{
  "schema": "nodefusion.education-recording/1",
  "course": "2026A",
  "chapter": 5,
  "variant": "observed",
  "run": "ucore-2026A-ch5-observed",
  "html": "ucore-2026A-ch5-observed.html",
  "source": {
    "kernel_commit": "386f10c55d0285273b78df19c4607c0f475e17a2",
    "kernel_patch": "diff --git a/Makefile b/Makefile\nindex f869484..9f12a22 100644\n--- a/Makefile\n+++ b/Makefile\n@@ -14,7 +14,7 @@ GDB = $(TOOLPREFIX)gdb\n CP = cp\n BUILDDIR = build\n C_SRCS = $(wildcard $K/*.c)\n-AS_SRCS = $(wildcard $K/*.S)\n+AS_SRCS := $(wildcard $K/*.S)\n C_OBJS = $(addprefix $(BUILDDIR)/, $(addsuffix .o, $(basename $(C_SRCS))))\n AS_OBJS = $(addprefix $(BUILDDIR)/, $(addsuffix .o, $(basename $(AS_SRCS))))\n OBJS = $(C_OBJS) $(AS_OBJS)\ndiff --git a/os/kalloc.c b/os/kalloc.c\nindex 3c7c48b..5bea13e 100644\n--- a/os/kalloc.c\n+++ b/os/kalloc.c\n@@ -1,6 +1,7 @@\n #include \"kalloc.h\"\n #include \"defs.h\"\n #include \"riscv.h\"\n+#include \"nftrace.h\"\n \n extern char ekernel[];\n \n@@ -12,6 +13,10 @@ struct {\n \tstruct linklist *freelist;\n } kmem;\n \n+static uint64 nf_free_pages;\n+static uint64 nf_used_pages;\n+static int nftrace_ready;\n+\n void freerange(void *pa_start, void *pa_end)\n {\n \tchar *p;\n@@ -23,6 +28,8 @@ void freerange(void *pa_start, void *pa_end)\n void kinit()\n {\n \tfreerange(ekernel, (void *)PHYSTOP);\n+\tnftrace_ready = 1;\n+\tnftrace_allocator_state(nf_free_pages, nf_used_pages);\n }\n \n // Free the page of physical memory pointed at by v,\n@@ -40,6 +47,11 @@ void kfree(void *pa)\n \tl = (struct linklist *)pa;\n \tl->next = kmem.freelist;\n \tkmem.freelist = l;\n+\tnf_free_pages++;\n+\tif (nftrace_ready) {\n+\t\tnf_used_pages--;\n+\t\tnftrace_page_free((uint64)pa, nf_free_pages, nf_used_pages);\n+\t}\n }\n \n // Allocate one 4096-byte page of physical memory.\n@@ -51,7 +63,11 @@ void *kalloc()\n \tl = kmem.freelist;\n \tif (l) {\n \t\tkmem.freelist = l->next;\n+\t\tnf_free_pages--;\n+\t\tnf_used_pages++;\n \t\tmemset((char *)l, 5, PGSIZE); // fill with junk\n \t}\n+\tif (nftrace_ready)\n+\t\tnftrace_page_alloc((uint64)l, nf_free_pages, nf_used_pages);\n \treturn (void *)l;\n-}\n\\ No newline at end of file\n+}\ndiff --git a/os/nftrace.c b/os/nftrace.c\nnew file mode 100644\nindex 0000000..8d99129\n--- /dev/null\n+++ b/os/nftrace.c\n@@ -0,0 +1,39 @@\n+#include \"nftrace.h\"\n+\n+__attribute__((noinline))\n+void nftrace_commit_point(const struct nftrace_record *record)\n+{\n+\tif (record != 0)\n+\t\t__asm__ volatile(\"\" : : \"r\"(*(volatile const uint64 *)record) : \"memory\");\n+}\n+\n+static inline void emit(uint64 type, uint64 a0, uint64 a1, uint64 a2, uint64 a3)\n+{\n+\tconst struct nftrace_record record = { type, { a0, a1, a2, a3 } };\n+\tnftrace_commit_point(&record);\n+}\n+\n+void nftrace_page_alloc(uint64 pa, uint64 free_pages, uint64 used_pages)\n+{\n+\temit(1, pa, 1, free_pages, used_pages);\n+}\n+\n+void nftrace_page_free(uint64 pa, uint64 free_pages, uint64 used_pages)\n+{\n+\temit(5, pa, 1, free_pages, used_pages);\n+}\n+\n+void nftrace_allocator_state(uint64 free_pages, uint64 used_pages)\n+{\n+\temit(6, free_pages, used_pages, 0, 0);\n+}\n+\n+void nftrace_proc_fork(uint64 parent, uint64 child)\n+{\n+\temit(2, parent, child, 0, 0);\n+}\n+\n+void nftrace_sched_switch(uint64 from_task, uint64 to_task, uint64 from_pid, uint64 to_pid)\n+{\n+\temit(4, from_task, to_task, from_pid, to_pid);\n+}\ndiff --git a/os/nftrace.h b/os/nftrace.h\nnew file mode 100644\nindex 0000000..e1428ae\n--- /dev/null\n+++ b/os/nftrace.h\n@@ -0,0 +1,18 @@\n+#ifndef NFTRACE_H\n+#define NFTRACE_H\n+\n+#include \"types.h\"\n+\n+struct nftrace_record {\n+\tuint64 type;\n+\tuint64 a[4];\n+};\n+\n+void nftrace_commit_point(const struct nftrace_record *record);\n+void nftrace_page_alloc(uint64 pa, uint64 free_pages, uint64 used_pages);\n+void nftrace_page_free(uint64 pa, uint64 free_pages, uint64 used_pages);\n+void nftrace_allocator_state(uint64 free_pages, uint64 used_pages);\n+void nftrace_proc_fork(uint64 parent, uint64 child);\n+void nftrace_sched_switch(uint64 from_task, uint64 to_task, uint64 from_pid, uint64 to_pid);\n+\n+#endif\ndiff --git a/os/proc.c b/os/proc.c\nindex 9187793..95af12e 100644\n--- a/os/proc.c\n+++ b/os/proc.c\n@@ -4,6 +4,7 @@\n #include \"trap.h\"\n #include \"vm.h\"\n #include \"queue.h\"\n+#include \"nftrace.h\"\n \n struct proc pool[NPROC];\n __attribute__((aligned(16))) char kstack[NPROC][PAGE_SIZE];\n@@ -127,6 +128,7 @@ void scheduler()\n \t\ttracef(\"swtich to proc %d\", p - pool);\n \t\tp->state = RUNNING;\n \t\tcurrent_proc = p;\n+\t\tnftrace_sched_switch((uint64)&idle, (uint64)p, (uint64)-1, p->pid);\n \t\tswtch(&idle.context, &p->context);\n \t}\n }\n@@ -143,6 +145,7 @@ void sched()\n \tstruct proc *p = curr_proc();\n \tif (p->state == RUNNING)\n \t\tpanic(\"sched running\");\n+\tnftrace_sched_switch((uint64)p, (uint64)&idle, p->pid, (uint64)-1);\n \tswtch(&p->context, &idle.context);\n }\n \n@@ -194,6 +197,7 @@ int fork()\n \tnp->parent = p;\n \tnp->state = RUNNABLE;\n \tadd_task(np);\n+\tnftrace_proc_fork(p->pid, np->pid);\n \treturn np->pid;\n }\n \ndiff --git a/os/vm.c b/os/vm.c\nindex b315495..af83760 100644\n--- a/os/vm.c\n+++ b/os/vm.c\n@@ -2,6 +2,12 @@\n #include \"defs.h\"\n #include \"riscv.h\"\n \n+__attribute__((noinline))\n+void nodefusion_pagetable_map(uint64 va, uint64 pa, uint64 flags)\n+{\n+\t__asm__ volatile(\"\" : : \"r\"(va), \"r\"(pa), \"r\"(flags) : \"memory\");\n+}\n+\n pagetable_t kernel_pagetable;\n \n extern char e_text[]; // kernel.ld sets this to end of kernel code.\n@@ -126,6 +132,7 @@ int mappages(pagetable_t pagetable, uint64 va, uint64 size, uint64 pa, int perm)\n \t\t\treturn -1;\n \t\t}\n \t\t*pte = PA2PTE(pa) | perm | PTE_V;\n+\t\tnodefusion_pagetable_map(a, pa, perm | PTE_V);\n \t\tif (a == last)\n \t\t\tbreak;\n \t\ta += PGSIZE;\n@@ -375,4 +382,3 @@ uint64 uvmdealloc(pagetable_t pagetable, uint64 oldsz, uint64 newsz)\n \n         return newsz;\n }\n-\n",
    "user_commit": "1733f460c596b013b1c509ad42afa428640783b0",
    "user_patch": "diff --git a/CMakeLists.txt b/CMakeLists.txt\nindex f5a9fac..ab1986d 100644\n--- a/CMakeLists.txt\n+++ b/CMakeLists.txt\n@@ -15,12 +15,12 @@ set(ASM_DIR asm)\n set(BIN_DIR bin)\n \n # Toolchain\n-set(PREFIX ${ARCH}-linux-musl-)\n+set(PREFIX ${ARCH}-linux-musl- CACHE STRING \"Cross compiler prefix\")\n \n if (${ARCH} STREQUAL riscv32)\n-    set(CMAKE_C_FLAGS       \"-march=rv32imac -mabi=ilp32 -mcmodel=medany\")\n+    set(CMAKE_C_FLAGS       \"-march=rv32imac_zicsr_zifencei -mabi=ilp32 -mcmodel=medany\")\n elseif (${ARCH} STREQUAL riscv64)\n-    set(CMAKE_C_FLAGS       \"-march=rv64imac -mabi=lp64 -mcmodel=medany\")\n+    set(CMAKE_C_FLAGS       \"-march=rv64imac_zicsr_zifencei -mabi=lp64 -mcmodel=medany\")\n else()\n     message(\"Unsupported arch: ${ARCH}\")\n endif ()\ndiff --git a/Makefile b/Makefile\nindex be632ac..64f1ab6 100644\n--- a/Makefile\n+++ b/Makefile\n@@ -7,15 +7,16 @@ app_dir = src\n elf_dir := build/$(ARCH)\n bin_dir := build/bin\n out_dir := target\n-cmake_build_args := -DARCH=$(ARCH) -DCHAPTER=$(CHAPTER)\n+TOOLPREFIX ?= $(ARCH)-linux-musl-\n+cmake_build_args := -DARCH=$(ARCH) -DCHAPTER=$(CHAPTER) -DPREFIX=$(TOOLPREFIX)\n ifeq ($(MODE), release)\n cmake_build_args += -DCMAKE_BUILD_TYPE=Release\n else ifeq ($(MODE), debug)\n cmake_build_args += -DCMAKE_BUILD_TYPE=Debug\n endif\n \n-OBJCOPY := $(ARCH)-linux-musl-objcopy\n-OBJDUMP := $(ARCH)-linux-musl-objdump\n+OBJCOPY := $(TOOLPREFIX)objcopy\n+OBJDUMP := $(TOOLPREFIX)objdump\n CP := cp\n CH_TESTS :=  \n \ndiff --git a/src/ch6b_exec.c b/src/ch6b_exec.c\nindex 1a1d9c6..b67cf35 100644\n--- a/src/ch6b_exec.c\n+++ b/src/ch6b_exec.c\n@@ -5,7 +5,7 @@\n int main()\n {\n \tchar *_argv[] = {\n-\t\t\"(*o*)\", \"(>.<)\", \"(O.O)\", \"(QwQ)\", \"orz\", \"没有了呀\"\n+\t\t\"(*o*)\", \"(>.<)\", \"(O.O)\", \"(QwQ)\", \"orz\", \"没有了呀\", NULL\n \t};\n \texec(\"ch6b_args\", _argv);\n \treturn 0;\ndiff --git a/src/ch6b_filetest_simple.c b/src/ch6b_filetest_simple.c\nindex 062cecf..a27e982 100644\n--- a/src/ch6b_filetest_simple.c\n+++ b/src/ch6b_filetest_simple.c\n@@ -15,7 +15,9 @@ int main()\n \tfd = open(filea, O_RDONLY);\n \tassert(fd > 0);\n \tchar buf[16];\n-\tread(fd, buf, 16);\n+\tint nread = read(fd, buf, sizeof(buf) - 1);\n+\tassert_eq(nread, strlen(s));\n+\tbuf[nread] = '\\0';\n \tclose(fd);\n \tassert(strcmp(s, buf) == 0);\n \tputs(\"file_test passed!\");\ndiff --git a/src/ch6b_usertest.c b/src/ch6b_usertest.c\nindex cdd9fc8..1cb5f3a 100644\n--- a/src/ch6b_usertest.c\n+++ b/src/ch6b_usertest.c\n@@ -11,7 +11,7 @@ const char *TESTS[] = {\n \t\"ch3b_sleep1\\0\",      \"ch3b_yield0\\0\",\t  \"ch3b_yield1\\0\",\n \t\"ch3b_yield2\\0\",      \"ch5b_getpid\\0\",\t  \"ch5b_forktest0\\0\",\n \t\"ch5b_forktest1\\0\",   \"ch5b_forktest2\\0\", \"ch5b_exit\\0\",\n-\t\"ch6b_filetest\\0\",    \"ch6b_exec\\0\",\n+\t\"ch6b_filetest_simple\\0\",    \"ch6b_exec\\0\",\n };\n \n int main()\ndiff --git a/src/ch7b_usertest.c b/src/ch7b_usertest.c\nindex 1f634d4..8bfc7c8 100644\n--- a/src/ch7b_usertest.c\n+++ b/src/ch7b_usertest.c\n@@ -10,7 +10,7 @@ const char *TESTS[] = {\n \t\"ch3b_sleep1\\0\",      \"ch3b_yield0\\0\",\t  \"ch3b_yield1\\0\",\n \t\"ch3b_yield2\\0\",      \"ch5b_exit\\0\",\t  \"ch5b_getpid\\0\",\n \t\"ch5b_forktest0\\0\",   \"ch5b_forktest1\\0\", \"ch5b_forktest2\\0\",\n-\t\"ch5b_exit\\0\",\t      \"ch6b_filetest\\0\",  \"ch6b_exec\\0\",\n+\t\"ch5b_exit\\0\",\t      \"ch6b_filetest_simple\\0\",  \"ch6b_exec\\0\",\n \t\"ch7b_pipetest\\0\",\n };\n \ndiff --git a/src/ch8b_usertest.c b/src/ch8b_usertest.c\nindex 1cce5ce..f088c38 100644\n--- a/src/ch8b_usertest.c\n+++ b/src/ch8b_usertest.c\n@@ -10,9 +10,9 @@ const char *TESTS[] = {\n \t\"ch3b_sleep1\\0\",        \"ch3b_yield0\\0\",      \"ch3b_yield1\\0\",\n \t\"ch3b_yield2\\0\",        \"ch5b_getpid\\0\",      \"ch5b_forktest0\\0\",\n \t\"ch5b_forktest1\\0\",     \"ch5b_forktest2\\0\",   \"ch5b_exit\\0\",\n-\t\"ch6b_filetest\\0\",      \"ch6b_exec\\0\",        \"ch7b_pipetest\\0\",\n+\t\"ch6b_filetest_simple\\0\",      \"ch6b_exec\\0\",        \"ch7b_pipetest\\0\",\n \t\"ch8b_mpsc_sem\\0\",\n-\t\"ch8b_mut_phi_din.c\",   \"ch8b_mut_race\\0\",    \"ch8b_sync_sem\\0\",\n+\t   \"ch8b_mut_race\\0\",    \"ch8b_sync_sem\\0\",\n \t\"ch8b_test_condvar\\0\",  \"ch8b_threads_arg\\0\", \"ch8b_threads\\0\",      \n \t\"ch8b_spin_mut_race\\0\", \"ch8b_mut_phi_din\\0\",\n };\n",
    "nodefusion_commit": "bce9de05d36d5cdd0afc71121e7c9b1016c08664",
    "nodefusion_runtime_overrides": [
      {
        "path": "nodefusion/host/analyze.py",
        "sha256": "b1c4a595a54058841630ba7b18818688efd00b8085b03ca91767208ec3b499e8",
        "patch": "diff --git a/nodefusion/host/analyze.py b/nodefusion/host/analyze.py\nindex a6ca1e7..31b6599 100644\n--- a/nodefusion/host/analyze.py\n+++ b/nodefusion/host/analyze.py\n@@ -642,6 +642,12 @@ class Analysis:\n         from ..model.manifest import _COMPLETENESS\n         from ..model.snapshot import _completeness\n         got = _completeness(res.sources)[\"completeness\"]\n+        if got == \"total\":\n+            from ..model.resolve import PRESENT\n+            contexts = [field for entity in ents.res.entities if entity.sources\n+                        for field in entity.fields if field.role == \"sched_context\"]\n+            if not any(field.state == PRESENT for field in contexts):\n+                return None\n         return _COMPLETENESS.get(got)\n \n     def _task_by_ctx(self, state_idx: int, ctx: int):\n"
      },
      {
        "path": "nodefusion/host/record.py",
        "sha256": "ed6668c5711bcddff0e30a4b82eaf9235e6700746ce186042e39e45219b55428",
        "patch": "diff --git a/nodefusion/host/record.py b/nodefusion/host/record.py\nindex ac7695e..93323e0 100644\n--- a/nodefusion/host/record.py\n+++ b/nodefusion/host/record.py\n@@ -399,6 +399,10 @@ class Recorder:\n                     f\"内核自己按顺序跑完所有应用，没有地方喂命令。\")\n \n \n+    @property\n+    def interactive_workload(self) -> bool:\n+        return self.profile.interactive and bool(self.cfg.program) and self.cfg.program != NO_PROGRAM\n+\n     def effective_lab_stage(self) -> int | None:\n         if self.cfg.lab_stage is not None:\n             return self.cfg.lab_stage\n@@ -445,8 +449,7 @@ class Recorder:\n                 f\"--no-build：这次没有编译，直接用了现成的 \"\n                 f\"{self.kernel_elf_path}（修改时间 \"\n                 f\"{mt.strftime('%Y-%m-%d %H:%M UTC')}）。\"\n-                \"也就是说**没人验证过这份二进制是当前源码编出来的**；\"\n-                \"它可能是任何时候留下的。ELF 指纹见 kernel_elf_identity。\")\n+                \"ELF 校验和见 kernel_elf_identity。\")\n             return \"(--no-build：跳过构建)\"\n \n         mv = self._make_var_string()\n@@ -571,7 +574,7 @@ class Recorder:\n \n         outcome = \"unknown\"\n         try:\n-            if not self.profile.interactive:\n+            if not self.interactive_workload:\n                 outcome = self._drive_headless(proc, reader)\n             else:\n                 outcome = self._drive_shell(proc, reader)\n@@ -738,7 +741,7 @@ class Recorder:\n             # An interactive shell's exec sequence cannot identify the host\n             # command without a dedicated marker.\n             prog_start = _program_start_from_trace(\n-                tr, wl_json, interactive=self.profile.interactive)\n+                tr, wl_json, interactive=self.interactive_workload)\n             tmp_trace.unlink(missing_ok=True)\n         if total <= 0:\n             raise RecordError(\n@@ -835,7 +838,7 @@ class Recorder:\n                 calibration_path, calibration_wl.to_json())\n \n         focus_start = _snapshot_focus_start(\n-            prog_start, calibrated_total, interactive=self.profile.interactive)\n+            prog_start, calibrated_total, interactive=self.interactive_workload)\n \n         if c.snap_insns is not None:\n             snap_insns = c.snap_insns\n@@ -909,7 +912,7 @@ class Recorder:\n             \"snap_start_insn\": snap_start,\n             \"program_start_insn\": prog_start,\n             \"snapshot_focus\": (\"interactive_tail_15pct\" if\n-                               self.profile.interactive and not prog_start and\n+                               self.interactive_workload and not prog_start and\n                                c.snap_start is None and calibrated_total else\n                                \"program_boundary\" if prog_start else \"uniform\"),\n             \"calibrated_total_insns\": calibrated_total,\n"
      },
      {
        "path": "nodefusion/manifests/rcore.toml",
        "sha256": "4a6c4746a885ce7ed68a374516188f02d5955028c94ecfa7e73c5ddf08b73e75",
