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2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/net/sched/sch_hfsc.c
.. .. @@ -1012,6 +1012,10 @@
1012 1012  		if (parent == NULL)
1013 1013  			return -ENOENT;
1014 1014  	}
1015 +	if (!(parent->cl_flags & HFSC_FSC) && parent != &q->root) {
1016 +		NL_SET_ERR_MSG(extack, "Invalid parent - parent class must have FSC");
1017 +		return -EINVAL;
1018 +	}
1015 1019  
1016 1020  	if (classid == 0 || TC_H_MAJ(classid ^ sch->handle) != 0)
1017 1021  		return -EINVAL;

..	..	@@ -1012,6 +1012,10 @@
1012	1012	if (parent == NULL)
1013	1013	return -ENOENT;
1014	1014	}
	1015	+ if (!(parent->cl_flags & HFSC_FSC) && parent != &q->root) {
	1016	+ NL_SET_ERR_MSG(extack, "Invalid parent - parent class must have FSC");
	1017	+ return -EINVAL;
	1018	+ }
1015	1019
1016	1020	if (classid == 0 \|\| TC_H_MAJ(classid ^ sch->handle) != 0)
1017	1021	return -EINVAL;