Comment 65 for bug 1874464

Hi,

I am facing the same problem in Focal, but not with the onboard TL8111/8168/8411 PCI Express Gigabit Ethernet Controller, but with the USB 3.0 one I have (SIX Electronics Corp. AX88179 Gigabit Ethernet):

------------[ cut here ]------------
[94104.121581] NETDEV WATCHDOG: waneth (ax88179_178a): transmit queue 0 timed out
[94104.121606] WARNING: CPU: 2 PID: 217952 at net/sched/sch_generic.c:467 dev_watchdog+0x24f/0x260
[94104.121615] Modules linked in: binfmt_misc xt_recent nfnetlink nls_iso8859_1 dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua snd_sof_pci_intel_apl snd_sof_intel_hda_common soundwire_intel soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof soundwire_bus snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core intel_rapl_msr snd_soc_sst_ipc intel_rapl_common 8814au(OE) mei_hdcp snd_soc_sst_dsp snd_soc_acpi_intel_match snd_soc_acpi intel_pmc_bxt snd_soc_core intel_telemetry_pltdrv intel_punit_ipc snd_compress intel_telemetry_core snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic ac97_bus ledtrig_audio snd_pcm_dmaengine kvm_intel snd_hda_intel kvm snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec rapl intel_cstate snd_hda_core snd_hwdep snd_pcm snd_timer ax88179_178a cfg80211 efi_pstore mei_me usbnet ee1004 snd mii soundcore mei mac_hid bridge ip6t_REJECT nf_reject_ipv6 stp llc xt_hl
[94104.121696] ip6t_rt ipt_REJECT nf_reject_ipv4 xt_LOG nf_log_syslog xt_limit xt_addrtype xt_tcpudp xt_MASQUERADE iptable_nat nf_nat xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6table_filter ip6_tables sch_fq_codel iptable_filter bpfilter msr ip_tables x_tables autofs4 btrfs blake2b_generic zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear uas usb_storage i915 i2c_algo_bit drm_kms_helper crct10dif_pclmul crc32_pclmul ghash_clmulni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops cec rc_core aesni_intel crypto_simd i2c_i801 xhci_pci i2c_smbus cryptd r8169 realtek xhci_pci_renesas drm sdhci_pci ahci cqhci sdhci libahci video
[94104.121771] CPU: 2 PID: 217952 Comm: PLUGIN[cgroups] Tainted: G OE 5.13.0-22-generic #22~20.04.1-Ubuntu
[94104.121775] Hardware name: GIGABYTE MZGLKDP-00/MZGLKDP-00, BIOS F1 12/21/2017
[94104.121777] RIP: 0010:dev_watchdog+0x24f/0x260
[94104.121782] Code: c7 36 fd ff eb ab 4c 89 ff c6 05 60 f1 6e 01 01 e8 86 11 fa ff 44 89 e9 4c 89 fe 48 c7 c7 20 9c ca 89 48 89 c2 e8 38 17 17 00 <0f> 0b eb 8c 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1f 44 00 00
[94104.121785] RSP: 0018:ffffb515c0138e88 EFLAGS: 00010282
[94104.121788] RAX: 0000000000000000 RBX: ffff91214fc45e00 RCX: 0000000000000027
[94104.121790] RDX: 0000000000000027 RSI: 00000000ffffdfff RDI: ffff9124b05189c8
[94104.121792] RBP: ffffb515c0138eb8 R08: ffff9124b05189c0 R09: ffffb515c0138c60
[94104.121794] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
[94104.121795] R13: 0000000000000000 R14: ffff912154a7d480 R15: ffff912154a7d000
[94104.121797] FS: 00007f74619e5700(0000) GS:ffff9124b0500000(0000) knlGS:0000000000000000
[94104.121800] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[94104.121802] CR2: 00005635dd41b584 CR3: 000000020592a000 CR4: 0000000000350ee0
[94104.121805] Call Trace:
[94104.121807] <IRQ>
[94104.121812] ? pfifo_fast_enqueue+0x150/0x150
[94104.121816] call_timer_fn+0x2c/0x100
[94104.121821] run_timer_softirq+0x3d7/0x480
[94104.121824] ? perf_trace_softirq+0x9d/0xd0
