Bug#496136: Gnome-Panel issues since the update of the libxml2

[Thomas Antepoth]

It seems like the crash of gnome-panel here and the hang of your menus
are related.

Ever since the upgrade as of August 22nd the gnome-panel crashes
reproducably leaving a message in the syslog even when selecting the
properties menu of the gnome-panel:


Aug 23 03:00:58 sofa kernel: gnome-panel[26736]: segfault at 18 ip
7f93249ce5c8 sp 7fff30a0e6c0 error 4 in libc-2.7.so[7f9324959000+14a000]


A backtrace reveals that the crash in libc.so.6 is right after a call
issued by libxml2:

...
Attaching to process 27391
Reading symbols from /usr/bin/gnome-panel...(no debugging symbols
found)...done.
...
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ff78865e770 (LWP 27391)]
0x00007ff7847675c8 in ?? () from /lib/libc.so.6
(gdb) bt full
#0  0x00007ff7847675c8 in ?? () from /lib/libc.so.6
No symbol table info available.
#1  0x00007ff784767a76 in free () from /lib/libc.so.6
No symbol table info available.

#2  0x00007ff7843e2065 in xmlParseEntityDecl () from /usr/lib/libxml2.so.2

No symbol table info available.
#3  0x00007ff7843e27e6 in xmlParseMarkupDecl () from /usr/lib/libxml2.so.2

No symbol table info available.
#4  0x00007ff7843e287e in ?? () from /usr/lib/libxml2.so.2
No symbol table info available.

#5  0x00007ff7843e3626 in xmlParseChunk () from /usr/lib/libxml2.so.2
No symbol table info available.

#6  0x00007ff77cfd1cd0 in ?? () from /usr/lib/librsvg-2.so.2
No symbol table info available.

#7  0x00007ff77d203d7c in ?? () from
/usr/lib/gtk-2.0/2.10.0/loaders/svg_loader.so
No symbol table info available.

#8  0x00007ff78642fc99 in gdk_pixbuf_loader_write () from
/usr/lib/libgdk_pixbuf-2.0.so.0
No symbol table info available.

#9  0x00007ff786c18530 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.



When I rolled back my libxml2 by doing

dpkg -i libxml2_2.6.32.dfsg-2_amd64.deb \
libxml2-utils_2.6.32.dfsg-2_amd64.deb


the gnome-panel is working again so that I'm not sure about whether this
is a bug in gnome-panel or libxml2. Nautilus is showing the same
behavior like gnome-panel and is working again after the downgrade of
libxml2.


Best regards


t++