Patient has 00:14.3 Network controller [0280]: Intel Corporation Cannon Point-LP CNVi [Wireless-AC] [8086:9df0] (rev 11) Patient and doctor computers are running kernel 5.16.8-200.fc35.x86_64 Command is # modprobe netconsole netconsole=4444@10.0.0.85/wlp0s20f3,6666@10.0.0.249/b8:ae:ed:77:ea:51 And I get a WARNING on the patient, and no messages are received on the doctor. Reverse direction works OK. [15937.049105] netpoll: netconsole: local port 4444 [15937.049120] netpoll: netconsole: local IPv4 address 10.0.0.85 [15937.049127] netpoll: netconsole: interface 'wlp0s20f3' [15937.049131] netpoll: netconsole: remote port 6666 [15937.049135] netpoll: netconsole: remote IPv4 address 10.0.0.249 [15937.049139] netpoll: netconsole: remote ethernet address b8:ae:ed:77:ea:51 [15937.049360] ------------[ cut here ]------------ [15937.049363] WARNING: CPU: 7 PID: 12965 at net/mac80211/tx.c:3638 ieee80211_tx_dequeue+0xc91/0xcf0 [mac80211] [15937.049487] Modules linked in: netconsole(+) loop vhost_net vhost vhost_iotlb tap tun xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp bridge stp llc uinput rfcomm snd_seq_dummy snd_hrtimer nft_objref nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter qrtr bnep vfat fat snd_ctl_led snd_soc_skl_hda_dsp snd_soc_intel_hda_dsp_common snd_soc_hdac_hdmi snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_soc_dmic snd_sof_pci_intel_cnl 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 [15937.049574] snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core intel_tcc_cooling snd_compress x86_pkg_temp_thermal intel_powerclamp ac97_bus coretemp snd_pcm_dmaengine kvm_intel mei_wdt iTCO_wdt intel_pmc_bxt iTCO_vendor_support mei_hdcp snd_hda_intel iwlmvm mei_pxp intel_rapl_msr snd_intel_dspcfg snd_intel_sdw_acpi mac80211 snd_hda_codec kvm snd_hda_core libarc4 irqbypass snd_hwdep rapl btusb snd_seq intel_cstate btrtl intel_uncore uvcvideo snd_seq_device iwlwifi btbcm videobuf2_vmalloc snd_pcm btintel videobuf2_memops think_lmi wmi_bmof intel_wmi_thunderbolt i2c_i801 videobuf2_v4l2 firmware_attributes_class processor_thermal_device_pci_legacy bluetooth i2c_smbus snd_timer thunderbolt videobuf2_common cfg80211 processor_thermal_device processor_thermal_rfim processor_thermal_mbox videodev thinkpad_acpi processor_thermal_rapl mei_me ledtrig_audio intel_rapl_common platform_profile ecdh_generic joydev mei [15937.049656] idma64 mc rfkill intel_soc_dts_iosf intel_pch_thermal snd int3403_thermal soundcore int340x_thermal_zone int3400_thermal acpi_tad acpi_thermal_rel acpi_pad zram ip_tables i915 hid_multitouch i2c_algo_bit ttm drm_kms_helper cec crct10dif_pclmul crc32_pclmul drm nvme e1000e crc32c_intel ghash_clmulni_intel nvme_core serio_raw ucsi_acpi typec_ucsi typec wmi i2c_hid_acpi i2c_hid video pinctrl_cannonlake ipmi_devintf ipmi_msghandler fuse [15937.049703] CPU: 7 PID: 12965 Comm: modprobe Not tainted 5.16.8-200.fc35.x86_64 #1 [15937.049711] Hardware name: LENOVO 20QDS3E200/20QDS3E200, BIOS N2HET66W (1.49 ) 11/10/2021 [15937.049714] RIP: 0010:ieee80211_tx_dequeue+0xc91/0xcf0 [mac80211] [15937.049809] Code: d6 e8 83 28 3a d1 48 85 c0 0f 84 f1 f7 ff ff 41 0f b7 87 b4 00 00 00 49 03 87 c0 00 00 00 e9 9e fc ff ff 0f 0b e9 da f7 ff ff <0f> 0b e9 a5 f3 ff ff f0 41 80 4e f8 08 e9 70 f8 ff ff 4d 89 fc e9 [15937.049814] RSP: 0018:ffff95f305ee3938 EFLAGS: 00010046 [15937.049820] RAX: 0000000080000002 RBX: ffff8a2d81a5e0f0 RCX: 0000000000000001 [15937.049824] RDX: ffff8a2f67ae0000 RSI: ffff8a2d81a5e0f0 RDI: ffff8a2c9dde8840 [15937.049827] RBP: ffff8a2d81a5e000 R08: 0000000000000000 R09: ffff8a2c9dde8900 [15937.049830] R10: ffff8a2d91d06060 R11: ffff8a2c9dde8840 R12: ffff8a2c9dde8840 [15937.049833] R13: ffff8a2c9ddea040 R14: ffff8a2d81a5e0f0 R15: ffff8a2c9ddea048 [15937.049837] FS: 00007f870ac1f740(0000) GS:ffff8a2fee9c0000(0000) knlGS:0000000000000000 [15937.049842] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [15937.049846] CR2: 00005612d88a5000 CR3: 000000010ad14002 CR4: 00000000003706e0 [15937.049850] Call Trace: [15937.049856] <TASK> [15937.049863] ? get_partial_node.part.0+0x1a2/0x200 [15937.049875] ? ktime_get_with_offset+0x4c/0xc0 [15937.049885] ? _raw_spin_lock_bh+0x13/0x30 [15937.049894] iwl_mvm_mac_itxq_xmit+0x65/0xe0 [iwlmvm] [15937.049930] ieee80211_queue_skb+0x4a6/0x710 [mac80211] [15937.050025] __ieee80211_subif_start_xmit+0xbde/0xe70 [mac80211] [15937.050120] ieee80211_subif_start_xmit+0x3b/0x2e0 [mac80211] [15937.050204] ? __kmalloc_node_track_caller+0x177/0x390 [15937.050212] ? netpoll_send_udp+0x99/0x3f0 [15937.050221] netpoll_start_xmit+0x111/0x1a0 [15937.050227] netpoll_send_skb+0x16b/0x280 [15937.050234] write_msg+0xd8/0xf0 [netconsole] [15937.050246] console_unlock+0x329/0x4b0 [15937.050260] register_console+0x148/0x220 [15937.050268] init_netconsole+0x20e/0x1000 [netconsole] [15937.050279] ? 0xffffffffc15e6000 [15937.050283] do_one_initcall+0x41/0x200 [15937.050294] ? kmem_cache_alloc_trace+0x163/0x2c0 [15937.050302] do_init_module+0x5c/0x280 [15937.050308] __do_sys_init_module+0x11d/0x180 [15937.050318] do_syscall_64+0x38/0x90 [15937.050326] entry_SYSCALL_64_after_hwframe+0x44/0xae [15937.050333] RIP: 0033:0x7f870ad3692e [15937.050339] Code: 48 8b 0d fd 74 0e 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 af 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ca 74 0e 00 f7 d8 64 89 01 48 [15937.050343] RSP: 002b:00007ffcb68727a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000af [15937.050350] RAX: ffffffffffffffda RBX: 00005612d888dda0 RCX: 00007f870ad3692e [15937.050353] RDX: 00005612d888db50 RSI: 0000000000009c66 RDI: 00005612d889c510 [15937.050357] RBP: 00005612d889c510 R08: 00005612d888e050 R09: 0000000000008010 [15937.050360] R10: 0000000000000005 R11: 0000000000000246 R12: 00005612d888db50 [15937.050363] R13: 00005612d888deb0 R14: 00005612d888dda0 R15: 00005612d888e000 [15937.050371] </TASK> [15937.050372] ---[ end trace bd15abbb81b882d3 ]--- [15937.103862] printk: console [netcon0] enabled [15937.103881] netconsole: network logging started Downstream bug https://bugzilla.redhat.com/show_bug.cgi?id=2052823 -- Chris Murphy
