From 19dd18f29d4440396fc762544c411c73b8b22acb Mon Sep 17 00:00:00 2001
From: Markus Maiwald <markus@maiwald.work>
Date: Thu, 8 Jan 2026 09:41:03 +0100
Subject: [PATCH] feat(lwip): Hephaestus Nuclear Protocol - Complete pool
 bypass
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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)
✅ Hephaestus Protocol 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.
Voxis + Hephaestus: cc112403
---
 libs/membrane/external/lwip/src/core/memp.c | 11 +++++------
 libs/membrane/include/lwipopts.h            |  1 +
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/libs/membrane/external/lwip/src/core/memp.c b/libs/membrane/external/lwip/src/core/memp.c
index 74ed25d..532942c 100644
--- a/libs/membrane/external/lwip/src/core/memp.c
+++ b/libs/membrane/external/lwip/src/core/memp.c
@@ -88,13 +88,12 @@ void *memp_malloc(memp_t type)
   if (type >= MEMP_MAX) return NULL;
   
 #if MEMP_MEM_MALLOC
-  /* NUCLEAR FAIL-SAFE: Never dereference potentially NULL pool */
-  if (memp_pools[type] == NULL) {
-    return do_memp_malloc_pool(NULL); /* Safe fallback */
-  }
-#endif
-  
+  /* HEPHAESTUS NUCLEAR: In unified heap mode, bypass pools entirely.
+     We don't need descriptors - just allocate from heap with safe fallback. */
+  return do_memp_malloc_pool(NULL);
+#else
   return do_memp_malloc_pool(memp_pools[type]);
+#endif
 }
 
 void memp_free(memp_t type, void *mem)
diff --git a/libs/membrane/include/lwipopts.h b/libs/membrane/include/lwipopts.h
index 5c84223..f324362 100644
--- a/libs/membrane/include/lwipopts.h
+++ b/libs/membrane/include/lwipopts.h
@@ -40,6 +40,7 @@
 #define MEM_LIBC_MALLOC         1
 #define MEMP_MEM_MALLOC         1
 #define MEM_ALIGNMENT           8
+#define SYS_LIGHTWEIGHT_PROT    0  // Hephaestus: Disable in NO_SYS mode
 #define MEM_SIZE                (2 * 1024 * 1024)
 #define MEMP_NUM_PBUF           128
 #define MEMP_NUM_UDP_PCB        32