timer.c BUG

I just hit this on my ath9k system, but it does have my patches applied, so it could just be my problem:

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kernel BUG at /home/greearb/git/linux.wireless-testing/kernel/timer.c:1027!
invalid opcode: 0000 [#1] SMP
last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:08:01.0/net/sta1/flags
Modules linked in: michael_mic ath5k arc4 ath9k mac80211 ath9k_common ath9k_hw ath cfg80211 ae]

Pid: 23809, comm: kworker/u:0 Not tainted 2.6.36-rc5-wl+ #7 PDSBM/PDSBM
EIP: 0060:[<c043d32b>] EFLAGS: 00010093 CPU: 1
EIP is at cascade+0x40/0x5e
EAX: fffffffe EBX: 00000019 ECX: f7070738 EDX: edc01c68
ESI: edc57b0c EDI: f7070000 EBP: edc57b20 ESP: edc57b08
DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Process kworker/u:0 (pid: 23809, ti=edc56000 task=f6733ea0 task.ti=edc56000)

Stack:
 edc57b0c c096e7f0 edc01c68 f7070000 00000000 00000001 edc57b6c c043d3ca
<0> edc57b58 edc57b4c 00000000 f7070e28 f7070c28 f7070a28 f7070828 c2602f8c
<0> 00000053 edc57b90 c04392a9 c042007b edc57b58 edc57b58 00000101 00000004
Call Trace:
 [<c043d3ca>] ? run_timer_softirq+0x81/0x1e7
 [<c04392a9>] ? __do_softirq+0x4c/0x111
 [<c042007b>] ? native_load_sp0+0x1c/0x2c
 [<c04392e3>] ? __do_softirq+0x86/0x111
 [<c04393a4>] ? do_softirq+0x36/0x5a
 [<c04394dd>] ? irq_exit+0x35/0x68
 [<c0418c3a>] ? smp_apic_timer_interrupt+0x6e/0x7c
 [<c07633df>] ? apic_timer_interrupt+0x2f/0x40
 [<c0434ffc>] ? vprintk+0x393/0x3b9
 [<f910f41c>] ? ath_txq_update+0xac/0xb6 [ath9k]
 [<c0760adc>] ? printk+0xf/0x13
 [<c06194ed>] ? __dev_printk+0x51/0x5b
 [<c0619643>] ? dev_printk+0x26/0x28
 [<f8c54101>] ? ieee80211_sta_wmm_params+0x1b8/0x233 [mac80211]
 [<c07619a8>] ? mutex_unlock+0x8/0xa
 [<f8c553ae>] ? ieee80211_assoc_success+0x457/0x7e4 [mac80211]
 [<f8c557e2>] ? ieee80211_assoc_done+0xa7/0xf6 [mac80211]
 [<c0456299>] ? trace_hardirqs_on+0xb/0xd
 [<f8c57175>] ? ieee80211_work_work+0x306/0xd36 [mac80211]
 [<c0456299>] ? trace_hardirqs_on+0xb/0xd
 [<c0443c4f>] ? process_one_work+0x1bd/0x2c3
 [<c0443c05>] ? process_one_work+0x173/0x2c3
 [<f8c56e6f>] ? ieee80211_work_work+0x0/0xd36 [mac80211]
 [<c04452fa>] ? worker_thread+0xf7/0x1f7
 [<c0445203>] ? worker_thread+0x0/0x1f7
 [<c0447ccf>] ? kthread+0x62/0x67
 [<c0447c6d>] ? kthread+0x0/0x67
 [<c0403506>] ? kernel_thread_helper+0x6/0x1a
Code: ca 89 75 ec 89 46 04 8b 74 da 04 89 75 f0 89 06 89 0c da 89 4c da 04 8b 55 ec 8b 32 89 4
EIP: [<c043d32b>] cascade+0x40/0x5e SS:ESP 0068:edc57b08

Ben Greear <[email protected]>
Candela Technologies Inc  http://www.candelatech.com