From nobody Sun Jan 25 11:57:33 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=1769181074; cv=none; d=zohomail.com; s=zohoarc; b=UfzrxNddiqQAb3Xc1nnxAixQMw+v1jh2+AOhgpzQCX5u3rSRRZTPQs1QNFoX9nTywA16UD5pgGc8cVMCKzHX1mXhZ8LxJY9tzu0JujHDcQUroBaI14ojzF9bcKijHo+i8+JlX4e9YsZUmSzLIvfrOria6DZfcweJeNCS9BF2Ogo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1769181074; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=R1wB8NkfzfA3JzW/q/mAJm7n50LnBqo5PgOKSSm98b8=; b=nOg0q//8+QGNt1FwS7lXQzkWD9Nv7gxtTtOWkZLkhTLvWWhraYVZ5eSOzCczeyyyP06fY2w78UCDc9IKUh6wxTmijY+WTb+69/StusYLscIXkmBrnlBX5jnhNp0THKImcce2uIgBGlgZvcZwkfRCPpc9sSstlrirvh9l5g0OPgg= 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1769181074704430.06722713177055; Fri, 23 Jan 2026 07:11:14 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vjInM-000750-Aa; Fri, 23 Jan 2026 10:09:58 -0500 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 1vjInE-0006zT-PT for qemu-devel@nongnu.org; Fri, 23 Jan 2026 10:09:49 -0500 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 1vjInD-0002xD-8c for qemu-devel@nongnu.org; Fri, 23 Jan 2026 10:09:48 -0500 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 9698A4369D; Fri, 23 Jan 2026 15:09:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 96323C19421; Fri, 23 Jan 2026 15:09:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769180978; bh=nJH+oIWdTGUsif757j8ogUbsj4cBfw0Vn03rJ5LhvTw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rTLrzOPIobqoyAdg3Oc/BA0hVob15CZjqzn2BjACs04ZzkQGFULM0F6t9CO6jvvcy +Vx3hELa7B3U9fH/XSLomzkljKz/g59YSNRkWzqZt4qdIXdgq388P0e/NUC5iDJDcd N9tfbw2O6FtcTX0254Yc9uaYQ/HoBAua14O82Xc73QzSVtCKYd3wH9Nl30Kud7gVTa m318HUcnFAMfWUP923QGw5mTWAACDP/nXUiZsXd/zB1JOjLGemTuRneUYtyQEAERDd 7i4OWkkvWc2GgEnA23pGfuxlszti+9k/Vv0BKPJo7u2Q/9P14nQW+BchBk3dP7XINp VURe137KzMEOw== From: deller@kernel.org To: Laurent Vivier , qemu-devel@nongnu.org Cc: Helge Deller Subject: [PATCH 2/3] linux-user: val3 parameter of futex() syscall needs endianess swapping Date: Fri, 23 Jan 2026 16:07:59 +0100 Message-ID: <20260123150921.17891-3-deller@kernel.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260123150921.17891-1-deller@kernel.org> References: <20260123150921.17891-1-deller@kernel.org> 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=lists.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: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.079, 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: 1769181076895154100 Content-Type: text/plain; charset="utf-8" From: Helge Deller The FUTEX_WAIT_BITSET and FUTEX_WAKE_BITSET operations use a val3 parameter for comparism. Even if this 32-bit parameter is in most cases 0xffffffff, ensure that we do a required endianess swapping if host and guest endianess differ. Signed-off-by: Helge Deller --- linux-user/syscall.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index c0a9a86529..7cb9de97e9 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -8106,7 +8106,10 @@ static int do_futex(CPUState *cpu, bool time64, targ= et_ulong uaddr, #endif switch (base_op) { case FUTEX_WAIT: + val =3D tswap32(val); + break; case FUTEX_WAIT_BITSET: + val3 =3D tswap32(val3); val =3D tswap32(val); break; case FUTEX_WAIT_REQUEUE_PI: @@ -8116,8 +8119,11 @@ static int do_futex(CPUState *cpu, bool time64, targ= et_ulong uaddr, case FUTEX_LOCK_PI: case FUTEX_LOCK_PI2: break; - case FUTEX_WAKE: case FUTEX_WAKE_BITSET: + val3 =3D tswap32(val3); + timeout =3D 0; + break; + case FUTEX_WAKE: case FUTEX_TRYLOCK_PI: case FUTEX_UNLOCK_PI: timeout =3D 0; --=20 2.52.0