __local_bh_enable_ip (kernel/softirq.c:381) [ 41.937595][ C2] ? __dev_queue_xmit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:818 net/core/dev.c:4399) [ 41.937753][ C2] __dev_queue_xmit (net/core/dev.c:4400) [ 41.937909][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 41.938065][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 41.938292][ C2] ? __pfx___dev_queue_xmit (net/core/dev.c:4281) [ 41.938449][ C2] ? neigh_hh_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:772 ./include/net/neighbour.h:496) [ 41.938634][ C2] ip6_finish_output2 (./include/net/neighbour.h:540 net/ipv6/ip6_output.c:137) [ 41.938823][ C2] ip6_finish_output (net/ipv6/ip6_output.c:211 net/ipv6/ip6_output.c:222) [ 41.938981][ C2] ip6_output (./include/linux/netfilter.h:303 net/ipv6/ip6_output.c:243) [ 41.939103][ C2] ? __pfx_ip6_output (net/ipv6/ip6_output.c:230) [ 41.939260][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 41.939416][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 41.939579][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 41.939753][ C2] ? icmp6_dst_alloc (net/ipv6/route.c:3293) [ 41.939913][ C2] NF_HOOK.constprop.0 (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 ./include/linux/netfilter.h:238 ./include/linux/netfilter.h:312) [ 41.940076][ C2] ? __pfx_NF_HOOK.constprop.0 (./include/linux/netfilter.h:308) [ 41.940234][ C2] ? __pfx_xfrm_lookup_with_ifid (net/xfrm/xfrm_policy.c:3133) [ 41.940449][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 41.940645][ C2] ? icmp6_dst_alloc (net/ipv6/route.c:3293) [ 41.940818][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:77 kernel/softirq.c:386) [ 41.940979][ C2] mld_sendpack (net/ipv6/mcast.c:1822) [ 41.941139][ C2] ? __pfx_mld_sendpack (net/ipv6/mcast.c:1779) [ 41.941327][ C2] ? mld_send_cr (net/ipv6/mcast.c:2096 (discriminator 11)) [ 41.941492][ C2] mld_ifc_work (net/ipv6/mcast.c:2652) [ 41.941650][ C2] process_one_work (kernel/workqueue.c:2633) [ 41.941840][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 41.941999][ C2] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 41.942159][ C2] ? assign_work (kernel/workqueue.c:1101) [ 41.942336][ C2] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 41.942493][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 41.942699][ C2] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 41.942863][ C2] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 41.943019][ C2] kthread (kernel/kthread.c:388) [ 41.943136][ C2] ? __pfx_kthread (kernel/kthread.c:341) [ 41.943313][ C2] ret_from_fork (arch/x86/kernel/process.c:147) [ 41.943473][ C2] ? __pfx_kthread (kernel/kthread.c:341) Finger prints: __skb_checksum:__skb_checksum_complete:icmp_rcv:ip_protocol_deliver_rcu