This is a Dell XPS 13 connected to the network via the TB16 dock. Kernel is: Linux ag13.local 4.12.0-0.rc3.git0.2.fc27.x86_64 #1 SMP Tue May 30 19:36:51 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux Host controller of the dock: 09:00.0 USB controller: ASMedia Technology Inc. ASM1042A USB 3.0 Host Controller USB network interface in the dock: /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/7p, 5000M |__ Port 2: Dev 3, If 0, Class=Vendor Specific Class, Driver=r8152, 5000M [32930.573816] usb 4-1.2: new SuperSpeed USB device number 3 using xhci_hcd [32930.591744] usb 4-1.2: New USB device found, idVendor=0bda, idProduct=8153 [32930.591752] usb 4-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=6 [32930.591757] usb 4-1.2: Product: USB 10/100/1000 LAN [32930.591761] usb 4-1.2: Manufacturer: Realtek [32930.591766] usb 4-1.2: SerialNumber: 000001000000 [32930.739428] usb 4-1.2: reset SuperSpeed USB device number 3 using xhci_hcd I *sometimes* get the following in the log and with that the ethernet port stops working. Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: Looking for event-dma 00000001c3eec010 trb-start 00000001c3eebfe0 trb-end 00000001c3eebfe0 seg-start 00000001c3eeb000 seg-end 00000001c3eebff0 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: Looking for event-dma 00000001c3eec020 trb-start 00000001c3eebfe0 trb-end 00000001c3eebfe0 seg-start 00000001c3eeb000 seg-end 00000001c3eebff0 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: Looking for event-dma 00000001c3eec030 trb-start 00000001c3eebfe0 trb-end 00000001c3eebfe0 seg-start 00000001c3eeb000 seg-end 00000001c3eebff0 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: Looking for event-dma 00000001c3eec040 trb-start 00000001c3eebfe0 trb-end 00000001c3eebfe0 seg-start 00000001c3eeb000 seg-end 00000001c3eebff0 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: Looking for event-dma 00000001c3eec050 trb-start 00000001c3eebfe0 trb-end 00000001c3eebfe0 seg-start 00000001c3eeb000 seg-end 00000001c3eebff0 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: Looking for event-dma 00000001c3eec060 trb-start 00000001c3eebfe0 trb-end 00000001c3eebfe0 seg-start 00000001c3eeb000 seg-end 00000001c3eebff0 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: Looking for event-dma 00000001c3eec070 trb-start 00000001c3eebfe0 trb-end 00000001c3eebfe0 seg-start 00000001c3eeb000 seg-end 00000001c3eebff0 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp_code 13 Jun 12 19:00:04 ag13.local kernel: xhci_hcd 0000:09:00.0: Looking for event-dma 00000001c3eec080 trb-start 00000001c3eebfe0 trb-end 00000001c3eebfe0 seg-start 00000001c3eeb000 seg-end 00000001c3eebff0 earlier in the log (and maybe related): Jun 12 18:39:08 ag13.local kernel: WARNING: CPU: 0 PID: 0 at net/core/dev.c:5411 net_rx_action+0x2d0/0x3c0 Jun 12 18:39:08 ag13.local kernel: Modules linked in: cdc_ether usbnet r8152 mii snd_usb_audio snd_usbmidi_lib snd_rawmidi rfcomm fuse ccm xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack libcrc32c iptable_mangle iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables cmac arc4 bnep sunrpc vfat fat hid_multitouch intel_rapl snd_soc_skl x86_pkg_temp_thermal snd_soc_skl_ipc intel_powerclamp snd_soc_sst_ipc ath10k_pci snd_soc_sst_dsp ath10k_core snd_hda_ext_core Jun 12 18:39:08 ag13.local kernel: coretemp snd_soc_sst_match kvm_intel snd_hda_codec_hdmi snd_soc_core kvm mei_wdt mac80211 snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt snd_compress iTCO_vendor_support i2c_designware_platform i2c_designware_core snd_pcm_dmaengine dell_wmi irqbypass ac97_bus crct10dif_pclmul crc32_pclmul snd_hda_intel dell_laptop dell_smbios dcdbas ghash_clmulni_intel snd_hda_codec intel_cstate uvcvideo intel_uncore videobuf2_vmalloc videobuf2_memops snd_hda_core videobuf2_v4l2 snd_hwdep intel_rapl_perf snd_seq videobuf2_core snd_seq_device ath snd_pcm videodev cfg80211 joydev hci_uart