168c:1014 WARNING: at /build/buildd/linux-2.6.32/drivers/net/wireless/ath/ath5k/base.c:1142 ath5k_tasklet_rx 0x53b/0x5a0 [ath5k]()

Beleive this to be the cause of my system freezes here... my backtrace:

WARNING: at /build/buildd/linux-2.6.32/drivers/net/wireless/ath/ath5k/base.c:1142 ath5k_tasklet_rx+0x4c3/0x5a0 [ath5k]()
Call Trace:
 [<c0154042>] warn_slowpath_common+0x72/0xa0
 [<f88ee403>] ? ath5k_tasklet_rx+0x4c3/0x5a0 [ath5k]
 [<f88ee403>] ? ath5k_tasklet_rx+0x4c3/0x5a0 [ath5k]
 [<c01540bb>] warn_slowpath_fmt+0x2b/0x30
 [<f88ee403>] ath5k_tasklet_rx+0x4c3/0x5a0 [ath5k]
 [<c01596e7>] tasklet_action+0xa7/0xb0
 [<c015acd8>] __do_softirq+0x98/0x1b0
 [<c0128d0b>] ? ack_apic_level+0x6b/0x170
 [<c017eef0>] ? tick_do_update_jiffies64+0x120/0x170

This happens a lot to me but it doesn't seem to cause any serious problems and my system remains stable.

Ok. I'm not sure then but I've definately been experiencing system freezes. Some very unscientific testing has showed some consistency with Wifi usage (ie: it's never occurred when Wifi has been disabled). Using the most recent Karmic kernel (2.6.31-20-generic-pae) I experience no freezes.

Same here, I have a pretty stable system om Karmic after enabling backports module. But I have quite regular system freezes now.

Only 2.6.31-20 works without system freezes on Wifi now. This is a complete showstopper for laptops using this wireless card (many?). Is there any upstream work to address this? I'm willing to test patches... please lets get this resolved!

This is a regression, and affects at least 2 of my thinkpads, please get this resolved.

I have been getting some freezes recently with the latest kernel which might be related to this since I experienced the crash before. I have unloaded the ath5k driver now to see if it makes my system stable.

"Side"-simptoms:
While using skype there are hiccups on the calls every 1-2 minutes (that happened on Ubuntu 9.10 too).

It does not happen when I compile and use the "old" hal/madwifi-ng driver (neither on 9.10 nor 10.04) :-/

lspci -v:

0c:00.0 Ethernet controller: Atheros Communications Inc. AR5001 Wireless Network Adapter (rev 01)
 Subsystem: Atheros Communications Inc. Device 3063
 Flags: bus master, fast devsel, latency 0, IRQ 17
 Memory at efdf0000 (64-bit, non-prefetchable) [size=64K]
 Capabilities: [40] Power Management version 2
 Capabilities: [50] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable-
 Capabilities: [60] Express Legacy Endpoint, MSI 00
 Capabilities: [90] MSI-X: Enable- Mask- TabSize=1
 Capabilities: [100] Advanced Error Reporting <?>
 Capabilities: [140] Virtual Channel <?>
 Kernel driver in use: ath5k
 Kernel modules: ath5k

[ 5927.113556] ------------[ cut here ]------------
[ 5927.113590] WARNING: at /build/buildd/linux-2.6.32/drivers/net/wireless/ath/ath5k/base.c:1142 ath5k_tasklet_rx+0x4e0/0x5c0 [ath5k]()
[ 5927.113598] Hardware name: Latitude D430
[ 5927.113602] invalid hw_rix: 1b
[ 5927.113606] Modules linked in: cryptd aes_x86_64 aes_generic binfmt_misc ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables rfcomm sco bridge stp bnep l2cap kvm_intel kvm dm_crypt arc4 joydev snd_hda_codec_idt pcmcia snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device dell_wmi ath5k dell_laptop sdhci_pci mac80211 ath btusb bluetooth yenta_socket rsrc_nonstatic dcdbas pcmcia_core sdhci psmouse serio_raw snd ppdev cfg80211 led_class soundcore snd_page_alloc parport_pc lp parport fbcon tileblit font bitblit softcursor vga16fb vgastate usbhid hid usb_storage i915 drm_kms_helper ohci1394 ieee1394 tg3 intel_agp drm i2c_algo_bit video output
[ 5927.113759] Pid: 0, comm: swapper Not tainted 2.6.32-22-generic #36-Ubuntu
[ 5927.113764] Call Trace:
[ 5927.113770] <IRQ> [<ffffffff81066d0b>] warn_slowpath_common+0x7b/0xc0
[ 5927.113794] [<ffffffff81066db1>] warn_slowpath_fmt+0x41/0x50
[ 5927.113811] [<ffffffffa02b82a0>] ath5k_tasklet_rx+0x4e0/0x5c0 [ath5k]
[ 5927.113822] [<ffffffff81540c45>] ? _spin_lock_irq+0x15/0x20
[ 5927.113833] [<ffffffff8106c985>] tasklet_action+0xd5/0xe0
[ 5927.113841] [<ffffffff8106e3a7>] __do_softirq+0xb7/0x1e0
[ 5927.113851] [<ffffffff81031b52>] ? ack_apic_level+0x82/0x1f0
[ 5927.113861] [<ffffffff810142ec>] call_softirq+0x1c/0x30
[ 5927.113868] [<ffffffff81015cb5>] do_softirq+0x65/0xa0
[ 5927.113875] [<ffffffff8106e245>] irq_exit+0x85/0x90
[ 5927.113883] [<ffffffff81545ed5>] do_IRQ+0x75/0xf0
[ 5927.113891] [<ffffffff81013b13>] ret_from_intr+0x0/0x11
[ 5927.113895] <EOI> [<ffffffff8130d347>] ? acpi_idle_enter_bm+0x28a/0x2be
[ 5927.113912] [<ffffffff8130d340>] ? acpi_idle_enter_bm+0x283/0x2be
[ 5927.113923] [<ffffffff81437537>] ? cpuidle_idle_call+0xa7/0x140
[ 5927.113933] [<ffffffff81011e73>] ? cpu_idle+0xb3/0x110
[ 5927.113941] [<ffffffff8153ad7b>] ? start_s...

This happens in lucid with linux-image-server-lts-backport-oneiric 3.0.0.13.1 under moderate WiFi traffic.

shaowen, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.11-rc5

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

If you are unable to test the mainline kernel, please comment as to why specifically you were unable to test it and add the following tags:
kernel-unable-to-test-upstream
kernel-unable-to-test-upstream-VERSION-NUMBER

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding.

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]