On Mon, 4 Mar 2019 16:50:00 -0500
Steven Rostedt <[email protected]> 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.

-- Steve

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