diff --git a/pkg/sentry/fsimpl/gofer/dentry_impl.go b/pkg/sentry/fsimpl/gofer/dentry_impl.go
index 0f264245c..a1a62fe1f 100644
--- a/pkg/sentry/fsimpl/gofer/dentry_impl.go
+++ b/pkg/sentry/fsimpl/gofer/dentry_impl.go
@@ -352,6 +352,7 @@ func (d *dentry) mknod(ctx context.Context, name string, creds *auth.Credentials
 
 // Preconditions:
 //   - !d.isSynthetic().
+//   - !target.isSynthetic().
 //   - d.fs.renameMu must be locked.
 func (d *dentry) link(ctx context.Context, target *dentry, name string) (*dentry, error) {
 	switch dt := d.impl.(type) {
diff --git a/pkg/sentry/fsimpl/gofer/directfs_dentry.go b/pkg/sentry/fsimpl/gofer/directfs_dentry.go
index 165ea1cc5..6d01ccbb1 100644
--- a/pkg/sentry/fsimpl/gofer/directfs_dentry.go
+++ b/pkg/sentry/fsimpl/gofer/directfs_dentry.go
@@ -538,6 +538,8 @@ func (d *directfsDentry) link(target *directfsDentry, name string) (*dentry, err
 	}
 	// Note that we don't need to set uid/gid for the new child. This is a hard
 	// link. The original file already has the right owner.
+	// TODO(gvisor.dev/issue/6739): Hard linked dentries should share the same
+	// inode fields.
 	return d.getCreatedChild(name, -1 /* uid */, -1 /* gid */, false /* isDir */)
 }
 
diff --git a/pkg/sentry/fsimpl/gofer/filesystem.go b/pkg/sentry/fsimpl/gofer/filesystem.go
index 8b4d0f94c..a625a9639 100644
--- a/pkg/sentry/fsimpl/gofer/filesystem.go
+++ b/pkg/sentry/fsimpl/gofer/filesystem.go
@@ -809,6 +809,10 @@ func (fs *filesystem) LinkAt(ctx context.Context, rp *vfs.ResolvingPath, vd vfs.
 		if d.nlink.Load() == math.MaxUint32 {
 			return nil, linuxerr.EMLINK
 		}
+		if d.isSynthetic() {
+			// TODO(gvisor.dev/issue/6739): Add synthetic file hard link support.
+			return nil, linuxerr.EOPNOTSUPP
+		}
 		return parent.link(ctx, d, name)
 	}, nil)
 
diff --git a/pkg/sentry/fsimpl/gofer/lisafs_dentry.go b/pkg/sentry/fsimpl/gofer/lisafs_dentry.go
index cc7f63a6e..245002e0e 100644
--- a/pkg/sentry/fsimpl/gofer/lisafs_dentry.go
+++ b/pkg/sentry/fsimpl/gofer/lisafs_dentry.go
@@ -425,6 +425,8 @@ func (d *lisafsDentry) link(ctx context.Context, target *lisafsDentry, name stri
 	if err != nil {
 		return nil, err
 	}
+	// TODO(gvisor.dev/issue/6739): Hard linked dentries should share the same
+	// inode fields.
 	return d.newChildDentry(ctx, &linkInode, name)
 }