Question: why does check_mem_load always check for 8 bytes?

[hsqStephenZhang]

check_mem_load always check for 8 bytes load, even for LD_ABS_B, is it by design?

rbpf/src/interpreter.rs

Line 147 in 2b33577

check_mem_load(x as u64, 8, insn_ptr)?;

[qmonnet]

I honestly can't remember, 477c95d was from 9 years ago. This really looks like a bug though, and pretty bad because we're also checking 8 bytes in the case of the _DW variants.

Would you mind fixing and adding a unit test? I can do it otherwise.

Thanks for the report!