diff options
| author | Dmitry Torokhov <[email protected]> | 2017-09-04 09:22:54 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <[email protected]> | 2017-09-04 09:22:54 -0700 |
| commit | a6cbfa1e6d38c4b3ab0ce7e3aea4bb4e744f24b8 (patch) | |
| tree | 8960e571a398b5d32e72bdb9c89ce965daa870ab /kernel/trace/trace.c | |
| parent | f5308d1b83eba20e69df5e0926ba7257c8dd9074 (diff) | |
| parent | 08d6ac9ee5fedd82040bc878705981b67a116a3f (diff) | |
Merge branch 'next' into for-linus
Prepare input updates for 4.14 merge window.
Diffstat (limited to 'kernel/trace/trace.c')
| -rw-r--r-- | kernel/trace/trace.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 1122f151466f..091e801145c9 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -6881,6 +6881,9 @@ ftrace_trace_snapshot_callback(struct trace_array *tr, struct ftrace_hash *hash, char *number; int ret; + if (!tr) + return -ENODEV; + /* hash funcs only work with set_ftrace_filter */ if (!enable) return -EINVAL; |