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authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>2015-03-24 09:57:50 -0400
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-03-24 12:11:19 -0300
commit99ad1417db2e83530b88e3eff1a40285d6ebfee9 (patch)
tree20e1f266226b4cef56283c5c1a6a0b5799d467b2 /tools
parentdeab6f55a2fe6fe044af61c9aad6a8e90cda6499 (diff)
downloadop-kernel-dev-99ad1417db2e83530b88e3eff1a40285d6ebfee9.zip
op-kernel-dev-99ad1417db2e83530b88e3eff1a40285d6ebfee9.tar.gz
tools lib traceevent: Copy trace_clock and free it
The pevent->trace_clock should not be a direct pointer to what was given. It should be copied and freed. Note, valgrind pointed this out when a caller passed in a pointer that needed to be freed and it never was. Ideally, pevent should copy it (which this change does), and free the copy. It's up to the caller to free the clock string passed in. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20150324135922.695906738@goodmis.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/lib/traceevent/event-parse.c10
-rw-r--r--tools/lib/traceevent/event-parse.h2
2 files changed, 9 insertions, 3 deletions
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index 31d4e7d..e71c472 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -321,9 +321,14 @@ int pevent_register_comm(struct pevent *pevent, const char *comm, int pid)
return 0;
}
-void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock)
+int pevent_register_trace_clock(struct pevent *pevent, const char *trace_clock)
{
- pevent->trace_clock = trace_clock;
+ pevent->trace_clock = strdup(trace_clock);
+ if (!pevent->trace_clock) {
+ errno = ENOMEM;
+ return -1;
+ }
+ return 0;
}
struct func_map {
@@ -6352,6 +6357,7 @@ void pevent_free(struct pevent *pevent)
free_handler(handle);
}
+ free(pevent->trace_clock);
free(pevent->events);
free(pevent->sort_events);
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index 6abda54..84e554f 100644
--- a/tools/lib/traceevent/event-parse.h
+++ b/tools/lib/traceevent/event-parse.h
@@ -599,7 +599,7 @@ enum trace_flag_type {
};
int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
-void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock);
+int pevent_register_trace_clock(struct pevent *pevent, const char *trace_clock);
int pevent_register_function(struct pevent *pevent, char *name,
unsigned long long addr, char *mod);
int pevent_register_print_string(struct pevent *pevent, const char *fmt,
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