Re: [Bug #11805] mounting XFS produces a segfault

Dave Chinner
2008-10-26T00:08:04Z

On Sat, Oct 25, 2008 at 10:06:44PM +0200, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.27. Please verify if it still should be listed and let me know
> (either way).
>
>
> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11805
> Subject : mounting XFS produces a segfault
> Submitter : Tiago Maluta <maluta_tiago-/E1597aS9LRfJ/NunPodnw@public.gmane.org>
> Date : 2008-10-21 18:00 (5 days old)

Ah - this was reported as a 2.6.26 -> 2.6.27 regression, not a
.27->.28-rcX regression.

Even so, it's not obviously an XFS regression as the problem is
that alloc_pages(GFP_KERNEL) is the new failure on .27. The fact
that XFS never handled the allocation failure is not a new bug
or regression - it has never caught failures during log
allocation...

So really, if you want to look for a regression here, it is the
change of behaviour in the VM leading to a memory allocation failure
where it has never, ever previously failed...

Cheers,

Dave.
--
Dave Chinner
david-FqsqvQoI3Ljby3iVrkZq2A@public.gmane.org