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

[Dmitry Safonov]

2018-04-19 3:25 GMT+01:00 Andy Lutomirski <luto@xxxxxxxxxx>:
>> 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.

Yeah, it's right - CRIU doesn't work on native 32-bit and no support planned.

Thanks,
             Dmitry