====================================== | [ 126.056522][ T68] br0: port 1(swp1) entered disabled state | [ 126.518714][ C1] ------------[ cut here ]------------ | [ 126.519014][ C1] kernel BUG at net/core/skbuff.c:3505! | [ 126.519215][ C1] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 126.519658][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 126.520005][ C1] RIP: 0010:__skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 126.520172][ 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 e7 53 8d 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 e7 53 8d fe call 0xfffffffffe8d5426 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 e7 53 8d fe call 0xfffffffffe8d53fc 15: 8b .byte 0x8b [ 126.520714][ C1] RSP: 0018:ffffc900001c8210 EFLAGS: 00010202 [ 126.520908][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffff110021fb259 [ 126.521142][ C1] RDX: 0000000000000040 RSI: 0000000000000000 RDI: ffff888010fd92c8 [ 126.521373][ C1] RBP: 0000000000000000 R08: ffffc900001c82d0 R09: fffffbfff716a5a2 [ 126.521604][ C1] R10: ffffffffb8b52d17 R11: ffffffffb64fe11f R12: 0000000000000000 [ 126.521832][ C1] R13: 0000000000000000 R14: ffffc900001c82d0 R15: ffff888006d12ec8 [ 126.522071][ C1] FS: 00007fcdd6914300(0000) GS:ffff888036080000(0000) knlGS:0000000000000000 [ 126.522337][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 126.522531][ C1] CR2: 00007ffd10d73d00 CR3: 0000000007d66005 CR4: 0000000000770ef0 [ 126.522761][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 126.522989][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 126.523218][ C1] PKRU: 55555554 [ 126.523335][ C1] Call Trace: [ 126.523451][ C1] [ 126.523530][ C1] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) [ 126.523652][ C1] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) [ 126.523768][ C1] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 126.523923][ C1] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) [ 126.524077][ C1] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 126.524231][ C1] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 126.524385][ C1] ? handle_invalid_op (arch/x86/kernel/traps.c:213) [ 126.524539][ C1] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 126.524692][ C1] ? exc_invalid_op (arch/x86/kernel/traps.c:265) [ 126.524847][ C1] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 126.525002][ C1] ? napi_complete_done (./include/linux/list.h:37 ./include/net/gro.h:438 ./include/net/gro.h:433 net/core/dev.c:6184) [ 126.525158][ C1] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 126.525316][ C1] __skb_checksum_complete (net/core/skbuff.c:3643) [ 126.525473][ C1] ? __pfx___skb_checksum_complete (net/core/skbuff.c:3637) [ 126.525663][ C1] ? __pfx_csum_partial_ext (./include/net/checksum.h:120) [ 126.525818][ C1] ? __pfx_csum_block_add_ext (./include/net/checksum.h:103) [ 126.525974][ C1] icmp_rcv (./include/linux/skbuff.h:4567 net/ipv4/icmp.c:1213) [ 126.526092][ C1] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) [ 126.526248][ C1] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 126.526400][ C1] ? is_bpf_text_address (kernel/bpf/core.c:767) [ 126.526553][ C1] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 126.526708][ C1] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 126.526862][ C1] ? __netif_receive_skb_core.constprop.0 (net/core/dev.c:5498) [ 126.527055][ C1] ? ip_rcv_finish_core.constprop.0 (net/ipv4/ip_input.c:367) [ 126.527249][ 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) [ 126.527365][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 126.527520][ C1] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 126.527673][ C1] ? 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)) [ 126.527863][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 126.528016][ C1] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) [ 126.528209][ C1] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) [ 126.528400][ C1] ? br_vlan_lookup (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/rhashtable.h:673 net/bridge/br_vlan.c:34) [ 126.528556][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 126.528708][ C1] ? 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)) [ 126.528899][ C1] netif_receive_skb_internal (net/core/dev.c:5810) [ 126.529052][ C1] ? __pfx_netif_receive_skb_internal (net/core/dev.c:5789) [ 126.529244][ C1] ? 