On Tue, May 31, 2016 at 11:28:05AM +0200, Geert Uytterhoeven wrote: > Hi Mel, > > On Mon, May 30, 2016 at 8:56 PM, Mel Gorman <mgor...@techsingularity.net> > wrote: > > Thanks. Please try the following instead > > > > diff --git a/mm/page_alloc.c b/mm/page_alloc.c > > index bb320cde4d6d..557549c81083 100644 > > --- a/mm/page_alloc.c > > +++ b/mm/page_alloc.c > > @@ -3024,6 +3024,7 @@ get_page_from_freelist(gfp_t gfp_mask, unsigned int > > order, int alloc_flags, > > apply_fair = false; > > fair_skipped = false; > > reset_alloc_batches(ac->preferred_zoneref->zone); > > + z = ac->preferred_zoneref; > > goto zonelist_scan; > > } > > Thanks a lot, that seems to fix the issue!. > > Tested-by: Geert Uytterhoeven <ge...@linux-m68k.org> > > JFTR, without the fix, sometimes I get a different, but equally obscure, crash > than the one I posted before: >
I'm afraid I don't recognise it. Given the nature of the previous bug though, I have a vague suspicion that someone is not handling a page allocation failure properly and goes boom later. -- Mel Gorman SUSE Labs
