if (err == 0 && intval >= ZPL_VERSION_USERSPACE) {
zfs_cmd_t *zc;
- zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP);
+ zc = kmem_zalloc(sizeof (zfs_cmd_t),
+ KM_SLEEP | KM_NODEBUG);
(void) strcpy(zc->zc_name, dsname);
(void) zfs_ioc_userspace_upgrade(zc);
kmem_free(zc, sizeof (zfs_cmd_t));