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24beb34de63c54fd2a0243cd689a46d39fdc4920
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Moe Charm (CI) 24beb34de6 Fix: Phase 7-1.2 - Page boundary SEGV in fast free path 
## Problem
`bench_random_mixed` crashed with SEGV when freeing malloc allocations
at page boundaries (e.g., ptr=0x7ffff6e00000, ptr-1 unmapped).

## Root Cause
Phase 7 fast free path reads 1-byte header at `ptr-1` without checking
if memory is accessible. When malloc returns page-aligned pointer with
previous page unmapped, reading `ptr-1` causes SEGV.

## Solution
Added `hak_is_memory_readable(ptr-1)` check BEFORE reading header in
`core/tiny_free_fast_v2.inc.h`. Page-boundary allocations route to
slow path (dual-header dispatch) which correctly handles malloc via
__libc_free().

## Verification
- bench_random_mixed (1024B): SEGV → 692K ops/s ✅
- bench_random_mixed (2048B/4096B): SEGV → 697K/643K ops/s ✅
- All sizes stable across 3 runs

## Performance Impact
<1% overhead (mincore() only on fast path miss, ~1-3% of frees)

## Related
- Phase 7-1.1: Dual-header dispatch (Task Agent)
- Phase 7-1.2: Page boundary safety (this fix)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-08 03:46:35 +09:00
..
box
Fix: Phase 7-1.2 - Page boundary SEGV in fast free path
2025-11-08 03:46:35 +09:00
superslab
Phase 7-1 PoC: Region-ID Direct Lookup (+39%~+436% improvement!)
2025-11-08 03:18:17 +09:00
hakmem_ace_controller.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_ace_controller.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_ace_metrics.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_ace_metrics.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_ace_stats.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_ace_stats.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_ace_ucb1.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_ace_ucb1.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_ace.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_ace.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_batch.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_batch.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_bigcache.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_bigcache.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_build_flags.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_config.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_config.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_debug.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_debug.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_elo.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_elo.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_evo.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_evo.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_features.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_internal.h
Fix: SuperSlab guess loop & header magic SEGV (random_mixed/mid_large_mt)
2025-11-07 17:34:24 +09:00
hakmem_l25_pool.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_l25_pool.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_learn_log.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_learn_log.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_learner.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_learner.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_libc.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_mid_mt.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_mid_mt.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_p2.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_p2.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_policy.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_policy.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_pool.c
Phase 1: Box Theory refactoring + include reduction
2025-11-06 21:54:12 +09:00
hakmem_pool.c.bak2
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_pool.c.bak3
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_pool.c.refactored
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_pool.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_prof.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_prof.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_site_rules.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_site_rules.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_size_hist.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_size_hist.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_sizeclass_dist.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_sizeclass_dist.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_super_registry.c
Phase 6-2.4: Fix SuperSlab free SEGV: remove guess loop and add memory readability check; add registry atomic consistency (base as _Atomic uintptr_t with acq/rel); add debug toggles (SUPER_REG_DEBUG/REQTRACE); update CURRENT_TASK with results and next steps; capture suite results.
2025-11-07 18:07:48 +09:00
hakmem_super_registry.h
Phase 6-2.4: Fix SuperSlab free SEGV: remove guess loop and add memory readability check; add registry atomic consistency (base as _Atomic uintptr_t with acq/rel); add debug toggles (SUPER_REG_DEBUG/REQTRACE); update CURRENT_TASK with results and next steps; capture suite results.
2025-11-07 18:07:48 +09:00
hakmem_sys.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_sys.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_syscall.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_syscall.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_alloc_new.inc
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_tiny_alloc_v3.inc
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_alloc.inc
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_tiny_assist.inc.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_background.inc
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_batch_refill.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_bg_bin.inc.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_bg_spill.c
Phase 6-2.3~6-2.5: Critical bug fixes + SuperSlab optimization (WIP)
2025-11-07 20:31:01 +09:00
hakmem_tiny_bg_spill.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_bump.inc.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_tiny_config.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_config.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_tiny_drain_ema.inc.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_fastcache.inc.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_free.inc
