fs/ntfs3: Add ckeck in ni_update_parent()

[ Upstream commit 87d1888aa40f25773fa0b948bcb2545f97e2cb15 ]

Check simple case when parent inode equals current inode.

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index dda13e1..166c3c4 100644 (file)
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -3198,6 +3198,12 @@ 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)) {