[Konsole-devel] [Bug 202293] New: XFree bug in Qt message processing

[Octavian]

https://bugs.kde.org/show_bug.cgi?id=202293

           Summary: XFree bug in Qt message processing
           Product: konsole
           Version: unspecified
          Platform: Unlisted Binaries
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: crash
          Priority: NOR
         Component: general
        AssignedTo: konsole-devel at kde.org
        ReportedBy: octavian.voicu at gmail.com


Application that crashed: konsole
Version of the application: 2.3
KDE Version: 4.2.98 (KDE 4.2.98 (KDE 4.3 RC3))
Qt Version: 4.5.0
Operating System: Linux 2.6.28-14-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
The crash occured while I was dragging a file from an Ark window, while
alt+tabbing to search for where to drop it. I had the mouse button pressed when
it crashed (still dragging).

 -- Backtrace:
Application: Konsole (konsole), signal: Aborted
[Current thread is 0 (LWP 4289)]

Thread 2 (Thread 0x7f77b2f7d950 (LWP 4290)):
#0  __lll_lock_wait_private () at
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:91
#1  0x00007f77b99f0025 in _L_lock_4783 () from /lib/libc.so.6
#2  0x00007f77b99ec26b in *__GI___libc_free (mem=0x7f77b9cdfa00) at
malloc.c:3623
#3  0x00007f77b72c9b2a in g_source_unref_internal (source=0x1189000,
context=0x1188540, have_lock=0) at
/build/buildd/glib2.0-2.20.1/glib/gmain.c:1193
#4  0x00007f77bc608932 in ~QEventDispatcherGlib (this=0x11883e0) at
kernel/qeventdispatcher_glib.cpp:285
#5  0x00007f77bc4f5a1c in QThreadPrivate::finish (arg=<value optimized out>) at
thread/qthread_unix.cpp:213
#6  0x00007f77bc4f595a in QThreadPrivate::start (arg=0xe86d20) at
/usr/include/pthread.h:533
#7  0x00007f77b85ac3ba in start_thread (arg=<value optimized out>) at
pthread_create.c:297
#8  0x00007f77b9a57fcd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f77beaf2750 (LWP 4289)):
[KCrash Handler]
#5  0x00007f77b99a4fb5 in *__GI_raise (sig=<value optimized out>) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#6  0x00007f77b99a6bc3 in *__GI_abort () at abort.c:88
#7  0x00007f77b99e4228 in __libc_message (do_abort=2, fmt=0x7f77b9aae488 "***
glibc detected *** %s: %s: 0x%s ***\n") at
../sysdeps/unix/sysv/linux/libc_fatal.c:170
#8  0x00007f77b99e9cb8 in malloc_printerr (action=2, str=0x7f77b9aaba86
"free(): invalid pointer", ptr=<value optimized out>) at malloc.c:5994
#9  0x00007f77b99ec276 in *__GI___libc_free (mem=0x7f77b9aa48a0) at
malloc.c:3625
#10 0x00007f77baf08999 in XFree (data=0x10c1) at ../../src/XlibInt.c:3049
#11 0x00007f77bb84508d in QX11Data::xdndHandleEnter (this=<value optimized
out>, xe=<value optimized out>) at kernel/qdnd_x11.cpp:826
#12 0x00007f77bb8256d3 in QApplication::x11ClientMessage (this=<value optimized
out>, w=0x18e5b20, event=0x7fffc6b2fe60, passive_only=255) at
kernel/qapplication_x11.cpp:3114
#13 0x00007f77bb838b66 in QApplication::x11ProcessEvent (this=0x7fffc6b30240,
event=0x7fffc6b2fe60) at kernel/qapplication_x11.cpp:3675
#14 0x00007f77bb861464 in x11EventSourceDispatch (s=0xe81e20, callback=0,
user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#15 0x00007f77b72ca20a in IA__g_main_context_dispatch (context=0xe81920) at
/build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#16 0x00007f77b72cd8e0 in g_main_context_iterate (context=0xe81920, block=1,
dispatch=1, self=<value optimized out>) at
/build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#17 0x00007f77b72cda7c in IA__g_main_context_iteration (context=0xe81920,
may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#18 0x00007f77bc607e6f in QEventDispatcherGlib::processEvents (this=0xe46f40,
flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:323
#19 0x00007f77bb860bef in QGuiEventDispatcherGlib::processEvents (this=0x10c1,
flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#20 0x00007f77bc5dd002 in QEventLoop::processEvents (this=<value optimized
out>, flags={i = -961347248}) at kernel/qeventloop.cpp:149
#21 0x00007f77bc5dd3cd in QEventLoop::exec (this=0x7fffc6b30190, flags={i =
-961347168}) at kernel/qeventloop.cpp:200
#22 0x00007f77bc5df694 in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:880
#23 0x00007f77be70d2f4 in kdemain () from /usr/lib/libkdeinit4_konsole.so
#24 0x00007f77b99905a6 in __libc_start_main (main=0x400870 <_start+240>,
argc=7, ubp_av=0x7fffc6b30498, init=0x4008a0 <__libc_csu_init>, fini=<value
optimized out>, rtld_fini=<value optimized out>, 
    stack_end=0x7fffc6b30488) at libc-start.c:220
#25 0x00000000004007a9 in _start ()

Reported using DrKonqi

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