On Thu, 28 Jul 2011, Fernando Lopez-Lezcano wrote:
> On 07/27/2011 02:37 PM, Thomas Gleixner wrote:
> > Dear RT Folks,
> >
> > I'm pleased to announce the 3.0-rt4 release.
>
> Testing rt5 (lenovo dual core laptop running fc15, kernel based on koji's
> 3.0.0 build plus rt5)...
> ----
> [ 0.000000] =============================================
> [ 0.000000] [ INFO: possible recursive locking detected ]
> [ 0.000000] 3.0.0-1.rt5.1.fc15.ccrma.i686.rtPAE #1
> [ 0.000000] ---------------------------------------------
> [ 0.000000] swapper/0 is trying to acquire lock:
> [ 0.000000] (&parent->list_lock){+.+...}, at: [<c04fb406>]
> __cache_free+0x43/0xc3
> [ 0.000000]
> [ 0.000000] but task is already holding lock:
> [ 0.000000] (&parent->list_lock){+.+...}, at: [<c04fc538>]
> do_tune_cpucache+0xf2/0x2bb
> [ 0.000000]
> [ 0.000000] other info that might help us debug this:
> [ 0.000000] Possible unsafe locking scenario:
> [ 0.000000]
> [ 0.000000] CPU0
> [ 0.000000] ----
> [ 0.000000] lock(&parent->list_lock);
> [ 0.000000] lock(&parent->list_lock);
That's a know issue. Fix is being worked on. I can't find the thread
right now, but it's weird some interaction of debug options
(DEBUG_OBJECTS, DEBUG_SLAB ...) Peter ???
> (I guess because HIGHMEM is disabled the computer only finds 800M+ of LOWMEM
> and that is all top reports - total installed is 4G)
Yes, that's the state for now until someone fixes it :)
Thanks,
tglx
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