Re: 2.6.10-rc2-mm3-V0.7.31-3 memory leak (was Re: Debugging a memory leak

[Ingo Molnar]

* Valdis.Kletnieks@xxxxxx <Valdis.Kletnieks@xxxxxx> wrote:

> On Tue, 23 Nov 2004 15:38:58 PST, Andrew Morton said:
> > Valdis.Kletnieks@xxxxxx wrote:
> > >
> > > Any advice how to shoot this one?
> > 
> > Manfred's slab leak detector:
> 
> Ahh, many thanks - that helped quite a bit.  I tracked down the
> problem - it was in Ingo's VP patch.
> 
> sys_ioperm() would allocate an 8K bitmap and save it in
> ->io_bitmap_ptr. Then when we hit exit_thread(), Ingo's code would
> zero the pointer and *then* pass the freshly-zero'ed pointer to
> kfree() - which of course did nothing particularly interesting.  My
> fix was to save a copy of the pointer to pass to kfree.  Am seeing no
> more leaks.

ah ... good catch - patch applied.

	Ingo
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