From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D016E2DD68C; Mon, 14 Apr 2025 13:32:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744637533; cv=none; b=fGdTp5ntIX0tXMmrPt85XButqq6PpN/vvq1DJLCCzEDKCv5e/HFkRGhIBd6bOgsyhJa67u3VlmkX6PWFcKFSOjt0E/oePnsM/tjjmLSLztulhfYWDtu7LThzSgcPnVlu1m/hbUIu0eR+yCGisZzWAV9lvMrZ/VQ7UzYVTqAauqc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744637533; c=relaxed/simple; bh=9Boqaxc0T/ILY7xhjPJ9ikI6D0WZR6oGzxw8kESorEw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Ez8wQ+AYrTL07mDoNZom3+8VQUgSz0dOMwd0dmWNXCl7AwPpHkLOO8bQjg+sHR/sRWJ7Jwc/o1we6t1oPOqnNnRW8qzgL8IbJNO5UV7qGcBsIpKFjSgrOGC1samjqkza8M2xSn4+3UZtie0nOgfIz2REtUJsTCYfN49S2q/gKlU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=o0gsrXps; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="o0gsrXps" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 510C3C4CEEB; Mon, 14 Apr 2025 13:32:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744637533; bh=9Boqaxc0T/ILY7xhjPJ9ikI6D0WZR6oGzxw8kESorEw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o0gsrXps5DaV0+ow8pYQtjnESb/mbwAo8VGucbsFxJxr9jyUHa2a0Y2eBLNho65eG OoL9T+MSm25y/VgAVDd+CVX8sTc3HH1tecRxbN2ElBgUVh4AE7/rGL1UztU0Ll+VeN ME/xmGZk0li/bs0vl54hP+yJDVR4oR2EqNbzWBQmEfmtpwgzuAL0WVD9hxAvskNfWW 9JXI69R1qzsteygLkGRC5yqSqXSrUHrvsf0TikrkJDVXZLyiGHAKZ8+kuPUa11HLAO 2ktzyV+E7w5cGis2GqzE68dyrFh4pL+YMrV620BULtgrEu75uHyA39zt8C0O3q5wuo mOHhmO6db0f4Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Josh Poimboeuf , Ingo Molnar , Linus Torvalds , Sasha Levin , peterz@infradead.org Subject: [PATCH AUTOSEL 5.10 07/11] objtool: Stop UNRET validation on UD2 Date: Mon, 14 Apr 2025 09:31:54 -0400 Message-Id: <20250414133158.681045-7-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250414133158.681045-1-sashal@kernel.org> References: <20250414133158.681045-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.10.236 Content-Transfer-Encoding: 8bit From: Josh Poimboeuf [ Upstream commit 9f9cc012c2cbac4833746a0182e06a8eec940d19 ] In preparation for simplifying INSN_SYSCALL, make validate_unret() terminate control flow on UD2 just like validate_branch() already does. Signed-off-by: Josh Poimboeuf Signed-off-by: Ingo Molnar Cc: Linus Torvalds Link: https://lore.kernel.org/r/ce841269e7e28c8b7f32064464a9821034d724ff.1744095216.git.jpoimboe@kernel.org Signed-off-by: Sasha Levin --- tools/objtool/check.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index bcc9948645a00..20ccdd60353be 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -3249,6 +3249,9 @@ static int validate_entry(struct objtool_file *file, struct instruction *insn) break; } + if (insn->dead_end) + return 0; + if (!next) { WARN_FUNC("teh end!", insn->sec, insn->offset); return -1; -- 2.39.5