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) [ 126.529407][ C1] netif_receive_skb (net/core/dev.c:5869) [ 126.529564][ C1] br_handle_frame_finish (net/bridge/br_input.c:216) [ 126.529718][ C1] ? __pfx_br_handle_frame_finish (net/bridge/br_input.c:75) [ 126.529910][ C1] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) [ 126.530103][ C1] ? br_handle_ingress_vlan_tunnel (./include/net/dst.h:263 ./include/net/dst.h:275 net/bridge/br_vlan_tunnel.c:180) [ 126.530293][ C1] ? __pfx_br_handle_ingress_vlan_tunnel (net/bridge/br_vlan_tunnel.c:164) [ 126.530482][ C1] br_handle_frame (net/bridge/br_input.c:417) [ 126.530636][ C1] ? __pfx_br_handle_frame (net/bridge/br_input.c:321) [ 126.530791][ C1] __netif_receive_skb_core.constprop.0 (net/core/dev.c:5504) [ 126.530980][ C1] ? udp_queue_rcv_one_skb (./include/linux/skbuff.h:4449 ./include/net/udp.h:120 net/ipv4/udp.c:2106) [ 126.531134][ C1] ? udp_unicast_rcv_skb (net/ipv4/udp.c:2353 (discriminator 3)) [ 126.531289][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 126.531441][ C1] ? __pfx___netif_receive_skb_core.constprop.0 (net/core/dev.c:5397) [ 126.531631][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 126.531783][ C1] ? lock_sync (kernel/locking/lockdep.c:116 kernel/locking/lockdep.c:5794) [ 126.531942][ C1] __netif_receive_skb_list_core (net/core/dev.c:5687) [ 126.532133][ C1] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 126.532286][ C1] ? netif_receive_skb_list_internal (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5829) [ 126.532478][ C1] ? __pfx___netif_receive_skb_list_core (net/core/dev.c:5663) [ 126.532668][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 126.532820][ C1] ? netif_receive_skb_list_internal (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5829) [ 126.533011][ C1] netif_receive_skb_list_internal (net/core/dev.c:5755 net/core/dev.c:5844) [ 126.533305][ C1] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 126.533459][ C1] ? __pfx_netif_receive_skb_list_internal (net/core/dev.c:5816) [ 126.533648][ C1] ? __lock_release (kernel/locking/lockdep.c:5430) [ 126.533798][ C1] ? dev_gro_receive (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/core/gro.c:500) [ 126.534051][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 126.534205][ C1] napi_complete_done (./include/linux/list.h:37 ./include/net/gro.h:438 ./include/net/gro.h:433 net/core/dev.c:6184) [ 126.534360][ C1] ? __pfx_napi_complete_done (net/core/dev.c:6151) [ 126.534512][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 126.534765][ C1] gro_cell_poll (net/core/gro_cells.c:67) [ 126.534919][ C1] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 126.535073][ C1] __napi_poll.constprop.0 (net/core/dev.c:6703) [ 126.535226][ C1] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886) [ 126.535380][ C1] ? __pfx_net_rx_action (net/core/dev.c:6850) [ 126.535630][ C1] ? usage_skip (kernel/locking/lockdep.c:2295 kernel/locking/lockdep.c:2263) [ 126.535783][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 126.535933][ C1] ? hrtimer_interrupt (kernel/time/hrtimer.c:1828) [ 126.536090][ C1] __do_softirq (kernel/softirq.c:553) [ 126.536341][ C1] ? __dev_queue_xmit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:818 net/core/dev.c:4399) [ 126.536493][ C1] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) [ 126.536610][ C1] [ 126.536688][ C1] [ 126.536765][ C1] __local_bh_enable_ip (kernel/softirq.c:381) [ 126.537018][ C1] ? __dev_queue_xmit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:818 net/core/dev.c:4399) [ 126.537180][ C1] __dev_queue_xmit (net/core/dev.c:4400) [ 126.537335][ C1] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 126.537453][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 126.537605][ C1] ? eth_header (net/ethernet/eth.c:100) [ 126.537854][ C1] ? __pfx___dev_queue_xmit (net/core/dev.c:4281) [ 126.538009][ C1] ip_finish_output2 (./include/net/neighbour.h:542 net/ipv4/ip_output.c:235) [ 126.538162][ C1] ? __pfx_get_random_u32 (drivers/char/random.c:532) [ 126.538315][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 126.538565][ C1] ? __pfx_raw_getfrag (net/ipv4/raw.c:446) [ 126.538717][ C1] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) [ 