CVS Crash when using -r

Binary package hint: cvs

We have experienced crashes with cvs binary from edgy, and i am not sure if it's a specific ubuntu problem a config problem or a cvs (upstream problem).

When using cvs with -r we are getting this segfault :

-$ cvs up -dP -r mysource_3-12-0-branch .
cvs update: Updating .
? foo
cvs update: Updating cache
cvs update: Updating core
[...]
*** glibc detected *** cvs: double free or corruption (fasttop): 0x080ef818 ***
======= Backtrace: =========
/lib/libc.so.6[0xb7e37082]
/lib/libc.so.6(__libc_free+0x84)[0xb7e38704]
cvs[0x8078110]
cvs[0x80a5bf2]
cvs[0x8078b3a]
/lib/libc.so.6(__libc_start_main+0xdc)[0xb7de98cc]
cvs[0x804b8d1]
======= Memory map: ========
08048000-080ea000 r-xp 00000000 fe:00 1623466 /usr/bin/cvs
080ea000-080eb000 rw-p 000a2000 fe:00 1623466 /usr/bin/cvs
080eb000-0816f000 rw-p 080eb000 00:00 0 [heap]
b7c00000-b7c21000 rw-p b7c00000 00:00 0
b7c21000-b7d00000 ---p b7c21000 00:00 0
b7d65000-b7d6f000 r-xp 00000000 fe:00 3211355 /lib/libgcc_s.so.1
b7d6f000-b7d70000 rw-p 00009000 fe:00 3211355 /lib/libgcc_s.so.1
b7d7d000-b7d7e000 rw-p 00000000 fe:01 9928739 /home/cvs/fudge/wysiwyg/plugins/visual_aid/images/th.png,v
b7d7e000-b7d7f000 rw-p b7d7e000 00:00 0
b7d86000-b7dbb000 r--s 00000000 fe:00 3342434 /var/db/nscd/passwd
b7dbb000-b7dbd000 rw-p b7dbb000 00:00 0
b7dbd000-b7dbf000 r-xp 00000000 fe:00 3211302 /lib/libdl-2.4.so
b7dbf000-b7dc1000 rw-p 00001000 fe:00 3211302 /lib/libdl-2.4.so
b7dc1000-b7dd0000 r-xp 00000000 fe:00 3211327 /lib/libpthread-2.4.so
b7dd0000-b7dd2000 rw-p 0000e000 fe:00 3211327 /lib/libpthread-2.4.so
b7dd2000-b7dd4000 rw-p b7dd2000 00:00 0
b7dd4000-b7eed000 r-xp 00000000 fe:00 3211299 /lib/libc-2.4.so
b7eed000-b7eef000 r--p 00118000 fe:00 3211299 /lib/libc-2.4.so
b7eef000-b7ef1000 rw-p 0011a000 fe:00 3211299 /lib/libc-2.4.so
b7ef1000-b7ef4000 rw-p b7ef1000 00:00 0
b7ef4000-b7efb000 r-xp 00000000 fe:00 3211356 /lib/libpam.so.0.79
b7efb000-b7efc000 rw-p 00006000 fe:00 3211356 /lib/libpam.so.0.79
b7efc000-b7f0f000 r-xp 00000000 fe:00 1624162 /usr/lib/libz.so.1.2.3
b7f0f000-b7f10000 rw-p 00012000 fe:00 1624162 /usr/lib/libz.so.1.2.3
b7f10000-b7f11000 rw-p b7f10000 00:00 0
b7f11000-b7f22000 r-xp 00000000 fe:00 3211305 /lib/libnsl-2.4.so
b7f22000-b7f24000 rw-p 00010000 fe:00 3211305 /lib/libnsl-2.4.so
b7f24000-b7f26000 rw-p b7f24000 00:00 0
b7f26000-b7f2b000 r-xp 00000000 fe:00 3211301 /lib/libcrypt-2.4.so
b7f2b000-b7f2d000 rw-p 00004000 fe:00 3211301 /lib/libcrypt-2.4.so
b7f2d000-b7f54000 rw-p b7f2d000 00:00 0
b7f54000-b7f5a000 r-xp 00000000 fe:00 3211366 /lib/librt-2.4.so
b7f5a000-b7f5c000 rw-p 00005000 fe:00 3211366 /lib/librt-2.4.so
b7f69000-b7f6b000 rw-p b7f69000 00:00 0
b7f6b000-b7f84000 r-xp 00000000 fe:00 3211296 /lib/ld-2.4.so
b7f84000-b7f86000 rw-p 00018000 fe:00 3211296 /lib/ld-2.4.so
bfb91000-bfba6000 rw-p bfb91000 00:00 0 [stack]
ffffe000-fffff000 ---p 00000000 00:00 0 [vdso]
cvs [update aborted]: received abort signal

i can reproduce the problem with stock cvs and cvs version of cvs.

We are using ldap login and if i stop nscd i get simply a freeze of cvs hang and doing nothing.

I could not reproduce that when we were using dapper.

Let me know if you need more info, would be great if you can guide me on a path where to look at.

Cheers, Chmouel.