From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.9]) (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 3D4F2299920; Sat, 12 Sep 2026 10:23:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789208622; cv=none; b=Ag4HyeHq/B/3EK0lvfFHBNSaT5W196DpZ5Xr6zoaRYu8L/sTMbXb7xjASlF/aPNnzVhIlSu8bH0j7uV3A+fE0xe9/492dDiZvCmckPH6sQXC5vWoSZMTx31uXDw0fsdJqx5KzvHmQpkBPsFr/pctv6eJAMBNX8Yap/AdXKOtur4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789208622; c=relaxed/simple; bh=1MgsdZqFByEuKZbj3wzMFofTkdE4lSy2fbRuCMSFLrs=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=TWcLATBC6LIOJrJnnAeLV/IBidPFlrdFz+Dp2AiXvgKxMYBBZ3fX4As7Fc9VRKppIYZld8HmyDCARstczycRs6YSV9b/VSoOiGZr2t9udTMwsy57hKzOvlPVYbxRR+RAA4FhAsfIJsClQFGlrFLCjRb/TIUIZdq6anw04sMAWl8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=k1+nFDmS; arc=none smtp.client-ip=192.198.163.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="k1+nFDmS" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1789208621; x=1820744621; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=1MgsdZqFByEuKZbj3wzMFofTkdE4lSy2fbRuCMSFLrs=; b=k1+nFDmSQc2bYGLMajvM4XRbdhMMrwGy3VxnUvf+HJnAMJGKSUoVa07p 1gC3/lk+xeWh2PC2ZpgoL+x3H3YDrRP+gjBI4WYYgSDKs90XaYzge9e8N iMqsVnmEywW7T2XnDBjhj9yMoMIkt+zAQ8ly3Y57sKwkAw47bcgFbA3rW FWfLX8o7QmmcLRS9xklEHsI9bXK72yvFPOqIVWToFJ5alCaXumLpr9JU4 5qeusqjo+gMEMXp08jiYDqeeomXqlLz+pu4Cm6WMmVXNFtwX7jmWH3ve3 wGA+xCX/56/MYxhbc/JRiSXNhgEafinQLlbkX10i4KRgBizbftet/9zjy g==; X-CSE-ConnectionGUID: 3jkKGLxHQ8yT5bsq8h29ng== X-CSE-MsgGUID: St51xmwiQgKaEl5gG8wXQQ== X-IronPort-AV: E=McAfee;i="6800,10657,11902"; a="100314336" X-IronPort-AV: E=Sophos;i="6.27,99,1787036400"; d="scan'208";a="100314336" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Sep 2026 03:23:40 -0700 X-CSE-ConnectionGUID: gKzK93CnRVCtZfNWW1yRGQ== X-CSE-MsgGUID: 4EEHJie0RKySbFwHZdR7OA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,99,1787036400"; d="scan'208";a="272669528" Received: from ettammin-mobl3.ger.corp.intel.com (HELO kekkonen.fi.intel.com) ([10.245.244.236]) by orviesa009-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Sep 2026 03:23:39 -0700 Received: from kekkonen.localdomain (localhost [IPv6:::1]) by kekkonen.fi.intel.com (Postfix) with SMTP id F36FB121BCE; Sat, 12 Sep 2026 13:23:42 +0300 (EEST) Date: Sat, 12 Sep 2026 13:23:42 +0300 Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo From: Sakari Ailus To: Nicola Fiorillo Cc: linux-media@vger.kernel.org, mchehab@kernel.org, hverkuil@kernel.org, antti.laakso@linux.intel.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 0/3] media: Two oopses and a hang when unbinding a streaming sensor Message-ID: References: <20260911194854.78894-1-nicfio@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260911194854.78894-1-nicfio@gmail.com> Hi Nicola, On Fri, Sep 11, 2026 at 09:48:51PM +0200, Nicola Fiorillo wrote: > Unbinding a camera sensor while a capture is running is a scenario that > nothing in the IPU6 path handles: the kernel oopses twice, corrupts memory > once, and leaves the application blocked forever. None of this is caused by > the sensor drivers themselves, and all four failures are present in > mainline today. Thanks for the patchset. These are known issues and unfortunately unbinding drivers while streaming isn't supported on MC-enabled drivers currently. This is a MC/V4L2 framework limitation and cannot be meaningfully worked around in drivers. -- Kind regards, Sakari Ailus