Pull 9p updates from Dominique Martinet:
"Two small fixes to properly cleanup the 9p transports list if
virtio/xen module initialization fail.
9p might otherwise try to access memory from a module that failed to
register got freed"
* tag '9p-for-5.3' of git://github.com/martinetd/linux:
9p/xen: Add cleanup path in p9_trans_xen_init
9p/virtio: Add cleanup path in p9_virtio_init
/* The standard init function */
static int __init p9_virtio_init(void)
{
+ int rc;
+
INIT_LIST_HEAD(&virtio_chan_list);
v9fs_register_trans(&p9_virtio_trans);
- return register_virtio_driver(&p9_virtio_drv);
+ rc = register_virtio_driver(&p9_virtio_drv);
+ if (rc)
+ v9fs_unregister_trans(&p9_virtio_trans);
+
+ return rc;
}
static void __exit p9_virtio_cleanup(void)
static int p9_trans_xen_init(void)
{
+ int rc;
+
if (!xen_domain())
return -ENODEV;
pr_info("Initialising Xen transport for 9pfs\n");
v9fs_register_trans(&p9_xen_trans);
- return xenbus_register_frontend(&xen_9pfs_front_driver);
+ rc = xenbus_register_frontend(&xen_9pfs_front_driver);
+ if (rc)
+ v9fs_unregister_trans(&p9_xen_trans);
+
+ return rc;
}
module_init(p9_trans_xen_init);