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 e579b3633a8428a5a85909ddc23d903f26b6b48d..e63c48a1602fd2101566adf051472f4b1a196c42 100644 (file)
--- 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);