Hi Steve, On Mon, 2019-03-04 at 16:56 -0500, Steven Rostedt wrote: > On Mon, 4 Mar 2019 16:50:00 -0500 > Steven Rostedt <rostedt@xxxxxxxxxxx> wrote: > > > > +++ b/kernel/trace/trace_events_hist.c > > > @@ -4695,9 +4695,10 @@ static inline void add_to_key(char > > > *compound_key, void *key, > > > /* ensure NULL-termination */ > > > if (size > key_field->size - 1) > > > size = key_field->size - 1; > > > - } > > > > > > - memcpy(compound_key + key_field->offset, key, size); > > > + strncpy(compound_key + key_field->offset, (char *)key, > > > size); > > > + } else > > > + memcpy(compound_key + key_field->offset, key, size); > > > } > > > > > > > Shouldn't we use strncpy() in save_comm() too. Feels safer. > > Note, if that is changed, it can be another patch. This one is fine > as > is. I just was looking at other use cases of memcpy() in that file. > Hmm, I don't think it's really necessary - it's not used in a key so don't care about anything after the null, and TASK_COMM_LEN is used in the memcpy. Tom > -- Steve
