[New-bugs-announce] [issue8176] Interpreter crash with "double free or corruption" message
Carlos Ribeiro
report at bugs.python.org
Fri Mar 19 11:41:08 CET 2010
New submission from Carlos Ribeiro <carribeiro at gmail.com>:
I was running Django in development mode (python manage.py runserver 0.0.0.0:8002). I saved a python source file; Django automatically detected the change and reloaded the module (that's the usual behavior). Then a backtrace from glibc appeared in the middle of the log. Django web server kept running, so I assume that the bug hit a separate thread. I also assume that this is a Python bug due to the nature of the trace (came from glibc). That's all information that I have.
---- python version ----
Python 2.6.4 (r264:75706, Dec 7 2009, 18:45:15)
[GCC 4.4.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
---- trace ----
Django version 1.1.1, using settings 'camg.settings'
Development server is running at http://0.0.0.0:8002/
Quit the server with CONTROL-C.
[18/Mar/2010 22:50:23] "GET / HTTP/1.1" 200 27012
[18/Mar/2010 22:50:23] "GET /static/css/camg.css HTTP/1.1" 304 0
[18/Mar/2010 22:50:23] "GET /static/images/consorciomg.png HTTP/1.1" 304 0
[18/Mar/2010 22:52:01] "GET /andar/SEC1-3/ HTTP/1.1" 200 6441
[18/Mar/2010 22:52:06] "GET /switch/SEC1-3-3A-SA01/ HTTP/1.1" 200 6546
[18/Mar/2010 22:52:11] "GET /sala/3/ HTTP/1.1" 500 69619
[18/Mar/2010 22:52:13] "GET /switch/SEC1-3-3A-SA01/ HTTP/1.1" 200 6546
*** glibc detected *** /usr/bin/python: double free or corruption (out): 0xb7651b80 ***
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6[0x17aff1]
/lib/tls/i686/cmov/libc.so.6[0x17c6f2]
/lib/tls/i686/cmov/libc.so.6(cfree+0x6d)[0x17f7cd]
/usr/bin/python[0x80b9ceb]
/usr/bin/python[0x808e622]
/usr/bin/python[0x808e634]
/usr/bin/python[0x806a42b]
/usr/bin/python[0x808e634]
/usr/bin/python[0x808cf19]
/usr/bin/python(PyDict_SetItem+0x87)[0x808f377]
/usr/bin/python(_PyModule_Clear+0x99)[0x8090c49]
/usr/bin/python(PyImport_Cleanup+0x459)[0x80edaf9]
/usr/bin/python(Py_Finalize+0xa5)[0x80fa305]
/usr/bin/python[0x80f9daf]
/usr/bin/python(PyErr_PrintEx+0x18d)[0x80f9f9d]
/usr/bin/python(PyErr_Print+0x12)[0x80fa1d2]
/usr/bin/python(PyRun_SimpleFileExFlags+0x1ab)[0x80facfb]
/usr/bin/python(Py_Main+0xaa8)[0x805c8d8]
/usr/bin/python(main+0x1b)[0x805baeb]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe6)[0x126b56]
/usr/bin/python[0x805ba31]
======= Memory map: ========
00110000-0024e000 r-xp 00000000 08:01 553 /lib/tls/i686/cmov/libc-2.10.1.so
0024e000-0024f000 ---p 0013e000 08:01 553 /lib/tls/i686/cmov/libc-2.10.1.so
0024f000-00251000 r--p 0013e000 08:01 553 /lib/tls/i686/cmov/libc-2.10.1.so
00251000-00252000 rw-p 00140000 08:01 553 /lib/tls/i686/cmov/libc-2.10.1.so
00252000-00255000 rw-p 00000000 00:00 0
