From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpout-04.galae.net (smtpout-04.galae.net [185.171.202.116]) (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 E90A9296BD6 for ; Fri, 17 Oct 2025 16:21:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.171.202.116 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760718104; cv=none; b=iXaQ7Q1fLA0WusXBi5ZQgo+mb/9NKrE9KLPOMvv3ehSboImgPjVDtr8lGyB0BpmovkZy37Z0MnboiaL9NbIbOU1Ml1A6PzyYk+p46ha1GGVkTMAvkFi6dSRrDp5D7cAHYyG3+kcW3EGVCbxEYVJRHpovOzhGaxb7MpyCh0ZqBFE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760718104; c=relaxed/simple; bh=RRTwAZLk/2qwdrsLFWGGbVFAHrlDdK2F4Drz9CQFSks=; h=Mime-Version:Content-Type:Date:Message-Id:From:To:Cc:Subject: References:In-Reply-To; b=Z2RBnVPc1DSzkWoFCDxJLwYU9bmvWQUZEE/1TLZ/7kEWmBgkB2p908gaFL/8Lm9aitoBA65Pr7bipGjggkMx+20cv/HY5GM1X6SNRVc8++wE2XZMF5iFzS2EI9zYMhcKnGfpGH4WXqUsNA8J5Xw7mkfM+tXfaTLpEN3Y4LxjLd4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=LjJoAxXp; arc=none smtp.client-ip=185.171.202.116 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="LjJoAxXp" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-04.galae.net (Postfix) with ESMTPS id EDCE3C041F9; Fri, 17 Oct 2025 16:21:21 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 439F4606DB; Fri, 17 Oct 2025 16:21:41 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 01A30102F2326; Fri, 17 Oct 2025 18:21:35 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1760718100; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=M92WI+PGFdvoEo5x/+VF/yQMrWADVhb1nigV4QXWseo=; b=LjJoAxXpFtx6zaAAFyn0jnPHV3jwcS75RTNQnQL3aSoDj+iA6M0I9VAo4P4cX9+vv6t2mX sGRWUlywn6/2wGFoIxFhaU2SJ2Up7Sw+t0yF9IsNRkbmOsKKHqkXydQDPtuQT2lzbzrJUW LLur9aDt+drjnUsk28si/PDdwcMHgJO0mQ9ekTEq00L2TlD2iRUZg1HiJ91lyrJNwpo4v0 zUoEB/Kfhh8MdhzzgCSWiwGKNcF8EboAAk29M9jQCljnY4BwiGwd/36r/F38tVM8Hn33aj VQ9/1jeFuf/XHTBgVIhAycea1PnNZGDOu/cg/HUwfsVc23iqgSwG6u8rOWTRhg== Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Fri, 17 Oct 2025 18:21:35 +0200 Message-Id: From: "Luca Ceresoli" To: "Luca Ceresoli" , "Naresh Kamboju" , , "open list" , , "Linux Regressions" Cc: "Dmitry Baryshkov" , "Simona Vetter" , "David Airlie" , "Maxime Ripard" , "Arnd Bergmann" , "Dan Carpenter" , "Anders Roxell" , "Ben Copeland" Subject: Re: next-20251014: Internal error: Oops: drm_bridge_connector_hdmi_cec_init drmm_connector_hdmi_cec_register X-Mailer: aerc 0.20.1 References: In-Reply-To: X-Last-TLS-Session-Version: TLSv1.3 Hello, On Thu Oct 16, 2025 at 3:36 PM CEST, Luca Ceresoli wrote: > Hello Naresh, > > On Thu Oct 16, 2025 at 12:52 PM CEST, Naresh Kamboju wrote: >> On Thu, 16 Oct 2025 at 16:14, Naresh Kamboju = wrote: >>> >>> While booting and loading kernel modules on dragonboard 410c board >>> with Linux next >>> kernel next-20251014 and next-20251015 the following crash noticed, >>> >>> First seen on next-20251014 >>> Good: next-20251013 >>> Bad: next-20251014 >>> >>> Regression Analysis: >>> - New regression? yes >>> - Reproducibility? yes >>> >>> Boot regressions: next-20251014: Internal error: Oops: >>> drm_bridge_connector_hdmi_cec_init drmm_connector_hdmi_cec_register > > Thanks for the report. > > This looks like the same issue reported here: > https://lore.kernel.org/all/336fbfdd-c424-490e-b5d1-8ee84043dc80@samsung.= com/ > > I'm writing a fix right now, will send it today if all goes well. Here's the fixed version: https://lore.kernel.org/lkml/20251017-drm-bridge-alloc-getput-bridge-connec= tor-fix-hdmi_cec-v2-0-667abf6d47c0@bootlin.com/ Luca -- Luca Ceresoli, Bootlin Embedded Linux and Kernel engineering https://bootlin.com