[Expired for linux (Ubuntu) because there has been no activity for 60 days.]
** Changed in: linux (Ubuntu) Status: Incomplete => Expired -- 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/1716207 Title: WARNING: CPU: 0 PID: 0 at linux-hwe-4.10.0/net/ipv4/tcp_input.c:2241 tcp_mark_head_lost+0x1da/0x2d0 Status in linux package in Ubuntu: Expired Bug description: Got this warning a few days after upgrading my Ubuntu 16.04.3 LTS server from 4.4 to 4.10.0-33 (linux-hwe), and applying "bbr" as congestion control. I'm using the following non-default kernel parameters: net.core.somaxconn = 512 net.core.default_qdisc = fq net.ipv4.tcp_congestion_control = bbr net.ipv4.tcp_slow_start_after_idle = 0 net.ipv4.tcp_mtu_probing = 1 net.core.rmem_max = 67108864 net.core.wmem_max = 67108864 net.ipv4.tcp_rmem = 4096 87380 33554432 net.ipv4.tcp_wmem = 4096 65536 33554432 NIC: HP CN1000E 10GbE # ethtool -k enp4s0f0 Features for enp4s0f0: rx-checksumming: on tx-checksumming: on tx-checksum-ipv4: on tx-checksum-ip-generic: off [fixed] tx-checksum-ipv6: on tx-checksum-fcoe-crc: off [fixed] tx-checksum-sctp: off [fixed] scatter-gather: on tx-scatter-gather: on tx-scatter-gather-fraglist: off [fixed] tcp-segmentation-offload: on tx-tcp-segmentation: on tx-tcp-ecn-segmentation: off [fixed] tx-tcp-mangleid-segmentation: off tx-tcp6-segmentation: on udp-fragmentation-offload: off [fixed] generic-segmentation-offload: on generic-receive-offload: on large-receive-offload: off [fixed] rx-vlan-offload: on [fixed] tx-vlan-offload: on ntuple-filters: off [fixed] receive-hashing: on highdma: on [fixed] rx-vlan-filter: on [fixed] vlan-challenged: off [fixed] tx-lockless: off [fixed] netns-local: off [fixed] tx-gso-robust: off [fixed] tx-fcoe-segmentation: off [fixed] tx-gre-segmentation: off [fixed] tx-gre-csum-segmentation: off [fixed] tx-ipxip4-segmentation: off [fixed] tx-ipxip6-segmentation: off [fixed] tx-udp_tnl-segmentation: off [fixed] tx-udp_tnl-csum-segmentation: off [fixed] tx-gso-partial: off [fixed] tx-sctp-segmentation: off [fixed] fcoe-mtu: off [fixed] tx-nocache-copy: off loopback: off [fixed] rx-fcs: off [fixed] rx-all: off [fixed] tx-vlan-stag-hw-insert: off [fixed] rx-vlan-stag-hw-parse: off [fixed] rx-vlan-stag-filter: off [fixed] l2-fwd-offload: off [fixed] busy-poll: on [fixed] hw-tc-offload: off [fixed] Warning in kernel ring buffer: [200448.082342] ------------[ cut here ]------------ [200448.082360] WARNING: CPU: 0 PID: 0 at /build/linux-hwe-YA6IuF/linux-hwe-4.10.0/net/ipv4/tcp_input.c:2241 tcp_mark_head_lost+0x1da/0x2d0 [200448.082362] Modules linked in: binfmt_misc ses enclosure bonding intel_rapl sb_edac ipmi_ssif edac_core x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass mei_me cdc_ether shpchp usbnet intel_cstate intel_rapl_perf mii mei ipmi_si input_leds joydev ipmi_devintf ipmi_msghandler lpc_ich mac_hid acpi_power_meter acpi_pad sch_fq tcp_bbr ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi coretemp autofs4 btrfs raid10 raid1 raid0 multipath linear raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c mgag200 i2c_algo_bit ttm crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea pcbc mpt3sas hid_generic sysfillrect sysimgblt aesni_intel fb_sys_fops tg3 raid_class usbhid aes_x86_64 lpfc crypto_simd [200448.082411] glue_helper ptp scsi_transport_sas megaraid_sas drm hid be2net scsi_transport_fc cryptd pps_core wmi fjes [200448.082420] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.10.0-33-generic #37~16.04.1-Ubuntu [200448.082421] Hardware name: Google Inc Google Search Appliance/0JP31P, BIOS 2.5.4 01/22/2016 [200448.082423] Call Trace: [200448.082424] <IRQ> [200448.082429] dump_stack+0x63/0x90 [200448.082431] __warn+0xcb/0xf0 [200448.082433] warn_slowpath_null+0x1d/0x20 [200448.082434] tcp_mark_head_lost+0x1da/0x2d0 [200448.082436] tcp_update_scoreboard+0x68/0x70 [200448.082438] tcp_fastretrans_alert+0x72c/0xb20 [200448.082439] tcp_ack+0x4d8/0xa60 [200448.082441] tcp_rcv_established+0x1bc/0x700 [200448.082444] ? sk_filter_trim_cap+0x47/0x170 [200448.082446] tcp_v4_do_rcv+0x145/0x200 [200448.082447] tcp_v4_rcv+0x9bb/0xa40 [200448.082450] ? tcp_v6_rcv+0x8e3/0x960 [200448.082452] ip_local_deliver_finish+0x94/0x1e0 [200448.082453] ip_local_deliver+0x6f/0xe0 [200448.082455] ? tcp_v4_early_demux+0x13a/0x150 [200448.082456] ip_rcv_finish+0x11b/0x400 [200448.082457] ip_rcv+0x28b/0x3a0 [200448.082461] __netif_receive_skb_core+0x51e/0xa70 [200448.082463] ? free_compound_page+0x1b/0x20 [200448.082465] ? __put_compound_page+0x2b/0x30 [200448.082467] __netif_receive_skb+0x18/0x60 [200448.082468] netif_receive_skb_internal+0x32/0xa0 [200448.082470] napi_gro_frags+0xdb/0x210 [200448.082476] be_process_rx+0x2f3/0x990 [be2net] [200448.082478] ? consume_skb+0x34/0x90 [200448.082482] be_poll+0x1f2/0x490 [be2net] [200448.082484] net_rx_action+0x23e/0x390 [200448.082486] __do_softirq+0xed/0x297 [200448.082488] irq_exit+0xb6/0xc0 [200448.082489] do_IRQ+0x4f/0xd0 [200448.082492] common_interrupt+0x89/0x89 [200448.082494] RIP: 0010:poll_idle+0x2e/0x5c [200448.082495] RSP: 0018:ffffffff91c03dd0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff47 [200448.082499] RAX: 0000000000200000 RBX: 0000000000000000 RCX: ffffffff91c10500 [200448.082499] RDX: 0000000000000000 RSI: ffffffff91ce71a0 RDI: ffff932d4f822c30 [200448.082500] RBP: ffffffff91c03dd0 R08: 0000000000000001 R09: 0000000000000006 [200448.082501] R10: 000000000000000f R11: 000000000000002c R12: ffffffff91ce71a0 [200448.082502] R13: ffff932d4f822c30 R14: ffffffff91ce71b8 R15: 0000b64e73d8d3b9 [200448.082502] </IRQ> [200448.082507] cpuidle_enter_state+0xfa/0x2d0 [200448.082508] cpuidle_enter+0x17/0x20 [200448.082511] call_cpuidle+0x23/0x40 [200448.082513] do_idle+0x17f/0x1f0 [200448.082514] cpu_startup_entry+0x71/0x80 [200448.082517] rest_init+0x77/0x80 [200448.082521] start_kernel+0x482/0x4a3 [200448.082523] ? early_idt_handler_array+0x120/0x120 [200448.082524] x86_64_start_reservations+0x24/0x26 [200448.082526] x86_64_start_kernel+0x143/0x166 [200448.082528] start_cpu+0x14/0x14 [200448.082531] ---[ end trace bbcdea131d7e5d8d ]--- [200448.082539] ------------[ cut here ]------------ Followed by 15 similar warnings. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.10.0-33-generic 4.10.0-33.37~16.04.1 ProcVersionSignature: Ubuntu 4.10.0-33.37~16.04.1-generic 4.10.17 Uname: Linux 4.10.0-33-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.10 Architecture: amd64 Date: Sun Sep 10 09:58:23 2017 InstallationDate: Installed on 2017-07-16 (55 days ago) InstallationMedia: Ubuntu-Server 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.8) ProcEnviron: LANGUAGE=en_US:en TERM=xterm-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: linux-hwe UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1716207/+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