[PATCH] perf probe: Fix an error handling path in 'parse_perf_probe_command()'

From: Christophe JAILLET
Date: Sun Mar 15 2020 - 16:13:21 EST


If a memory allocation fail, we should branch to the error handling path in
order to free some resources allocated a few lines above.

Fixes: 15354d546986 ("perf probe: Generate event name with line number")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
tools/perf/util/probe-event.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index eea132f512b0..65a615ee4b4c 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -1683,8 +1683,10 @@ int parse_perf_probe_command(const char *cmd, struct perf_probe_event *pev)
if (!pev->event && pev->point.function && pev->point.line
&& !pev->point.lazy_line && !pev->point.offset) {
if (asprintf(&pev->event, "%s_L%d", pev->point.function,
- pev->point.line) < 0)
- return -ENOMEM;
+ pev->point.line) < 0) {
+ ret = -ENOMEM;
+ goto out;
+ }
}

/* Copy arguments and ensure return probe has no C argument */
--
2.20.1