Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6D6EFC433EF for ; Tue, 30 Nov 2021 22:06:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233551AbhK3WKB (ORCPT ); Tue, 30 Nov 2021 17:10:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49296 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229551AbhK3WJ7 (ORCPT ); Tue, 30 Nov 2021 17:09:59 -0500 Received: from out2.migadu.com (out2.migadu.com [IPv6:2001:41d0:2:aacc::]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 166CFC061574 for ; Tue, 30 Nov 2021 14:06:40 -0800 (PST) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1638309998; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pxjwWPacm+/5s9n0kHhZDBwjPwmcQ9h5CfpbBNedfPY=; b=rTHic+ui+Stjx4CqDFg66QzsnDBnkQOsCWrRN7Tsz8Fy3jS/a8eU8S+lD7CgSkiCeaQwIu +1SzuCblFAmV4wKDGNQqsQyG9DAoXn0tYdsAoBUeBsjKAt/1tAKTArBz73NGE6L+Ps2EwZ w4jbtyd8YIwx4vvHAhZ1EnG2p4gdBUo= From: andrey.konovalov@linux.dev To: Marco Elver , Alexander Potapenko , Vincenzo Frascino , Catalin Marinas , Peter Collingbourne Cc: Andrey Konovalov , Dmitry Vyukov , Andrey Ryabinin , kasan-dev@googlegroups.com, Andrew Morton , linux-mm@kvack.org, Will Deacon , linux-arm-kernel@lists.infradead.org, Evgenii Stepanov , linux-kernel@vger.kernel.org, Andrey Konovalov Subject: [PATCH 14/31] kasan: clean up metadata byte definitions Date: Tue, 30 Nov 2021 23:06:36 +0100 Message-Id: In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Migadu-Auth-User: linux.dev Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andrey Konovalov Most of the metadata byte values are only used for Generic KASAN. Remove KASAN_KMALLOC_FREETRACK definition for !CONFIG_KASAN_GENERIC case, and put it along with other metadata values for the Generic mode under a corresponding ifdef. Signed-off-by: Andrey Konovalov --- mm/kasan/kasan.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index aebd8df86a1f..a50450160638 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -71,15 +71,16 @@ static inline bool kasan_sync_fault_possible(void) #define KASAN_PAGE_REDZONE 0xFE /* redzone for kmalloc_large allocations */ #define KASAN_KMALLOC_REDZONE 0xFC /* redzone inside slub object */ #define KASAN_KMALLOC_FREE 0xFB /* object was freed (kmem_cache_free/kfree) */ -#define KASAN_KMALLOC_FREETRACK 0xFA /* object was freed and has free track set */ #else #define KASAN_FREE_PAGE KASAN_TAG_INVALID #define KASAN_PAGE_REDZONE KASAN_TAG_INVALID #define KASAN_KMALLOC_REDZONE KASAN_TAG_INVALID #define KASAN_KMALLOC_FREE KASAN_TAG_INVALID -#define KASAN_KMALLOC_FREETRACK KASAN_TAG_INVALID #endif +#ifdef CONFIG_KASAN_GENERIC + +#define KASAN_KMALLOC_FREETRACK 0xFA /* object was freed and has free track set */ #define KASAN_GLOBAL_REDZONE 0xF9 /* redzone for global variable */ #define KASAN_VMALLOC_INVALID 0xF8 /* unallocated space in vmapped page */ @@ -110,6 +111,8 @@ static inline bool kasan_sync_fault_possible(void) #define KASAN_ABI_VERSION 1 #endif +#endif /* CONFIG_KASAN_GENERIC */ + /* Metadata layout customization. */ #define META_BYTES_PER_BLOCK 1 #define META_BLOCKS_PER_ROW 16 -- 2.25.1