Ethereal-dev: RE: [Ethereal-dev] [christmasboy_81@xxxxxxxx: Bug#199779: Subject : ethereal: se

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From: "Giles Scott" <gscott2@xxxxxxxxxxxxxxxxxx>
Date: Sat, 20 Sep 2003 17:16:05 +0100
Title: RE: [Ethereal-dev] [christmasboy_81@xxxxxxxx: Bug#199779: Subject: ethereal: segfault when adding filter _expression_]

reproduced the issue 0.9.15 GTK+ 2.2.4, WinXP.

item_str is NULL if no relation is specified, so the strcmp is failing.

Attached is a patch. and a gdb backtrace of the issue before the fix.

Cheers

Giles



-----Original Message-----
From: Guy Harris [mailto:guy@xxxxxxxxxxxx]
Sent: Thursday, July 10, 2003 10:30 PM
To: Frederic Peters
Cc: ethereal-dev@xxxxxxxxxxxx; 199779-forwarded@xxxxxxxxxxxxxxx
Subject: Re: [Ethereal-dev] [christmasboy_81@xxxxxxxx: Bug#199779:
Subject: ethereal: segfault when adding filter _expression_]



On Thursday, July 10, 2003, at 1:59 AM, Frederic Peters wrote:

> Ethereal segfaults when adding a filter _expression_. To reproduce:
>
> click on the filter button in the lower left corner of the screen
> click add _expression_
> choose any _expression_
> click ok and ethereal segfaults

Can't reproduce on Mac OS X, built with GTK+ 1.2.10, at least; perhaps
this is problem with the GTK+ 2.x support.

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This GDB was configured as "i686-pc-cygwin"...(no debugging symbols found)...
(gdb) run
Starting program: /cygdrive/c/progra~1/ethereal/ethereal.exe 
---Type <return> to continue, or q <return> to quit--- 
---Type <return> to continue, or q <return> to quit---

Program received signal SIGSEGV, Segmentation fault.
0x77c436d0 in strcmp () from /cygdrive/c/WINDOWS/system32/msvcrt.dll
(gdb) backtrace
#0  0x77c436d0 in strcmp () from /cygdrive/c/WINDOWS/system32/msvcrt.dll
#1  0x006bc357 in libpangowin32_1_0_0_dll_iname ()
#2  0x62758f29 in g_cclosure_marshal_VOID__VOID () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#3  0x62744102 in g_closure_invoke () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#4  0x62758b64 in signal_emit_unlocked_R () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#5  0x62757d4a in g_signal_emit_valist () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#6  0x62757fa6 in g_signal_emit () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#7  0x00c211b8 in gtk_button_clicked () from /cygdrive/c/progra~1/ethereal/libgtk-win32-2.0-0.dll
#8  0x00c2259a in gtk_real_button_released () from /cygdrive/c/progra~1/ethereal/libgtk-win32-2.0-0.dll
#9  0x62758f29 in g_cclosure_marshal_VOID__VOID () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#10 0x62744949 in g_type_class_meta_marshal () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#11 0x62744102 in g_closure_invoke () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#12 0x62758522 in signal_emit_unlocked_R () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#13 0x62757d4a in g_signal_emit_valist () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#14 0x62757fa6 in g_signal_emit () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#15 0x00c21108 in gtk_button_released () from /cygdrive/c/progra~1/ethereal/libgtk-win32-2.0-0.dll
#16 0x00c223d4 in gtk_button_button_release () from /cygdrive/c/progra~1/ethereal/libgtk-win32-2.0-0.dll
#17 0x00cff01a in _gtk_marshal_BOOLEAN__BOXED ()
#18 0x62744949 in g_type_class_meta_marshal () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#19 0x62744102 in g_closure_invoke () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#20 0x627586fd in signal_emit_unlocked_R () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#21 0x62757b28 in g_signal_emit_valist () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#22 0x62757fa6 in g_signal_emit () from /cygdrive/c/progra~1/ethereal/libgobject-2.0-0.dll
#23 0x00e0e49b in gtk_widget_event_internal ()
#24 0x00cfed6c in gtk_propagate_event ()
#25 0x00cfda26 in gtk_main_do_event ()
#26 0x003bea0e in gdk_event_dispatch ()
#27 0x672de67e in g_main_dispatch () from /cygdrive/c/progra~1/ethereal/libglib-2.0-0.dll
#28 0x672dec9f in g_main_context_iterate () from /cygdrive/c/progra~1/ethereal/libglib-2.0-0.dll
#29 0x672db959 in g_main_loop_run () from /cygdrive/c/progra~1/ethereal/libglib-2.0-0.dll
#30 0x00cfd109 in gtk_main ()
#31 0x0068212c in libpangowin32_1_0_0_dll_iname ()
#32 0x0068285f in libpangowin32_1_0_0_dll_iname ()
#33 0x0067f9c6 in libpangowin32_1_0_0_dll_iname ()
#34 0x77e814c7 in KERNEL32!GetCurrentDirectoryW () from /cygdrive/c/WINDOWS/system32/kernel32.dll
(gdb)

Attachment: dfilter_expr_dlg.c.diff
Description: Binary data