From nobody Sat May 30 17:43:33 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=1779750238; cv=none; d=zohomail.com; s=zohoarc; b=bEjLAItzMYLHkTvGbbQ5A2CTXUJRo2qQysWl/C/+7IBBkfphBjkx9utKn5cNwlgWkJV9DOHWqN+vNmDx5PyvEUAHVo9pSQLJzzthqPLdAfpzFSikcIZy/HZTRE73uwNi1IntT4kToHiwJVUvp3fKT0sdxMamA2eS1HUR6YcQ64w= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1779750238; 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=fJqVDKluOa4/c1wsTNSYyeCKQDQVsUHjJqM4MzpAVvQ=; b=djtFlvdQG39oAVSo/98lD8p1MgL6I3EJVNiuTJTb4yhm2b68ThIR1L/AwbALWdTCqDI78KXemeXklOxl8lGh9czCiJs8YCDisvjn9VW/PB4lLd3HxEzPxWJQF1USz5rDzB/jRDJ17W1b73Q7nCNu63tQ2wLsBmwgfixVHf6R6O0= 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 1779750237995975.2645612720621; Mon, 25 May 2026 16:03:57 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wReKX-0005nd-DR; Mon, 25 May 2026 19:03:29 -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 1wReKU-0005nA-89 for qemu-devel@nongnu.org; Mon, 25 May 2026 19:03:26 -0400 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wReKS-0000iV-GY for qemu-devel@nongnu.org; Mon, 25 May 2026 19:03:25 -0400 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 2D4CD60018; Mon, 25 May 2026 23:03:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2A3451F000E9; Mon, 25 May 2026 23:03:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779750194; bh=fJqVDKluOa4/c1wsTNSYyeCKQDQVsUHjJqM4MzpAVvQ=; h=From:To:Cc:Subject:Date; b=fhZvAI7MiClqr6pEspdGwpv2dly2J9y+jGdjyU6UucwT/puxyqSlVVT8SywmHfoUR feDZwjPUXDUJZgurHuknpBBrUD3y4cQ9ZHO+bffsaG3qNYoqvc7e93J9gYx43ogc67 IjT4o8WH4gF9GuLroKEQZ4OsP7B0OhaHmQ8ytot+k0B/l8TSVEAoHPF1tkuX0Ga3zc NGP+jHuM7w/zmSUDp0tSFLzmujxAs64Lh7tP76kvbA3yGy0OENOVCfDfmmy4vgFAnr EYdzWRdRAupJcYpFoYLqbI5wuHh0ovVg/F2bykc2ygp2Y6q23ZHLl1N0zmvawcLhJy n/krRZv1WdMMw== From: Helge Deller To: qemu-devel@nongnu.org Cc: Helge Deller Subject: [PATCH] linux-user: Fix loading static ARM cortex-m55 binaries Date: Tue, 26 May 2026 01:03:08 +0200 Message-ID: <20260525230308.137009-1-deller@kernel.org> X-Mailer: git-send-email 2.54.0 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=2600:3c04:e001:324:0:1991:8:25; envelope-from=deller@kernel.org; helo=tor.source.kernel.org X-Spam_score_int: -24 X-Spam_score: -2.5 X-Spam_bar: -- X-Spam_report: (-2.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.445, 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: 1779750240997154100 Content-Type: text/plain; charset="utf-8" From: Helge Deller Static built ARM binaries for Cortex-m55 may have been linked to have their load address at address 0. When qemu-user is running as non-root user and thus will try to mmap() a host address which is smaller than mmap_min_addr (/proc/sys/vm/mmap_min_addr), it will fail with EPERM and as such loading those guest programs will fail. Avoid this EPERM failure by automatically choosing a valid starting guest_base address which has to be higher than mmap_min_addr. Signed-off-by: Helge Deller Resolves: https://gitlab.com/qemu-project/qemu/-/work_items/1890 --- linux-user/elfload.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 0e757787d2..152c122a23 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -1033,8 +1033,9 @@ static void pgb_dynamic(const char *image_name, uintp= tr_t guest_loaddr, uintptr_t brk, ret; PGBAddrs ga; =20 - /* Try the identity map first. */ - if (pgb_addr_set(&ga, guest_loaddr, guest_hiaddr, true)) { + /* Try the identity map first if guest_loadaddr is above mmap_min_addr= . */ + if (guest_loaddr >=3D mmap_min_addr && + pgb_addr_set(&ga, guest_loaddr, guest_hiaddr, true)) { brk =3D (uintptr_t)sbrk(0); if (pgb_try_mmap_set(&ga, 0, brk)) { guest_base =3D 0; --=20 2.54.0