Re: git: b014e0f15bc7 - main - Enable ASLR by default for 64-bit executables

Reply: Jessica Clarke : "Re: git: b014e0f15bc7 - main - Enable ASLR by default for 64-bit executables"
In reply to: Slawa Olhovchenkov : "Re: git: b014e0f15bc7 - main - Enable ASLR by default for 64-bit executables"
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From: John Baldwin <jhb_at_FreeBSD.org>
Date: Wed, 24 Nov 2021 16:23:55 UTC

On 11/24/21 6:41 AM, Slawa Olhovchenkov wrote:
> On Tue, Nov 16, 2021 at 10:26:42PM +0000, Marcin Wojtas wrote:
> 
>>
>>      Enable ASLR by default for 64-bit executables
>>      
> 
> Now any core dumps will be useless?

I believe core dumps should be fine.  We include the ELF auxv values in core
dumps as a NT_PROCSTAT_AUXV note that GDB (and I presume LLDB) both look at
to determine the location of the main executable (AT_BASE).  Once the dynamic
section of the main executable is found, DT_DEBUG is used to find the linked
list of shared libraries (including rtld itself) just as with PDEs.

-- 
John Baldwin