From patchwork Fri Sep 6 05:15:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Tokarev X-Patchwork-Id: 13793254 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C5ADFCD5BDD for ; Fri, 6 Sep 2024 05:19:41 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1smRLY-0004Fu-23; Fri, 06 Sep 2024 01:17:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1smRL9-0003wD-9m; Fri, 06 Sep 2024 01:17:04 -0400 Received: from isrv.corpit.ru ([86.62.121.231]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1smRL5-0007mi-Ez; Fri, 06 Sep 2024 01:16:56 -0400 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id 73AD98C119; Fri, 6 Sep 2024 08:15:16 +0300 (MSK) Received: from tls.msk.ru (mjt.wg.tls.msk.ru [192.168.177.130]) by tsrv.corpit.ru (Postfix) with SMTP id 2029213335F; Fri, 6 Sep 2024 08:16:34 +0300 (MSK) Received: (nullmailer pid 10399 invoked by uid 1000); Fri, 06 Sep 2024 05:16:33 -0000 From: Michael Tokarev To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, Zhao Liu , Li Zhijian , Xingtao Yao , Jonathan Cameron , "Michael S . Tsirkin" , Michael Tokarev Subject: [Stable-7.2.14 05/40] hw/cxl/cxl-host: Fix segmentation fault when getting cxl-fmw property Date: Fri, 6 Sep 2024 08:15:53 +0300 Message-Id: <20240906051633.10288-5-mjt@tls.msk.ru> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=86.62.121.231; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Zhao Liu QEMU crashes (Segmentation fault) when getting cxl-fmw property via qmp: (QEMU) qom-get path=machine property=cxl-fmw This issue is caused by accessing wrong callback (opaque) type in machine_get_cfmw(). cxl_machine_init() sets the callback as `CXLState *` type but machine_get_cfmw() treats the callback as `CXLFixedMemoryWindowOptionsList **`. Fix this error by casting opaque to `CXLState *` type in machine_get_cfmw(). Fixes: 03b39fcf64bc ("hw/cxl: Make the CXL fixed memory window setup a machine parameter.") Signed-off-by: Zhao Liu Reviewed-by: Li Zhijian Reviewed-by: Xingtao Yao Link: https://lore.kernel.org/r/20240704093404.1848132-1-zhao1.liu@linux.intel.com Signed-off-by: Jonathan Cameron Message-Id: <20240705113956.941732-2-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin (cherry picked from commit a207d5f87d66f7933b50677e047498fc4af63e1f) Signed-off-by: Michael Tokarev diff --git a/hw/cxl/cxl-host.c b/hw/cxl/cxl-host.c index 0fc3e57138..3253874322 100644 --- a/hw/cxl/cxl-host.c +++ b/hw/cxl/cxl-host.c @@ -282,7 +282,8 @@ static void machine_set_cxl(Object *obj, Visitor *v, const char *name, static void machine_get_cfmw(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { - CXLFixedMemoryWindowOptionsList **list = opaque; + CXLState *state = opaque; + CXLFixedMemoryWindowOptionsList **list = &state->cfmw_list; visit_type_CXLFixedMemoryWindowOptionsList(v, name, list, errp); }