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    SubjectRe: [PATCH 2.6.17-rc6 7/9] Remove some of the kmemleak false positives
    On 12/06/06, Ingo Molnar <mingo@elte.hu> wrote:
    > * Pekka J Enberg <penberg@cs.Helsinki.FI> wrote:
    >
    > > > > - arch/i386/kernel/setup.c:
    > > > > False positive because res pointer is stored in a global instance of
    > > > > struct resource.
    > > >
    > > > there's no good way around this one but to annotate it in one way or
    > > > another.
    > >
    > > Scanning bss and data sections is too expensive, I guess. I would
    > > prefer we create a separate section for gc roots but what you're
    > > suggesting is ok as well.
    >
    > kmemleak does scan global data sections. I dont know why we dont
    > discover this particular pointer though: the resource pointer ought to
    > be accessible via the iomem_resource.parent/sibling/child sorted list.
    > Hm.

    Maybe it only appeared in the initial versions of kmemleak due to bugs
    in the tool and I never removed it. I'll check it again this evening
    on my home machine (that's where I got it). However, if
    request_resource() returns -EBUSY, that's a real leak.

    --
    Catalin
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