{
   call_rcu_memb
   Memcheck:Leak
   match-leak-kinds: possible,definite
   ...
   fun:get_default_call_rcu_data_memb
   fun:call_rcu_memb
}
{
   call_rcu_data_init
   Memcheck:Leak
   match-leak-kinds: possible
   fun:calloc
   fun:_dl_allocate_tls
   ...
   fun:call_rcu_data_init
}
{
   urcu_memb_call_rcu
   Memcheck:Leak
   match-leak-kinds: possible
   ...
   fun:pthread_create*
   obj:/*/liburcu.so.*
   ...
   fun:urcu_memb_call_rcu
}
{
   pthread_create
   Memcheck:Leak
   match-leak-kinds: possible
   fun:calloc
   ...
   fun:allocate_stack
   fun:pthread_create*
   fun:kthread_create
   fun:bch2_rebalance_start
}