        "patch": "diff --git a/nodefusion/manifests/rcore.toml b/nodefusion/manifests/rcore.toml\nindex 3579114..01e843c 100644\n--- a/nodefusion/manifests/rcore.toml\n+++ b/nodefusion/manifests/rcore.toml\n@@ -174,12 +174,7 @@ kind         = \"batch\"\n completeness = \"none\"\n when         = { type_exists = \"os::batch::AppManager\" }\n reason       = \"ch2 是批处理，没有任务表；只有当前应用序号\"\n-steps = [\n-\n-\n-  { static = \"os::batch::APP_MANAGER\" },\n-  { unwrap = [\"Lazy\", \"UPSafeCell\"] },\n-]\n+steps = []\n \n # ch1 has neither TaskControlBlock nor AppManager.  This source records that\n # structural absence explicitly; it intentionally enumerates no entities.\n@@ -213,8 +208,12 @@ base  = { path = \"base_size\",       reader = \"usize\" }\n # address, which the page-table walk then reported as \"not in observed\n # physical memory\" -- a unit error that reads like missing memory.\n # `.__0` rather than the tuple struct itself so no field offset is assumed.\n-pgtbl = { path = \"inner.memory_set.page_table.root_ppn.__0\", reader = \"ppn\", role = \"address_space_root\" }\n-prio  = { path = \"inner.priority\",  reader = \"usize\", role = \"priority\" }\n+pgtbl = { path = \"memory_set.page_table.root_ppn.__0\", reader = \"ppn\", role = \"address_space_root\" }\n+prio  = { path = \"inner.prio\",      reader = \"usize\", role = \"priority\" }\n+priority = { path = \"inner.priority\", reader = \"usize\", role = \"priority\" }\n+stride = { path = \"inner.stride\", reader = \"usize\" }\n+heap_bottom = { path = \"inner.heap_bottom\", reader = \"usize\" }\n+program_brk = { path = \"inner.program_brk\", reader = \"usize\" }\n \n \n \n@@ -223,7 +222,7 @@ exit  = { path = \"inner.exit_code\", reader = \"i32\", role = \"exit_code\" }\n \n \n \n-trapcx = { path = \"inner.trap_cx_ppn.__0\", reader = \"ppn\", role = \"trap_context\" }\n+trapcx = { path = \"trap_cx_ppn.__0\", reader = \"ppn\", role = \"trap_context\" }\n # These relations appear only once rCore introduces a process tree (ch5).\n # They are optional fields with links, so ch3/ch4 report structural absence\n # rather than claiming that a required relation failed to decode.\n@@ -477,6 +476,18 @@ throttle  = 0\n \n \n \n+\n+[[watch]]\n+subsystem = \"mm\"\n+match     = { module = \"os::mm::memory_set::MemorySet\", fn = [\"remove_framed_area\"] }\n+args      = 3\n+throttle  = 0\n+\n+[[watch]]\n+subsystem = \"mm\"\n+match     = { module = \"os::mm::page_table::PageTable\", fn = [\"map\"] }\n+args      = 4\n+throttle  = 0\n \n [[watch]]\n subsystem = \"mm\"\n@@ -656,7 +667,7 @@ throttle  = 0\n \"proc.alloc\" = { why = \"feature\", when = { type_missing = \"os::task::task::TaskControlBlock\" }, evidence = \"ch1、ch2 无任务分配路径；ch2 的 loader.c 复用同一应用内存区依次装入二进制，ch3 起引入 TaskControlBlock。\" }\n \"proc.fork\" = { why = \"feature\", when = { type_missing = \"os::task::processor::Processor\" }, evidence = \"rCore ch1–ch4 的 os/src/task 尚无 fork 路径；ch5 起有 Processor 与 TaskControlBlock::fork。按当前 ELF 的 Processor 类型核对阶段。\" }\n \"proc.exec\" = { why = \"feature\", when = { type_missing = \"os::task::processor::Processor\" }, evidence = \"rCore ch1–ch4 静态装入应用，os/src/syscall 无 exec；ch5 起引入进程管理和 exec。按当前 ELF 的 Processor 类型核对阶段。\" }\n-\"vm.unmap\" = { why = \"feature\", when = { type_missing = \"os::task::processor::Processor\" }, evidence = \"rCore ch4 的 os/src/syscall/process.rs 中 sys_munmap 明确为 NOT IMPLEMENTED YET；ch5 起有进程内存回收。按当前 ELF 的 Processor 类型区分阶段。\" }\n+\"vm.unmap\" = { why = \"feature\", when = { type_missing = \"os::mm::memory_set::MemorySet\" }, evidence = \"未定义 os::mm::memory_set::MemorySet 的早期构建没有分页区域；定义该类型的构建按 os/src/mm/memory_set.rs 中的区域取消映射路径检查，包括 2026A 的 remove_framed_area。\" }\n \"phys.alloc\" = { why = \"feature\", when = { type_missing = \"os::mm::frame_allocator::StackFrameAllocator\" }, evidence = \"rCore ch1–ch3 尚无页帧分配器；ch4 起的 os/src/mm/frame_allocator.rs 定义 StackFrameAllocator。按当前 ELF 的该类型核对阶段。\" }\n \"phys.free\" = { why = \"feature\", when = { type_missing = \"os::mm::frame_allocator::StackFrameAllocator\" }, evidence = \"rCore ch1–ch3 尚无页帧分配器及逐页归还；ch4 起的 os/src/mm/frame_allocator.rs 实现分配与回收。按当前 ELF 的类型核对阶段。\" }\n \"vm.map\" = { why = \"feature\", when = { type_missing = \"os::mm::memory_set::MemorySet\" }, evidence = \"rCore ch1–ch3 还没有分页地址空间；ch4 起的 os/src/mm/memory_set.rs 定义 MemorySet 并建立区域映射。按当前 ELF 的类型核对阶段。\" }\n@@ -828,7 +839,7 @@ throttle  = 0\n \n \"os::mm::frame_allocator::frame_dealloc\" = \"phys.free\"\n \"os::mm::frame_allocator::frame_alloc\" = \"phys.alloc\"\n-\"os::mm::page_table::PageTable::map\" = \"pagetable.map\"\n+\"os::mm::page_table::PageTable::map\" = { kind = \"pagetable.map\", resource = \"pagetable\", args = [\"self\", \"vpn\", \"ppn\", \"flags\"] }\n \"os::mm::page_table::PageTable::unmap\" = \"pagetable.unmap\"\n \"os::mm::page_table::PageTable::new\" = \"pagetable.new\"\n \n@@ -893,6 +904,7 @@ throttle  = 0\n \n \"os::mm::memory_set::nodefusion_vm_unmap_region\" = { kind = \"vm.unmap\", resource = \"vm\", args = [\"start_vpn\", \"end_vpn\"] }\n \"os::mm::memory_set::MemorySet::remove_area_with_start_vpn\" = \"vm.remove_area\"\n+\"os::mm::memory_set::MemorySet::remove_framed_area\" = { kind = \"vm.remove_area\", resource = \"vm\", args = [\"self\", \"start_vpn\", \"end_vpn\"] }\n \"os::mm::memory_set::MemorySet::shrink_to\" = \"vm.shrink\"\n \"os::mm::memory_set::MemorySet::append_to\" = \"vm.grow\"\n \"os::mm::init\" = \"vm.init\"\n@@ -1550,3 +1562,35 @@ opts = [\n [syscalls]\n files   = [\"os/src/syscall/mod.rs\"]\n pattern = 'const\\s+SYSCALL_(?P<name>\\w+)\\s*:\\s*usize\\s*=\\s*(?P<num>\\d+)'\n+\n+[[entity]]\n+name = \"batch_manager\"\n+type = \"os::batch::AppManager\"\n+label = \"应用批次\"\n+\n+[[entity.source]]\n+kind = \"table\"\n+completeness = \"total\"\n+when = { type_exists = \"os::batch::AppManager\" }\n+steps = [{ static = \"os::batch::APP_MANAGER\" }, { unwrap = [\"Lazy\", \"UPSafeCell\"] }]\n+\n+[entity.fields]\n+num_app = { path = \"num_app\", reader = \"u64\" }\n+current_app = { path = \"current_app\", reader = \"u64\" }\n+\n+[entity.table]\n+empty = \"当前没有应用批次。\"\n+  [[entity.table.column]]\n+  key = \"num_app\"\n+  label = \"应用数\"\n+  [[entity.table.column]]\n+  key = \"current_app\"\n+  label = \"下一应用序号\"\n+\n+[[watch]]\n+subsystem = \"trap\"\n+match = { fn = [\"os::trap::trap_handler\"] }\n+when = { type_exists = \"os::batch::AppManager\" }\n+snapshot = \"always\"\n+args = 1\n+throttle = 0\n"
      },
      {
        "path": "nodefusion/manifests/ucore.toml",
        "sha256": "7ca738a5abfb1c21afdb75b44c2fc0ce81b19d3d2db9aa3d820850b8abf74327",
        "patch": "diff --git a/nodefusion/manifests/ucore.toml b/nodefusion/manifests/ucore.toml\nindex 4312842..750f358 100644\n--- a/nodefusion/manifests/ucore.toml\n+++ b/nodefusion/manifests/ucore.toml\n@@ -33,17 +33,29 @@ steps = [\n   { iter = \"array\" },\n ]\n \n+[[entity.source]]\n+kind = \"batch\"\n+completeness = \"none\"\n+when = { all = [{ type_missing = \"proc\" }, { symbol_exists = \"clean_bss\" }, { symbol_missing = \"pool\" }, { symbol_missing = \"allocproc\" }, { symbol_missing = \"scheduler\" }] }\n+steps = []\n+\n [entity.liveness]\n-skip_when = { field = \"state\", equals = \"P_UNUSED\" }\n+skip_when = { field = \"state\", one_of = [\"UNUSED\", \"P_UNUSED\"] }\n \n [entity.fields]\n pid         = { path = \"pid\",         reader = \"i32\",  role = \"id\" }\n state       = { path = \"state\",       reader = \"enum\", enum = \"procstate\", role = \"state\" }\n \n [entity.optional_fields]\n+kstack      = { path = \"kstack\",      reader = \"u64\" }\n+trapframe   = { path = \"trapframe\",   reader = \"ptr\", role = \"trap_context\" }\n+context     = { path = \"context\",    reader = \"struct\", role = \"sched_context\" }\n pagetable   = { path = \"pagetable\",   reader = \"ptr\", role = \"address_space_root\" }\n max_page    = { path = \"max_page\",    reader = \"u64\" }\n ustack_base = { path = \"ustack_base\", reader = \"u64\" }\n+ustack      = { path = \"ustack\",      reader = \"u64\" }\n+heap_bottom = { path = \"heap_bottom\", reader = \"u64\" }\n+program_brk = { path = \"program_brk\", reader = \"u64\" }\n exit_code   = { path = \"exit_code\",   reader = \"u64\", role = \"exit_code\" }\n files       = { path = \"files\",       reader = \"array<ptr>\" }\n \n@@ -112,6 +124,53 @@ empty = \"当前没有活跃线程。\"\n \n # -------------------------------------------------------------- resources\n \n+[[entity]]\n+name = \"batch_context\"\n+type = \"trapframe\"\n+label = \"用户上下文\"\n+\n+[[entity.source]]\n+kind = \"table\"\n+completeness = \"total\"\n+when = { all = [{ type_exists = \"trapframe\" }, { symbol_exists = \"trap_page\" }, { symbol_missing = \"pool\" }] }\n+steps = [{ static = \"trap_page\" }]\n+\n+[[entity.source]]\n+kind = \"batch\"\n+completeness = \"none\"\n+when = { all = [{ type_exists = \"proc\" }, { symbol_exists = \"pool\" }, { symbol_missing = \"trap_page\" }] }\n+steps = []\n+\n+[entity.fields]\n+epc = { path = \"epc\", reader = \"u64\" }\n+user_sp = { path = \"sp\", reader = \"u64\" }\n+kernel_sp = { path = \"kernel_sp\", reader = \"u64\" }\n+a0 = { path = \"a0\", reader = \"u64\" }\n+a1 = { path = \"a1\", reader = \"u64\" }\n+a2 = { path = \"a2\", reader = \"u64\" }\n+a7 = { path = \"a7\", reader = \"u64\" }\n+\n+[entity.table]\n+empty = \"本构建没有独立的批处理上下文。\"\n+  [[entity.table.column]]\n+  key = \"epc\"\n+  label = \"返回地址\"\n+  format = \"hex\"\n+  [[entity.table.column]]\n+  key = \"user_sp\"\n+  label = \"用户栈\"\n+  format = \"hex\"\n+  [[entity.table.column]]\n+  key = \"kernel_sp\"\n+  label = \"内核栈\"\n+  format = \"hex\"\n+  [[entity.table.column]]\n+  key = \"a7\"\n+  label = \"a7\"\n+  [[entity.table.column]]\n+  key = \"a0\"\n+  label = \"a0\"\n+\n [[entity]]\n name  = \"bcache\"\n type  = \"buf\"\n@@ -264,12 +323,20 @@ empty = \"当前没有活跃 inode。\"\n # --------------------------------------------------------------- watches\n \n [[watch]]\n-subsystem = \"panic\"\n+subsystem = \"kernel\"\n match     = { fn = [\"shutdown\"] }\n snapshot  = \"always\"\n-args      = 2\n+args      = 0\n throttle  = 0\n \n+[[watch]]\n+subsystem = \"trap\"\n+match = { fn = [\"usertrap\", \"usertrapret\"] }\n+when = { type_missing = \"proc\" }\n+snapshot = \"always\"\n+args = 2\n+throttle = 0\n+\n [[watch]]\n subsystem = \"nftrace\"\n match     = { fn = [\"nftrace_commit_point\"] }\n@@ -453,7 +520,7 @@ piperead = { kind = \"pipe.read\", resource = \"pipe\" }\n pipewrite = { kind = \"pipe.write\", resource = \"pipe\" }\n pipeclose = { kind = \"pipe.close\", resource = \"pipe\" }\n \n-shutdown = { kind = \"kernel.panic\", args = [\"reason\"] }\n+shutdown = { kind = \"kernel.shutdown\" }\n \n # ----------------------------------------------------------------- profile\n \n@@ -471,12 +538,11 @@ machine_opts = [\n ]\n interactive = true\n prompt = \">> \"\n-ready_markers = [\"C user shell\"]\n-# User-space assertions deliberately print the same ``[PANIC ...]`` prefix as\n-# the kernel logger and then return a non-zero test status.  Treating that text\n-# as a kernel panic truncates aggregate suites halfway through; the shell's\n-# exit line and QEMU termination provide unambiguous outcomes instead.\n-panic_markers = [\"core dumped\"]\n+ready_markers = [\"hello wrold!\", \"C user shell\", \"start scheduler!\"]\n+done_markers = [\"ALL DONE\", \"all app are over!\", \"all apps over\"]\n+# User faults and assertions share the kernel's diagnostic text. Completion\n+# markers, process exit lines and QEMU termination determine the outcome.\n+panic_markers = []\n halt_markers = []\n stdin_preload = true\n stdin_pad = \"\\n\"\n"
      },
      {
        "path": "nodefusion/model/dwarfsrc.py",
        "sha256": "02688f5f8419ba6c8fd64ea4f347929f74c8b70299b632223c5535bab298f265",
        "patch": "diff --git a/nodefusion/model/dwarfsrc.py b/nodefusion/model/dwarfsrc.py\nindex 6716ea1..2dd0640 100644\n--- a/nodefusion/model/dwarfsrc.py\n+++ b/nodefusion/model/dwarfsrc.py\n@@ -99,6 +99,10 @@ class DwarfSource:\n         if not elf.has_dwarf_info():\n             raise RuntimeError(f\"{self.path} 里没有调试信息（.debug_info）\")\n         self.e_machine = elf.header[\"e_machine\"]\n+        symtab = elf.get_section_by_name('.symtab')\n+        self.defined_symbols = (None if symtab is None else\n+                                {s.name for s in symtab.iter_symbols()\n+                                 if s.name and s['st_shndx'] != 'SHN_UNDEF'})\n         self._exec_ranges = self._exec_sections(elf)\n         self._parse(elf.get_dwarf_info())\n         self._index_short()\n"
      },
      {
        "path": "nodefusion/model/kinds.py",
        "sha256": "0432ef9f134654bc36554ec55afcb9f91c593110cdacf0a58d0ac4d1d05ac569",
        "patch": "diff --git a/nodefusion/model/kinds.py b/nodefusion/model/kinds.py\nindex c9da0ea..5551612 100644\n--- a/nodefusion/model/kinds.py\n+++ b/nodefusion/model/kinds.py\n@@ -17,7 +17,7 @@ KINDS: frozenset[str] = frozenset({\n     \"inode.write\",\n     \"interrupt.clock\", \"interrupt.dispatch\", \"interrupt.external\",\n     \"interrupt.other\", \"interrupt.software\", \"interrupt.timer\",\n-    \"kernel.alloc_error\", \"kernel.panic\",\n+    \"kernel.alloc_error\", \"kernel.panic\", \"kernel.shutdown\",\n     \"log.begin\", \"log.commit\", \"log.end\", \"log.install\", \"log.recover\",\n     \"log.write\", \"log.write_blocks\",\n     \"pagetable.freewalk\", \"pagetable.map\", \"pagetable.new\", \"pagetable.unmap\",\n"
      },
      {
        "path": "nodefusion/model/resolve.py",
        "sha256": "0c588760d0ec6494617007b02d786285ba190593935f574f6c53b99ad62ac8c0",
        "patch": "diff --git a/nodefusion/model/resolve.py b/nodefusion/model/resolve.py\nindex 5c9b606..a655199 100644\n--- a/nodefusion/model/resolve.py\n+++ b/nodefusion/model/resolve.py\n@@ -127,6 +127,24 @@ def resolve_path(dw: DwarfSource, start: StructLayout, path: str,\n def eval_when(dw: DwarfSource, pred: dict | None) -> tuple[bool, str]:\n     if not pred:\n         return True, \"无条件\"\n+    if not isinstance(pred, dict) or len(pred) != 1:\n+        return False, \"when 需要一种谓词\"\n+    if 'all' in pred:\n+        children = pred['all']\n+        if not isinstance(children, list) or not children or any(not isinstance(p, dict) or not p for p in children):\n+            return False, \"all 需要非空的谓词数组\"\n+        results = [eval_when(dw, child) for child in children]\n+        return all(hit for hit, _ in results), '；'.join(reason for _, reason in results)\n+    if 'symbol_exists' in pred or 'symbol_missing' in pred:\n+        key = next(iter(pred))\n+        name = pred[key]\n+        if not isinstance(name, str) or not name.strip():\n+            return False, \"符号名不能为空\"\n+        symbols = getattr(dw, 'defined_symbols', None)\n+        if symbols is None:\n+            return False, \"没有完整 ELF 符号表\"\n+        exists = name in symbols\n+        return (exists if key == 'symbol_exists' else not exists), f\"符号 {name} {'在' if exists else '不在'}\"\n \n     if \"type_exists\" in pred:\n         want = pred[\"type_exists\"]\n"
      },
      {
        "path": "nodefusion/model/snapshot.py",
        "sha256": "e9c4ce76b858a9003e43d9eec363e1b88d4024338c3401b7a47a9871fe5dab7a",
        "patch": "diff --git a/nodefusion/model/snapshot.py b/nodefusion/model/snapshot.py\nindex fa095ef..0bf7cb7 100644\n--- a/nodefusion/model/snapshot.py\n+++ b/nodefusion/model/snapshot.py\n@@ -68,6 +68,8 @@ def is_live(entity: Entity, liveness: dict | None) -> bool:\n         return True\n     if \"equals\" in sw:\n         return f.value != sw[\"equals\"]\n+    if \"one_of\" in sw:\n+        return f.value not in sw[\"one_of\"]\n     return True\n \n \n"
      },
      {
        "path": "nodefusion/host/bundle.py",
        "sha256": "f6117f48b073e117dc0ffa6cdf1af4984d173b3a8f16808730e3746b51c2ad33",
