[{"id":38962,"web_url":"https://patchwork.libcamera.org/comment/38962/","msgid":"","date":"2026-05-27T12:55:24","subject":"Re: [PATCH] pipeline: rpi: Fix crash when configuring timeout","submitter":{"id":34,"url":"https://patchwork.libcamera.org/api/people/34/","name":"Naushir Patuck","email":"naush@raspberrypi.com"},"content":"Hi Nick,\n\nThanks for the fix.\n\nOn Wed, 27 May 2026 at 11:26, Nick Hollinghurst <\nnick.hollinghurst@raspberrypi.com> wrote:\n\n> When loading a config containing a nonzero \"camera_timeout_value_ms\"\n> (as is required for externally-triggered cameras) it would crash as\n> the pipeline handler tried to access both the IPA and frontEndDevice\n> before either had been created. Re-order to avoid the crash.\n>\n> Fixes: cc74afcdbd3e (\"Make the controller min frame duration configurable\")\n>\n> Signed-off-by: Nick Hollinghurst \n>\n\nReviewed-by: Naushir Patuck \n\n\n> ---\n> .../pipeline/rpi/common/pipeline_base.cpp | 16 ++++++++++------\n> 1 file changed, 10 insertions(+), 6 deletions(-)\n>\n> diff --git a/src/libcamera/pipeline/rpi/common/pipeline_base.cpp\n> b/src/libcamera/pipeline/rpi/common/pipeline_base.cpp\n> index ace38997..263a4838 100644\n> --- a/src/libcamera/pipeline/rpi/common/pipeline_base.cpp\n> +++ b/src/libcamera/pipeline/rpi/common/pipeline_base.cpp\n> @@ -878,6 +878,16 @@ int\n> PipelineHandlerBase::registerCamera(std::unique_ptr &camera\n> data->ipa_->setLensControls.connect(data,\n> &CameraData::setLensControls);\n> data->ipa_->metadataReady.connect(data,\n> &CameraData::metadataReady);\n>\n> + /*\n> + * Disable the IPA signal to control timeout, when there is a\n> + * user-requested value. We do this here now that the IPA and\n> + * front end device are both initialized.\n> + */\n> + if (data->config_.cameraTimeoutValue) {\n> + data->ipa_->setCameraTimeout.disconnect();\n> +\n> data->frontendDevice()->setDequeueTimeout(data->config_.cameraTimeoutValue\n> * 1ms);\n> + }\n> +\n> return 0;\n> }\n>\n> @@ -1145,12 +1155,6 @@ int CameraData::loadPipelineConfiguration()\n> config_.cameraTimeoutValue =\n> phConfig[\"camera_timeout_value_ms\"].get int>(config_.cameraTimeoutValue);\n>\n> - if (config_.cameraTimeoutValue) {\n> - /* Disable the IPA signal to control timeout and set the\n> user requested value. */\n> - ipa_->setCameraTimeout.disconnect();\n> -\n> frontendDevice()->setDequeueTimeout(config_.cameraTimeoutValue * 1ms);\n> - }\n> -\n> config_.controllerMinFrameDurationUs =\n>\n> phConfig[\"controller_min_frame_duration_us\"].get(config_.controllerMinFrameDurationUs);\n>\n> --\n> 2.47.3\n>\n>","headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 7A29EBDCBC\n\tfor ;\n\tWed, 27 May 2026 12:56:05 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 7E1A26302A;\n\tWed, 27 May 2026 14:56:04 +0200 (CEST)","from mail-vk1-xa2d.google.com (mail-vk1-xa2d.google.com\n\t[IPv6:2607:f8b0:4864:20::a2d])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 4BACE62FE1\n\tfor ;\n\tWed, 27 May 2026 14:56:02 +0200 (CEST)","by mail-vk1-xa2d.google.com with SMTP id\n\t71dfb90a1353d-56fadbf56c2so686707e0c.3\n\tfor ;\n\tWed, 27 May 2026 05:56:02 -0700 (PDT)"],"Authentication-Results":"lancelot.ideasonboard.com; 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boundary=\"0000000000003433020652cc22df\"","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "}},{"id":38963,"web_url":"https://patchwork.libcamera.org/comment/38963/","msgid":"","date":"2026-05-27T12:57:57","subject":"Re: [PATCH] pipeline: rpi: Fix crash when configuring timeout","submitter":{"id":42,"url":"https://patchwork.libcamera.org/api/people/42/","name":"David Plowman","email":"david.plowman@raspberrypi.com"},"content":"Hi Nick\n\nThanks for the patch!