From patchwork Fri Sep 13 03:36:27 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Liao Chen X-Patchwork-Id: 828589 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E4A691B653C; Fri, 13 Sep 2024 03:45:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.187 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726199117; cv=none; b=htWj853iUPmJed2622bybtV5Pjb7W2aeQ0s6bI5YIohYaJQwQyhSEMaIGBSZb3v/XqVDKKRvp63zu58A1MaLf2G/8wUqPF22+WAQyPMacmugY/x98cVD4wmtMIV2l4REtA8bdWVF71JPe3ChwC6WqSwDgBLHRaFhVcgl7izyUmI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726199117; c=relaxed/simple; bh=8CiYljOttU3RMsKwHDx5X/Ct2ctl0M+3ISzbVKy3LZs=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=B0D6t2fZc0sHhh+ImxA3uo0VdomvHpBd3CWUmddBwIegjsK/+a0cXoMIk8HMDFQk1KVagx2c/B2lGBiXazIrMbNpMyD8r/9Qa9LupCgrn25YhurYR5Pzq4dYRQt0Zm0YyqUAIN7FKAx2VEGDWKA/1jK10+9THqWT8ZWfWtvThQU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.187 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.88.194]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4X4gCq2xVTzyRsv; Fri, 13 Sep 2024 11:44:23 +0800 (CST) Received: from kwepemj200011.china.huawei.com (unknown [7.202.194.23]) by mail.maildlp.com (Postfix) with ESMTPS id 02A9D1401F0; Fri, 13 Sep 2024 11:45:11 +0800 (CST) Received: from huawei.com (10.67.174.77) by kwepemj200011.china.huawei.com (7.202.194.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 13 Sep 2024 11:45:10 +0800 From: Liao Chen To: , , CC: , , , , Subject: [PATCH] scsi: qedf: Fix potential null pointer dereference Date: Fri, 13 Sep 2024 03:36:27 +0000 Message-ID: <20240913033627.1465713-1-liaochen4@huawei.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemj200011.china.huawei.com (7.202.194.23) qedf is checked to be null in this if branch, accessing its member will cause a null pointer dereference. Fix it by passing a direct NULL into the error function. Fixes: 51071f0831ea ("scsi: qedf: Don't process stag work during unload and recovery") Signed-off-by: Liao Chen --- drivers/scsi/qedf/qedf_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c index 4813087e58a1..9d4738db0e51 100644 --- a/drivers/scsi/qedf/qedf_main.c +++ b/drivers/scsi/qedf/qedf_main.c @@ -4021,7 +4021,7 @@ void qedf_stag_change_work(struct work_struct *work) container_of(work, struct qedf_ctx, stag_work.work); if (!qedf) { - QEDF_ERR(&qedf->dbg_ctx, "qedf is NULL"); + QEDF_ERR(NULL, "qedf is NULL"); return; }