linux-hardening - [RFC][PATCH v2 14/29] mm/page_alloc: Annotate static information into Kmemdump

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Message-ID: <20250724135512.518487-15-eugen.hristev@linaro.org>
Date: Thu, 24 Jul 2025 16:54:57 +0300
From: Eugen Hristev <eugen.hristev@...aro.org>
To: linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	linux-arch@...r.kernel.org,
	linux-mm@...ck.org,
	tglx@...utronix.de,
	andersson@...nel.org,
	pmladek@...e.com
Cc: linux-arm-kernel@...ts.infradead.org,
	linux-hardening@...r.kernel.org,
	eugen.hristev@...aro.org,
	corbet@....net,
	mojha@....qualcomm.com,
	rostedt@...dmis.org,
	jonechou@...gle.com,
	tudor.ambarus@...aro.org
Subject: [RFC][PATCH v2 14/29] mm/page_alloc: Annotate static information into Kmemdump

Annotate vital static information into kmemdump:
 - node_states

Information on these variables is stored into dedicated kmemdump section.

Signed-off-by: Eugen Hristev <eugen.hristev@...aro.org>
---
 mm/page_alloc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index fa09154a799c..5f0015e27a30 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -55,6 +55,7 @@
 #include <linux/delayacct.h>
 #include <linux/cacheinfo.h>
 #include <linux/pgalloc_tag.h>
+#include <linux/kmemdump.h>
 #include <asm/div64.h>
 #include "internal.h"
 #include "shuffle.h"
@@ -207,6 +208,7 @@ nodemask_t node_states[NR_NODE_STATES] __read_mostly = {
 #endif	/* NUMA */
 };
 EXPORT_SYMBOL(node_states);
+KMEMDUMP_VAR_CORE(node_states, sizeof(node_states));
 
 gfp_t gfp_allowed_mask __read_mostly = GFP_BOOT_MASK;
 
-- 
2.43.0