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

Rafael J. Wysocki
2008-10-26T11:14:27Z

On Sunday, 26 of October 2008, Dave Chinner wrote:
> 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...

OK, I moved it to the list of regressions introduced between .26 and .27.

Thanks,
Rafael