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SubjectRe: [BUG] SLOB's krealloc() seems bust
Matt Mackall wrote:

> We can't dynamically determine whether a pointer points to a kmalloced
> object or not. kmem_cache_alloc objects have no header and live on the
> same pages as kmalloced ones.

Could you do a heuristic check? Assume that this is a kmalloc object and then
verify the values in the small control block? If the values are out of line
then this cannot be a kmalloc'ed object.

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