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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW] kms_flip hangs the machine"
href="https://bugs.freedesktop.org/show_bug.cgi?id=72917#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW] kms_flip hangs the machine"
href="https://bugs.freedesktop.org/show_bug.cgi?id=72917">bug 72917</a>
from <span class="vcard"><a class="email" href="mailto:ben@bwidawsk.net" title="Ben Widawsky <ben@bwidawsk.net>"> <span class="fn">Ben Widawsky</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=72917#c3">comment #3</a>)
<span class="quote">> Subtest flip-vs-panning-vs-hang seems to be the first one to fail. It fails
> on the following line:
>
> ..Test assertion failure function exec_nop, file kms_flip.c:648:
> Last errno: 5, Input/output error
> Failed assertion: drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf) ==
> 0
> Subtest flip-vs-panning-vs-hang: FAIL
>
> On, the Kernel, I see the execbuf IOTCL returning -EIO and printing the
> following message:
> [drm:i915_gem_validate_context], Context 0 tried to submit while banned
>
> Ben, Mika, any comments on this?</span >
Just making sure, that backtrace only showed up once, but you always get the
test failure, correct?
The backtrace is likely to hit after a GPU hang, and somewhat benign as longs
as the execbuf is resubmitted.
Possible to bisect?</pre>
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