[Bug 111512] [snb] GPU HANG in gnome-shell (after swap?)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111512

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|i915 0000:00:02.0: GPU      |[snb] GPU HANG in
                   |HANG: ecode 6:1:0xfffffffe, |gnome-shell (after swap?)
                   |in gnome-shell [1591], hang |
                   |on rcs0                     |

--- Comment #4 from Chris Wilson <chris at chris-wilson.co.uk> ---
Allocation failure on swap-in is not uncommon when dealing with 5G+ of swap,
the kernel struggles to cope and we make more noise than most. That failure
does not look to be the cause of the later hang, though it may indeed be
related to memory pressure (although being snb it is llc so less susceptible to
most forms of corruption, you can still hypothesize data not making it to/from
swap that leads to context corruption). I would say the memory layout of the
batch supports the hypothesis that the context has been swapped out and back
in. So I am going to err on the side of assuming this is an invalid context
image due to swap.

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