 coredumpctl gdb             
           PID: 734 (tracker-extract)
           UID: 1001 (june)
           GID: 1001 (june)
        Signal: 31 (SYS)
     Timestamp: Wed 2016-12-14 22:21:32 EST (2min 51s ago)
  Command Line: /usr/lib/tracker/tracker-extract
    Executable: /usr/lib/tracker/tracker-extract
 Control Group: /
         Slice: -.slice
       Boot ID: 344247d0bbf1470e92b1ca3855d8ce48
    Machine ID: 11051830af9c49879a52cfb7a59e9fad
      Hostname: june-pc
       Storage: /var/lib/systemd/coredump/core.tracker-extract.1001.344247d0bbf1470e92b1ca3855d8ce48.734.1481772092000000000000.lz4
       Message: Process 734 (tracker-extract) of user 1001 dumped core.
                
                Stack trace of thread 887:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b7187565 __lxstat64@GLIBC_2.1 (libc.so.6)
                #2  0x00000000b7550f3a n/a (libgio-2.0.so.0)
                #3  0x00000000b754bfb3 n/a (libgio-2.0.so.0)
                #4  0x00000000b76506b4 tracker_file_get_size (libtracker-common.so.0)
                #5  0x00000000b3b12279 tracker_extract_get_metadata (libextract-jpeg.so)
                #6  0x0000000008050b7c n/a (tracker-extract)
                #7  0x0000000008050c4b n/a (tracker-extract)
                #8  0x0000000008050cb9 n/a (tracker-extract)
                #9  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #10 0x00000000b726f301 start_thread (libpthread.so.0)
                #11 0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 754:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b718f15f poll (libc.so.6)
                #2  0x00000000b72dcf70 g_poll (libglib-2.0.so.0)
                #3  0x00000000b72cd4fc n/a (libglib-2.0.so.0)
                #4  0x00000000b72cd634 g_main_context_iteration (libglib-2.0.so.0)
                #5  0x00000000b72cd690 n/a (libglib-2.0.so.0)
                #6  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #7  0x00000000b726f301 start_thread (libpthread.so.0)
                #8  0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 760:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b718f15f poll (libc.so.6)
                #2  0x00000000b72dcf70 g_poll (libglib-2.0.so.0)
                #3  0x00000000b72cd4fc n/a (libglib-2.0.so.0)
                #4  0x00000000b72cd634 g_main_context_iteration (libglib-2.0.so.0)
                #5  0x00000000b43435fb n/a (libdconfsettings.so)
                #6  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #7  0x00000000b726f301 start_thread (libpthread.so.0)
                #8  0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 803:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b7194af7 syscall (libc.so.6)
                #2  0x00000000b73149be g_cond_wait (libglib-2.0.so.0)
                #3  0x00000000b72a070d n/a (libglib-2.0.so.0)
                #4  0x00000000b72a0d28 g_async_queue_pop_unlocked (libglib-2.0.so.0)
                #5  0x00000000b72f6143 n/a (libglib-2.0.so.0)
                #6  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #7  0x00000000b726f301 start_thread (libpthread.so.0)
                #8  0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 805:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b7194af7 syscall (libc.so.6)
                #2  0x00000000b73149be g_cond_wait (libglib-2.0.so.0)
                #3  0x00000000b72a070d n/a (libglib-2.0.so.0)
                #4  0x00000000b72a0d28 g_async_queue_pop_unlocked (libglib-2.0.so.0)
                #5  0x00000000b72f6143 n/a (libglib-2.0.so.0)
                #6  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #7  0x00000000b726f301 start_thread (libpthread.so.0)
                #8  0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 811:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b7194af7 syscall (libc.so.6)
                #2  0x00000000b73149be g_cond_wait (libglib-2.0.so.0)
                #3  0x00000000b72a070d n/a (libglib-2.0.so.0)
                #4  0x00000000b72a0d28 g_async_queue_pop_unlocked (libglib-2.0.so.0)
                #5  0x00000000b72f6143 n/a (libglib-2.0.so.0)
                #6  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #7  0x00000000b726f301 start_thread (libpthread.so.0)
                #8  0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 812:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b7194af7 syscall (libc.so.6)
                #2  0x00000000b73149be g_cond_wait (libglib-2.0.so.0)
                #3  0x00000000b72a070d n/a (libglib-2.0.so.0)
                #4  0x00000000b72a0d28 g_async_queue_pop_unlocked (libglib-2.0.so.0)
                #5  0x00000000b72f6143 n/a (libglib-2.0.so.0)
