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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, kernel test robot <lkp@intel.com>,
        "Paulo Alcantara (SUSE)" <pc@cjr.nz>,
        Steve French <stfrench@microsoft.com>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.13 172/175] smb3: rc uninitialized in one fallocate path
Date:   Tue, 10 Aug 2021 19:31:20 +0200
Message-Id: <20210810173006.612305968@linuxfoundation.org>
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From: Steve French <stfrench@microsoft.com>

[ Upstream commit 5ad4df56cd2158965f73416d41fce37906724822 ]

Clang detected a problem with rc possibly being unitialized
(when length is zero) in a recently added fallocate code path.

Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/cifs/smb2ops.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 398c941e3897..f77156187a0a 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -3613,7 +3613,8 @@ static int smb3_simple_fallocate_write_range(unsigned int xid,
 					     char *buf)
 {
 	struct cifs_io_parms io_parms = {0};
-	int rc, nbytes;
+	int nbytes;
+	int rc = 0;
 	struct kvec iov[2];
 
 	io_parms.netfid = cfile->fid.netfid;
-- 
2.30.2