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-rw-r--r--fs/dcache.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/dcache.c b/fs/dcache.c
index 85a2aad3dcb3..ad137005cda7 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2706,6 +2706,11 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry)
dput(new);
return ERR_PTR(-EIO);
}
+ if (d_ancestor(new, dentry)) {
+ spin_unlock(&inode->i_lock);
+ dput(new);
+ return ERR_PTR(-EIO);
+ }
write_seqlock(&rename_lock);
__d_materialise_dentry(dentry, new);
write_sequnlock(&rename_lock);