00255000-00382000 r-xp 00000000 08:01 3085 /lib/i686/cmov/libcrypto.so.0.9.8
00382000-0038a000 r--p 0012c000 08:01 3085 /lib/i686/cmov/libcrypto.so.0.9.8
0038a000-00397000 rw-p 00134000 08:01 3085 /lib/i686/cmov/libcrypto.so.0.9.8
00397000-0039b000 rw-p 00000000 00:00 0
0039b000-003bc000 r-xp 00000000 08:01 1749 /usr/lib/libpq.so.5.2
003bc000-003bd000 r--p 00020000 08:01 1749 /usr/lib/libpq.so.5.2
003bd000-003be000 rw-p 00021000 08:01 1749 /usr/lib/libpq.so.5.2
003be000-003c0000 r-xp 00000000 08:01 560 /lib/libcom_err.so.2.1
003c0000-003c1000 r--p 00001000 08:01 560 /lib/libcom_err.so.2.1
003c1000-003c2000 rw-p 00002000 08:01 560 /lib/libcom_err.so.2.1
003c2000-003e8000 r-xp 00000000 08:01 1307 /usr/lib/libk5crypto.so.3.1
003e8000-003e9000 ---p 00026000 08:01 1307 /usr/lib/libk5crypto.so.3.1
003e9000-003ea000 r--p 00026000 08:01 1307 /usr/lib/libk5crypto.so.3.1
003ea000-003eb000 rw-p 00027000 08:01 1307 /usr/lib/libk5crypto.so.3.1
003eb000-003f1000 r-xp 00000000 08:01 914 /usr/lib/libkrb5support.so.0.1
003f1000-003f2000 r--p 00005000 08:01 914 /usr/lib/libkrb5support.so.0.1
003f2000-003f3000 rw-p 00006000 08:01 914 /usr/lib/libkrb5support.so.0.1
003f3000-00400000 r-xp 00000000 08:01 4464 /usr/lib/liblber-2.4.so.2.5.1
00400000-00401000 r--p 0000c000 08:01 4464 /usr/lib/liblber-2.4.so.2.5.1
00401000-00402000 rw-p 0000d000 08:01 4464 /usr/lib/liblber-2.4.so.2.5.1
00402000-0041a000 r-xp 00000000 08:01 4704 /usr/lib/libsasl2.so.2.0.23
0041a000-0041b000 r--p 00017000 08:01 4704 /usr/lib/libsasl2.so.2.0.23
0041b000-0041c000 rw-p 00018000 08:01 4704 /usr/lib/libsasl2.so.2.0.23
0041c000-004bf000 r-xp 00000000 08:01 4258 /usr/lib/libgnutls.so.26.14.10
004bf000-004c3000 r--p 000a2000 08:01 4258 /usr/lib/libgnutls.so.26.14.10
004c3000-004c4000 rw-p 000a6000 08:01 4258 /usr/lib/libgnutls.so.26.14.10
004c4000-004d0000 r-xp 00000000 08:01 328860 /usr/lib/python2.6/dist-packages/mx/DateTime/mxDateTime/mxDateTime.so
004d0000-004d1000 r--p 0000b000 08:01 328860 /usr/lib/python2.6/dist-packages/mx/DateTime/mxDateTime/mxDateTime.so
004d1000-004d2000 rw-p 0000c000 08:01 328860 /usr/lib/python2.6/dist-packages/mx/DateTime/mxDateTime/mxDateTime.so
004d2000-004e5000 r-xp 00000000 08:01 606 /lib/tls/i686/cmov/libnsl-2.10.1.so
004e5000-004e6000 r--p 00012000 08:01 606 /lib/tls/i686/cmov/libnsl-2.10.1.so
004e6000-004e7000 rw-p 00013000 08:01 606 /lib/tls/i686/cmov/libnsl-2.10.1.so
004e7000-004e9000 rw-p 00000000 00:00 0
004e9000-004f2000 r-xp 00000000 08:01 632 /lib/tls/i686/cmov/libnss_nis-2.10.1.so
004f2000-004f3000 r--p 00008000 08:01 632 /lib/tls/i686/cmov/libnss_nis-2.10.1.so
004f3000-004f4000 rw-p 00009000 08:01 632 /lib/tls/i686/cmov/libnss_nis-2.10.1.so
004f9000-0053a000 r-xp 00000000 08:01 3086 /lib/i686/cmov/libssl.so.0.9.8
