crash with python 2.5 (double free)

[Laurent Bigonville]

Binary package hint: python-pam

the module always crashes with python 2.5

*** glibc detected *** /usr/bin/python: free(): invalid pointer: 0xb7d131c0 ***
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6[0xb7de2f7d]
/lib/tls/i686/cmov/libc.so.6(cfree+0x90)[0xb7de65c0]
/usr/lib/python2.5/site-packages/PAMmodule.so[0xb7cb3ef6]
/usr/bin/python[0x8082f19]
/usr/bin/python(PyDict_SetItem+0x6e)[0x808487e]
/usr/bin/python(_PyModule_Clear+0x158)[0x80864d8]
/usr/bin/python(PyImport_Cleanup+0x153)[0x80da963]
/usr/bin/python(Py_Finalize+0xbf)[0x80e6b5f]
/usr/bin/python(Py_Main+0x4ce)[0x8056aae]
/usr/bin/python(main+0x22)[0x80564d2]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xdc)[0xb7d90ebc]
/usr/bin/python[0x8056421]
======= Memory map: ========
08048000-0813c000 r-xp 00000000 08:02 638614 /usr/bin/python2.5
0813c000-08161000 rw-p 000f3000 08:02 638614 /usr/bin/python2.5
08161000-081da000 rw-p 08161000 00:00 0 [heap]
b7a00000-b7a21000 rw-p b7a00000 00:00 0
b7a21000-b7b00000 ---p b7a21000 00:00 0
b7bc9000-b7bd2000 r-xp 00000000 08:02 83151 /lib/tls/i686/cmov/libnss_files-2.5.so
b7bd2000-b7bd4000 rw-p 00008000 08:02 83151 /lib/tls/i686/cmov/libnss_files-2.5.so
b7bd4000-b7bdc000 r-xp 00000000 08:02 83208 /lib/tls/i686/cmov/libnss_nis-2.5.so
b7bdc000-b7bde000 rw-p 00007000 08:02 83208 /lib/tls/i686/cmov/libnss_nis-2.5.so
b7c35000-b7c48000 r-xp 00000000 08:02 83148 /lib/tls/i686/cmov/libnsl-2.5.so
b7c48000-b7c4a000 rw-p 00012000 08:02 83148 /lib/tls/i686/cmov/libnsl-2.5.so
b7c4a000-b7c4c000 rw-p b7c4a000 00:00 0
b7c89000-b7c93000 r-xp 00000000 08:02 81824 /lib/libgcc_s.so.1
b7c93000-b7c94000 rw-p 0000a000 08:02 81824 /lib/libgcc_s.so.1
b7ca7000-b7ca9000 r-xp 00000000 08:02 408856 /lib/libpam_misc.so.0.79
b7ca9000-b7caa000 rw-p 00001000 08:02 408856 /lib/libpam_misc.so.0.79
b7caa000-b7cb1000 r-xp 00000000 08:02 408855 /lib/libpam.so.0.79
b7cb1000-b7cb2000 rw-p 00007000 08:02 408855 /lib/libpam.so.0.79
b7cb2000-b7cb5000 r-xp 00000000 08:02 721794 /usr/lib/python2.5/site-packages/PAMmodule.so
b7cb5000-b7cb6000 rw-p 00002000 08:02 721794 /usr/lib/python2.5/site-packages/PAMmodule.so
b7cb6000-b7cbd000 r--s 00000000 08:02 654667 /usr/lib/gconv/gconv-modules.cache
b7cbd000-b7cf8000 r--p 00000000 08:02 670959 /usr/lib/locale/fr_BE.utf8/LC_CTYPE
b7cf8000-b7d7b000 rw-p b7cf8000 00:00 0
b7d7b000-b7eb9000 r-xp 00000000 08:02 83142 /lib/tls/i686/cmov/libc-2.5.so
b7eb9000-b7eba000 r--p 0013e000 08:02 83142 /lib/tls/i686/cmov/libc-2.5.so
b7eba000-b7ebc000 rw-p 0013f000 08:02 83142 /lib/tls/i686/cmov/libc-2.5.so
b7ebc000-b7ebf000 rw-p b7ebc000 00:00 0
b7ebf000-b7ee4000 r-xp 00000000 08:02 83146 /lib/tls/i686/cmov/libm-2.5.so
b7ee4000-b7ee6000 rw-p 00024000 08:02 83146 /lib/tls/i686/cmov/libm-2.5.so
b7ee6000-b7ee8000 r-xp 00000000 08:02 83663 /lib/tls/i686/cmov/libutil-2.5.so
b7ee8000-b7eea000 rw-p 00001000 08:02 83663 /lib/tls/i686/cmov/libutil-2.5.so
b7eea000-b7eeb000 rw-p b7eea000 00:00 0
b7eeb000-b7eed000 r-xp 00000000 08:02 83145 /lib/tls/i686/cmov/libdl-2.5.so
b7eed000-b7eef000 rw-p 00001000 08:02 83145 /lib/tls/i686/cmov/libdl-2.5.so
b7eef000-b7f03000 r-xp 00000000 08:02 83658 /lib/tls/i686/cmov/libpthread-2.5.so
b7f03000-b7f05000 rw-p 00013000 08:02 83658 /lib/tls/i686/cmov/libpthread-2.5.so
b7f05000-b7f07000 rw-p b7f05000 00:00 0
b7f0a000-b7f0b000 rw-p b7f0a000 00:00 0
b7f0b000-b7f12000 r-xp 00000000 08:02 83149 /lib/tls/i686/cmov/libnss_compat-2.5.so
b7f12000-b7f14000 rw-p 00006000 08:02 83149 /lib/tls/i686/cmov/libnss_compat-2.5.so
b7f14000-b7f15000 rw-p b7f14000 00:00 0
b7f15000-b7f18000 r-xp 00000000 08:02 132156 /usr/lib/python2.5/lib-dynload/termios.so
b7f18000-b7f1a000 rw-p 00002000 08:02 132156 /usr/lib/python2.5/lib-dynload/termios.so
b7f1a000-b7f1c000 rw-p b7f1a000 00:00 0
b7f1c000-b7f35000 r-xp 00000000 08:02 81893 /lib/ld-2.5.so
b7f35000-b7f37000 rw-p 00019000 08:02 81893 /lib/ld-2.5.so
bfad7000-bfaed000 rw-p bfad7000 00:00 0 [stack]
ffffe000-fffff000 r-xp 00000000 00:00 0 [vdso]

