4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sanskriti Sharma <sansharm@xxxxxxxxxx> [ 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 <sansharm@xxxxxxxxxx> Reviewed-by: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: Joe Lawrence <joe.lawrence@xxxxxxxxxx> Link: http://lkml.kernel.org/r/1538490554-8161-4-git-send-email-sansharm@xxxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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); } }
