lkml.org 
[lkml]   [2021]   [Jul]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] ipmi: ssif_bmc: Return -EFAULT if copy_from_user() fails
On Fri, Jul 23, 2021 at 11:44:59AM +0300, Dan Carpenter wrote:
> The copy_from_user() function returns the number of bytes remaining to
> be copied but we should return -EFAULT here.

Yep, this is in my queue.

Thanks,

-corey

>
> Fixes: 007888f365c9 ("ipmi: ssif_bmc: Add SSIF BMC driver")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> ---
> drivers/char/ipmi/ssif_bmc.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/char/ipmi/ssif_bmc.c b/drivers/char/ipmi/ssif_bmc.c
> index b15c05622e72..ce8cd8364a3f 100644
> --- a/drivers/char/ipmi/ssif_bmc.c
> +++ b/drivers/char/ipmi/ssif_bmc.c
> @@ -85,9 +85,8 @@ static ssize_t ssif_bmc_write(struct file *file, const char __user *buf, size_t
> if (count > sizeof(struct ssif_msg))
> return -EINVAL;
>
> - ret = copy_from_user(&msg, buf, count);
> - if (ret)
> - return ret;
> + if (copy_from_user(&msg, buf, count))
> + return -EFAULT;
>
> if (!msg.len || count < ssif_msg_len(&msg))
> return -EINVAL;
> --
> 2.20.1
>

\
 
 \ /
  Last update: 2021-07-23 14:25    [W:0.058 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site