Messages in this thread | | | Date | Thu, 26 Jan 2023 12:28:49 +0100 (CET) | From | Christoph Lameter <> | Subject | Re: [PATCH 7/9] mm: kmemleak: erase page->s_mem in slab_destroy |
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On Mon, 23 Jan 2023, George Prekas wrote:
> The field s_mem of struct page is initialized with the virtual address > of the page in function alloc_slabmgmt. If kmalloc allocates an object > that starts on this page, then kmemleak knows that this object has 2 > references. On slab_destroy, s_mem should not continue referring to any > allocated object in the future.
Nope.
s_mem is a pointer to an array of objects. It is not a pointer to a page.
If a slab-caches is used for slabmanagement then these objects contain slab metadata which may be a bit confusing.
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