Reset the buf->fb_bulk_op to NULL in libfab_buf_fini().
@@ -1751,6 +1751,7 @@ static void libfab_buf_fini(struct m0_fab__buf *buf)
if (buf->fb_bulk_op != NULL && fab_bulk_tlink_is_in(buf->fb_bulk_op)) {
fab_bulk_tlist_del(buf->fb_bulk_op);
m0_free(buf->fb_bulk_op);
+ buf->fb_bulk_op = NULL;
}
if(buf->fb_txctx != NULL) {
