Commit e7e0eb53 authored by Peter Zijlstra's avatar Peter Zijlstra
Browse files

objtool: Warn about unknown annotation types 



Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: default avatarJosh Poimboeuf <jpoimboe@kernel.org>
Link: https://lore.kernel.org/r/20241128094312.611961175@infradead.org
parent 87116ae6

tools/objtool/check.c

+13 −0
Original line number Diff line number Diff line
@@ -2335,6 +2335,10 @@ static int __annotate_ifc(struct objtool_file *file, int type, struct instructio 
static int __annotate_late(struct objtool_file *file, int type, struct instruction *insn)

{

	switch (type) {

	case ANNOTYPE_NOENDBR:

		/* early */

		break;



	case ANNOTYPE_RETPOLINE_SAFE:

		if (insn->type != INSN_JUMP_DYNAMIC &&

		    insn->type != INSN_CALL_DYNAMIC &&
@@ -2359,11 +2363,20 @@ static int __annotate_late(struct objtool_file *file, int type, struct instructi 
		insn->unret = 1;

		break;



	case ANNOTYPE_IGNORE_ALTS:

		/* early */

		break;



	case ANNOTYPE_INTRA_FUNCTION_CALL:

		/* ifc */

		break;



	case ANNOTYPE_REACHABLE:

		insn->dead_end = false;

		break;



	default:

		WARN_INSN(insn, "Unknown annotation type: %d", type);

		break;

	}