Bug 15119
| Summary: | iwl_bg_scan_completed: WARN on scan complete | ||
|---|---|---|---|
| Product: | Networking | Reporter: | Alex Zhavnerchik (alex.vizor) |
| Component: | Wireless | Assignee: | Reinette Chatre (reinette.chatre) |
| Status: | CLOSED CODE_FIX | ||
| Severity: | normal | CC: | alan, linville, reinette.chatre, rjw |
| Priority: | P1 | ||
| Hardware: | x86-64 | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.33-rc5 | Subsystem: | |
| Regression: | Yes | Bisected commit-id: | |
| Bug Depends on: | |||
| Bug Blocks: | 14885 | ||
| Attachments: |
kernel and wicd logs
Fix deferred scan requests |
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Description
Alex Zhavnerchik
2010-01-24 12:27:11 UTC
Your report title says "iwl_bg_scan_completed: sleeping under locks" - what does the warning you copied into your description have to do with sleeping under locks? Misread the trace A few questions: - Are there any errors or driver log messages before this trace? - How do you trigger this trace? Is it easy to reproduce? Do you see it often? If this is easy to reproduce, could you load driver with debugging (modprobe iwlagn debug=0x43fff)? - Which userspace application are you using to manage your wireless connection? Could it be doing something to trigger this? Is it possible to add some debugging (with timestamps) to coordinate what the application and kernel is doing? Created attachment 24714 [details]
kernel and wicd logs
Hi. Before this warning I see: Jan 10 02:35:10 loki kernel: [ 1786.204947] btusb_intr_complete: hci0 urb ffff88007d3159c0 failed to resubmit (19) Jan 10 02:35:10 loki kernel: [ 1786.204955] btusb_bulk_complete: hci0 urb ffff88007d154680 failed to resubmit (19) Jan 10 02:35:10 loki kernel: [ 1786.205955] btusb_bulk_complete: hci0 urb ffff88007d154740 failed to resubmit (19) Jan 10 02:35:10 loki kernel: [ 1786.206100] btusb_send_frame: hci0 urb ffff88007ba7eec0 submission failed Jan 10 02:35:11 loki kernel: [ 1787.811400] mac80211-phy0: failed to remove key (0, 00:13:49:e1:cd:82) from hardware (-22) Jan 10 02:35:11 loki kernel: [ 1787.811420] wlan0: deauthenticating from 00:13:49:e1:cd:82 by local choice (reason=3) Jan 10 02:35:12 loki kernel: [ 1788.101914] ADDRCONF(NETDEV_UP): wlan0: link is not ready Jan 10 02:35:12 loki kernel: [ 1788.103128] wlan0: direct probe to AP 00:13:49:e1:cd:82 (try 1) Jan 10 02:35:12 loki kernel: [ 1788.105746] wlan0: direct probe responded Jan 10 02:35:12 loki kernel: [ 1788.105755] wlan0: authenticate with AP 00:13:49:e1:cd:82 (try 1) Jan 10 02:35:12 loki kernel: [ 1788.107722] wlan0: authenticated Jan 10 02:35:12 loki kernel: [ 1788.107758] wlan0: associate with AP 00:13:49:e1:cd:82 (try 1) Jan 10 02:35:12 loki kernel: [ 1788.109613] wlan0: RX ReassocResp from 00:13:49:e1:cd:82 (capab=0x411 status=1 aid=0) Jan 10 02:35:12 loki kernel: [ 1788.109620] wlan0: AP denied association (code=1) Jan 10 02:35:12 loki kernel: [ 1788.109644] wlan0: associate with AP 00:13:49:e1:cd:82 (try 1) Jan 10 02:35:12 loki kernel: [ 1788.111714] wlan0: RX ReassocResp from 00:13:49:e1:cd:82 (capab=0x411 status=1 aid=0) Jan 10 