Re: [PATCH v2 08/35] nds32: Process management

[Al Viro]

On Mon, Nov 27, 2017 at 08:27:55PM +0800, Greentime Hu wrote:

> +#define start_thread(regs,pc,stack)			\
> +({							\
> +	set_fs(USER_DS);				\

Not the job of start_thread() - its users (->load_binary() methods of
assorted binfmt) must (and do) call flush_old_exec() first.  And
that will switch to USER_DS just fine.