From ac43c9122e4287bbdbe91e980fc2528acb72cc1e Mon Sep 17 00:00:00 2001 From: Yaxiong Tian Date: Wed, 22 Nov 2023 16:02:43 +0800 Subject: thunderbolt: Fix memory leak in margining_port_remove() The dentry returned by debugfs_lookup() needs to be released by calling dput() which is missing in margining_port_remove(). Fix this by calling debugfs_lookup_and_remove() that combines both and avoids the memory leak. Fixes: d0f1e0c2a699 ("thunderbolt: Add support for receiver lane margining") Cc: stable@vger.kernel.org Signed-off-by: Yaxiong Tian Signed-off-by: Mika Westerberg --- drivers/thunderbolt/debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/thunderbolt/debugfs.c') diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c index c9ddd49138d8..e324cd899719 100644 --- a/drivers/thunderbolt/debugfs.c +++ b/drivers/thunderbolt/debugfs.c @@ -959,7 +959,7 @@ static void margining_port_remove(struct tb_port *port) snprintf(dir_name, sizeof(dir_name), "port%d", port->port); parent = debugfs_lookup(dir_name, port->sw->debugfs_dir); if (parent) - debugfs_remove_recursive(debugfs_lookup("margining", parent)); + debugfs_lookup_and_remove("margining", parent); kfree(port->usb4->margining); port->usb4->margining = NULL; -- cgit v1.2.3