这是一个新的 Debian 10 安装，已经有两三周了。
在过去的几天里，我的系统一直在运行，它只会变慢，而且我无法sudo在终端中使用，因为它不会提示进行身份验证。当我使用检查CPU使用率时htop，它显示systemd-journaldCPU使用率相当高，超过100%。有一次，有两三个进程/线程，rsyslogd每个进程/线程使用了大约 50% 的 CPU。rsyslogd此后我再也没有见过使用那么多CPU。
由于我无法使用sudo，我无法检查日志，但今天我发现我可以在不工作su时成为 root ，并且我检查了日志。sudo
以下是摘录journalctl：
Aug 25 22:27:34 asgard systemd-journald[2471]: Missed 51 kernel messages
Aug 25 22:27:34 asgard kernel: wlp0s20f3: Failed check-sdata-in-driver check, flags: 0x4
Aug 25 22:27:34 asgard kernel: WARNING: CPU: 0 PID: 2221 at net/mac80211/driver-ops.h:19 drv_sta_state+0x265/0x3e0 [mac80211]
Aug 25 22:27:34 asgard systemd-journald[2471]: Missed 56 kernel messages
Aug 25 22:27:34 asgard kernel: drbg ansi_cprng cfg80211 dell_rbtn processor_thermal_device iTCO_vendor_support irqbypass intel_soc_dts_iosf ecdh_generic sg joydev dell_laptop hid_multitouch idma64 crct10dif_pclmul crc32_pclmul int3403_thermal rfkill int3400_thermal int340x_thermal_zone wmi_bmof dell_smo8800 dell_wmi intel_hid pcc_cpufreq dell_smbios dell_smm_hwmon dcdbas intel_pch_thermal ucsi_acpi typec_ucsi dell_wmi_descriptor typec acpi_thermal_rel evdev sparse_keymap pcspkr serio_raw ghash_clmulni_intel acpi_tad acpi_pad ac intel_cstate intel_uncore xt_conntrack nft_compat intel_rapl_perf efi_pstore efivars battery nft_counter nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink efivarfs ip_tables x_tables autofs4 ext4
以下部分journalctl遍布整个日志：
Aug 25 22:27:34 asgard systemd-journald[2471]: Missed 55 kernel messages
Aug 25 22:27:34 asgard kernel: crc16 mbcache jbd2 fscrypto ecb btrfs xor zstd_decompress zstd_compress xxhash raid6_pq libcrc32c crc32c_generic sd_mod hid_generic crc32c_intel i2c_designware_platform i2c_designware_core i915 psmouse aesni_intel xhci_pci aes_x86_64 crypto_simd xhci_hcd cryptd glue_helper i2c_i801 ahci libahci libata i2c_algo_bit usbcore r8169 drm_kms_helper realtek sdhci_pci libphy cqhci scsi_mod sdhci drm mmc_core intel_lpss_pci intel_lpss mfd_core usb_common i2c_hid hid wmi video button
从dmesg：
[ 2420.057787] wlp0s20f3: Failed check-sdata-in-driver check, flags: 0x4
[ 2420.057800] Modules linked in: uinput cmac rfcomm bnep ctr ccm fuse binfmt_misc nf_log_ipv6 ip6t_REJECT nf_reject_ipv6 nls_ascii snd_soc_skl nls_cp437 vfat fat xt_hl ip6_tables ip6t_rt snd_hda_codec_hdmi snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi nf_log_ipv4 snd_hda_codec_realtek nf_log_common snd_soc_core snd_hda_codec_generic ipt_REJECT nf_reject_ipv4 snd_compress xt_LOG snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm uvcvideo intel_rapl snd_timer snd x86_pkg_temp_thermal intel_powerclamp nft_limit coretemp videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common kvm_intel videodev iTCO_wdt soundcore xt_limit arc4 media iwlmvm mac80211 btusb btrtl btbcm btintel bluetooth xt_addrtype kvm iwlwifi xt_tcpudp mei_me mei
[ 2420.057845] RSP: 0018:ffffbfd40269f9b0 EFLAGS: 00010282
[ 2420.057850] FS: 0000000000000000(0000) GS:ffff9f0f26200000(0000) knlGS:0000000000000000
[ 2420.057879] __sta_info_flush+0x15e/0x1c0 [mac80211]
[ 2420.057892] ieee80211_set_disassoc+0xbe/0x550 [mac80211]
[ 2420.057903] ieee80211_mgd_deauth.cold.57+0x47/0x1b5 [mac80211]
[ 2420.057914] cfg80211_mlme_deauth+0xb3/0x1d0 [cfg80211]
[ 2420.057926] cfg80211_mlme_down+0x66/0x90 [cfg80211]
[ 2420.057937] cfg80211_disconnect+0x128/0x1e0 [cfg80211]
[ 2420.057946] cfg80211_leave+0x26/0x40 [cfg80211]
[ 2420.057954] cfg80211_netdev_notifier_call+0xcd/0x600 [cfg80211]
[ 2420.057956] ? syscall_return_via_sysret+0x14/0x83
