From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sender4-op-o12.zoho.com (sender4-op-o12.zoho.com [136.143.188.12]) (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 42E62472F97; Thu, 23 Jul 2026 13:31:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.12 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784813465; cv=pass; b=ub0aN/mIHcmBhWBVlyjEuXgxSTQ/3Tc7btYNWLpyztmtbPyFOQ1J3QJAajZ6tF3fwwZKitBeso1tLC+SZSAxa3xJMPZf2DpVcLRivOFF56n+j/aAuzPM4nZkbmGVUksroPPKMfVyjk1zFwUfBBK3s8y9r17rXdIJmrkvEBKDlAo= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784813465; c=relaxed/simple; bh=voacHPQhxeD9BsoKj33Td7XAOKOjPDYWP6T6h9X/ss4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=brACM1PzPKdGZkFTkE3G1Pl0j66smg/G9Y4rYPgAYIvo9f10AOCkXgczlYKJoGmbKU36L39LdkvQ80NqJZXcnLVlO1kTbBUPHXX1VjPJbm3403JJIXSa1FbUXeQqzlxRP/+Vtj4cgQUCLkn7crn1bm1GMa11o38hLkOL7oKNHJ0= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=yoavmoshe.com; spf=pass smtp.mailfrom=yoavmoshe.com; dkim=pass (1024-bit key) header.d=yoavmoshe.com header.i=linux@yoavmoshe.com header.b=ba+dGBlZ; arc=pass smtp.client-ip=136.143.188.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=yoavmoshe.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=yoavmoshe.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=yoavmoshe.com header.i=linux@yoavmoshe.com header.b="ba+dGBlZ" ARC-Seal: i=1; a=rsa-sha256; t=1784813432; cv=none; d=zohomail.com; s=zohoarc; b=Mi7SvsuzYyJOU8mKnjdBo4xRHVdBPy6ZzGrmqFssDLxEFbbAkquLkDP4zNwSOKv7G4R99ptwpNGC9Q0th1Zu4ReAXLtFM4qb02JiyXRoQKAop0CA/59+bjINb578n4lVDa9IVWUdEaRM3RaFCqkqCLWYZ72b7AXKbQvowgbzF0M= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1784813432; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:Subject:Subject:To:To:Message-Id:Reply-To; bh=voacHPQhxeD9BsoKj33Td7XAOKOjPDYWP6T6h9X/ss4=; b=iHYNBINAollBqVdY4JEJjoF8J/0WXzxwFgzcSpqUbJMI1EHR6aA3R4r4Zw3hu0qnwVZCW7H9hRtBwaPynxmofeNeLDv0X4NS0HtAzjfYEflxmdhjS8KWF+Amj7IFnQuHVqsw/tqHvcQwn8Y9q7LLwJBGt0MPsBhG7AILGK6Slx0= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=yoavmoshe.com; spf=pass smtp.mailfrom=linux@yoavmoshe.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1784813432; s=zoho; d=yoavmoshe.com; i=linux@yoavmoshe.com; h=Message-ID:Date:Date:MIME-Version:Subject:Subject:To:To:Cc:Cc:From:From:In-Reply-To:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=voacHPQhxeD9BsoKj33Td7XAOKOjPDYWP6T6h9X/ss4=; b=ba+dGBlZtfDEbbXV7LEsIUS04v5rVq4XPn+zNMu6Ua9e9QYqwz3Z5mdKpqNMA9bH 3D9B4bFb+gA/WPbIagPLHe6732cFeG8xQjAGMBC3rOmD8P8gAWU0FLXDMDPlJmw7kRQ JUXUJW2pAUAee9sZH3Cz6vUPKgzxJH5XEX7F7+Dk= Received: by mx.zohomail.com with SMTPS id 1784813428050186.1014094452098; Thu, 23 Jul 2026 06:30:28 -0700 (PDT) Message-ID: <415ffa24-a30b-43b2-aa6a-a1cde3bd4ef0@yoavmoshe.com> Date: Thu, 23 Jul 2026 15:30:07 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3] ARM: imx: Fix suspend/resume crash with Clang CFI To: Sami Tolvanen , Yo'av Moshe Cc: Nathan Chancellor , Frank Li , Sascha Hauer , Russell King , Pengutronix Kernel Team , Fabio Estevam , Nick Desaulniers , Bill Wendling , Justin Stitt , imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev, stable@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260718111340.159896-1-linux@yoavmoshe.com> <3046e60d-509f-471f-bd15-3ce78c87500b@yoavmoshe.com> <20260721180950.GA3684684@ax162> <180001f5-bddd-4e58-8442-f7ef3c979500@yoavmoshe.com> <7f273a08-b29c-4e15-b340-898b251efe57@yoavmoshe.com> Content-Language: en-GB, sv-SE From: Yo'av Moshe In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ZohoMailClient: External On 2026-07-22 8:03 PM, Sami Tolvanen wrote: > As long as the C prototype for the assembly function matches the > function pointer type, the hashes should also match. Can you dump the > hash prefix from the OCRAM and compare it to the disassembly of the > call site? Here is what I saw when checking the disassembly in vmlinux: 1. Call site expected hash in pm-imx6.c: 0xA488EBFC 2. SYM_TYPED_FUNC_START hash prefix in suspend-imx6.S: 0xd4d4d4d4 It looks like because suspend-imx6.S is an assembly file, Clang emits the default assembly type ID (0xd4d4d4d4) for it, which doesn't match the C call site expectation (0xA488EBFC). Yo'av