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authorArnaldo Carvalho de Melo <acme@redhat.com>2015-08-03 16:27:40 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-08-04 12:28:10 -0300
commit9ee67421fe3b67a0796d6ea620fd5fcb037d3f89 (patch)
tree379ff0e5acad160eecf49c5ac5461ae06dca46a9 /tools/perf/builtin-script.c
parent75f80859b130a1cc84e59e71295ce2dd51fe1c81 (diff)
downloadlinux-9ee67421fe3b67a0796d6ea620fd5fcb037d3f89.tar.gz
perf script: No tracepoints? Don't call libtraceevent.
The libtraceevent handler (session->tevent) is only initialized when there are tracepoints in a perf.data event list, so do not call pevent_set_function_resolve() in those cases, fixing a segfault. Reported-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-xyynkucl5p4bcs13zi4i4b1f@git.kernel.org Report-link: http://lkml.kernel.org/r/20150803174113.GA20282@krava.redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-script.c')
-rw-r--r--tools/perf/builtin-script.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index bd31380122f9..7912feb9a024 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -1861,7 +1861,8 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
else
symbol_conf.use_callchain = false;
- if (pevent_set_function_resolver(session->tevent.pevent,
+ if (session->tevent.pevent &&
+ pevent_set_function_resolver(session->tevent.pevent,
machine__resolve_kernel_addr,
&session->machines.host) < 0) {
pr_err("%s: failed to set libtraceevent function resolver\n", __func__);