[Bug 271081] www/firefox: crashes on arm64 with ASLR enabled

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 25 Jan 2024 22:10:34 UTC

--- Comment #26 from Jesper Schmitz Mouridsen <jsm@FreeBSD.org> ---
(In reply to Jesper Schmitz Mouridsen from comment #25)
Ok the difference in my understanding between arm64 and arm64/aarch64 on AMD64
the address pointer is always a valid firefoz jit region i.e 47th bit and above
are never set. This is not true for arm64 so MapAlignedPagesRandom returns null
when the last attempts are not in a validRange. Furthermore I cannot confirm
that linuxes randomizes mmap'ed virtual addresses, so TryToAlignChunk works
better there.

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