Page-align offset before calculating virtual addresses for ELF

benfred / py-spy

Sampling profiler for Python programs

MIT License

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Open andrewjcg opened 8 months ago

andrewjcg commented 8 months ago

This mimics what ld.so does by aligning the virtual addresses to the current page size, and fixes:

Existing issues with DSOs produced by LLD which, unlike gold or BFD, doesn't align p_vaddr to p_align (the previous overflow prevention wasn't sufficient here).
Systems w/ configurable page sizes, where just using p_align isn't enough.