From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f53.google.com (mail-wm1-f53.google.com [209.85.128.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 04A2E23E330 for ; Sat, 28 Mar 2026 10:00:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.53 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774692017; cv=none; b=FHfi1YXKtixOJPVIIdaq4med48D0PrklSMWEm/AdNepkKNriBd5FNzsdHQAa6/z2WGR/8lU7hCg7K2NTcWadAyxXkS5ocH2/4vYGx/dvUAnKJ42K6D5b+lbKI9N/irug8cPcLlm+GkJASIDyEpMTb6EUTjH7UH/VqXOT6qXKxx8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774692017; c=relaxed/simple; bh=DllPNEY5HJhelRRWtMlz2dJNBymbUWyXeyN0iDUfRcY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=dff5IVvrb13a1pCLzS+c7YoMML707UjmNAjxQ515B7ytUavvOZhmud1tJ8saM4dIYIN6Aja8TrQnD7oM5BA4B+QUaO+WplKK98hfZYOGj7jAO4I8k2XEC1teOojFOyJd0o29mtqtHv93QJ/Cv50oGk3Vj2v0OCDgUc39V8tIAWA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=it9SIwmA; arc=none smtp.client-ip=209.85.128.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="it9SIwmA" Received: by mail-wm1-f53.google.com with SMTP id 5b1f17b1804b1-486fb439299so26780725e9.0 for ; Sat, 28 Mar 2026 03:00:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1774692014; x=1775296814; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=K5w1Y1b3TwAv79lqz5JishdxGsbpyNm4BW0hPIUDQcY=; b=it9SIwmANu+b8aFxqnpuxVGu4DUGY1APNUgKaqkSa/m+1a4SlF5Z1q/wnb6+pwrVfg JqtOCuSRndPt1pGoXl/GNwI4I3XoR9hLCKjEdUg+gnqYREi4NkwXN8xY0sd9OvHKGu/L ivxLGfaC1COdvgxZBPT2zoKirf47iEqgv2dABnI0Vw4rT7KzmkW30NXjTZqB/AfQI5EQ x7COvAYrTMv1/j3xlDPjhg/ezpdYlDmM4S2NNpJJWHzr4OiBeoeWNYrxEM3hzBXuSwIU O9FP7Hb6H4JeylVbeN/IrXsUkb14D3x3KObv33ZMCzcV3Cw5JrrtPKKRxKLGrHyMhpyS EVEw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774692014; x=1775296814; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=K5w1Y1b3TwAv79lqz5JishdxGsbpyNm4BW0hPIUDQcY=; b=SKSNXMNqDF66zT/2h4XjnmZgnUSgToreXtOaKCyO7jVrPNosqZuwUNs6brkj6OiGUm 13mN4m70IP6sPMK4dB9D0vGY4dGehdzsYip75ZLptHcXaU9dMHNVf+snu3nPlPXrI+0k FFvJ/iRaQIkIlTQ/I19t7bvKgwBLgS+Md9zBUlLiv5ZX2dFgjA9qhkv1+XHABywqYr2b WWeHrzFnbEokNeJGnYtpfD71rAuMMmqmstcrfS8/umuO8NHK48J8vXq81ZgqPldvPM7C rfF6d5g2uRVwKn6iXBGGnahrHacDZD6JeQG1EhqAEosvQ+gJd007W9Tg8zKerh2M66k3 5u0A== X-Forwarded-Encrypted: i=1; AJvYcCWuZ7otcioAT39dW1zzBm7/e1hYfG/T4whvAFJfsdBEC6WzZeP94dATiE1M2nK4L3FEqFD41jc=@vger.kernel.org X-Gm-Message-State: AOJu0Yx7nN+idE1SjG4oFWz4hH6JA5SJnq6FUX1iZvmyQCsqLZOgLPfT XhYjXApBKrFFnVUpXFgjCNaWM4LQiOB0ddhMKr4J/ZyoWfiWt1AQ+ztU X-Gm-Gg: ATEYQzzzdIPVZw2B2BHEOJ6k8jhoqiJLAIGHH91GDcMSytE3gKqP66jR1SfZ1eu5XRm x4L7xhOMlCHCRgPySf6T4Xu4cSm/YXC1DUvOuI/V86x3xVGB3licZrwawmBfq/X+T5rSZ8gEHBh FtpREiYqFzov1bY2s8X1Hv+sPvA7KiohHZ5k6yLLYeZHryDnWkitYGpJjAUR+U0XSlIo8rOK3rc KXipNHLKDzqiU6gRdFjkiZxpK7DlWkbR62kO89cb+w0/js4ZNGrRmHgp9rSItPdi1cCWqS1oSyr +M/WaCaXrZZprstpGMwIi68628/gOoJhOsesqLqQwL08a+4eetbncw0FmTAwI8ZSlq6t44SW/m5 dtDMAS86D2iqEurcoucK/HpVgicNCoj86nOOr67lWU4szDRh58y8kgoSIMjVqQVmQgiU4j3cs2/ Yvt2aDw6Dg0E+AquCZyRyh8EFDwd0vOOxWRT0xpkP0mg1gsLtYl1f/BniZAmfj5jKW6yRSitH+b hhJcOC86lAYh13Pf4lgQFw= X-Received: by 2002:a05:600c:6814:b0:486:fbe1:2499 with SMTP id 5b1f17b1804b1-48727f7be29mr91414145e9.22.1774692014189; Sat, 28 Mar 2026 03:00:14 -0700 (PDT) Received: from dohko.chello.ie (188-141-5-72.dynamic.upc.ie. [188.141.5.72]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48722d4d884sm198418535e9.15.2026.03.28.03.00.