linux-kernel - [PATCH 5.4 17/78] ACPICA: Clean up context mutex during object deletion

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Message-Id: <20210608175935.852114464@linuxfoundation.org>
Date:   Tue,  8 Jun 2021 20:26:46 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, John Garry <john.garry@...wei.com>,
        Xiang Chen <chenxiang66@...ilicon.com>,
        Erik Kaneda <erik.kaneda@...el.com>,
        Bob Moore <robert.moore@...el.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 17/78] ACPICA: Clean up context mutex during object deletion

From: Erik Kaneda <erik.kaneda@...el.com>

[ Upstream commit e4dfe108371214500ee10c2cf19268f53acaa803 ]

ACPICA commit bc43c878fd4ff27ba75b1d111b97ee90d4a82707

Fixes: c27f3d011b08 ("Fix race in GenericSerialBus (I2C) and GPIO OpRegion parameter handling")
Link: https://github.com/acpica/acpica/commit/bc43c878
Reported-by: John Garry <john.garry@...wei.com>
Reported-by: Xiang Chen <chenxiang66@...ilicon.com>
Tested-by: Xiang Chen <chenxiang66@...ilicon.com>
Signed-off-by: Erik Kaneda <erik.kaneda@...el.com>
Signed-off-by: Bob Moore <robert.moore@...el.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/acpi/acpica/utdelete.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c
index 4c0d4e434196..72d2c0b65633 100644
--- a/drivers/acpi/acpica/utdelete.c
+++ b/drivers/acpi/acpica/utdelete.c
@@ -285,6 +285,14 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
 		}
 		break;
 
+	case ACPI_TYPE_LOCAL_ADDRESS_HANDLER:
+
+		ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
+				  "***** Address handler %p\n", object));
+
+		acpi_os_delete_mutex(object->address_space.context_mutex);
+		break;
+
 	default:
 
 		break;
-- 
2.30.2