From nobody Mon Feb 9 00:07:04 2026 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 3DE8BEB64DD for ; Thu, 15 Jun 2023 12:54:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239688AbjFOMyD (ORCPT ); Thu, 15 Jun 2023 08:54:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50284 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238789AbjFOMyA (ORCPT ); Thu, 15 Jun 2023 08:54:00 -0400 Received: from zg8tndyumtaxlji0oc4xnzya.icoremail.net (zg8tndyumtaxlji0oc4xnzya.icoremail.net [46.101.248.176]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 773062135; Thu, 15 Jun 2023 05:53:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fudan.edu.cn; s=dkim; h=Received:From:To:Cc:Subject:Date: Message-Id; bh=EO5RSXH84NgtzlB/n7zUHf0E3OWx09iEwoSpUSmQVTc=; b=X iY2lMZt93+lkrhnOe24mjlDTk8o3lGHrf+cQLSyCEerOwJZNq+V11DJskMR0J7NM J3XS/ZaYp8fWP3zoFTW2FypZY+uQ3oi3VbmhpNWiACvSJFnXeK4KKh/Cr9BdGVH3 sAnpU/NyG99Uomg35iAwuRR933BI7oLHYiYd7DO45k= Received: from ubuntu.localdomain (unknown [183.157.8.87]) by app1 (Coremail) with SMTP id XAUFCgC3vfXgCYtk0Sz8AA--.58755S2; Thu, 15 Jun 2023 20:53:53 +0800 (CST) From: Chenyuan Mi To: axboe@kernel.dk Cc: sml.silence@gmail.com, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, Chenyuan Mi Subject: [PATCH] tools/io_uring: Fix missing check for return value of malloc() Date: Thu, 15 Jun 2023 05:53:50 -0700 Message-Id: <20230615125350.125557-1-cymi20@fudan.edu.cn> X-Mailer: git-send-email 2.17.1 X-CM-TRANSID: XAUFCgC3vfXgCYtk0Sz8AA--.58755S2 X-Coremail-Antispam: 1UD129KBjvdXoWrurWkuw13Kr18ZF4kWF1Utrb_yoW3ZFgE9F n2gryDWr93KrZ2kF1qkr48XryxGF43AF409Fsxtw13GF13CaykWFyDZrn5CFn3Xr1q9FW5 Aa98G343Ga429jkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbsAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oV Cq3wAac4AC62xK8xCEY4vEwIxC4wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC 0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUGVWUXwAv7VC2z280aVAFwI0_Jr0_Gr 1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IE rcIFxwCY02Avz4vE14v_Xr1l42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr 1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE 14v26r126r1DMIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7 IYx2IY6xkF7I0E14v26r1j6r4UMIIF0xvE42xK8VAvwI8IcIk0rVW3JVWrJr1lIxAIcVC2 z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnU UI43ZEXa7VUjE1v3UUUUU== X-CM-SenderInfo: isqsiiisuqikmt6i3vldqovvfxof0/ Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The malloc() function may return NULL when it fails, which may cause null pointer deference. Add Null=20 check for return value of malloc(). Found by our static analysis tool. Signed-off-by: Chenyuan Mi --- tools/io_uring/io_uring-bench.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tools/io_uring/io_uring-bench.c b/tools/io_uring/io_uring-benc= h.c index 7703f0118385..a7fedfdb9b84 100644 --- a/tools/io_uring/io_uring-bench.c +++ b/tools/io_uring/io_uring-bench.c @@ -560,6 +560,11 @@ int main(int argc, char *argv[]) pthread_create(&s->thread, NULL, submitter_fn, s); =20 fdepths =3D malloc(8 * s->nr_files); + if (!fdepths) { + printf("malloc failed"); + return 1; + } + reap =3D calls =3D done =3D 0; do { unsigned long this_done =3D 0; --=20 2.17.1