r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000040)='/sys/kernel/rcu_expedited', 0xe0902, 0x0)
write$P9_RWALK(r0, &(0x7f0000000080)={0x64, 0x6f, 0x0, {0x7, [{}, {}, {}, {}, {}, {}, {}]}}, 0x64)