r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000180)='/sys/kernel/rcu_normal', 0x0, 0x0)
readv(r0, &(0x7f00000015c0)=[{&(0x7f00000001c0)=""/4096, 0x1000}], 0x1)