        "patch": "diff --git a/nodefusion/host/bundle.py b/nodefusion/host/bundle.py\nindex a31f11f..4a3967a 100644\n--- a/nodefusion/host/bundle.py\n+++ b/nodefusion/host/bundle.py\n@@ -15,6 +15,7 @@ from .analyze import Analysis\n MAX_EVENTS = 150_000\n \n MIN_SPARE_EVENTS = 25_000\n+MIN_KIND_EVENTS = 64\n \n DIAGNOSTIC_PREFIXES = (\"func.\",)\n \n@@ -57,6 +58,25 @@ class Interner:\n         return i\n \n \n+def _kind_budgets(counts: dict[str, int], budget: int) -> tuple[dict[str, int], int]:\n+    if not counts:\n+        return {}, 0\n+    floor = min(MIN_KIND_EVENTS, budget // len(counts))\n+    if floor == 0:\n+        return {kind: int(index < budget) for index, kind in enumerate(counts)}, 0\n+    quotas = {kind: min(count, floor) for kind, count in counts.items()}\n+    remaining = budget - sum(quotas.values())\n+    residual_total = sum(counts.values()) - sum(quotas.values())\n+    cumulative = 0\n+    if residual_total:\n+        for kind, count in counts.items():\n+            residual = count - quotas[kind]\n+            quotas[kind] += ((cumulative + residual) * remaining // residual_total\n+                             - cumulative * remaining // residual_total)\n+            cumulative += residual\n+    return quotas, floor\n+\n+\n def _event_selection(events: list, *, materialize: bool) -> tuple[list, dict]:\n     \"\"\"Bound the interactive event stream while auditing the full raw trace.\"\"\"\n     raw_kinds = Counter(e.kind for e in events)\n@@ -65,7 +85,7 @@ def _event_selection(events: list, *, materialize: bool) -> tuple[list, dict]:\n     if len(events) <= MAX_EVENTS:\n         return (events if materialize else []), {\n             \"applied\": False,\n-            \"policy\": \"kind-preserving/systematic-v3\",\n+            \"policy\": \"kind-preserving/systematic-v5\",\n             \"raw\": len(events), \"retained\": len(events), \"dropped\": 0,\n             \"target_limit\": MAX_EVENTS, \"minimum_spare\": MIN_SPARE_EVENTS,\n             \"always_keep\": \"all events when the raw stream fits\",\n@@ -77,37 +97,32 @@ def _event_selection(events: list, *, materialize: bool) -> tuple[list, dict]:\n         }\n \n     spare_raw = len(events) - priority_raw\n-    semantic_kinds = {k for k in raw_kinds if _is_semantic(k)}\n-    reserved_spare = min(MIN_SPARE_EVENTS, spare_raw)\n+    semantic_counts = {k: count for k, count in raw_kinds.items() if _is_semantic(k)}\n+    reserved_spare = min(MIN_SPARE_EVENTS, spare_raw, MAX_EVENTS)\n     priority_budget = min(priority_raw, MAX_EVENTS - reserved_spare)\n+    quotas, kind_floor = _kind_budgets(semantic_counts, priority_budget)\n     room = MAX_EVENTS - priority_budget\n-    step = max(1, spare_raw // room) if room > 0 and spare_raw else 1\n+    diagnostic_counts = {k: count for k, count in raw_kinds.items() if not _is_semantic(k)}\n+    diagnostic_quotas, diagnostic_floor = _kind_budgets(diagnostic_counts, min(room, spare_raw))\n+    quotas.update(diagnostic_quotas)\n     chosen: list = []\n     retained_kinds: Counter = Counter()\n     dropped_kinds: dict[str, int] = {}\n-    spare_seen = 0\n-    spare_kept = 0\n     semantic_seen = 0\n-    first_kinds: set[str] = set()\n-    nonfirst_seen = 0\n-    nonfirst_total = priority_raw - len(semantic_kinds)\n-    nonfirst_budget = max(0, priority_budget - len(semantic_kinds))\n+    seen_by_kind: Counter = Counter()\n     for e in events:\n         if _is_semantic(e.kind):\n             semantic_seen += 1\n-            if e.kind not in first_kinds:\n-                first_kinds.add(e.kind)\n-                retain = len(first_kinds) <= priority_budget\n-            else:\n-                retain = (nonfirst_total > 0 and\n-                          (nonfirst_seen + 1) * nonfirst_budget // nonfirst_total\n-                          > nonfirst_seen * nonfirst_budget // nonfirst_total)\n-                nonfirst_seen += 1\n+        seen = seen_by_kind[e.kind]\n+        seen_by_kind[e.kind] += 1\n+        quota = quotas[e.kind]\n+        total = raw_kinds[e.kind]\n+        if seen == 0:\n+            retain = quota > 0\n         else:\n-            retain = room > 0 and spare_kept < room and spare_seen % step == 0\n-            spare_seen += 1\n-            if retain:\n-                spare_kept += 1\n+            retain = (quota > 1 and\n+                      seen * (quota - 1) // (total - 1)\n+                      > (seen - 1) * (quota - 1) // (total - 1))\n         if retain:\n             retained_kinds[e.kind] += 1\n             if materialize:\n@@ -120,15 +135,19 @@ def _event_selection(events: list, *, materialize: bool) -> tuple[list, dict]:\n \n     return chosen, {\n         \"applied\": True,\n-        \"policy\": \"kind-preserving/systematic-v3\",\n+        \"policy\": \"kind-preserving/systematic-v5\",\n         \"raw\": len(events), \"retained\": retained, \"dropped\": dropped,\n         \"target_limit\": MAX_EVENTS, \"minimum_spare\": MIN_SPARE_EVENTS,\n-        \"always_keep\": \"first event of each normalized kind within budget\",\n+        \"always_keep\": \"all events of kinds whose count fits their per-kind budget\",\n         \"priority_raw\": priority_raw, \"spare_raw\": spare_raw,\n         \"semantic_budget\": priority_budget,\n+        \"minimum_per_kind\": kind_floor,\n+        \"semantic_kind_budgets\": {k: quotas[k] for k in sorted(semantic_counts)},\n+        \"diagnostic_kind_budgets\": dict(sorted(diagnostic_quotas.items())),\n+        \"minimum_per_diagnostic_kind\": diagnostic_floor,\n         \"semantic_retained\": semantic_seen - sum(v for k, v in dropped_kinds.items()\n                                                 if _is_semantic(k)),\n-        \"spare_budget\": room, \"stride\": step if room > 0 and spare_raw else None,\n+        \"spare_budget\": room, \"stride\": None,\n         \"retained_kinds\": dict(sorted(retained_kinds.items())),\n         \"dropped_kinds\": dict(sorted(dropped_kinds.items())),\n     }\n"
      },
      {
        "path": "nodefusion/tests/test_bundle_shape.py",
        "sha256": "34d227f2726d1820160288b225243b51fe3583839ff52ee245a814eb1c27f81d",
        "patch": "diff --git a/nodefusion/tests/test_bundle_shape.py b/nodefusion/tests/test_bundle_shape.py\nindex 40bd9fe..025791a 100644\n--- a/nodefusion/tests/test_bundle_shape.py\n+++ b/nodefusion/tests/test_bundle_shape.py\n@@ -1,5 +1,6 @@\n \n import sys\n+from collections import Counter\n from pathlib import Path\n from types import SimpleNamespace as NS\n \n@@ -144,7 +145,8 @@ def test_event_selection_metadata_accounts_for_every_raw_event(monkeypatch):\n     assert audit[\"priority_raw\"] == 4\n     assert audit[\"spare_raw\"] == 26\n     assert audit[\"spare_budget\"] == 6\n-    assert audit[\"stride\"] == 4\n+    assert audit[\"stride\"] is None\n+    assert audit['diagnostic_kind_budgets'] == {'func.hot_path': 6}\n     assert sum(audit[\"retained_kinds\"].values()) == audit[\"retained\"]\n     assert sum(audit[\"dropped_kinds\"].values()) == audit[\"dropped\"]\n     assert [e.insn for e in selected[:4]] == [0, 1, 2, 3]\n@@ -156,10 +158,9 @@ def test_bounded_selector_preserves_order_and_systematic_sample(monkeypatch):\n     events = [NS(kind=(\"proc.fork\" if i in {2, 7} else \"func.hot\"), insn=i)\n               for i in range(12)]\n     selected, audit = B._select_events(events)\n-    # Ten diagnostics, four spare slots => old spare[::2][:4], interleaved\n-    # with both semantic events in original timeline order.\n-    assert [event.insn for event in selected] == [0, 2, 3, 5, 7, 8]\n-    assert audit[\"stride\"] == 2\n+    # Four per-kind positions include the first and last diagnostic entries.\n+    assert [event.insn for event in selected] == [0, 2, 4, 7, 8, 11]\n+    assert audit[\"stride\"] is None\n     assert audit[\"retained\"] == 6\n \n \n@@ -178,6 +179,79 @@ def test_large_semantic_stream_stays_browser_bounded(monkeypatch):\n     assert audit[\"raw\"] == audit[\"retained\"] + audit[\"dropped\"]\n \n \n+def test_rare_semantic_events_survive_hot_kinds_without_kernel_allowlists(monkeypatch):\n+    monkeypatch.setattr(B, 'MAX_EVENTS', 200)\n+    monkeypatch.setattr(B, 'MIN_SPARE_EVENTS', 25)\n+    events = [NS(kind='pagetable.map', insn=i) for i in range(5000)]\n+    events += [NS(kind='future_namespace.branch', insn=5000 + i) for i in range(13)]\n+    events += [NS(kind='trap.page_fault', insn=5013 + i) for i in range(4)]\n+    events += [NS(kind='func.loop', insn=5017 + i) for i in range(1000)]\n+    selected, audit = B._select_events(events)\n+    assert len(selected) == audit['retained'] == 200\n+    assert audit['retained_kinds']['future_namespace.branch'] == 13\n+    assert audit['retained_kinds']['trap.page_fault'] == 4\n+    assert audit['retained_kinds']['func.loop'] == 25\n+    assert audit['semantic_retained'] == 175\n+    assert audit['semantic_kind_budgets']['pagetable.map'] == 158\n+    hot = [item.insn for item in selected if item.kind == 'pagetable.map']\n+    assert hot[0] == 0 and hot[-1] == 4999\n+    assert [item.insn for item in selected] == sorted(item.insn for item in selected)\n+    assert B._select_events(events)[0] == selected\n+    empty, accounting = B._event_selection(events, materialize=False)\n+    assert empty == [] and accounting == audit\n+    for kind, count in Counter(item.kind for item in events).items():\n+        assert audit['retained_kinds'].get(kind, 0) + audit['dropped_kinds'].get(kind, 0) == count\n+\n+\n+def test_more_semantic_kinds_than_slots_is_still_bounded(monkeypatch):\n+    monkeypatch.setattr(B, 'MAX_EVENTS', 7)\n+    monkeypatch.setattr(B, 'MIN_SPARE_EVENTS', 2)\n+    events = [NS(kind=f'new.kind{i}', insn=i) for i in range(20)]\n+    events += [NS(kind='func.noise', insn=20 + i) for i in range(20)]\n+    selected, audit = B._select_events(events)\n+    assert len(selected) == 7\n+    assert audit['semantic_retained'] == 5 and audit['retained_kinds']['func.noise'] == 2\n+    assert sum(audit['semantic_kind_budgets'].values()) == 5\n+    assert [item.kind for item in selected[:5]] == [f'new.kind{i}' for i in range(5)]\n+    assert sum(audit['dropped_kinds'].values()) == 33\n+    assert B._event_selection(events, materialize=False)[1] == audit\n+\n+\n+def test_rare_function_entries_survive_hot_diagnostic_functions(monkeypatch):\n+    monkeypatch.setattr(B, 'MAX_EVENTS', 100)\n+    monkeypatch.setattr(B, 'MIN_SPARE_EVENTS', 25)\n+    events = [NS(kind='syscall.enter', insn=i) for i in range(1000)]\n+    events += [NS(kind='func.format', insn=1000 + i) for i in range(2000)]\n+    events += [NS(kind='func.unmap', insn=3000 + i) for i in range(2)]\n+    selected, audit = B._select_events(events)\n+    assert len(selected) == 100\n+    assert audit['retained_kinds']['func.unmap'] == 2\n+    assert audit['retained_kinds']['func.format'] == 23\n+    assert not audit['dropped_kinds'].get('func.unmap')\n+    assert selected[-1] is events[-1]\n+\n+\n+def test_kind_quotas_use_the_budget_without_exceeding_raw_counts():\n+    for counts in [{'one': 1}, {'a': 2, 'b': 1000, 'c': 9},\n+                   {str(index): index + 1 for index in range(100)}]:\n+        total = sum(counts.values())\n+        for budget in range(min(total, 300) + 1):\n+            quotas, floor = B._kind_budgets(counts, budget)\n+            assert sum(quotas.values()) == budget\n+            assert all(0 <= quotas[kind] <= count for kind, count in counts.items())\n+            assert all(quotas[kind] == count for kind, count in counts.items() if count <= floor)\n+\n+\n+def test_diagnostic_reservation_cannot_exceed_total_budget(monkeypatch):\n+    monkeypatch.setattr(B, 'MAX_EVENTS', 4)\n+    monkeypatch.setattr(B, 'MIN_SPARE_EVENTS', 25)\n+    events = [NS(kind='syscall.enter', insn=0)]\n+    events += [NS(kind='func.hot', insn=i) for i in range(1, 30)]\n+    selected, audit = B._select_events(events)\n+    assert len(selected) == 4 and audit['semantic_budget'] == 0\n+    assert audit['dropped_kinds']['syscall.enter'] == 1\n+\n+\n def test_interactive_sampling_does_not_erase_raw_semantic_coverage(monkeypatch):\n     monkeypatch.setattr(B, \"MAX_EVENTS\", 10)\n     monkeypatch.setattr(B, \"MIN_SPARE_EVENTS\", 3)\n"
      },
      {
        "path": "nodefusion/tests/test_kernel_integrations.py",
        "sha256": "8e3ecdcf6ad5ea3b7fa44a3e3244a2c9678255b62c02d8cd48de9cfc1189b376",
        "patch": "diff --git a/nodefusion/tests/test_kernel_integrations.py b/nodefusion/tests/test_kernel_integrations.py\nindex a285e88..b33e6b0 100644\n--- a/nodefusion/tests/test_kernel_integrations.py\n+++ b/nodefusion/tests/test_kernel_integrations.py\n@@ -64,7 +64,7 @@ def test_rcore_patch_and_manifest_agree_on_the_per_region_hook():\n     assert manifest.events[symbol].kind == \"vm.unmap\"\n     assert manifest.events[symbol].args == [\"start_vpn\", \"end_vpn\"]\n     assert manifest.absent[\"vm.unmap\"].when == {\n-        \"type_missing\": \"os::task::processor::Processor\"}\n+        \"type_missing\": \"os::mm::memory_set::MemorySet\"}\n \n \n def test_rcore_patch_exports_exact_physical_allocation_results():\n@@ -79,6 +79,38 @@ def test_rcore_patch_exports_exact_physical_allocation_results():\n     assert \"nodefusion_trace_sched_switch\" in patch\n \n \n+def test_rcore_reference_region_removal_is_an_attempt_not_a_success_event():\n+    manifest = load(ROOT / 'manifests/rcore.toml')\n+    symbol = 'os::mm::memory_set::MemorySet::remove_framed_area'\n+    assert manifest.events[symbol].kind == 'vm.remove_area'\n+    assert manifest.events[symbol].args == ['self', 'start_vpn', 'end_vpn']\n+    dedicated = next(index for index, watch in enumerate(manifest.watches)\n+                     if watch.match.get('fn') == ['remove_framed_area'])\n+    inline = next(index for index, watch in enumerate(manifest.watches)\n+                  if watch.match.get('fn') == ['frame_alloc', 'frame_dealloc', 'unmap', 'init_heap'])\n+    assert dedicated < inline\n+    assert manifest.watches[dedicated].args == 3\n+    assert not manifest.watches[dedicated].inlined\n+\n+\n+def test_rcore_2026a_ch4_observation_patch_preserves_region_acceptance():\n+    patch = (INTEGRATIONS / 'rcore-2026a-ch4-observation.patch').read_text()\n+    assert patch.index('})?;') < patch.index('nodefusion_vm_unmap_region(start.0, end.0);')\n+    assert patch.index('nodefusion_vm_unmap_region(start.0, end.0);') < patch.index('let mut area = self.areas.remove(index);')\n+    assert 'const NFT_ALLOCATOR_STATE: u64 = 6;' in patch\n+    assert 'a: [free_pages as u64, used_pages as u64, 0, 0]' in patch\n+    assert 'nodefusion_trace_page(NFT_KALLOC, paddr, free_pages, used_pages)' in patch\n+    assert 'nodefusion_trace_page(NFT_KFREE, PhysAddr::from(ppn).0, free_pages, used_pages)' in patch\n+    assert 'GlobalAlloc::alloc(&self.0, layout)' in patch\n+    assert 'GlobalAlloc::dealloc(&self.0, ptr, layout)' in patch\n+    manifest = load(ROOT / 'manifests/rcore.toml')\n+    event = manifest.events['os::mm::page_table::PageTable::map']\n+    assert event.kind == 'pagetable.map' and event.args == ['self', 'vpn', 'ppn', 'flags']\n+    rule = next(watch for watch in manifest.watches\n+                if watch.match == {'module': 'os::mm::page_table::PageTable', 'fn': ['map']})\n+    assert rule.args == 4 and not rule.inlined\n+\n+\n def test_rcore_chapter_patches_preserve_per_region_and_scheduler_identity():\n     for chapter in (6, 8):\n         patch = (INTEGRATIONS / f\"rcore-ch{chapter}-nodefusion.patch\").read_text(\n@@ -94,6 +126,43 @@ def test_rcore_chapter_patches_preserve_per_region_and_scheduler_identity():\n     assert \"block_current_and_run_next\" in ch8\n \n \n+def test_2026a_ch5_observation_preserves_allocator_and_switch_semantics():\n+    rust = (INTEGRATIONS / 'rcore-2026a-ch5-observation.patch').read_text()\n+    c = (INTEGRATIONS / 'ucore-2026a-ch5-observation.patch').read_text()\n+    for patch in (rust, c):\n+        assert 'nftrace_commit_point' in patch\n+        assert 'nodefusion_pagetable_map' in patch or '#[inline(never)]' in patch\n+    assert 'self.allocated -= 1;' in rust\n+    assert 'self.allocated += 1;' in rust\n+    assert 'if result.is_some()' in rust\n+    assert 'frame.as_ref().map_or(0, |frame| PhysAddr::from(frame.ppn).0)' in rust\n+    assert 'pub(crate) const NO_TASK: usize = usize::MAX;' in rust\n+    assert 'emit(4, [from_task as u64, to_task as u64, from_pid as u64, to_pid as u64])' in rust\n+    assert 'crate::nftrace::NO_TASK, next_pid' in rust\n+    assert 'crate::nftrace::sched_switch(task_id, idle, pid, crate::nftrace::NO_TASK)' in rust\n+    assert rust.index('add_task(new_task);') < rust.index('crate::nftrace::process_fork(current_task.getpid(), new_pid);')\n+    assert 'nf_used_pages--;' in c\n+    assert 'nf_used_pages++;' in c\n+    assert c.index('nf_used_pages--;') < c.index('nftrace_page_free((uint64)pa, nf_free_pages, nf_used_pages);')\n+    assert c.index('add_task(np);') < c.index('nftrace_proc_fork(p->pid, np->pid);')\n+    assert 'nftrace_sched_switch((uint64)&idle, (uint64)p, (uint64)-1, p->pid);' in c\n+    assert 'nftrace_sched_switch((uint64)p, (uint64)&idle, p->pid, (uint64)-1);' in c\n+    assert c.index('*pte = PA2PTE(pa) | perm | PTE_V;') < c.index('nodefusion_pagetable_map(a, pa, perm | PTE_V);')\n+\n+\n+def test_rcore_2026a_ch5_region_hooks_only_describe_explicit_pte_removal():\n+    patch = (INTEGRATIONS / 'rcore-2026a-ch5-observation.patch').read_text()\n+    assert 'if mapped_end > area.vpn_range.get_start()' in patch\n+    assert 'nodefusion_vm_unmap_region(area.vpn_range.get_start().0, mapped_end.0);' in patch\n+    assert 'if self.vpn_range.get_start() < self.vpn_range.get_end()' in patch\n+    assert 'nodefusion_vm_unmap_region(self.vpn_range.get_start().0, self.vpn_range.get_end().0);' in patch\n+    assert 'if new_end < self.vpn_range.get_end()' in patch\n+    assert 'nodefusion_vm_unmap_region(new_end.0, self.vpn_range.get_end().0);' in patch\n+    # Releasing data-frame ownership on exit leaves the zombie page table alive.