[PATCH 4.4 009/183] exportfs: fix passing zero to ERR_PTR() warning

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From: YueHaibing <yuehaibing@xxxxxxxxxx>

[ Upstream commit 909e22e05353a783c526829427e9a8de122fba9c ]

Fix a static code checker warning:
  fs/exportfs/expfs.c:171 reconnect_one() warn: passing zero to 'ERR_PTR'

The error path for lookup_one_len_unlocked failure
should set err to PTR_ERR.

Fixes: bbf7a8a3562f ("exportfs: move most of reconnect_path to helper function")
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 fs/exportfs/expfs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c
index 6599c6124552f..01cbdd0987c07 100644
--- a/fs/exportfs/expfs.c
+++ b/fs/exportfs/expfs.c
@@ -148,6 +148,7 @@ static struct dentry *reconnect_one(struct vfsmount *mnt,
 	mutex_unlock(&parent->d_inode->i_mutex);
 	if (IS_ERR(tmp)) {
 		dprintk("%s: lookup failed: %d\n", __func__, PTR_ERR(tmp));
+		err = PTR_ERR(tmp);
 		goto out_err;
 	}
 	if (tmp != dentry) {
-- 
2.20.1






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