[Laurent Bigonville (bigon)]

#0 0xffffe410 in ?? ()
#1 0xbfd6422c in ?? ()
#2 0x00000006 in ?? ()
#3 0x00000430 in ?? ()
#4 0xb7e08df0 in raise () from /lib/tls/i686/cmov/libc.so.6
#5 0xb7e0a641 in abort () from /lib/tls/i686/cmov/libc.so.6
#6 0xb7e3f11b in __libc_message () from /lib/tls/i686/cmov/libc.so.6
#7 0xb7e46f7d in _int_free () from /lib/tls/i686/cmov/libc.so.6
#8 0xb7e4a5c0 in free () from /lib/tls/i686/cmov/libc.so.6
#9 0xb7d17ef6 in PyPAM_dealloc (self=0xb7d771c0) at PAMmodule.c:489
#10 0x08082f19 in insertdict (mp=0xb7db7acc, key=0xb7d738c0, hash=-700138930, value=0x8143db8) at ../Objects/dictobject.c:412
#11 0x0808487e in PyDict_SetItem (op=0xb7db7acc, key=0xb7d738c0, value=0x8143db8) at ../Objects/dictobject.c:637
#12 0x080864d8 in _PyModule_Clear (m=0xb7d9e0ec) at ../Objects/moduleobject.c:136
#13 0x080da963 in PyImport_Cleanup () at ../Python/import.c:433
#14 0x080e6b5f in Py_Finalize () at ../Python/pythonrun.c:397
#15 0x08056aae in Py_Main (argc=1, argv=0xbfd64d04) at ../Modules/main.c:545
#16 0x080564d2 in main (argc=Cannot access memory at address 0x430
) at ../Modules/python.c:23

[Laurent Bigonville (bigon)]

Fixed with last upload (0.4.2-12ubuntu1) to gutsy

[Dan (danser)]

0.4.2-12ubuntu1 builds with a couple of debhelper warnings on feisty, and fixes the problem.

[Matthias Klose (doko)]

please attach a debdiff for a feisty update

[Hew (hew)]

Ubuntu Feisty Fawn is no longer supported, so a SRU will not be issued for this release. Marking Feisty as Won't Fix.