\n+    # Do not invent explicit PTE-removal events for that separate operation.\n+    assert 'self.areas.clear();' not in patch\n+\n+\n def test_rcore_ch8_keeps_applicable_vm_and_signal_watchpoints_callable():\n     patch = (INTEGRATIONS / \"rcore-page-table-observation-points.patch\").read_text()\n     assert patch.count(\"#[inline(never)]\") == 6\n@@ -161,7 +230,7 @@ def test_rcore_filesystem_absence_depends_on_the_resolved_build(monkeypatch):\n             (\"proc.alloc\", \"os::task::task::TaskControlBlock\"),\n             (\"proc.fork\", \"os::task::processor::Processor\"),\n             (\"proc.exec\", \"os::task::processor::Processor\"),\n-            (\"vm.unmap\", \"os::task::processor::Processor\"),\n+            (\"vm.unmap\", \"os::mm::memory_set::MemorySet\"),\n             (\"phys.alloc\", \"os::mm::frame_allocator::StackFrameAllocator\"),\n             (\"phys.free\", \"os::mm::frame_allocator::StackFrameAllocator\"),\n             (\"vm.map\", \"os::mm::memory_set::MemorySet\"),\n@@ -189,6 +258,28 @@ def test_ucore_patch_and_manifest_supply_exact_semantics():\n     assert manifest.absent[\"log.commit\"].why == \"feature\"\n \n \n+def test_ucore_2026a_ch4_patch_observes_allocator_results_and_committed_ptes():\n+    patch = (INTEGRATIONS / 'ucore-2026a-ch4-observation.patch').read_text()\n+    paths = [line.split(' b/', 1)[1] for line in patch.splitlines() if line.startswith('diff --git ')]\n+    assert set(paths) == {'os/kalloc.c', 'os/vm.c', 'os/nftrace.c', 'os/nftrace.h'}\n+    assert 'NFT_KALLOC = 1' in patch and 'NFT_KFREE = 5' in patch and 'NFT_ALLOCATOR_STATE = 6' in patch\n+    assert 'nftrace_page_alloc((uint64)l, 1, nf_free_pages, nf_used_pages)' in patch\n+    assert 'nftrace_page_free((uint64)pa, 1, nf_free_pages, nf_used_pages)' in patch\n+    assert 'nftrace_allocator_state(nf_free_pages, nf_used_pages)' in patch\n+    assert patch.index('*pte = PA2PTE(pa) | perm | PTE_V;') < patch.index('nodefusion_pagetable_map(a, pa, perm | PTE_V);')\n+    assert 'const struct nftrace_record record = { type, { a0, a1, a2, a3 } }' in patch\n+\n+\n+def test_ucore_2026a_ch4_page_table_experiment_owns_and_reclaims_its_pages():\n+    patch = (INTEGRATIONS / 'ucore-2026a-ch4-pagetable-experiment.patch').read_text()\n+    assert patch.index('uvmunmap(table, va, 1, 0)') < patch.index('uvmunmap(table, va, 1, 1)')\n+    assert patch.index('uvmunmap(table, TRAMPOLINE, 1, 0)') < patch.index('freewalk(table)')\n+    assert 'walkaddr(table, va + 0x123) != (uint64)frame' in patch\n+    assert 'useraddr(table, va + 0x123) != (uint64)frame + 0x123' in patch\n+    assert 'frame[0x123] != 0x5a' in patch\n+    assert patch.index('kvm_init();') < patch.index('nodefusion_pagetable_experiment();', patch.index('kvm_init();'))\n+\n+\n def test_ucore_showcase_fixes_remain_separate_from_observation_patch():\n     observation = (INTEGRATIONS / \"ucore-nodefusion.patch\").read_text()\n     kernel_fix = (INTEGRATIONS / \"ucore-ch8-showcase.patch\").read_text()\n@@ -204,6 +295,13 @@ def test_ucore_manifest_covers_all_eight_measured_shapes():\n     manifest = load(ROOT / \"manifests\" / \"ucore.toml\")\n     assert manifest.detect == {\"all_symbol\": [\"digits\", \"SBI_SHUTDOWN\"]}\n     assert manifest.derive_feature_absence_from_symbols is True\n+    process = manifest.entity(\"process\")\n+    assert process.liveness[\"skip_when\"] == {\n+        \"field\": \"state\", \"one_of\": [\"UNUSED\", \"P_UNUSED\"]}\n+    fields = {field.name: field for field in process.fields}\n+    assert fields[\"context\"].role == \"sched_context\"\n+    assert fields[\"trapframe\"].role == \"trap_context\"\n+    assert all(fields[name].optional for name in (\"context\", \"trapframe\", \"kstack\"))\n     parent = next(field for field in manifest.entity(\"process\").relations\n                   if field.name == \"parent\")\n     assert parent.optional is True\n"
      },
      {
        "path": "nodefusion/tests/test_resolve.py",
        "sha256": "b14f432eb380c5514b73431978b01b0d715ed9a49f92deb547358fb35dd4d8ec",
        "patch": "diff --git a/nodefusion/tests/test_resolve.py b/nodefusion/tests/test_resolve.py\nindex 0eeed28..585b0a8 100644\n--- a/nodefusion/tests/test_resolve.py\n+++ b/nodefusion/tests/test_resolve.py\n@@ -97,6 +97,30 @@ def test_missing_field_is_absent_not_a_failure():\n     assert resolve_path(dw, tcb, \"inner.priority\").state == ABSENT\n \n \n+def test_rcore_priority_spellings_resolve_without_kernel_branches():\n+    from nodefusion.model.manifest import builtin_dir, load\n+    from nodefusion.model.snapshot import Entity, Field\n+\n+    manifest = load(builtin_dir() / \"rcore.toml\")\n+    specs = [field for entity in manifest.entities if entity.name == \"task\"\n+             for field in entity.fields if field.role == \"priority\"]\n+    assert {field.path for field in specs} == {\"inner.prio\", \"inner.priority\"}\n+    assert all(field.optional for field in specs)\n+    for spelling in (\"prio\", \"priority\", None):\n+        dw, tcb = chain()\n+        if spelling:\n+            dw._s[6].fields[spelling] = 136\n+        fields = {}\n+        for spec in specs:\n+            resolved = resolve_path(dw, tcb, spec.path)\n+            fields[spec.name] = Field(spec.name, resolved.state,\n+                                      value=16 if resolved.state == PRESENT else None,\n+                                      role=spec.role)\n+        entity = Entity(\"task\", 0x1000, fields=fields)\n+        assert entity.role(\"priority\") == (16 if spelling else None)\n+        assert sum(field.ok for field in fields.values()) == (1 if spelling else 0)\n+\n+\n def test_missing_field_names_the_payload_type_not_just_the_wrapper():\n     dw, tcb = chain()\n     why = resolve_path(dw, tcb, \"inner.priority\").reason or \"\"\n"
      }
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      "scripts/finalize_artifacts.py": "a10224f43e0554eeb347a201dfd29781fbe0a39b979f890cccbec65e76cea9eb",
      "scripts/regenerate_artifact.py": "aed10d1eedc5689b6fd68e84a9bb8ae0c98f7bb8456fd8bd280e8bae470b8e9a"
    },
    "nodefusion_runtime_overrides": [
      {
        "path": "nodefusion/host/analyze.py",
        "sha256": "310d26f5c89334c05ee697bb5709a8e8bbce140bcb67f2d3450a09232a3d38b7",
        "patch": "diff --git a/nodefusion/host/analyze.py b/nodefusion/host/analyze.py\nindex a6ca1e7..7108a60 100644\n--- a/nodefusion/host/analyze.py\n+++ b/nodefusion/host/analyze.py\n@@ -642,6 +642,12 @@ class Analysis:\n         from ..model.manifest import _COMPLETENESS\n         from ..model.snapshot import _completeness\n         got = _completeness(res.sources)[\"completeness\"]\n+        if got == \"total\":\n+            from ..model.resolve import PRESENT\n+            contexts = [field for entity in ents.res.entities if entity.sources\n+                        for field in entity.fields if field.role == \"sched_context\"]\n+            if not any(field.state == PRESENT for field in contexts):\n+                return None\n         return _COMPLETENESS.get(got)\n \n     def _task_by_ctx(self, state_idx: int, ctx: int):\n@@ -745,6 +751,7 @@ class Analysis:\n             return self.states[i].ticks if i >= 0 else None\n \n         cur_slot: dict[int, int | None] = {c: None for c in range(self.ncpu)}\n+        self._semantic_current: dict[int, tuple[int | None, str | None]] = {}\n \n         merged = heapq.merge(\n             ((d.insn, 0, \"discon\", d) for d in tr.discons),\n@@ -889,7 +896,6 @@ class Analysis:\n                 unknown=[] if outcome is not None else [\"outcome\"])\n \n         if r.type == self.NFT_SCHED_SWITCH:\n-            pid, proc = self._attribute(r.cpu, si, cur_slot)\n             detail = {\"source\": \"nftrace\"}\n             for end, task_id, visible_id in (\n                     (\"from\", r.a[0], r.a[2]), (\"to\", r.a[1], r.a[3])):\n@@ -900,6 +906,12 @@ class Analysis:\n                 else:\n                     detail[f\"{end}_pid\"] = visible_id\n                     detail[f\"{end}_proc\"] = f\"task#{visible_id}\"\n+            # Entry-based switches are suppressed when this channel exists.\n+            # Retain its authoritative destination independently of snapshot slots.\n+            if not hasattr(self, \"_semantic_current\"):\n+                self._semantic_current = {}\n+            pid, proc = detail[\"to_pid\"], detail[\"to_proc\"]\n+            self._semantic_current[r.cpu] = (pid, proc)\n             return Event(\n                 insn=r.insn, cpu=r.cpu, kind=SWITCH_EVENT,\n                 resource=\"scheduler\", pid=pid, proc=proc, pc=None,\n@@ -924,6 +936,9 @@ class Analysis:\n                     \"source\": \"nftrace\"}, unknown=[])\n \n     def _attribute(self, cpu: int, si: int, cur_slot: dict) -> tuple[int | None, str | None]:\n+        current = getattr(self, \"_semantic_current\", {})\n+        if cpu in current:\n+            return current[cpu]\n         slot = cur_slot.get(cpu)\n         if slot is None:\n             return None, None\n"
      },
      {
        "path": "nodefusion/host/record.py",
        "sha256": "ed6668c5711bcddff0e30a4b82eaf9235e6700746ce186042e39e45219b55428",
        "patch": "diff --git a/nodefusion/host/record.py b/nodefusion/host/record.py\nindex ac7695e..93323e0 100644\n--- a/nodefusion/host/record.py\n+++ b/nodefusion/host/record.py\n@@ -399,6 +399,10 @@ class Recorder:\n                     f\"内核自己按顺序跑完所有应用，没有地方喂命令。\")\n \n \n+    @property\n+    def interactive_workload(self) -> bool:\n+        return self.profile.interactive and bool(self.cfg.program) and self.cfg.program != NO_PROGRAM\n+\n     def effective_lab_stage(self) -> int | None:\n         if self.cfg.lab_stage is not None:\n             return self.cfg.lab_stage\n@@ -445,8 +449,7 @@ class Recorder:\n                 f\"--no-build：这次没有编译，直接用了现成的 \"\n                 f\"{self.kernel_elf_path}（修改时间 \"\n                 f\"{mt.strftime('%Y-%m-%d %H:%M UTC')}）。\"\n-                \"也就是说**没人验证过这份二进制是当前源码编出来的**；\"\n-                \"它可能是任何时候留下的。ELF 指纹见 kernel_elf_identity。\")\n+                \"ELF 校验和见 kernel_elf_identity。\")\n             return \"(--no-build：跳过构建)\"\n \n         mv = self._make_var_string()\n@@ -571,7 +574,7 @@ class Recorder:\n \n         outcome = \"unknown\"\n         try:\n-            if not self.profile.interactive:\n+            if not self.interactive_workload:\n                 outcome = self._drive_headless(proc, reader)\n             else:\n                 outcome = self._drive_shell(proc, reader)\n@@ -738,7 +741,7 @@ class Recorder:\n             # An interactive shell's exec sequence cannot identify the host\n             # command without a dedicated marker.\n             prog_start = _program_start_from_trace(\n-                tr, wl_json, interactive=self.profile.interactive)\n+                tr, wl_json, interactive=self.interactive_workload)\n             tmp_trace.unlink(missing_ok=True)\n         if total <= 0:\n             raise RecordError(\n@@ -835,7 +838,7 @@ class Recorder:\n                 calibration_path, calibration_wl.to_json())\n \n         focus_start = _snapshot_focus_start(\n-            prog_start, calibrated_total, interactive=self.profile.interactive)\n+            prog_start, calibrated_total, interactive=self.interactive_workload)\n \n         if c.snap_insns is not None:\n             snap_insns = c.snap_insns\n@@ -909,7 +912,7 @@ class Recorder:\n             \"snap_start_insn\": snap_start,\n             \"program_start_insn\": prog_start,\n             \"snapshot_focus\": (\"interactive_tail_15pct\" if\n-                               self.profile.interactive and not prog_start and\n+                               self.interactive_workload and not prog_start and\n                                c.snap_start is None and calibrated_total else\n                                \"program_boundary\" if prog_start else \"uniform\"),\n             \"calibrated_total_insns\": calibrated_total,\n"
      },
      {
        "path": "nodefusion/manifests/rcore.toml",
        "sha256": "4a6c4746a885ce7ed68a374516188f02d5955028c94ecfa7e73c5ddf08b73e75",
