From nobody Thu Oct 2 02:12:38 2025 Received: from mail-pf1-f170.google.com (mail-pf1-f170.google.com [209.85.210.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CE42C3019A9 for ; Wed, 24 Sep 2025 11:51:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.170 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758714716; cv=none; b=ShvEk0rocM7m05rdA9ugfCi6zMMb5XCn+4ufY3EJecuEbDsyqehom97Qh+c2W3bUVpPUFx47oD8/G8VwfxpljfxrzbpXDXtP1C+L1rpDs0kNUVep+edl5//tpe+QeiVCnazLKt30WP5SR1+ny1qxbON1epYellXOz4Qlf0xouZg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758714716; c=relaxed/simple; bh=jXVtZ6lSnaquGQDEy0MV0UKEBAEZnx3Lv2rnYbpvrA0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dis3ni6mHWccbxnkearEWa2G52FHmZlCDVHEUda7YKjUW1AAV+AtNqvtilL4yOL/ATdjRCvKKHadLU6J9C9PaFZltDVe1ds2sKH+JoY02/WlKHiXdaoj16rHOiMC4Ip6esCsH1mUb5aNS/v/jhdp6Ux5cliu7UZPNjIPL0dUKEc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=DfHfbDgL; arc=none smtp.client-ip=209.85.210.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="DfHfbDgL" Received: by mail-pf1-f170.google.com with SMTP id d2e1a72fcca58-77f68fae1a8so967679b3a.1 for ; Wed, 24 Sep 2025 04:51:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1758714709; x=1759319509; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=R1KSy0afhoo56zSKFToL0Rdd0rZ5LRpSk38GpQKE8pg=; b=DfHfbDgLV4ZBha5t6gQyH6Z6HtoJbUC/SlhISEprByp358kRbswsG4Jm1wEKBNIpuG gTUVsR1qbFjCI/MV3v1Lxvt8DV8/iQOPv9LkjR6U98qIcb8NsaHOexQSm+URUf1PQLR+ M/ljuYjCx2Ad31uiJ33RY2LvxoU/1qiLpXCj13EBgtNzCD1l0/M9dzwH2ZdumIYLrdzX hgw3wKbHrBWYBWZgY4CXJR4+9dHAU9GmLNAm40/8jkq76jsG4RbcGTzDsa0ndzy0e/ST /ekQ4LFWq+cD/APMNuS7Ry2xup4l4TSmdq7s8V+bwORSfEPKF78xACfrzpaCINDvQrSA BrCw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758714709; x=1759319509; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=R1KSy0afhoo56zSKFToL0Rdd0rZ5LRpSk38GpQKE8pg=; b=gnxY0OT1v00ABXEGQ/aD668H7mZtuRHL9TuLBPvkwzx1qeoksYCVlLY3uW1UB1+1Hx bOM/vZElMARo3onN0SqE5d3nxQlGwy4xth2qQfaJDI9IOdwjEznAt94m+UoXojKsyfbq e752NYeQL8qGZuSlgIgYDQY+MW5f3FjLBmxrl4M0e17PtfU9Za/yu1/pweUq7rW9+zzd 7Z1K0Ipwp+j/Y+5+OXb+j2QR/Q6AXwCLz30n14jOM1RozCJyAn0AkKeydjr5N2VwadYZ +xqQthjb5NpgNQQHVc3/67lfL/TVftXI3Cex1ihTq+KfJUP6Jow5T01AYDBedHn3MDsb P35Q== X-Forwarded-Encrypted: i=1; AJvYcCUcK4D1ex3vEtOeImoo1FOupvjOX4F5Anynu3DmCgJmgCxode2iONxaKIkSrO6s0JJ2VRkP26E3MHeUck8=@vger.kernel.org X-Gm-Message-State: AOJu0YwSsVbmiV9dIwQiYoHqhSoMrQkAUpWHW89I1IvtgHYfgdqdco9Y XTw6F5dzQkXpdwpcwnte7qz7K5VAZM7mzQdI0akEcxBeHLUti3dxXkd7 X-Gm-Gg: ASbGnctIr/EmFgDSxBnN+fAXmWJSVEmij3R0QLhIAMeMBORhiQzvER1alx5hmPgVvMa lPRr+i0L+25wcGz0hvdLoPGEUKT+PURKlKzlM/L/FqoWE777tlayg2yMkZU1R/PJPioIES0VTWZ wetFS6T9pvlnuuIe1E/d1HjPJPwx57DOgMUFMwYLxZEsa8J+ALf7zorajEY7A++HV1zpVNgvHke /eyC1C/iEihEx1sRhHDzjpXRnpwJMoxiNy3LPjbo+dBj3CHd5ZIxz6+Y3IAw78m9SsJLqLyLiCT MMjqHPc1vUYisPNGmmZ7LaUcGK3M7WW3tqvhQNSw1mMDEsEYBdrT3i59394NBnTM75GHVLdlPkC yuEg0UKOTUpPjgPZ/UQZYQfU7LdiyXfuIDEuv X-Google-Smtp-Source: AGHT+IFQ5u0/9s5WpxjOT+F0EeKSWL8MVQatB4w+7WUjpnJ2Ax15auMJ/gX34AgvPJn/yfLcWN7oSA== X-Received: by 2002:a05:6a21:3286:b0:2df:8271:f08d with SMTP id adf61e73a8af0-2df8271fb8dmr2764157637.2.1758714708983; Wed, 24 Sep 2025 04:51:48 -0700 (PDT) Received: from localhost ([23.142.224.65]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-77f5f9a45dfsm3248137b3a.7.2025.09.24.04.51.