I installed italc-master-dbgsym as requested but it doesn't seem to have made any difference to the availability of debug symbols.
r...@ubuntu:~# apt-cache show italc-master-dbgsym Package: italc-master-dbgsym Priority: extra Section: x11 Installed-Size: 32 Maintainer: Ubuntu Core Developers <[email protected]> Original-Maintainer: Patrick Winnertz <[email protected]> Architecture: i386 Source: italc Version: 1:1.0.9.1-0ubuntu9 Depends: italc-master (= 1:1.0.9.1-0ubuntu9) Filename: pool/main/i/italc/italc-master-dbgsym_1.0.9.1-0ubuntu9_i386.ddeb Size: 1940 MD5sum: 54816632abcec6eb4638df68ca2754a7 SHA1: 1808cf396527fc1407f3c000dd5b008abdf2173d SHA256: 390ec3b80598bae15f0f198a5c959999d8df8cdaaad189bf7f3cd02e690598e8 Description: debug symbols for package italc-master iTALC makes it possible, to access and influence the pupils activities just from the computer of the teacher. With the help of iTALC, for example the teacher is able to see the content of the pupils screens on his screen. If a pupil needs help, the teacher can access the pupils desktop and give support from his computer. The pupil can watch all activities, the teacher is doing on his desktop. So the pupil can learn new processes. For teaching something to all pupils, you can switch into demo-mode where all screens of the pupils show the teacher-screen. Furthermore things like locking pupil's screens, killing games, power on/off clients and much more can be done with iTALC. . This package contains the software necessary to observe and control iTALC clients provided by the italc-client package. Homepage: http://italc.sourceforge.net/home.php r...@ubuntu:~# r...@ubuntu:~# italc /usr/share/themes/EdubuntuColors/gtk-2.0/gtkrc:77: Murrine configuration option "hilight_ratio" will be deprecated in future releases. Please use "highlight_sha de" instead. Illegal instruction r...@ubuntu:~# gdb italc GNU gdb 6.8-debian Copyright (C) 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i486-linux-gnu"... (no debugging symbols found) (no debugging symbols found) (gdb) run Starting program: /usr/bin/italc (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) [Thread debugging using libthread_db enabled] (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) ---Type <return> to continue, or q <return> to quit--- (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) [New Thread 0xb68d9700 (LWP 20037)] (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) ---Type <return> to continue, or q <return> to quit--- (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) ---Type <return> to continue, or q <return> to quit--- (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) /usr/share/themes/EdubuntuColors/gtk-2.0/gtkrc:77: Murrine configuration option "hilight_ratio" will be deprecated in future releases. Please use "highlight_sha de" instead. (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) Program received signal SIGILL, Illegal instruction. [Switching to Thread 0xb68d9700 (LWP 20037)] 0xb6f95e8a in ?? () from /usr/lib/italc/libitalc_core.so (gdb) x/i 0xb6f95e8a 0xb6f95e8a: pshufw $0x0,%mm7,%mm7 (gdb) bt #0 0xb6f95e8a in ?? () from /usr/lib/italc/libitalc_core.so #1 0xb6f96334 in fastQImage::scaleTo () from /usr/lib/italc/libitalc_core.so #2 