        "patch": "diff --git a/nodefusion/manifests/rcore.toml b/nodefusion/manifests/rcore.toml\nindex 3579114..01e843c 100644\n--- a/nodefusion/manifests/rcore.toml\n+++ b/nodefusion/manifests/rcore.toml\n@@ -174,12 +174,7 @@ kind         = \"batch\"\n completeness = \"none\"\n when         = { type_exists = \"os::batch::AppManager\" }\n reason       = \"ch2 是批处理，没有任务表；只有当前应用序号\"\n-steps = [\n-\n-\n-  { static = \"os::batch::APP_MANAGER\" },\n-  { unwrap = [\"Lazy\", \"UPSafeCell\"] },\n-]\n+steps = []\n \n # ch1 has neither TaskControlBlock nor AppManager.  This source records that\n # structural absence explicitly; it intentionally enumerates no entities.\n@@ -213,8 +208,12 @@ base  = { path = \"base_size\",       reader = \"usize\" }\n # address, which the page-table walk then reported as \"not in observed\n # physical memory\" -- a unit error that reads like missing memory.\n # `.__0` rather than the tuple struct itself so no field offset is assumed.\n-pgtbl = { path = \"inner.memory_set.page_table.root_ppn.__0\", reader = \"ppn\", role = \"address_space_root\" }\n-prio  = { path = \"inner.priority\",  reader = \"usize\", role = \"priority\" }\n+pgtbl = { path = \"memory_set.page_table.root_ppn.__0\", reader = \"ppn\", role = \"address_space_root\" }\n+prio  = { path = \"inner.prio\",      reader = \"usize\", role = \"priority\" }\n+priority = { path = \"inner.priority\", reader = \"usize\", role = \"priority\" }\n+stride = { path = \"inner.stride\", reader = \"usize\" }\n+heap_bottom = { path = \"inner.heap_bottom\", reader = \"usize\" }\n+program_brk = { path = \"inner.program_brk\", reader = \"usize\" }\n \n \n \n@@ -223,7 +222,7 @@ exit  = { path = \"inner.exit_code\", reader = \"i32\", role = \"exit_code\" }\n \n \n \n-trapcx = { path = \"inner.trap_cx_ppn.__0\", reader = \"ppn\", role = \"trap_context\" }\n+trapcx = { path = \"trap_cx_ppn.__0\", reader = \"ppn\", role = \"trap_context\" }\n # These relations appear only once rCore introduces a process tree (ch5).\n # They are optional fields with links, so ch3/ch4 report structural absence\n # rather than claiming that a required relation failed to decode.\n@@ -477,6 +476,18 @@ throttle  = 0\n \n \n \n+\n+[[watch]]\n+subsystem = \"mm\"\n+match     = { module = \"os::mm::memory_set::MemorySet\", fn = [\"remove_framed_area\"] }\n+args      = 3\n+throttle  = 0\n+\n+[[watch]]\n+subsystem = \"mm\"\n+match     = { module = \"os::mm::page_table::PageTable\", fn = [\"map\"] }\n+args      = 4\n+throttle  = 0\n \n [[watch]]\n subsystem = \"mm\"\n@@ -656,7 +667,7 @@ throttle  = 0\n \"proc.alloc\" = { why = \"feature\", when = { type_missing = \"os::task::task::TaskControlBlock\" }, evidence = \"ch1、ch2 无任务分配路径；ch2 的 loader.c 复用同一应用内存区依次装入二进制，ch3 起引入 TaskControlBlock。\" }\n \"proc.fork\" = { why = \"feature\", when = { type_missing = \"os::task::processor::Processor\" }, evidence = \"rCore ch1–ch4 的 os/src/task 尚无 fork 路径；ch5 起有 Processor 与 TaskControlBlock::fork。按当前 ELF 的 Processor 类型核对阶段。\" }\n \"proc.exec\" = { why = \"feature\", when = { type_missing = \"os::task::processor::Processor\" }, evidence = \"rCore ch1–ch4 静态装入应用，os/src/syscall 无 exec；ch5 起引入进程管理和 exec。按当前 ELF 的 Processor 类型核对阶段。\" }\n-\"vm.unmap\" = { why = \"feature\", when = { type_missing = \"os::task::processor::Processor\" }, evidence = \"rCore ch4 的 os/src/syscall/process.rs 中 sys_munmap 明确为 NOT IMPLEMENTED YET；ch5 起有进程内存回收。按当前 ELF 的 Processor 类型区分阶段。\" }\n+\"vm.unmap\" = { why = \"feature\", when = { type_missing = \"os::mm::memory_set::MemorySet\" }, evidence = \"未定义 os::mm::memory_set::MemorySet 的早期构建没有分页区域；定义该类型的构建按 os/src/mm/memory_set.rs 中的区域取消映射路径检查，包括 2026A 的 remove_framed_area。\" }\n \"phys.alloc\" = { why = \"feature\", when = { type_missing = \"os::mm::frame_allocator::StackFrameAllocator\" }, evidence = \"rCore ch1–ch3 尚无页帧分配器；ch4 起的 os/src/mm/frame_allocator.rs 定义 StackFrameAllocator。按当前 ELF 的该类型核对阶段。\" }\n \"phys.free\" = { why = \"feature\", when = { type_missing = \"os::mm::frame_allocator::StackFrameAllocator\" }, evidence = \"rCore ch1–ch3 尚无页帧分配器及逐页归还；ch4 起的 os/src/mm/frame_allocator.rs 实现分配与回收。按当前 ELF 的类型核对阶段。\" }\n \"vm.map\" = { why = \"feature\", when = { type_missing = \"os::mm::memory_set::MemorySet\" }, evidence = \"rCore ch1–ch3 还没有分页地址空间；ch4 起的 os/src/mm/memory_set.rs 定义 MemorySet 并建立区域映射。按当前 ELF 的类型核对阶段。\" }\n@@ -828,7 +839,7 @@ throttle  = 0\n \n \"os::mm::frame_allocator::frame_dealloc\" = \"phys.free\"\n \"os::mm::frame_allocator::frame_alloc\" = \"phys.alloc\"\n-\"os::mm::page_table::PageTable::map\" = \"pagetable.map\"\n+\"os::mm::page_table::PageTable::map\" = { kind = \"pagetable.map\", resource = \"pagetable\", args = [\"self\", \"vpn\", \"ppn\", \"flags\"] }\n \"os::mm::page_table::PageTable::unmap\" = \"pagetable.unmap\"\n \"os::mm::page_table::PageTable::new\" = \"pagetable.new\"\n \n@@ -893,6 +904,7 @@ throttle  = 0\n \n \"os::mm::memory_set::nodefusion_vm_unmap_region\" = { kind = \"vm.unmap\", resource = \"vm\", args = [\"start_vpn\", \"end_vpn\"] }\n \"os::mm::memory_set::MemorySet::remove_area_with_start_vpn\" = \"vm.remove_area\"\n+\"os::mm::memory_set::MemorySet::remove_framed_area\" = { kind = \"vm.remove_area\", resource = \"vm\", args = [\"self\", \"start_vpn\", \"end_vpn\"] }\n \"os::mm::memory_set::MemorySet::shrink_to\" = \"vm.shrink\"\n \"os::mm::memory_set::MemorySet::append_to\" = \"vm.grow\"\n \"os::mm::init\" = \"vm.init\"\n@@ -1550,3 +1562,35 @@ opts = [\n [syscalls]\n files   = [\"os/src/syscall/mod.rs\"]\n pattern = 'const\\s+SYSCALL_(?P<name>\\w+)\\s*:\\s*usize\\s*=\\s*(?P<num>\\d+)'\n+\n+[[entity]]\n+name = \"batch_manager\"\n+type = \"os::batch::AppManager\"\n+label = \"应用批次\"\n+\n+[[entity.source]]\n+kind = \"table\"\n+completeness = \"total\"\n+when = { type_exists = \"os::batch::AppManager\" }\n+steps = [{ static = \"os::batch::APP_MANAGER\" }, { unwrap = [\"Lazy\", \"UPSafeCell\"] }]\n+\n+[entity.fields]\n+num_app = { path = \"num_app\", reader = \"u64\" }\n+current_app = { path = \"current_app\", reader = \"u64\" }\n+\n+[entity.table]\n+empty = \"当前没有应用批次。\"\n+  [[entity.table.column]]\n+  key = \"num_app\"\n+  label = \"应用数\"\n+  [[entity.table.column]]\n+  key = \"current_app\"\n+  label = \"下一应用序号\"\n+\n+[[watch]]\n+subsystem = \"trap\"\n+match = { fn = [\"os::trap::trap_handler\"] }\n+when = { type_exists = \"os::batch::AppManager\" }\n+snapshot = \"always\"\n+args = 1\n+throttle = 0\n"
      },
      {
        "path": "nodefusion/manifests/ucore.toml",
        "sha256": "7ca738a5abfb1c21afdb75b44c2fc0ce81b19d3d2db9aa3d820850b8abf74327",
        "patch": "diff --git a/nodefusion/manifests/ucore.toml b/nodefusion/manifests/ucore.toml\nindex 4312842..750f358 100644\n--- a/nodefusion/manifests/ucore.toml\n+++ b/nodefusion/manifests/ucore.toml\n@@ -33,17 +33,29 @@ steps = [\n   { iter = \"array\" },\n ]\n \n+[[entity.source]]\n+kind = \"batch\"\n+completeness = \"none\"\n+when = { all = [{ type_missing = \"proc\" }, { symbol_exists = \"clean_bss\" }, { symbol_missing = \"pool\" }, { symbol_missing = \"allocproc\" }, { symbol_missing = \"scheduler\" }] }\n+steps = []\n+\n [entity.liveness]\n-skip_when = { field = \"state\", equals = \"P_UNUSED\" }\n+skip_when = { field = \"state\", one_of = [\"UNUSED\", \"P_UNUSED\"] }\n \n [entity.fields]\n pid         = { path = \"pid\",         reader = \"i32\",  role = \"id\" }\n state       = { path = \"state\",       reader = \"enum\", enum = \"procstate\", role = \"state\" }\n \n [entity.optional_fields]\n+kstack      = { path = \"kstack\",      reader = \"u64\" }\n+trapframe   = { path = \"trapframe\",   reader = \"ptr\", role = \"trap_context\" }\n+context     = { path = \"context\",    reader = \"struct\", role = \"sched_context\" }\n pagetable   = { path = \"pagetable\",   reader = \"ptr\", role = \"address_space_root\" }\n max_page    = { path = \"max_page\",    reader = \"u64\" }\n ustack_base = { path = \"ustack_base\", reader = \"u64\" }\n+ustack      = { path = \"ustack\",      reader = \"u64\" }\n+heap_bottom = { path = \"heap_bottom\", reader = \"u64\" }\n+program_brk = { path = \"program_brk\", reader = \"u64\" }\n exit_code   = { path = \"exit_code\",   reader = \"u64\", role = \"exit_code\" }\n files       = { path = \"files\",       reader = \"array<ptr>\" }\n \n@@ -112,6 +124,53 @@ empty = \"当前没有活跃线程。\"\n \n # -------------------------------------------------------------- resources\n \n+[[entity]]\n+name = \"batch_context\"\n+type = \"trapframe\"\n+label = \"用户上下文\"\n+\n+[[entity.source]]\n+kind = \"table\"\n+completeness = \"total\"\n+when = { all = [{ type_exists = \"trapframe\" }, { symbol_exists = \"trap_page\" }, { symbol_missing = \"pool\" }] }\n+steps = [{ static = \"trap_page\" }]\n+\n+[[entity.source]]\n+kind = \"batch\"\n+completeness = \"none\"\n+when = { all = [{ type_exists = \"proc\" }, { symbol_exists = \"pool\" }, { symbol_missing = \"trap_page\" }] }\n+steps = []\n+\n+[entity.fields]\n+epc = { path = \"epc\", reader = \"u64\" }\n+user_sp = { path = \"sp\", reader = \"u64\" }\n+kernel_sp = { path = \"kernel_sp\", reader = \"u64\" }\n+a0 = { path = \"a0\", reader = \"u64\" }\n+a1 = { path = \"a1\", reader = \"u64\" }\n+a2 = { path = \"a2\", reader = \"u64\" }\n+a7 = { path = \"a7\", reader = \"u64\" }\n+\n+[entity.table]\n+empty = \"本构建没有独立的批处理上下文。\"\n+  [[entity.table.column]]\n+  key = \"epc\"\n+  label = \"返回地址\"\n+  format = \"hex\"\n+  [[entity.table.column]]\n+  key = \"user_sp\"\n+  label = \"用户栈\"\n+  format = \"hex\"\n+  [[entity.table.column]]\n+  key = \"kernel_sp\"\n+  label = \"内核栈\"\n+  format = \"hex\"\n+  [[entity.table.column]]\n+  key = \"a7\"\n+  label = \"a7\"\n+  [[entity.table.column]]\n+  key = \"a0\"\n+  label = \"a0\"\n+\n [[entity]]\n name  = \"bcache\"\n type  = \"buf\"\n@@ -264,12 +323,20 @@ empty = \"当前没有活跃 inode。\"\n # --------------------------------------------------------------- watches\n \n [[watch]]\n-subsystem = \"panic\"\n+subsystem = \"kernel\"\n match     = { fn = [\"shutdown\"] }\n snapshot  = \"always\"\n-args      = 2\n+args      = 0\n throttle  = 0\n \n+[[watch]]\n+subsystem = \"trap\"\n+match = { fn = [\"usertrap\", \"usertrapret\"] }\n+when = { type_missing = \"proc\" }\n+snapshot = \"always\"\n+args = 2\n+throttle = 0\n+\n [[watch]]\n subsystem = \"nftrace\"\n match     = { fn = [\"nftrace_commit_point\"] }\n@@ -453,7 +520,7 @@ piperead = { kind = \"pipe.read\", resource = \"pipe\" }\n pipewrite = { kind = \"pipe.write\", resource = \"pipe\" }\n pipeclose = { kind = \"pipe.close\", resource = \"pipe\" }\n \n-shutdown = { kind = \"kernel.panic\", args = [\"reason\"] }\n+shutdown = { kind = \"kernel.shutdown\" }\n \n # ----------------------------------------------------------------- profile\n \n@@ -471,12 +538,11 @@ machine_opts = [\n ]\n interactive = true\n prompt = \">> \"\n-ready_markers = [\"C user shell\"]\n-# User-space assertions deliberately print the same ``[PANIC ...]`` prefix as\n-# the kernel logger and then return a non-zero test status.  Treating that text\n-# as a kernel panic truncates aggregate suites halfway through; the shell's\n-# exit line and QEMU termination provide unambiguous outcomes instead.\n-panic_markers = [\"core dumped\"]\n+ready_markers = [\"hello wrold!\", \"C user shell\", \"start scheduler!\"]\n+done_markers = [\"ALL DONE\", \"all app are over!\", \"all apps over\"]\n+# User faults and assertions share the kernel's diagnostic text. Completion\n+# markers, process exit lines and QEMU termination determine the outcome.\n+panic_markers = []\n halt_markers = []\n stdin_preload = true\n stdin_pad = \"\\n\"\n"
      },
      {
        "path": "nodefusion/model/dwarfsrc.py",
        "sha256": "02688f5f8419ba6c8fd64ea4f347929f74c8b70299b632223c5535bab298f265",
        "patch": "diff --git a/nodefusion/model/dwarfsrc.py b/nodefusion/model/dwarfsrc.py\nindex 6716ea1..2dd0640 100644\n--- a/nodefusion/model/dwarfsrc.py\n+++ b/nodefusion/model/dwarfsrc.py\n@@ -99,6 +99,10 @@ class DwarfSource:\n         if not elf.has_dwarf_info():\n             raise RuntimeError(f\"{self.path} 里没有调试信息（.debug_info）\")\n         self.e_machine = elf.header[\"e_machine\"]\n+        symtab = elf.get_section_by_name('.symtab')\n+        self.defined_symbols = (None if symtab is None else\n+                                {s.name for s in symtab.iter_symbols()\n+                                 if s.name and s['st_shndx'] != 'SHN_UNDEF'})\n         self._exec_ranges = self._exec_sections(elf)\n         self._parse(elf.get_dwarf_info())\n         self._index_short()\n"
      },
      {
        "path": "nodefusion/model/kinds.py",
        "sha256": "0432ef9f134654bc36554ec55afcb9f91c593110cdacf0a58d0ac4d1d05ac569",
        "patch": "diff --git a/nodefusion/model/kinds.py b/nodefusion/model/kinds.py\nindex c9da0ea..5551612 100644\n--- a/nodefusion/model/kinds.py\n+++ b/nodefusion/model/kinds.py\n@@ -17,7 +17,7 @@ KINDS: frozenset[str] = frozenset({\n     \"inode.write\",\n     \"interrupt.clock\", \"interrupt.dispatch\", \"interrupt.external\",\n     \"interrupt.other\", \"interrupt.software\", \"interrupt.timer\",\n-    \"kernel.alloc_error\", \"kernel.panic\",\n+    \"kernel.alloc_error\", \"kernel.panic\", \"kernel.shutdown\",\n     \"log.begin\", \"log.commit\", \"log.end\", \"log.install\", \"log.recover\",\n     \"log.write\", \"log.write_blocks\",\n     \"pagetable.freewalk\", \"pagetable.map\", \"pagetable.new\", \"pagetable.unmap\",\n"
      },
      {
        "path": "nodefusion/model/resolve.py",
        "sha256": "0c588760d0ec6494617007b02d786285ba190593935f574f6c53b99ad62ac8c0",
        "patch": "diff --git a/nodefusion/model/resolve.py b/nodefusion/model/resolve.py\nindex 5c9b606..a655199 100644\n--- a/nodefusion/model/resolve.py\n+++ b/nodefusion/model/resolve.py\n@@ -127,6 +127,24 @@ def resolve_path(dw: DwarfSource, start: StructLayout, path: str,\n def eval_when(dw: DwarfSource, pred: dict | None) -> tuple[bool, str]:\n     if not pred:\n         return True, \"无条件\"\n+    if not isinstance(pred, dict) or len(pred) != 1:\n+        return False, \"when 需要一种谓词\"\n+    if 'all' in pred:\n+        children = pred['all']\n+        if not isinstance(children, list) or not children or any(not isinstance(p, dict) or not p for p in children):\n+            return False, \"all 需要非空的谓词数组\"\n+        results = [eval_when(dw, child) for child in children]\n+        return all(hit for hit, _ in results), '；'.join(reason for _, reason in results)\n+    if 'symbol_exists' in pred or 'symbol_missing' in pred:\n+        key = next(iter(pred))\n+        name = pred[key]\n+        if not isinstance(name, str) or not name.strip():\n+            return False, \"符号名不能为空\"\n+        symbols = getattr(dw, 'defined_symbols', None)\n+        if symbols is None:\n+            return False, \"没有完整 ELF 符号表\"\n+        exists = name in symbols\n+        return (exists if key == 'symbol_exists' else not exists), f\"符号 {name} {'在' if exists else '不在'}\"\n \n     if \"type_exists\" in pred:\n         want = pred[\"type_exists\"]\n"
      },
      {
        "path": "nodefusion/model/snapshot.py",
        "sha256": "e9c4ce76b858a9003e43d9eec363e1b88d4024338c3401b7a47a9871fe5dab7a",
        "patch": "diff --git a/nodefusion/model/snapshot.py b/nodefusion/model/snapshot.py\nindex fa095ef..0bf7cb7 100644\n--- a/nodefusion/model/snapshot.py\n+++ b/nodefusion/model/snapshot.py\n@@ -68,6 +68,8 @@ def is_live(entity: Entity, liveness: dict | None) -> bool:\n         return True\n     if \"equals\" in sw:\n         return f.value != sw[\"equals\"]\n+    if \"one_of\" in sw:\n+        return f.value not in sw[\"one_of\"]\n     return True\n \n \n"
      },
      {
        "path": "nodefusion/host/bundle.py",
        "sha256": "f6117f48b073e117dc0ffa6cdf1af4984d173b3a8f16808730e3746b51c2ad33",