02:35:12 loki kernel: [ 1788.111721] wlan0: AP denied association (code=1) Jan 10 02:35:12 loki kernel: [ 1788.111743] wlan0: deauthenticating from 00:13:49:e1:cd:82 by local choice (reason=3) Jan 10 02:35:12 loki kernel: [ 1788.366927] e1000e 0000:00:19.0: irq 30 for MSI/MSI-X Jan 10 02:35:12 loki kernel: [ 1788.417406] e1000e 0000:00:19.0: irq 30 for MSI/MSI-X Jan 10 02:35:12 loki kernel: [ 1788.417816] ADDRCONF(NETDEV_UP): eth0: link is not ready Jan 10 02:35:12 loki kernel: [ 1788.489985] Monitor-Mwait will be used to enter C-3 state Jan 10 02:35:12 loki kernel: [ 1788.701366] ------------[ cut here ]------------ Jan 10 02:35:12 loki kernel: [ 1788.701409] WARNING: at net/mac80211/scan.c:309 ieee80211_scan_completed+0x44/0x1e9 [mac80211]() Jan 10 02:35:12 loki kernel: [ 1788.701415] Hardware name: 64608SG Jan 10 02:35:12 loki kernel: [ 1788.701419] Modules linked in: sco bridge stp bnep rfcomm l2cap vboxnetadp vboxnetflt autofs4 acpi_cpufreq cpufreq_conservative cpufreq_userspace cpufreq_powersave cpufreq_stats uinput cryptd aes_x86_64 aes_generic microcode fuse vboxdrv firewire _sbp2 loop snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm thinkpad_acpi snd_seq_midi snd_rawm idi snd_seq_midi_event snd_seq arc4 snd_timer ecb iwlagn snd_seq_device snd pcmcia btusb iwlcore mac80211 cfg80211 video nvram bluetooth pr ocessor i2c_i801 yenta_socket pcspkr rsrc_nonstatic output pcmcia_core wmi button joydev battery soundcore evdev snd_page_alloc rfkill psmo use serio_raw ac ext4 mbcache jbd2 crc16 ide_cd_mod cdrom sd_mod ata_generic crc_t10dif ata_piix ide_pci_generic firewire_ohci ahci uhci_hc d sdhci_pci sdhci piix libata ricoh_mmc firewire_core crc_itu_t mmc_core led_class ehci_hcd ide_core scsi_mod e1000e intel_agp thermal fan thermal_sys nouveau ttm drm_kms_helper drm i2c_algo_ Jan 10 02:35:12 loki kernel: bit [last unloaded: scsi_wait_scan] Jan 10 02:35:12 loki kernel: [ 1788.701619] Pid: 1274, comm: iwlagn Not tainted 2.6.33-rc3 #1 Jan 10 02:35:12 loki kernel: [ 1788.701624] Call Trace: Jan 10 02:35:12 loki kernel: [ 1788.701641] [<ffffffff8103c0cc>] warn_slowpath_common+0x77/0x8f Jan 10 02:35:12 loki kernel: [ 1788.701651] [<ffffffff8103c0f3>] warn_slowpath_null+0xf/0x11 Jan 10 02:35:12 loki kernel: [ 1788.701671] [<ffffffffa042e737>] ieee80211_scan_completed+0x44/0x1e9 [mac80211] Jan 10 02:35:12 loki kernel: [ 1788.701700] [<ffffffffa04632b0>] iwl_bg_scan_completed+0x3a/0x75 [iwlcore] Jan 10 02:35:12 loki kernel: [ 1788.701711] [<ffffffff81051acb>] worker_thread+0x1a4/0x232 Jan 10 02:35:12 loki kernel: [ 1788.701737] [<ffffffffa0463276>] ? iwl_bg_scan_completed+0x0/0x75 [iwlcore] Jan 10 02:35:12 loki kernel: [ 1788.701748] [<ffffffff81055683>] ? autoremove_wake_function+0x0/0x34 Jan 10 02:35:12 loki kernel: [ 1788.701759] [<ffffffff8102d0b7>] ? spin_unlock_irqrestore+0x9/0xb Jan 10 02:35:12 loki kernel: [ 1788.701768] [<ffffffff81051927>] ? worker_thread+0x0/0x232 Jan 10 02:35:12 loki kernel: [ 1788.701776] [<ffffffff81055237>] kthread+0x7a/0x82 Jan 10 02:35:12 loki kernel: [ 1788.701786] [<ffffffff81003824>] kernel_thread_helper+0x4/0x10 Jan 10 02:35:12 loki