r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/uevent_seqnum', 0x0, 0x0)
preadv(r0, &(0x7f00000002c0)=[{&(0x7f0000000100)=""/29, 0x1d}], 0x1, 0x0, 0x0)