linux-kernel - [PATCH] smb: propagate error code of extract

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Date:   Tue, 15 Aug 2023 16:38:31 +0300
From:   Katya Orlova <e.orlova@...ras.ru>
To:     David Howells <dhowells@...hat.com>
Cc:     Katya Orlova <e.orlova@...ras.ru>,
        Jeff Layton <jlayton@...nel.org>,
        Steve French <sfrench@...ba.org>,
        Paulo Alcantara <pc@...guebit.com>,
        Ronnie Sahlberg <lsahlber@...hat.com>,
        linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org,
        linux-kernel@...r.kernel.org, lvc-project@...uxtesting.org
Subject: [PATCH] smb: propagate error code of extract_sharename()

In addition to the EINVAL, there may be an ENOMEM.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 70431bfd825d ("cifs: Support fscache indexing rewrite")
Signed-off-by: Katya Orlova <e.orlova@...ras.ru>
---
 fs/smb/client/fscache.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/smb/client/fscache.c b/fs/smb/client/fscache.c
index 8f6909d633da..34e20c4cd507 100644
--- a/fs/smb/client/fscache.c
+++ b/fs/smb/client/fscache.c
@@ -48,7 +48,7 @@ int cifs_fscache_get_super_cookie(struct cifs_tcon *tcon)
 	sharename = extract_sharename(tcon->tree_name);
 	if (IS_ERR(sharename)) {
 		cifs_dbg(FYI, "%s: couldn't extract sharename\n", __func__);
-		return -EINVAL;
+		return PTR_ERR(sharename);
 	}
 
 	slen = strlen(sharename);
-- 
2.30.2