garbage in pointer

// this is the function I'm trying to jump to
0x40102e <lit>                  lods   %ds:(%rsi),%rax
0x401030 <lit+2>                push   %rax
0x401031 <lit+3>                lods   %ds:(%rsi),%rax
0x401033 <lit+5>                jmpq   *%rax

// this is where we're executing from
0x401035 <hello_world>          push   %rsi
// %rax is equal to 0x401035, I checked.
// %rax now loads from 0x401043, I checked the math too.
0x401036 <hello_world+1>        mov    0xe(%rax),%rax
0x40103a <hello_world+5>        lea    0xa(%rip),%rsi        # 0x40104b <hello_world+22>0x401041 <hello_world+12>

// the rsi trick seems to load the correct address
    (gdb) info reg rsi
    rsi            0x40104b 4198475

// segfault

jmpq   *%rax
// this is the beginning of the data, which is an array of 64-bit pointers.
// %rax is supposed to point at 0x40102e, i.e. <lit>, but instead it points at garbage.

    (gdb) p/x *(long*) 0x401043
    $4 = 0x680040102e

// and I can confirm that %rax equals the same.
// as we can see, 0x401043 is actually equal to
// 0x000000680040102e instead of
//         ^ why is this here?
// 0x000000000040102e

// this data was generated with

    <code>
    .long lit
    .long 'h'
    <...>

0x401043 <hello_world+14>       adc    %al,%cs:0x0(%rax)
0x401047 <hello_world+18>       pushq  $0x5000000
0x40104c <hello_world+23>       adc    %al,0x0(%rax)
0x40104f <hello_world+26>       adc    %al,%cs:0x0(%rax)
0x401053 <hello_world+30>       insb   (%dx),%es:(%rdi)