        "patch": "diff --git a/nodefusion/host/bundle.py b/nodefusion/host/bundle.py\nindex a31f11f..4a3967a 100644\n--- a/nodefusion/host/bundle.py\n+++ b/nodefusion/host/bundle.py\n@@ -15,6 +15,7 @@ from .analyze import Analysis\n MAX_EVENTS = 150_000\n \n MIN_SPARE_EVENTS = 25_000\n+MIN_KIND_EVENTS = 64\n \n DIAGNOSTIC_PREFIXES = (\"func.\",)\n \n@@ -57,6 +58,25 @@ class Interner:\n         return i\n \n \n+def _kind_budgets(counts: dict[str, int], budget: int) -> tuple[dict[str, int], int]:\n+    if not counts:\n+        return {}, 0\n+    floor = min(MIN_KIND_EVENTS, budget // len(counts))\n+    if floor == 0:\n+        return {kind: int(index < budget) for index, kind in enumerate(counts)}, 0\n+    quotas = {kind: min(count, floor) for kind, count in counts.items()}\n+    remaining = budget - sum(quotas.values())\n+    residual_total = sum(counts.values()) - sum(quotas.values())\n+    cumulative = 0\n+    if residual_total:\n+        for kind, count in counts.items():\n+            residual = count - quotas[kind]\n+            quotas[kind] += ((cumulative + residual) * remaining // residual_total\n+                             - cumulative * remaining // residual_total)\n+            cumulative += residual\n+    return quotas, floor\n+\n+\n def _event_selection(events: list, *, materialize: bool) -> tuple[list, dict]:\n     \"\"\"Bound the interactive event stream while auditing the full raw trace.\"\"\"\n     raw_kinds = Counter(e.kind for e in events)\n@@ -65,7 +85,7 @@ def _event_selection(events: list, *, materialize: bool) -> tuple[list, dict]:\n     if len(events) <= MAX_EVENTS:\n         return (events if materialize else []), {\n             \"applied\": False,\n-            \"policy\": \"kind-preserving/systematic-v3\",\n+            \"policy\": \"kind-preserving/systematic-v5\",\n             \"raw\": len(events), \"retained\": len(events), \"dropped\": 0,\n             \"target_limit\": MAX_EVENTS, \"minimum_spare\": MIN_SPARE_EVENTS,\n             \"always_keep\": \"all events when the raw stream fits\",\n@@ -77,37 +97,32 @@ def _event_selection(events: list, *, materialize: bool) -> tuple[list, dict]:\n         }\n \n     spare_raw = len(events) - priority_raw\n-    semantic_kinds = {k for k in raw_kinds if _is_semantic(k)}\n-    reserved_spare = min(MIN_SPARE_EVENTS, spare_raw)\n+    semantic_counts = {k: count for k, count in raw_kinds.items() if _is_semantic(k)}\n+    reserved_spare = min(MIN_SPARE_EVENTS, spare_raw, MAX_EVENTS)\n     priority_budget = min(priority_raw, MAX_EVENTS - reserved_spare)\n+    quotas, kind_floor = _kind_budgets(semantic_counts, priority_budget)\n     room = MAX_EVENTS - priority_budget\n-    step = max(1, spare_raw // room) if room > 0 and spare_raw else 1\n+    diagnostic_counts = {k: count for k, count in raw_kinds.items() if not _is_semantic(k)}\n+    diagnostic_quotas, diagnostic_floor = _kind_budgets(diagnostic_counts, min(room, spare_raw))\n+    quotas.update(diagnostic_quotas)\n     chosen: list = []\n     retained_kinds: Counter = Counter()\n     dropped_kinds: dict[str, int] = {}\n-    spare_seen = 0\n-    spare_kept = 0\n     semantic_seen = 0\n-    first_kinds: set[str] = set()\n-    nonfirst_seen = 0\n-    nonfirst_total = priority_raw - len(semantic_kinds)\n-    nonfirst_budget = max(0, priority_budget - len(semantic_kinds))\n+    seen_by_kind: Counter = Counter()\n     for e in events:\n         if _is_semantic(e.kind):\n             semantic_seen += 1\n-            if e.kind not in first_kinds:\n-                first_kinds.add(e.kind)\n-                retain = len(first_kinds) <= priority_budget\n-            else:\n-                retain = (nonfirst_total > 0 and\n-                          (nonfirst_seen + 1) * nonfirst_budget // nonfirst_total\n-                          > nonfirst_seen * nonfirst_budget // nonfirst_total)\n-                nonfirst_seen += 1\n+        seen = seen_by_kind[e.kind]\n+        seen_by_kind[e.kind] += 1\n+        quota = quotas[e.kind]\n+        total = raw_kinds[e.kind]\n+        if seen == 0:\n+            retain = quota > 0\n         else:\n-            retain = room > 0 and spare_kept < room and spare_seen % step == 0\n-            spare_seen += 1\n-            if retain:\n-                spare_kept += 1\n+            retain = (quota > 1 and\n+                      seen * (quota - 1) // (total - 1)\n+                      > (seen - 1) * (quota - 1) // (total - 1))\n         if retain:\n             retained_kinds[e.kind] += 1\n             if materialize:\n@@ -120,15 +135,19 @@ def _event_selection(events: list, *, materialize: bool) -> tuple[list, dict]:\n \n     return chosen, {\n         \"applied\": True,\n-        \"policy\": \"kind-preserving/systematic-v3\",\n+        \"policy\": \"kind-preserving/systematic-v5\",\n         \"raw\": len(events), \"retained\": retained, \"dropped\": dropped,\n         \"target_limit\": MAX_EVENTS, \"minimum_spare\": MIN_SPARE_EVENTS,\n-        \"always_keep\": \"first event of each normalized kind within budget\",\n+        \"always_keep\": \"all events of kinds whose count fits their per-kind budget\",\n         \"priority_raw\": priority_raw, \"spare_raw\": spare_raw,\n         \"semantic_budget\": priority_budget,\n+        \"minimum_per_kind\": kind_floor,\n+        \"semantic_kind_budgets\": {k: quotas[k] for k in sorted(semantic_counts)},\n+        \"diagnostic_kind_budgets\": dict(sorted(diagnostic_quotas.items())),\n+        \"minimum_per_diagnostic_kind\": diagnostic_floor,\n         \"semantic_retained\": semantic_seen - sum(v for k, v in dropped_kinds.items()\n                                                 if _is_semantic(k)),\n-        \"spare_budget\": room, \"stride\": step if room > 0 and spare_raw else None,\n+        \"spare_budget\": room, \"stride\": None,\n         \"retained_kinds\": dict(sorted(retained_kinds.items())),\n         \"dropped_kinds\": dict(sorted(dropped_kinds.items())),\n     }\n"
      },
      {
        "path": "nodefusion/tests/test_bundle_shape.py",
        "sha256": "34d227f2726d1820160288b225243b51fe3583839ff52ee245a814eb1c27f81d",
        "patch": "diff --git a/nodefusion/tests/test_bundle_shape.py b/nodefusion/tests/test_bundle_shape.py\nindex 40bd9fe..025791a 100644\n--- a/nodefusion/tests/test_bundle_shape.py\n+++ b/nodefusion/tests/test_bundle_shape.py\n@@ -1,5 +1,6 @@\n \n import sys\n+from collections import Counter\n from pathlib import Path\n from types import SimpleNamespace as NS\n \n@@ -144,7 +145,8 @@ def test_event_selection_metadata_accounts_for_every_raw_event(monkeypatch):\n     assert audit[\"priority_raw\"] == 4\n     assert audit[\"spare_raw\"] == 26\n     assert audit[\"spare_budget\"] == 6\n-    assert audit[\"stride\"] == 4\n+    assert audit[\"stride\"] is None\n+    assert audit['diagnostic_kind_budgets'] == {'func.hot_path': 6}\n     assert sum(audit[\"retained_kinds\"].values()) == audit[\"retained\"]\n     assert sum(audit[\"dropped_kinds\"].values()) == audit[\"dropped\"]\n     assert [e.insn for e in selected[:4]] == [0, 1, 2, 3]\n@@ -156,10 +158,9 @@ def test_bounded_selector_preserves_order_and_systematic_sample(monkeypatch):\n     events = [NS(kind=(\"proc.fork\" if i in {2, 7} else \"func.hot\"), insn=i)\n               for i in range(12)]\n     selected, audit = B._select_events(events)\n-    # Ten diagnostics, four spare slots => old spare[::2][:4], interleaved\n-    # with both semantic events in original timeline order.\n-    assert [event.insn for event in selected] == [0, 2, 3, 5, 7, 8]\n-    assert audit[\"stride\"] == 2\n+    # Four per-kind positions include the first and last diagnostic entries.\n+    assert [event.insn for event in selected] == [0, 2, 4, 7, 8, 11]\n+    assert audit[\"stride\"] is None\n     assert audit[\"retained\"] == 6\n \n \n@@ -178,6 +179,79 @@ def test_large_semantic_stream_stays_browser_bounded(monkeypatch):\n     assert audit[\"raw\"] == audit[\"retained\"] + audit[\"dropped\"]\n \n \n+def test_rare_semantic_events_survive_hot_kinds_without_kernel_allowlists(monkeypatch):\n+    monkeypatch.setattr(B, 'MAX_EVENTS', 200)\n+    monkeypatch.setattr(B, 'MIN_SPARE_EVENTS', 25)\n+    events = [NS(kind='pagetable.map', insn=i) for i in range(5000)]\n+    events += [NS(kind='future_namespace.branch', insn=5000 + i) for i in range(13)]\n+    events += [NS(kind='trap.page_fault', insn=5013 + i) for i in range(4)]\n+    events += [NS(kind='func.loop', insn=5017 + i) for i in range(1000)]\n+    selected, audit = B._select_events(events)\n+    assert len(selected) == audit['retained'] == 200\n+    assert audit['retained_kinds']['future_namespace.branch'] == 13\n+    assert audit['retained_kinds']['trap.page_fault'] == 4\n+    assert audit['retained_kinds']['func.loop'] == 25\n+    assert audit['semantic_retained'] == 175\n+    assert audit['semantic_kind_budgets']['pagetable.map'] == 158\n+    hot = [item.insn for item in selected if item.kind == 'pagetable.map']\n+    assert hot[0] == 0 and hot[-1] == 4999\n+    assert [item.insn for item in selected] == sorted(item.insn for item in selected)\n+    assert B._select_events(events)[0] == selected\n+    empty, accounting = B._event_selection(events, materialize=False)\n+    assert empty == [] and accounting == audit\n+    for kind, count in Counter(item.kind for item in events).items():\n+        assert audit['retained_kinds'].get(kind, 0) + audit['dropped_kinds'].get(kind, 0) == count\n+\n+\n+def test_more_semantic_kinds_than_slots_is_still_bounded(monkeypatch):\n+    monkeypatch.setattr(B, 'MAX_EVENTS', 7)\n+    monkeypatch.setattr(B, 'MIN_SPARE_EVENTS', 2)\n+    events = [NS(kind=f'new.kind{i}', insn=i) for i in range(20)]\n+    events += [NS(kind='func.noise', insn=20 + i) for i in range(20)]\n+    selected, audit = B._select_events(events)\n+    assert len(selected) == 7\n+    assert audit['semantic_retained'] == 5 and audit['retained_kinds']['func.noise'] == 2\n+    assert sum(audit['semantic_kind_budgets'].values()) == 5\n+    assert [item.kind for item in selected[:5]] == [f'new.kind{i}' for i in range(5)]\n+    assert sum(audit['dropped_kinds'].values()) == 33\n+    assert B._event_selection(events, materialize=False)[1] == audit\n+\n+\n+def test_rare_function_entries_survive_hot_diagnostic_functions(monkeypatch):\n+    monkeypatch.setattr(B, 'MAX_EVENTS', 100)\n+    monkeypatch.setattr(B, 'MIN_SPARE_EVENTS', 25)\n+    events = [NS(kind='syscall.enter', insn=i) for i in range(1000)]\n+    events += [NS(kind='func.format', insn=1000 + i) for i in range(2000)]\n+    events += [NS(kind='func.unmap', insn=3000 + i) for i in range(2)]\n+    selected, audit = B._select_events(events)\n+    assert len(selected) == 100\n+    assert audit['retained_kinds']['func.unmap'] == 2\n+    assert audit['retained_kinds']['func.format'] == 23\n+    assert not audit['dropped_kinds'].get('func.unmap')\n+    assert selected[-1] is events[-1]\n+\n+\n+def test_kind_quotas_use_the_budget_without_exceeding_raw_counts():\n+    for counts in [{'one': 1}, {'a': 2, 'b': 1000, 'c': 9},\n+                   {str(index): index + 1 for index in range(100)}]:\n+        total = sum(counts.values())\n+        for budget in range(min(total, 300) + 1):\n+            quotas, floor = B._kind_budgets(counts, budget)\n+            assert sum(quotas.values()) == budget\n+            assert all(0 <= quotas[kind] <= count for kind, count in counts.items())\n+            assert all(quotas[kind] == count for kind, count in counts.items() if count <= floor)\n+\n+\n+def test_diagnostic_reservation_cannot_exceed_total_budget(monkeypatch):\n+    monkeypatch.setattr(B, 'MAX_EVENTS', 4)\n+    monkeypatch.setattr(B, 'MIN_SPARE_EVENTS', 25)\n+    events = [NS(kind='syscall.enter', insn=0)]\n+    events += [NS(kind='func.hot', insn=i) for i in range(1, 30)]\n+    selected, audit = B._select_events(events)\n+    assert len(selected) == 4 and audit['semantic_budget'] == 0\n+    assert audit['dropped_kinds']['syscall.enter'] == 1\n+\n+\n def test_interactive_sampling_does_not_erase_raw_semantic_coverage(monkeypatch):\n     monkeypatch.setattr(B, \"MAX_EVENTS\", 10)\n     monkeypatch.setattr(B, \"MIN_SPARE_EVENTS\", 3)\n"
      },
      {
        "path": "nodefusion/tests/test_kernel_integrations.py",
        "sha256": "8e3ecdcf6ad5ea3b7fa44a3e3244a2c9678255b62c02d8cd48de9cfc1189b376",
        "patch": "diff --git a/nodefusion/tests/test_kernel_integrations.py b/nodefusion/tests/test_kernel_integrations.py\nindex a285e88..b33e6b0 100644\n--- a/nodefusion/tests/test_kernel_integrations.py\n+++ b/nodefusion/tests/test_kernel_integrations.py\n@@ -64,7 +64,7 @@ def test_rcore_patch_and_manifest_agree_on_the_per_region_hook():\n     assert manifest.events[symbol].kind == \"vm.unmap\"\n     assert manifest.events[symbol].args == [\"start_vpn\", \"end_vpn\"]\n     assert manifest.absent[\"vm.unmap\"].when == {\n-        \"type_missing\": \"os::task::processor::Processor\"}\n+        \"type_missing\": \"os::mm::memory_set::MemorySet\"}\n \n \n def test_rcore_patch_exports_exact_physical_allocation_results():\n@@ -79,6 +79,38 @@ def test_rcore_patch_exports_exact_physical_allocation_results():\n     assert \"nodefusion_trace_sched_switch\" in patch\n \n \n+def test_rcore_reference_region_removal_is_an_attempt_not_a_success_event():\n+    manifest = load(ROOT / 'manifests/rcore.toml')\n+    symbol = 'os::mm::memory_set::MemorySet::remove_framed_area'\n+    assert manifest.events[symbol].kind == 'vm.remove_area'\n+    assert manifest.events[symbol].args == ['self', 'start_vpn', 'end_vpn']\n+    dedicated = next(index for index, watch in enumerate(manifest.watches)\n+                     if watch.match.get('fn') == ['remove_framed_area'])\n+    inline = next(index for index, watch in enumerate(manifest.watches)\n+                  if watch.match.get('fn') == ['frame_alloc', 'frame_dealloc', 'unmap', 'init_heap'])\n+    assert dedicated < inline\n+    assert manifest.watches[dedicated].args == 3\n+    assert not manifest.watches[dedicated].inlined\n+\n+\n+def test_rcore_2026a_ch4_observation_patch_preserves_region_acceptance():\n+    patch = (INTEGRATIONS / 'rcore-2026a-ch4-observation.patch').read_text()\n+    assert patch.index('})?;') < patch.index('nodefusion_vm_unmap_region(start.0, end.0);')\n+    assert patch.index('nodefusion_vm_unmap_region(start.0, end.0);') < patch.index('let mut area = self.areas.remove(index);')\n+    assert 'const NFT_ALLOCATOR_STATE: u64 = 6;' in patch\n+    assert 'a: [free_pages as u64, used_pages as u64, 0, 0]' in patch\n+    assert 'nodefusion_trace_page(NFT_KALLOC, paddr, free_pages, used_pages)' in patch\n+    assert 'nodefusion_trace_page(NFT_KFREE, PhysAddr::from(ppn).0, free_pages, used_pages)' in patch\n+    assert 'GlobalAlloc::alloc(&self.0, layout)' in patch\n+    assert 'GlobalAlloc::dealloc(&self.0, ptr, layout)' in patch\n+    manifest = load(ROOT / 'manifests/rcore.toml')\n+    event = manifest.events['os::mm::page_table::PageTable::map']\n+    assert event.kind == 'pagetable.map' and event.args == ['self', 'vpn', 'ppn', 'flags']\n+    rule = next(watch for watch in manifest.watches\n+                if watch.match == {'module': 'os::mm::page_table::PageTable', 'fn': ['map']})\n+    assert rule.args == 4 and not rule.inlined\n+\n+\n def test_rcore_chapter_patches_preserve_per_region_and_scheduler_identity():\n     for chapter in (6, 8):\n         patch = (INTEGRATIONS / f\"rcore-ch{chapter}-nodefusion.patch\").read_text(\n@@ -94,6 +126,43 @@ def test_rcore_chapter_patches_preserve_per_region_and_scheduler_identity():\n     assert \"block_current_and_run_next\" in ch8\n \n \n+def test_2026a_ch5_observation_preserves_allocator_and_switch_semantics():\n+    rust = (INTEGRATIONS / 'rcore-2026a-ch5-observation.patch').read_text()\n+    c = (INTEGRATIONS / 'ucore-2026a-ch5-observation.patch').read_text()\n+    for patch in (rust, c):\n+        assert 'nftrace_commit_point' in patch\n+        assert 'nodefusion_pagetable_map' in patch or '#[inline(never)]' in patch\n+    assert 'self.allocated -= 1;' in rust\n+    assert 'self.allocated += 1;' in rust\n+    assert 'if result.is_some()' in rust\n+    assert 'frame.as_ref().map_or(0, |frame| PhysAddr::from(frame.ppn).0)' in rust\n+    assert 'pub(crate) const NO_TASK: usize = usize::MAX;' in rust\n+    assert 'emit(4, [from_task as u64, to_task as u64, from_pid as u64, to_pid as u64])' in rust\n+    assert 'crate::nftrace::NO_TASK, next_pid' in rust\n+    assert 'crate::nftrace::sched_switch(task_id, idle, pid, crate::nftrace::NO_TASK)' in rust\n+    assert rust.index('add_task(new_task);') < rust.index('crate::nftrace::process_fork(current_task.getpid(), new_pid);')\n+    assert 'nf_used_pages--;' in c\n+    assert 'nf_used_pages++;' in c\n+    assert c.index('nf_used_pages--;') < c.index('nftrace_page_free((uint64)pa, nf_free_pages, nf_used_pages);')\n+    assert c.index('add_task(np);') < c.index('nftrace_proc_fork(p->pid, np->pid);')\n+    assert 'nftrace_sched_switch((uint64)&idle, (uint64)p, (uint64)-1, p->pid);' in c\n+    assert 'nftrace_sched_switch((uint64)p, (uint64)&idle, p->pid, (uint64)-1);' in c\n+    assert c.index('*pte = PA2PTE(pa) | perm | PTE_V;') < c.index('nodefusion_pagetable_map(a, pa, perm | PTE_V);')\n+\n+\n+def test_rcore_2026a_ch5_region_hooks_only_describe_explicit_pte_removal():\n+    patch = (INTEGRATIONS / 'rcore-2026a-ch5-observation.patch').read_text()\n+    assert 'if mapped_end > area.vpn_range.get_start()' in patch\n+    assert 'nodefusion_vm_unmap_region(area.vpn_range.get_start().0, mapped_end.0);' in patch\n+    assert 'if self.vpn_range.get_start() < self.vpn_range.get_end()' in patch\n+    assert 'nodefusion_vm_unmap_region(self.vpn_range.get_start().0, self.vpn_range.get_end().0);' in patch\n+    assert 'if new_end < self.vpn_range.get_end()' in patch\n+    assert 'nodefusion_vm_unmap_region(new_end.0, self.vpn_range.get_end().0);' in patch\n+    # Releasing data-frame ownership on exit leaves the zombie page table alive.