linux-kernel - [tip: objtool/core] objtool: Warn about unknown annotation types

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Message-ID: <173313811810.412.12363821762248202483.tip-bot2@tip-bot2>
Date: Mon, 02 Dec 2024 11:15:18 -0000
From: "tip-bot2 for Peter Zijlstra" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: "Peter Zijlstra (Intel)" <peterz@...radead.org>,
 Josh Poimboeuf <jpoimboe@...nel.org>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: objtool/core] objtool: Warn about unknown annotation types

The following commit has been merged into the objtool/core branch of tip:

Commit-ID:     e7e0eb53c2f0f68fe2577472ce2802a4efd9d7ce
Gitweb:        https://git.kernel.org/tip/e7e0eb53c2f0f68fe2577472ce2802a4efd9d7ce
Author:        Peter Zijlstra <peterz@...radead.org>
AuthorDate:    Thu, 28 Nov 2024 10:39:07 +01:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Mon, 02 Dec 2024 12:01:45 +01:00

objtool: Warn about unknown annotation types

Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Acked-by: Josh Poimboeuf <jpoimboe@...nel.org>
Link: https://lore.kernel.org/r/20241128094312.611961175@infradead.org
---
 tools/objtool/check.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 26bdd3e..bfb407f 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -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;
 	}