kernel: [ 1788.701795] [<ffffffff810551bd>] ? kthread+0x0/0x82 Jan 10 02:35:12 loki kernel: [ 1788.701803] [<ffffffff81003820>] ? kernel_thread_helper+0x0/0x10 Jan 10 02:35:12 loki kernel: [ 1788.701809] ---[ end trace 71a2f6ddb201d12d ]--- Jan 10 02:35:12 loki kernel: [ 1788.773898] e1000e 0000:00:19.0: irq 30 for MSI/MSI-X Jan 10 02:35:12 loki kernel: [ 1788.824499] e1000e 0000:00:19.0: irq 30 for MSI/MSI-X Jan 10 02:35:12 loki kernel: [ 1788.825518] ADDRCONF(NETDEV_UP): eth0: link is not ready Jan 10 02:35:13 loki kernel: [ 1789.227330] ADDRCONF(NETDEV_UP): wlan0: link is not ready Jan 10 02:35:13 loki kernel: [ 1789.545956] ADDRCONF(NETDEV_UP): wlan0: link is not ready Jan 10 02:35:14 loki kernel: [ 1789.935472] e1000e 0000:00:19.0: irq 30 for MSI/MSI-X Jan 10 02:35:14 loki kernel: [ 1789.986350] e1000e 0000:00:19.0: irq 30 for MSI/MSI-X Jan 10 02:35:14 loki kernel: [ 1789.987361] ADDRCONF(NETDEV_UP): eth0: link is not ready Jan 10 11:54:45 loki kernel: [ 1791.308376] PM: Syncing filesystems ... done. Jan 10 11:54:45 loki kernel: [ 1791.643621] Freezing user space processes ... (elapsed 0.28 seconds) done. Jan 10 11:54:45 loki kernel: [ 1791.929117] Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done. Jan 10 11:54:45 loki kernel: [ 1791.940120] Suspending console(s) (use no_console_suspend to debug) I didn't do anything to trigger this trace specifically. As I noticed most times it happened just before I do s2disk, you can see this in my log above. I'll post log with debug bit later. I use wicd to manage wireless. I attached all my kernel and wicd logs to this ticket. Unfortunately the logs you provided does not contain any debugging information. This is because your driver has not been compiled with debug support. Could you please recompile with CONFIG_IWLWIFI_DEBUG and reproduce the logs? Sorry, I can't provide more info now. Something broke in my system and now 2.6.33 boots with black screen, I'll provide more info when I restore my system On Fri, Jan 29, 2010 at 8:44 AM, <bugzilla-daemon@bugzilla.kernel.org>wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=15119 > > > Reinette Chatre <reinette.chatre@intel.com> changed: > > What |Removed |Added > > ---------------------------------------------------------------------------- > Status|NEW |NEEDINFO > > > > > -- > Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email > ------- You are receiving this mail because: ------- > You reported the bug. > Created attachment 24879 [details]
Fix deferred scan requests
I was able to reproduce this problem. Please test the attached patch when you can.
Thank you
Sorry. I can't reproduce it last 3 days after I updated to 2.6.33-rc6, but if I'll notice this warning again - I'll try your patch. Thanks for attention to my report. Johannes posted a better fix to linux-wireless. See http://thread.gmane.org/gmane.linux.kernel.wireless.general/46260 You are not able to reproduce this anymore but since we were able to reproduce the problem and create a fix I will proceed to close this bug. Please open a new bug report if you run into this issue while running with the fix. |