Re: [PATCH -next V2] sysctl: returns -EINVAL when a negative value is passed to proc_doulongvec_minmax

[libaokun (A)]

在 2021/12/21 3:17, Luis Chamberlain 写道:
> On Mon, Dec 20, 2021 at 05:26:27PM +0800, Baokun Li wrote:
> > When we pass a negative value to the proc_doulongvec_minmax() function,
> > the function returns 0, but the corresponding interface value does not
> > change.
> >
> > we can easily reproduce this problem with the following commands:
> >      `cd /proc/sys/fs/epoll`
> >      `echo -1 > max_user_watches; echo $?; cat max_user_watches`
> >
> > This function requires a non-negative number to be passed in, so when
> > a negative number is passed in, -EINVAL is returned.
> >
> > Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
> > Signed-off-by: Baokun Li <libaokun1@xxxxxxxxxx>
> Acked-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
>
>   Luis
> .

Thank you for your Ack.

--
With Best Regards,
Baokun Li