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[tor-bugs] #8575 [Stem]: Integ tests segfault python 3

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Subject: [tor-bugs] #8575 [Stem]: Integ tests segfault python 3
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Date: Sat, 23 Mar 2013 19:01:56 -0000
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#8575: Integ tests segfault python 3
---------------------+------------------------------------------------------
 Reporter:  atagar   |          Owner:  atagar
     Type:  defect   |         Status:  new   
 Priority:  normal   |      Milestone:        
Component:  Stem     |        Version:        
 Keywords:  testing  |         Parent:        
   Points:           |   Actualpoints:        
---------------------+------------------------------------------------------
 Both stem's unit and integration tests presently pass under the python 3.x
 series. However, when the integration tests are finished running python
 spews a dump and segfaults...

 {{{
 *** glibc detected *** python3: munmap_chunk(): invalid pointer:
 0x0a1ca610 ***
 ======= Backtrace: =========
 /lib/i386-linux-gnu/libc.so.6(+0x6f751)[0x302751]
 /lib/i386-linux-gnu/libc.so.6(+0x6fefe)[0x302efe]
 python3(main+0x19e)[0x805c08e]
 /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x2a9e37]
 python3[0x805be51]
 ======= Memory map: ========
 00110000-00117000 r-xp 00000000 08:05 6037079    /lib/i386-linux-
 gnu/librt-2.13.so
 00117000-00118000 r--p 00006000 08:05 6037079    /lib/i386-linux-
 gnu/librt-2.13.so
 00118000-00119000 rw-p 00007000 08:05 6037079    /lib/i386-linux-
 gnu/librt-2.13.so
 00119000-0011b000 r-xp 00000000 00:13 3451724
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/grp.cpython-33m.so
 0011b000-0011c000 r--p 00001000 00:13 3451724
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/grp.cpython-33m.so
 0011c000-0011d000 rw-p 00002000 00:13 3451724
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/grp.cpython-33m.so
 0011d000-00120000 r-xp 00000000 00:13 3451742
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/_posixsubprocess
 .cpython-33m.so
 00120000-00121000 r--p 00002000 00:13 3451742
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/_posixsubprocess
 .cpython-33m.so
 00121000-00122000 rw-p 00003000 00:13 3451742
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/_posixsubprocess
 .cpython-33m.so
 00122000-00135000 r-xp 00000000 08:05 6030228    /lib/i386-linux-
 gnu/libz.so.1.2.3.4
 00135000-00136000 r--p 00012000 08:05 6030228    /lib/i386-linux-
 gnu/libz.so.1.2.3.4
 00136000-00137000 rw-p 00013000 08:05 6030228    /lib/i386-linux-
 gnu/libz.so.1.2.3.4
 00137000-0013a000 r-xp 00000000 00:13 3451722
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/fcntl.cpython-33m.so
 0013a000-0013b000 r--p 00002000 00:13 3451722
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/fcntl.cpython-33m.so
 0013b000-0013c000 rw-p 00003000 00:13 3451722
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/fcntl.cpython-33m.so
 0013c000-00140000 r-xp 00000000 00:13 3451766
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/binascii.cpython-33m.so
 00140000-00141000 r--p 00003000 00:13 3451766
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/binascii.cpython-33m.so
 00141000-00142000 rw-p 00004000 00:13 3451766
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/binascii.cpython-33m.so
 00142000-00147000 r-xp 00000000 00:13 3451740
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/_csv.cpython-33m.so
 00147000-00148000 r--p 00004000 00:13 3451740
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/_csv.cpython-33m.so
 00148000-0014a000 rw-p 00005000 00:13 3451740
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/_csv.cpython-33m.so
 0014a000-001ef000 r-xp 00000000 00:13 3451720
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/unicodedata.cpython-
 33m.so
 001ef000-001f0000 r--p 000a4000 00:13 3451720
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/unicodedata.cpython-
 33m.so
 001f0000-00206000 rw-p 000a5000 00:13 3451720
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/unicodedata.cpython-
 33m.so
 00206000-0020c000 r-xp 00000000 08:05 6037082    /lib/i386-linux-
 gnu/libnss_compat-2.13.so
 0020c000-0020d000 r--p 00005000 08:05 6037082    /lib/i386-linux-
 gnu/libnss_compat-2.13.so
 0020d000-0020e000 rw-p 00006000 08:05 6037082    /lib/i386-linux-
 gnu/libnss_compat-2.13.so
 0020e000-00221000 r-xp 00000000 08:05 6037076    /lib/i386-linux-
 gnu/libnsl-2.13.so
 00221000-00222000 r--p 00012000 08:05 6037076    /lib/i386-linux-
