Messages in this thread Patch in this message | | | Subject | [PATCH perf/core ] [BUGFIX] perf probe: Fix a segfault when removing uprobe events | From | Masami Hiramatsu <> | Date | Wed, 16 Sep 2015 21:52:42 +0900 |
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Fix a segfault bug and a small mistake in perf probe -d.
Since the "ulist" in perf_del_probe_events is never initialized, strlist__add(ulist, *) always causes a segfault when removing uprobe events by perf probe -d.
Also, the "str" local variable is never released if fail to allocate the "klist". This fixes it too.
This has been introduced by the commit e607f1426b58 ("perf probe: Print deleted events in cmd_probe()").
Reported-by: Milian Wolff <milian.wolff@kdab.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> --- tools/perf/builtin-probe.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index 94385ee..f7882ae 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -380,8 +380,11 @@ static int perf_del_probe_events(struct strfilter *filter) goto out; klist = strlist__new(NULL, NULL); - if (!klist) - return -ENOMEM; + ulist = strlist__new(NULL, NULL); + if (!klist || !ulist) { + ret = -ENOMEM; + goto out; + } ret = probe_file__get_events(kfd, filter, klist); if (ret == 0) {
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