From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B52DCC4338F for ; Sun, 1 Aug 2021 09:03:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8BA0D61042 for ; Sun, 1 Aug 2021 09:03:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231425AbhHAJDt (ORCPT ); Sun, 1 Aug 2021 05:03:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231363AbhHAJDs (ORCPT ); Sun, 1 Aug 2021 05:03:48 -0400 Received: from mail-pl1-x636.google.com (mail-pl1-x636.google.com [IPv6:2607:f8b0:4864:20::636]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E3701C06175F for ; Sun, 1 Aug 2021 02:03:40 -0700 (PDT) Received: by mail-pl1-x636.google.com with SMTP id e5so16235885pld.6 for ; Sun, 01 Aug 2021 02:03:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=gUiNM59ujHzjyyoWPo/W3emPcp8EnI8sdNh//LNYp4Q=; b=VCHLA+6KQNv0D71Znq1YnUPiH2pOLPHK3TvC6KVYA7/pHGL8Y7LD0+EhQ2Q4Ynzs4P EA2tVpM5uHiYchlUNWyHE9i19lke6hK2S9vevJaqL0blBoBlLaqi/yYrBs3e/xbQQ56J 7ZB6vk2B6kp3soD1a1DxypTuIKAgCGSZlZEzHmiOPlTiBtVER+vMZZ0hN+BohrGdTOfa IhTRlpu4ndrw/hu1N2JFU4zPFCaoPc/pWu0CK2s/hkFKGQioAHZjwiDlbv7Dls4WQg5d BQ0ZS29t7ciIrMy1LluYdmJSGQMiW6bxsPophgOmcmhu2M0dJZweE8drELy1EJ29VQkU 4BBw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=gUiNM59ujHzjyyoWPo/W3emPcp8EnI8sdNh//LNYp4Q=; b=rWnoc6DPiaX5wn0b0zB/Wnq+hox4BB8qnMsaR6MtffdDwbjQIgEfY/XlZolafa8+5P b20mu5SjeqS20N/kqu8YbJ+qHXckNUlYesl8h301lo11ASwzM3ZhHs4gpIfh2QnNF8o5 EbQNskDXg0Qb5F1mUWiwd9IKOPsiP2NfboMFsH7IISA4V1kzjsM8B/+ajReCO9PGbZ3+ UHfuiUrNq6L3jHsBOUAXgtwCPz1Ff7zNmTUh5ASirpjuny7bBTnMBksauO4K62hIJIwk I6U5u8bFlk07MdMGBQ0D3q3DoSqHAhCqYwR+C321oRybi1d3hCsn7weaxFd+y3gZIHMT BiCg== X-Gm-Message-State: AOAM532EgT532t4v8RBEj+5Ym9WX4M2bSxJIjCk041dkEe4Em9M/Im5I TgMwYqEBOevdZGiYknrr1FckO+JA1lBEDAvOPLigzpuDEVg= X-Google-Smtp-Source: ABdhPJwut4BAlHu1x9WHUnIp/2QbXYEuJk8Mo6cuG4IjAHQGmPeMGlcWzK2l8fspqmkl9ObUShQ4EVm1KFaCQoRdRTM= X-Received: by 2002:a62:1d06:0:b029:3ab:9703:b6b8 with SMTP id d6-20020a621d060000b02903ab9703b6b8mr11316104pfd.0.1627808620483; Sun, 01 Aug 2021 02:03:40 -0700 (PDT) MIME-Version: 1.0 From: nil Yi Date: Sun, 1 Aug 2021 17:03:30 +0800 Message-ID: Subject: [BUG]drivers: usb: serial: mos7840.c: dangling pointer in function mos7840_open To: johan@kernel.org, linux-usb@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Hi, there is a dangling pointer in mos7840_port->write_urb_pool[j] in function mos7840_open in v5.14-rc3. in function mos7840_open err path : 717: err: 718: for (j = 0; j < NUM_URBS; ++j) { 719: urb = mos7840_port->write_urb_pool[j]; 720: if (!urb) 721: continue; 722: kfree(urb->transfer_buffer); 723: usb_free_urb(urb); } leave a dangling pointer here, I'm not sure whether it can be triggered somewhere. Any feedback would be appreciated, thanks :) Best wishes, Nil Yi