Re: [PATCH RESEND] rsxx: Return -EFAULT if copy_to_user() fails

Jens Axboe
2021-03-03T18:11:04Z

On 3/3/21 3:59 AM, Dan Carpenter wrote:
> The copy_to_user() function returns the number of bytes remaining but
> we want to return -EFAULT to the user if it can't complete the copy.
> The "st" variable only holds zero on success or negative error codes on
> failure so the type should be int.
>
> Fixes: 36f988e978f8 ("rsxx: Adding in debugfs entries.")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> ---
> I sent this last June as part of a 2 patch series. No one responded
> to the patches. The first patch was a NULL derefence fix but I now
> think that the correct fix for that is to remove the "enable_blkdev"
> module option... Anyway, this patch is uncontroversial so I'm going to
> resend it.

Thanks Dan, applied.

--
Jens Axboe