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perf trace: Free malloc'd trace fields on exit 

ASan reports several memory leaks running:

  # perf test "88: Check open filename arg using perf trace + vfs_getname"

The first of these leaks is related to struct trace fields never being
deallocated.

This patch adds the function trace__exit, which is called at the end of
cmd_trace, replacing the existing deallocation, which is now moved
inside the new function.

This function deallocates:

 - ev_qualifier
 - ev_qualifier_ids.entries
 - syscalls.table
 - sctbl
 - perfconfig_events

Signed-off-by: Riccardo Mancini <rickyman7@gmail.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/de5945ed5c0cb882cbfa3268567d0bff460ff016.1626343282.git.rickyman7@gmail.com
[ Removed needless initialization to zero, missing named initializers are zeroed by the compiler ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Riccardo Mancini 2021-07-15 18:07:20 +02:00 committed by Arnaldo Carvalho de Melo
parent f8cbb0f926
commit 6c7f0ab047
1 changed files with 10 additions and 1 deletions
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11
tools/perf/builtin-trace.c
View File

@ -4701,6 +4701,15 @@ out:
return err;
}
static void trace__exit(struct trace *trace)
{
strlist__delete(trace->ev_qualifier);
free(trace->ev_qualifier_ids.entries);
free(trace->syscalls.table);
syscalltbl__delete(trace->sctbl);
zfree(&trace->perfconfig_events);
}
int cmd_trace(int argc, const char **argv)
{
const char *trace_usage[] = {
@ -5135,6 +5144,6 @@ out_close:
if (output_name != NULL)
fclose(trace.output);
out:
zfree(&trace.perfconfig_events);
trace__exit(&trace);
return err;
}