From: Johan Hovold <johan+linaro@kernel.org>
Date: Mon, 6 Mar 2023 07:56:29 +0000 (+0100)
Subject: interconnect: fix mem leak when freeing nodes
X-Git-Tag: baikal/mips/sdk5.8.2~120
X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=64a5263cfae112267ff0477a9dd01cce78efbbbf;p=kernel.git

interconnect: fix mem leak when freeing nodes

commit a5904f415e1af72fa8fe6665aa4f554dc2099a95 upstream.

The node link array is allocated when adding links to a node but is not
deallocated when nodes are destroyed.

Fixes: 011f637d6b07 ("interconnect: Add generic on-chip interconnect API")
Cc: stable@vger.kernel.org      # 5.1
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Tested-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # i.MX8MP MSC SM2-MB-EP1 Board
Link: https://lore.kernel.org/r/20230306075651.2449-2-johan+linaro@kernel.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c
index e579b3633a842..e63c48a1602fd 100644
--- a/drivers/interconnect/core.c
+++ b/drivers/interconnect/core.c
@@ -612,6 +612,10 @@ void icc_node_destroy(int id)
 
 	mutex_unlock(&icc_lock);
 
+	if (!node)
+		return;
+
+	kfree(node->links);
 	kfree(node);
 }
 EXPORT_SYMBOL_GPL(icc_node_destroy);