r0 = signalfd4(0xffffffffffffffff, &(0x7f0000000000), 0x8, 0x0)
r1 = dup2(r0, r0)
readv(r1, &(0x7f0000000380)=[{&(0x7f0000000340)=""/38, 0x20000366}], 0x1)