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qvo dump stack skb_warn_bad_offload

asked 2018-02-12 10:17:24 -0600

jamesopst gravatar image

hi all,

i'm running Newton on Ubuntu 16.04.1 with kernel version 4.10.0-42 and I see the below dump printed in /var/log/messages a few times in a row and then again randomly 10 minutes later. I can't tell yet if it is causing issues in my environment. can anyone shed any light on what it is, pls?


2018-02-10T07:29:59.104983+00:00 node-113 kernel: [ 7494.846306] WARNING: CPU: 30 PID: 34823 at /build/linux-hwe-0vY49E/linux-hwe-4.10.0/net/core/dev.c:2576 skb_warn_bad_offload+0xd1/0x120
2018-02-10T07:29:59.104986+00:00 node-113 kernel: [ 7494.846308] qvo4ed33bd2-1a: caps=(0x00000c229fbb59e9, 0x0000000000000000) len=1572 data_len=0 gso_size=1480 gso_type=6 ip_summed=0
2018-02-10T07:29:59.105015+00:00 node-113 kernel: [ 7494.846309] Modules linked in: vhost_net vhost macvtap macvlan ip6table_raw xt_mac xt_tcpudp xt_physdev br_netfilter veth ebtable_filter ebtables openvswitch nf_nat_ipv6 nf_nat_ipv4 nf_nat ocfs2 quota_tree ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm ocfs2_nodemanager ocfs2_stackglue ip6table_filter ip6_tables xt_multiport xt_conntrack iptable_filter xt_comment xt_CT iptable_raw ip_tables x_tables xfs ipmi_ssif bridge joydev input_leds ipmi_si ipmi_devintf ipmi_msghandler 8021q garp mrp stp llc serio_raw hpilo intel_rapl sb_edac edac_core x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel crct10dif_pclmul kvm crc32_pclmul ghash_clmulni_intel pcbc aesni_intel shpchp aes_x86_64 crypto_simd glue_helper cryptd intel_cstate intel_rapl_perf irqbypass lpc_ich ioatdma dca acpi_power_meter mac_hid ib_iser
2018-02-10T07:29:59.105019+00:00 node-113 kernel: [ 7494.846350]  rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nf_conntrack_proto_gre nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear dm_round_robin ses enclosure scsi_transport_sas uas usb_storage hid_generic usbhid hid psmouse i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt lpfc fb_sys_fops drm scsi_transport_fc be2net wmi fjes scsi_dh_emc scsi_dh_rdac scsi_dh_alua dm_multipath
2018-02-10T07:29:59.105020+00:00 node-113 kernel: [ 7494.846382] CPU: 30 PID: 34823 Comm: vhost-34809 Not tainted 4.10.0-42-generic #46~16.04.1-Ubuntu
2018-02-10T07:29:59.105021+00:00 node-113 kernel: [ 7494.846382] Hardware name: HP ProLiant BL460c Gen9, BIOS I36 02/17/2017
2018-02-10T07:29:59.105022+00:00 node-113 kernel: [ 7494.846383] Call Trace:
2018-02-10T07:29:59.105024+00:00 node-113 kernel: [ 7494.846385]  <IRQ>
2018-02-10T07:29:59.105026+00:00 node-113 kernel: [ 7494.846390]  dump_stack+0x63/0x90
2018-02-10T07:29:59.105058+00:00 node-113 kernel: [ 7494.846392]  __warn+0xcb/0xf0
2018-02-10T07:29:59.105060+00:00 node-113 kernel: [ 7494.846394]  warn_slowpath_fmt+0x5f/0x80
2018-02-10T07:29:59.105061+00:00 node-113 kernel: [ 7494.846397]  ? ___ratelimit+0xa2/0xf0
2018-02-10T07:29:59.105062+00:00 node-113 kernel: [ 7494.846399]  skb_warn_bad_offload+0xd1/0x120
2018-02-10T07:29:59.105064+00:00 node-113 kernel: [ 7494.846401]  __skb_gso_segment+0x17d/0x190
2018-02-10T07:29:59.105066+00:00 node-113 kernel: [ 7494.846407]  queue_gso_packets+0x62/0x160 [openvswitch]
2018-02-10T07:29:59.105068+00:00 node-113 kernel: [ 7494.846415]  ? br_fdb_external_learn_del+0x120/0x120 [bridge]
2018-02-10T07:29:59.105069+00:00 node-113 kernel: [ 7494.846417]  ? br_nf_hook_thresh+0xac/0xc0 [br_netfilter]
2018-02-10T07:29:59.105069+00:00 node-113 kernel: [ 7494.846419]  ? br_nf_forward_finish+0xe0/0x1b0 [br_netfilter]
2018-02-10T07:29:59.105070+00:00 node-113 kernel: [ 7494.846423]  ? br_dev_queue_push_xmit+0x150/0x150 [bridge]
2018-02-10T07:29:59.105072+00:00 node-113 kernel: [ 7494 ...
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answered 2018-02-13 03:52:53 -0600

Bernd Bausch gravatar image

Googling for skb_warn_bad_offloadresults in a number of bug reports such as

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thanks I'll checked it out. your are right it sounds very close to what we are seeing. I did google before I posted but I did not see this match. i need to reread that bug report and find out how to implement that fix in our environment. thank you

jamesopst gravatar imagejamesopst ( 2018-02-14 09:54:34 -0600 )edit

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Asked: 2018-02-12 10:17:24 -0600

Seen: 14 times

Last updated: Feb 13