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Bug 1062545 - [abrt] WARNING: CPU: 1 PID: 21280 at drivers/net/wireless/iwlwifi/pcie/tx.c:1079 iwl_trans_pcie_txq_enable+0x26d/0x3b0 [iwlwifi]()
Summary: [abrt] WARNING: CPU: 1 PID: 21280 at drivers/net/wireless/iwlwifi/pcie/tx.c:1...
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: rawhide
Hardware: i686
OS: Unspecified
Target Milestone: ---
Assignee: fedora-kernel-wireless-iwl
QA Contact: Fedora Extras Quality Assurance
Whiteboard: abrt_hash:bd52ec84ac71f2fc2d02517387d...
Depends On:
TreeView+ depends on / blocked
Reported: 2014-02-07 08:55 UTC by Christopher Meng
Modified: 2014-10-21 12:04 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2014-10-21 12:04:18 UTC

Attachments (Terms of Use)
File: dmesg (deleted)
2014-02-07 08:56 UTC, Christopher Meng
no flags Details

Description Christopher Meng 2014-02-07 08:55:43 UTC
Additional info:
reporter:       libreport-2.1.12
WARNING: CPU: 1 PID: 21280 at drivers/net/wireless/iwlwifi/pcie/tx.c:1079 iwl_trans_pcie_txq_enable+0x26d/0x3b0 [iwlwifi]()
queue 11 already used - expect issues
Modules linked in: ip6t_rpfilter ip6t_REJECT xt_conntrack ebtable_nat ebtable_broute ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw ccm fuse bridge stp llc snd_hda_codec_hdmi coretemp snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep snd_seq arc4 iwldvm snd_seq_device snd_pcm binfmt_misc mac80211 joydev iTCO_wdt iTCO_vendor_support uvcvideo iwlwifi microcode btusb videobuf2_vmalloc videobuf2_memops videobuf2_core videodev media serio_raw mei_me lpc_ich i2c_i801 mei sdhci_pci cfg80211 sdhci mmc_core bluetooth snd_page_alloc snd_timer thinkpad_acpi snd soundcore rfkill acpi_cpufreq nouveau i2c_algo_bit drm_kms_helper mxm_wmi ttm e1000e drm firewire_ohci firewire_core i2c_core ata_generic crc_itu_t pata_acpi ptp pps_core wmi video [last unloaded: iptable_raw]
CPU: 1 PID: 21280 Comm: kworker/u4:2 Not tainted 3.13.0-0.rc8.git4.2.fc21.i686 #1
Hardware name: LENOVO 251676C/251676C, BIOS 6IET85WW (1.45 ) 02/14/2013
Workqueue: phy0 ieee80211_iface_work [mac80211]
 00000000 00000000 f378dd30 c09a57a3 f378dd70 f378dd60 c0448c3e f8117a04
 f378dd8c 00005320 f8117688 00000437 f810df0d f810df0d f4b62000 00000000
 0000000b f378dd78 c0448c93 00000009 f378dd70 f8117a04 f378dd8c f378dddc
Call Trace:
 [<c09a57a3>] dump_stack+0x41/0x52
 [<c0448c3e>] warn_slowpath_common+0x7e/0xa0
 [<f810df0d>] ? iwl_trans_pcie_txq_enable+0x26d/0x3b0 [iwlwifi]
 [<f810df0d>] ? iwl_trans_pcie_txq_enable+0x26d/0x3b0 [iwlwifi]
 [<c0448c93>] warn_slowpath_fmt+0x33/0x40
 [<f810df0d>] iwl_trans_pcie_txq_enable+0x26d/0x3b0 [iwlwifi]
 [<fb28d7a4>] iwlagn_tx_agg_oper+0xe4/0x210 [iwldvm]
 [<c047dea7>] ? load_balance+0x107/0x6f0
 [<c047726e>] ? update_cfs_rq_blocked_load+0x11e/0x180
 [<fb289691>] iwlagn_mac_ampdu_action+0x151/0x360 [iwldvm]
 [<fb289540>] ? iwlagn_mac_flush+0x1d0/0x1d0 [iwldvm]
 [<f920bbc3>] ieee80211_agg_tx_operational+0xa3/0x1c0 [mac80211]
 [<f920c959>] ieee80211_process_addba_resp+0xb9/0x110 [mac80211]
 [<f9211a2a>] ieee80211_iface_work+0x2ba/0x310 [mac80211]
 [<c045f4c5>] process_one_work+0x115/0x380
 [<c045ffbe>] worker_thread+0xfe/0x330
 [<c045fec0>] ? manage_workers.isra.28+0x250/0x250
 [<c0465751>] kthread+0xa1/0xc0
 [<c09b2a77>] ret_from_kernel_thread+0x1b/0x28
 [<c04656b0>] ? insert_kthread_work+0x30/0x30

Potential duplicate: bug 994518

Comment 1 Christopher Meng 2014-02-07 08:56:02 UTC
Created attachment 860394 [details]
File: dmesg

Comment 2 Josh Boyer 2014-02-07 14:32:08 UTC
3.13.0-0.rc8.git4.2 is a rather odd kernel to still be running.  Does the 3.13 final kernel hit this, or the latest 3.14.0-0.rc1.gitX kernel?

Comment 3 Christopher Meng 2014-02-08 01:38:06 UTC
This 3.13 kernel was fetched from repo days ago and then I didn't do any update.

These kernels are installed:

[rpmaker@fab Desktop]$ rpm -qa |grep -e ^kernel-3





neither worked on my thinkpad. Not exaggeration, I really wanted to smash it.


Yesterday I updated the kernel to kernel-3.14.0-0.rc1.git2.2.fc21.i686, during the update the brat throwed this out.

Comment 4 Emmanuel Grumbach 2014-03-19 11:49:33 UTC
disabling TX AMPDU will help here.
TX AMPDU is disabled by default in 3.14-rc6 I think.

Comment 5 Need Real Name 2014-04-29 05:17:16 UTC
I've also gotten this crash (same line number), and a much more frequent one at:

drivers/net/wireless/iwlwifi/iwl-trans.h:743 iwl_trans_pcie_wait_txq_empty+0x374/0x3e0 [iwlwifi]()

I can paste ABRT info if that's useful.  It seems to be sporadic: I go without crashes for weeks and then suddenly I get a spate of them, like every few hours for the past couple days.  I'm running 3.13.9-100.fc19.x86_64 kernel which I think is the current FC19 kernel.  3.14 was released about a month ago but I haven't seen an auto-update about it.  I also looked at the change log for 3.14 and I don't see the commit about TX AMPDU there.

Is there a way to turn TX AMPDU off from user commands, and/or is anything else likely to help?  After one of these warnings, the wifi driver shuts down and I get an ABRT.  Is there a way to bring the wifi back up without rebooting the whole computer?  I guess I can manually install a kernel upgrade if I have to.



Comment 6 Need Real Name 2014-07-01 03:29:40 UTC
I've still had these crashes happen in a couple of 3.14 kernels, currently 3.14.8-100.fc19.x86_64 .

Comment 7 Emmanuel Grumbach 2014-10-20 06:36:52 UTC
Should be fixed by

which will be upstreamed soon.

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