4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sanskriti Sharma <sansharm@xxxxxxxxxx> [ Upstream commit 1e44224fb0528b4c0cc176bde2bb31e9127eb14b ] For each system in a given pevent, read_event_files() reads in a temporary 'sys' string. Be sure to free this string before moving onto to the next system and/or leaving read_event_files(). Fixes the following coverity complaints: Error: RESOURCE_LEAK (CWE-772): tools/perf/util/trace-event-read.c:343: overwrite_var: Overwriting "sys" in "sys = read_string()" leaks the storage that "sys" points to. tools/perf/util/trace-event-read.c:353: leaked_storage: Variable "sys" 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/1538490554-8161-6-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-read.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/tools/perf/util/trace-event-read.c +++ b/tools/perf/util/trace-event-read.c @@ -349,9 +349,12 @@ static int read_event_files(struct tep_h for (x=0; x < count; x++) { size = read8(pevent); ret = read_event_file(pevent, sys, size); - if (ret) + if (ret) { + free(sys); return ret; + } } + free(sys); } return 0; }