126.538870][ C1] ? __ip_finish_output (./include/linux/skbuff.h:1624 ./include/linux/skbuff.h:4942 net/ipv4/ip_output.c:307 net/ipv4/ip_output.c:295) [ 126.539025][ C1] ip_output (./include/linux/netfilter.h:303 net/ipv4/ip_output.c:433) [ 126.539140][ C1] ? __ip_local_out (net/ipv4/ip_output.c:96 net/ipv4/ip_output.c:107) [ 126.539400][ C1] ? __pfx_ip_output (net/ipv4/ip_output.c:427) [ 126.539551][ C1] ? __ip_make_skb (net/ipv4/ip_output.c:1379 net/ipv4/ip_output.c:1487) [ 126.539704][ C1] ? __pfx_raw_getfrag (net/ipv4/raw.c:446) [ 126.539856][ C1] ? ip_append_data (net/ipv4/ip_output.c:1368 net/ipv4/ip_output.c:1347) [ 126.540107][ C1] ip_push_pending_frames (./include/net/dst.h:450 net/ipv4/ip_output.c:129 net/ipv4/ip_output.c:1496 net/ipv4/ip_output.c:1516) [ 126.540259][ C1] raw_sendmsg (net/ipv4/raw.c:648) [ 126.540412][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 126.540565][ C1] ? __pfx_raw_sendmsg (net/ipv4/raw.c:476) [ 126.540813][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 126.540968][ C1] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 126.541120][ C1] ? __lock_release (kernel/locking/lockdep.c:5430) [ 126.541272][ C1] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 126.541521][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 126.541672][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 126.541825][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 126.541978][ C1] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 126.542129][ C1] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 126.542381][ C1] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 126.542534][ C1] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 126.542686][ C1] ? __pfx___sys_sendto (net/socket.c:2161) [ 126.542838][ C1] ? do_user_addr_fault (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 ./include/linux/mm.h:686 arch/x86/mm/fault.c:1357) [ 126.542991][ C1] ? reacquire_held_locks (kernel/locking/lockdep.c:5279) [ 126.543145][ C1] ? __lock_release (kernel/locking/lockdep.c:5430) [ 126.543297][ C1] ? do_user_addr_fault (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/mm.h:688 arch/x86/mm/fault.c:1357) [ 126.543452][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 126.543700][ C1] ? __up_read (./arch/x86/include/asm/atomic64_64.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2735 ./include/linux/atomic/atomic-long.h:184 ./include/linux/atomic/atomic-instrumented.h:3289 kernel/locking/rwsem.c:1347) [ 126.543855][ C1] ? __pfx___up_read (kernel/locking/rwsem.c:1339) [ 126.544009][ C1] ? do_user_addr_fault (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/mm.h:688 arch/x86/mm/fault.c:1357) [ 126.544163][ C1] __x64_sys_sendto (net/socket.c:2199) [ 126.544509][ C1] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 126.544698][ C1] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 126.544856][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 126.545045][ C1] RIP: 0033:0x7fcdd6bea85a [ 126.545307][ C1] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89 All code ======== 0: d8 64 89 02 fsubs 0x2(%rcx,%rcx,4) 4: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax b: eb b8 jmp 0xffffffffffffffc5 d: 0f 1f 00 nopl (%rax) 10: f3 0f 1e fa endbr64 14: 41 89 ca mov %ecx,%r10d 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 15 jne 0x38 23: b8 2c 00 00 00 mov $0x2c,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 7e ja 0xb0 32: c3 ret 33: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 38: 41 54 push %r12 3a: 48 83 ec 30 sub $0x30,%rsp 3e: 44 rex.R 3f: 89 .byte 0x89 Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 7e ja 0x86 8: c3 ret 9: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) e: 41 54 push %r12 10: 48 83 ec 30 sub $0x30,%rsp 14: 44 rex.R 15: 89 .byte 0x89 [ 126.545844][ C1] RSP: 002b:00007ffd10d74718 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 126.546176][ C1] RAX: ffffffffffffffda RBX: 0000000000000038 RCX: 00007fcdd6bea85a [ 126.546408][ C1] RDX: 0000000000000040 RSI: 0000000000f0e340 RDI: 0000000000000005 [ 126.546636][ C1] RBP: 00007ffd10d74770 R08: 00000000004185e0 R09: 0000000000000010 [ 126.546965][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000054 Finger prints: __skb_checksum:__skb_checksum_complete:icmp_rcv:ip_protocol_deliver_rcu