Bug 703102

Summary:

[abrt] kernel: WARNING: at net/mac80211/scan.c:265 ieee80211_scan_completed+0x63/0x191 [mac80211]()

Product:

[Fedora] Fedora

Reporter:

Scott Marshall <cyberrider>

Component:

kernel

Assignee:

Kernel Maintainer List <kernel-maint>

Status:

CLOSED NEXTRELEASE

QA Contact:

Fedora Extras Quality Assurance <extras-qa>

Severity:

unspecified

Docs Contact:

Priority:

unspecified

Version:

CC:

gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, sgruszka

Target Milestone:

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Target Release:

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Hardware:

x86_64

OS:

Unspecified

Whiteboard:

abrt_hash:88698414

Fixed In Version:

Doc Type:

Bug Fix

Doc Text:

Story Points:

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Clone Of:

Environment:

Last Closed:

2011-05-09 19:36:38 UTC

Type:

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Regression:

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Mount Type:

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Documentation:

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CRM:

Verified Versions:

Category:

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oVirt Team:

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RHEL 7.3 requirements from Atomic Host:

Cloudforms Team:

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Target Upstream Version:

Attachments:

Description	Flags
File: backtrace	none

Description Scott Marshall 2011-05-09 09:49:28 UTC

abrt version: 1.1.18
architecture: x86_64
cmdline: not_applicable
component: kernel
executable: kernel
kernel: 2.6.35.12-90.fc14.x86_64
package: kernel
reason: WARNING: at net/mac80211/scan.c:265 ieee80211_scan_completed+0x63/0x191 [mac80211]()
release: Fedora release 14 (Laughlin)
time: 1304934132
uid: 0

backtrace
-----
WARNING: at net/mac80211/scan.c:265 ieee80211_scan_completed+0x63/0x191 [mac80211]()
Hardware name: 7659AB8
Modules linked in: tun fuse rfcomm sco bnep l2cap cryptd aes_x86_64 aes_generic sunrpc cpufreq_ondemand acpi_cpufreq freq_table mperf nf_conntrack_netbios_ns ip6t_REJECT nf_conntrack_ipv6 ip6table_filter ip6_tables ipv6 kvm_intel kvm uinput snd_hda_codec_analog arc4 ecb snd_hda_intel iwlagn snd_hda_codec snd_hwdep snd_seq snd_seq_device iwlcore snd_pcm mac80211 thinkpad_acpi i2c_i801 r852 sm_common nand nand_ids nand_ecc mtd snd_timer snd_page_alloc snd soundcore btusb iTCO_wdt iTCO_vendor_support e1000e wmi bluetooth cfg80211 joydev rfkill microcode firewire_ohci sdhci_pci sdhci firewire_core mmc_core crc_itu_t yenta_socket i915 drm_kms_helper drm i2c_algo_bit i2c_core video output [last unloaded: scsi_wait_scan]
Pid: 825, comm: iwlagn Tainted: G        W   2.6.35.12-90.fc14.x86_64 #1
Call Trace:
 [<ffffffff8104dce1>] warn_slowpath_common+0x85/0x9d
 [<ffffffff8104dd13>] warn_slowpath_null+0x1a/0x1c
 [<ffffffffa034cf05>] ieee80211_scan_completed+0x63/0x191 [mac80211]
 [<ffffffffa03c68a5>] iwl_bg_scan_completed+0x179/0x1b4 [iwlcore]
 [<ffffffff81062bdd>] worker_thread+0x1c5/0x251
 [<ffffffffa03c672c>] ? iwl_bg_scan_completed+0x0/0x1b4 [iwlcore]
 [<ffffffff81066a2f>] ? autoremove_wake_function+0x0/0x39
 [<ffffffff81062a18>] ? worker_thread+0x0/0x251
 [<ffffffff81066595>] kthread+0x7f/0x87
 [<ffffffff8100aae4>] kernel_thread_helper+0x4/0x10
 [<ffffffff81066516>] ? kthread+0x0/0x87
 [<ffffffff8100aae0>] ? kernel_thread_helper+0x0/0x10

How to reproduce
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1. Unknown - system was sitting idle when the crash/OOPS occurred
2.
3.

Comment 1 Scott Marshall 2011-05-09 09:49:31 UTC

Created attachment 497750 [details]
File: backtrace

Comment 2 Stanislaw Gruszka 2011-05-09 19:36:38 UTC

I'm sorry, this bug will not be fixed in F-14. It is fixed in F-15.

Comment 3 Stanislaw Gruszka 2011-05-09 19:37:05 UTC

*** Bug 703099 has been marked as a duplicate of this bug. ***

Comment 4 Stanislaw Gruszka 2011-05-09 19:52:41 UTC

BTW, you can use newer wireless drivers on F-14 using compat-wireless:

http://people.redhat.com/sgruszka/compact_wireless.html

Comment 5 Scott Marshall 2011-05-11 02:04:28 UTC

(In reply to comment #2)
> I'm sorry, this bug will not be fixed in F-14. It is fixed in F-15.

Is there any particular reason for this?

F-15 hasn't even been generally released, and thus F-14 is still the current (ie "N") release of Fedora.
I would have thought, based upon the maintenance schedule published at http://fedoraproject.org/wiki/Fedora_Release_Life_Cycle#Maintenance_Schedule that fixes such as this would be back-ported to at least the current version.

(Fedora 14 will be maintained until 1 month after the release of Fedora 16.)

Comment 6 Stanislaw Gruszka 2011-05-11 11:40:23 UTC

(In reply to comment #5)
> (In reply to comment #2)
> > I'm sorry, this bug will not be fixed in F-14. It is fixed in F-15.
> 
> Is there any particular reason for this?

This problem is actually many different bugs (race conditions) in iwlwifi scan code, which was very badly written. To fix we had to rewrite almost all of that, together with some corresponding mac80211 code. This can not be easy backported to old kernel version.