kernel/trace/fgraph.c:411: warning: No description found for return value of 'fgraph_get_task_var'
kernel/trace/fgraph.c:888: warning: No description found for return value of 'ftrace_graph_get_ret_stack'
kernel/trace/fgraph.c:910: warning: No description found for return value of 'ftrace_graph_top_ret_addr'
kernel/trace/fgraph.c:947: warning: No description found for return value of 'ftrace_graph_ret_addr'
kernel/trace/fgraph.c:411: warning: No description found for return value of 'fgraph_get_task_var'
kernel/trace/fgraph.c:894: warning: No description found for return value of 'ftrace_graph_get_ret_stack'
kernel/trace/fgraph.c:916: warning: No description found for return value of 'ftrace_graph_top_ret_addr'
kernel/trace/fgraph.c:953: warning: No description found for return value of 'ftrace_graph_ret_addr'