 gnu/libnsl-2.13.so
 00222000-00223000 rw-p 00013000 08:05 6037076    /lib/i386-linux-
 gnu/libnsl-2.13.so
 00223000-00225000 rw-p 00000000 00:00 0
 00225000-0022f000 r-xp 00000000 08:05 6037070    /lib/i386-linux-
 gnu/libnss_files-2.13.so
 0022f000-00230000 r--p 00009000 08:05 6037070    /lib/i386-linux-
 gnu/libnss_files-2.13.so
 00230000-00231000 rw-p 0000a000 08:05 6037070    /lib/i386-linux-
 gnu/libnss_files-2.13.so
 00239000-00255000 r-xp 00000000 08:05 6037078    /lib/i386-linux-
 gnu/ld-2.13.so
 00255000-00256000 r--p 0001b000 08:05 6037078    /lib/i386-linux-
 gnu/ld-2.13.so
 00256000-00257000 rw-p 0001c000 08:05 6037078    /lib/i386-linux-
 gnu/ld-2.13.so
 0028f000-00291000 r-xp 00000000 08:05 6037071    /lib/i386-linux-
 gnu/libutil-2.13.so
 00291000-00292000 r--p 00001000 08:05 6037071    /lib/i386-linux-
 gnu/libutil-2.13.so
 00292000-00293000 rw-p 00002000 08:05 6037071    /lib/i386-linux-
 gnu/libutil-2.13.so
 00293000-003f4000 r-xp 00000000 08:05 6037086    /lib/i386-linux-
 gnu/libc-2.13.so
 003f4000-003f5000 ---p 00161000 08:05 6037086    /lib/i386-linux-
 gnu/libc-2.13.so
 003f5000-003f7000 r--p 00161000 08:05 6037086    /lib/i386-linux-
 gnu/libc-2.13.so
 003f7000-003f8000 rw-p 00163000 08:05 6037086    /lib/i386-linux-
 gnu/libc-2.13.so
 003f8000-003fb000 rw-p 00000000 00:00 0
 0040c000-00428000 r-xp 00000000 00:13 3451955
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/_ctypes.cpython-33m.so
 00428000-0042c000 r--p 0001b000 00:13 3451955
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/_ctypes.cpython-33m.so
 0042c000-0042f000 rw-p 0001f000 00:13 3451955
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/_ctypes.cpython-33m.so
 00481000-004a5000 r-xp 00000000 08:05 6037088    /lib/i386-linux-
 gnu/libm-2.13.so
 004a5000-004a6000 r--p 00023000 08:05 6037088    /lib/i386-linux-
 gnu/libm-2.13.so
 004a6000-004a7000 rw-p 00024000 08:05 6037088    /lib/i386-linux-
 gnu/libm-2.13.so
 004ed000-004ee000 r-xp 00000000 00:00 0          [vdso]
 0058c000-0058e000 r-xp 00000000 08:05 6037081    /lib/i386-linux-
 gnu/libdl-2.13.so
 0058e000-0058f000 r--p 00001000 08:05 6037081    /lib/i386-linux-
 gnu/libdl-2.13.so
 0058f000-00590000 rw-p 00002000 08:05 6037081    /lib/i386-linux-
 gnu/libdl-2.13.so
 005f6000-005f8000 r-xp 00000000 00:13 3451709
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/atexit.cpython-33m.so
 005f8000-005f9000 r--p 00001000 00:13 3451709
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/atexit.cpython-33m.so
 005f9000-005fa000 rw-p 00002000 00:13 3451709
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/atexit.cpython-33m.so
 005fa000-0072c000 r-xp 00000000 08:05 6037050    /lib/libcrypto.so.0.9.8
 0072c000-00734000 r--p 00132000 08:05 6037050    /lib/libcrypto.so.0.9.8
 00734000-00743000 rw-p 0013a000 08:05 6037050    /lib/libcrypto.so.0.9.8
 00743000-00746000 rw-p 00000000 00:00 0
 007e9000-007eb000 r-xp 00000000 00:13 3451702
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/_bisect.cpython-33m.so
 007eb000-007ec000 r--p 00001000 00:13 3451702
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/_bisect.cpython-33m.so
 007ec000-007ed000 rw-p 00002000 00:13 3451702
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/_bisect.cpython-33m.so
 00834000-00837000 r-xp 00000000 00:13 3451758
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/termios.cpython-33m.so
 00837000-00838000 r--p 00002000 00:13 3451758
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/termios.cpython-33m.so
 00838000-0083a000 rw-p 00003000 00:13 3451758
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/termios.cpython-33m.so
 00940000-00946000 r-xp 00000000 00:13 3451684
 /home/atagar/Python-3.3.0/build/lib.linux-i686-3.3/_struct.cpython-
 33m.soAborted
 }}}

 This happens to me with both Ubuntu's python3 deb (version 3.2) and
 version 3.3 I compiled from source while trying to sort
 [http://bugs.python.org/issue17105 a similar issue out with upstream].

 At this point I'm kinda resigned to the conclusion that the 3.x series is
 still simply somewhat unstable. As Guido once said in a presentation I
 attended "If you get a stacktrace then that's your problem. If you manage
 to get python to segfault then that's almost certainly mine."

 That said, if someone wants to contact upstream and troubleshoot these
 latest python 3.x segfaults then the help would be greatly appreciated!

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8575>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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