[Bug 110586] [CI][DRMTIP] igt at runner@aborted - fail - TAINT_BAD_PAGE: Bad page reference or an unexpected page flags.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110586

--- Comment #5 from Daniel Vetter <daniel at ffwll.ch> ---
Please don't do this, by usual bug filing standards our reports here are
completely unactionable and this might as well sound like a bad machine or our
driver bug.

If you want to file a bug with a foreign subsystem please make damn sure you
have solid proof it's a bug with them, and not just a hunch.

Quick comment from Dave Airlie on irc:

* airlied also guesses it's memory corrupt or some pages ending up in wrong
state
<airlied> I doubt mm is at fault
<danvet> yeah
<airlied> we marked something unvevictable and freed it?

See the dmesg backtrace

<4>[  114.390971] page dumped because: PAGE_FLAGS_CHECK_AT_PREP flag set
<1>[  114.390972] bad because of flags: 0x100000(unevictable)

drm/i915 does mark pages as unevictable, so this very much could be our own
bug. Or bad hw.

Internally it's not a big deal if our triaging doesn't really analyze the bug,
but that stops being fun as soon as we involve non-intel people.

Lakshmi, can you pls close the kernel bugzilla entry with a quick "oops sry,
need to look at this more first internally".

Thanks, Daniel

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