From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 60CCDC83006 for ; Wed, 29 Apr 2020 17:41:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3BD3220B1F for ; Wed, 29 Apr 2020 17:41:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727117AbgD2Rl0 (ORCPT ); Wed, 29 Apr 2020 13:41:26 -0400 Received: from mail-qv1-f65.google.com ([209.85.219.65]:36958 "EHLO mail-qv1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727085AbgD2RlX (ORCPT ); Wed, 29 Apr 2020 13:41:23 -0400 Received: by mail-qv1-f65.google.com with SMTP id y19so1576519qvv.4; Wed, 29 Apr 2020 10:41:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=fzOcH/m5zVvfS8Ajxoe5u2BiH2fwXioZ/jPs2mokyCI=; b=fjvTBd5axusa8j50qjOLy/Pl5KexImAIDdG4tW1m+Ypn0HclwKdj8WWTsfcw13/KLi +PXmkISfJpFEUjfi7qvar3dVw6Omtvo3cxE1j9T/6OZf5F4R2u0eBx2/4JQNKdD486dn OGfVMwDkzItUc3C630f82rLvySv+/goJwqCCZkAWFqdWia3EmgRX7mT7xS23glLXvX2E NuDzr0U9pB4r5pOfqa811ZPRDEBB53drRMyu56J8RzyRGAcb9h4Yr73macVNKMF7Epll Lj4TwP4OyMMQ6geX5byMXU9VdQtKvWSXFhBNu4O0ot0YSiWm+LOL08AgqOoa572EeUal OEgQ== X-Gm-Message-State: AGi0PuYaIL+ar01BJRGAE+R0YtSFPeGdH2Q7kqnJ5j0LYdM2u0fshxmh sKCXT2VPX8rF1932yhJX+Hw= X-Google-Smtp-Source: APiQypJjWyRFFMBmXSV7SqYxkg8nbzXq6dVoC+akmTG0YOzx6zqkoUtn024JEjBQfIFxs5PAIjPJkw== X-Received: by 2002:ad4:45ec:: with SMTP id q12mr34740939qvu.157.1588182082544; Wed, 29 Apr 2020 10:41:22 -0700 (PDT) Received: from rani.riverdale.lan ([2001:470:1f07:5f3::b55f]) by smtp.gmail.com with ESMTPSA id z1sm14766448qkz.3.2020.04.29.10.41.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2020 10:41:22 -0700 (PDT) From: Arvind Sankar To: Ard Biesheuvel Cc: linux-efi@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 01/10] efi/x86: Use correct size for boot_params Date: Wed, 29 Apr 2020 13:41:10 -0400 Message-Id: <20200429174120.1497212-2-nivedita@alum.mit.edu> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200429174120.1497212-1-nivedita@alum.mit.edu> References: <20200429174120.1497212-1-nivedita@alum.mit.edu> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-efi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org struct boot_params is only 4096 bytes, not 16384. Fix this by using sizeof(struct boot_params) instead of hardcoding the incorrect value. Signed-off-by: Arvind Sankar --- drivers/firmware/efi/libstub/x86-stub.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/firmware/efi/libstub/x86-stub.c b/drivers/firmware/efi/libstub/x86-stub.c index 597793fe8d22..d4bafd7f6f9f 100644 --- a/drivers/firmware/efi/libstub/x86-stub.c +++ b/drivers/firmware/efi/libstub/x86-stub.c @@ -379,13 +379,14 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle, image_base = efi_table_attr(image, image_base); image_offset = (void *)startup_32 - image_base; - status = efi_allocate_pages(0x4000, (unsigned long *)&boot_params, ULONG_MAX); + status = efi_allocate_pages(sizeof(struct boot_params), + (unsigned long *)&boot_params, ULONG_MAX); if (status != EFI_SUCCESS) { efi_printk("Failed to allocate lowmem for boot params\n"); efi_exit(handle, status); } - memset(boot_params, 0x0, 0x4000); + memset(boot_params, 0x0, sizeof(struct boot_params)); hdr = &boot_params->hdr; @@ -439,7 +440,7 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle, fail2: efi_free(options_size, (unsigned long)cmdline_ptr); fail: - efi_free(0x4000, (unsigned long)boot_params); + efi_free(sizeof(struct boot_params), (unsigned long)boot_params); efi_exit(handle, status); } -- 2.26.2