bcachefs-tools/tests/valgrind-suppressions.txt

{
   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
}