http://bugs.freedesktop.org/show_bug.cgi?id=25248
Summary: Machinarium crashes with current git radeon driver
Product: DRI
Version: DRI CVS
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: DRM/Radeon
AssignedTo: dri-devel@lists.sourceforge.net
ReportedBy: p...@kantaka.co.uk
Created an attachment (id=31422)
--> (http://bugs.freedesktop.org/attachment.cgi?id=31422)
Output of valgrind
With git drm-radeon-testing merged into the latest 2.6.32 prerelease & git
libdrm and mesa, Machinarium (demo available here:
http://machinarium.net/demo/) crashes on startup. It's an Adobe Flash 10
binary.
Running the binary under valgrind reveals that the crash occurs here:
==30198== Invalid read of size 4
==30198== at 0xA8CC209: radeonFlush (radeon_common.c:1131)
==30198== by 0xA8C7628: r600DeleteTexture (radeon_cmdbuf.h:118)
==30198== by 0xA94FE29: _mesa_free_texture_data (texstate.c:799)
==30198== by 0xA8E8C27: _mesa_free_context_data (context.c:977)
==30198== by 0xA8E8DF5: _mesa_destroy_context (context.c:1039)
==30198== by 0xA8CAD5D: radeonDestroyContext (radeon_common_context.c:328)
==30198== by 0xA8A2DB6: driDestroyContext (dri_util.c:545)
==30198== by 0xA8582A8: dri2DestroyContext (dri2_glx.c:95)
==30198== by 0xA832345: DestroyContext (glxcmds.c:556)
and dropping into gdb reveals that the DrawBuffer is 0x0 in the context (ctx):
(gdb) l
1126 radeon->dma.flush( ctx );
1127
1128 if (radeon->cmdbuf.cs->cdw)
1129 rcommonFlushCmdBuf(radeon, __FUNCTION__);
1130
1131 if ((ctx->DrawBuffer->Name == 0) && radeon->front_buffer_dirty)
{
1132 __DRIscreen *const screen =
radeon->radeonScreen->driScreen;
1133
1134 if (screen->dri2.loader &&
(screen->dri2.loader->base.version >= 2)
1135 && (screen->dri2.loader->flushFrontBuffer !=
NULL)) {
(gdb) p ctx
$5 = (GLcontext *) 0xa571460
(gdb) p ctx->DrawBuffer
$6 = (GLframebuffer *) 0x0
Now, this could be an Abobe bug: there are a stack of other errors from
valgrind (attached), but it seems that mesa isn't being defensive enough here
regardless. The game runs fine with LIGL_ALWAYS_SOFTWARE=1 set.
Happy to do any debugging on request, although the Machinarium demo is freely
available. (The above comes from the full game, I haven't tried the demo yet.)
NB. Is DRI/Radeon the right place for this? I'll resubmit if not.
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