linux-kernel - [PATCH 12/26] kernel/configs: Register dynamic information into meminspect

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Message-ID: <20251119154427.1033475-13-eugen.hristev@linaro.org>
Date: Wed, 19 Nov 2025 17:44:13 +0200
From: Eugen Hristev <eugen.hristev@...aro.org>
To: linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	tglx@...utronix.de,
	andersson@...nel.org,
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	mhocko@...e.com
Cc: tudor.ambarus@...aro.org,
	mukesh.ojha@....qualcomm.com,
	linux-arm-kernel@...ts.infradead.org,
	linux-hardening@...r.kernel.org,
	jonechou@...gle.com,
	rostedt@...dmis.org,
	linux-doc@...r.kernel.org,
	devicetree@...r.kernel.org,
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	linux-arch@...r.kernel.org,
	tony.luck@...el.com,
	kees@...nel.org,
	Eugen Hristev <eugen.hristev@...aro.org>
Subject: [PATCH 12/26] kernel/configs: Register dynamic information into meminspect

Register kernel_config_data information into inspection table.
Debugging tools look for the start and end markers, so we need to capture
those as well into the region.

Signed-off-by: Eugen Hristev <eugen.hristev@...aro.org>
---
 kernel/configs.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/kernel/configs.c b/kernel/configs.c
index a28c79c5f713..139ecc74bcee 100644
--- a/kernel/configs.c
+++ b/kernel/configs.c
@@ -15,6 +15,7 @@
 #include <linux/seq_file.h>
 #include <linux/init.h>
 #include <linux/uaccess.h>
+#include <linux/meminspect.h>
 
 /*
  * "IKCFG_ST" and "IKCFG_ED" are used to extract the config data from
@@ -64,6 +65,11 @@ static int __init ikconfig_init(void)
 
 	proc_set_size(entry, &kernel_config_data_end - &kernel_config_data);
 
+	/* Register 8 bytes before and after, to catch the marker too */
+	meminspect_lock_register_id_va(MEMINSPECT_ID_CONFIG,
+			     (void *)&kernel_config_data - 8,
+			     &kernel_config_data_end - &kernel_config_data + 16);
+
 	return 0;
 }
 
-- 
2.43.0