[PATCH 1/8] fs/ntfs3: Add ckeck in ni_update_parent()

[Konstantin Komarov <almaz.alexandrovich@xxxxxxxxxxxxxxxxxxxx>]

Check simple case when parent inode equals current inode.

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

diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index 16bd9faa2d28..8f34d6472ddb 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -3208,6 +3208,12 @@ 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)) {
--
2.34.1