0053a000-0053b000 ---p 00041000 08:01 3086 /lib/i686/cmov/libssl.so.0.9.8
0053b000-0053c000 r--p 00041000 08:01 3086 /lib/i686/cmov/libssl.so.0.9.8
0053c000-0053f000 rw-p 00042000 08:01 3086 /lib/i686/cmov/libssl.so.0.9.8
0053f000-005b8000 r-xp 00000000 08:01 581 /lib/libgcrypt.so.11.5.2
005b8000-005b9000 r--p 00078000 08:01 581 /lib/libgcrypt.so.11.5.2
005b9000-005bb000 rw-p 00079000 08:01 581 /lib/libgcrypt.so.11.5.2
005bb000-005d7000 r-xp 00000000 08:01 3077 /lib/libgcc_s.so.1
005d7000-005d8000 r--p 0001b000 08:01 3077 /lib/libgcc_s.so.1
005d8000-005d9000 rw-p 0001c000 08:01 3077 /lib/libgcc_s.so.1
005e9000-005ea000 r-xp 00000000 00:00 0 [vdso]
00639000-00642000 r-xp 00000000 08:01 595 /lib/tls/i686/cmov/libcrypt-2.10.1.so
00642000-00643000 r--p 00008000 08:01 595 /lib/tls/i686/cmov/libcrypt-2.10.1.so
00643000-00644000 rw-p 00009000 08:01 595 /lib/tls/i686/cmov/libcrypt-2.10.1.so
00644000-0066b000 rw-p 00000000 00:00 0
0068e000-00690000 r-xp 00000000 08:01 10509 /lib/tls/i686/cmov/libutil-2.10.1.so
00690000-00691000 r--p 00001000 08:01 10509 /lib/tls/i686/cmov/libutil-2.10.1.so
00691000-00692000 rw-p 00002000 08:01 10509 /lib/tls/i686/cmov/libutil-2.10.1.so
00697000-00699000 r-xp 00000000 08:01 266595 /usr/lib/python2.6/lib-dynload/_hashlib.so
00699000-0069a000 r--p 00001000 08:01 266595 /usr/lib/python2.6/lib-dynload/_hashlib.so
0069a000-0069b000 rw-p 00002000 08:01 266595 /usr/lib/python2.6/lib-dynload/_hashlib.so
00774000-00788000 r-xp 00000000 08:01 681 /lib/libz.so.1.2.3.3
00788000-00789000 r--p 00013000 08:01 681 /lib/libz.so.1.2.3.3
00789000-0078a000 rw-p 00014000 08:01 681 /lib/libz.so.1.2.3.3
00841000-00851000 r-xp 00000000 08:01 658 /lib/tls/i686/cmov/libresolv-2.10.1.so
00851000-00852000 r--p 00010000 08:01 658 /lib/tls/i686/cmov/libresolv-2.10.1.so
00852000-00853000 rw-p 00011000 08:01 658 /lib/tls/i686/cmov/libresolv-2.10.1.so
00853000-00855000 rw-p 00000000 00:00 0
0089f000-008a1000 r-xp 00000000 08:01 597 /lib/tls/i686/cmov/libdl-2.10.1.so
008a1000-008a2000 r--p 00001000 08:01 597 /lib/tls/i686/cmov/libdl-2.10.1.so
008a2000-008a3000 rw-p 00002000 08:01 597 /lib/tls/i686/cmov/libdl-2.10.1.so
008ea000-00905000 r-xp 00000000 08:01 67 /lib/ld-2.10.1.so
00905000-00906000 r--p 0001a000 08:01 67 /lib/ld-2.10.1.so
00906000-00907000 rw-p 0001b000 08:01 67 /lib/ld-2.10.1.so
00940000-00950000 r-xp 00000000 08:01 4761 /usr/lib/libtasn1.so.3.1.5
----------
components: Interpreter Core
messages: 101320
nosy: Carlos.Ribeiro
severity: normal
status: open
title: Interpreter crash with "double free or corruption" message
type: crash
versions: Python 2.6
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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue8176>
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