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    SubjectRe: inode->i_wb_list corruption.
    On Fri, Mar 09, 2012 at 09:57:14AM -0500, Dave Jones wrote:
    > On Fri, Mar 09, 2012 at 04:34:57PM +0800, Yang Bai wrote:
    >
    > > I still want to know how to reproduce this bug. I add the following
    > > patch to the kernel fc-16 3.2.9-1
    > >
    > > So on every inode_wb_list_del, it will show the whole list.
    > >
    > > and Doing while true; do touch a && rm -f a; done for almost one day
    > > without any problem.
    > >
    > > So How to reproduce it??
    >
    > If it was that easy, I'd be bisecting it by now ;-)
    >
    > This, like a bunch of other really weird bugs that we have no explanation for,
    > only seems to be being hit by a small minority of users.
    >
    > One common thing seems to be that they were all quad core intel
    > boxes, with i915 graphics.
    >
    > We have some reports of i915 causing memory corruption after suspend/hibernate,
    > but none of these reports mention whether they've done that (I just asked).

    And with that, this arrived..
    https://bugzilla.redhat.com/show_bug.cgi?id=788433#c3

    I'm leaning strongly towards believing this is yet another case of i915
    corrupting memory on resume.

    Dave



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