Re: sysfs lockdep complaint

From: AmÃrico Wang
Date: Sat Feb 20 2010 - 04:26:23 EST


On Thu, Feb 18, 2010 at 5:32 PM, Johannes Berg
<johannes@xxxxxxxxxxxxxxxx> wrote:
> Get this when powernowd starts on my G5:
>
> [ Â 30.490674] =============================================
> [ Â 30.490708] [ INFO: possible recursive locking detected ]
> [ Â 30.490727] 2.6.33-rc8-wl-64012-g6917413 #160
> [ Â 30.490744] ---------------------------------------------
> [ Â 30.490763] powernowd/2577 is trying to acquire lock:
> [ Â 30.490782] Â(s_active){++++.+}, at: [<c0000000001efa94>] .sysfs_addrm_finish+0x58/0xc0
> [ Â 30.490831]
> [ Â 30.490833] but task is already holding lock:
> [ Â 30.490854] Â(s_active){++++.+}, at: [<c0000000001eff80>] .sysfs_get_active_two+0x3c/0x84
> [ Â 30.490895]

This should be fixed by the patchset from Eric:

http://lkml.org/lkml/2010/2/11/334
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