From nobody Mon May 25 13:47:52 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=quarantine dis=none) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; t=1777045039; cv=none; d=zohomail.com; s=zohoarc; b=V2+oU3n4ydhkRRf0qAdzMbnfkyWGwzjFp7TiGkw8pOGl+cnQD5EVJyxjQt1wyf17TPDgo1QAia9UbfgdGHuMDq17TwwWUPjRfrTEiCYGzIMq8G/+t+9pCnmB8D1w3F6fFwn/ahEYoc3i0E3y/M3oPb7D785bQ3yu4d8Vm8EYM6I= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1777045039; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=EpliMF+ybQ2EEHUh2WGsjl2hqexm2ELXAKqZRN8zXA0=; b=Lf7kXYUjg6U8mGzLEZ+biucu1LO7OUQwJ33ygKU5bWra3x3orUadplkUzj7f1+R4No+K4384rzmKJ+RKJVYhkEf7ERpNVcofwlJ0mFHrTKOESkgap0gtuMpT46yqI13WRq2F1c1NcFCxPTjXolk/gw2jBe30MyipvrG8TUjkn+s= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=quarantine dis=none) Return-Path: Received: from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1777045039754682.9321718230079; Fri, 24 Apr 2026 08:37:19 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wGIa0-0000sP-CV; Fri, 24 Apr 2026 11:36:32 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wGIZw-0000r7-Jc for qemu-devel@nongnu.org; Fri, 24 Apr 2026 11:36:28 -0400 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wGIZt-0005QR-3v for qemu-devel@nongnu.org; Fri, 24 Apr 2026 11:36:26 -0400 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 1AD09408CA; Fri, 24 Apr 2026 15:36:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 18180C19425; Fri, 24 Apr 2026 15:36:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777044976; bh=Zm8Avroy565IPT/Xg1OhyVcsPSLIbJh/bHpAg/LHQFM=; h=From:To:Cc:Subject:Date:From; b=fVWj9sBJDC7vguAVrI+xdzU05Jj1aMuTeR71g9Wi323fLTx3ckJGwHQOXQZWnufpj Vchvm61u+a1Kz6fA6nfvT3G65aXMJNhRc6Dl4ptJewW5E/QJyG1riB8YPS0h7Sjy+v qJg5tVo6tlKs2k9IeFH4vWTrRIr8Ug8Kw8sqgrd1SY9E2AXpVDco2efYh5lEOWq5jr VWSGcz2Kcv/sC6lX0K4dl2YUK1CYuW2LL3kCrdnyqLXJIUE6VfhABF48YlrOzwFo7+ d+kf/aOvXiV4dkpY3Vkxb/wJVfKEhWx6TFFKC1M6vDP/tq58LWSHOBJGb0nLu4VSxu 6r+rp36oJ8/OA== From: Helge Deller To: qemu-devel@nongnu.org Cc: Helge Deller , Peter Hartley Subject: [PATCH] linux-user: Use abi_int for imr_ifindex in ip_mreqn struct Date: Fri, 24 Apr 2026 17:36:00 +0200 Message-ID: <20260424153600.46116-1-deller@kernel.org> X-Mailer: git-send-email 2.53.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists1p.gnu.org; Received-SPF: pass client-ip=2600:3c0a:e001:78e:0:1991:8:25; envelope-from=deller@kernel.org; helo=sea.source.kernel.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @kernel.org) X-ZM-MESSAGEID: 1777045042893158500 Content-Type: text/plain; charset="utf-8" From: Helge Deller Peter Hartley noticed, that in the qemu code the imr_ifindex member of struct target_ip_mreq needs to be of type "int" instead of "long", which is what the Linux kernel uses on all architectures. Adjust the type accordingly, and add a QEMU_BUILD_BUG_ON() checker to prevent such issues in the future. This change should fix multicast issues when using hosts and guests with different endianess or bit size. Reported-by: Peter Hartley Resolves: https://gitlab.com/qemu-project/qemu/-/work_items/2553 Signed-off-by: Helge Deller --- linux-user/syscall.c | 2 ++ linux-user/syscall_defs.h | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 910a4da0a6..4594909242 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -2161,6 +2161,8 @@ static abi_long do_setsockopt(int sockfd, int level, = int optname, =20 QEMU_BUILD_BUG_ON(sizeof(struct ip_mreq) !=3D sizeof(struct target_ip_mreq)); + QEMU_BUILD_BUG_ON(sizeof(struct ip_mreqn) !=3D + sizeof(struct target_ip_mreqn)); =20 if (optname =3D=3D IP_MULTICAST_IF) { min_size =3D sizeof(struct in_addr); diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 138ce6abb1..b8511439da 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -210,7 +210,7 @@ struct target_ip_mreq { struct target_ip_mreqn { struct target_in_addr imr_multiaddr; struct target_in_addr imr_address; - abi_long imr_ifindex; + abi_int imr_ifindex; }; =20 struct target_ip_mreq_source { --=20 2.53.0