r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000140)='/sys/kernel/uevent_seqnum', 0x0, 0x0)
preadv(r0, &(0x7f0000000180)=[{&(0x7f0000000000)=""/227, 0xe3}], 0x1, 0x0, 0x0)