From patchwork Thu Dec 9 08:28:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hangyu Hua X-Patchwork-Id: 12666021 X-Patchwork-Delegate: kuba@kernel.org 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 1776CC433F5 for ; Thu, 9 Dec 2021 08:29:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234117AbhLIIcc (ORCPT ); Thu, 9 Dec 2021 03:32:32 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33904 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233577AbhLIIcb (ORCPT ); Thu, 9 Dec 2021 03:32:31 -0500 Received: from mail-pf1-x444.google.com (mail-pf1-x444.google.com [IPv6:2607:f8b0:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 93172C061746; Thu, 9 Dec 2021 00:28:58 -0800 (PST) Received: by mail-pf1-x444.google.com with SMTP id 8so4767678pfo.4; Thu, 09 Dec 2021 00:28:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=vxr3shVG7qN/DbBNTNRxI1Vzvo0/YokyiEU01gJT4zY=; b=h8gKmrQgq3UN1DWUasdTXd35dn7wsBYe8wPxSW6Kv8CE0RqqQhINbRG5c9EamfhsNX jEJK2/UZ5FTxDNSihvoMC5OA+doeevnrtHZfFVBgHzssyGrw8XkXaZUUTfAchgzCp5wv oIRF4DHe0rvLypnUsQhG0kPvzXIogwPuQUIXDA58Irv3O3krQm0DJq94iA4AQkvzGhve XGf0mthWInB8ES0LMxdT7sLpJUw0U5tDPNX9mpnlDA3r65959JO4pmEmQoroDO4e3bxE UqsQCZJJDpp6sG0J2fEG7nCSqI+w0osFUNwD3ygyJkBUeDSmDz3yOUH82bS18KWensza DjXA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=vxr3shVG7qN/DbBNTNRxI1Vzvo0/YokyiEU01gJT4zY=; b=sI/01HSuSs9ZYtpPByUI8mUTPYkdDJdd2G6brhbXidiCE05Dm1CYE0krrTFOacJA5J KCiej4qHf9+yV9pJ52PIkL57qPXzIC99OQ8ILIQYd1TTB83YQoFPIh8df1hiuE6+OT28 GX15pZKTqISkg5geZBI341OGcDu1G72ljWS0E9xeF4sqh156a6Ydc6UCRRsGIh8+zo1r z/YAyY/DL1cyYMGr2DhmW7d2HnWPmkWf3uZYYgs3S5Tr8cRwUo2iGFMbZDpYHzmOd3m1 GFSYbALtrRgf1itm1sERZu5PqTcTbvI4EH7kaYL57suPZxEHkGVzo/ZyluzoNQBRySzv Z8Qg== X-Gm-Message-State: AOAM5306alm0WZOGYgNHIRwPboi24kXluW1yozcSpV+BLUHsJAsEv53U 4LiUV6I6WLm2dDpHsLjZTWtRVUKCyboZrnC9qHJ7wg== X-Google-Smtp-Source: ABdhPJyZLaQygmzR8Vq4P7ybZyNwRMoNJZ3CxGBnItfpFfMAMOqX6rQrAmGIi7vWINTl2oFnNz3Evw== X-Received: by 2002:a63:7907:: with SMTP id u7mr30531097pgc.465.1639038538170; Thu, 09 Dec 2021 00:28:58 -0800 (PST) Received: from slim.das-security.cn ([103.84.139.53]) by smtp.gmail.com with ESMTPSA id pj12sm8674294pjb.51.2021.12.09.00.28.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Dec 2021 00:28:57 -0800 (PST) From: Hangyu Hua To: courmisch@gmail.com, davem@davemloft.net, kuba@kernel.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Hangyu Hua Subject: [PATCH net] Phonet: refcount leak in pep_sock_accep Date: Thu, 9 Dec 2021 16:28:39 +0800 Message-Id: <20211209082839.33985-1-hbh25y@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org sock_hold(sk) is invoked in pep_sock_accept(), but __sock_put(sk) is not invoked in subsequent failure branches(pep_accept_conn() != 0). Signed-off-by: Hangyu Hua --- net/phonet/pep.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/phonet/pep.c b/net/phonet/pep.c index a1525916885a..b4f90afb0638 100644 --- a/net/phonet/pep.c +++ b/net/phonet/pep.c @@ -868,6 +868,7 @@ static struct sock *pep_sock_accept(struct sock *sk, int flags, int *errp, err = pep_accept_conn(newsk, skb); if (err) { + __sock_put(sk); sock_put(newsk); newsk = NULL; goto drop;