diff options
| -rw-r--r-- | kernel/trace/ftrace.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 4c28dd177ca6..5ff0822342ac 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -5076,6 +5076,9 @@ ftrace_mod_callback(struct trace_array *tr, struct ftrace_hash *hash, char *func; int ret; + if (!tr) + return -ENODEV; + /* match_records() modifies func, and we need the original */ func = kstrdup(func_orig, GFP_KERNEL); if (!func) |