Re: [PATCH] userfaultfd: avoid the duplicated release for userfaultfd_ctx

["Xu, Yanfei" <yanfei.xu@xxxxxxxxxxxxx>]

On 7/20/20 12:57 AM, Al Viro wrote:
> On Sun, Jul 19, 2020 at 09:58:34PM +0800, Xu, Yanfei wrote:
> > ping Al Viro
> >
> > Could you please help to review this patch? Thanks a lot.
>
> That's -next, right?  As for the patch itself...  Frankly,
Yes, it's -next.
> Daniel's patch looks seriously wrong.
Get it.

Regards,
Yanfei
> 	* why has O_CLOEXEC been quietly smuggled in?  It's
> a userland ABI change, for fsck sake...
> 	* the double-put you've spotted
> 	* the whole out: thing - just make it
> 	if (IS_ERR(file)) {
> 		userfaultfd_ctx_put(ctx);
> 		return PTR_ERR(file);
> 	}
> 	and be done with that.