[Bug 90297] GPU HANG: ecode 4:0:0xfdfffffb, in Xorg, reason: Ring hung, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90297

--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
Missing cacheline in the batchbuffer, GPU dies on the MI_FLUSH following the
corrupt command stream.

Can you please double check that the bug is still reproducible with
drm-intel-nightly (kernel) and xf86-video-intel.git? Then apply

diff --git a/src/sna/kgem.c b/src/sna/kgem.c
index d190255..de9977c 100644
--- a/src/sna/kgem.c
+++ b/src/sna/kgem.c
@@ -83,7 +83,7 @@ search_snoop_cache(struct kgem *kgem, unsigned int num_pages, 
 #define DBG_NO_FAST_RELOC 0
 #define DBG_NO_HANDLE_LUT 0
 #define DBG_NO_WT 0
-#define DBG_NO_WC_MMAP 0
+#define DBG_NO_WC_MMAP 1
 #define DBG_NO_BLT_Y 0
 #define DBG_NO_SCANOUT_Y 0
 #define DBG_NO_DETILING 0

to xf86-video-intel.

This will hopefully narrow down the issue to the recent mmap(wc).

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20150504/98584c3f/attachment.html>