Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.12 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.12-rc5 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1698241 Title: WARNING: CPU: 13 PID: 0 at /build/linux- 0XAgc4/linux-4.4.0/net/ipv4/tcp_output.c:1145 Status in linux package in Ubuntu: Incomplete Bug description: ------------[ cut here ]------------ WARNING: CPU: 13 PID: 0 at /build/linux-0XAgc4/linux-4.4.0/net/ipv4/tcp_output.c:1145 tcp_fragment+0x34d/0x370() Modules linked in: ip6table_filter ipip tunnel4 ip_tunnel cpuid 8021q garp mrp stp llc ip6_tables binfmt_misc xt_comment nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp xt_addrtype iptable_filt iptable_raw ip_tables x_tables intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel ipmi_ssif aes_x86_64 _helper ablk_helper hpilo cryptd serio_raw sb_edac edac_core ioatdma lpc_ich shpchp 8250_fintek mac_hid acpi_power_meter ipmi_si ipmi_devintf ipmi_msghandler autofs4 raid10 raid456 async_raid6_reco ync_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ixgbe dca vxlan ip6_udp_tunnel udp_tunnel ptp ahci pps_core psmouse libahci mdio wmi fjes [last unloaded: nf_conntrack] CPU: 13 PID: 0 Comm: swapper/13 Not tainted 4.4.0-78-generic #99-Ubuntu 0000000000000286 24b314fc942cf971 ffff88105f3439a8 ffffffff813f8dd3 0000000000000000 ffffffff81d71d78 ffff88105f3439e0 ffffffff81081302 ffff88088a1c5000 ffff880cc988f800 000000000000004b 0000000000000000 Call Trace: <IRQ> [<ffffffff813f8dd3>] dump_stack+0x63/0x90 [<ffffffff81081302>] warn_slowpath_common+0x82/0xc0 [<ffffffff8108144a>] warn_slowpath_null+0x1a/0x20 [<ffffffff817903ad>] tcp_fragment+0x34d/0x370 [<ffffffff81785b7f>] tcp_mark_head_lost+0x14f/0x240 [<ffffffff8178692c>] tcp_update_scoreboard+0x4c/0x70 [<ffffffff8178c3d2>] tcp_fastretrans_alert+0x6f2/0xaa0 [<ffffffff8178cbeb>] tcp_ack+0x46b/0x800 [<ffffffff8178da39>] tcp_rcv_established+0x1d9/0x780 [<ffffffff8174c232>] ? sk_filter_trim_cap+0x42/0x160 [<ffffffff81798a05>] tcp_v4_do_rcv+0x145/0x200 [<ffffffff81799bf2>] tcp_v4_rcv+0x872/0xa20 [<ffffffffc02290c7>] ? iptable_filter_hook+0x27/0x56 [iptable_filter] [<ffffffff8176c172>] ? nf_iterate+0x62/0x80 [<ffffffff81773504>] ip_local_deliver_finish+0x94/0x1e0 [<ffffffff8177380f>] ip_local_deliver+0x6f/0xe0 [<ffffffff81773470>] ? ip_rcv_finish+0x320/0x320 [<ffffffff817731e2>] ip_rcv_finish+0x92/0x320 [<ffffffff81773b11>] ip_rcv+0x291/0x3a0 [<ffffffff81773150>] ? inet_del_offload+0x40/0x40 [<ffffffff817357a4>] __netif_receive_skb_core+0x704/0xa60 [<ffffffff8179ec00>] ? tcp4_gro_receive+0x130/0x1d0 [<ffffffff81735b18>] __netif_receive_skb+0x18/0x60 [<ffffffff81735b92>] netif_receive_skb_internal+0x32/0xa0 [<ffffffff81736813>] napi_gro_receive+0xc3/0x120 [<ffffffffc02b8dfa>] gro_cell_poll+0x5a/0x90 [ip_tunnel] [<ffffffff8173605e>] net_rx_action+0x21e/0x360 [<ffffffff81085de1>] __do_softirq+0x101/0x290 [<ffffffff810860e3>] irq_exit+0xa3/0xb0 [<ffffffff81050e13>] smp_call_function_single_interrupt+0x33/0x40 [<ffffffff81841e62>] call_function_single_interrupt+0x82/0x90 <EOI> [<ffffffff816d4131>] ? cpuidle_enter_state+0x111/0x2b0 [<ffffffff816d4307>] cpuidle_enter+0x17/0x20 [<ffffffff810c4592>] call_cpuidle+0x32/0x60 [<ffffffff816d42e3>] ? cpuidle_select+0x13/0x20 [<ffffffff810c4850>] cpu_startup_entry+0x290/0x350 [<ffffffff810517c4>] start_secondary+0x154/0x190 ---[ end trace f0d076c2d7e8bb40 ]--- To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1698241/+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
