Re: [PATCH 1/1] arm: print alloc free paths for address in registers
From: Russell King - ARM Linux admin
Date: Wed Feb 24 2021 - 10:06:33 EST
On Wed, Feb 24, 2021 at 06:07:34PM +0530, Maninder Singh wrote:
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+bool slab_page_object(unsigned long address, void **object, struct kmem_cache **cache)
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+{
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+ void *addr = (void *)address;
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+ struct page *page;
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+
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+ if ((addr >= (void *)PAGE_OFFSET) &&
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+ (addr < high_memory)) {
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+ 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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