[ 2420.057957] ? ret_from_fork+0x1a/0x40
[ 2420.057970] ? ieee80211_reconfig+0xd5/0x1420 [mac80211]
[ 2420.057984] ? report_bug+0xb0/0xd0
[ 2420.057985] ? inetdev_event+0x46/0x580
[ 2420.057988] notifier_call_chain+0x47/0x70
[ 2420.057992] dev_close_many+0x9f/0x160
[ 2420.058002] cfg80211_shutdown_all_interfaces+0x6d/0xc0 [cfg80211]
[ 2420.058015] ? rcu_exp_wait_wake+0x250/0x250
[ 2420.058016] ? try_to_del_timer_sync+0x4d/0x80
[ 2420.058028] process_one_work+0x1a7/0x3a0
[ 2420.058030] worker_thread+0x30/0x390
[ 2420.058031] ? create_worker+0x1a0/0x1a0
[ 2420.058035] ? kthread_bind+0x30/0x30
[ 2420.058043] ------------[ cut here ]------------
[ 2420.058056] Modules linked in: uinput cmac rfcomm bnep ctr ccm fuse binfmt_misc nf_log_ipv6 ip6t_REJECT nf_reject_ipv6 nls_ascii snd_soc_skl nls_cp437 vfat fat xt_hl ip6_tables ip6t_rt snd_hda_codec_hdmi snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi nf_log_ipv4 snd_hda_codec_realtek nf_log_common snd_soc_core snd_hda_codec_generic ipt_REJECT nf_reject_ipv4 snd_compress xt_LOG snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm uvcvideo intel_rapl snd_timer snd x86_pkg_temp_thermal intel_powerclamp nft_limit coretemp videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common kvm_intel videodev iTCO_wdt soundcore xt_limit arc4 media iwlmvm mac80211 btusb btrtl btbcm btintel bluetooth xt_addrtype kvm iwlwifi xt_tcpudp mei_me mei
[ 2420.058101] RSP: 0018:ffffbfd40269f9b0 EFLAGS: 00010282
[ 2420.058107] FS: 0000000000000000(0000) GS:ffff9f0f26200000(0000) knlGS:0000000000000000
[ 2420.058136] __sta_info_flush+0x15e/0x1c0 [mac80211]
[ 2420.058147] ieee80211_set_disassoc+0xbe/0x550 [mac80211]
[ 2420.058159] ieee80211_mgd_deauth.cold.57+0x47/0x1b5 [mac80211]
[ 2420.058170] cfg80211_mlme_deauth+0xb3/0x1d0 [cfg80211]
[ 2420.058181] cfg80211_mlme_down+0x66/0x90 [cfg80211]
[ 2420.058193] cfg80211_disconnect+0x128/0x1e0 [cfg80211]
[ 2420.058202] cfg80211_leave+0x26/0x40 [cfg80211]
[ 2420.058210] cfg80211_netdev_notifier_call+0xcd/0x600 [cfg80211]
[ 2420.058212] ? syscall_return_via_sysret+0x14/0x83
[ 2420.058213] ? ret_from_fork+0x1a/0x40
[ 2420.058238] ? ieee80211_reconfig+0xd5/0x1420 [mac80211]
[ 2420.058240] ? report_bug+0xb0/0xd0
[ 2420.058241] ? inetdev_event+0x46/0x580
[ 2420.058245] notifier_call_chain+0x47/0x70
[ 2420.058248] dev_close_many+0x9f/0x160
[ 2420.058269] ieee80211_reconfig+0xa3/0x1420 [mac80211]
[ 2420.058271] ? rcu_exp_wait_wake+0x250/0x250
[ 2420.058272] ? try_to_del_timer_sync+0x4d/0x80
[ 2420.058285] worker_thread+0x30/0x390
[ 2420.058288] kthread+0x112/0x130
[ 2420.058291] ret_from_fork+0x1f/0x40
[ 2420.058298] ------------[ cut here ]------------
与消息类似journalctl，上述日志dmesg也在dmesg. （我认为这些dmesg日志是在系统挂起时尝试关闭系统时显示的，但我无法确定，因为消息正在快速移动。）
我认为速度减慢是由于/var/log/kern.log、/var/log/messages和/var/log/syslog每个大约 23GB 的日志记录过多造成的。
我不确定是什么导致了这么多错误/日志，但我怀疑是笔记本电脑的 Wi-Fi 问题。 WiFi 芯片是一个Intel® Wireless-AC 9560，我在使用 wifi 时遇到了一些连接问题。 （wifi会突然断开连接，网络管理器会显示device is not ready。当我重新启动时，wifi选项从网络管理器中消失。这种情况已经发生了两次，将其切换Secure Boot到UEFI即可OFF/ON修复它。）
当系统变慢时，我没有注意到 wifi 有任何问题。
- 这是 Askubuntu 的另一个相关问题：https://askubuntu.com/questions/1251908/syslog-and-kern-log-keeps-filling-up-and-network-stops-working
- 红帽的错误报告：https://bugzilla.redhat.com/show_bug.cgi?id=1851185
- Ubuntu 错误报告：https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1882419/comments/12
- 来自 Linux 内核的错误报告：https://bugzilla.kernel.org/show_bug.cgi?id=98321
这里究竟发生了什么以及如何解决这个问题？
答案1
我也遇到了这个问题，并经常检查是否有回应。截至9月26日更新，该问题似乎已得到解决。