Bug 637612
| Summary: | iwlagn ucode SW error, SYSASSERT and WARNING: at net/wireless/core.c:633 wdev_cleanup_work | ||||||
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| Product: | [Fedora] Fedora | Reporter: | James <james> | ||||
| Component: | kernel | Assignee: | Stanislaw Gruszka <sgruszka> | ||||
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | 14 | CC: | aquini, balay, christopherthe1, dougsland, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, mathieu-acct, sgruszka, yaroslav.sapozhnik | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2011-01-24 14:17:57 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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In the past using swcrypto=1 module option helps with "Microcode SW error detected". To recover from that situation, reloading iwlagn and iwlcore modules are needed. Regarding warning in wdev_cleanup_work, some work is currently done in upstream kernel to prevent that. I'm going to backport it to F-14 kernel. (In reply to comment #1) > In the past using swcrypto=1 module option helps with "Microcode SW error > detected". > > To recover from that situation, reloading iwlagn and iwlcore modules are > needed. In the case reported, swcrypto=1 was set in /etc/modprobe.d/local.conf. Recovery was, as you said, reloading iwlagn. Seeing the same error on my laptop (Lenovo W500) using F14 kernel 2.6.35.10-74.fc14.x86_64 The swcrypto=1 workaround had no effect. The same error on Lenovo T500 using F14. Kernel is 2.6.35.10-74.fc14.x86_64. wdev_cleanup_work problem is solved in 2.6.37. You can use upstream wireless drivers using compat-wireless http://people.redhat.com/sgruszka/compat_wireless.html . Regarding Microcode error, this is generally a firmware problem (or driver do something that kill firmware). This can be only fixed by Intel. If you still have this on upstream driver report problem to http://bugzilla.intellinuxwireless.org/ as described in http://intellinuxwireless.org/?n=fw_error_report (In reply to comment #1) > Regarding warning in wdev_cleanup_work, some work is currently done in upstream > kernel to prevent that. I'm going to backport it to F-14 kernel. I'll will not backport. There was a lot of changes in iwlwifi driver between 2.6.35 and 2.6.37, that make backport very hard. You can use compat-wireless. I'm working to provide that packages in regular manner via yum repo. Closing as WONTFIX. |
Created attachment 449768 [details] dmesg output showing the incident Description of problem: Was using notebook normally when my AP failed, so I switched to another. Also ran a few scans using "iw dev wlan0 scan". Then I had no connection and checked dmesg, whereupon I found iwlagn 0000:02:00.0: Aborted scan still in progress after 100ms wlan0: deauthenticating from 00:1f:9f:42:84:bd by local choice (reason=3) iwlagn 0000:02:00.0: Microcode SW error detected. Restarting 0x82000000. iwlagn 0000:02:00.0: Loaded firmware version: 228.61.2.24 iwlagn 0000:02:00.0: Start IWL Error Log Dump: iwlagn 0000:02:00.0: Status: 0x0002B3E4, count: 5 iwlagn 0000:02:00.0: Desc Time data1 data2 line iwlagn 0000:02:00.0: SYSASSERT (#05) 3934265523 0x00000000 0x00000000 1121 plus a dump (see attached dmesg output). I then reloaded iwlagn, and this appeared: ------------[ cut here ]------------ WARNING: at net/wireless/core.c:633 wdev_cleanup_work+0x52/0xbb [cfg80211]() Hardware name: M720R Modules linked in: ppp_mppe ppp_async crc_ccitt ppp_generic slhc aes_x86_64 aes_generic hidp fuse ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat rfcomm sco bridge stp llc bnep l2cap coretemp cpufreq_ondemand acpi_cpufreq freq_table mperf xt_physdev ip6t_REJECT nf_conntrack_ipv6 ip6table_filter ip6_tables ipv6 kvm_intel kvm uinput snd_hda_codec_si3054 arc4 snd_hda_codec_realtek ecb snd_hda_intel iwlagn(-) snd_hda_codec iwlcore mac80211 snd_hwdep snd_seq uvcvideo iTCO_wdt snd_seq_device snd_pcm sdhci_pci snd_timer snd videodev v4l1_compat btusb sdhci mmc_core wmi r8169 mii v4l2_compat_ioctl32 iTCO_vendor_support cfg80211 serio_raw i2c_i801 soundcore bluetooth snd_page_alloc joydev rfkill microcode firewire_ohci firewire_core crc_itu_t uhci_hcd i915 drm_kms_helper drm i2c_algo_bit i2c_core video output [last unloaded: scsi_wait_scan] Pid: 783, comm: cfg80211 Not tainted 2.6.35.5-rhapsody.fc14.i915pp.noecd-229 #1 Call Trace: [<ffffffff81048d36>] warn_slowpath_common+0x80/0x98 [<ffffffff81048d63>] warn_slowpath_null+0x15/0x17 [<ffffffffa01ae58e>] wdev_cleanup_work+0x52/0xbb [cfg80211] [<ffffffff8105df4d>] worker_thread+0x1d3/0x27a [<ffffffffa01ae53c>] ? wdev_cleanup_work+0x0/0xbb [cfg80211] [<ffffffff81061dff>] ? autoremove_wake_function+0x0/0x34 [<ffffffff8143d085>] ? _raw_spin_unlock_irqrestore+0x3c/0x3e [<ffffffff8105dd7a>] ? worker_thread+0x0/0x27a [<ffffffff8106192f>] kthread+0x7a/0x82 [<ffffffff8100a9e4>] kernel_thread_helper+0x4/0x10 [<ffffffff810618b5>] ? kthread+0x0/0x82 [<ffffffff8100a9e0>] ? kernel_thread_helper+0x0/0x10 ---[ end trace cc43b0bac39c24f6 ]--- This using a kernel built from Fedora 14 sources, kernel-2.6.35.5-30.fc14. Version-Release number of selected component (if applicable): kernel-2.6.35.5-30.fc14 iwl4965-firmware-228.61.2.24-2.fc12.noarch How reproducible: Unknown.