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https://bugs.freedesktop.org/show_bug.cgi?id=7195
Summary: Null-Pointer dereference in dri/r300/radeon_lock.c
Product: Mesa
Version: CVS
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Drivers/DRI/r300
AssignedTo: [email protected]
ReportedBy: [EMAIL PROTECTED]
Actually it dumps core in macro DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv) at line
167 in radeonGetLock(). dPriv = radeon->dri.drawable is NULL here.
Well, this seams to be the underlying reason, why running any OpenGL app with
Xgl causes a crash. I just invoked "glxinfo"
(gdb) bt
#0 radeonGetLock (radeon=0x1b00d10, flags=0) at radeon_lock.c:167
#1 0x00002b0ba1c70027 in r300FlushCmdBuf (r300=0x1b00d10,
caller=0x2b0ba1dda8f0 "r300DestroyContext") at r300_cmdbuf.c:117
#2 0x00002b0ba1c6dab6 in r300DestroyContext (driContextPriv=0x1)
at r300_context.c:464
#3 0x00002b0ba1c6120a in driDestroyContext (dpy=0x67d190, scrn=0,
contextPrivate=0x13f55b0) at dri_util.c:719
#4 0x00002b0ba0e58b6d in DestroyContext (dpy=0x67d190, gc=0x1b00b00)
at glxcmds.c:472
#5 0x00002b0ba0d355c5 in glitz_glx_fini () from /usr/lib/libglitz-glx.so.1
#6 0x00002b0ba0be37ce in xglxInitXorg ()
from /usr/lib64/xorg/modules/xgl/libxglx.so
#7 0x00002b0ba085c29a in DoMakeCurrent ()
from /usr/lib64/xorg/modules/xgl/libglxext.so
#8 0x00002b0ba086113f in __glXsetEnterLeaveServerFuncs ()
from /usr/lib64/xorg/modules/xgl/libglxext.so
#9 0x0000000000449c6e in Dispatch ()
#10 0x00000000004599b5 in main ()
(gdb) p radeon->dri
$13 = {context = 0x13f55b0, screen = 0x697be0, drawable = 0x0, hwContext = 5,
hwLock = 0x2b0baa0af000, fd = 1, drmMinor = 25}
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