http://bugs.freedesktop.org/show_bug.cgi?id=22381
Summary: glxgears segfaults
Product: Mesa
Version: unspecified
Platform: x86 (IA32)
OS/Version: Linux (All)
Status: NEW
Severity: major
Priority: medium
Component: Drivers/DRI/i810
AssignedTo: [email protected]
ReportedBy: [email protected]
I'm not sure if this is the right place to be reporting this.
Running as normal user, glxgears segfaults. Running as root, it doesn't crash
but the graphical output is garbage (I can just about see the gears rotating,
but there are a lot of horizontal lines obscuring my view).
I have checked permissions on the output of "ldd `which glxgears`" but that all
seems fine (ie read access for everyone).
I have the following ArchLinux packages installed, though I'm not sure how that
relates to the actual software versions.
mesa-7.4.2-1
xorg-server-1.6.1.901-1
libgl-7.4.2-2
Some debugger output
====
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb7cfa6d0 (LWP 13099)]
0xb7b40384 in vbo_VertexAttrib4fvARB (index=1, v=0x1300)
at vbo/vbo_attrib_tmp.h:354
354 ATTR4FV(VBO_ATTRIB_GENERIC0 + index, v);
(gdb) bt
#0 0xb7b40384 in vbo_VertexAttrib4fvARB (index=1, v=0x1300)
at vbo/vbo_attrib_tmp.h:354
#1 0xb7b32da6 in neutral_VertexAttrib4fvARB (index=1, v=0x1300)
at main/vtxfmt_tmp.h:453
#2 0x0804a40d in main (argc=1, argv=0xbfdaf5d4) at glxgears.c:404
(gdb) list
349 {
350 GET_CURRENT_CONTEXT( ctx );
351 if (index == 0)
352 ATTR4FV(0, v);
353 else if (index < MAX_VERTEX_ATTRIBS)
354 ATTR4FV(VBO_ATTRIB_GENERIC0 + index, v);
355 else
356 ERROR();
357 }
358
(gdb) print v
$1 = (const GLfloat *) 0x1300
(gdb) print *v
Cannot access memory at address 0x1300
The value of v seems fairly un-pointer-like!
xorg.conf - I am using uxa here. With exa, X is rendered unusable.
===
Section "Device"
Identifier "Builtin Default intel Device 0"
Driver "intel"
Option "AccelMethod" "uxa"
EndSection
Section "Screen"
Identifier "Builtin Default intel Screen 0"
Device "Builtin Default intel Device 0"
EndSection
Section "ServerLayout"
Identifier "Builtin Default Layout"
Screen "Builtin Default intel Screen 0"
EndSection
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