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SubjectRe: [BUGFIX] NULL pointer dereference in __vm_enough_memory()
On Sun, Aug 12, 2007 at 01:48:31PM +0800, WU Fengguang wrote:
> On Sat, Aug 11, 2007 at 11:31:09PM +0530, Balbir Singh wrote:
> > Andrew Morton wrote:
> > > On Sat, 11 Aug 2007 20:00:12 +0530 "Balbir Singh" <balbir@linux.vnet.ibm.com> wrote:
> > >>>
> > >> Shouldn't we just not stop vm accounting for kernel threads?
> > >>
> > >
> > > Could be. It'd help heaps if we knew which patch in -mm caused
> > > this, but from a quick peek it seems to me that mainline should be
> > > vulnerable as well.
> >
> > Thats a valid point. It would be interesting to see what the overcommit
> > setting was, when the panic occurred.
>
> FYI, I do have nondefault overcommit settings:
>
> vm.overcommit_memory = 2
> vm.lowmem_reserve_ratio = 1 1

Yes, the bug disappears when changing to default overcommit_memory!

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