Forwarding this issue from Ubuntu reporter Arun S L: https://bugs.edge.launchpad.net/ubuntu/+source/xorg-server/+bug/542357 [Problem] A crash is encountered in the routine FontFileAddFontFile() [Original Report] xorg crashes with 9.10 and ubuntu-bug and uing ppa is also not working. Says network fault in the only shell available. But apt-get is working. Backtrace: 0: /usr/bin/X (xorg_backtrace+0x3b) [0x80e880b] 1: /usr/bin/X (0x8048000+0x61aed) [0x80a9aed] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0x730410] 3: /usr/lib/libXfont.so.1 (FontFileAddFontFile+0xff) [0x5616ff] 4: /usr/lib/libXfont.so.1 (FontFileReadDirectory+0x2ef) [0x55fe2f] 5: /usr/lib/libXfont.so.1 (FontFileInitFPE+0x2f) [0x56327f] 6: /usr/bin/X (0x8048000+0x2ca23) [0x8074a23] 7: /usr/bin/X (SetDefaultFontPath+0x100) [0x8074cb0] 8: /usr/bin/X (0x8048000+0x1ec2e) [0x8066c2e] 9: /lib/tls/i686/cmov/libc.so.6 (__libc_start_main+0xe6) [0x7e0bd6] 10: /usr/bin/X (0x8048000+0x1e921) [0x8066921] Illegal instruction at address 0x8d9419 Caught signal 4 (Illegal instruction). Server aborting 00:00.0 Host bridge [0600]: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge [8086:7190] (rev 01) Subsystem: VMware Device [15ad:1976] 00:0f.0 VGA compatible controller [0300]: VMware SVGA II Adapter [15ad:0405] Subsystem: VMware SVGA II Adapter [15ad:0405] some more debug info about the instruction causing fault: its palignr!!! (gdb) display/i $pc-5 6: x/i $pc-5 0x279414: and %ah,0xf(%esi) (gdb) display/i $pc-4 7: x/i $pc-4 0x279415: movdqa %xmm3,%xmm4 (gdb) display/i $pc-3 8: x/i $pc-3 0x279416: movq %mm3,%mm4 (gdb) display/i $pc-2 9: x/i $pc-2 0x279417: outsl %ds:(%esi),(%dx) (gdb) display/i $pc-1 10: x/i $pc-1 0x279418: jecxz 0x279480 (gdb) display/i $pc 11: x/i $pc => 0x279419: palignr $0x4,%xmm2,%xmm3 (gdb) display/i $pc+1 12: x/i $pc+1 0x27941a: palignr $0x4,%mm2,%mm3 (gdb) display/i $pc+2 13: x/i $pc+2 0x27941b: cmp (%edi),%cl (gdb) display/i $pc+3 14: x/i $pc+3 0x27941c: pminub (%esi,%eiz,2),%mm0 (gdb) display/i $pc+4 15: x/i $pc+4 0x27941d: fiaddl (%esi,%eiz,2) (gdb) display/i $pc+5 16: x/i $pc+5 0x27941e: add $0x66,%al bt with source details... Program received signal SIGILL, Illegal instruction. 0x003ae419 in ?? () from /lib/tls/i686/cmov/libc.so.6 (gdb) bt #0 0x003ae419 in ?? () from /lib/tls/i686/cmov/libc.so.6 #1 0xbfffee8c in ?? () #2 0x001696ff in FontFileAddFontFile (dir=0x8245788, fontName=0xbfffee8c "-misc-fixed-medium-r-normal--20-200-75-75-c-100-iso8859-1", fileName=0xbffff28c "10x20-ISO8859-1.pcf.gz") at ../../../src/fontfile/fontdir.c:691 #3 0x00167e2f in FontFileReadDirectory ( directory=0x8242ed0 "/usr/share/fonts/X11/misc", pdir=0xbffff6cc) at ../../../src/fontfile/dirfile.c:138 #4 0x0016b27f in FontFileInitFPE (fpe=0x8245608) at ../../../src/fontfile/fontfile.c:99 #5 0x080723c3 in SetFontPathElements (npaths=<value optimized out>, paths=<value optimized out>, bad=0xbffff79c, persist=1) at ../../dix/dixfonts.c:1753 #6 0x08072680 in SetDefaultFontPath ( path=0x8215bb0 "/usr/share/fonts/X11/misc,/usr/share/fonts/X11/100dpi/:unscaled,/usr/share/fonts/X11/75dpi/:unscaled,/usr/share/fonts/X11/Type1,/usr/share/fonts/X11/100dpi,/usr/share/fonts/X11/75dpi,/var/lib/defoma/x"...) at ../../dix/dixfonts.c:1866 #7 0x08066c2e in main (argc=1, argv=0xbffff8b4, envp=0xbffff8bc) at ../../dix/main.c:225 (gdb) some more insight after painfully compiling the libc source also, took more than 3GB of downloading and compilation. somehow managed.. #0 __memcpy_ssse3 () at ../sysdeps/i386/i686/multiarch/memcpy-ssse3.S:532 #1 0xbfffee8c in ?? () #2 0x001696ff in FontFileAddFontFile (dir=0x8245788, fontName=0xbfffee8c "-misc-fixed-medium-r-normal--20-200-75-75-c-100-iso8859-1", fileName=0xbffff28c "10x20-ISO8859-1.pcf.gz") at ../../../src/fontfile/fontdir.c:691 #3 0x00167e2f in FontFileReadDirectory ( directory=0x8242ed0 "/usr/share/fonts/X11/misc", pdir=0xbffff6cc) at ../../../src/fontfile/dirfile.c:138 #4 0x0016b27f in FontFileInitFPE (fpe=0x8245608) at ../../../src/fontfile/fontfile.c:99 #5 0x080723c3 in SetFontPathElements (npaths=<value optimized out>, paths=<value optimized out>, bad=0xbffff79c, persist=1) at ../../dix/dixfonts.c:1753 #6 0x08072680 in SetDefaultFontPath ( path=0x8215bb0 "/usr/share/fonts/X11/misc,/usr/share/fonts/X11/100dpi/:unscaled,/usr/share/fonts/X11/75dpi/:unscaled,/usr/share/fonts/X11/Type1,/usr/share/fonts/X11/100dpi,/usr/share/fonts/X11/75dpi,/var/lib/defoma/x"...) at ../../dix/dixfonts.c:1866 #7 0x08066c2e in main (argc=1, argv=0xbffff8b4, envp=0xbffff8bc) at ../../dix/main.c:225 (gdb) portion of code from the file sysdeps/i386/i686/multiarch/memcpy-ssse3.S arround line 532 L(shl_4_loop): movdqa 16(%eax, %edi), %xmm2 sub $32, %ecx movdqa 32(%eax, %edi), %xmm3 movdqa %xmm3, %xmm4 palignr $4, %xmm2, %xmm3 palignr $4, %xmm1, %xmm2 lea 32(%edi), %edi movdqa %xmm2, -32(%edx, %edi) movdqa %xmm3, -16(%edx, %edi) jl L(shl_4_end) movdqa 16(%eax, %edi), %xmm2 sub $32, %ecx movdqa 32(%eax, %edi), %xmm3 movdqa %xmm3, %xmm1 Can anyone help me from here? finally did one tweek to get it working... :-) moved /lib/tls/i686/cmov/libc.so.6 out ldd picked /lib/libc.so.6 and bingo... everything is working fine now... Please let me know if there is a factual solution down the line.
dmesg: https://bugs.edge.launchpad.net/ubuntu/+source/xorg-server/+bug/542357/comments/3 Xorg.0.log: https://bugs.edge.launchpad.net/ubuntu/+source/xorg-server/+bug/542357/comments/4
sigill in memcpy sounds like a libc bug to me. closing as not our bug.
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