r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/rcu_expedited', 0x0, 0x0)
preadv(r0, &(0x7f0000000140)=[{&(0x7f0000000040)=""/203, 0xcb}], 0x1, 0x0, 0x0)