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    SubjectRe: Boot failure on Arndale with next-20131105
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    On Tue, Nov 5, 2013 at 2:06 PM, Stephen Warren <swarren@wwwdotorg.org> wrote:
    > On 11/05/2013 01:56 PM, Chris Mason wrote:
    >> Quoting Olof Johansson (2013-11-05 15:38:33)
    >>> On Tue, Nov 5, 2013 at 12:33 PM, Chris Mason <chris.mason@fusionio.com> wrote:
    >>>> Quoting Olof Johansson (2013-11-05 15:23:51)
    >>>>> On Tue, Nov 5, 2013 at 11:33 AM, Jens Axboe <axboe@kernel.dk> wrote:
    >>>>
    >>>> [ horrible crashes fixed by removing my patch ]
    >>>>
    > ...
    >> Ok, I think I see it. My guess is that you're hitting bounce buffers.
    >> __blk_queue_bounce is the only caller of the bio splitting code I can
    >> see that you might be hitting.
    >>
    >> My first patch exposed a lurking bug in bio_clone_biovec. Basically
    >> bio->bi_vcnt is being doubled instead of initialized.
    >>
    >> This patch is only compile tested, but I think it'll fix it.
    >
    > Tested-by: Stephen Warren <swarren@nvidia.com>
    > (this fixes the issue on Tegra30/Beaver at least)

    Tested-by: Olof Johansson <olof@lixom.net>

    This resolves boot failures on:
    * Tegra30/beaver
    * OMAP4/panda
    * i.MX6/wandboard

    Thanks Chris!

    -Olof


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