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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B209CFA373D for ; Mon, 24 Oct 2022 23:00:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229970AbiJXXA5 (ORCPT ); Mon, 24 Oct 2022 19:00:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35286 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230516AbiJXXAU (ORCPT ); Mon, 24 Oct 2022 19:00:20 -0400 Received: from mail-lj1-x249.google.com (mail-lj1-x249.google.com [IPv6:2a00:1450:4864:20::249]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2A9262D7814 for ; Mon, 24 Oct 2022 14:22:36 -0700 (PDT) Received: by mail-lj1-x249.google.com with SMTP id e9-20020a2ea549000000b0026fd9ba87acso4523196ljn.1 for ; Mon, 24 Oct 2022 14:22:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=G4yBv7Ojnp7UF/vJeQGCUBcD6F1oQa7UXx9ZrIQaMAU=; b=aSgkiacZ+5LH66/OSoz3MSDqz3zMIfvjCb/vyfftyLM0xQDT8v/cV4qgWN9uIWbM2D 5OZHLV9CdDaSYabYM5oDhFl/9ZFZxBB7UVaE+TCMSdHJ4OzpgUiYTbbaREJDJ5M7BdKw 7Yp611r8+sMWV+GwAvNDb5hW2BH9LuS76Frg8V4l+RxJ4pp10FD3oo1s5NeIbhGUhz0w 0i1mgmg0nYSCbbb5eW6qpKn9lWSlUKvjLWMU81zY+MVDWxf5KApWMkH3yS1m1A1Ci/5R 956P5mfY7HvBAFj+8gGanEIbLdPqM2iOq+oUYtxU3AimbVdcembaQ3RioMtPFtX9O6iC 4i9Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=G4yBv7Ojnp7UF/vJeQGCUBcD6F1oQa7UXx9ZrIQaMAU=; b=trZdlrhrSvzQHvlSJAcvPL8nIE708iKGjGX3qHy8aDxzTVrhD6mT59RDGOL7AGZge5 VBiU31z/YxZzLAm5o9qnqOmXxP6C2tZ617Kr3c7wbNNeozOxDtvVbtMP+S8EE7G9Uk8W BNBlgZ9MraU3fsIHOF441ObJTyJcECA1a1HGZtZG8z57PJaoTGZCcz/nZ70Ptadn9qHY UHJRBfF+urvV/bNfs0l1UOPNMoCNSwbUdsq1nxJx+swFBxYkb+HNbUFQzkfnK+AIrzZ/ HXLvzN9krxWnFjvED6b7gPfIu+f8eEGBAf+62C5FgJDG3Pfb2faBf3zixV+FrDBLcNCq rvlA== X-Gm-Message-State: ACrzQf3K8Ogkw0AH0zIbXCdFKNF7Ll7GOChrt5WeMd4z/1rBn9eu4C1O qXZK4I92pCitFN3j+vNZRojB/M5GCcc= X-Google-Smtp-Source: AMsMyM48tMgyNJTcQaeP49oPDEv9IHgkDLnPXKM/jKBNnXEO6qCwgCXK+Fopa0pPG4zOuEJQI1VErzmH0jI= X-Received: from glider.muc.corp.google.com ([2a00:79e0:9c:201:8695:7c88:66ed:f9d1]) (user=glider job=sendgmr) by 2002:a05:6512:104c:b0:4a2:6b99:c8f3 with SMTP id c12-20020a056512104c00b004a26b99c8f3mr13590896lfb.519.1666646508884; Mon, 24 Oct 2022 14:21:48 -0700 (PDT) Date: Mon, 24 Oct 2022 23:21:40 +0200 Mime-Version: 1.0 X-Mailer: git-send-email 2.38.0.135.g90850a2211-goog Message-ID: <20221024212144.2852069-1-glider@google.com> Subject: [PATCH 1/5] mm: kmsan: export kmsan_copy_page_meta() From: Alexander Potapenko To: glider@google.com Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andrew Morton Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Certain modules call copy_user_highpage(), which calls kmsan_copy_page_meta() under KMSAN, so we need to export the latter. Cc: Andrew Morton Fixes: b073d7f8aee4 ("mm: kmsan: maintain KMSAN metadata for page operations") Link: https://github.com/google/kmsan/issues/89 Signed-off-by: Alexander Potapenko --- mm/kmsan/shadow.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/kmsan/shadow.c b/mm/kmsan/shadow.c index 21e3e196ec3cf..a787c04e9583c 100644 --- a/mm/kmsan/shadow.c +++ b/mm/kmsan/shadow.c @@ -167,6 +167,7 @@ void kmsan_copy_page_meta(struct page *dst, struct page *src) __memcpy(origin_ptr_for(dst), origin_ptr_for(src), PAGE_SIZE); kmsan_leave_runtime(); } +EXPORT_SYMBOL(kmsan_copy_page_meta); void kmsan_alloc_page(struct page *page, unsigned int order, gfp_t flags) { -- 2.38.0.135.g90850a2211-goog