I've attached a very minimal test case exhibiting the problem. The output when running the test case is as follows:
evan@thinkpad ~/Desktop $ python fail_cdb.py bar *** glibc detected *** python: free(): invalid pointer: 0xb7d847b8 *** ======= Backtrace: ========= /lib/tls/i686/cmov/libc.so.6[0xb7e6cd65] /lib/tls/i686/cmov/libc.so.6(cfree+0x90)[0xb7e70800] /usr/lib/python2.5/site-packages/cdbmodule.so[0xb7d361cd] python[0x80855f9] python(PyDict_SetItem+0x6e)[0x8086f5e] python(_PyModule_Clear+0x158)[0x8088bb8] python(PyImport_Cleanup+0x153)[0x80dd0e3] python(Py_Finalize+0xbf)[0x80e931f] python(Py_Main+0x4d1)[0x8058ea1] python(main+0x22)[0x80588c2] /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe0)[0xb7e19050] python[0x8058831] ======= Memory map: ======== 08048000-0813f000 r-xp 00000000 08:06 295700 /usr/bin/python2.5 0813f000-08164000 rwxp 000f6000 08:06 295700 /usr/bin/python2.5 08164000-081dd000 rwxp 08164000 00:00 0 [heap] b7c00000-b7c21000 rwxp b7c00000 00:00 0 b7c21000-b7d00000 ---p b7c21000 00:00 0 b7d33000-b7d38000 r-xp 00000000 08:06 427539 /usr/lib/python2.5/site-packages/cdbmodule.so b7d38000-b7d3a000 rwxp 00004000 08:06 427539 /usr/lib/python2.5/site-packages/cdbmodule.so b7d3a000-b7d41000 r-xs 00000000 08:06 293822 /usr/lib/gconv/gconv-modules.cache b7d41000-b7d80000 r-xp 00000000 08:06 359861 /usr/lib/locale/en_US.utf8/LC_CTYPE b7d80000-b7e03000 rwxp b7d80000 00:00 0 b7e03000-b7f47000 r-xp 00000000 08:06 555518 /lib/tls/i686/cmov/libc-2.6.1.so b7f47000-b7f48000 r-xp 00143000 08:06 555518 /lib/tls/i686/cmov/libc-2.6.1.so b7f48000-b7f4a000 rwxp 00144000 08:06 555518 /lib/tls/i686/cmov/libc-2.6.1.so b7f4a000-b7f4d000 rwxp b7f4a000 00:00 0 b7f4d000-b7f70000 r-xp 00000000 08:06 555522 /lib/tls/i686/cmov/libm-2.6.1.so b7f70000-b7f72000 rwxp 00023000 08:06 555522 /lib/tls/i686/cmov/libm-2.6.1.so b7f72000-b7f74000 r-xp 00000000 08:06 557627 /lib/tls/i686/cmov/libutil-2.6.1.so b7f74000-b7f76000 rwxp 00001000 08:06 557627 /lib/tls/i686/cmov/libutil-2.6.1.so b7f76000-b7f77000 rwxp b7f76000 00:00 0 b7f77000-b7f79000 r-xp 00000000 08:06 555521 /lib/tls/i686/cmov/libdl-2.6.1.so b7f79000-b7f7b000 rwxp 00001000 08:06 555521 /lib/tls/i686/cmov/libdl-2.6.1.so b7f7b000-b7f8f000 r-xp 00000000 08:06 557611 /lib/tls/i686/cmov/libpthread-2.6.1.so b7f8f000-b7f91000 rwxp 00013000 08:06 557611 /lib/tls/i686/cmov/libpthread-2.6.1.so b7f91000-b7f93000 rwxp b7f91000 00:00 0 b7f96000-b7fa0000 r-xp 00000000 08:06 555306 /lib/libgcc_s.so.1 b7fa0000-b7fa1000 rwxp 0000a000 08:06 555306 /lib/libgcc_s.so.1 b7fa1000-b7fa2000 rwxp b7fa1000 00:00 0 b7fa3000-b7fa5000 rwxp b7fa3000 00:00 0 b7fa5000-b7fbf000 r-xp 00000000 08:06 555076 /lib/ld-2.6.1.so b7fbf000-b7fc1000 rwxp 00019000 08:06 555076 /lib/ld-2.6.1.so bf825000-bf83b000 rw-p bf825000 00:00 0 [stack] ffffe000-fffff000 r-xp 00000000 00:00 0 [vdso] Aborted (core dumped)
