From c5765ece8a050836c6255e1276fc8e0e867078da Mon Sep 17 00:00:00 2001 From: Masanari Iida Date: Thu, 15 May 2014 02:13:38 +0900 Subject: [PATCH] perf session: Fix possible null pointer dereference in session.c cppcheck detected following warning: [tools/perf/util/session.c:1628] -> [tools/perf/util/session.c:1632]: (warning) Possible null pointer dereference: session - otherwise it is redundant to check it against null. In order to avoide null pointer, check the pointer before use. Signed-off-by: Masanari Iida Link: http://lkml.kernel.org/r/1400087618-13628-1-git-send-email-standby24x7@gmail.com Signed-off-by: Jiri Olsa --- tools/perf/util/session.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 55960f22233c..64a186edc7be 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1625,13 +1625,14 @@ out_delete_map: void perf_session__fprintf_info(struct perf_session *session, FILE *fp, bool full) { - int fd = perf_data_file__fd(session->file); struct stat st; - int ret; + int fd, ret; if (session == NULL || fp == NULL) return; + fd = perf_data_file__fd(session->file); + ret = fstat(fd, &st); if (ret == -1) return; -- 2.30.2