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fix(v4.0.0): storage -- what the review of step 6 found

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A block request with fewer than two values on the stack is refused; it
had acted on whatever the stack ring held and stopped the node.

Bare metal: when the kernel's chain takes the place of POST's block RAM
the node's two buffers are emptied, so it no longer holds POST's copy of
a block; and the chain's fast RAM is cleared, so a node cannot read what
was in the kernel's heap.

blocks.c is built with each test under that test's own warnings and
sanitizers; it had been left out of both.  The hosted link cleans its
object directory first: it had linked the withdrawn store_v3.o left there
from the day before.

node.h and DECOMPOSITION.md D-19 no longer describe the message device or
the four registers as current.  MESH.md 8.5 records two findings for
ruling: a node's own copy of a block, and a block read over a node's code.

From a clean build: make -C v4 test, sanitize and hosted-check pass;
amd64, aarch64 and riscv64 boot, POST 538 of 538, same hashes, blocks 1
and 2047 clean at the prompt: logs/20261007-085017, -085254, -085636.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
rajames
2026-10-07 08:58:52 -04:00
co-authored by Claude Opus 5.5
parent 6d90375da7
commit bcfd6556a8
15 changed files with 543 additions and 33 deletions
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docs/v4.0.0/plans/2026-10-06-step6-storage.md
+1 -1
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@@ -8,7 +8,7 @@
**Tech Stack:** C99 (engine, strict flags), v3's `block_subsystem.c` and `blkio_*.c` (gnu99), the v4 nucleus dialect (`v4/capsule/*.v4`), `make -C v4`, `make -f kernel/Makefile`.
**Spec:** `docs/v4.0.0/MESH.md` section 8 (8.1 to 8.4; 8.5 lists what was withdrawn), section 9's ruling of 2026-10-07, and step 6 in section 10. `docs/v4.0.0/ENGINE.md` 3.3. `docs/v4.0.0/V3-PARITY.md` 1d.
**Spec:** `docs/v4.0.0/MESH.md` section 8 (8.1 to 8.4; 8.6 lists what was withdrawn), section 9's ruling of 2026-10-07, and step 6 in section 10. `docs/v4.0.0/ENGINE.md` 3.3. `docs/v4.0.0/V3-PARITY.md` 1d.
**History:** the first version of this plan built storage as a device speaking messages, with private drives and nodes that had none. Tasks 1 and 2 of it were committed (`0e761cb1`, `4a505a15`) and Tasks 3 and 4 were working in the tree when Captain Bob ruled, on 2026-10-07, that it had left the OS as designed. This version keeps what still serves and removes the rest.