我有一台 Intel NUC (NUC6i3SYB)，带有集成的 Intel 8260 wifi 接口 (rev 3a)，运行 Ubuntu 17.04 Server AMD64。wifi 接口使用 hostapd 设置为接入点。问题是 wifi 连接时不时会中断，不是因为信号质量差（系统距离我的笔记本电脑和手机 3 米远），而是因为在发送/接收流量时发生了一些奇怪的事情。我说的不是负载过重，即使你访问像亚马逊或类似的网页，连接也会中断，我的笔记本电脑或手机也会断开连接。当我查看 NUC 上的 dmesg 输出时，我收到此错误消息：
[ 90.846007] WARNING: CPU: 0 PID: 1345 at /build/linux-Fk60NP/linux-4.10.0/drivers/net/wireless/intel/iwlwifi/mvm/tx.c:507 iwl_mvm_tx_skb_non_sta+0x368/0x410 [iwlmvm]
[ 90.846009] Modules linked in: ftdi_sio usbserial ccm ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_conntrack iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter nls_iso8859_1 arc4 iwlmvm mac80211 8250_dw snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_skl snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core snd_soc_sst_match snd_soc_core snd_hda_codec_generic snd_compress intel_rapl ac97_bus x86_pkg_temp_thermal intel_powerclamp coretemp snd_pcm_dmaengine kvm_intel snd_hda_intel snd_hda_codec kvm snd_hda_core iwlwifi snd_hwdep snd_pcm irqbypass intel_cstate intel_rapl_perf cfg80211 snd_timer cdc_ether snd usbnet ir_lirc_codec ir_rc6_decoder soundcore lirc_dev joydev input_leds hci_uart btusb r8152 btrtl btbcm btqca btintel mii shpchp bluetooth mei_me
[ 90.846136] idma64 acpi_als mei virt_dma rc_rc6_mce intel_lpss_pci intel_pch_thermal kfifo_buf ite_cir mac_hid industrialio rc_core intel_lpss_acpi intel_lpss acpi_pad ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs algif_skcipher af_alg uas usb_storage dm_crypt raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc i915 aesni_intel aes_x86_64 crypto_simd glue_helper cryptd i2c_algo_bit drm_kms_helper e1000e syscopyarea sysfillrect sdhci_pci ptp sysimgblt fb_sys_fops ahci pps_core drm libahci sdhci video pinctrl_sunrisepoint i2c_hid pinctrl_intel hid fjes
[ 90.846288] CPU: 0 PID: 1345 Comm: hostapd Not tainted 4.10.0-19-generic #21-Ubuntu
[ 90.846292] Hardware name: /NUC6i3SYB, BIOS SYSKLi35.86A.0044.2016.0512.1734 05/12/2016
[ 90.846294] Call Trace:
[ 90.846309] dump_stack+0x63/0x81
[ 90.846317] __warn+0xcb/0xf0
[ 90.846324] warn_slowpath_null+0x1d/0x20
[ 90.846360] iwl_mvm_tx_skb_non_sta+0x368/0x410 [iwlmvm]
[ 90.846387] iwl_mvm_mac_tx+0x11e/0x1d0 [iwlmvm]
[ 90.846473] ieee80211_tx_frags+0x14d/0x220 [mac80211]
[ 90.846542] __ieee80211_tx+0x81/0x180 [mac80211]
[ 90.846612] ieee80211_tx+0x10f/0x150 [mac80211]
[ 90.846690] ieee80211_xmit+0x9c/0xf0 [mac80211]
[ 90.846742] __ieee80211_tx_skb_tid_band+0x5c/0x70 [mac80211]
[ 90.846790] ieee80211_mgmt_tx+0x432/0x4b0 [mac80211]
[ 90.846849] cfg80211_mlme_mgmt_tx+0xd8/0x2b0 [cfg80211]
[ 90.846896] nl80211_tx_mgmt+0x223/0x380 [cfg80211]
[ 90.846908] genl_family_rcv_msg+0x1dd/0x3c0
[ 90.846918] ? skb_queue_tail+0x43/0x50
[ 90.846924] ? __netlink_sendskb+0x3e/0x60
[ 90.846932] genl_rcv_msg+0x59/0xa0
[ 90.846938] ? genl_register_family+0x620/0x620
[ 90.846944] netlink_rcv_skb+0xa4/0xc0
[ 90.846949] genl_rcv+0x28/0x40
[ 90.846955] netlink_unicast+0x18c/0x220
[ 90.846961] netlink_sendmsg+0x2f7/0x3b0
[ 90.846970] ? aa_sock_msg_perm+0x61/0x150
[ 90.846976] sock_sendmsg+0x38/0x50
[ 90.846982] ___sys_sendmsg+0x2c2/0x2d0
[ 90.846993] ? mem_cgroup_commit_charge+0x7e/0x510
[ 90.847003] ? lru_cache_add_active_or_unevictable+0x36/0xb0
[ 90.847010] __sys_sendmsg+0x54/0x90
[ 90.847017] SyS_sendmsg+0x12/0x20
[ 90.847025] entry_SYSCALL_64_fastpath+0x1e/0xad
