* [Bug 31617] New: Radeon/Compiz: 'failed to attach dri2 front buffer', error case not handled
@ 2010-11-14 12:10 bugzilla-daemon
2010-11-15 6:37 ` [Bug 31617] " bugzilla-daemon
0 siblings, 1 reply; 2+ messages in thread
From: bugzilla-daemon @ 2010-11-14 12:10 UTC (permalink / raw)
To: dri-devel
https://bugs.freedesktop.org/show_bug.cgi?id=31617
Summary: Radeon/Compiz: 'failed to attach dri2 front buffer',
error case not handled
Product: Mesa
Version: 7.9
Platform: x86-64 (AMD64)
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/DRI/R600
AssignedTo: dri-devel@lists.freedesktop.org
ReportedBy: daniel.lichtenberger@gmail.com
Created an attachment (id=40267)
--> (https://bugs.freedesktop.org/attachment.cgi?id=40267)
backtrace
System: Fedora 14, Radeon 4850, x86_64.
Using the system's mesa-dri-drivers package Compiz frequently crashes while
resizing windows. The backtrace (attached) and the error message, "failed to
attach dri2 front buffer XX", point to radeon_update_renderbuffers in
radeon_common_context.c around line 745:
bo = radeon_bo_open(...);
if (bo == NULL) {
fprintf(stderr, "failed to attach %s %d\n",
regname, buffers[i].name);
}
ret = radeon_bo_get_tiling(bo, &tiling_flags, &pitch);
An error message is printed when 'bo' could not be allocated, but bo is then
happily dereferenced in radeon_bo_get_tiling afterwards. Working around the
null pointer dereference (e.g. by adding a 'continue' in the "if bo==NULL"
block) fixes the crash for me and I haven't seen visual artifacts yet, although
the error message is printed from time to time while running Compiz.
The same stacktrace was logged by several people over at
https://bugzilla.redhat.com/show_bug.cgi?id=568593.
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* [Bug 31617] Radeon/Compiz: 'failed to attach dri2 front buffer', error case not handled
2010-11-14 12:10 [Bug 31617] New: Radeon/Compiz: 'failed to attach dri2 front buffer', error case not handled bugzilla-daemon
@ 2010-11-15 6:37 ` bugzilla-daemon
0 siblings, 0 replies; 2+ messages in thread
From: bugzilla-daemon @ 2010-11-15 6:37 UTC (permalink / raw)
To: dri-devel
https://bugs.freedesktop.org/show_bug.cgi?id=31617
Alex Deucher <agd5f@yahoo.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #1 from Alex Deucher <agd5f@yahoo.com> 2010-11-14 22:37:36 PST ---
Thanks. Fix pushed to master:
ef0720758e5ba34d0d163bdf5efc6e8dabd65aa8
and 7.9:
9b1ac4d127805f6a14415596e4a557fad3d570a5
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