Fix null ptr deref in bbpos_parse()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

diff --git a/tools-util.c b/tools-util.c
index 624656a1fa50d16f322414e6f0aa30c5938075a0..81ce63ae95ba431e161b6bea53227d2f672a27d9 100644 (file)
--- a/tools-util.c
+++ b/tools-util.c
@@ -671,6 +671,10 @@ struct bbpos bbpos_parse(char *buf)
                die("invalid bbpos %s", buf);
 
        ret.btree = read_string_list_or_die(field, bch2_btree_ids, "btree id");
+
+       if (!s)
+               die("invalid bbpos %s", buf);
+
        ret.pos = bpos_parse(s);
        return ret;
 }