[ 90.847029] RIP: 0033:0x7f38b91ae237
[ 90.847033] RSP: 002b:00007ffd1aebfd58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 90.847039] RAX: ffffffffffffffda RBX: 00007f38b9466b58 RCX: 00007f38b91ae237
[ 90.847042] RDX: 0000000000000000 RSI: 00007ffd1aebfd90 RDI: 0000000000000005
[ 90.847045] RBP: 00007f38b9466b00 R08: 0000000000000000 R09: 0000000000000000
[ 90.847048] R10: 0000558c24284bc0 R11: 0000000000000246 R12: 00007f38b9466b58
[ 90.847051] R13: 0000000000004010 R14: 00007f38b9466b58 R15: 000000000000270f
[ 90.847055] ---[ end trace 0b40a0c2dc41b9dd ]---
我已经尝试过将所有可能缺失的英特尔固件文件放入 /lib/firmware 中来改善这种情况，但这没有帮助，现在我已经没有主意了。在研究这个问题的过程中，我看到了很多关于这个问题的投诉，但我还没有找到解决办法。有什么想法吗？
问题出现得并不规律，有时我可以使用 wifi 10 分钟，然后突然连接中断并产生上述错误。然后我需要禁用、等待几秒钟，然后重新启用笔记本电脑或 Android 手机上的 wifi 才能重新获得连接。
更新：根据要求，这里还有更多输出：
$ dmesg | grep iwl
[ 80.760481] iwlwifi 0000:01:00.0: enabling device (0000 -> 0002)
[ 80.798983] iwlwifi 0000:01:00.0: Direct firmware load for iwlwifi-8000C-26.ucode failed with error -2
[ 80.799277] iwlwifi 0000:01:00.0: Direct firmware load for iwlwifi-8000C-25.ucode failed with error -2
[ 80.799569] iwlwifi 0000:01:00.0: Direct firmware load for iwlwifi-8000C-24.ucode failed with error -2
[ 80.799863] iwlwifi 0000:01:00.0: Direct firmware load for iwlwifi-8000C-23.ucode failed with error -2
[ 81.056948] iwlwifi 0000:01:00.0: loaded firmware version 22.391740.0 op_mode iwlmvm
[ 81.164325] iwlwifi 0000:01:00.0: Detected Intel(R) Dual Band Wireless AC 8260, REV=0x208
[ 81.166714] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 81.167661] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 81.309925] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[ 81.313046] iwlwifi 0000:01:00.0 wlp1s0: renamed from wlan0
[ 81.509457] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 81.509820] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 81.647630] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 81.648398] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 82.065513] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 82.066461] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 82.203449] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 82.203759] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 90.846007] WARNING: CPU: 0 PID: 1345 at /build/linux-Fk60NP/linux-4.10.0/drivers/net/wireless/intel/iwlwifi/mvm/tx.
:507 iwl_mvm_tx_skb_non_sta+0x368/0x410 [iwlmvm]
[ 90.846009] Modules linked in: ftdi_sio usbserial ccm ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_conntrack iptable_nat
nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter nls_iso8859_1 arc4 iwlmvm mac80211 8250
dw snd_hda_codec_hdmi snd_hda_codec_realtek snd_soc_skl snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_cor
snd_soc_sst_match snd_soc_core snd_hda_codec_generic snd_compress intel_rapl ac97_bus x86_pkg_temp_thermal intel_power
lamp coretemp snd_pcm_dmaengine kvm_intel snd_hda_intel snd_hda_codec kvm snd_hda_core iwlwifi snd_hwdep snd_pcm irqbyp
ss intel_cstate intel_rapl_perf cfg80211 snd_timer cdc_ether snd usbnet ir_lirc_codec ir_rc6_decoder soundcore lirc_dev
joydev input_leds hci_uart btusb r8152 btrtl btbcm btqca btintel mii shpchp bluetooth mei_me
[ 90.846360] iwl_mvm_tx_skb_non_sta+0x368/0x410 [iwlmvm]
[ 90.846387] iwl_mvm_mac_tx+0x11e/0x1d0 [iwlmvm]