0x080661a0 in ?? () #3 0x0805f338 in ?? () #4 0x0806b651 in ?? () #5 0x08079450 in ?? () #6 0x08091d17 in ?? () #7 0x0809e848 in ?? () #8 0xb6cdf775 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6 #9 0x0805bb11 in ?? () (gdb) x/i 0xb6f96334 0xb6f96334 <_ZNK10fastQImage7scaleToER6QImage+740>: cmp -0x58(%ebp),%edi (gdb) x/i 0xb6f96334-1 0xb6f96333 <_ZNK10fastQImage7scaleToER6QImage+739>: add %bh,(%ebx) (gdb) x/i 0xb6f96334-2 0xb6f96332 <_ZNK10fastQImage7scaleToER6QImage+738>: add %al,(%eax) (gdb) x/i 0xb6f96334-3 0xb6f96331 <_ZNK10fastQImage7scaleToER6QImage+737>: pop %es (gdb) x/i 0xb6f96334-4 0xb6f96330 <_ZNK10fastQImage7scaleToER6QImage+736>: clc (gdb) x/i 0xb6f96334-5 0xb6f9632f <_ZNK10fastQImage7scaleToER6QImage+735>: xchg %eax,%ebx (gdb) x/i 0xb6f96334-6 0xb6f9632e <_ZNK10fastQImage7scaleToER6QImage+734>: call *0x7f8(%ebx) (gdb) p/x $ebx $1 = 0xb6fd5ff4 (gdb) x/x 0xb6fd5ff4+0x7f8 0xb6fd67ec: 0xb6f95e00 (gdb) x/i 0xb6f95e00,40 0x28: Cannot access memory at address 0x28 (gdb) x/40i 0xb6f95e00 0xb6f95e00: push %ebp 0xb6f95e01: mov %esp,%ebp 0xb6f95e03: sub $0x48,%esp 0xb6f95e06: mov 0x1c(%ebp),%eax 0xb6f95e09: mov %edi,-0x4(%ebp) 0xb6f95e0c: mov 0x14(%ebp),%ecx 0xb6f95e0f: mov 0x20(%ebp),%edi 0xb6f95e12: mov %esi,-0x8(%ebp) 0xb6f95e15: mov 0x18(%ebp),%esi 0xb6f95e18: lea 0x0(,%eax,4),%edx 0xb6f95e1f: sub %edx,%ecx 0xb6f95e21: lea 0x0(,%edi,4),%edx 0xb6f95e28: sub %edx,%esi 0xb6f95e2a: xor %edx,%edx 0xb6f95e2c: shl $0xe,%eax 0xb6f95e2f: div %edi 0xb6f95e31: mov %ebx,-0xc(%ebp) 0xb6f95e34: call 0xb6f93007 <dsa_f...@plt+207> 0xb6f95e39: add $0x401bb,%ebx 0xb6f95e3f: movl $0x0,0xc(%esp) 0xb6f95e47: movl $0x40000000,(%esp) 0xb6f95e4e: movl $0x0,0x4(%esp) 0xb6f95e56: mov %esi,-0x18(%ebp) ---Type <return> to continue, or q <return> to quit--- 0xb6f95e59: mov %ecx,-0x14(%ebp) 0xb6f95e5c: mov %eax,0x8(%esp) 0xb6f95e60: mov %eax,-0x1c(%ebp) 0xb6f95e63: call 0xb6f91538 <__div...@plt> 0xb6f95e68: mov 0xc(%ebp),%edi 0xb6f95e6b: movl $0x40004000,-0x28(%ebp) 0xb6f95e72: mov 0x8(%ebp),%esi 0xb6f95e75: movl $0x40004000,-0x24(%ebp) 0xb6f95e7c: mov %eax,-0x20(%ebp) 0xb6f95e7f: pxor %mm0,%mm0 0xb6f95e82: movd -0x20(%ebp),%mm7 0xb6f95e86: movq -0x28(%ebp),%mm6 0xb6f95e8a: pshufw $0x0,%mm7,%mm7 0xb6f95e8e: mov -0x1c(%ebp),%ecx 0xb6f95e91: pxor %mm1,%mm1 0xb6f95e94: mov 0x1c(%ebp),%edx 0xb6f95e97: cmp $0x4000,%ecx (gdb) quit The program is running. Exit anyway? (y or n) y r...@ubuntu:~# ========================================================= It looks to me from the gdb output that the problem was found on attempt to execute the instruction at 0xb6f95e8a in library /usr/lib/italc/libitalc_core.so The instruction there is pshufw $0x0,%mm7,%mm7 The Intel 64 and IA-32 Architectures Software Developer's Manual Volume 1: Basic Architecture says (in section 5.5.3 page 152) that pshufw is a SSE instruction. Pentium II CPUs don't have SSE instructions. Its not obvious how to locate the source code resulting in the pshufw instruction. It would appear from the call stack that the offending code is called indirectly through offset 0x7f8 of a data structure used in _ZNK10fastQImage7scaleToER6QImage -- italc application crashes soon after startup https://bugs.launchpad.net/bugs/438637 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
