linux-kernel - [PATCH] xfs: Fix missing error code in xfs_reflink_end_cow

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Message-Id: <20220317013930.124432-1-jiapeng.chong@linux.alibaba.com>
Date:   Thu, 17 Mar 2022 09:39:30 +0800
From:   Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
To:     djwong@...nel.org
Cc:     linux-xfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>,
        Abaci Robot <abaci@...ux.alibaba.com>
Subject: [PATCH] xfs: Fix missing error code in xfs_reflink_end_cow_extent()

The error code is missing in this code scenario, add the error code
'-EINVAL' to the return value 'error'.

Eliminate the follow smatch warning:

fs/xfs/xfs_reflink.c:634 xfs_reflink_end_cow_extent() warn: missing
error code 'error'.

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
---
 fs/xfs/xfs_reflink.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c
index 54e68e5693fd..7265f8850f65 100644
--- a/fs/xfs/xfs_reflink.c
+++ b/fs/xfs/xfs_reflink.c
@@ -631,6 +631,7 @@ xfs_reflink_end_cow_extent(
 	if (!xfs_iext_lookup_extent_before(ip, ifp, end_fsb, &icur, &got) ||
 	    got.br_startoff + got.br_blockcount <= offset_fsb) {
 		*end_fsb = offset_fsb;
+		error = -EINVAL;
 		goto out_cancel;
 	}
 
-- 
2.20.1.7.g153144c