From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sender4-op-o11.zoho.com (sender4-op-o11.zoho.com [136.143.188.11]) (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 89D9F2E5B21; Fri, 17 Jul 2026 14:17:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.11 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784297839; cv=pass; b=SLxz1xBmX4wEEyX3mEt6BM/4cruYtaARkJ04kTUdX8ar/vFyD2TQDIGge/A7nCmaeCwqdZUCHnE4d9wE0ipQtAkxtSgouFS4fL87XU0CfdWkwwHPJMQaM8MaBS8ZUyQl+d9e0S5g6j4k1AEjHhIhL45RRkmx6GjuK2du/xzMh1g= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784297839; c=relaxed/simple; bh=1NzIq33Rk1skyMOZjZs6TKz7uab11yLglT40Ls7rp+c=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=K1P1J0kU0P14dL9EXMEy2xHpl1nAfO/GCKE/qsZejKCkki/AYK0+7cThQGeq2Qbs5P9z19gru+TPDHALLDSW24jpJCOQ1nnek4A8BgLzTMJfr5t27eEH3E0MvwMzzD9ZcI/HUKwbBAUh9sRGMh8KVdxgSUo1rq6zdEU+8SyOYO0= 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=IovFTTOd; arc=pass smtp.client-ip=136.143.188.11 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="IovFTTOd" ARC-Seal: i=1; a=rsa-sha256; t=1784297826; cv=none; d=zohomail.com; s=zohoarc; b=CDkMTTxuUuk7SF1KddlgIXqNWa+X+ryUZ6W7ZBjtxo2+tVrR8KCgP9NZPYzos+A7cA7MVkWBHliKgNl1v2IL3m+8NWaAH1CJ0Nm1fSJMP3fMugyZ1HtCUyGuB161uveZoGaRcrkaziS2TMdHTJi4/Cqi8fBjvEDmZ5emCh2GTy8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1784297826; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:MIME-Version:Message-ID:Subject:Subject:To:To:Message-Id:Reply-To; bh=epmNXjS7d94Ny0G3QrInR/+5Mb0BLlrxlvJkC02EnzE=; b=lxVfX2xUkWcVskpBJpSlIB/adeVtQFT4Q/gi1No48Zvh2n4F2/PtLd905EcLQV0qeSQPzM9Kb1nHAOGn5qKOeGJu4E/VrK2VAI40GaUcieNPecHI9CO8Cqsh77Ga1wMnsUNNhi6y3p+R1dfrF30U6Dbm3Sj861nCoGV5Sq0/X9c= 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=1784297826; s=zoho; d=yoavmoshe.com; i=linux@yoavmoshe.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:MIME-Version:Content-Transfer-Encoding:Message-Id:Reply-To; bh=epmNXjS7d94Ny0G3QrInR/+5Mb0BLlrxlvJkC02EnzE=; b=IovFTTOdduyuOxDCRlNJ6SZVMU99gB64Zo1SoVFAAIsF7eiDSryxPaP9nNl/sjpl SUsYKCICECArOdFUQdKF3wUYlI2WO2xKACFSd2KkW+Ysf6eiWwVSQRmTHKN+KEUbhBg k9RjqdlDBdQKK7p0oVVV8V40jCbL0UOaFp3cP0JI= Received: by mx.zohomail.com with SMTPS id 1784297824078494.6809075628678; Fri, 17 Jul 2026 07:17:04 -0700 (PDT) From: Yo'av Moshe To: Frank Li , Sascha Hauer , Russell King Cc: Pengutronix Kernel Team , Fabio Estevam , Nathan Chancellor , 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, Yo'av Moshe Subject: [PATCH] ARM: imx: Fix suspend/resume crash with Clang CFI Date: Fri, 17 Jul 2026 16:16:48 +0200 Message-ID: <20260717141648.1007059-1-linux@yoavmoshe.com> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-ZohoMailClient: External Relocated suspend code in OCRAM lacks compiler-generated CFI type signatures. When CONFIG_CFI=y is active, the indirect call to imx6_suspend_in_ocram_fn triggers a strict CFI violation panic. Annotate imx6q_suspend_finish with __nocfi to bypass CFI checking for this specific indirect call. Cc: stable@vger.kernel.org Signed-off-by: Yo'av Moshe --- Tested on a Kobo Clara HD (i.MX6SLL SoC) running postmarketOS edge. Before this patch, suspending the device caused an immediate silent hang requiring a hard-reboot. With this patch applied, suspend and resume work successfully. arch/arm/mach-imx/pm-imx6.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c index a671ca498..d9b0c1803 100644 --- a/arch/arm/mach-imx/pm-imx6.c +++ b/arch/arm/mach-imx/pm-imx6.c @@ -360,7 +360,7 @@ int imx6_set_lpm(enum mxc_cpu_pwr_mode mode) return 0; } -static int imx6q_suspend_finish(unsigned long val) +static int __nocfi imx6q_suspend_finish(unsigned long val) { if (!imx6_suspend_in_ocram_fn) { cpu_do_idle(); -- 2.55.0