linux-cifs.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Namjae Jeon <linkinjeon@kernel.org>
To: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>,
	Christian Brauner <christian.brauner@ubuntu.com>,
	Steve French <sfrench@samba.org>,
	Hyunchul Lee <hyc.lee@gmail.com>,
	linux-cifs@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] ksmbd: potential uninitialized error code in set_file_basic_info()
Date: Tue, 7 Sep 2021 17:09:08 +0900	[thread overview]
Message-ID: <CAKYAXd9rQU-u6q2ptqfGjFAND_VCRY4GqyF6th_b0u8Q__ckJQ@mail.gmail.com> (raw)
In-Reply-To: <YTccRzi/j+7t2eB9@google.com>

2021-09-07 17:01 GMT+09:00, Sergey Senozhatsky <senozhatsky@chromium.org>:
> On (21/09/07 10:33), Dan Carpenter wrote:
>>
>> Smatch complains that there are some paths where "rc" is not set.
>>
>> Fixes: eb5784f0c6ef ("ksmbd: ensure error is surfaced in
>> set_file_basic_info()")
>> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>> ---
>>  fs/ksmbd/smb2pdu.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c
>> index a350e1cef7f4..c86164dc70bb 100644
>> --- a/fs/ksmbd/smb2pdu.c
>> +++ b/fs/ksmbd/smb2pdu.c
>> @@ -5444,7 +5444,7 @@ static int set_file_basic_info(struct ksmbd_file
>> *fp, char *buf,
>>  	struct file *filp;
>>  	struct inode *inode;
>>  	struct user_namespace *user_ns;
>> -	int rc;
>> +	int rc = 0;
>>
>>  	if (!(fp->daccess & FILE_WRITE_ATTRIBUTES_LE))
>>  		return -EACCES;
>
> It sort of feels like that `rc' is not needed there at all. It's being used
> in
>
>                rc = ksmbd_vfs_set_dos_attrib_xattr(user_ns,
>                                                    filp->f_path.dentry,
> &da);
>                if (rc)
>                       ksmbd_debug(SMB,
>                                  "failed to restore file attribute in
> EA\n");
>
> and in
>
>                rc = setattr_prepare(user_ns, dentry, &attrs);
>                if (rc)
>                         return -EINVAL;
>
> Either it should be used more, and probably be a return value, or we can
> just remove it.
This patch is correct. But I have already fixed it.
You can understand it if you check #ksmbd-for-next branch, not master.

https://git.samba.org/?p=ksmbd.git;a=shortlog;h=refs/heads/ksmbd-for-next

Thanks!
>

  reply	other threads:[~2021-09-07  8:09 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-07  7:33 Dan Carpenter
2021-09-07  8:01 ` Sergey Senozhatsky
2021-09-07  8:09   ` Namjae Jeon [this message]
2021-09-07  8:38     ` Sergey Senozhatsky
2021-09-13  9:47     ` Christian Brauner
2021-09-07  8:48   ` Dan Carpenter
2021-09-07  9:04     ` Sergey Senozhatsky

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAKYAXd9rQU-u6q2ptqfGjFAND_VCRY4GqyF6th_b0u8Q__ckJQ@mail.gmail.com \
    --to=linkinjeon@kernel.org \
    --cc=christian.brauner@ubuntu.com \
    --cc=dan.carpenter@oracle.com \
    --cc=hyc.lee@gmail.com \
    --cc=kernel-janitors@vger.kernel.org \
    --cc=linux-cifs@vger.kernel.org \
    --cc=senozhatsky@chromium.org \
    --cc=sfrench@samba.org \
    --subject='Re: [PATCH] ksmbd: potential uninitialized error code in set_file_basic_info()' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).