Re: [Bug 43227] New: BUG: Bad page state in process wcg_gfam_6.11_i

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On Fri, May 11, 2012 at 02:30:42PM -0700, Hugh Dickins wrote:
 > > when the page was freed, not when it was reused!  Can anyone think of a
 > > reason why PAGE_FLAGS_CHECK_AT_FREE doesn't include these flags (at
 > > least)?
 > Because those flags may validly be set when a page is freed (I do have an
 > old patch to change anon dirty handling to stop that, but it's not really
 > needed).

It would be nice to be able to distinguish from things like random memory
scribbles setting those flags.

 > The only thought I have on this report: what binutils was used to build
 > this kernel?  We had "Bad page" and isolate_lru_pages BUG reports at the
 > start of the month, and they were traced to buggy binutils

The fedora reports we have are from binutils prior to that ( is
the newest we have in F16 for eg).


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