linux-kernel - [PATCH AUTOSEL 6.6 065/294] objtool: Fix error handling inconsistencies in check()

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Message-Id: <20250505225634.2688578-65-sashal@kernel.org>
Date: Mon,  5 May 2025 18:52:45 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Josh Poimboeuf <jpoimboe@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Brendan Jackman <jackmanb@...gle.com>,
	Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 6.6 065/294] objtool: Fix error handling inconsistencies in check()

From: Josh Poimboeuf <jpoimboe@...nel.org>

[ Upstream commit b745962cb97569aad026806bb0740663cf813147 ]

Make sure all fatal errors are funneled through the 'out' label with a
negative ret.

Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Brendan Jackman <jackmanb@...gle.com>
Link: https://lore.kernel.org/r/0f49d6a27a080b4012e84e6df1e23097f44cc082.1741975349.git.jpoimboe@kernel.org
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 tools/objtool/check.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index f5af48502c9c8..f8e676a6e6f8e 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -4692,8 +4692,10 @@ int check(struct objtool_file *file)
 	init_cfi_state(&force_undefined_cfi);
 	force_undefined_cfi.force_undefined = true;
 
-	if (!cfi_hash_alloc(1UL << (file->elf->symbol_bits - 3)))
+	if (!cfi_hash_alloc(1UL << (file->elf->symbol_bits - 3))) {
+		ret = -1;
 		goto out;
+	}
 
 	cfi_hash_add(&init_cfi);
 	cfi_hash_add(&func_cfi);
@@ -4710,7 +4712,7 @@ int check(struct objtool_file *file)
 	if (opts.retpoline) {
 		ret = validate_retpoline(file);
 		if (ret < 0)
-			return ret;
+			goto out;
 		warnings += ret;
 	}
 
@@ -4746,7 +4748,7 @@ int check(struct objtool_file *file)
 		 */
 		ret = validate_unrets(file);
 		if (ret < 0)
-			return ret;
+			goto out;
 		warnings += ret;
 	}
 
@@ -4809,7 +4811,7 @@ int check(struct objtool_file *file)
 	if (opts.prefix) {
 		ret = add_prefix_symbols(file);
 		if (ret < 0)
-			return ret;
+			goto out;
 		warnings += ret;
 	}
 
-- 
2.39.5