linux-kernel - Re: [PATCH] cifs: Fix inconsistent IS_ERR and PTR

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Date:   Fri, 19 Feb 2021 17:48:01 +0100
From:   Samuel Cabrero <scabrero@...e.de>
To:     YueHaibing <yuehaibing@...wei.com>, sfrench@...ba.org,
        dan.carpenter@...cle.com, aaptel@...e.com
Cc:     linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cifs: Fix inconsistent IS_ERR and PTR_ERR

Thanks Yue, it looks good to me.

Reviewed-by: Samuel Cabrero <scabrero@...e.de>

On Thu, 2021-02-18 at 17:28 +0800, YueHaibing wrote:
> Fix inconsistent IS_ERR and PTR_ERR in cifs_find_swn_reg(). The
> proper
> pointer to be passed as argument to PTR_ERR() is share_name.
> 
> This bug was detected with the help of Coccinelle.
> 
> Fixes: bf80e5d4259a ("cifs: Send witness register and unregister
> commands to userspace daemon")
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
> ---
>  fs/cifs/cifs_swn.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/cifs/cifs_swn.c b/fs/cifs/cifs_swn.c
> index d35f599aa00e..f2d730fffccb 100644
> --- a/fs/cifs/cifs_swn.c
> +++ b/fs/cifs/cifs_swn.c
> @@ -272,7 +272,7 @@ static struct cifs_swn_reg
> *cifs_find_swn_reg(struct cifs_tcon *tcon)
>         if (IS_ERR(share_name)) {
>                 int ret;
>  
> -               ret = PTR_ERR(net_name);
> +               ret = PTR_ERR(share_name);
>                 cifs_dbg(VFS, "%s: failed to extract share name from
> target '%s': %d\n",
>                                 __func__, tcon->treeName, ret);
>                 kfree(net_name);