Dave Young napsal(a):
In the drivers/net/wireless/ath5k/base.c, there's recursive locking of sc->lock
This casue the kernel stuck
Bug report please see:
http://lkml.org/lkml/2008/7/29/32
Fixed it by remove the lock in sub routine "ath5k_beacon_update",
The ath5k_config_interface is the only caller to it.
[ 171.430207] =============================================
[ 171.432140] [ INFO: possible recursive locking detected ]
[ 171.433113] 2.6.27-rc1-smp #4
[ 171.434079] ---------------------------------------------
[ 171.435039] ath5k_pci/2447 is trying to acquire lock:
[ 171.435990] (&sc->lock){--..}, at: [<f89ee9b5>] ath5k_config_interface+0xd5/0x340 [ath5k]
[ 171.437046]
[ 171.437048] but task is already holding lock:
[ 171.438903] (&sc->lock){--..}, at: [<f89ee91d>] ath5k_config_interface+0x3d/0x340 [ath5k]
[ 171.439953]
[ 171.439954] other info that might help us debug this:
[ 171.441795] 3 locks held by ath5k_pci/2447:
[ 171.442729] #0: ((name)){--..}, at: [<c013a122>] run_workqueue+0x102/0x1d0
[ 171.443800] #1: (&(&local->scan_work)->work){--..}, at: [<c013a122>] run_workqueue+0x102/0x1d0
[ 171.444859] #2: (&sc->lock){--..}, at: [<f89ee91d>] ath5k_config_interface+0x3d/0x340 [ath5k]
Should be fixed already:
http://git.kernel.org/?p=linux/kernel/git/linville/wireless-2.6.git;a=commitdiff_plain;h=bc05116ab33d30342e2b4b1bcc6d6e1184e9df97
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