Red Hat Bugzilla – Bug 292131
compiz triggers a NULL dereference in mesa library with VIA CLE266
Last modified: 2015-01-07 19:15:58 EST
Description of problem:
When I attempt to run compiz with X server running on an integrated graphics
hardware of the VIA EPIA chip set, X11 server receives a fatal signal after an
segmentation fault. Relevant the configuration and log files are attached
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. run X11 server configured with the attached xorg.conf on problematic hardware
2. launch compiz
$ DISPLAY=chuck.lan:0 compiz
compiz: GLX_SGIX_fbconfig is missing
compiz: Failed to manage screen: 0
compiz: No manageable screens found on display chuck.lan:0
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1211054320 (LWP 2391)]
0xb3a5094b in viaGetLock (vmesa=0x8296098, flags=0) at via_context.c:903
903 DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
#0 0xb3a5094b in viaGetLock (vmesa=0x8296098, flags=0) at via_context.c:903
#1 0xb3a54f79 in viaWaitIdle (vmesa=0x8296098, light=0 '\0') at via_ioctl.c:455
#2 0xb3a50fdf in viaDestroyContext (driContextPriv=0x8296058) at via_context.c:701
#3 0xb3a4c567 in driDestroyContext (dpy=0x0, scrn=0, contextPrivate=0x8296058)
#4 0xb7c3da14 in __glXDRIcontextDestroy (baseContext=0x8295fc8) at glxdri.c:284
#5 0xb7c058b4 in __glXFreeContext (cx=0x8295fc8) at glxext.c:249
#6 0xb7c05907 in ContextGone (cx=0x0, id=2097158) at glxext.c:126
#7 0x08072ec5 in FreeClientResources (client=0x8292018) at resource.c:783
#8 0x08083aa8 in CloseDownClient (client=0x8292018) at dispatch.c:3567
#9 0x08089b8d in Dispatch () at dispatch.c:440
#10 0x08071795 in main (argc=2, argv=0xbfd45bb4, envp=Cannot access memory at
) at main.c:445
(gdb) print sPriv
$1 = (__DRIscreenPrivate *) 0x8268fc0
(gdb) print dPriv
$2 = (__DRIdrawablePrivate *) 0x0
(gdb) disassemble $eip $eip+1
Dump of assembler code from 0xb3a5094b to 0xb3a5094c:
0xb3a5094b <viaGetLock+75>: mov 0x18(%ecx),%edx
End of assembler dump.
(gdb) print $ecx
$6 = 0
I will provide the core dump upon request.
Created attachment 196491 [details]
Created attachment 196501 [details]
Ping on this. Is there anything I can do to help solve this issue? Did I provide
Based on the date this bug was created, it appears to have been reported
during the development of Fedora 8. In order to refocus our efforts as
a project we are changing the version of this bug to '8'.
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