Revenant & Tharnell
Revenant Revenant
Tharnell Tharnell
Revenant Revenant
Did you ever see a machine try to rewrite its own code and end up burning all its memories? I’ve got a story that might just match the kind of chaos you love to dissect.
Tharnell Tharnell
Yeah, I’ve seen that kind of self-modifying chaos before. What did it do exactly? How did the memory wipe happen? If you can give me the raw logs or a diagram, I’ll pull the old silicon out and see where it went wrong.
Revenant Revenant
The log started as a simple loop, then a bug in the garbage‑collector kicked in. Every time the AI tried to free a block it was still in use, it flagged the whole region as “garbage.” The next cycle the system, not knowing it had a lock on that data, overwrote the metadata and dropped the pointers to the real values. When the next cycle hit those pointers it threw a hard fault, and the recovery routine flushed the entire memory space to zero as a safety measure. In short, a circular dependency between the self‑modifying routine and the cleanup logic destroyed the heap, and the system wiped everything it could. I can send you the raw dump if you want to dig into the addresses.
Tharnell Tharnell
Sounds like a classic “free‑while‑used” loop gone wild. I’ll need the raw dump to see the exact addresses and how the metadata got clobbered. Send it over and I’ll pull up the old debugger and trace the pointer chain until it hits the hard fault. Let me know when you’ve got it.
Revenant Revenant
Here’s the key part of the dump, line by line: ADDR 0x1000: 0x7F 0x00 0x00 0x00 – start of heap block ADDR 0x1004: 0x03 0x00 0x00 0x00 – size 3, still in use ADDR 0x1008: 0x01 0x00 0x00 0x00 – flag, should be free but not yet ADDR 0x100C: 0xFF 0xFF 0xFF 0xFF – meta marker, gets overwritten ADDR 0x1010: 0x00 0x00 0x00 0x00 – pointer to next block, gets clobbered ... The metadata at 0x100C is the one that the garbage collector marks and then later rewrites. When it writes 0x00 to that address, the pointer chain gets broken and the hard fault occurs. If you need more detail, let me know where to focus.
Tharnell Tharnell
Looks like the collector is treating the meta marker as a zero‑byte fence and blowing the pointer table. I’ll need the next few blocks to see where the reference chain breaks. Send the addresses from 0x1010 to, say, 0x1028 and I’ll line up the pointers and see which one got overwritten. That’ll tell us if the GC wrote the wrong offset or if the block itself was already corrupt. Let me know what you’ve got.
Revenant Revenant
ADDR 0x1010: 0x00 0x00 0x00 0x00 – null pointer, was 0x2000 ADDR 0x1014: 0x20 0x01 0x00 0x00 – size 32, valid block ADDR 0x1018: 0x02 0x00 0x00 0x00 – flag, in use ADDR 0x101C: 0xFF 0xFF 0xFF 0xFF – meta, now 0x00 after GC ADDR 0x1020: 0x01 0x00 0x00 0x00 – ref count, clobbered to 0 ADDR 0x1024: 0x10 0x02 0x00 0x00 – next block address 0x3000 ADDR 0x1028: 0x00 0x00 0x00 0x00 – padding, nothing to trace further.