From ce27a443d17dccf613079a7147cf0d220bc4ec82 Mon Sep 17 00:00:00 2001 From: Jovi Zhang Date: Mon, 25 Jul 2011 22:08:08 +0800 Subject: [PATCH] perf probe: Fix coredump introduced by probe module option perf will coredump if the user doesn't give the "-m" option in probe command, this patch fixes it. [root@localhost perf]# ./perf probe --add='PROBE' Segmentation fault (core dumped) Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1311602888-2389-1-git-send-email-bookjovi@gmail.com Signed-off-by: Jovi Zhang Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/probe-event.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index b82d54fa2c56..1c7bfa5fe0a8 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -1820,11 +1820,15 @@ static int convert_to_probe_trace_events(struct perf_probe_event *pev, ret = -ENOMEM; goto error; } - tev->point.module = strdup(module); - if (tev->point.module == NULL) { - ret = -ENOMEM; - goto error; + + if (module) { + tev->point.module = strdup(module); + if (tev->point.module == NULL) { + ret = -ENOMEM; + goto error; + } } + tev->point.offset = pev->point.offset; tev->point.retprobe = pev->point.retprobe; tev->nargs = pev->nargs; -- 2.20.1