.
Thread 4 (process 6038):
#0  0x00b47416 in __kernel_vsyscall ()
No symbol table info available.
#1  0x004be393 in __lll_lock_wait_private ()
    at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/lowlevellock.S:95
No locals.
#2  0x004223a7 in _L_lock_13042 () at fmtmsg.c:211
No symbol table info available.
#3  0x0042222f in buffered_vfprintf (s=0x53d580, 
    format=<value optimized out>, args=<value optimized out>)
    at vfprintf.c:2168
	__self = (void *) 0xb1190b70
	_buffer = {__routine = 0x20f9b0 <__funlockfile>, __arg = 0x53d580, 
  __canceltype = 0, __prev = 0x0}
	_avail = 1
	buf = "python2.7: ../../src/xcb_io.c:249: process_responses: Assertion `(((long) (dpy->last_request_read) - (long) (dpy->request)) <= 0)' failed.\n\000$�\030�H�\030�x\000�\n��\030��_�\000\000\000�\n\000\000\000\000��\030�6)�\000\000\000�\n\002\000\000\000H�\030�\024g�\000\000\000\000\000\232\231\231\231"...
	helper = {_f = {file = {_flags = -72515580, 
      _IO_read_ptr = 0xa <Address 0xa out of bounds>, 
      _IO_read_end = 0x53cff4 "|�\025", _IO_read_base = 0xb118f5ac "", 
      _IO_write_base = 0xb118cff0 "python2.7: ../../src/xcb_io.c:249: process_responses: Assertion `(((long) (dpy->last_request_read) - (long) (dpy->request)) <= 0)' failed.\n", _IO_write_ptr = 0xb118d07b "", 
      _IO_write_end = 0xb118eff0 "\004\200��\n", 
      _IO_buf_base = 0xb118f5ac "", _IO_buf_end = 0x5197c4 "' failed.\n", 
      _IO_save_base = 0xa <Address 0xa out of bounds>, _IO_backup_base = 0x0, 
      _IO_save_end = 0x384e93 "\203�L[^_]�\220\215t&", _markers = 0xa31da00, 
      _chain = 0xa, _fileno = 65015005, _flags2 = 0, _old_offset = 0, 
      _cur_column = 0, _vtable_offset = 0 '\0', _shortbuf = "", _lock = 0x0, 
      _offset = 28, _codecvt = 0x0, _wide_data = 0x53e3c0, 
      _freeres_list = 0xa714a50, _freeres_buf = 0xb118f068, 
      _freeres_size = 175470480, _mode = -1, 
      _unused2 = "\000\000\000\000�oa\000�w�\n����\000\000\000\000\000\000\000\000�\0233\n�\000\000\000\000\000\000\000\000\000\000"}, vtable = 0x53c480}, 
  _put_stream = 0x53d580, lock = {lock = 0, cnt = 32, owner = 0x0}}
	hp = Unhandled dwarf expression opcode 0x9f
.
Thread 3 (process 6008):
#0  0x00b47416 in __kernel_vsyscall ()
No symbol table info available.
#1  0x0020b48c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
No locals.
#2  0x07dd6654 in WTF::ThreadCondition::wait (this=0xb2ca4de8, 
    mutex=@0xb2ca4dd0)
    at ../Source/JavaScriptCore/wtf/ThreadingPthreads.cpp:97
No locals.
#3  0x074a94d2 in WebCore::IconDatabase::syncThreadMainLoop (this=0xb2ca4d80)
   from /usr/lib/libwebkitgtk-1.0.so.0
	didAnyWork = <value optimized out>
	shouldReenableSuddenTermination = false
#4  0x074aacef in WebCore::IconDatabase::iconDatabaseSyncThread (
    this=0xb2ca4d80) from /usr/lib/libwebkitgtk-1.0.so.0
	journalFilename = {
  m_impl = {<WTF::FastAllocBase> = {<No data fields>}, m_ptr = 0xb2ca7f30}}
#5  0x074aae3d in WebCore::IconDatabase::iconDatabaseSyncThreadStart (
    vIconDatabase=0xb2ca4d80) from /usr/lib/libwebkitgtk-1.0.so.0
	iconDB = (WebCore::IconDatabase *) 0xb2ca4d80
#6  0x07dd632f in threadEntryPoint (contextData=0xb2ca14d8)
    at ../Source/JavaScriptCore/wtf/Threading.cpp:65
	context = (WTF::NewThreadContext *) 0xb2ca14d8
	entryPoint = (
    ThreadFunction) 0x74aae20 <WebCore::IconDatabase::iconDatabaseSyncThreadStart(void*)>
	data = <value optimized out>
#7  0x00206e99 in start_thread (arg=0xb2c76b70) at allocatestack.c:304
	pd = (struct pthread *) 0xb2c76b70
	unwind_buf = {cancel_jmp_buf = {{jmp_buf = {2195444, 0, 4001536, 
        -1295555432, 955590086, -152136029}, mask_was_saved = 0}}, priv = {
    pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
      canceltype = 0}}}
	not_first_call = <value optimized out>
	robust = <value optimized out>
	pagesize_m1 = <value optimized out>
	sp = <value optimized out>
	freesize = <value optimized out>
	__PRETTY_FUNCTION__ = "start_thread"
#8  0x004b05ae in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
.
Thread 2 (process 6007):
#0  0x00b47416 in __kernel_vsyscall ()
No symbol table info available.
#1  0x0020b48c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
No locals.
#2  0x07dc39d7 in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7f954e0)
    at ../Source/JavaScriptCore/wtf/FastMalloc.cpp:1476
No locals.
#3  0x07dc3a1d in WTF::TCMalloc_PageHeap::runScavengerThread (
    context=0x7f954e0) at ../Source/JavaScriptCore/wtf/FastMalloc.cpp:1476
No locals.
#4  0x00206e99 in start_thread (arg=0xb359fb70) at allocatestack.c:304
	pd = (struct pthread *) 0xb359fb70
	unwind_buf = {cancel_jmp_buf = {{jmp_buf = {2195444, 0, 4001536, 
        -1285950312, 97854917, -152136029}, mask_was_saved = 0}}, priv = {
    pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
      canceltype = 0}}}
	not_first_call = <value optimized out>
	robust = <value optimized out>
	pagesize_m1 = <value optimized out>
	sp = <value optimized out>
	freesize = <value optimized out>
	__PRETTY_FUNCTION__ = "start_thread"
#5  0x004b05ae in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
.
Thread 1 (process 6004):
#0  0x00b47416 in __kernel_vsyscall ()
No symbol table info available.
#1  0x0040acb1 in *__GI_raise (sig=6)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
	resultvar = <value optimized out>
	resultvar = <value optimized out>
	pid = 5492724
	selftid = 6004
#2  0x0040e18e in *__GI_abort () at abort.c:59
	save_stage = Unhandled dwarf expression opcode 0x9f