I am still seeing this issue with Linux ___ 4.4.0-93-generic #116-Ubuntu SMP Fri Aug 11 21:17:51 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
[214343.266228] ------------[ cut here ]------------ [214343.266235] WARNING: CPU: 1 PID: 10743 at /build/linux-YyUNAI/linux-4.4.0/net/core/dev.c:2445 skb_warn_bad_offload+0xd1/0x120() [214343.266239] tg3: caps=(0x00000004000001b2, 0x0000000000000000) len=1444 data_len=1402 gso_size=1376 gso_type=2 ip_summed=0 [214343.266241] Modules linked in: nf_conntrack_netlink nfnetlink binfmt_misc rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs lockd grace fscache veth ipt_MASQUERADE nf_nat_masquerade_ipv4 xfrm_user xfrm_algo xt_addrtype iptable_filter xt_conntrack br_netfilter bridge stp llc aufs xt_nat xt_tcpudp iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables hp_wmi gpio_ich sparse_keymap ppdev intel_powerclamp coretemp kvm_intel snd_hda_codec_realtek kvm snd_hda_codec_generic snd_hda_intel irqbypass snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer pl2303 snd usbserial soundcore input_leds serio_raw lpc_ich i7core_edac shpchp edac_core 8250_fintek parport_pc tpm_infineon parport mac_hid ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi [214343.266302] scsi_transport_iscsi sunrpc autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid hid nouveau crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel mxm_wmi video aes_x86_64 i2c_algo_bit lrw ttm gf128mul glue_helper ablk_helper drm_kms_helper syscopyarea cryptd firewire_ohci sysfillrect tg3 psmouse sysimgblt fb_sys_fops firewire_core ahci ptp libahci drm crc_itu_t pps_core wmi floppy fjes [214343.266347] CPU: 1 PID: 10743 Comm: transmission-da Tainted: G W I 4.4.0-93-generic #116-Ubuntu [214343.266349] Hardware name: Hewlett-Packard HP Z600 Workstation/0B54h, BIOS 786G4 v03.13 10/13/2010 [214343.266351] 0000000000000286 4281c02c793d7594 ffff880313a434c8 ffffffff813f9f83 [214343.266355] ffff880313a43510 ffffffff81d6f780 ffff880313a43500 ffffffff810812f2 [214343.266358] ffff88030f710300 ffff8803114c0000 0000000000000002 ffff880310cbd6ac [214343.266361] Call Trace: [214343.266363] <IRQ> [<ffffffff813f9f83>] dump_stack+0x63/0x90 [214343.266373] [<ffffffff810812f2>] warn_slowpath_common+0x82/0xc0 [214343.266376] [<ffffffff8108138c>] warn_slowpath_fmt+0x5c/0x80 [214343.266381] [<ffffffff814000a2>] ? ___ratelimit+0xa2/0xe0 [214343.266385] [<ffffffff81735cd1>] skb_warn_bad_offload+0xd1/0x120 [214343.266388] [<ffffffff817393dd>] __skb_gso_segment+0xfd/0x110 [214343.266391] [<ffffffff8173971d>] validate_xmit_skb.isra.97.part.98+0x10d/0x2b0 [214343.266394] [<ffffffff817398fb>] validate_xmit_skb_list+0x3b/0x60 [214343.266399] [<ffffffff8175efca>] sch_direct_xmit+0x16a/0x220 [214343.266402] [<ffffffff8173a00d>] __dev_queue_xmit+0x23d/0x590 [214343.266405] [<ffffffff8173a370>] dev_queue_xmit+0x10/0x20 [214343.266410] [<ffffffff817436e8>] neigh_resolve_output+0x118/0x1c0 [214343.266415] [<ffffffff81779d76>] ip_finish_output2+0x146/0x380 [214343.266420] [<ffffffffc081e23d>] ? ipv4_confirm+0x7d/0x100 [nf_conntrack_ipv4] [214343.266424] [<ffffffff8177ad96>] ip_finish_output+0x136/0x1f0 [214343.266428] [<ffffffff8176e3a3>] ? nf_hook_slow+0x73/0xd0 [214343.266431] [<ffffffff8177b79e>] ip_output+0x6e/0xe0 [214343.266435] [<ffffffff8177ac60>] ? __ip_flush_pending_frames.isra.41+0x90/0x90 [214343.266438] [<ffffffff81777363>] ip_forward_finish+0x43/0x70 [214343.266441] [<ffffffff81777729>] ip_forward+0x399/0x480 [214343.266444] [<ffffffff81777320>] ? ip_frag_mem+0x50/0x50 [214343.266447] [<ffffffff817753b2>] ip_rcv_finish+0x92/0x320 [214343.266450] [<ffffffff81775ce1>] ip_rcv+0x291/0x3a0 [214343.266453] [<ffffffff81775320>] ? inet_del_offload+0x40/0x40 [214343.266456] [<ffffffff81737844>] __netif_receive_skb_core+0x704/0xa60 [214343.266467] [<ffffffffc08049a0>] ? nf_conntrack_tuple_taken+0x1b0/0x1d0 [nf_conntrack] [214343.266474] [<ffffffffc0703b07>] ? get_unique_tuple+0x147/0x630 [nf_nat] [214343.266476] [<ffffffff81737bb8>] __netif_receive_skb+0x18/0x60 [214343.266479] [<ffffffff81737c32>] netif_receive_skb_internal+0x32/0xa0 [214343.266482] [<ffffffff81737cbc>] netif_receive_skb+0x1c/0x70 [214343.266491] [<ffffffffc086b404>] br_netif_receive_skb+0x34/0x50 [bridge] [214343.266498] [<ffffffffc086b77b>] br_handle_frame_finish+0x2bb/0x620 [bridge] [214343.266505] [<ffffffffc08039bb>] ? __nf_ct_refresh_acct+0xab/0xc0 [nf_conntrack] [214343.266513] [<ffffffffc086b4c0>] ? br_handle_local_finish+0xa0/0xa0 [bridge] [214343.266520] [<ffffffffc086b4c0>] ? br_handle_local_finish+0xa0/0xa0 [bridge] [214343.266524] [<ffffffffc08912d7>] NF_HOOK_THRESH+0x57/0xb0 [br_netfilter] [214343.266531] [<ffffffffc086b4c0>] ? br_handle_local_finish+0xa0/0xa0 [bridge] [214343.266535] [<ffffffffc08921c9>] br_nf_pre_routing_finish+0x1a9/0x350 [br_netfilter] [214343.266542] [<ffffffffc086b4c0>] ? br_handle_local_finish+0xa0/0xa0 [bridge] [214343.266545] [<ffffffff8176e312>] ? nf_iterate+0x62/0x80 [214343.266549] [<ffffffffc0892f61>] br_nf_pre_routing+0x2e1/0x440 [br_netfilter] [214343.266553] [<ffffffffc0892020>] ? br_nf_forward_ip+0x480/0x480 [br_netfilter] [214343.266556] [<ffffffff8176e312>] nf_iterate+0x62/0x80 [214343.266560] [<ffffffff8176e3a3>] nf_hook_slow+0x73/0xd0 [214343.266567] [<ffffffffc086bcba>] br_handle_frame+0x1da/0x2b0 [bridge] [214343.266573] [<ffffffff810b3b07>] ? can_migrate_task+0x287/0x2b0 [214343.266580] [<ffffffffc086b4c0>] ? br_handle_local_finish+0xa0/0xa0 [bridge] [214343.266583] [<ffffffff817374a4>] __netif_receive_skb_core+0x364/0xa60 [214343.266586] [<ffffffff810b1d4f>] ? sched_clock_cpu+0x8f/0xa0 [214343.266590] [<ffffffff810ab614>] ? check_preempt_curr+0x54/0x90 [214343.266592] [<ffffffff810ab669>] ? ttwu_do_wakeup+0x19/0xe0 [214343.266595] [<ffffffff81737bb8>] __netif_receive_skb+0x18/0x60 [214343.266598] [<ffffffff817389a8>] process_backlog+0xa8/0x150 [214343.266601] [<ffffffff817380fe>] net_rx_action+0x21e/0x360 [214343.266605] [<ffffffff81052d0d>] ? lapic_next_event+0x1d/0x30 [214343.266609] [<ffffffff81085dd1>] __do_softirq+0x101/0x290 [214343.266613] [<ffffffff81844f0c>] do_softirq_own_stack+0x1c/0x30 [214343.266615] <EOI> [<ffffffff81085818>] do_softirq.part.19+0x38/0x40 [214343.266621] [<ffffffff8108589d>] __local_bh_enable_ip+0x7d/0x80 [214343.266624] [<ffffffff81779d89>] ip_finish_output2+0x159/0x380 [214343.266627] [<ffffffff8177ad96>] ip_finish_output+0x136/0x1f0 [214343.266630] [<ffffffff8176e3a3>] ? nf_hook_slow+0x73/0xd0 [214343.266633] [<ffffffff8177b79e>] ip_output+0x6e/0xe0 [214343.266636] [<ffffffff8177ac60>] ? __ip_flush_pending_frames.isra.41+0x90/0x90 [214343.266639] [<ffffffff8177af65>] ip_local_out+0x35/0x40 [214343.266642] [<ffffffff8177c169>] ip_send_skb+0x19/0x40 [214343.266645] [<ffffffff817a3dd2>] udp_send_skb+0xb2/0x290 [214343.266648] [<ffffffff817a4d27>] udp_sendmsg+0x307/0xae0 [214343.266653] [<ffffffff813a06f1>] ? aa_sock_msg_perm+0x61/0x150 [214343.266657] [<ffffffff817b26c5>] inet_sendmsg+0x65/0xa0 [214343.266660] [<ffffffff8171aad8>] sock_sendmsg+0x38/0x50 [214343.266663] [<ffffffff8171b0c1>] SYSC_sendto+0x101/0x190 [214343.266666] [<ffffffff810ac650>] ? wake_up_q+0x70/0x70 [214343.266670] [<ffffffff81003938>] ? syscall_trace_enter_phase1+0xc8/0x140 [214343.266673] [<ffffffff8171bbde>] SyS_sendto+0xe/0x10 [214343.266677] [<ffffffff818431f2>] entry_SYSCALL_64_fastpath+0x16/0x71 [214343.266680] ---[ end trace f83874bb052259ee ]--- -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1705447 Title: misleading kernel warning skb_warn_bad_offload during checksum calculation Status in linux package in Ubuntu: In Progress Status in linux source package in Xenial: Fix Released Status in linux source package in Zesty: Fix Released Bug description: Even when the packet says checksum calculation is unnecessary the kernel will still check the checksum and display a warning that the checksum is bad. This has been fixed upstream in Kernel 4.11 by commit id: b2504a5dbef3305ef41988ad270b0e8ec289331c We have reports of Ubuntu 16.04 virtual machines (with ip forward enabled) displaying these warnings: [10480.074664] ------------[ cut here ]------------ [10480.074667] WARNING: CPU: 1 PID: 0 at /build/linux-hwe-X3pKE5/linux-hwe-4.8.0/net/core/dev.c:2444 skb_warn_bad_offload+0xd1/0x120 [10480.074669] docker0: caps=(0x00000400ffbb78e9, 0x0000000000000000) len=2962 data_len=2834 gso_size=1448 gso_type=5 ip_summed=1 [10480.074670] Modules linked in: veth nfsv3 nfs_acl rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs lockd grace sunrpc fscache ipt_MASQUERADE nf_nat_masquerade_ipv4 xfrm_user xfrm_algo iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter ip_tables xt_conntrack x_tables nf_nat nf_conntrack br_netfilter bridge stp llc aufs zfs(PO) zunicode(PO) zcommon(PO) znvpair(PO) spl(O) zavl(PO) crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw glue_helper ablk_helper cryptd input_leds joydev serio_raw i2c_piix4 mac_hid parport_pc ppdev lp parport autofs4 hid_generic usbhid hid virtio_scsi psmouse virtio_net pata_acpi floppy [10480.074695] CPU: 1 PID: 0 Comm: swapper/1 Tainted: P W O 4.8.0-52-generic #55~16.04.1-Ubuntu [10480.074696] Hardware name: Nutanix AHV, BIOS seabios-1.7.5-11.el6 04/01/2014 [10480.074697] 0000000000000286 ec176c2ae03bc036 ffff8beef5643870 ffffffffb7a2e7b3 [10480.074699] ffff8beef56438c0 0000000000000000 ffff8beef56438b0 ffffffffb768314b [10480.074702] 0000098cb84fba80 ffff8bed61f82000 