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Re: Bash's malloc does not work within qemu-user when compiled with PIE
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From: |
Chet Ramey |
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Subject: |
Re: Bash's malloc does not work within qemu-user when compiled with PIE enabled |
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Date: |
Tue, 13 Feb 2018 10:03:07 -0500 |
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User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 |
On 2/13/18 6:41 AM, Raphael Hertzog wrote:
> Hello,
>
> in Debian we wanted to build bash with PIE enabled [1], but we discovered that
> bash was broken under qemu-user when it was compiled that way [2].
>
> It turns out that it's broken only when it uses bash's malloc
> implementation. If we build bash with PIE and --without-bash-malloc then
> we don't have the problem.
>
> It would be nice if bash's malloc implementation could be fixed to also
> work under qemu-user.
Does sbrk(2) work in a PIE-enabled environment?
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/