btusb snd_timer btrtl snd rtsx_pci_ms media soundcore memstick i2c_i801 idma64 btbcm mei_me mei btqca btintel intel_pch_thermal shpchp processor_thermal_device intel_lpss_pci intel_soc_dts_iosf bluetooth wmi intel_vbtn Jun 12 18:39:08 ag13.local kernel: soc_button_array acpi_als kfifo_buf int3403_thermal ecdh_generic intel_hid intel_lpss_acpi rfkill pinctrl_sunrisepoint intel_lpss sparse_keymap pinctrl_intel industrialio int340x_thermal_zone int3400_thermal acpi_thermal_rel tpm_tis tpm_tis_core acpi_pad tpm btrfs xor i915 rtsx_pci_sdmmc mmc_core raid6_pq i2c_algo_bit drm_kms_helper drm crc32c_intel rtsx_pci serio_raw i2c_hid video Jun 12 18:39:08 ag13.local kernel: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.12.0-0.rc3.git0.2.fc27.x86_64 #1 Jun 12 18:39:08 ag13.local kernel: Hardware name: Dell Inc. XPS 13 9360/05HM5Y, BIOS 1.3.2 01/18/2017 Jun 12 18:39:08 ag13.local kernel: task: ffffffffabe104c0 task.stack: ffffffffabe00000 Jun 12 18:39:08 ag13.local kernel: RIP: 0010:net_rx_action+0x2d0/0x3c0 Jun 12 18:39:08 ag13.local kernel: RSP: 0018:ffff8faabe403eb8 EFLAGS: 00010297 Jun 12 18:39:08 ag13.local kernel: RAX: 0000000000000041 RBX: 00000000ffffffff RCX: ffff8faaa4a81e50 Jun 12 18:39:08 ag13.local kernel: RDX: ffff8fa86f802000 RSI: 00000000fffffe01 RDI: ffffffffc0b476b0 Jun 12 18:39:08 ag13.local kernel: RBP: ffff8faabe403f28 R08: 0000000000000002 R09: 0000000000000000 Jun 12 18:39:08 ag13.local kernel: R10: 0000000000100000 R11: ffffffffab44a0b0 R12: ffff8faaa4a87ba0 Jun 12 18:39:08 ag13.local kernel: R13: 0000000000000040 R14: 0000000000000000 R15: 0000000000000003 Jun 12 18:39:08 ag13.local kernel: FS: 0000000000000000(0000) GS:ffff8faabe400000(0000) knlGS:0000000000000000 Jun 12 18:39:08 ag13.local kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jun 12 18:39:08 ag13.local kernel: CR2: 00007fd0eee69000 CR3: 000000013fe09000 CR4: 00000000003406f0 Jun 12 18:39:08 ag13.local kernel: Call Trace: Jun 12 18:39:08 ag13.local kernel: Jun 12 18:39:08 ag13.local kernel: __do_softirq+0xea/0x2bf Jun 12 18:39:08 ag13.local kernel: irq_exit+0xfb/0x100 Jun 12 18:39:08 ag13.local kernel: do_IRQ+0x80/0xd0 Jun 12 18:39:08 ag13.local kernel: common_interrupt+0x93/0x93 Jun 12 18:39:08 ag13.local kernel: RIP: 0010:cpuidle_enter_state+0x12b/0x2d0 Jun 12 18:39:08 ag13.local kernel: RSP: 0018:ffffffffabe03dc8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff3b Jun 12 18:39:08 ag13.local kernel: RAX: ffff8faabe41a0c0 RBX: 0000179af34e9083 RCX: 000000000000001f Jun 12 18:39:08 ag13.local kernel: RDX: 0000179af34e9083 RSI: ffff8faabe4178d8 RDI: 0000000000000000 Jun 12 18:39:08 ag13.local kernel: RBP: ffffffffabe03e08 R08: cccccccccccccccd R09: 0000000000000018 Jun 12 18:39:08 ag13.local kernel: R10: ffffffffabe03d98 R11: 000000000000070b R12: ffff8faabe423800 Jun 12 18:39:08 ag13.local kernel: R13: 0000000000000000 R14: 0000000000000006 R15: ffffffffabf81838 Jun 12 18:39:08 ag13.local kernel: Jun 12 18:39:08 ag13.local kernel: ? cpuidle_enter_state+0x11b/0x2d0 Jun 12 18:39:08 ag13.local kernel: cpuidle_enter+0x17/0x20 Jun 12 18:39:08 ag13.local kernel: call_cpuidle+0x23/0x40 Jun 12 18:39:08 ag13.local kernel: do_idle+0x18a/0x1e0 Jun 12 18:39:08 ag13.local kernel: cpu_startup_entry+0x71/0x80 Jun 12 18:39:08 ag13.local kernel: rest_init+0x77/0x80 Jun 12 18:39:08 ag13.local kernel: start_kernel+0x450/0x471 Jun 12 18:39:08 ag13.local kernel: ? early_idt_handler_array+0x120/0x120 Jun 12 18:39:08 ag13.local kernel: x86_64_start_reservations+0x29/0x2b Jun 12 18:39:08 ag13.local kernel: x86_64_start_kernel+0x143/0x166 Jun 12 18:39:08 ag13.local kernel: secondary_startup_64+0x9f/0x9f Jun 12 18:39:08 ag13.local kernel: Code: 8b 7e 08 49 83 c6 18 44 89 e9 44 89 fa 4c 89 e6 41 ff d2 4d 8b 16 4d 85 d2 75 e4 4c 8b 75 90 44 89 f8 41 39 c5 0f 8d 95 fe ff ff <0f> ff 41 39 c5 0f 8f 93 fe ff ff 49 8b 44 24 10 a8 04 0f 85 88 Jun 12 18:39:08 ag13.local kernel: ---[ end trace 3fda2d590db48512 ]---