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[ath5k] kernel panic while using compat-wireless-2.6.38.2-2

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Hello linux-wireless list!

I am using a Sparklan WPEA-166G/W with Chipset AR5BXB63 Rev. 11 (it's a MiniPCI-card) in an embedded X86-System (Pipal 2140U, Intel ATOM processor). It's running voyage-0.6.5, which essentially is a Debian Lenny System.

I am running kernel 2.6.33.9-rt31:

demo00000001:~# uname -a
Linux SSB_wlan-demo00000001 2.6.33.9-rt31-atom-ssb #1 PREEMPT RT Mon May 9 18:25:28 CEST 2011 i686 GNU/Linux

I installed the compat-wireless drivers version 2.6.38.2-2 ( http://www.orbit-lab.org/kernel/compat-wireless-2.6-stable/v2.6.38/compat-wireless-2.6.38.2-2.tar.bz2 ) and installed everything I need according to this webpage: http://acx100.erley.org/stable.html

Once issueing modprobe ath5k, putting the interface up and waiting for ~30sec, I get a kernel panic. Could this be a bug or am I doing something wrong?

The error only occurrs after putting the interface up. If I don't do so, the error won't be there.

Here is some output from the machine:

demo00000001:~# modprobe ath5k && ifconfig wlan0 up
[   48.363894] Compat-wireless backport release: compat-wireless-2.6.38.2-2
[   48.372351] Backport based on linux-2.6-allstable.git v2.6.38.2
[   48.411748] cfg80211: Calling CRDA to update world regulatory domain
[ 48.517969] ath5k 0000:09:00.0: using bridge 0000:00:1c.2 INT A to get IRQ 17
[   48.526919] ath5k 0000:09:00.0: PCI->APIC IRQ transform: INT A -> IRQ 17
[   48.534315] ath5k 0000:09:00.0: registered as 'phy0'
[   49.162919] ath5k phy0: Atheros AR2425 chip found (MAC: 0xe2, PHY: 0x70)
demo00000001:~# [   77.953752] ------------[ cut here ]------------
[ 77.958711] WARNING: at /home/dborgmann/downloads/compat-wireless-2.6.38.2-2/net/mac80211/rx.c:2827 ieee80211_rx+0x38/0x6fe [mac80211]()
[   77.971856] Hardware name: Luna Pier CRB
[   77.976049] Modules linked in: [last unloaded: scsi_wait_scan]
[ 77.982354] Pid: 9, comm: sirq-tasklet/0 Not tainted 2.6.33.9-rt31-atom-ssb #1
[   77.990090] Call Trace:
[   77.992732]  [<c011852f>] warn_slowpath_common+0x65/0x7c
[   77.998419]  [<e0024ad1>] ? ieee80211_rx+0x38/0x6fe [mac80211]
[   78.004672]  [<c0118553>] warn_slowpath_null+0xd/0x10
[   78.010119]  [<e0024ad1>] ieee80211_rx+0x38/0x6fe [mac80211]
[   78.016157]  [<c022d6e8>] ? __alloc_skb+0x4c/0x110
[   78.021296]  [<c0106297>] ? nommu_map_page+0x3c/0x51
[   78.026648]  [<e00992c9>] ? ath5k_rx_skb_alloc+0x99/0x10a [ath5k]
[   78.033190]  [<e009b989>] ath5k_tasklet_rx+0x59f/0x60b [ath5k]
[   78.039454]  [<c011c486>] __tasklet_action.clone.8+0x76/0xd1
[   78.045502]  [<c011c529>] tasklet_action+0x23/0x25
[   78.050640]  [<c011c285>] run_ksoftirqd+0xf0/0x19b
[   78.055788]  [<c011c195>] ? run_ksoftirqd+0x0/0x19b
[   78.061032]  [<c0127829>] kthread+0x5e/0x63
[   78.065538]  [<c01277cb>] ? kthread+0x0/0x63
[   78.070107]  [<c0102bb6>] kernel_thread_helper+0x6/0x10
[   78.075695] ---[ end trace 6b864a3c0aa1a8eb ]---


Best regards,
Dennis
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