offlineimap crash with kerberos

[liuhangbin]

My system env:

$ uname -r
4.1.6-100.fc21.x86_64
$ rpm -q offlineimap
offlineimap-6.5.5-2.fc21.noarch
$ rpm -q krb5-workstation
krb5-workstation-1.12.2-17.fc21.x86_64

When start offlineimap without exec kinit, it works well. But when exec kinit, it crashed

$ offlineimap -a test
OfflineIMAP 6.5.5
Licensed under the GNU GPL v2+ (v2 or any later version)
Account sync test:
*** Processing account test
Establishing connection to mail.test.com:993
*** Error in `/usr/bin/python': free(): invalid pointer: 0x00007fbcc088da60 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x77d9e)[0x7fbccf0a0d9e]
/lib64/libc.so.6(cfree+0x5b5)[0x7fbccf0ac9f5]
/lib64/libgssapi_krb5.so.2(gss_release_buffer+0x3c)[0x7fbcc71a769c]
/home/Liu/.python-eggs/pykerberos-1.1.8-py2.7-linux-x86_64.egg-tmp/kerberos.so(authenticate_gss_client_wrap+0x141)[0x7fbcc30fd071]
/home/Liu/.python-eggs/pykerberos-1.1.8-py2.7-linux-x86_64.egg-tmp/kerberos.so(+0x2eb7)[0x7fbcc30faeb7]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5f6e)[0x7fbccfdf3a5e]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5106)[0x7fbccfdf2bf6]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5106)[0x7fbccfdf2bf6]
/lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x820)[0x7fbccfdf4410]
/lib64/libpython2.7.so.1.0(+0x6f5dc)[0x7fbccfd805dc]
/lib64/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7fbccfd5b903]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x3570)[0x7fbccfdf1060]
/lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x820)[0x7fbccfdf4410]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5004)[0x7fbccfdf2af4]
/lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x820)[0x7fbccfdf4410]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5004)[0x7fbccfdf2af4]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5106)[0x7fbccfdf2bf6]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5106)[0x7fbccfdf2bf6]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5106)[0x7fbccfdf2bf6]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5106)[0x7fbccfdf2bf6]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5106)[0x7fbccfdf2bf6]
/lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x820)[0x7fbccfdf4410]
/lib64/libpython2.7.so.1.0(+0x6f6bd)[0x7fbccfd806bd]
/lib64/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7fbccfd5b903]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x3570)[0x7fbccfdf1060]
/lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x820)[0x7fbccfdf4410]
/lib64/libpython2.7.so.1.0(+0x6f5dc)[0x7fbccfd805dc]
/lib64/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7fbccfd5b903]
/lib64/libpython2.7.so.1.0(+0x59815)[0x7fbccfd6a815]
/lib64/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7fbccfd5b903]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x3aa5)[0x7fbccfdf1595]
/lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x820)[0x7fbccfdf4410]
/lib64/libpython2.7.so.1.0(+0x6f5dc)[0x7fbccfd805dc]
/lib64/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7fbccfd5b903]
/lib64/libpython2.7.so.1.0(+0x59815)[0x7fbccfd6a815]
/lib64/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7fbccfd5b903]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x3aa5)[0x7fbccfdf1595]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5106)[0x7fbccfdf2bf6]
/lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5106)[0x7fbccfdf2bf6]
/lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x820)[0x7fbccfdf4410]
/lib64/libpython2.7.so.1.0(+0x6f5dc)[0x7fbccfd805dc]
/lib64/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7fbccfd5b903]
/lib64/libpython2.7.so.1.0(+0x59815)[0x7fbccfd6a815]
/lib64/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7fbccfd5b903]
/lib64/libpython2.7.so.1.0(PyEval_CallObjectWithKeywords+0x47)[0x7fbccfded4d7]
/lib64/libpython2.7.so.1.0(+0x1120a2)[0x7fbccfe230a2]
/lib64/libpthread.so.0(+0x752a)[0x7fbccfafc52a]
/lib64/libc.so.6(clone+0x6d)[0x7fbccf12922d]
======= Memory map: ========
00400000-00401000 r-xp 00000000 08:02 5771430 /usr/bin/python2.7
00600000-00601000 r--p 00000000 08:02 5771430 /usr/bin/python2.7
00601000-00602000 rw-p 00001000 08:02 5771430 /usr/bin/python2.7
015b9000-0185f000 rw-p 00000000 00:00 0 [heap]
7fbca8000000-7fbca8021000 rw-p 00000000 00:00 0
7fbca8021000-7fbcac000000 ---p 00000000 00:00 0
7fbcac000000-7fbcac021000 rw-p 00000000 00:00 0
7fbcac021000-7fbcb0000000 ---p 00000000 00:00 0
7fbcb0000000-7fbcb0021000 rw-p 00000000 00:00 0
7fbcb0021000-7fbcb4000000 ---p 00000000 00:00 0
7fbcb4000000-7fbcb402f000 rw-p 00000000 00:00 0
7fbcb402f000-7fbcb8000000 ---p 00000000 00:00 0
...[too long, snipped, tell me if you need it]..
7fbccfaf5000-7fbccfb0c000 r-xp 00000000 08:02 5767855 /usr/lib64/libpthread-2.20.soAborted (core dumped

[liuhangbin]

BTW, after remove /usr/lib/python2.7/site-packages/pykerberos-1.1.8-py2.7-linux-x86_64.egg and reinstall python-kerberos-1.1-16.fc21.x86_64, this issue fixed.