                #6  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #7  0x00000000b726f301 start_thread (libpthread.so.0)
                #8  0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 813:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b7194af7 syscall (libc.so.6)
                #2  0x00000000b73149be g_cond_wait (libglib-2.0.so.0)
                #3  0x00000000b72a070d n/a (libglib-2.0.so.0)
                #4  0x00000000b72a0d28 g_async_queue_pop_unlocked (libglib-2.0.so.0)
                #5  0x00000000b72f6143 n/a (libglib-2.0.so.0)
                #6  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #7  0x00000000b726f301 start_thread (libpthread.so.0)
                #8  0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 814:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b7194af7 syscall (libc.so.6)
                #2  0x00000000b73149be g_cond_wait (libglib-2.0.so.0)
                #3  0x00000000b72a070d n/a (libglib-2.0.so.0)
                #4  0x00000000b72a0d28 g_async_queue_pop_unlocked (libglib-2.0.so.0)
                #5  0x00000000b72f6143 n/a (libglib-2.0.so.0)
                #6  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #7  0x00000000b726f301 start_thread (libpthread.so.0)
                #8  0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 815:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b7194af7 syscall (libc.so.6)
                #2  0x00000000b73149be g_cond_wait (libglib-2.0.so.0)
                #3  0x00000000b72a070d n/a (libglib-2.0.so.0)
                #4  0x00000000b72a0d28 g_async_queue_pop_unlocked (libglib-2.0.so.0)
                #5  0x00000000b72f6143 n/a (libglib-2.0.so.0)
                #6  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #7  0x00000000b726f301 start_thread (libpthread.so.0)
                #8  0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 816:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b7194af7 syscall (libc.so.6)
                #2  0x00000000b73149be g_cond_wait (libglib-2.0.so.0)
                #3  0x00000000b72a070d n/a (libglib-2.0.so.0)
                #4  0x00000000b72a0d28 g_async_queue_pop_unlocked (libglib-2.0.so.0)
                #5  0x00000000b72f6143 n/a (libglib-2.0.so.0)
                #6  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #7  0x00000000b726f301 start_thread (libpthread.so.0)
                #8  0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 831:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b7194af7 syscall (libc.so.6)
                #2  0x00000000b73149be g_cond_wait (libglib-2.0.so.0)
                #3  0x00000000b72a070d n/a (libglib-2.0.so.0)
                #4  0x00000000b72a0d28 g_async_queue_pop_unlocked (libglib-2.0.so.0)
                #5  0x00000000b72f6143 n/a (libglib-2.0.so.0)
                #6  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #7  0x00000000b726f301 start_thread (libpthread.so.0)
                #8  0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 804:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b7194af7 syscall (libc.so.6)
                #2  0x00000000b73149be g_cond_wait (libglib-2.0.so.0)
                #3  0x00000000b72a070d n/a (libglib-2.0.so.0)
                #4  0x00000000b72a0d28 g_async_queue_pop_unlocked (libglib-2.0.so.0)
                #5  0x00000000b72f6143 n/a (libglib-2.0.so.0)
                #6  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #7  0x00000000b726f301 start_thread (libpthread.so.0)
                #8  0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 755:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b718f15f poll (libc.so.6)
                #2  0x00000000b72dcf70 g_poll (libglib-2.0.so.0)
                #3  0x00000000b72cd4fc n/a (libglib-2.0.so.0)
                #4  0x00000000b72cd919 g_main_loop_run (libglib-2.0.so.0)
                #5  0x00000000b7538d55 n/a (libgio-2.0.so.0)
                #6  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #7  0x00000000b726f301 start_thread (libpthread.so.0)
                #8  0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 866:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b7194af7 syscall (libc.so.6)
                #2  0x00000000b7314b0b g_cond_wait_until (libglib-2.0.so.0)
                #3  0x00000000b72a06ba n/a (libglib-2.0.so.0)
                #4  0x00000000b72f5f99 n/a (libglib-2.0.so.0)
                #5  0x00000000b72f555a n/a (libglib-2.0.so.0)
                #6  0x00000000b726f301 start_thread (libpthread.so.0)
                #7  0x00000000b71990ae __clone (libc.so.6)
                
