[PATCH AUTOSEL 5.15 02/28] fs/ntfs3: Add ckeck in ni_update_parent()

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From: Konstantin Komarov <almaz.alexandrovich@xxxxxxxxxxxxxxxxxxxx>

[ Upstream commit 87d1888aa40f25773fa0b948bcb2545f97e2cb15 ]

Check simple case when parent inode equals current inode.

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 fs/ntfs3/frecord.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index 9a1744955d1cf..73a56d7ac84b7 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -3144,6 +3144,12 @@ static bool ni_update_parent(struct ntfs_inode *ni, struct NTFS_DUP_INFO *dup,
 		if (!fname || !memcmp(&fname->dup, dup, sizeof(fname->dup)))
 			continue;
 
+		/* Check simple case when parent inode equals current inode. */
+		if (ino_get(&fname->home) == ni->vfs_inode.i_ino) {
+			ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
+			continue;
+		}
+
 		/* ntfs_iget5 may sleep. */
 		dir = ntfs_iget5(sb, &fname->home, NULL);
 		if (IS_ERR(dir)) {
-- 
2.42.0




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