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Re: Fwd: Hurd shutdown problems

From: Richard Braun
Subject: Re: Fwd: Hurd shutdown problems
Date: Wed, 10 Aug 2016 16:26:35 +0200
User-agent: Mutt/1.5.23 (2014-03-12)

On Tue, Aug 09, 2016 at 03:37:00PM -1000, Brent W. Baccala wrote:
> GDB on the kernel shows a seemingly corrupted ELF symbol table when
> elf_db_search_symbol() is called.

The symbol table is preserved by the early allocation code
(see biosmem.c) and should normally never be touched. But I've
just noticed that we don't request page-aligned modules from
the boot loader (see MULTIBOOT_FLAGS in boothdr.S), and at
some point, late during the boot process, module data are freed
using (see free_bootstrap_pages in bootstrap.c). This might
explain the corruptions.

Richard Braun

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