prctl$PR_SET_SYSCALL_USER_DISPATCH_ON(0x3b, 0x1, 0x0, 0x0, &(0x7f0000000080)) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$unix(r1, &(0x7f0000000080)={0x0, 0x0, 0x0, 0x0, &(0x7f0000000040)=ANY=[@ANYBLOB="14"], 0x18}, 0x0) recvmsg$unix(r0, &(0x7f0000002040)={0x0, 0x0, 0x0}, 0x0)