rdesktop-vrdp segfaults in XPutImage on Debian Squeeze/i386

[Maximilian Gass]

I created a Debian package for rdesktop-vrdp from VirtualBox 3.1.6. It works fine on a Debian Squeeze amd64 workstation, but segfaults after login on a Debian Squeeze i386 live system I am creating.

I have localized the problem in ui_desktop_restore in xwin.c. The call to XCreateImage returns NULL sometimes and then XPutImage triggers a segmentation fault.

(gdb) bt
#0  0xb75f7d92 in XPutImage (dpy=0x9cad588, d=4194309, gc=0x9cc4688, image=0x0, req_xoffset=0, req_yoffset=0, x=184, 
    y=89, req_width=432, req_height=234) at ../../src/PutImage.c:967
#1  0x080523b8 in ui_desktop_restore (offset=0, x=184, y=89, cx=432, cy=234) at xwin.c:3595
#2  0x0806726f in process_desksave (s=0x80c0600, num_orders=43) at orders.c:384
#3  process_orders (s=0x80c0600, num_orders=43) at orders.c:1256
#4  0x0806c77e in rdp5_process (s=0x80c0600) at rdp5.c:94
#5  0x08063528 in rdp_recv (type=0xbfbb84ef "") at rdp.c:110
#6  0x08063cb4 in rdp_loop (deactivated=0xbfbb888c, ext_disc_reason=0xbfbb8888) at rdp.c:1420
#7  0x0806489c in rdp_main_loop (deactivated=0xbfbb888c, ext_disc_reason=0xbfbb8888) at rdp.c:1405
#8  0x0804df46 in main (argc=12, argv=0xbfbb8934) at rdesktop.c:994

If you need more details, please let me know.