I reproduced this bug on my SNB laptop and Mesa master (HEAD 7850774). I found that just before crashing at brw_meta_fast_clear.c:451, it prints out the following error:
Failed to open BO for returned DRI2 buffer (1600x900, dri2 back buffer, named 11).
This is likely a bug in the X Server that will lead to a crash soon.
Which is printed at intel_process_dri2_buffer() when drm_intel_bo_gem_create_from_name() returns a NULL pointer. I added some traces to that function at libdrm and found that drmIoctl(bufmgr_gem->fd, DRM_IOCTL_GEM_OPEN, &open_arg) is returning an error, so this bug seems to be produced by the kernel driver.
My distro is Debian Jessie with a Linux kernel 3.14.
I reproduced this bug on my SNB laptop and Mesa master (HEAD 7850774). I found that just before crashing at brw_meta_ fast_clear. c:451, it prints out the following error:
Failed to open BO for returned DRI2 buffer (1600x900, dri2 back buffer, named 11).
This is likely a bug in the X Server that will lead to a crash soon.
Which is printed at intel_process_ dri2_buffer( ) when drm_intel_ bo_gem_ create_ from_name( ) returns a NULL pointer. I added some traces to that function at libdrm and found that drmIoctl( bufmgr_ gem->fd, DRM_IOCTL_GEM_OPEN, &open_arg) is returning an error, so this bug seems to be produced by the kernel driver.
My distro is Debian Jessie with a Linux kernel 3.14.
Hope this helps.