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 28 Mar 2026 03:00:13 -0700 (PDT) From: David Carlier To: laurent.pinchart@ideasonboard.com, mchehab@kernel.org Cc: Frank.Li@nxp.com, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, jacopo@jmondi.org, aisheng.dong@nxp.com, guoniu.zhou@nxp.com, linux-media@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, David Carlier Subject: [PATCH v2] media: nxp: imx8-isi: fix memory leaks in probe error paths and remove Date: Sat, 28 Mar 2026 10:00:10 +0000 Message-ID: <20260328100010.41236-1-devnexen@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260327222711.268132-1-devnexen@gmail.com> References: <20260327222711.268132-1-devnexen@gmail.com> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit mxc_isi_probe() allocates isi->pipes with kzalloc_objs() but never frees it on any probe failure path or in mxc_isi_remove(), leaking the allocation on every failed probe and every normal unbind. Additionally, when mxc_isi_pipe_init() fails partway through the channel loop or when mxc_isi_v4l2_init() fails, the already initialized pipes are not cleaned up — their media entities and mutexes are leaked. Fix both by adding kfree(isi->pipes) to all probe error paths and to mxc_isi_remove(), and cleaning up already-initialized pipes in the err_xbar error path. Fixes: cf21f328fcaf ("media: nxp: Add i.MX8 ISI driver") Signed-off-by: David Carlier --- .../platform/nxp/imx8-isi/imx8-isi-core.c | 24 +++++++++++++++---- 1 file changed, 19 insertions(+), 5 deletions(-) diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c index 4bf8570e1b9e..ab32c5b6ac9c 100644 --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c @@ -490,33 +490,43 @@ static int mxc_isi_probe(struct platform_device *pdev) return -ENOMEM; isi->num_clks = devm_clk_bulk_get_all(dev, &isi->clks); - if (isi->num_clks < 0) + if (isi->num_clks < 0) { + kfree(isi->pipes); return dev_err_probe(dev, isi->num_clks, "Failed to get clocks\n"); + } isi->regs = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(isi->regs)) + if (IS_ERR(isi->regs)) { + kfree(isi->pipes); return dev_err_probe(dev, PTR_ERR(isi->regs), "Failed to get ISI register map\n"); + } if (isi->pdata->gasket_ops) { isi->gasket = syscon_regmap_lookup_by_phandle(dev->of_node, "fsl,blk-ctrl"); - if (IS_ERR(isi->gasket)) + if (IS_ERR(isi->gasket)) { + kfree(isi->pipes); return dev_err_probe(dev, PTR_ERR(isi->gasket), "failed to get gasket\n"); + } } dma_size = isi->pdata->has_36bit_dma ? 36 : 32; dma_set_mask_and_coherent(dev, DMA_BIT_MASK(dma_size)); ret = devm_pm_runtime_enable(dev); - if (ret) + if (ret) { + kfree(isi->pipes); return ret; + } ret = mxc_isi_crossbar_init(isi); - if (ret) + if (ret) { + kfree(isi->pipes); return dev_err_probe(dev, ret, "Failed to initialize crossbar\n"); + } for (i = 0; i < isi->pdata->num_channels; ++i) { ret = mxc_isi_pipe_init(isi, i); @@ -538,7 +548,10 @@ static int mxc_isi_probe(struct platform_device *pdev) return 0; err_xbar: + while (i--) + mxc_isi_pipe_cleanup(&isi->pipes[i]); mxc_isi_crossbar_cleanup(&isi->crossbar); + kfree(isi->pipes); return ret; } @@ -556,6 +569,7 @@ static void mxc_isi_remove(struct platform_device *pdev) mxc_isi_pipe_cleanup(pipe); } + kfree(isi->pipes); mxc_isi_crossbar_cleanup(&isi->crossbar); mxc_isi_v4l2_cleanup(isi); } -- 2.53.0