LISA auto/RW-RB+RW-R
(*
* Result: Sometimes
*
* Process 0 starts (t=198998).
*
* P0 advances slightly (t=198999).
*
* P1 goes back a bit less than one grace period (t=100000).
*
* Process 0 start at t=198998, process 2 end at t=100000: Cycle allowed.
*)
{
}
P0 | P1 ;
f[rcu_read_lock] | f[rcu_read_lock] ;
r[once] r1 x0 | r[once] r1 x1 ;
f[mb] | w[once] x0 1 ;
w[once] x1 1 | f[rcu_read_unlock] ;
f[rcu_read_unlock] | ;
Observed
1:r1=1; 0:r1=1;