From nobody Sun Jun 8 00:00:02 2025 Delivered-To: importer2@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+importer2=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1707978314; cv=none; d=zohomail.com; s=zohoarc; b=bd60HAIU9ml/cwFEHO2FxlZdfkk4doXhAc7NgGM5lk1vF4TTYLceFw1GHLr6dpCwNBBWo5KIL9jQL8tlYw9xfcMSWalUiktYSuHCvigmoRloflbd1WID53VKQK/OILlR9OR57yMxkchf32eF/m6dgvjlDhP9cyQEDS8UFgWubt4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1707978314; h=Content-Type: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=e+A2qkcrgjaI9rrkh97Ktn6PEwqN2bQkXlFCXE4NZ3E=; b=fTe86Z9NFrs9UCufiSURR9c3Cq4eo/UNsLnWOKCq0nXfM/Qqe6zFAY9aLHmbsg86JqIUKrgy5qEuvanDDT94jaFCFWuUYtbgYjlT/O9+nKB9Ie1apuWYPn82wa9kGySQjjfEhI/pcQFnx+Gy/zHK1H9NTG2RWp36o9teUv+9SSI= 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+importer2=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1707978314287325.7627246274358; Wed, 14 Feb 2024 22:25:14 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1raV7U-0003Es-O9; Thu, 15 Feb 2024 01:21:16 -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 1raV7Q-0002zh-Hv for qemu-devel@nongnu.org; Thu, 15 Feb 2024 01:21:12 -0500 Received: from mail-pj1-x1030.google.com ([2607:f8b0:4864:20::1030]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1raV7O-0005bp-Sv for qemu-devel@nongnu.org; Thu, 15 Feb 2024 01:21:12 -0500 Received: by mail-pj1-x1030.google.com with SMTP id 98e67ed59e1d1-290da27f597so413910a91.2 for ; Wed, 14 Feb 2024 22:21:10 -0800 (PST) Received: from stoup.. (173-197-098-125.biz.spectrum.com. [173.197.98.125]) by smtp.gmail.com with ESMTPSA id d5-20020a170902b70500b001d6f29c12f7sm464418pls.135.2024.02.14.22.21.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Feb 2024 22:21:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1707978069; x=1708582869; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=e+A2qkcrgjaI9rrkh97Ktn6PEwqN2bQkXlFCXE4NZ3E=; b=ZKKbMeDrMzEYzqVTYfXnb0dqw4ImR5L3YY2JHrGAmKx6W+nEcEDxLmRWrEKQEIKpdA WvF/ZUB0PcVoYx/q6VCzs1ClGfmIXIzkzclcvckkPRVYLfKvMk2TgqJJWfTudywh8w5o Ag+O4O+4ENtY8GEdlvoSrb7vyFSj/J+zzApJawOPrFoRLHc7vsYitfllLzFeRZivAI57 lMrvBcW7mqBLElvrQBPgF9OV+xUO+WhOhZFb/ezrRhLegjsW4yA2bXchu+gr6yZluNki zk6ZD8rBQOrBLE9sfHSDsovmL6iXzJaRRQFvlFZ5owSWagPgiBkNE5OGL7lzP4W7YH2l yD7w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707978069; x=1708582869; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=e+A2qkcrgjaI9rrkh97Ktn6PEwqN2bQkXlFCXE4NZ3E=; b=Z9WWISlzwyEQWJyuZUUTotT5WIOVJnkbAhV1Zm3P2xxHjE9WMxVnS1EDHBH6zJMTUN dLX4zmmXSFaQiU+pGk8SJ/usRpgW4kHCC61Q6tsGhksJjxCU+Rbj+4kZ551L0uSQLwyu UZouW4OfvUDxrWWNJ/1vfjTAoNRKhIPyqD7EmN9JA8ulUnyTcWjcoyLpYjpdnRvut+Zd 57c0KhB0NXFCj5JllNXaqhMr6tcj9rBvf2RZrV1AqsJjSA+lxOm0mp3UbR+NlkelyhlA MuYX/YwkaT1wJB1cNe5j8KGJJT5Fbc1SMfDuCqZ+aya3iPXXHT2/XnXPr9mscbVS6jLQ efsg== X-Gm-Message-State: AOJu0YxRQyR0Mxs1kesv8mPt1CD7G04c/qd//7UDsiJLAVORpUt2Bh/I 0feW1eCnrFjbsQAK3515tep2Q4J9vG+7JFJeCnH2z5590UDmBmPhomuiRr7URwOkAYLlpQX3jvY 8 X-Google-Smtp-Source: AGHT+IHvSotyUzofOW75hdefpNocwa7y+Z6VqrRB/m8C5gG3sEMq0eITnn4RgnW6bgNDGFYNVyAXsA== X-Received: by 2002:a17:90b:2308:b0:298:d43b:812e with SMTP id mt8-20020a17090b230800b00298d43b812emr882435pjb.7.1707978069512; Wed, 14 Feb 2024 22:21:09 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Ilya Leoshkevich , Helge Deller Subject: [PATCH v4 33/36] linux-user: Bound mmap_min_addr by host page size Date: Wed, 14 Feb 2024 20:20:15 -1000 Message-Id: <20240215062018.795056-34-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240215062018.795056-1-richard.henderson@linaro.org> References: <20240215062018.795056-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::1030; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1030.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1707978316450100007 Bizzarely, it is possible to set /proc/sys/vm/mmap_min_addr to a value below the host page size. Fix that. Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Ilya Leoshkevich Acked-by: Helge Deller Message-Id: <20240102015808.132373-32-richard.henderson@linaro.org> --- linux-user/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/linux-user/main.c b/linux-user/main.c index 12bb839982..551acf1661 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -901,7 +901,7 @@ int main(int argc, char **argv, char **envp) if ((fp =3D fopen("/proc/sys/vm/mmap_min_addr", "r")) !=3D NULL) { unsigned long tmp; if (fscanf(fp, "%lu", &tmp) =3D=3D 1 && tmp !=3D 0) { - mmap_min_addr =3D tmp; + mmap_min_addr =3D MAX(tmp, host_page_size); qemu_log_mask(CPU_LOG_PAGE, "host mmap_min_addr=3D0x%lx\n", mmap_min_addr); } --=20 2.34.1