\n\nOn Wed, 27 May 2026 at 13:56, Naushir Patuck wrote:\n>\n> Hi Nick,\n>\n> Thanks for the fix.\n>\n> On Wed, 27 May 2026 at 11:26, Nick Hollinghurst wrote:\n>>\n>> When loading a config containing a nonzero \"camera_timeout_value_ms\"\n>> (as is required for externally-triggered cameras) it would crash as\n>> the pipeline handler tried to access both the IPA and frontEndDevice\n>> before either had been created. Re-order to avoid the crash.\n>>\n>> Fixes: cc74afcdbd3e (\"Make the controller min frame duration configurable\")\n>>\n>> Signed-off-by: Nick Hollinghurst \n>\n>\n> Reviewed-by: Naushir Patuck \n\nReviewed-by: David Plowman \n\nDavid\n\n>\n>>\n>> ---\n>> .../pipeline/rpi/common/pipeline_base.cpp | 16 ++++++++++------\n>> 1 file changed, 10 insertions(+), 6 deletions(-)\n>>\n>> diff --git a/src/libcamera/pipeline/rpi/common/pipeline_base.cpp b/src/libcamera/pipeline/rpi/common/pipeline_base.cpp\n>> index ace38997..263a4838 100644\n>> --- a/src/libcamera/pipeline/rpi/common/pipeline_base.cpp\n>> +++ b/src/libcamera/pipeline/rpi/common/pipeline_base.cpp\n>> @@ -878,6 +878,16 @@ int PipelineHandlerBase::registerCamera(std::unique_ptr &camera\n>> data->ipa_->setLensControls.connect(data, &CameraData::setLensControls);\n>> data->ipa_->metadataReady.connect(data, &CameraData::metadataReady);\n>>\n>> + /*\n>> + * Disable the IPA signal to control timeout, when there is a\n>> + * user-requested value. We do this here now that the IPA and\n>> + * front end device are both initialized.\n>> + */\n>> + if (data->config_.cameraTimeoutValue) {\n>> + data->ipa_->setCameraTimeout.disconnect();\n>> + data->frontendDevice()->setDequeueTimeout(data->config_.cameraTimeoutValue * 1ms);\n>> + }\n>> +\n>> return 0;\n>> }\n>>\n>> @@ -1145,12 +1155,6 @@ int CameraData::loadPipelineConfiguration()\n>> config_.cameraTimeoutValue =\n>> phConfig[\"camera_timeout_value_ms\"].get(config_.cameraTimeoutValue);\n>>\n>> - if (config_.cameraTimeoutValue) {\n>> - /* Disable the IPA signal to control timeout and set the user requested value. */\n>> - ipa_->setCameraTimeout.disconnect();\n>> - frontendDevice()->setDequeueTimeout(config_.cameraTimeoutValue * 1ms);\n>> - }\n>> -\n>> config_.controllerMinFrameDurationUs =\n>> phConfig[\"controller_min_frame_duration_us\"].get(config_.controllerMinFrameDurationUs);\n>>\n>> --\n>> 2.47.3\n>>","headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 47DF6BDCBC\n\tfor ;\n\tWed, 27 May 2026 12:58:11 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 5961A63020;\n\tWed, 27 May 2026 14:58:10 +0200 (CEST)","from mail-ej1-x62f.google.com (mail-ej1-x62f.google.com\n\t[IPv6:2a00:1450:4864:20::62f])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 00A316301A\n\tfor ;\n\tWed, 27 May 2026 14:58:08 +0200 (CEST)","by mail-ej1-x62f.google.com with SMTP id\n\ta640c23a62f3a-be4344dde59so87096066b.3\n\tfor ;\n\tWed, 27 May 2026 05:58:08 -0700 (PDT)"],"Authentication-Results":"lancelot.ideasonboard.com; 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