Hacker News new | ask | show | jobs
by carlmr 433 days ago
>To fix bugs, sure.

Maybe your program worked due to the bug they fixed.
1 comments
lmm 433 days ago
Extremely unlikely. CPU bugs generally halt the CPU or fail to write the result or something like that. The Pentium FDIV bug where it would give a plausible but wrong result was a once in a lifetime thing.
link
baq 433 days ago
Spectre and Meltdown exploits stopped working, too. Some of them on some CPUs, anyway.
link
lmm 433 days ago
Sure. But those were obviously exploits from the start. You wouldn't write code like that accidentally.
link
ryao 433 days ago
Do a web search for rdrand and systemd.
link
lmm 433 days ago
> Do a web search for rdrand and systemd.

RDRAND always returning all-FF is exactly the kind of thing that's an obvious bug, not a plausible-but-wrong result.

link
ryao 432 days ago
The other guy said "Maybe your program worked due to the bug they fixed.". The RDRAND fix achieved exactly that.
link