From patchwork Fri Feb 24 13:02:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: void0red X-Patchwork-Id: 13151252 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4EE9FC61DA4 for ; Fri, 24 Feb 2023 13:02:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230147AbjBXNCy (ORCPT ); Fri, 24 Feb 2023 08:02:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59880 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229609AbjBXNCw (ORCPT ); Fri, 24 Feb 2023 08:02:52 -0500 Received: from mail-pf1-x42b.google.com (mail-pf1-x42b.google.com [IPv6:2607:f8b0:4864:20::42b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4903D40EA; Fri, 24 Feb 2023 05:02:51 -0800 (PST) Received: by mail-pf1-x42b.google.com with SMTP id z20so2516598pfa.13; Fri, 24 Feb 2023 05:02:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; 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=y4kmb//j1ktNG8kl3LbBuVMKD6p3YK/069wRAvDgHWw=; b=mEd284bJCKom9xBLW2zOrmCT8xA5odpc9QjO3PA2QljSYGVDQeV4mXvDJYOnXaSaW2 o8M4kuiwCDEpjemKSh1o8DJQSf5Mxt25/flaGMlhTvKK0WjaOMS9NE1x9GUXpzbSq0MF Pg90sZ/gQxTavGe+wiEK2MUockzdjrmNA5/B2Ux80v65qrXamhV8Ez29W1cD/geAhPzp QMTeU+aNmldJNLEuWvY0ZMEXDAOwHU2piSYVbfZ4fUxZUwmPSsmQpZn5/rWZhKdWfHWK L4Oz/WtdkKvh+LhMNGODQAveeL7V/eP3hE4RcQA7ngnG2GhlhjKJ2eXFWuuyJpQifAuS 02kw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=y4kmb//j1ktNG8kl3LbBuVMKD6p3YK/069wRAvDgHWw=; b=hGShIhNPuQIeYPhLdhdR97v5XJIUI2Hh71pIJ0+l3/EEHie3xOeHEltrDSykYwoTWx vbwRqk1W8U5mM5reB+SUj32btkQfCkqqqneH+MVEjyhfe+7EX49f61UW+fCse6apytB0 JKE666CGBIkvhE70PtGDZ7VqwyjD2qr1+64zv2wMTGG7JZWD7H0301v98kmPSyXXBxvG jElQcVO/n4dB2BEWrg4+IFiRUXoA83AszS8KtprPZFC1qldEr6NOWhWqCLXDpk4hUz6a rNDARGqijZaVGKAjM+g0iKiELzJTt1SQTrOiAw9rGTNn6Zrx77PiGlerBBUOS9ZAonjc l1vQ== X-Gm-Message-State: AO0yUKVmccAXl23ouLMB6bgyPc+h40eN3f99rt8nhi2LxDoMcFFIJkoT kMqzSkXXIbP6VL2YlWKHcok= X-Google-Smtp-Source: AK7set9JNZ+z4Pw5WWyTxCy35IDfUE/pXuaEz1Oa82RSwh1QPzoVZ5qthKPToi6qWCFxhYMazdfc5Q== X-Received: by 2002:a62:17c6:0:b0:5a8:b6cf:1a74 with SMTP id 189-20020a6217c6000000b005a8b6cf1a74mr13215268pfx.18.1677243770651; Fri, 24 Feb 2023 05:02:50 -0800 (PST) Received: from passwd123-ThinkStation-P920.. ([222.20.94.23]) by smtp.gmail.com with ESMTPSA id i13-20020aa78d8d000000b00592626fe48csm6545241pfr.122.2023.02.24.05.02.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Feb 2023 05:02:50 -0800 (PST) From: void0red To: mudongliangabcd@gmail.com Cc: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, void0red@gmail.com, eriri <1527030098@qq.com> Subject: [PATCH] usb: gadget: udc: replace kzalloc with devm_kzalloc in mv_udc_probe and add a check for this allocation. Date: Fri, 24 Feb 2023 21:02:35 +0800 Message-Id: <20230224130235.4028566-1-void0red@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Kang Chen This driver uses the unified memory management api, so replace kzalloc with devm_kzalloc to avoid a memory leak and add a check for this allocation. Reported-by: eriri <1527030098@qq.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=217081 Signed-off-by: Kang Chen --- drivers/usb/gadget/udc/mv_udc_core.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/usb/gadget/udc/mv_udc_core.c b/drivers/usb/gadget/udc/mv_udc_core.c index b397f3a84..08474c08d 100644 --- a/drivers/usb/gadget/udc/mv_udc_core.c +++ b/drivers/usb/gadget/udc/mv_udc_core.c @@ -2229,7 +2229,11 @@ static int mv_udc_probe(struct platform_device *pdev) INIT_LIST_HEAD(&udc->status_req->queue); /* allocate a small amount of memory to get valid address */ - udc->status_req->req.buf = kzalloc(8, GFP_KERNEL); + udc->status_req->req.buf = devm_kzalloc(&pdev->dev, 8, GFP_KERNEL); + if (!udc->status_req->req.buf) { + retval = -ENOMEM; + goto err_destroy_dma; + } udc->status_req->req.dma = DMA_ADDR_INVALID; udc->resume_state = USB_STATE_NOTATTACHED;