[Bug 562681] Re: WARNING: at /build/buildd/linux-2.6.32/kernel/softirq.c:143 local_bh_enable_ip+0x61/0x90()

[Jeff Shelley]

*** This bug is a duplicate of bug 561125 ***
    https://bugs.launchpad.net/bugs/561125

I ran into this one today with the same trace.  The symptom was that my
wireless connectivity went out.  The OP's trace was in
/var/log/messages:


May 12 01:20:19 stuntman2 kernel: [32803.713158] ------------[ cut here ]------------
May 12 01:20:19 stuntman2 kernel: [32803.713169] WARNING: at /build/buildd/linux-2.6.32/kernel/softirq.c:143 local_bh_enable_ip+0x7b/0xa0()
May 12 01:20:19 stuntman2 kernel: [32803.713175] Hardware name: LifeBook N6470
May 12 01:20:19 stuntman2 kernel: [32803.713178] Modules linked in: binfmt_misc ppdev snd_hda_codec_atihdmi joydev snd_hda_codec_realtek fbcon tileblit font bitblit softcursor vga16fb vgastate arc4 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 pcmcia snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device ath9k radeon snd mac80211 ath ttm drm_kms_helper sdhci_pci yenta_socket rsrc_nonstatic sdhci video output psmouse serio_raw cfg80211 fujitsu_laptop led_class soundcore snd_page_alloc drm i2c_algo_bit pcmcia_core lp intel_agp parport ohci1394 sky2 ahci ieee1394
May 12 01:20:19 stuntman2 kernel: [32803.713271] Pid: 785, comm: phy0 Tainted: G   M       2.6.32-22-generic #33-Ubuntu
May 12 01:20:19 stuntman2 kernel: [32803.713275] Call Trace:
May 12 01:20:19 stuntman2 kernel: [32803.713286]  [<ffffffff81066d0b>] warn_slowpath_common+0x7b/0xc0
May 12 01:20:19 stuntman2 kernel: [32803.713293]  [<ffffffff81066d64>] warn_slowpath_null+0x14/0x20
May 12 01:20:19 stuntman2 kernel: [32803.713299]  [<ffffffff8106de4b>] local_bh_enable_ip+0x7b/0xa0
May 12 01:20:19 stuntman2 kernel: [32803.713308]  [<ffffffff81540e99>] _spin_unlock_bh+0x19/0x20
May 12 01:20:19 stuntman2 kernel: [32803.713326]  [<ffffffffa02e8955>] ath_tx_node_cleanup+0x185/0x1b0 [ath9k]
May 12 01:20:19 stuntman2 kernel: [32803.713342]  [<ffffffffa02e2d77>] ath9k_sta_notify+0x57/0xb0 [ath9k]
May 12 01:20:19 stuntman2 kernel: [32803.713359]  [<ffffffffa018e89c>] __sta_info_unlink+0x15c/0x1f0 [mac80211]
May 12 01:20:19 stuntman2 kernel: [32803.713373]  [<ffffffffa018e96d>] sta_info_unlink+0x3d/0x60 [mac80211]
May 12 01:20:19 stuntman2 kernel: [32803.713391]  [<ffffffffa0196e96>] ieee80211_set_disassoc+0x1b6/0x220 [mac80211]
May 12 01:20:19 stuntman2 kernel: [32803.713409]  [<ffffffffa01989a0>] ? ieee80211_sta_work+0x0/0x510 [mac80211]
May 12 01:20:19 stuntman2 kernel: [32803.713425]  [<ffffffffa0198e75>] ieee80211_sta_work+0x4d5/0x510 [mac80211]
May 12 01:20:19 stuntman2 kernel: [32803.713445]  [<ffffffffa01a6aaa>] ? ieee80211_queue_delayed_work+0x3a/0x50 [mac80211]
May 12 01:20:19 stuntman2 kernel: [32803.713462]  [<ffffffffa01989a0>] ? ieee80211_sta_work+0x0/0x510 [mac80211]
May 12 01:20:19 stuntman2 kernel: [32803.713471]  [<ffffffff81080777>] run_workqueue+0xc7/0x1a0
May 12 01:20:19 stuntman2 kernel: [32803.713478]  [<ffffffff810808f3>] worker_thread+0xa3/0x110
May 12 01:20:19 stuntman2 kernel: [32803.713485]  [<ffffffff81085320>] ? autoremove_wake_function+0x0/0x40
May 12 01:20:19 stuntman2 kernel: [32803.713492]  [<ffffffff81080850>] ? worker_thread+0x0/0x110
May 12 01:20:19 stuntman2 kernel: [32803.713499]  [<ffffffff81084fa6>] kthread+0x96/0xa0
May 12 01:20:19 stuntman2 kernel: [32803.713506]  [<ffffffff810141ea>] child_rip+0xa/0x20
May 12 01:20:19 stuntman2 kernel: [32803.713512]  [<ffffffff81084f10>] ? kthread+0x0/0xa0
May 12 01:20:19 stuntman2 kernel: [32803.713518]  [<ffffffff810141e0>] ? child_rip+0x0/0x20
May 12 01:20:19 stuntman2 kernel: [32803.713522] ---[ end trace 9b8272103868f18d ]---



/var/log/syslog started filling up with this:

May 12 01:20:01 stuntman2 kernel: [32786.137398] ath9k: timeout (100000 us) on reg 0x9860: 0x00049d19 & 0x00000001 != 0x00000000
May 12 01:20:01 stuntman2 kernel: [32786.137411] ath9k: Unable to reset channel (2447 Mhz) reset status -5
May 12 01:20:01 stuntman2 kernel: [32786.137429] ath9k: Unable to set channel

I've seen this on older ubuntu installs.  This gets around it:

rmmod ath9k
modprobe ath9k
service network-manager restart

It'd be nice to know what's actually happening at some point, or if
there's a better way around it.

-- 
WARNING: at /build/buildd/linux-2.6.32/kernel/softirq.c:143 local_bh_enable_ip+0x61/0x90()
https://bugs.launchpad.net/bugs/562681
You received this bug notification because you are a member of Kernel
Bugs, which is subscribed to linux in ubuntu.