Message ID | 1d97df75955e52727a3dc1c4e33b3b50506fc3fd.1643047180.git.andreyknvl@google.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org> X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8ADD0C433F5 for <linux-arm-kernel@archiver.kernel.org>; Mon, 24 Jan 2022 18:34:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ThUaGmpoegNV27egX5Q17OIHNaOmchM4t4tyjWla9yw=; b=0b/S15VeD9FQuT ZMhsDAiyMS6VoujUq+KCvQcdfX4VxhpheykWxXA8pgL79toWrzZoqycE99CA4IdZ/784hE1kUpsV5 aD4hKG7hpmg6miQobfcjfKX7wetmO8Le5c0vUKl/bLo/2QlF/DUVZ52dNR/JxWi9FhQrU0qUSqtkZ /IS9rKj/B8InXOl6LEbTSHzFesvAWV8X6Odx+LjxeRbJhAwERE6nLXdEAMTRLVne6rLopXrIjSY6G FGDJud+DQbt0k2ZAB4W4DubjtRWIKPyx7dKCWkXuR0MN9i+39qO6KUWL6O6ruknuD0J7J8QKEkZUH 3FvVFq/iinJmvDts6a7Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nC49c-004XNd-DD; Mon, 24 Jan 2022 18:33:24 +0000 Received: from out0.migadu.com ([2001:41d0:2:267::]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nC3gG-004Lp2-2Q for linux-arm-kernel@lists.infradead.org; Mon, 24 Jan 2022 18:03:08 +0000 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=1643047377; 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=lu+d0FvmlGAoYbgcSnAcHnve/JGZrRKgqG6H2fXAm3E=; b=jk1sGMKwhwoZgx3UbKB/QI1h3DEwu01knIbZzdZW+9BQ1CAv9uVk/0kNprUvOZwmzqPWVh oIr5aVYPe4721mJRO4psY0m5/WXFgd80rBHDJYkiFvOTd47C7rev723tpFZDGqzEXSdHgP WZMkZakZustuhHBV37ABcRHukwEYlKU= From: andrey.konovalov@linux.dev To: Andrew Morton <akpm@linux-foundation.org> Cc: Andrey Konovalov <andreyknvl@gmail.com>, Marco Elver <elver@google.com>, Alexander Potapenko <glider@google.com>, Dmitry Vyukov <dvyukov@google.com>, Andrey Ryabinin <ryabinin.a.a@gmail.com>, kasan-dev@googlegroups.com, linux-mm@kvack.org, Vincenzo Frascino <vincenzo.frascino@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Mark Rutland <mark.rutland@arm.com>, linux-arm-kernel@lists.infradead.org, Peter Collingbourne <pcc@google.com>, Evgenii Stepanov <eugenis@google.com>, linux-kernel@vger.kernel.org, Andrey Konovalov <andreyknvl@google.com> Subject: [PATCH v6 05/39] kasan, page_alloc: init memory of skipped pages on free Date: Mon, 24 Jan 2022 19:02:13 +0100 Message-Id: <1d97df75955e52727a3dc1c4e33b3b50506fc3fd.1643047180.git.andreyknvl@google.com> In-Reply-To: <cover.1643047180.git.andreyknvl@google.com> References: <cover.1643047180.git.andreyknvl@google.com> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-Migadu-Auth-User: linux.dev X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220124_100304_302352_F5C7BEFC X-CRM114-Status: GOOD ( 14.76 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: <linux-arm-kernel.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/> List-Post: <mailto:linux-arm-kernel@lists.infradead.org> List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org |
Series |
kasan, vmalloc, arm64: add vmalloc tagging support for SW/HW_TAGS
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expand
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diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 60bc838a4d85..f994fd68e3b1 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1375,11 +1375,16 @@ static __always_inline bool free_pages_prepare(struct page *page, * With hardware tag-based KASAN, memory tags must be set before the * page becomes unavailable via debug_pagealloc or arch_free_page. */ - if (init && !kasan_has_integrated_init()) - kernel_init_free_pages(page, 1 << order); - if (!skip_kasan_poison) + if (!skip_kasan_poison) { kasan_poison_pages(page, order, init); + /* Memory is already initialized if KASAN did it internally. */ + if (kasan_has_integrated_init()) + init = false; + } + if (init) + kernel_init_free_pages(page, 1 << order); + /* * arch_free_page() can make the page's contents inaccessible. s390 * does this. So nothing which can access the page's contents should