[Bug 86281] brw_meta_fast_clear (brw=brw at entry=0x7fffd4097a08, fb=fb at entry=0x7fffd40fa900, buffers=buffers at entry=2, partial_clear=partial_clear at entry=false)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86281

--- Comment #38 from szunti at gmail.com ---
I have probably the same issue, the backtrace on the crash is a bit different,
but my card might not have fast_clear.

I have the

Failed to open BO for returned DRI2 buffer

message before the crash. And it doesn't happen with uxa or sna+dri3.

I have an apitrace trace that makes it happen for me in 4 out of 5 times.

run with (after decompressing)
$ glretrace replay test_case.trace

It's 14MB so I uploaded it on an external site.
(https://mega.co.nz/#!O0MHRByI!z7GywnuO8Ai_9633pmj5FY8ejzvKYBsDAri1lXFSXN0)

Software versions:
------------------
Linux 4.1.4 (Archlinux)
mesa 10.6.3
libdrm 2.4.62+106+gc8df9e7-1 (git master at the time of writing)
xf86-video-intel 2.99.917+426+g611ec7d-1 (git master) 


Hack to fix it in gdb
----------------------
After drm_intel_bo_gem_create_from_name fails(brw_context.c:1421), if I run
(from gdb) getBuffersWithFormat and drm_intel_bo_gem_create_for_name again
then it succeds.
(This is what has to be done when dri2 buffers got invalidated)



Backtrace when drm_intel_bo_gem_create_from_name fails
------------------------------------------------------
#0  intel_process_dri2_buffer (buffer_name=0x7ffff21ddf75 "dri2 back buffer",
rb=0xaf2cb0, buffer=0xaf2b50, drawable=0xa76ad0, brw=0x7ffff7fd1038)
    at brw_context.c:1423
#1  intel_update_dri2_buffers (drawable=0xa76ad0, brw=0x7ffff7fd1038) at
brw_context.c:1226
#2  intel_update_renderbuffers (context=context at entry=0xbaea90,
drawable=drawable at entry=0xa76ad0) at brw_context.c:1248
#3  0x00007ffff203d5b1 in intel_prepare_render (brw=brw at entry=0x7ffff7fd1038)
at brw_context.c:1267
#4  0x00007ffff2031290 in brw_clear (ctx=0x7ffff7fd1038, mask=18) at
brw_clear.c:234
#5  0x00000000004e8c96 in ?? ()
#6  0x000000000040bd1d in ?? ()
#7  0x000000000040c37c in ?? ()
#8  0x0000000000407b05 in ?? ()
#9  0x00007ffff61e0790 in __libc_start_main () from /usr/lib/libc.so.6
#10 0x00000000004095e9 in _start ()

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