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Sep 2025 04:51:48 -0700 (PDT) From: Jinchao Wang To: Andrew Morton , Masami Hiramatsu , Peter Zijlstra , Mike Rapoport , Alexander Potapenko , Randy Dunlap , 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 Cc: Jinchao Wang Subject: [PATCH v5 04/23] mm/ksw: add build system support Date: Wed, 24 Sep 2025 19:50:47 +0800 Message-ID: <20250924115124.194940-5-wangjinchao600@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250924115124.194940-1-wangjinchao600@gmail.com> References: <20250924115124.194940-1-wangjinchao600@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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. =20 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. + + If unsure, say N. diff --git a/mm/Makefile b/mm/Makefile index ef54aa615d9d..665c9f2bf987 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -92,6 +92,7 @@ obj-$(CONFIG_PAGE_POISONING) +=3D page_poison.o obj-$(CONFIG_KASAN) +=3D kasan/ obj-$(CONFIG_KFENCE) +=3D kfence/ obj-$(CONFIG_KMSAN) +=3D kmsan/ +obj-$(CONFIG_KSTACK_WATCH) +=3D kstackwatch/ obj-$(CONFIG_FAILSLAB) +=3D failslab.o obj-$(CONFIG_FAIL_PAGE_ALLOC) +=3D fail_page_alloc.o obj-$(CONFIG_MEMTEST) +=3D memtest.o diff --git a/mm/kstackwatch/Makefile b/mm/kstackwatch/Makefile new file mode 100644 index 000000000000..84a46cb9a766 --- /dev/null +++ b/mm/kstackwatch/Makefile @@ -0,0 +1,2 @@ +obj-$(CONFIG_KSTACK_WATCH) +=3D kstackwatch.o +kstackwatch-y :=3D kernel.o stack.o watch.o diff --git a/mm/kstackwatch/kernel.c b/mm/kstackwatch/kernel.c new file mode 100644 index 000000000000..78f1d019225f --- /dev/null +++ b/mm/kstackwatch/kernel.c @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: GPL-2.0 +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include + +static int __init kstackwatch_init(void) +{ + pr_info("module loaded\n"); + return 0; +} + +static void __exit kstackwatch_exit(void) +{ + pr_info("module unloaded\n"); +} + +module_init(kstackwatch_init); +module_exit(kstackwatch_exit); + +MODULE_AUTHOR("Jinchao Wang"); +MODULE_DESCRIPTION("Kernel Stack Watch"); +MODULE_LICENSE("GPL"); + diff --git a/mm/kstackwatch/kstackwatch.h b/mm/kstackwatch/kstackwatch.h new file mode 100644 index 000000000000..0273ef478a26 --- /dev/null +++ b/mm/kstackwatch/kstackwatch.h @@ -0,0 +1,5 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _KSTACKWATCH_H +#define _KSTACKWATCH_H + +#endif /* _KSTACKWATCH_H */ diff --git a/mm/kstackwatch/stack.c b/mm/kstackwatch/stack.c new file mode 100644 index 000000000000..cec594032515 --- /dev/null +++ b/mm/kstackwatch/stack.c @@ -0,0 +1 @@ +// SPDX-License-Identifier: GPL-2.0 diff --git a/mm/kstackwatch/watch.c b/mm/kstackwatch/watch.c new file mode 100644 index 000000000000..cec594032515 --- /dev/null +++ b/mm/kstackwatch/watch.c @@ -0,0 +1 @@ +// SPDX-License-Identifier: GPL-2.0 --=20 2.43.0