*** glibc detected *** double free or corruption

[Doyon, Jean-Francois]

Hello,

I'm testing MapServer on some new hardware/software, and ran into what looks
like a bug ...

With a specific mapfile, the mapserver CGI dies with the following error:

[Wed Feb 22 13:03:33 2006] [error] [client 132.156.4.96] *** glibc detected
*** double free or corruption (!prev): 0x09f76cf8 ***, referer: 
[Wed Feb 22 13:03:33 2006] [error] [client 132.156.4.96] Premature end of
script headers: mapserv461atlas, referer: 

(referer deleted)

This is mapserver 4.6.1 on CentOS 4.2 (i.e. RHEL 4).

It uses:

GDAL 1.3.1
PROJ 4.4.9

And the system libraries for the rest:

        libgd.so.2 => /usr/lib/libgd.so.2 (0x0065a000)
        libjpeg.so.62 => /usr/lib/libjpeg.so.62 (0x002aa000)
        libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x004dc000)
        libpng12.so.0 => /usr/lib/libpng12.so.0 (0x00343000)
        libz.so.1 => /usr/lib/libz.so.1 (0x004ca000)
        libproj.so.0 => /home/atlas/web/lib/libproj.so.0 (0x00111000)
        libgdal.so.1 => /home/atlas/web/lib/libgdal.so.1 (0x006a7000)
        libcurl.so.3 => /usr/lib/libcurl.so.3 (0x00145000)
        libssl.so.4 => /lib/libssl.so.4 (0x00175000)
        libcrypto.so.4 => /lib/libcrypto.so.4 (0x001a9000)
        libgssapi_krb5.so.2 => /usr/lib/libgssapi_krb5.so.2 (0x00292000)
        libkrb5.so.3 => /usr/lib/libkrb5.so.3 (0x005c9000)
        libcom_err.so.2 => /lib/libcom_err.so.2 (0x00447000)
        libk5crypto.so.3 => /usr/lib/libk5crypto.so.3 (0x00630000)
        libresolv.so.2 => /lib/libresolv.so.2 (0x002c8000)
        libdl.so.2 => /lib/libdl.so.2 (0x00441000)
        libidn.so.11 => /usr/lib/libidn.so.11 (0x0044c000)
        libc.so.6 => /lib/tls/libc.so.6 (0x009c7000)
        libm.so.6 => /lib/tls/libm.so.6 (0x00313000)
        libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00366000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x002db000)
        libXpm.so.4 => /usr/X11R6/lib/libXpm.so.4 (0x002e3000)
        libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x00af1000)
        libtiff.so.3 => /usr/lib/libtiff.so.3 (0x0047c000)
        librt.so.1 => /lib/tls/librt.so.1 (0x00543000)
        /lib/ld-linux.so.2 (0x002fc000)
        libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x00431000)
        libpthread.so.0 => /lib/tls/libpthread.so.0 (0x00557000)

The only thing noticeably different about the mapfile causing the error is
that it has WMS layers and is quite a bit bigger than your average mapfile.

I found nothing in bugzilla.

Anybody run into this before?  I found one obscure reference, but no clear
cause/solution.

Thanks,

Jean-François Doyon
Internet Service Development and Systems Support / Spécialiste de
dèveloppements internet et soutien technique
Canada Centre for Remote Sensing/Centre Canadien de télédétection
Natural Resources Canada/Ressources Naturelles Canada
http://atlas.gc.ca
Tel./Tél.: (613) 992-4902
Fax: (613) 947-2410