Date: Mon, 10 Jan 2022 14:30:17 +0100 From: Florian Weimer <fweimer@...hat.com> To: Rich Felker <dalias@...c.org> Cc: Nihal Jere <nihal@...aljere.xyz>, musl@...ts.openwall.com Subject: Re: Dynamic linker segfault * Rich Felker: > By my understanding, p_align implies an understanding by the creator > of the program that the load segment may be "over-mapped" (extra file > contents visible and possibly executable) up to that alignment > boundary due to page granularity. This isn't really a correctness > contract but a security/hardening contract for folks who consider > anti-ROP measures a boundary that should be enforced. Not sure if I follow. Do you mean p_align is purely for documenting layout decisions by the link editor? I suspect that the necessary overlap would be visible by other means, too. Thanks, Florian
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