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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 0D8ECC4332F for ; Thu, 9 Sep 2021 20:46:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DAFD76054F for ; Thu, 9 Sep 2021 20:46:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232891AbhIIUrg (ORCPT ); Thu, 9 Sep 2021 16:47:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46706 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345513AbhIIUrf (ORCPT ); Thu, 9 Sep 2021 16:47:35 -0400 Received: from mail-oo1-xc31.google.com (mail-oo1-xc31.google.com [IPv6:2607:f8b0:4864:20::c31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9A4D1C061575 for ; Thu, 9 Sep 2021 13:46:22 -0700 (PDT) Received: by mail-oo1-xc31.google.com with SMTP id t2-20020a4ae9a2000000b0028c7144f106so988267ood.6 for ; Thu, 09 Sep 2021 13:46:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=K8QclyT6YwReg2Sbj3mCsph2JF/Ghr33vsgZB5KMcDU=; b=pvuKbZFzgjlAFn3C4uyXGsounND1LuyCDATrC8r0EdNEw5lESfKgzdKomfRs2S8E+l po8uTZoHbHY1DPUVAJ1lOu8lJ8OWTx7i4lBMzX1gjlXKq9gcn9jRQEPqUwk0VeTOzNPI YmaQuX64zVdBwmkkEkw1gBLeU8rTF3SNZioycdMRIhfAB0Xo2mjG3ppfeTIlK5UDKhZV NnYDF6bO9CeJWH3kDX2aZYDI3nEhjyE1vo+HFZBneVquqE2MtYUuTYA3mrYZ94Zg6shu xZt0JoyTDqj8J2B23sT21HaZYoI12PqbPlzMwQxd2XfNxUrtokKQ0ngf1LCarehNna3j u85A== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=K8QclyT6YwReg2Sbj3mCsph2JF/Ghr33vsgZB5KMcDU=; b=blkeSDgvOhv6fUqeQDYTUF3qO+v4meCEjnRX2N4Z4v7TpBRrCRGng0aDHhMgJljNLq yISfU7SuUPMnKC761uPTD7x/4+QH1nz06hj5Tazy0DVGKzGynpA6mb5aq1dMRpInP73X /MtULnI369H9hDF8UhzbAdzlwxDglgmqA4kUdiaRY/L19xpIqcujUyBvBjyWqG+tyQvq rUjjqA0jETl/lgniaxL6cr4dMjFn3JZHxV2YBlrKua4+s8kJggNtYQ878EemrJtfMaoO rR3Mx0S8gukWDSZzHpWpM7IwV4Cn2rnkMMZ4jx+Rv17w666iifSe98Toqsffpx9YDmFC rmUA== X-Gm-Message-State: AOAM532TfQj0t4aHfBTB7DTVU4kxab9i5ncuKD0F118MERyT6gzH+Vma u4YiptI/tuuTjcvpU9NkSUk= X-Google-Smtp-Source: ABdhPJxb4jAqL+jebywRgzelC52pjxfMIJRBgnch83MjxmrgwByHbm6boKyOAJJ8zxiu+pmEMrWIvw== X-Received: by 2002:a4a:db86:: with SMTP id s6mr1515247oou.58.1631220381979; Thu, 09 Sep 2021 13:46:21 -0700 (PDT) Received: from ubunto-21.tx.rr.com (2603-8081-140c-1a00-a0a5-b98f-837d-887f.res6.spectrum.com. [2603:8081:140c:1a00:a0a5:b98f:837d:887f]) by smtp.gmail.com with ESMTPSA id i9sm719892otp.18.2021.09.09.13.46.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Sep 2021 13:46:21 -0700 (PDT) From: Bob Pearson To: jgg@nvidia.com, zyjzyj2000@gmail.com, linux-rdma@vger.kernel.org, mie@igel.co.jp, bvanassche@acm.org Cc: Bob Pearson , Dan Carpenter Subject: [PATCH for-rc v3 2/6] RDMA/rxe: Fix memory allocation while locked Date: Thu, 9 Sep 2021 15:44:53 -0500 Message-Id: <20210909204456.7476-3-rpearsonhpe@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210909204456.7476-1-rpearsonhpe@gmail.com> References: <20210909204456.7476-1-rpearsonhpe@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org rxe_mcast_add_grp_elem() in rxe_mcast.c calls rxe_alloc() while holding spinlocks which in turn calls kzalloc(size, GFP_KERNEL) which is incorrect. This patch replaces rxe_alloc() by rxe_alloc_locked() which uses GFP_ATOMIC. This bug was caused by the below mentioned commit and failing to handle the need for the atomic allocate. Fixes: 4276fd0dddc9 ("Remove RXE_POOL_ATOMIC") Reported-by: Dan Carpenter Signed-off-by: Bob Pearson --- drivers/infiniband/sw/rxe/rxe_mcast.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/sw/rxe/rxe_mcast.c b/drivers/infiniband/sw/rxe/rxe_mcast.c index 0ea9a5aa4ec0..1c1d1b53312d 100644 --- a/drivers/infiniband/sw/rxe/rxe_mcast.c +++ b/drivers/infiniband/sw/rxe/rxe_mcast.c @@ -85,7 +85,7 @@ int rxe_mcast_add_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp, goto out; } - elem = rxe_alloc(&rxe->mc_elem_pool); + elem = rxe_alloc_locked(&rxe->mc_elem_pool); if (!elem) { err = -ENOMEM; goto out; -- 2.30.2