[94104.121829] __do_softirq+0xdd/0x29b
[94104.121835] irq_exit_rcu+0xa4/0xb0
[94104.121837] sysvec_apic_timer_interrupt+0x7c/0x90
[94104.121841] </IRQ>
[94104.121843] asm_sysvec_apic_timer_interrupt+0x12/0x20
[94104.121846] RIP: 0010:errseq_sample+0x2/0x10
[94104.121850] Code: ff 48 d3 e2 48 f7 d2 48 21 d0 0f 01 ca 48 85 c0 0f 94 c0 0f b6 c0 c3 b8 01 00 00 00 c3 b8 f2 ff ff ff c3 cc cc cc cc cc 8b 07 <ba> 00 00 00 00 f6 c4 10 0f 44 c2 c3 66 90 8b 17 31 c0 39 16 74 1b
[94104.121853] RSP: 0018:ffffb515c29cfb68 EFLAGS: 00000286
[94104.121855] RAX: 0000000000000000 RBX: ffff91214298e500 RCX: 0000000200000000
[94104.121857] RDX: 0000000100000000 RSI: 0000000200000000 RDI: ffff91218c293c88
[94104.121859] RBP: ffffb515c29cfba0 R08: ffff91221987a160 R09: ffff9121e1e8c180
[94104.121860] R10: 0000000000746174 R11: 000000008196e1bd R12: ffff91218c293a98
[94104.121862] R13: 0000000000000000 R14: ffff91214298e510 R15: ffff91214298e500
[94104.121869] ? do_dentry_open+0x44/0x370
[94104.121873] vfs_open+0x2d/0x30
[94104.121877] do_open.isra.0+0x205/0x3e0
[94104.121881] path_openat+0x18e/0xc80
[94104.121884] ? do_sys_openat2+0x1/0x310
[94104.121887] ? page_counter_cancel+0x2c/0x70
[94104.121891] do_filp_open+0xa2/0x110
[94104.121895] ? __check_object_size+0x13f/0x150
[94104.121898] ? alloc_fd+0x58/0x190
[94104.121903] do_sys_openat2+0x245/0x310
[94104.121906] do_sys_open+0x46/0x80
[94104.121910] __x64_sys_openat+0x20/0x30
[94104.121913] do_syscall_64+0x61/0xb0
[94104.121917] ? exit_to_user_mode_prepare+0x3d/0x1c0
[94104.121921] ? syscall_exit_to_user_mode+0x27/0x50
[94104.121924] ? __x64_sys_close+0x12/0x40
[94104.121927] ? do_syscall_64+0x6e/0xb0
[94104.121930] ? syscall_exit_to_user_mode+0x27/0x50
[94104.121932] ? __x64_sys_lseek+0x1a/0x20
[94104.121936] ? do_syscall_64+0x6e/0xb0
[94104.121939] ? do_syscall_64+0x6e/0xb0
[94104.121942] ? asm_sysvec_apic_timer_interrupt+0xa/0x20
[94104.121945] entry_SYSCALL_64_after_hwframe+0x44/0xae
[94104.121948] RIP: 0033:0x7f7464cd0ad4
[94104.121952] Code: 24 20 eb 8f 66 90 44 89 54 24 0c e8 26 f5 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 32 44 89 c7 89 44 24 0c e8 58 f5 ff ff 8b 44
[94104.121954] RSP: 002b:00007f74619e4940 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
[94104.121958] RAX: ffffffffffffffda RBX: 0000561b40230030 RCX: 00007f7464cd0ad4
[94104.121959] RDX: 0000000000000000 RSI: 0000561b3ca85550 RDI: 00000000ffffff9c
[94104.121961] RBP: 0000561b3ca85550 R08: 0000000000000000 R09: 0000000000000000
[94104.121963] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
[94104.121964] R13: 0000000000000000 R14: 0000000000000003 R15: 0000561b3ca750b0
[94104.121968] ---[ end trace 08fa3daa6f068e2c ]---

Kernel in use: 5.13.0-22-generic (linux-image-generic-hwe-20.04-edge)

The weird part is that happens (not 100% sure yet) when Video conference is being made inside my home network. This USB NIC is connected to internet provider router and the onboard NIC to my private network (I use a mini PC, Gigabyte Brix, as a home router/server).

Any idea how to fix this? Is a mayor problem really.

PD: By the way, I've tested one week ago with another USB 3.0 Gigabit NIC, which has a different chip, from Realtek and the same thing happened, so something is going on here). Also, I've tried a fresh install of Ubuntu 20.04 (server) and the same thing. Another thing I've tested is to switch Nics, the public and the private, same problem.