linux-kernel - [PATCH v6 32/39] s390/ptdump: Add KMSAN page markers

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Message-ID: <20240621002616.40684-33-iii@linux.ibm.com>
Date: Fri, 21 Jun 2024 02:25:06 +0200
From: Ilya Leoshkevich <iii@...ux.ibm.com>
To: Alexander Gordeev <agordeev@...ux.ibm.com>,
        Alexander Potapenko <glider@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Christoph Lameter <cl@...ux.com>, David Rientjes <rientjes@...gle.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>, Marco Elver <elver@...gle.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Pekka Enberg <penberg@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Vasily Gorbik <gor@...ux.ibm.com>, Vlastimil Babka <vbabka@...e.cz>
Cc: Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Hyeonggon Yoo <42.hyeyoo@...il.com>, kasan-dev@...glegroups.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-s390@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
        Mark Rutland <mark.rutland@....com>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Sven Schnelle <svens@...ux.ibm.com>,
        Ilya Leoshkevich <iii@...ux.ibm.com>
Subject: [PATCH v6 32/39] s390/ptdump: Add KMSAN page markers

Add KMSAN vmalloc metadata areas to kernel_page_tables.

Signed-off-by: Ilya Leoshkevich <iii@...ux.ibm.com>
---
 arch/s390/mm/dump_pagetables.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/arch/s390/mm/dump_pagetables.c b/arch/s390/mm/dump_pagetables.c
index ffd07ed7b4af..f51e5d0862a3 100644
--- a/arch/s390/mm/dump_pagetables.c
+++ b/arch/s390/mm/dump_pagetables.c
@@ -36,6 +36,16 @@ enum address_markers_idx {
 	VMEMMAP_END_NR,
 	VMALLOC_NR,
 	VMALLOC_END_NR,
+#ifdef CONFIG_KMSAN
+	KMSAN_VMALLOC_SHADOW_START_NR,
+	KMSAN_VMALLOC_SHADOW_END_NR,
+	KMSAN_VMALLOC_ORIGIN_START_NR,
+	KMSAN_VMALLOC_ORIGIN_END_NR,
+	KMSAN_MODULES_SHADOW_START_NR,
+	KMSAN_MODULES_SHADOW_END_NR,
+	KMSAN_MODULES_ORIGIN_START_NR,
+	KMSAN_MODULES_ORIGIN_END_NR,
+#endif
 	MODULES_NR,
 	MODULES_END_NR,
 	ABS_LOWCORE_NR,
@@ -74,6 +84,16 @@ static struct addr_marker address_markers[] = {
 #ifdef CONFIG_KASAN
 	[KASAN_SHADOW_START_NR]	= {KASAN_SHADOW_START, "Kasan Shadow Start"},
 	[KASAN_SHADOW_END_NR]	= {KASAN_SHADOW_END, "Kasan Shadow End"},
+#endif
+#ifdef CONFIG_KMSAN
+	[KMSAN_VMALLOC_SHADOW_START_NR]	= {0, "Kmsan vmalloc Shadow Start"},
+	[KMSAN_VMALLOC_SHADOW_END_NR]	= {0, "Kmsan vmalloc Shadow End"},
+	[KMSAN_VMALLOC_ORIGIN_START_NR]	= {0, "Kmsan vmalloc Origins Start"},
+	[KMSAN_VMALLOC_ORIGIN_END_NR]	= {0, "Kmsan vmalloc Origins End"},
+	[KMSAN_MODULES_SHADOW_START_NR]	= {0, "Kmsan Modules Shadow Start"},
+	[KMSAN_MODULES_SHADOW_END_NR]	= {0, "Kmsan Modules Shadow End"},
+	[KMSAN_MODULES_ORIGIN_START_NR]	= {0, "Kmsan Modules Origins Start"},
+	[KMSAN_MODULES_ORIGIN_END_NR]	= {0, "Kmsan Modules Origins End"},
 #endif
 	{ -1, NULL }
 };
@@ -306,6 +326,16 @@ static int pt_dump_init(void)
 #ifdef CONFIG_KFENCE
 	address_markers[KFENCE_START_NR].start_address = kfence_start;
 	address_markers[KFENCE_END_NR].start_address = kfence_start + KFENCE_POOL_SIZE;
+#endif
+#ifdef CONFIG_KMSAN
+	address_markers[KMSAN_VMALLOC_SHADOW_START_NR].start_address = KMSAN_VMALLOC_SHADOW_START;
+	address_markers[KMSAN_VMALLOC_SHADOW_END_NR].start_address = KMSAN_VMALLOC_SHADOW_END;
+	address_markers[KMSAN_VMALLOC_ORIGIN_START_NR].start_address = KMSAN_VMALLOC_ORIGIN_START;
+	address_markers[KMSAN_VMALLOC_ORIGIN_END_NR].start_address = KMSAN_VMALLOC_ORIGIN_END;
+	address_markers[KMSAN_MODULES_SHADOW_START_NR].start_address = KMSAN_MODULES_SHADOW_START;
+	address_markers[KMSAN_MODULES_SHADOW_END_NR].start_address = KMSAN_MODULES_SHADOW_END;
+	address_markers[KMSAN_MODULES_ORIGIN_START_NR].start_address = KMSAN_MODULES_ORIGIN_START;
+	address_markers[KMSAN_MODULES_ORIGIN_END_NR].start_address = KMSAN_MODULES_ORIGIN_END;
 #endif
 	sort_address_markers();
 #ifdef CONFIG_PTDUMP_DEBUGFS
-- 
2.45.1