[tip:perf/core] perf probe: Fix a memory leak for scopes array

tip-bot for Masami Hiramatsu
2011-08-14T15:39:55Z

Commit-ID: 8afa2a707d3d1320df5d35966729ac5262da737d
Gitweb: http://git.kernel.org/tip/8afa2a707d3d1320df5d35966729ac5262da737d
Author: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
AuthorDate: Thu, 11 Aug 2011 20:02:29 +0900
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Fri, 12 Aug 2011 09:21:15 -0300

perf probe: Fix a memory leak for scopes array

Fix a memory leak for scopes array when it finds a variable in the
global scope.

Reviewed-by: Pekka Enberg <penberg@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: yrl.pp-manager.tt@hitachi.com
Link: http://lkml.kernel.org/r/20110811110229.19900.63019.stgit@fedora15
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/probe-finder.c | 5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 3e44a3e..573c723 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -660,6 +660,7 @@ static int find_variable(Dwarf_Die *sp_die, struct probe_finder *pf)
else {
/* Search upper class */
nscopes = dwarf_getscopes_die(sp_die, &scopes);
+ ret = -ENOENT;
while (nscopes-- > 1) {
pr_debug("Searching variables in %s\n",
dwarf_diename(&scopes[nscopes]));
@@ -668,14 +669,12 @@ static int find_variable(Dwarf_Die *sp_die, struct probe_finder *pf)
pf->pvar->var, 0,
&vr_die)) {
ret = convert_variable(&vr_die, pf);
- goto found;
+ break;
}
}
if (scopes)
free(scopes);
- ret = -ENOENT;
}
-found:
if (ret < 0)
pr_warning("Failed to find '%s' in this function.\n",
pf->pvar->var);