I've attached a very minimal test case exhibiting the problem. The output when running the test case is as follows:
evan@thinkpad ~/Desktop $ python fail_cdb.py i686/cmov/ libc.so. 6[0xb7e6cd65] i686/cmov/ libc.so. 6(cfree+ 0x90)[0xb7e7080 0] python2. 5/site- packages/ cdbmodule. so[0xb7d361cd] PyDict_ SetItem+ 0x6e)[0x8086f5e ] _PyModule_ Clear+0x158) [0x8088bb8] PyImport_ Cleanup+ 0x153)[ 0x80dd0e3] Py_Finalize+ 0xbf)[0x80e931f ] Py_Main+ 0x4d1)[ 0x8058ea1] main+0x22) [0x80588c2] i686/cmov/ libc.so. 6(__libc_ start_main+ 0xe0)[0xb7e1905 0] python2. 5/site- packages/ cdbmodule. so python2. 5/site- packages/ cdbmodule. so gconv/gconv- modules. cache locale/ en_US.utf8/ LC_CTYPE i686/cmov/ libc-2. 6.1.so i686/cmov/ libc-2. 6.1.so i686/cmov/ libc-2. 6.1.so i686/cmov/ libm-2. 6.1.so i686/cmov/ libm-2. 6.1.so i686/cmov/ libutil- 2.6.1.so i686/cmov/ libutil- 2.6.1.so i686/cmov/ libdl-2. 6.1.so i686/cmov/ libdl-2. 6.1.so i686/cmov/ libpthread- 2.6.1.so i686/cmov/ libpthread- 2.6.1.so
bar
*** glibc detected *** python: free(): invalid pointer: 0xb7d847b8 ***
======= Backtrace: =========
/lib/tls/
/lib/tls/
/usr/lib/
python[0x80855f9]
python(
python(
python(
python(
python(
python(
/lib/tls/
python[0x8058831]
======= Memory map: ========
08048000-0813f000 r-xp 00000000 08:06 295700 /usr/bin/python2.5
0813f000-08164000 rwxp 000f6000 08:06 295700 /usr/bin/python2.5
08164000-081dd000 rwxp 08164000 00:00 0 [heap]
b7c00000-b7c21000 rwxp b7c00000 00:00 0
b7c21000-b7d00000 ---p b7c21000 00:00 0
b7d33000-b7d38000 r-xp 00000000 08:06 427539 /usr/lib/
b7d38000-b7d3a000 rwxp 00004000 08:06 427539 /usr/lib/
b7d3a000-b7d41000 r-xs 00000000 08:06 293822 /usr/lib/
b7d41000-b7d80000 r-xp 00000000 08:06 359861 /usr/lib/
b7d80000-b7e03000 rwxp b7d80000 00:00 0
b7e03000-b7f47000 r-xp 00000000 08:06 555518 /lib/tls/
b7f47000-b7f48000 r-xp 00143000 08:06 555518 /lib/tls/
b7f48000-b7f4a000 rwxp 00144000 08:06 555518 /lib/tls/
b7f4a000-b7f4d000 rwxp b7f4a000 00:00 0
b7f4d000-b7f70000 r-xp 00000000 08:06 555522 /lib/tls/
b7f70000-b7f72000 rwxp 00023000 08:06 555522 /lib/tls/
b7f72000-b7f74000 r-xp 00000000 08:06 557627 /lib/tls/
b7f74000-b7f76000 rwxp 00001000 08:06 557627 /lib/tls/
b7f76000-b7f77000 rwxp b7f76000 00:00 0
b7f77000-b7f79000 r-xp 00000000 08:06 555521 /lib/tls/
b7f79000-b7f7b000 rwxp 00001000 08:06 555521 /lib/tls/
b7f7b000-b7f8f000 r-xp 00000000 08:06 557611 /lib/tls/
b7f8f000-b7f91000 rwxp 00013000 08:06 557611 /lib/tls/
b7f91000-b7f93000 rwxp b7f91000 00:00 0
b7f96000-b7fa0000 r-xp 00000000 08:06 555306 /lib/libgcc_s.so.1
b7fa0000-b7fa1000 rwxp 0000a000 08:06 555306 /lib/libgcc_s.so.1
b7fa1000-b7fa2000 rwxp b7fa1000 00:00 0
b7fa3000-b7fa5000 rwxp b7fa3000 00:00 0
b7fa5000-b7fbf000 r-xp 00000000 08:06 555076 /lib/ld-2.6.1.so
b7fbf000-b7fc1000 rwxp 00019000 08:06 555076 /lib/ld-2.6.1.so
bf825000-bf83b000 rw-p bf825000 00:00 0 [stack]
ffffe000-fffff000 r-xp 00000000 00:00 0 [vdso]
Aborted (core dumped)