Re: [BUGFIX] NULL pointer dereference in __vm_enough_memory()

From: WU Fengguang
Date: Sun Aug 12 2007 - 01:48:45 EST


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@xxxxxxxxxxxxxxxxxx> 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

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