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| author |   Masanari Iida <standby24x7@gmail.com> | 2014-05-15 02:13:38 +0900 |
|---|---|---|
| committer |   Jiri Olsa <jolsa@kernel.org> | 2014-05-16 09:18:51 +0200 |
| commit | c5765ece8a050836c6255e1276fc8e0e867078da (patch) | |
| tree | c2cfc515ddacd64fa9be9d1a0ebe8b10596a9ccb /tools | |
| parent | perf sched: Cleanup, remove unused variables in map_switch_event() (diff) | |
| download | wireguard-linux-c5765ece8a050836c6255e1276fc8e0e867078da.tar.xz wireguard-linux-c5765ece8a050836c6255e1276fc8e0e867078da.zip | |
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 <standby24x7@gmail.com>
Link: http://lkml.kernel.org/r/1400087618-13628-1-git-send-email-standby24x7@gmail.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/session.c | 5 |
1 files 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; |