                Stack trace of thread 734:
                #0  0x00000000b77b8ce5 __kernel_vsyscall (linux-gate.so.1)
                #1  0x00000000b718f15f poll (libc.so.6)
                #2  0x00000000b72dcf70 g_poll (libglib-2.0.so.0)
                #3  0x00000000b72cd4fc n/a (libglib-2.0.so.0)
                #4  0x00000000b72cd919 g_main_loop_run (libglib-2.0.so.0)
                #5  0x000000000804f346 main (tracker-extract)
                #6  0x00000000b70c8196 __libc_start_main (libc.so.6)
                #7  0x000000000804f3d7 _start (tracker-extract)

GNU gdb (GDB) 7.12
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/lib/tracker/tracker-extract...(no debugging symbols found)...done.
[New LWP 887]
[New LWP 754]
[New LWP 760]
[New LWP 803]
[New LWP 805]
[New LWP 811]
[New LWP 812]
[New LWP 813]
[New LWP 814]
[New LWP 815]
[New LWP 816]
[New LWP 831]
[New LWP 804]
[New LWP 755]
[New LWP 866]
[New LWP 734]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `/usr/lib/tracker/tracker-extract'.
Program terminated with signal SIGSYS, Bad system call.
#0  0xb77b8ce5 in __kernel_vsyscall ()
[Current thread is 1 (Thread 0xacf81b40 (LWP 887))]
(gdb) t a a bt

Thread 16 (Thread 0xb455a940 (LWP 734)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0x0804f346 in main ()

Thread 15 (Thread 0xad7f4b40 (LWP 866)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0xffffffff in #7  0xffffffff in 
Thread 14 (Thread 0xb39ffb40 (LWP 755)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0xffffffff in #7  0xffffffff in #8  0xffffffff in 
Thread 13 (Thread 0xb1ffdb40 (LWP 804)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0xffffffff in #7  0xffffffff in #8  0xffffffff in 
Thread 12 (Thread 0xadff5b40 (LWP 831)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0xffffffff in #7  0xffffffff in #8  0xffffffff in 
Thread 11 (Thread 0xae7f6b40 (LWP 816)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0xffffffff in #7  0xffffffff in #8  0xffffffff in 
Thread 10 (Thread 0xaeff7b40 (LWP 815)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0xffffffff in #7  0xffffffff in #8  0xffffffff in 
Thread 9 (Thread 0xaf7f8b40 (LWP 814)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0xffffffff in #7  0xffffffff in #8  0xffffffff in 
Thread 8 (Thread 0xafff9b40 (LWP 813)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0xffffffff in #7  0xffffffff in #8  0xffffffff in 
Thread 7 (Thread 0xb07fab40 (LWP 812)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0xffffffff in #7  0xffffffff in #8  0xffffffff in 
Thread 6 (Thread 0xb0ffbb40 (LWP 811)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0xffffffff in #7  0xffffffff in #8  0xffffffff in 
Thread 5 (Thread 0xb17fcb40 (LWP 805)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0xffffffff in #7  0xffffffff in #8  0xffffffff in 
Thread 4 (Thread 0xb27feb40 (LWP 803)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0xffffffff in #7  0xffffffff in #8  0xffffffff in 
Thread 3 (Thread 0xb2fffb40 (LWP 760)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0xffffffff in #7  0xffffffff in #8  0xffffffff in 
Thread 2 (Thread 0xb431eb40 (LWP 754)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0xffffffff in #7  0xffffffff in #8  0xffffffff in 
Thread 1 (Thread 0xacf81b40 (LWP 887)):
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#0  0xffffffff in #1  0xffffffff in #2  0xffffffff in #3  0xffffffff in #4  0xffffffff in #5  0xffffffff in #6  0x08050b7c in  ()
#7  0x08050c4b in  ()
#8  0x08050cb9 in  ()
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
Python Exception <class 'SystemError'> <built-in function isinstance> returned a result with an error set: 
#9  0xffffffff in #10 0xffffffff in #11 0xffffffff in (gdb) 

