Re: [PATCH v1] Revert "mm: kmemleak: alloc gray object for reserved region with direct map"

From: Rob Herring
Date: Fri Jan 27 2023 - 16:40:20 EST


On Fri, Jan 27, 2023 at 3:38 PM Rob Herring <robh@xxxxxxxxxx> wrote:
>
>
> On Tue, 24 Jan 2023 15:02:54 -0800, Isaac J. Manjarres wrote:
> > This reverts commit 972fa3a7c17c9d60212e32ecc0205dc585b1e769.
> >
> > Kmemleak operates by periodically scanning memory regions for pointers
> > to allocated memory blocks to determine if they are leaked or not.
> > However, reserved memory regions can be used for DMA transactions
> > between a device and a CPU, and thus, wouldn't contain pointers to
> > allocated memory blocks, making them inappropriate for kmemleak to
> > scan. Thus, revert this commit.
> >
> > Cc: stable@xxxxxxxxxxxxxxx # 5.17+
> > Cc: Calvin Zhang <calvinzhang.cool@xxxxxxxxx>
> > Signed-off-by: Isaac J. Manjarres <isaacmanjarres@xxxxxxxxxx>
> > ---
> > drivers/of/fdt.c | 6 +-----
> > 1 file changed, 1 insertion(+), 5 deletions(-)
> >
>
> Applied, thanks!

Or not. Andrew already applied it.

Rob