From mboxrd@z Thu Jan 1 00:00:00 1970 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.subspace.kernel.org (Postfix) with ESMTPS id 1F4881A2C11; Wed, 24 Sep 2025 17:06:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758733593; cv=none; b=nd5Utn10XP8GmlDKnwMXV6IX6xYZBQupIey3EvcdVLvHgSsMoXbrHl8LOhRl2BIe93S+n0rjHyc9nYIrU43yofxoq9fpHbx8uU1HHYhT+EL81Vcl0C8eLmG5B9Hx+Kt4UlES7PclPFrKaq4xKDKSC2pv3RKC4NLAI0NluUXdMGg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758733593; c=relaxed/simple; bh=UHknWmUfVJmkxwSKbBmantXcg7nJDEjwNFGWpWAZZfw=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=QeYkqXClOvpqHK7p/vs5mauvrKWwk8nalUFAoR4ieJwsDRrMrlRgZ4Q+E83i/ZlNYCHjQuX1dL7QvhQlktmXxYQz9AaILnKJzpChtPvNF/nrkKvS7V8r2pjb/QEu9ZUnNkug8Rv0loNE0LDG6xKVcSlUV3aOmEWRFnZx+4AwLSo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=yMVBBGhb; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="yMVBBGhb" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:To:Subject:MIME-Version:Date: Message-ID:Sender:Reply-To:Cc:Content-ID:Content-Description; bh=IYQIoIaOKCIxSPFzuBjsQ4uTXQsp3WYZ5kAt8a5vPEc=; b=yMVBBGhbm0CLYR9iFKaFxB3NzJ FXsEMYpXS5BwrQo17beyxJiRF2eVpGI37E9rSScck4hHw7aBHt5YlROsnbqzqNynVBbOpBK+bH4xA d4oSxLXDN+d1N4dURwP2zisz/dR1m1MfYNw52WiMxW4vz4mLOMWOKB0Wa7U7jG3vPDZ/fDAtkynDe /yChEJFGyaVg0aegV7Xclx32TR9w6OXlJSugh0eeEuBAmJUWTbXUouRNbYmBC26Ch6S9bG4KkD/JN 0sJx+0tCnHqSZtp844pJs4qAs3W/+Y2If0aodsX3aSvG4UBodN3W37nDPJ172u5zEg0HNdRMsOaW/ z06hMXNQ==; Received: from [50.53.25.54] (helo=[192.168.254.17]) by bombadil.infradead.org with esmtpsa (Exim 4.98.2 #2 (Red Hat Linux)) id 1v1SwW-00000001yYJ-3ITs; Wed, 24 Sep 2025 17:06:12 +0000 Message-ID: <3504b378-4360-4e55-b28d-74aabd4308d7@infradead.org> Date: Wed, 24 Sep 2025 10:06:10 -0700 Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 04/23] mm/ksw: add build system support To: Jinchao Wang , Andrew Morton , Masami Hiramatsu , Peter Zijlstra , Mike Rapoport , Alexander Potapenko , Jonathan Corbet , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , "Liang, Kan" , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , Kees Cook , Alice Ryhl , Sami Tolvanen , Miguel Ojeda , Masahiro Yamada , Rong Xu , Naveen N Rao , David Kaplan , Andrii Nakryiko , Jinjie Ruan , Nam Cao , workflows@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-mm@kvack.org, llvm@lists.linux.dev, Andrey Ryabinin , Andrey Konovalov , Dmitry Vyukov , Vincenzo Frascino , kasan-dev@googlegroups.com, "David S. Miller" , Mathieu Desnoyers , linux-trace-kernel@vger.kernel.org References: <20250924115124.194940-1-wangjinchao600@gmail.com> <20250924115124.194940-5-wangjinchao600@gmail.com> Content-Language: en-US From: Randy Dunlap In-Reply-To: <20250924115124.194940-5-wangjinchao600@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 9/24/25 4:50 AM, Jinchao Wang wrote: > Add Kconfig and Makefile infrastructure. > > The implementation is located under `mm/kstackwatch/`. > > Signed-off-by: Jinchao Wang > --- > mm/Kconfig.debug | 8 ++++++++ > mm/Makefile | 1 + > mm/kstackwatch/Makefile | 2 ++ > mm/kstackwatch/kernel.c | 23 +++++++++++++++++++++++ > mm/kstackwatch/kstackwatch.h | 5 +++++ > mm/kstackwatch/stack.c | 1 + > mm/kstackwatch/watch.c | 1 + > 7 files changed, 41 insertions(+) > create mode 100644 mm/kstackwatch/Makefile > create mode 100644 mm/kstackwatch/kernel.c > create mode 100644 mm/kstackwatch/kstackwatch.h > create mode 100644 mm/kstackwatch/stack.c > create mode 100644 mm/kstackwatch/watch.c > > diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug > index 32b65073d0cc..89be351c0be5 100644 > --- a/mm/Kconfig.debug > +++ b/mm/Kconfig.debug > @@ -309,3 +309,11 @@ config PER_VMA_LOCK_STATS > overhead in the page fault path. > > If in doubt, say N. > + > +config KSTACK_WATCH > + bool "Kernel Stack Watch" > + depends on HAVE_HW_BREAKPOINT && KPROBES && FPROBE && STACKTRACE > + help > + A lightweight real-time debugging tool to detect stack corrupting. corruption. > + > + If unsure, say N. -- ~Randy