On 2010-10-26 9:09 AM, Jaswinder Singh wrote:

quoted

ath9k is crashing the kernel :

[   21.276554] BUG: spinlock bad magic on CPU#1, NetworkManager/1056
[   21.277015]  lock: f5be80a8, .magic: 00000000, .owner: <none>/-1,
.owner_cpu: 0
[   21.277015] Pid: 1056, comm: NetworkManager Not tainted 2.6.36-netbook+ #20
[   21.277015] Call Trace:
[   21.277015]  [<c14767a7>] ? printk+0xf/0x11
[   21.277015]  [<c117b823>] spin_bug+0x7c/0x87
[   21.301365]  [<c117b8bd>] do_raw_spin_lock+0x1e/0x125
[   21.301365]  [<c1478d0a>] ? _raw_spin_unlock_bh+0x1a/0x1c
[   21.301365]  [<c1478dc3>] _raw_spin_lock_irqsave+0x17/0x1c
[   21.318857]  [<c1288a74>] ath9k_config+0x255/0x38b
[   21.318857]  [<c1447bdb>] ieee80211_hw_config+0x10a/0x114
[...]

Linux 2.6.36 f6f94e2ab1 is good
and
229aebb873e2972 is bad

After further investigation bad commit is :

3430098ae463e31ab16926ac3eb295368a3ca5d9 is the first bad commit
commit 3430098ae463e31ab16926ac3eb295368a3ca5d9
Author: Felix Fietkau [off-list ref]
Date:   Sun Oct 10 18:21:52 2010 +0200

    ath9k: implement channel utilization stats for survey

This should already be fixed in wireless-testing by the following commit

commit 20b25744d1366762c6878d3254f93973cafe1f8e
Author: Ben Greear [off-list ref]
Date:   Fri Oct 15 15:04:09 2010 -0700

    ath9k: Properly initialize ath_common->cc_lock.


- Felix
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