ffff8bee9915c000 0000000000000005 [10480.074704] Call Trace: [10480.074704] <IRQ> [<ffffffffb7a2e7b3>] dump_stack+0x63/0x90 [10480.074708] [<ffffffffb768314b>] __warn+0xcb/0xf0 [10480.074710] [<ffffffffb76831cf>] warn_slowpath_fmt+0x5f/0x80 [10480.074713] [<ffffffffb7a35012>] ? ___ratelimit+0xa2/0xf0 [10480.074714] [<ffffffffb7d7c681>] skb_warn_bad_offload+0xd1/0x120 [10480.074716] [<ffffffffb7d80d58>] __skb_gso_segment+0xd8/0x140 [10480.074717] [<ffffffffb7d811af>] validate_xmit_skb+0x14f/0x2a0 [10480.074719] [<ffffffffb7d81972>] __dev_queue_xmit+0x322/0x6d0 [10480.074720] [<ffffffffc03cd746>] ? nf_nat_ipv4_fn+0x1a6/0x230 [nf_nat_ipv4] [10480.074723] [<ffffffffb7d81d30>] dev_queue_xmit+0x10/0x20 [10480.074725] [<ffffffffb7dc5272>] ip_finish_output2+0x292/0x380 [10480.074726] [<ffffffffc040223d>] ? ipv4_confirm+0x7d/0x100 [nf_conntrack_ipv4] [10480.074728] [<ffffffffb7dc60a2>] ip_finish_output+0x132/0x1d0 [10480.074729] [<ffffffffb7db9703>] ? nf_hook_slow+0x73/0xd0 [10480.074731] [<ffffffffb7dc6aee>] ip_output+0x6e/0xf0 [10480.074733] [<ffffffffb7dc5f70>] ? __ip_flush_pending_frames.isra.40+0x90/0x90 [10480.074736] [<ffffffffb7dc2883>] ip_forward_finish+0x43/0x70 [10480.074738] [<ffffffffb7dc2c34>] ip_forward+0x384/0x480 [10480.074739] [<ffffffffb7dc2840>] ? ip_frag_mem+0x50/0x50 [10480.074741] [<ffffffffb7dc085b>] ip_rcv_finish+0x11b/0x400 [10480.074743] [<ffffffffb7dc11eb>] ip_rcv+0x28b/0x3c0 [10480.074744] [<ffffffffb7dc0740>] ? inet_del_offload+0x40/0x40 [10480.074746] [<ffffffffb7d7ec44>] __netif_receive_skb_core+0x524/0xab0 [10480.074747] [<ffffffffb780aaa7>] ? kmem_cache_alloc+0xd7/0x1b0 [10480.074749] [<ffffffffb7d6f7ca>] ? __build_skb+0x2a/0xe0 [10480.074751] [<ffffffffb7d7f1e8>] __netif_receive_skb+0x18/0x60 [10480.074753] [<ffffffffb7d7f262>] netif_receive_skb_internal+0x32/0xa0 [10480.074754] [<ffffffffb7d8025d>] napi_gro_receive+0xcd/0x120 [10480.074756] [<ffffffffc0286963>] virtnet_receive+0x1c3/0x970 [virtio_net] [10480.074758] [<ffffffffb76b5e59>] ? update_cfs_rq_load_avg+0x1f9/0x4c0 [10480.074760] [<ffffffffc028712d>] virtnet_poll+0x1d/0x80 [virtio_net] [10480.074762] [<ffffffffb7d7fa68>] net_rx_action+0x238/0x380 [10480.074764] [<ffffffffb7e9d406>] __do_softirq+0xf6/0x280 [10480.074765] [<ffffffffb7688eb3>] irq_exit+0xa3/0xb0 [10480.074766] [<ffffffffb7e9d164>] do_IRQ+0x54/0xd0 [10480.074768] [<ffffffffb7e9b242>] common_interrupt+0x82/0x82 [10480.074768] <EOI> [<ffffffffb7664296>] ? native_safe_halt+0x6/0x10 [10480.074772] [<ffffffffb7637e9e>] default_idle+0x1e/0xd0 [10480.074774] [<ffffffffb763861f>] arch_cpu_idle+0xf/0x20 [10480.074775] [<ffffffffb76c7b3a>] default_idle_call+0x2a/0x40 [10480.074776] [<ffffffffb76c7e3a>] cpu_startup_entry+0x2ea/0x350 [10480.074778] [<ffffffffb76518b1>] start_secondary+0x151/0x190 [10480.074781] ---[ end trace 3a9bd18de5564b05 ]--- We have recompiled your latest 16.04.2 kernel with this patch and confirmed that this warning does not happen. Could you please consider including this fix in your next 16.04 LTS release? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1705447/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