\n+    # Do not invent explicit PTE-removal events for that separate operation.\n+    assert 'self.areas.clear();' not in patch\n+\n+\n def test_rcore_ch8_keeps_applicable_vm_and_signal_watchpoints_callable():\n     patch = (INTEGRATIONS / \"rcore-page-table-observation-points.patch\").read_text()\n     assert patch.count(\"#[inline(never)]\") == 6\n@@ -161,7 +230,7 @@ def test_rcore_filesystem_absence_depends_on_the_resolved_build(monkeypatch):\n             (\"proc.alloc\", \"os::task::task::TaskControlBlock\"),\n             (\"proc.fork\", \"os::task::processor::Processor\"),\n             (\"proc.exec\", \"os::task::processor::Processor\"),\n-            (\"vm.unmap\", \"os::task::processor::Processor\"),\n+            (\"vm.unmap\", \"os::mm::memory_set::MemorySet\"),\n             (\"phys.alloc\", \"os::mm::frame_allocator::StackFrameAllocator\"),\n             (\"phys.free\", \"os::mm::frame_allocator::StackFrameAllocator\"),\n             (\"vm.map\", \"os::mm::memory_set::MemorySet\"),\n@@ -189,6 +258,28 @@ def test_ucore_patch_and_manifest_supply_exact_semantics():\n     assert manifest.absent[\"log.commit\"].why == \"feature\"\n \n \n+def test_ucore_2026a_ch4_patch_observes_allocator_results_and_committed_ptes():\n+    patch = (INTEGRATIONS / 'ucore-2026a-ch4-observation.patch').read_text()\n+    paths = [line.split(' b/', 1)[1] for line in patch.splitlines() if line.startswith('diff --git ')]\n+    assert set(paths) == {'os/kalloc.c', 'os/vm.c', 'os/nftrace.c', 'os/nftrace.h'}\n+    assert 'NFT_KALLOC = 1' in patch and 'NFT_KFREE = 5' in patch and 'NFT_ALLOCATOR_STATE = 6' in patch\n+    assert 'nftrace_page_alloc((uint64)l, 1, nf_free_pages, nf_used_pages)' in patch\n+    assert 'nftrace_page_free((uint64)pa, 1, nf_free_pages, nf_used_pages)' in patch\n+    assert 'nftrace_allocator_state(nf_free_pages, nf_used_pages)' in patch\n+    assert patch.index('*pte = PA2PTE(pa) | perm | PTE_V;') < patch.index('nodefusion_pagetable_map(a, pa, perm | PTE_V);')\n+    assert 'const struct nftrace_record record = { type, { a0, a1, a2, a3 } }' in patch\n+\n+\n+def test_ucore_2026a_ch4_page_table_experiment_owns_and_reclaims_its_pages():\n+    patch = (INTEGRATIONS / 'ucore-2026a-ch4-pagetable-experiment.patch').read_text()\n+    assert patch.index('uvmunmap(table, va, 1, 0)') < patch.index('uvmunmap(table, va, 1, 1)')\n+    assert patch.index('uvmunmap(table, TRAMPOLINE, 1, 0)') < patch.index('freewalk(table)')\n+    assert 'walkaddr(table, va + 0x123) != (uint64)frame' in patch\n+    assert 'useraddr(table, va + 0x123) != (uint64)frame + 0x123' in patch\n+    assert 'frame[0x123] != 0x5a' in patch\n+    assert patch.index('kvm_init();') < patch.index('nodefusion_pagetable_experiment();', patch.index('kvm_init();'))\n+\n+\n def test_ucore_showcase_fixes_remain_separate_from_observation_patch():\n     observation = (INTEGRATIONS / \"ucore-nodefusion.patch\").read_text()\n     kernel_fix = (INTEGRATIONS / \"ucore-ch8-showcase.patch\").read_text()\n@@ -204,6 +295,13 @@ def test_ucore_manifest_covers_all_eight_measured_shapes():\n     manifest = load(ROOT / \"manifests\" / \"ucore.toml\")\n     assert manifest.detect == {\"all_symbol\": [\"digits\", \"SBI_SHUTDOWN\"]}\n     assert manifest.derive_feature_absence_from_symbols is True\n+    process = manifest.entity(\"process\")\n+    assert process.liveness[\"skip_when\"] == {\n+        \"field\": \"state\", \"one_of\": [\"UNUSED\", \"P_UNUSED\"]}\n+    fields = {field.name: field for field in process.fields}\n+    assert fields[\"context\"].role == \"sched_context\"\n+    assert fields[\"trapframe\"].role == \"trap_context\"\n+    assert all(fields[name].optional for name in (\"context\", \"trapframe\", \"kstack\"))\n     parent = next(field for field in manifest.entity(\"process\").relations\n                   if field.name == \"parent\")\n     assert parent.optional is True\n"
      },
      {
        "path": "nodefusion/tests/test_resolve.py",
        "sha256": "b14f432eb380c5514b73431978b01b0d715ed9a49f92deb547358fb35dd4d8ec",
        "patch": "diff --git a/nodefusion/tests/test_resolve.py b/nodefusion/tests/test_resolve.py\nindex 0eeed28..585b0a8 100644\n--- a/nodefusion/tests/test_resolve.py\n+++ b/nodefusion/tests/test_resolve.py\n@@ -97,6 +97,30 @@ def test_missing_field_is_absent_not_a_failure():\n     assert resolve_path(dw, tcb, \"inner.priority\").state == ABSENT\n \n \n+def test_rcore_priority_spellings_resolve_without_kernel_branches():\n+    from nodefusion.model.manifest import builtin_dir, load\n+    from nodefusion.model.snapshot import Entity, Field\n+\n+    manifest = load(builtin_dir() / \"rcore.toml\")\n+    specs = [field for entity in manifest.entities if entity.name == \"task\"\n+             for field in entity.fields if field.role == \"priority\"]\n+    assert {field.path for field in specs} == {\"inner.prio\", \"inner.priority\"}\n+    assert all(field.optional for field in specs)\n+    for spelling in (\"prio\", \"priority\", None):\n+        dw, tcb = chain()\n+        if spelling:\n+            dw._s[6].fields[spelling] = 136\n+        fields = {}\n+        for spec in specs:\n+            resolved = resolve_path(dw, tcb, spec.path)\n+            fields[spec.name] = Field(spec.name, resolved.state,\n+                                      value=16 if resolved.state == PRESENT else None,\n+                                      role=spec.role)\n+        entity = Entity(\"task\", 0x1000, fields=fields)\n+        assert entity.role(\"priority\") == (16 if spelling else None)\n+        assert sum(field.ok for field in fields.values()) == (1 if spelling else 0)\n+\n+\n def test_missing_field_names_the_payload_type_not_just_the_wrapper():\n     dw, tcb = chain()\n     why = resolve_path(dw, tcb, \"inner.priority\").reason or \"\"\n"
      },
      {
        "path": "nodefusion/host/assets/app.css",
        "sha256": "0607be541e6bcd789a1964e74a6677a87d5d593684d6ac809782056ab7c0695a",
        "patch": "diff --git a/nodefusion/host/assets/app.css b/nodefusion/host/assets/app.css\nindex 88f5f82..d7124ab 100644\n--- a/nodefusion/host/assets/app.css\n+++ b/nodefusion/host/assets/app.css\n@@ -460,8 +460,8 @@ tr.sel td { background: color-mix(in oklch, var(--accent) 12%, var(--bg)); }\n   .right { width: 100%; max-height: 340px; border-left: 0; border-top: 1px solid var(--line); padding: 14px; }\n   .main.detail-collapsed .right { display: none; }\n   #evscroll { height: 54vh; }\n-  .trace-grid { grid-template-columns: 1fr; }\n-  .function-tree, .function-sequence { max-height: 42vh; }\n+  .trace-grid { grid-template-columns: 1fr; min-height: 0; align-items: start; }\n+  .function-tree, .function-sequence { min-height: 0; max-height: 42vh; }\n }\n @media (max-width: 560px) {\n   .brand-kicker, .shortcut-hint { display: none; }\n"
      },
      {
        "path": "nodefusion/host/assets/app.js",
        "sha256": "c253b16d88ddc73d1c78ec3729800800ad255b923712893dbe12f66faab2aca2",
        "patch": "diff --git a/nodefusion/host/assets/app.js b/nodefusion/host/assets/app.js\nindex 7f1256e..a87dcd9 100644\n--- a/nodefusion/host/assets/app.js\n+++ b/nodefusion/host/assets/app.js\n@@ -28,6 +28,7 @@ const NF = {\n   selPage: null,\n   selPid: null,\n   filters: { text: '', kind: '', res: '', pid: '', cpu: '', group: '', from: '', to: '' },\n+  functionFilters: {text: '', cpu: '', limit: '80', grouping: null},\n };\n \n /* ------------------------------------------------------------------ 工具 */\n@@ -1641,6 +1642,10 @@ function renderFunctions() {\n   if (returns.nested_entries) grouping.appendChild(new Option('观测调用链', 'stack'));\n   if (returns.nested_entries) grouping.value = 'stack';\n   else if (!entries.some((e) => e.caller)) grouping.value = 'namespace';\n+  search.value = NF.functionFilters.text;\n+  cpu.value = NF.functionFilters.cpu;\n+  limit.value = NF.functionFilters.limit;\n+  if ([...grouping.options].some(option => option.value === NF.functionFilters.grouping)) grouping.value = NF.functionFilters.grouping;\n   controls.appendChild(search); controls.appendChild(cpu); controls.appendChild(grouping);\n   controls.appendChild(limit); p.appendChild(controls);\n \n@@ -1658,6 +1663,7 @@ function renderFunctions() {\n   grid.appendChild(treePanel); grid.appendChild(sequencePanel); p.appendChild(grid);\n \n   function paint() {\n+    NF.functionFilters = {text: search.value, cpu: cpu.value, limit: limit.value, grouping: grouping.value};\n     const q = search.value.trim().toLowerCase();\n     const selectedCpu = cpu.value;\n     const filtered = entries.filter((e) => (!q || e.fn.toLowerCase().includes(q) || e.caller.toLowerCase().includes(q) || (e.path || []).some((name) => name.toLowerCase().includes(q))) && (selectedCpu === '' || String(e.cpu) === selectedCpu));\n"
      },
      {
        "path": "nodefusion/tests/test_phys_alloc_gate.py",
        "sha256": "a1b68458d8268d052082ad92b80f86753c46423eec7c86c3bdd6019e23b8186a",
        "patch": "diff --git a/nodefusion/tests/test_phys_alloc_gate.py b/nodefusion/tests/test_phys_alloc_gate.py\nindex 3cb406d..ec2bc43 100644\n--- a/nodefusion/tests/test_phys_alloc_gate.py\n+++ b/nodefusion/tests/test_phys_alloc_gate.py\n@@ -128,6 +128,51 @@ def test_sched_semantic_record_fills_both_endpoints_without_snapshots():\n     assert event.detail[\"from_proc\"] == \"kernel-task#41\"\n     assert event.detail[\"to_task_id\"] == 42\n     assert event.detail[\"to_pid\"] == 7\n+    assert event.pid == 7\n+    assert a._attribute(0, -1, {}) == (7, \"task#7\")\n+\n+\n+def test_semantic_switch_attribution_survives_missing_and_reused_snapshot_slots():\n+    a = object.__new__(A.Analysis)\n+    a._pid_by_slot_at = lambda *_: (99, \"stale slot\")\n+    slots = {0: 3, 1: 4}\n+    assert a._attribute(0, 0, slots) == (99, \"stale slot\")\n+    a._nftrace_event(NfTraceRec(insn=100, cpu=0, type=a.NFT_SCHED_SWITCH,\n+                              a=(10, 20, a.NFT_NO_TASK, 7)), -1, slots)\n+    assert a._attribute(0, -1, {}) == (7, \"task#7\")\n+    assert a._attribute(0, 200, slots) == (7, \"task#7\")\n+    assert a._attribute(1, 0, slots) == (99, \"stale slot\")\n+    alloc = a._nftrace_event(NfTraceRec(insn=101, cpu=0, type=a.NFT_KALLOC,\n+                                      a=(0x81234000, 1, 9, 1)), -1, {})\n+    assert alloc.pid == 7\n+\n+\n+def test_semantic_switches_track_each_cpu_and_distinguish_pid_zero_from_idle():\n+    a = object.__new__(A.Analysis)\n+    for cpu, pid in [(0, 0), (1, 7)]:\n+        a._nftrace_event(NfTraceRec(insn=100 + cpu, cpu=cpu, type=a.NFT_SCHED_SWITCH,\n+                                  a=(10 + cpu, 20 + cpu, a.NFT_NO_TASK, pid)), -1, {})\n+    assert a._attribute(0, -1, {}) == (0, \"task#0\")\n+    assert a._attribute(1, -1, {}) == (7, \"task#7\")\n+    a._nftrace_event(NfTraceRec(insn=102, cpu=0, type=a.NFT_SCHED_SWITCH,\n+                              a=(20, 10, 0, a.NFT_NO_TASK)), -1, {})\n+    assert a._attribute(0, -1, {}) == (None, \"kernel-task#10\")\n+    assert a._attribute(1, -1, {}) == (7, \"task#7\")\n+\n+\n+def test_rebuilding_events_resets_semantic_ownership_without_using_future_switches():\n+    a = object.__new__(A.Analysis)\n+    a.ncpu = 1\n+    a.states = []\n+    a.events = []\n+    a._semantic_current = {0: (99, \"previous analysis\")}\n+    a.trace = NS(discons=[], watch_hits=[], nftrace=[\n+        NfTraceRec(insn=1, cpu=0, type=a.NFT_KALLOC, a=(0x81234000, 1, 9, 1)),\n+        NfTraceRec(insn=2, cpu=0, type=a.NFT_SCHED_SWITCH, a=(10, 20, a.NFT_NO_TASK, 7)),\n+        NfTraceRec(insn=3, cpu=0, type=a.NFT_KALLOC, a=(0x81235000, 1, 8, 2)),\n+    ])\n+    a.build_events()\n+    assert [event.pid for event in a.events] == [None, 7, 7]\n \n \n def test_kfree_semantic_record_has_physical_range():\n"
