- Rebuild liblwip.a from clean sources (removed initrd.o contamination)
- Add switch.o to provide cpu_switch_to symbol
- Add sys_arch.o to provide sys_now and nexus_lwip_panic
- Add freestanding defines to cc.h (LWIP_NO_CTYPE_H, etc.)
- Compile sys_arch.c with -mcmodel=medany for RISC-V
Fixes duplicate symbol errors and undefined reference errors.
Kernel now builds successfully with: zig build -Dtarget=riscv64-freestanding
BREAKTHROUGH: memp_malloc crashes ELIMINATED
HEPHAESTUS NUCLEAR PROTOCOL:
- Completely bypass memp_pools array in MEMP_MEM_MALLOC mode
- All allocations go through do_memp_malloc_pool(NULL) with 1024-byte fallback
- Added SYS_LIGHTWEIGHT_PROT=0 for NO_SYS mode
- Surgical DNS PCB override remains operational
VALIDATION:
✅ memp_malloc no longer crashes
✅ DNS query successfully enqueues
✅ Heap allocations confirmed working (0x400 + 0x70 bytes)
✅ Surgical fix validated
REMAINING:
Secondary crash in dns_send/udp_sendto at 0x80212C44
This is a DIFFERENT issue - likely UDP packet construction
The forge has tempered the steel.
+ kernel: cc112403
Fixed critical kernel trap (Page Fault at 0x20) occurring during DNS queries.
Root Cause:
- dns_gethostbyname() crashed when accessing NULL udp_pcb pointer
- udp_new_ip_type() failed due to memory pool exhaustion
- MEMP_NUM_UDP_PCB=8 was insufficient (DHCP=1, DNS=1, others=6)
Solution:
- Increased MEMP_NUM_UDP_PCB from 8 to 16 in lwipopts.h
- Added DNS initialization check function in net_glue.nim
- Documented root cause analysis in DNS_NULL_CRASH_RCA.md
Impact:
- System now boots without crashes
- DNS infrastructure stable and ready for queries
- Network stack remains operational under load
Verified: No kernel traps during 60s test run with DHCP + network activity.
Next: Debug DNS query resolution (separate from crash fix).
- Rumpk Core: Complete exorcism of LwIP/NET ghosts. Transitioned to ION nomenclature.
- ABI Sync: Synchronized Zig HAL and Nim Logic Ring Buffer layouts (u32 head/tail/mask).
- Invariant Shield: Hardened HAL pipes with handle-based validation and power-of-2 sync.
- Immune System: Verified Blink Recovery (Self-Healing) with updated ION Control Plane.
- NexShell: Major refactor of Command Plane for Sovereign Ring access.
- Architecture: Updated SPEC files and Doctrines (Silence, Hexagonal Sovereignty).
- Purge: Removed legacy rumk and nip artifacts for a clean substrate.
- Web: Updated landing page vision to match Rumpk v1.1 milestones.
- Implemented Sovereign Syscall Table at 0x801FFF00
- Added cooperative yielding (s_yield) for Guest/Kernel concurrency
- Initialized Guest RX Ring and flows in Kernel
- Bridged LwIP in Guest via net_glue and ion_client overrides
- Validated TCP handshake and data transmission (Subject Zero -> Host)
- Confirmed 'Hello from the Membrane!' via UART and Network
Markus Maiwald