From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 C8EE4330B36; Fri, 17 Oct 2025 15:54:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760716460; cv=none; b=MYkIWE6LQTSXrdl3SOXX3MUZetNUq1Yvqmaaswc1RVJBUCYyCU9vni8geklZpEuPEJ3kJO4lL9Mfwb3oD9nWmgB/+D/agMF39pAg6EAK5q12eLb889AT7X4aHwNpN7gNd0TwLeRh82FyaCDnWq4PBhAeFR+Pva44HUYEva/+r3Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760716460; c=relaxed/simple; bh=vd9Dtknsg1n7hk/e4VVI5KX4RF/sQcP1RpDAL3tJ72Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fSj84VMI048LI1QQGpIiQ14BvpZVwXQ1ZQfIX8wtbwP8QJMnfL2FSKx14K4bsYtlSvh2DYYQ0IPa3B2s8O/hj1nackde8CsEJI8NbsX3jM+gTZOB7DPinkm4XiXN3Ic940/qTvoXsAdOu6XY6CMqiiYJYrXBS8zX4kHN4gdIaMw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=nWTPvAgb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="nWTPvAgb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5399FC4CEE7; Fri, 17 Oct 2025 15:54:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1760716460; bh=vd9Dtknsg1n7hk/e4VVI5KX4RF/sQcP1RpDAL3tJ72Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nWTPvAgbcsBIbFBo2GfbMFzJUeYtnYPwKDeAzjTyFpf1VwYyBW/1ph5olLVy3moTX 8bTDOsU1CVUSS2YlewyoMlK6ukCuNzXi2R0+QAajh37OnVjSU0dybiznaGrgwRA2Dr Bjtby2csJpikK38rt2fvEBD139X9T+XkAdSTmxMg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ma Ke , Andreas Larsson Subject: [PATCH 5.15 198/276] sparc: fix error handling in scan_one_device() Date: Fri, 17 Oct 2025 16:54:51 +0200 Message-ID: <20251017145149.699262505@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251017145142.382145055@linuxfoundation.org> References: <20251017145142.382145055@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ma Ke commit 302c04110f0ce70d25add2496b521132548cd408 upstream. Once of_device_register() failed, we should call put_device() to decrement reference count for cleanup. Or it could cause memory leak. So fix this by calling put_device(), then the name can be freed in kobject_cleanup(). Calling path: of_device_register() -> of_device_add() -> device_add(). As comment of device_add() says, 'if device_add() succeeds, you should call device_del() when you want to get rid of it. If device_add() has not succeeded, use only put_device() to drop the reference count'. Found by code review. Cc: stable@vger.kernel.org Fixes: cf44bbc26cf1 ("[SPARC]: Beginnings of generic of_device framework.") Signed-off-by: Ma Ke Reviewed-by: Andreas Larsson Signed-off-by: Andreas Larsson Signed-off-by: Greg Kroah-Hartman --- arch/sparc/kernel/of_device_32.c | 1 + arch/sparc/kernel/of_device_64.c | 1 + 2 files changed, 2 insertions(+) --- a/arch/sparc/kernel/of_device_32.c +++ b/arch/sparc/kernel/of_device_32.c @@ -387,6 +387,7 @@ static struct platform_device * __init s if (of_device_register(op)) { printk("%pOF: Could not register of device.\n", dp); + put_device(&op->dev); kfree(op); op = NULL; } --- a/arch/sparc/kernel/of_device_64.c +++ b/arch/sparc/kernel/of_device_64.c @@ -680,6 +680,7 @@ static struct platform_device * __init s if (of_device_register(op)) { printk("%pOF: Could not register of device.\n", dp); + put_device(&op->dev); kfree(op); op = NULL; }