socketpair$unix(0x1, 0x1, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) recvmsg$unix(r1, &(0x7f00000001c0)={0x0, 0x0, 0x0}, 0x12102) writev(r0, &(0x7f00000004c0)=[{&(0x7f0000000000)='~', 0x1}], 0x1)