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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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