On Wed, Jun 30, 2021 at 10:33:29AM +0800, Qiang Liu wrote:

Hi,

On Wed, Jun 30, 2021 at 4:33 AM Hugh Dickins [off-list ref] wrote:

quoted

On Tue, 29 Jun 2021, Greg Kroah-Hartman wrote:

quoted

Commit 1be7107fbe18 ("mm: larger stack guard gap, between vmas") fixed
up almost all architectures to deal with the stack guard gap, but forgit
nds32.

Resolve this by properly fixing up the nsd32's version of
arch_get_unmapped_area()

Reported-by: iLifetruth <redacted>
Cc: Nick Hu <redacted>
Cc: Greentime Hu <redacted>
Cc: Vincent Chen <redacted>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Qiang Liu <redacted>
Cc: stable <redacted>
Fixes: 1be7107fbe18 ("mm: larger stack guard gap, between vmas")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Acked-by: Hugh Dickins <hughd@google.com>

but it's a bit unfair to say that commit forgot nds32:
nds32 came into the tree nearly a year later.

Could we use "not forward ported to"?

Nah, it was just a mistake in the nds32 implementation when it was
submitted.

thanks,

greg k-h