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Re: [Gcl-devel] address@hidden: Re: Executable memory: some apps that wo
From: |
Camm Maguire |
Subject: |
Re: [Gcl-devel] address@hidden: Re: Executable memory: some apps that work on RH9 don't on FC1] |
Date: |
17 Nov 2003 15:33:29 -0500 |
User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 |
Greetings!
Tim Daly <address@hidden> writes:
> Further information from the fedora devel list:
>
> From: Roland McGrath <address@hidden>
> Subject: Re: Executable memory: some apps that work on RH9 don't on FC1
> To: address@hidden
>
>
> You can disable the exec-shield functionality globally with
> /proc/sys/kernel/exec-shield, but that doesn't do anything different for an
> older binary that is not marked or for a binary that is marked as requiring
> executable stack. exec-shield is always disabled for those execs.
>
> The issue you are having is probably that malloc does not use PROT_EXEC in
> its mmap-based allocations. Executability should be enabled in the brk
> area when exec-shield is disabled. Verify the situation by looking at
> /proc/PID/maps for the process in question.
>
Just one other clarification: GCL redefines malloc as a pathway
through its own sbrk-generated, gbc managed memory system. Again,
don't see the relevance (yet) from the failuire as reported.
Take care,
> ----------
>
>
>
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> address@hidden
> http://mail.gnu.org/mailman/listinfo/gcl-devel
>
>
>
--
Camm Maguire address@hidden
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