Bug#293796: libgtk2.0-0: tries to use shared memory on remote display

[Rich McAllister]

Package: libgtk2.0-0
Version: 2.6.1-2
Severity: important



To reproduce, set DISPLAY to a remote X display (naturally make sure
that display is listening on TCP, and make sure xauth permissions
are ok.)  The remote display I was using was XFree86 4.2.1
(running on a woody system, using the backports debs) but
I doubt it's X release dependent.  Have GNOME installed and try
to run /usr/games/sol (lots of other apps fail, but this one
is easy.)  The initial display comes up and then sol crashes with

The program 'sol' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadImplementation (server does not implement operation)'.
  (Details: serial 1094 error_code 17 request_code 155 minor_code 10)

using the gtk2.0-0-dbg libs, running under gdb, and using --sync gets
a stack trace starting like this:

(gdb) where
#0  gdk_x_error (display=0xbffff0d0, error=0xbffff0d0) at gdkmain-x11.c:505
#1  0x401c5614 in _XError () from /usr/X11R6/lib/libX11.so.6
#2  0x401c3b73 in _XReply () from /usr/X11R6/lib/libX11.so.6
#3  0x401beda4 in XSync () from /usr/X11R6/lib/libX11.so.6
#4  0x401bee65 in _XSyncFunction () from /usr/X11R6/lib/libX11.so.6
#5  0x40f56ac7 in XShmAttach () from /usr/X11R6/lib/libXext.so.6
#6  0x40974b42 in _gdk_image_new_for_depth (screen=0x806f0c8, 
    type=GDK_IMAGE_SHARED, visual=0x806d2b0, width=1536, height=64, depth=32)
    at gdkimage-x11.c:337
#7  0x4094a812 in allocate_scratch_images (info=0x812f6a8, n_images=1, 
    shared=1) at gdkimage.c:208
#8  0x4094a8cf in scratch_image_info_for_depth (screen=0x806f0c8, depth=0)
    at gdkimage.c:255
#9  0x4094aa0d in _gdk_image_get_scratch (screen=0x806f0c8, width=48, 
    height=48, depth=-1073745712, x=0xbffff364, y=0xbffff368) at gdkimage.c:347
#10 0x4096b595 in draw_with_pixmaps (drawable=0x812eba8, gc=0x812ebd8, 
    format_type=GDK_X11_FORMAT_EXACT_MASK, format=0x812ef40, 
    mask_format=0x812edc0, src_rgb=0x80bf208 "", src_rowstride=192, dest_x=0, 
    dest_y=0, width=48, height=48) at gdkdrawable-x11.c:1406
#11 0x4096b831 in gdk_x11_draw_pixbuf (drawable=0x812eba8, gc=0x812ebd8, 
    pixbuf=0x80b8ba0, src_x=0, src_y=0, dest_x=0, dest_y=0, width=48, 
    height=48, dither=GDK_RGB_DITHER_NORMAL, x_dither=-1073745712, 
    y_dither=-1073745712) at gdkdrawable-x11.c:1471
#12 0x40945779 in IA__gdk_draw_pixbuf (drawable=0x812eba8, gc=0x812ebd8, 
    pixbuf=0x80b8ba0, src_x=-1073745712, src_y=-1073745712, 
    dest_x=-1073745712, dest_y=-1073745712, width=48, height=48, 
    dither=3221221584, x_dither=-1073745712, y_dither=-1073745712)
    at gdkdraw.c:785

Seems like it shouldn't be trying to use shared memory on a remote
display.  I thought there was an option or environment variable to
tell gtk not to use shared memory, but I can't find it right now.

BTW, this seemed to start with the recent upload of version 2.6.1-2 to
sarge.  Things were working fine last week...
-- System Information:
Debian Release: 3.1
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.4.25-arda-acpi
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)

Versions of packages libgtk2.0-0 depends on:
ii  libatk1.0-0              1.8.0-4         The ATK accessibility toolkit
ii  libc6                    2.3.2.ds1-20    GNU C Library: Shared libraries an
ii  libfontconfig1           2.2.3-4         generic font configuration library
ii  libfreetype6             2.1.7-2.3       FreeType 2 font engine, shared lib
ii  libglib2.0-0             2.6.1-3         The GLib library of C routines
ii  libgtk2.0-0              2.6.1-2         The GTK+ graphical user interface 
ii  libgtk2.0-bin            2.6.1-2         The programs for the GTK+ graphica
ii  libgtk2.0-common         2.6.1-2         Common files for the GTK+ graphica
ii  libjpeg62                6b-9            The Independent JPEG Group's JPEG 
ii  libpango1.0-0            1.8.0-3         Layout and rendering of internatio
ii  libpng12-0               1.2.8rel-1      PNG library - runtime
ii  libtiff4                 3.7.1-3         Tag Image File Format (TIFF) libra
ii  libx11-6                 4.3.0.dfsg.1-10 X Window System protocol client li
ii  libxcursor1              1.1.3-1         X cursor management library
ii  libxext6                 4.3.0.dfsg.1-10 X Window System miscellaneous exte
ii  libxft2                  2.1.2-6         FreeType-based font drawing librar
ii  libxi6                   4.3.0.dfsg.1-10 X Window System Input extension li
ii  libxrandr2               4.3.0.dfsg.1-10 X Window System Resize, Rotate and
ii  libxrender1              0.8.3-7         X Rendering Extension client libra
ii  xlibs                    4.3.0.dfsg.1-10 X Keyboard Extension (XKB) configu
ii  zlib1g                   1:1.2.2-4       compression library - runtime

-- no debconf information