From: ikaros <void0red@gmail.com>
Date: Wed, 27 May 2026 18:01:21 +0000 (+0200)
Subject: ACPICA: Prevent adding invalid references
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6e8c55e13a5e3a9f38921d62924f18ceba3330eb;p=thirdparty%2Fkernel%2Flinux.git

ACPICA: Prevent adding invalid references

Prevent adding references for local, argument, and debug objects
in acpi_ut_copy_simple_object().

Link: https://github.com/acpica/acpica/commit/f576898d7814
Signed-off-by: ikaros <void0red@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/4511989.ejJDZkT8p0@rafael.j.wysocki
---

diff --git a/drivers/acpi/acpica/utcopy.c b/drivers/acpi/acpica/utcopy.c
index 80458e70ac2bf..9ecf5c3f49ba6 100644
--- a/drivers/acpi/acpica/utcopy.c
+++ b/drivers/acpi/acpica/utcopy.c
@@ -731,7 +731,15 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc,
 			break;
 		}
 
-		acpi_ut_add_reference(source_desc->reference.object);
+		/*
+		 * Local/Arg/Debug references do not have a valid Object pointer
+		 * that can be referenced
+		 */
+		if ((source_desc->reference.class != ACPI_REFCLASS_LOCAL) &&
+		    (source_desc->reference.class != ACPI_REFCLASS_ARG) &&
+		    (source_desc->reference.class != ACPI_REFCLASS_DEBUG)) {
+			acpi_ut_add_reference(source_desc->reference.object);
+		}
 		break;
 
 	case ACPI_TYPE_REGION: