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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 91A57C433EF for ; Tue, 19 Oct 2021 12:04:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6F7CB6135E for ; Tue, 19 Oct 2021 12:04:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235425AbhJSMGi (ORCPT ); Tue, 19 Oct 2021 08:06:38 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:58708 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S230129AbhJSMGe (ORCPT ); Tue, 19 Oct 2021 08:06:34 -0400 X-UUID: ad45a0871a10492ca17d80620b9e8e06-20211019 X-UUID: ad45a0871a10492ca17d80620b9e8e06-20211019 Received: from mtkmbs10n2.mediatek.inc [(172.21.101.183)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 428895041; Tue, 19 Oct 2021 20:04:18 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Tue, 19 Oct 2021 20:04:17 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 19 Oct 2021 20:04:17 +0800 From: Kuan-Ying Lee To: Andrey Ryabinin , Alexander Potapenko , Andrey Konovalov , Dmitry Vyukov , Catalin Marinas , Will Deacon , Andrew Morton , "Matthias Brugger" CC: , , , , , , , , Kuan-Ying Lee Subject: [PATCH] kasan: add kasan mode messages when kasan init Date: Tue, 19 Oct 2021 20:04:13 +0800 Message-ID: <20211019120413.20807-1-Kuan-Ying.Lee@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There are multiple kasan modes. It make sense that we add some messages to know which kasan mode is when booting up. see [1]. Link: https://bugzilla.kernel.org/show_bug.cgi?id=212195 [1] Signed-off-by: Kuan-Ying Lee --- arch/arm64/mm/kasan_init.c | 2 +- mm/kasan/hw_tags.c | 4 +++- mm/kasan/sw_tags.c | 2 +- 3 files changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/arm64/mm/kasan_init.c b/arch/arm64/mm/kasan_init.c index 61b52a92b8b6..b4e78beac285 100644 --- a/arch/arm64/mm/kasan_init.c +++ b/arch/arm64/mm/kasan_init.c @@ -293,7 +293,7 @@ void __init kasan_init(void) kasan_init_depth(); #if defined(CONFIG_KASAN_GENERIC) /* CONFIG_KASAN_SW_TAGS also requires kasan_init_sw_tags(). */ - pr_info("KernelAddressSanitizer initialized\n"); + pr_info("KernelAddressSanitizer initialized (generic)\n"); #endif } diff --git a/mm/kasan/hw_tags.c b/mm/kasan/hw_tags.c index 05d1e9460e2e..3e28ecbe1d8f 100644 --- a/mm/kasan/hw_tags.c +++ b/mm/kasan/hw_tags.c @@ -168,7 +168,9 @@ void __init kasan_init_hw_tags(void) break; } - pr_info("KernelAddressSanitizer initialized\n"); + pr_info("KernelAddressSanitizer initialized (hw-tags, mode=%s, stacktrace=%s)\n", + kasan_flag_async ? "async" : "sync", + kasan_stack_collection_enabled() ? "on" : "off"); } void kasan_alloc_pages(struct page *page, unsigned int order, gfp_t flags) diff --git a/mm/kasan/sw_tags.c b/mm/kasan/sw_tags.c index bd3f540feb47..77f13f391b57 100644 --- a/mm/kasan/sw_tags.c +++ b/mm/kasan/sw_tags.c @@ -42,7 +42,7 @@ void __init kasan_init_sw_tags(void) for_each_possible_cpu(cpu) per_cpu(prng_state, cpu) = (u32)get_cycles(); - pr_info("KernelAddressSanitizer initialized\n"); + pr_info("KernelAddressSanitizer initialized (sw-tags)\n"); } /* -- 2.18.0