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    "kernel_patch": "diff --git a/Makefile b/Makefile\nindex f869484..9f12a22 100644\n--- a/Makefile\n+++ b/Makefile\n@@ -14,7 +14,7 @@ GDB = $(TOOLPREFIX)gdb\n CP = cp\n BUILDDIR = build\n C_SRCS = $(wildcard $K/*.c)\n-AS_SRCS = $(wildcard $K/*.S)\n+AS_SRCS := $(wildcard $K/*.S)\n C_OBJS = $(addprefix $(BUILDDIR)/, $(addsuffix .o, $(basename $(C_SRCS))))\n AS_OBJS = $(addprefix $(BUILDDIR)/, $(addsuffix .o, $(basename $(AS_SRCS))))\n OBJS = $(C_OBJS) $(AS_OBJS)\ndiff --git a/os/kalloc.c b/os/kalloc.c\nindex 3c7c48b..5bea13e 100644\n--- a/os/kalloc.c\n+++ b/os/kalloc.c\n@@ -1,6 +1,7 @@\n #include \"kalloc.h\"\n #include \"defs.h\"\n #include \"riscv.h\"\n+#include \"nftrace.h\"\n \n extern char ekernel[];\n \n@@ -12,6 +13,10 @@ struct {\n \tstruct linklist *freelist;\n } kmem;\n \n+static uint64 nf_free_pages;\n+static uint64 nf_used_pages;\n+static int nftrace_ready;\n+\n void freerange(void *pa_start, void *pa_end)\n {\n \tchar *p;\n@@ -23,6 +28,8 @@ void freerange(void *pa_start, void *pa_end)\n void kinit()\n {\n \tfreerange(ekernel, (void *)PHYSTOP);\n+\tnftrace_ready = 1;\n+\tnftrace_allocator_state(nf_free_pages, nf_used_pages);\n }\n \n // Free the page of physical memory pointed at by v,\n@@ -40,6 +47,11 @@ void kfree(void *pa)\n \tl = (struct linklist *)pa;\n \tl->next = kmem.freelist;\n \tkmem.freelist = l;\n+\tnf_free_pages++;\n+\tif (nftrace_ready) {\n+\t\tnf_used_pages--;\n+\t\tnftrace_page_free((uint64)pa, nf_free_pages, nf_used_pages);\n+\t}\n }\n \n // Allocate one 4096-byte page of physical memory.\n@@ -51,7 +63,11 @@ void *kalloc()\n \tl = kmem.freelist;\n \tif (l) {\n \t\tkmem.freelist = l->next;\n+\t\tnf_free_pages--;\n+\t\tnf_used_pages++;\n \t\tmemset((char *)l, 5, PGSIZE); // fill with junk\n \t}\n+\tif (nftrace_ready)\n+\t\tnftrace_page_alloc((uint64)l, nf_free_pages, nf_used_pages);\n \treturn (void *)l;\n-}\n\\ No newline at end of file\n+}\ndiff --git a/os/nftrace.c b/os/nftrace.c\nnew file mode 100644\nindex 0000000..8d99129\n--- /dev/null\n+++ b/os/nftrace.c\n@@ -0,0 +1,39 @@\n+#include \"nftrace.h\"\n+\n+__attribute__((noinline))\n+void nftrace_commit_point(const struct nftrace_record *record)\n+{\n+\tif (record != 0)\n+\t\t__asm__ volatile(\"\" : : \"r\"(*(volatile const uint64 *)record) : \"memory\");\n+}\n+\n+static inline void emit(uint64 type, uint64 a0, uint64 a1, uint64 a2, uint64 a3)\n+{\n+\tconst struct nftrace_record record = { type, { a0, a1, a2, a3 } };\n+\tnftrace_commit_point(&record);\n+}\n+\n+void nftrace_page_alloc(uint64 pa, uint64 free_pages, uint64 used_pages)\n+{\n+\temit(1, pa, 1, free_pages, used_pages);\n+}\n+\n+void nftrace_page_free(uint64 pa, uint64 free_pages, uint64 used_pages)\n+{\n+\temit(5, pa, 1, free_pages, used_pages);\n+}\n+\n+void nftrace_allocator_state(uint64 free_pages, uint64 used_pages)\n+{\n+\temit(6, free_pages, used_pages, 0, 0);\n+}\n+\n+void nftrace_proc_fork(uint64 parent, uint64 child)\n+{\n+\temit(2, parent, child, 0, 0);\n+}\n+\n+void nftrace_sched_switch(uint64 from_task, uint64 to_task, uint64 from_pid, uint64 to_pid)\n+{\n+\temit(4, from_task, to_task, from_pid, to_pid);\n+}\ndiff --git a/os/nftrace.h b/os/nftrace.h\nnew file mode 100644\nindex 0000000..e1428ae\n--- /dev/null\n+++ b/os/nftrace.h\n@@ -0,0 +1,18 @@\n+#ifndef NFTRACE_H\n+#define NFTRACE_H\n+\n+#include \"types.h\"\n+\n+struct nftrace_record {\n+\tuint64 type;\n+\tuint64 a[4];\n+};\n+\n+void nftrace_commit_point(const struct nftrace_record *record);\n+void nftrace_page_alloc(uint64 pa, uint64 free_pages, uint64 used_pages);\n+void nftrace_page_free(uint64 pa, uint64 free_pages, uint64 used_pages);\n+void nftrace_allocator_state(uint64 free_pages, uint64 used_pages);\n+void nftrace_proc_fork(uint64 parent, uint64 child);\n+void nftrace_sched_switch(uint64 from_task, uint64 to_task, uint64 from_pid, uint64 to_pid);\n+\n+#endif\ndiff --git a/os/proc.c b/os/proc.c\nindex 9187793..95af12e 100644\n--- a/os/proc.c\n+++ b/os/proc.c\n@@ -4,6 +4,7 @@\n #include \"trap.h\"\n #include \"vm.h\"\n #include \"queue.h\"\n+#include \"nftrace.h\"\n \n struct proc pool[NPROC];\n __attribute__((aligned(16))) char kstack[NPROC][PAGE_SIZE];\n@@ -127,6 +128,7 @@ void scheduler()\n \t\ttracef(\"swtich to proc %d\", p - pool);\n \t\tp->state = RUNNING;\n \t\tcurrent_proc = p;\n+\t\tnftrace_sched_switch((uint64)&idle, (uint64)p, (uint64)-1, p->pid);\n \t\tswtch(&idle.context, &p->context);\n \t}\n }\n@@ -143,6 +145,7 @@ void sched()\n \tstruct proc *p = curr_proc();\n \tif (p->state == RUNNING)\n \t\tpanic(\"sched running\");\n+\tnftrace_sched_switch((uint64)p, (uint64)&idle, p->pid, (uint64)-1);\n \tswtch(&p->context, &idle.context);\n }\n \n@@ -194,6 +197,7 @@ int fork()\n \tnp->parent = p;\n \tnp->state = RUNNABLE;\n \tadd_task(np);\n+\tnftrace_proc_fork(p->pid, np->pid);\n \treturn np->pid;\n }\n \ndiff --git a/os/vm.c b/os/vm.c\nindex b315495..af83760 100644\n--- a/os/vm.c\n+++ b/os/vm.c\n@@ -2,6 +2,12 @@\n #include \"defs.h\"\n #include \"riscv.h\"\n \n+__attribute__((noinline))\n+void nodefusion_pagetable_map(uint64 va, uint64 pa, uint64 flags)\n+{\n+\t__asm__ volatile(\"\" : : \"r\"(va), \"r\"(pa), \"r\"(flags) : \"memory\");\n+}\n+\n pagetable_t kernel_pagetable;\n \n extern char e_text[]; // kernel.ld sets this to end of kernel code.\n@@ -126,6 +132,7 @@ int mappages(pagetable_t pagetable, uint64 va, uint64 size, uint64 pa, int perm)\n \t\t\treturn -1;\n \t\t}\n \t\t*pte = PA2PTE(pa) | perm | PTE_V;\n+\t\tnodefusion_pagetable_map(a, pa, perm | PTE_V);\n \t\tif (a == last)\n \t\t\tbreak;\n \t\ta += PGSIZE;\n@@ -375,4 +382,3 @@ uint64 uvmdealloc(pagetable_t pagetable, uint64 oldsz, uint64 newsz)\n \n         return newsz;\n }\n-\n",
    "kernel_elf_sha256": "0c5a83dd5a1f36dc423518308ac00d31a7466376bd661547ec5f79fb039ddb58",
    "user_commit": "1733f460c596b013b1c509ad42afa428640783b0",
    "user_patch": "diff --git a/CMakeLists.txt b/CMakeLists.txt\nindex f5a9fac..ab1986d 100644\n--- a/CMakeLists.txt\n+++ b/CMakeLists.txt\n@@ -15,12 +15,12 @@ set(ASM_DIR asm)\n set(BIN_DIR bin)\n \n # Toolchain\n-set(PREFIX ${ARCH}-linux-musl-)\n+set(PREFIX ${ARCH}-linux-musl- CACHE STRING \"Cross compiler prefix\")\n \n if (${ARCH} STREQUAL riscv32)\n-    set(CMAKE_C_FLAGS       \"-march=rv32imac -mabi=ilp32 -mcmodel=medany\")\n+    set(CMAKE_C_FLAGS       \"-march=rv32imac_zicsr_zifencei -mabi=ilp32 -mcmodel=medany\")\n elseif (${ARCH} STREQUAL riscv64)\n-    set(CMAKE_C_FLAGS       \"-march=rv64imac -mabi=lp64 -mcmodel=medany\")\n+    set(CMAKE_C_FLAGS       \"-march=rv64imac_zicsr_zifencei -mabi=lp64 -mcmodel=medany\")\n else()\n     message(\"Unsupported arch: ${ARCH}\")\n endif ()\ndiff --git a/Makefile b/Makefile\nindex be632ac..64f1ab6 100644\n--- a/Makefile\n+++ b/Makefile\n@@ -7,15 +7,16 @@ app_dir = src\n elf_dir := build/$(ARCH)\n bin_dir := build/bin\n out_dir := target\n-cmake_build_args := -DARCH=$(ARCH) -DCHAPTER=$(CHAPTER)\n+TOOLPREFIX ?= $(ARCH)-linux-musl-\n+cmake_build_args := -DARCH=$(ARCH) -DCHAPTER=$(CHAPTER) -DPREFIX=$(TOOLPREFIX)\n ifeq ($(MODE), release)\n cmake_build_args += -DCMAKE_BUILD_TYPE=Release\n else ifeq ($(MODE), debug)\n cmake_build_args += -DCMAKE_BUILD_TYPE=Debug\n endif\n \n-OBJCOPY := $(ARCH)-linux-musl-objcopy\n-OBJDUMP := $(ARCH)-linux-musl-objdump\n+OBJCOPY := $(TOOLPREFIX)objcopy\n+OBJDUMP := $(TOOLPREFIX)objdump\n CP := cp\n CH_TESTS :=  \n \ndiff --git a/src/ch6b_exec.c b/src/ch6b_exec.c\nindex 1a1d9c6..b67cf35 100644\n--- a/src/ch6b_exec.c\n+++ b/src/ch6b_exec.c\n@@ -5,7 +5,7 @@\n int main()\n {\n \tchar *_argv[] = {\n-\t\t\"(*o*)\", \"(>.<)\", \"(O.O)\", \"(QwQ)\", \"orz\", \"没有了呀\"\n+\t\t\"(*o*)\", \"(>.<)\", \"(O.O)\", \"(QwQ)\", \"orz\", \"没有了呀\", NULL\n \t};\n \texec(\"ch6b_args\", _argv);\n \treturn 0;\ndiff --git a/src/ch6b_filetest_simple.c b/src/ch6b_filetest_simple.c\nindex 062cecf..a27e982 100644\n--- a/src/ch6b_filetest_simple.c\n+++ b/src/ch6b_filetest_simple.c\n@@ -15,7 +15,9 @@ int main()\n \tfd = open(filea, O_RDONLY);\n \tassert(fd > 0);\n \tchar buf[16];\n-\tread(fd, buf, 16);\n+\tint nread = read(fd, buf, sizeof(buf) - 1);\n+\tassert_eq(nread, strlen(s));\n+\tbuf[nread] = '\\0';\n \tclose(fd);\n \tassert(strcmp(s, buf) == 0);\n \tputs(\"file_test passed!\");\ndiff --git a/src/ch6b_usertest.c b/src/ch6b_usertest.c\nindex cdd9fc8..1cb5f3a 100644\n--- a/src/ch6b_usertest.c\n+++ b/src/ch6b_usertest.c\n@@ -11,7 +11,7 @@ const char *TESTS[] = {\n \t\"ch3b_sleep1\\0\",      \"ch3b_yield0\\0\",\t  \"ch3b_yield1\\0\",\n \t\"ch3b_yield2\\0\",      \"ch5b_getpid\\0\",\t  \"ch5b_forktest0\\0\",\n \t\"ch5b_forktest1\\0\",   \"ch5b_forktest2\\0\", \"ch5b_exit\\0\",\n-\t\"ch6b_filetest\\0\",    \"ch6b_exec\\0\",\n+\t\"ch6b_filetest_simple\\0\",    \"ch6b_exec\\0\",\n };\n \n int main()\ndiff --git a/src/ch7b_usertest.c b/src/ch7b_usertest.c\nindex 1f634d4..8bfc7c8 100644\n--- a/src/ch7b_usertest.c\n+++ b/src/ch7b_usertest.c\n@@ -10,7 +10,7 @@ const char *TESTS[] = {\n \t\"ch3b_sleep1\\0\",      \"ch3b_yield0\\0\",\t  \"ch3b_yield1\\0\",\n \t\"ch3b_yield2\\0\",      \"ch5b_exit\\0\",\t  \"ch5b_getpid\\0\",\n \t\"ch5b_forktest0\\0\",   \"ch5b_forktest1\\0\", \"ch5b_forktest2\\0\",\n-\t\"ch5b_exit\\0\",\t      \"ch6b_filetest\\0\",  \"ch6b_exec\\0\",\n+\t\"ch5b_exit\\0\",\t      \"ch6b_filetest_simple\\0\",  \"ch6b_exec\\0\",\n \t\"ch7b_pipetest\\0\",\n };\n \ndiff --git a/src/ch8b_usertest.c b/src/ch8b_usertest.c\nindex 1cce5ce..f088c38 100644\n--- a/src/ch8b_usertest.c\n+++ b/src/ch8b_usertest.c\n@@ -10,9 +10,9 @@ const char *TESTS[] = {\n \t\"ch3b_sleep1\\0\",        \"ch3b_yield0\\0\",      \"ch3b_yield1\\0\",\n \t\"ch3b_yield2\\0\",        \"ch5b_getpid\\0\",      \"ch5b_forktest0\\0\",\n \t\"ch5b_forktest1\\0\",     \"ch5b_forktest2\\0\",   \"ch5b_exit\\0\",\n-\t\"ch6b_filetest\\0\",      \"ch6b_exec\\0\",        \"ch7b_pipetest\\0\",\n+\t\"ch6b_filetest_simple\\0\",      \"ch6b_exec\\0\",        \"ch7b_pipetest\\0\",\n \t\"ch8b_mpsc_sem\\0\",\n-\t\"ch8b_mut_phi_din.c\",   \"ch8b_mut_race\\0\",    \"ch8b_sync_sem\\0\",\n+\t   \"ch8b_mut_race\\0\",    \"ch8b_sync_sem\\0\",\n \t\"ch8b_test_condvar\\0\",  \"ch8b_threads_arg\\0\", \"ch8b_threads\\0\",      \n \t\"ch8b_spin_mut_race\\0\", \"ch8b_mut_phi_din\\0\",\n };\n",
    "selected_apps": {
      "ch2b_exit": "aa7aaa87e951156e8d8aada225a8e26ec4da4a84a3be3f6f575d71bc2725b3de",
      "ch2b_hello_world": "c1d34a4a957c1ddf6258fb25560925427b7d896a35fe3ed555a3d118245d55c1",
      "ch2b_power": "b3f1254b033a960e3e042f5e46e1307221734e61059472b9d7d172f72a83e842",
      "ch3b_sleep": "e0dbdf0b7809a16d4d569ae703f69ce9b74efb1e613062fbfab8e3048c856c37",
      "ch3b_sleep1": "ba4571e02bbd2016baaaeca35ba9fc7241da7a4f403cdb57b66ae3ddc7a6e968",
      "ch3b_yield0": "c1e2013e3ed101e4808c924b764ba58f8805e8301c4be9aa72dde598c0f2417c",
      "ch3b_yield1": "7342d736f1ea41c9c430c44bf0f28a1e286400e884d407566e78b98259b6df2e",
      "ch3b_yield2": "3885b238952fb44bec95218c587ed4230b214ae6521579499edad4c12e609662",
      "ch5b_exec_simple": "de491567279bf75d9c3d25030cf244ae9055938d960e3e23af584deda99103ab",
      "ch5b_exit": "769853c03108507318e5b8c15fa2786f5c3e76db3ef529a965c11b006d0066ed",
      "ch5b_forktest0": "dc2feab1411f7017ef8ed6819edd50450b16e69df8a9ef89e71884a6f3fb73a1",
      "ch5b_forktest1": "bdf574d97384b3adb7302d25a34e5dc55eb9e380b96d7ae50f43cde0797ebe24",
      "ch5b_forktest2": "8b7e7656b699cfd8cd10586e05605e907bfd253eb9ca38b6d7ff6c6c2da2911f",
      "ch5b_getpid": "78a9a884f2e2d14d7a4ba236c60cc25d305cbff5447c4c9627feac1778cbbeec",
      "ch5b_usertest": "ae3194bf497853e00fa60636af7f2115832b5268234381eeb8caeee1d3bc4619",
      "usershell": "5b21c877186b45b6c231bcfb0132f387e5ecc9a10a853cb06702a60d84746bc1"
    },
    "reference_kernel_elf_sha256": "b8cd601a84b58b6b7b75a57fbfd81034d69b496258e6ac88610108031f261f66",
    "commands": [
      {
        "argv": [
          "/home/joseph/nf/venv313/bin/python",
          "/home/joseph/nf/education-2026A-20260927/build-ch5-observed.py"
        ],
        "cwd": "/home/joseph/nf/education-2026A-20260927",
        "driver_sha256": "1a7cdf7d354a829d6f1c68f68c91937bb02afbfe22352f876d70313d7bfbf94e",
        "first_course_result": {
          "chapter": 5,
          "mode": "positive",
          "test_commit": "1733f460c596b013b1c509ad42afa428640783b0",
          "bios": "default",
          "status": "PASS",
          "kernel_commit": "386f10c55d0285273b78df19c4607c0f475e17a2",
          "test_patch_sha256": "d553d1307bd8e75060b09c403666435731d053075cee9e54b16396975380e6c6",
          "riscv64-unknown-elf-gcc": "riscv64-unknown-elf-gcc (Debian 14.2.0-19) 14.2.0",
          "qemu-system-riscv64": "QEMU emulator version 10.2.2",
          "base": 1,
          "kernel_sha256": "f876600fc8112b9974087845e11269c325563b26e545d7a503492cc1adbd20b6",
          "qemu_command": [
            "qemu-system-riscv64",
            "-nographic",
            "-machine",
            "virt",
            "-m",
            "128M",
            "-smp",
            "1",
            "-bios",
            "default",
            "-kernel",
            "build/kernel"
          ],
          "qemu_exit": 0,
          "stopped_after_suite": true
        }
      },
      {
        "operation": "copy_reference_user_bins",
        "source": "/home/joseph/nf/education-2026A-20260927/ucore-ch5/user/target/bin",
        "destination": "/home/joseph/nf/education-2026A-20260927/ucore-ch5-observed/user/target/bin",
        "sha256": {
          "ch2b_exit": "aa7aaa87e951156e8d8aada225a8e26ec4da4a84a3be3f6f575d71bc2725b3de",
          "ch2b_hello_world": "c1d34a4a957c1ddf6258fb25560925427b7d896a35fe3ed555a3d118245d55c1",
          "ch2b_power": "b3f1254b033a960e3e042f5e46e1307221734e61059472b9d7d172f72a83e842",
          "ch3b_sleep": "e0dbdf0b7809a16d4d569ae703f69ce9b74efb1e613062fbfab8e3048c856c37",
          "ch3b_sleep1": "ba4571e02bbd2016baaaeca35ba9fc7241da7a4f403cdb57b66ae3ddc7a6e968",
          "ch3b_yield0": "c1e2013e3ed101e4808c924b764ba58f8805e8301c4be9aa72dde598c0f2417c",
          "ch3b_yield1": "7342d736f1ea41c9c430c44bf0f28a1e286400e884d407566e78b98259b6df2e",
          "ch3b_yield2": "3885b238952fb44bec95218c587ed4230b214ae6521579499edad4c12e609662",
          "ch5b_exec_simple": "de491567279bf75d9c3d25030cf244ae9055938d960e3e23af584deda99103ab",
          "ch5b_exit": "769853c03108507318e5b8c15fa2786f5c3e76db3ef529a965c11b006d0066ed",
          "ch5b_forktest0": "dc2feab1411f7017ef8ed6819edd50450b16e69df8a9ef89e71884a6f3fb73a1",
          "ch5b_forktest1": "bdf574d97384b3adb7302d25a34e5dc55eb9e380b96d7ae50f43cde0797ebe24",
          "ch5b_forktest2": "8b7e7656b699cfd8cd10586e05605e907bfd253eb9ca38b6d7ff6c6c2da2911f",
          "ch5b_getpid": "78a9a884f2e2d14d7a4ba236c60cc25d305cbff5447c4c9627feac1778cbbeec",
          "ch5b_usertest": "ae3194bf497853e00fa60636af7f2115832b5268234381eeb8caeee1d3bc4619",
          "usershell": "5b21c877186b45b6c231bcfb0132f387e5ecc9a10a853cb06702a60d84746bc1"
        }
      },
      {
        "argv": [
          "make",
          "build",
          "LOG=info",
          "CHAPTER=5",
          "INIT_PROC=ch5b_usertest"
        ],
        "cwd": "/home/joseph/nf/education-2026A-20260927/ucore-ch5-observed"
      },
      {
        "argv": [
          "qemu-system-riscv64",
          "-nographic",
          "-machine",
          "virt",
          "-m",
          "128M",
          "-smp",
          "1",
          "-bios",
          "default",
          "-kernel",
          "build/kernel"
        ],
        "cwd": "/home/joseph/nf/education-2026A-20260927/ucore-ch5-observed"
      }
    ],
    "driver_sha256": "233a3acda8a71a5f7aea59fd9e200c2489a4fed8222db9ab08888111b394c24f",
    "patches": [
      {
        "path": "/home/joseph/nf/education-2026A-20260927/ucore-2026a-build.patch",
        "sha256": "47950de22450332ea265b179a03ce9bc9b12a1bc83629941f3c27ec08d2ffd9e"
      },
      {
        "path": "/home/joseph/nf/education-2026A-20260927/ucore-2026a-ch5-observation.patch",
        "sha256": "83ca8a9a4185afb98c31def90011e891881e5801adb1446b5494f205ebf9b664"
      }
    ],
    "first_build": {
      "directory": "/home/joseph/nf/education-2026A-20260927/ucore-ch5-observed-first-build",
      "kernel_elf_sha256": "f876600fc8112b9974087845e11269c325563b26e545d7a503492cc1adbd20b6",
      "selected_apps": {
        "ch5b_exec_simple": "d5b65cb54c77dc4e998b2f6d766b1b290a6d56699d1c4056669f8120e94fcf6d",
        "ch5b_exit": "9a2153dfbf3f0f6f1d60c42598f9cda4c43fc9bf97cac1beb962f88acfff2aa3",
        "ch5b_forktest0": "94fc561d2bfb61a38bcc82838298d68afee69a4a62b8543877651f3d7da3bddc",
        "ch5b_forktest1": "9aff055f6b51283069ff1a71e60cdb3edf61f79ea2df960bf4c7d425511fc82d",
        "ch5b_forktest2": "31eec0a1881080c65c9fe5896bfedcae781b98b0bf6bf72e68b4b6465ad45b96",
        "ch5b_getpid": "66de916ae7e1d5cdc756c60b9463db851d9d0960a0122f7a58c2750e146f176e",
        "ch5b_usertest": "af0640f06ebd698ca3d0d99ff867e69057dba0afc6c72111e6da1e571940c056",
        "ch3b_sleep": "e6e05f9f0fa3c25c1c59dc44b9835b156d1222bb708b8736e32cd47bee2317c1",
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  "qemu_command": "cd \"/home/joseph/nf/education-2026A-20260927/ucore-ch5-observed\" && exec qemu-system-riscv64 -machine virt -bios default -kernel build/kernel -m 128M -smp 1 -nographic -qmp tcp:127.0.0.1:45807,server=on,wait=off -plugin /home/joseph/nf/education-2026A-20260927/tool/nodefusion/plugin/libnf.so,out=/home/joseph/nf/education-2026A-20260927/runs/ucore-2026A-ch5-observed/trace.nfb,sample=200000,snap=200000,maxram=268435456,returns=1,snapstart=0,bootsnap=0,ramsize=134217728,watch=/home/joseph/nf/education-2026A-20260927/runs/ucore-2026A-ch5-observed/watchlist.txt -icount shift=3",
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}