The patch below does not apply to the 5.4-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 9a2e849fb6de471b82d19989a7944d3b7671793c Mon Sep 17 00:00:00 2001
From: Hanjun Guo <guohanjun@xxxxxxxxxx>
Date: Fri, 18 Sep 2020 17:13:28 +0800
Subject: [PATCH] ACPI: configfs: Add missing config_item_put() to fix refcount
leak
config_item_put() should be called in the drop_item callback, to
decrement refcount for the config item.
Fixes: 772bf1e2878ec ("ACPI: configfs: Unload SSDT on configfs entry removal")
Signed-off-by: Hanjun Guo <guohanjun@xxxxxxxxxx>
[ rjw: Subject edit ]
Cc: 4.13+ <stable@xxxxxxxxxxxxxxx> # 4.13+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
diff --git a/drivers/acpi/acpi_configfs.c b/drivers/acpi/acpi_configfs.c
index 88c8af455ea3..cf91f49101ea 100644
--- a/drivers/acpi/acpi_configfs.c
+++ b/drivers/acpi/acpi_configfs.c
@@ -228,6 +228,7 @@ static void acpi_table_drop_item(struct config_group *group,
ACPI_INFO(("Host-directed Dynamic ACPI Table Unload"));
acpi_unload_table(table->index);
+ config_item_put(cfg);
}
static struct configfs_group_operations acpi_table_group_ops = {
