Commit-ID: 388c3aab5d4f1b0bbfe2d5f47e7cd681866bc573
Gitweb: http://git.kernel.org/tip/388c3aab5d4f1b0bbfe2d5f47e7cd681866bc573
Author: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
AuthorDate: Thu, 18 Feb 2010 13:16:52 -0500
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Mon, 22 Feb 2010 11:42:27 +0100
perf probe: Init struct probe_point and set counter correctly
Clear struct probe_point before using it in
show_perf_probe_events(), and set pp->found counter correctly in
synthesize_perf_probe_point(). Without this initialization,
clear_probe_point() will free random addresses.
Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: systemtap <systemtap@xxxxxxxxxxxxxxxxxx>
Cc: DLE <dle-develop@xxxxxxxxxxxxxxxxxxxxx>
LKML-Reference: <20100218181652.26547.57790.stgit@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
tools/perf/util/probe-event.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 29465d4..fde17b0 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -272,6 +272,7 @@ int synthesize_perf_probe_point(struct probe_point *pp)
int ret;
pp->probes[0] = buf = zalloc(MAX_CMDLEN);
+ pp->found = 1;
if (!buf)
die("Failed to allocate memory by zalloc.");
if (pp->offset) {
@@ -294,6 +295,7 @@ int synthesize_perf_probe_point(struct probe_point *pp)
error:
free(pp->probes[0]);
pp->probes[0] = NULL;
+ pp->found = 0;
}
return ret;
}
@@ -455,6 +457,7 @@ void show_perf_probe_events(void)
struct strlist *rawlist;
struct str_node *ent;
+ memset(&pp, 0, sizeof(pp));
fd = open_kprobe_events(O_RDONLY, 0);
rawlist = get_trace_kprobe_event_rawlist(fd);
close(fd);
--
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