Robert Allan JamesandClaude Sonnet 5
9142dda2d6
Root-caused a heap-corruption bug that reliably failed WIREBIND identity attach on the third attach/detach cycle in one boot. sk_console_readline() and sk_console_getkey() captured `active_vm` once from their caller and kept passing that same (possibly long-stale) pointer to sk_repl_idle() on every idle tick serviced while blocked waiting for input. If the VM it pointed at was killed (WIREBIND detach) mid-block, the existing bailout only checked a generic "is anyone attached" boolean -- masked as soon as a different identity attached next -- so blk_vm_flush_all() kept writing into a freed VM struct sitting on kmalloc's own free list, corrupting the free list's linked-list metadata itself. Both idle branches now re-resolve the live active VM fresh from g_repl_active_vm on every tick, matching the dispatch-side fix already made for the sibling bug in §XII.3. Verified: rebuilt amd64, reran the exact three-cycle repro that reliably corrupted the heap before the fix -- free-list census stayed stable through the same idle window that previously collapsed to zero. All three architectures (amd64/aarch64/riscv64) boot clean to the zuse)ok> prompt. kmalloc_debug_census()/kmalloc_debug_census_bytes() kept as permanent diagnostic infrastructure; every other temporary probe added during the investigation was reverted. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EXieurDfDSsDFdnSyusuWo
include/starkernel/
Headers for LithosAnanke, the bare-metal UEFI kernel (src/starkernel/).
Built only via Makefile.starkernel; gated by __STARKERNEL__ when shared
with hosted code.
uefi.h— UEFI protocol/type definitions consumed by the loader.elf64.h,elf_loader.h— ELF64 parsing and kernel-image loading.boot_info_offsets.h— struct-offset constants shared between the assembly bootstrap and the C boot path.arch.h,apic.h,timer.h— architecture init, APIC interrupt controller, timer (TSC/HPET/APIC, 100 Hz heartbeat).console.h,framebuffer.h,vt100.h— UART 16550 console, framebuffer driver, and VT100 terminal emulation over the framebuffer.pmm.h,vmm.h,kmalloc.h— physical memory manager (bitmap allocator), 4-level x86_64 paging, kernel heap allocator.pci.h,virtio_blk.h— PCI enumeration and the VirtIO block device driver (disk backend for the kernel block subsystem).capsule.h,capsule_birth.h,capsule_loader.h,capsule_run.h,capsule_vm_physics.h,capsule_generated.h— capsule system types, birth protocol, physics-runtime capsule bindings, and the build-time- generated capsule directory (seetools/mkcapsule.c).kernel_args.h,cmdline.h— boot-time kernel argument parsing (starforth.cfg/ command line).repl.h— kernel REPL.log.h,doe_log.h— kernel logging and DoE metrics logging.q48_16.h— kernel-build copy of Q48.16 fixed-point arithmetic.xxhash64.h— content-addressing hash used for capsule IDs.hal_memory.h— hardware-abstraction-layer memory interface.
Subdirectories:
hal/— top-level hardware-abstraction-layer interface.vm/— kernel VM subsystem headers (capsule arena, parity logging, bootstrap wiring).freestanding/— minimal libc-shim headers (assert.h,ctype.h,errno.h,inttypes.h,math.h,sched.h,signal.h,stdio.h,stdlib.h,string.h,time.h,sys/time.h,sys/types.h) for building shared VM code in the freestanding kernel environment, where no real libc is available.