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Message-ID: <50D07A0F.2010709@univ-nantes.fr> Date: Tue, 18 Dec 2012 15:13:35 +0100 From: Yann Dupont <Yann.Dupont@...v-nantes.fr> To: Eric Dumazet <eric.dumazet@...il.com> CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>, Ben Hutchings <bhutchings@...arflare.com>, Herbert Xu <herbert@...dor.apana.org.au> Subject: Re: skb_warn_bad_offload with kernel 3.5 (maybe gso/bridge related ?) Le 03/08/2012 10:51, Eric Dumazet a écrit : > > As the problem seems more or less gso related, I've deactivated gso two > days ago. This cure the symptom, running ok since. > > Anyone here seeing this problem ? > > Cheers, > > I dont know, maybe its more a GRO issue ? > > When a NIC delivers skbs with ip_summed set to CHECKSUM_UNNECESSARY, > should resulting GRO packet have ip_summed set to CHECKSUM_PARTIAL ? > > CC Ben and Herbert > > Hello. I'm still seeing this issue with 3.7.0 example : [335685.629630] ------------[ cut here ]------------ [335685.629661] WARNING: at net/core/dev.c:1941 skb_warn_bad_offload+0xb6/0xc1() [335685.629691] Hardware name: PowerEdge M610 [335685.629720] : caps=(0x0000000000005000, 0x0000000000000000) len=12808 data_len=11308 gso_size=1448 gso_type=1 ip_summed=1 [335685.629769] Modules linked in: nfnetlink_log nfnetlink ip6table_raw iptable_raw openvswitch veth ebtable_nat ebtables dlm sctp configfs nfsd auth_rpcgss nfs_acl nfs lockd fscache sunrpc xt_physdev xt_multiport ip6table_filter ip6_tables xt_LOG xt_limit xt_tcpudp xt_state iptable_filter ip_tables x_tables nf_conntrack_tftp nf_conntrack_ftp nf_conntrack_ipv4 nf_defrag_ipv4 8021q bridge stp llc ext2 mbcache dm_round_robin nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack dm_multipath scsi_dh ipv6 coretemp kvm iTCO_wdt snd_pcm ioatdma lpc_ich snd_page_alloc i7core_edac mfd_core snd_timer edac_core crc32c_intel snd soundcore pcspkr dca dcdbas microcode joydev evdev processor hed button thermal_sys xfs exportfs btrfs zlib_deflate dm_mod sg sd_mod hid_generic usbhid hid ata_generic uhci_hcd ata_piix libata ide_pci_generic lpfc ide_core mptsas bnx2x scsi_transport_sas mptscsih mdio mptbase ehci_hcd scsi_transport_fc scsi_tgt crc32c scsi_mod libcrc32c bnx2 [335685.630305] Pid: 0, comm: swapper/4 Tainted: G W 3.7.0-dsiun-121008 #2 [335685.630348] Call Trace: [335685.630368] <IRQ> [<ffffffff813d1400>] ? skb_warn_bad_offload+0x74/0xc1 [335685.630403] [<ffffffff8103e839>] ? warn_slowpath_common+0x79/0xc0 [335685.630430] [<ffffffff8103e935>] ? warn_slowpath_fmt+0x45/0x50 [335685.630458] [<ffffffff813d1442>] ? skb_warn_bad_offload+0xb6/0xc1 [335685.630486] [<ffffffff81321af6>] ? skb_gso_segment+0x206/0x280 [335685.630513] [<ffffffff81324ada>] ? dev_hard_start_xmit+0x9a/0x4a0 [335685.630542] [<ffffffffa0087cde>] ? ipv4_confirm+0xae/0x110 [nf_conntrack_ipv4] [335685.630590] [<ffffffffa13ceeb0>] ? br_parse_ip_options+0x220/0x220 [bridge] [335685.630620] [<ffffffff813403dd>] ? sch_direct_xmit+0xfd/0x1d0 [335685.630647] [<ffffffff8132529e>] ? dev_queue_xmit+0x16e/0x410 [335685.630679] [<ffffffffa13c8c62>] ? br_dev_queue_push_xmit+0x72/0xc0 [bridge] [335685.630723] [<ffffffffa13cfb33>] ? br_nf_post_routing+0x223/0x340 [bridge] [335685.630754] [<ffffffffa13c8bf0>] ? deliver_clone+0x60/0x60 [bridge] [335685.630785] [<ffffffff8134d50d>] ? nf_iterate+0x8d/0xc0 [335685.630813] [<ffffffffa13cef30>] ? br_nf_dev_queue_xmit+0x80/0x80 [bridge] [335685.630843] [<ffffffffa13c8bf0>] ? deliver_clone+0x60/0x60 [bridge] [335685.630871] [<ffffffff8134d5ae>] ? nf_hook_slow+0x6e/0x130 [335685.630898] [<ffffffffa13c8bf0>] ? deliver_clone+0x60/0x60 [bridge] [335685.630927] [<ffffffffa13c8f20>] ? br_multicast_flood+0x170/0x170 [bridge] [335685.630958] [<ffffffffa13c8f62>] ? br_forward_finish+0x42/0x50 [bridge] [335685.630988] [<ffffffffa13cefe9>] ? br_nf_forward_finish+0xb9/0x180 [bridge] [335685.631018] [<ffffffffa13cf7d3>] ? br_nf_forward_ip+0x293/0x3d0 [bridge] [335685.631051] [<ffffffffa13c8f20>] ? br_multicast_flood+0x170/0x170 [bridge] [335685.631081] [<ffffffff8134d50d>] ? nf_iterate+0x8d/0xc0 [335685.631111] [<ffffffffa13c8f20>] ? br_multicast_flood+0x170/0x170 [bridge] [335685.631140] [<ffffffff8134d5ae>] ? nf_hook_slow+0x6e/0x130 [335685.631168] [<ffffffffa13c8f20>] ? br_multicast_flood+0x170/0x170 [bridge] [335685.631198] [<ffffffffa13c9000>] ? __br_forward+0x90/0xb0 [bridge] [335685.631227] [<ffffffffa13c9e44>] ? br_handle_frame_finish+0x214/0x2b0 [bridge] [335685.631272] [<ffffffffa13cf31f>] ? br_nf_pre_routing_finish+0x14f/0x370 [bridge] [335685.631317] [<ffffffffa13d01e2>] ? br_nf_pre_routing+0x3a2/0x650 [bridge] [335685.631348] [<ffffffffa13c9c30>] ? br_handle_local_finish+0x50/0x50 [bridge] [335685.631391] [<ffffffff8134d50d>] ? nf_iterate+0x8d/0xc0 [335685.631419] [<ffffffffa13c9c30>] ? br_handle_local_finish+0x50/0x50 [bridge] [335685.631462] [<ffffffff8134d5ae>] ? nf_hook_slow+0x6e/0x130 [335685.631514] [<ffffffffa13c9c30>] ? br_handle_local_finish+0x50/0x50 [bridge] [335685.631562] [<ffffffffa13ca0c0>] ? br_handle_frame+0x1e0/0x280 [bridge] [335685.631591] [<ffffffff81323135>] ? __netif_receive_skb+0x215/0x860 [335685.631619] [<ffffffff81125417>] ? alloc_pages_current+0xb7/0x130 [335685.631648] [<ffffffff8100a3f5>] ? read_tsc+0x5/0x20 [335685.631677] [<ffffffff8132390a>] ? netif_receive_skb+0x1a/0x80 [335685.631704] [<ffffffff81323a60>] ? napi_skb_finish+0x50/0x70 [335685.631735] [<ffffffffa02456e6>] ? bnx2x_rx_int+0x6a6/0x1500 [bnx2x] [335685.631765] [<ffffffffa13c9c30>] ? br_handle_local_finish+0x50/0x50 [bridge] [335685.631810] [<ffffffffa13ca0c0>] ? br_handle_frame+0x1e0/0x280 [bridge] [335685.632982] [<ffffffffa02465d3>] ? bnx2x_poll+0x93/0x2b0 [bnx2x] [335685.633010] [<ffffffff81323135>] ? __netif_receive_skb+0x215/0x860 [335685.633038] [<ffffffff813242e8>] ? net_rx_action+0x138/0x240 [335685.633065] [<ffffffff810469ae>] ? __do_softirq+0xbe/0x1f0 [335685.633092] [<ffffffff813d5cdc>] ? call_softirq+0x1c/0x30 [335685.633118] [<ffffffff81004cb5>] ? do_softirq+0x75/0xb0 [335685.633144] [<ffffffff81046c45>] ? irq_exit+0xa5/0xb0 [335685.633170] [<ffffffff8100492b>] ? do_IRQ+0x5b/0xd0 [335685.633196] [<ffffffff813d416d>] ? common_interrupt+0x6d/0x6d [335685.633222] <EOI> [<ffffffff8125204c>] ? intel_idle+0xec/0x160 [335685.633257] [<ffffffff8125202a>] ? intel_idle+0xca/0x160 [335685.633286] [<ffffffff812f71bd>] ? cpuidle_idle_call+0x9d/0x240 [335685.633315] [<ffffffff8100c335>] ? cpu_idle+0x65/0xd0 [335685.633340] ---[ end trace 2142bc9cd23c0d87 ]--- Only seeing this with bridge activated, and with bnx2x ethtool -K eth2 gso cure the problem. Cheers, -- Yann Dupont - Service IRTS, DSI Université de Nantes Tel : 02.53.48.49.20 - Mail/Jabber : Yann.Dupont@...v-nantes.fr -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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