Re: [PATCH v2] prctl: fix compat handling for prctl

[Andy Lutomirski]

> On Apr 18, 2018, at 9:06 PM, Li Bin <huawei.libin@xxxxxxxxxx> wrote:
>
> The member auxv in prctl_mm_map structure which be shared with
> userspace is pointer type, but the kernel supporting COMPAT didn't
> handle it. This patch fix the compat handling for prctl syscall.

I would propose an alternative fix: change the type to u64. As far as
I know, this thing is only used by CRIU, and CRIU doesnât work (AFAIK)
on native 32-bit anyway.   Do you know of some reason that this
wouldn't work?