4.19-stable review patch. If anyone has any objections, please let me know.
------------------ From: Sanskriti Sharma <[email protected]> [ Upstream commit 9c8a182e5a73e01afd11742a2ab887bf338fdafd ] parse_ftrace_printk() tokenizes and parses a line, calling strdup() each iteration. Add code to free this temporary format string duplicate. Fixes the following coverity complaints: Error: RESOURCE_LEAK (CWE-772): tools/perf/util/trace-event-parse.c:158: overwrite_var: Overwriting "printk" in "printk = strdup(fmt + 1)" leaks the storage that "printk" points to. tools/perf/util/trace-event-parse.c:162: leaked_storage: Variable "printk" going out of scope leaks the storage it points to. Signed-off-by: Sanskriti Sharma <[email protected]> Reviewed-by: Jiri Olsa <[email protected]> Cc: Joe Lawrence <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Sasha Levin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- tools/perf/util/trace-event-parse.c | 1 + 1 file changed, 1 insertion(+) --- a/tools/perf/util/trace-event-parse.c +++ b/tools/perf/util/trace-event-parse.c @@ -158,6 +158,7 @@ void parse_ftrace_printk(struct tep_hand printk = strdup(fmt+1); line = strtok_r(NULL, "\n", &next); tep_register_print_string(pevent, printk, addr); + free(printk); } }
