[cmucl-help] Segmentation fault when trying to use the max heap

[Chisheng Huang]

Raymond Toy <toy.raymond at gmail.com> writes:

>>>>>> "Chisheng" == Chisheng Huang <cph at chi-square-works.com> writes:
>
>     Chisheng> Hi,
>     Chisheng> I'll get a segmentation fault when I specify -dynamic-space-size 0
>     Chisheng> with the 2016-02 snapshot on a 32-bit Linux machine:
>
>     Chisheng>   % lisp -dynamic-space-size 0
>     Chisheng>   Segmentation fault
>     Chisheng>   % lisp -dynamic-space-size 1700
>     Chisheng>   -dynamic-space-size must be no greater than 1632 MBytes.
>     Chisheng>   % lisp -dynamic-space-size 1632
>     Chisheng>   Segmentation fault
>     Chisheng>   % lisp -dynamic-space-size 1600
>     Chisheng>   Segmentation fault
>     Chisheng>   % lisp -dynamic-space-size 1550
>     Chisheng>   Segmentation fault
>     Chisheng>   % lisp -dynamic-space-size 1500
>     Chisheng>   CMU Common Lisp snapshot-2016-02 (21A Unicode), running on whale
>     Chisheng>   With core: /usr/local/cmucl-2016-02/lib/cmucl/lib/lisp-sse2.core
>     Chisheng>   Dumped on: Mon, 2016-02-15 09:58:28-08:00 on lorien3
>     Chisheng>   See <http://www.cmucl.org/> for support information.
>     Chisheng>   Loaded subsystems:
>     Chisheng>       Unicode 1.29 with Unicode version 6.2.0
>     Chisheng>       Python 1.1, target Intel x86/sse2
>     Chisheng>       CLOS based on Gerd's PCL 2010/03/19 15:19:03
>     Chisheng>   * 
>
> Thanks for the report.  I'm guessing that this means that address
> space used for the heap overlaps some other important system space.
>
> Can you send the output of cat /proc/<pid>/maps for the lisp process
> with a heap size of 1500?  That should give a hint at what's going on.
> CMUCL expects that the heap can use all of the memory from 0x58100000
> to 0xbe000000.  This seems to be true on my Fedora system.
>
> What 32-bit linux system are you running on?

It's Ubuntu 11.10 on a virtual machine (VirtualBox).  The
/proc/<pid>/maps of a CMUCL process with a heap size of 1500 is 
attached at the end.  Thank you very much.

Best,

-cph

-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: lisp-maps
URL: <http://lists.zs64.net/mailman-archive/cmucl-help/attachments/20160227/04a498a8/attachment.ksh>