Comment 19 for bug 1874464

I have tested both rc3 and rc4; neither addresses the issue for me. I am seeing a slightly different call trace now though (this is from an rc3 boot):

Jul 06 08:44:48 surprise kernel: ------------[ cut here ]------------
Jul 06 08:44:48 surprise kernel: NETDEV WATCHDOG: enp5s0 (r8169): transmit queue 0 timed out
Jul 06 08:44:48 surprise kernel: WARNING: CPU: 15 PID: 0 at net/sched/sch_generic.c:442 dev_watchdog+0x25e/0x270
Jul 06 08:44:48 surprise kernel: Modules linked in: xt_comment dummy xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp ip6table_mangle ip6table_nat iptable_mangle iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink bpfilter rdma_ucm ib_uverbs rdma_cm iw_cm ib_cm ib_core overlay snd_hda_codec_realtek snd_hda_codec_generic nls_iso8859_1 ledtrig_audio snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device joydev snd_timer edac_mce_amd ucsi_ccg mousedev input_leds amd_energy typec_ucsi rapl wmi_bmof efi_pstore snd typec k10temp soundcore mac_hid sch_fq_codel kvm_amd ccp kvm iptable_filter ip6table_filter ip6_tables br_netfilter bridge stp llc arp_tables parport_pc ppdev lp parport drm backlight ip_tables x_tables autofs4 btrfs blake2b_generic xor raid6_pq libcrc32c dm_crypt hid_microsoft ff_memless hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid
Jul 06 08:44:48 surprise kernel: crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd glue_helper r8169 i2c_piix4 nvme ahci i2c_nvidia_gpu realtek xhci_pci nvme_core libahci xhci_pci_renesas wmi gpio_amdpt gpio_generic
Jul 06 08:44:48 surprise kernel: CPU: 15 PID: 0 Comm: swapper/15 Not tainted 5.8.0-050800-generic #202006282330
Jul 06 08:44:48 surprise kernel: Hardware name: Gigabyte Technology Co., Ltd. B450M DS3H/B450M DS3H-CF, BIOS F4 01/25/2019
Jul 06 08:44:48 surprise kernel: RIP: 0010:dev_watchdog+0x25e/0x270
Jul 06 08:44:48 surprise kernel: Code: 85 c0 75 e5 eb 9c 4c 89 ff c6 05 eb ef 22 01 01 e8 d7 d1 fa ff 44 89 e9 4c 89 fe 48 c7 c7 90 28 e8 b7 48 89 c2 e8 17 1a 6a ff <0f> 0b e9 7a ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00
Jul 06 08:44:48 surprise kernel: RSP: 0018:ffffa29e404b4e70 EFLAGS: 00010282
Jul 06 08:44:48 surprise kernel: RAX: 0000000000000000 RBX: ffff943bca232600 RCX: 0000000000000000
Jul 06 08:44:48 surprise kernel: RDX: ffff943bccfe9020 RSI: ffff943bccfd8cd0 RDI: 0000000000000300
Jul 06 08:44:48 surprise kernel: RBP: ffffa29e404b4ea0 R08: 0000000000000545 R09: 0000000000000004
Jul 06 08:44:48 surprise kernel: R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
Jul 06 08:44:48 surprise kernel: R13: 0000000000000000 R14: ffff943bca938480 R15: ffff943bca938000
Jul 06 08:44:48 surprise kernel: FS: 0000000000000000(0000) GS:ffff943bccfc0000(0000) knlGS:0000000000000000
Jul 06 08:44:48 surprise kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jul 06 08:44:48 surprise kernel: CR2: 00007f507eb35160 CR3: 00000003d81f4000 CR4: 00000000003406e0
Jul 06 08:44:48 surprise kernel: Call Trace:
Jul 06 08:44:48 surprise kernel: <IRQ>
Jul 06 08:44:48 surprise kernel: ? pfifo_fast_enqueue+0x150/0x150
Jul 06 08:44:48 surprise kernel: call_timer_fn+0x32/0x130
Jul 06 08:44:48 surprise kernel: run_timer_softirq+0x19b/0x4d0
Jul 06 08:44:48 surprise kernel: ? lapic_next_event+0x21/0x30
Jul 06 08:44:48 surprise kernel: ? clockevents_program_event+0x8f/0xe0
Jul 06 08:44:48 surprise kernel: __do_softirq+0xe1/0x2d6
Jul 06 08:44:48 surprise kernel: asm_call_on_stack+0x12/0x20
Jul 06 08:44:48 surprise kernel: </IRQ>
Jul 06 08:44:48 surprise kernel: do_softirq_own_stack+0x3f/0x50
Jul 06 08:44:48 surprise kernel: irq_exit_rcu+0xa4/0xb0
Jul 06 08:44:48 surprise kernel: sysvec_apic_timer_interrupt+0x3b/0x90
Jul 06 08:44:48 surprise kernel: asm_sysvec_apic_timer_interrupt+0x12/0x20
Jul 06 08:44:48 surprise kernel: RIP: 0010:cpuidle_enter_state+0xca/0x3e0
Jul 06 08:44:48 surprise kernel: Code: ff e8 ea d9 79 ff 80 7d c7 00 74 17 9c 58 0f 1f 44 00 00 f6 c4 02 0f 85 e4 02 00 00 31 ff e8 bd 93 80 ff fb 66 0f 1f 44 00 00 <45> 85 e4 0f 88 39 02 00 00 49 63 d4 4c 8b 7d d0 4c 2b 7d c8 48 8d
Jul 06 08:44:48 surprise kernel: RSP: 0018:ffffa29e4019fe38 EFLAGS: 00000246
Jul 06 08:44:48 surprise kernel: RAX: ffff943bccfec6c0 RBX: ffff943bb94aa000 RCX: 000000000000001f
Jul 06 08:44:48 surprise kernel: RDX: 0000000000000000 RSI: 00000000239f52d0 RDI: 0000000000000000
Jul 06 08:44:48 surprise kernel: RBP: ffffa29e4019fe78 R08: 0000000853f1dacf R09: 0000000000000000
Jul 06 08:44:48 surprise kernel: R10: 000000000000000f R11: ffff943bccfeb364 R12: 0000000000000002
Jul 06 08:44:48 surprise kernel: R13: ffffffffb857a1a0 R14: 0000000000000002 R15: ffff943bb94aa000
Jul 06 08:44:48 surprise kernel: ? cpuidle_enter_state+0xa6/0x3e0
Jul 06 08:44:48 surprise kernel: cpuidle_enter+0x2e/0x40
Jul 06 08:44:48 surprise kernel: call_cpuidle+0x23/0x40
Jul 06 08:44:48 surprise kernel: do_idle+0x1e7/0x280
Jul 06 08:44:48 surprise kernel: cpu_startup_entry+0x20/0x30
Jul 06 08:44:48 surprise kernel: start_secondary+0x159/0x1a0
Jul 06 08:44:48 surprise kernel: secondary_startup_64+0xb6/0xc0
Jul 06 08:44:48 surprise kernel: ---[ end trace a6ce2f170ccf5aef ]---

I'm also seeing lines like this repeated every so often:

Jul 06 08:44:58 surprise kernel: r8169 0000:05:00.0 enp5s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).