Messages in this thread | | | Date | Wed, 24 Feb 2021 14:03:47 +0000 | From | Russell King - ARM Linux admin <> | Subject | Re: [PATCH 1/1] arm: print alloc free paths for address in registers |
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On Wed, Feb 24, 2021 at 06:07:34PM +0530, Maninder Singh wrote: > +bool slab_page_object(unsigned long address, void **object, struct kmem_cache **cache) > +{ > + void *addr = (void *)address; > + struct page *page; > + > + if ((addr >= (void *)PAGE_OFFSET) && > + (addr < high_memory)) { > + page = virt_to_head_page(addr);
This check is not sufficient. There can be holes in the page array. You need to use virt_addr_valid() to validate "addr".
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