Fix: CRITICAL double-allocation bug in trc_linear_carve()
2025-11-08 01:18:37 +09:00
hakmem_tiny_free.inc.bak
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_tiny_hot_pop_v4.inc.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_hot_pop.inc.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_hotmag.inc.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_init.inc
Phase 6-2.3~6-2.5: Critical bug fixes + SuperSlab optimization (WIP)
2025-11-07 20:31:01 +09:00
hakmem_tiny_intel.inc
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_lifecycle.inc
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_tiny_magazine.c
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_tiny_magazine.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_metadata.inc
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_mini_mag.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_query_api.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_query.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_refill_p0.inc.h
Perf: Optimize remote queue drain to skip when empty
2025-11-08 01:44:24 +09:00
hakmem_tiny_refill.inc.h
Phase 6-2.6: Fix slab_data_start() consistency in refill/validation paths
2025-11-07 22:34:24 +09:00
hakmem_tiny_registry_api.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_registry.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_remote_target.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_remote_target.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_remote.inc
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_rss_api.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_rss.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_sfc.c
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_tiny_simple.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_simple.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_slab_mgmt.inc
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_slow.inc
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_tiny_smallmag.inc.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_tiny_ss_target.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_ss_target.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_stats_api.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_tiny_stats.c
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_tiny_stats.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_superslab_constants.h
Phase 6-2.5: Fix SuperSlab alignment bug + refactor constants
2025-11-07 21:45:20 +09:00
hakmem_tiny_superslab.c
Fix: CRITICAL double-allocation bug in trc_linear_carve()
2025-11-08 01:18:37 +09:00
hakmem_tiny_superslab.h
Phase 6-2.8: SuperSlab modular refactoring (665 lines → 104 lines)
2025-11-07 23:05:33 +09:00
hakmem_tiny_tls_list.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_tls_ops.h
Phase 6-2.3~6-2.5: Critical bug fixes + SuperSlab optimization (WIP)
2025-11-07 20:31:01 +09:00
hakmem_tiny_ultra_front.inc.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_tiny_ultra_simple.inc
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
hakmem_tiny.c
Phase 6-2.6: Fix slab_data_start() consistency in refill/validation paths
2025-11-07 22:34:24 +09:00
hakmem_tiny.h
Phase 7-1 PoC: Region-ID Direct Lookup (+39%~+436% improvement!)
2025-11-08 03:18:17 +09:00
hakmem_trace.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_ucb1.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_whale.c
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem_whale.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
hakmem.c
Phase 6-2.4: Fix SuperSlab free SEGV: remove guess loop and add memory readability check; add registry atomic consistency (base as _Atomic uintptr_t with acq/rel); add debug toggles (SUPER_REG_DEBUG/REQTRACE); update CURRENT_TASK with results and next steps; capture suite results.
2025-11-07 18:07:48 +09:00
hakmem.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
mid_tcache.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
slab_handle.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
tiny_alloc_fast_sfc.inc.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
tiny_alloc_fast.inc.h
Phase 7-1 PoC: Region-ID Direct Lookup (+39%~+436% improvement!)
2025-11-08 03:18:17 +09:00
tiny_api.h
Phase 1: Box Theory refactoring + include reduction
2025-11-06 21:54:12 +09:00
tiny_atomic.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
tiny_debug_ring.c
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
tiny_debug_ring.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
tiny_debug.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
tiny_fastcache.c
Phase 6-2.4: Fix SuperSlab free SEGV: remove guess loop and add memory readability check; add registry atomic consistency (base as _Atomic uintptr_t with acq/rel); add debug toggles (SUPER_REG_DEBUG/REQTRACE); update CURRENT_TASK with results and next steps; capture suite results.
2025-11-07 18:07:48 +09:00
tiny_fastcache.h
Phase 6-8: RDTSC cycle profiling - Critical bottleneck discovered!
2025-11-05 05:44:18 +00:00
tiny_free_fast_v2.inc.h
Fix: Phase 7-1.2 - Page boundary SEGV in fast free path
2025-11-08 03:46:35 +09:00
tiny_free_fast.inc.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
tiny_free_magazine.inc.h
Phase 1: Box Theory refactoring + include reduction
2025-11-06 21:54:12 +09:00
tiny_mmap_gate.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
tiny_publish.c
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
tiny_publish.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
tiny_ready_bg.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
tiny_ready.h
Phase 6-2.4: Fix SuperSlab free SEGV: remove guess loop and add memory readability check; add registry atomic consistency (base as _Atomic uintptr_t with acq/rel); add debug toggles (SUPER_REG_DEBUG/REQTRACE); update CURRENT_TASK with results and next steps; capture suite results.
2025-11-07 18:07:48 +09:00
tiny_refill_opt.h
Perf: Make diagnostic logging compile-time disabled in release builds
2025-11-08 01:46:37 +09:00
tiny_refill.h
Phase 6-2.4: Fix SuperSlab free SEGV: remove guess loop and add memory readability check; add registry atomic consistency (base as _Atomic uintptr_t with acq/rel); add debug toggles (SUPER_REG_DEBUG/REQTRACE); update CURRENT_TASK with results and next steps; capture suite results.
2025-11-07 18:07:48 +09:00
tiny_region_id.h
Phase 7-1.1: Fix 1024B crash (header validation + malloc fallback)
2025-11-08 03:35:07 +09:00
tiny_remote_bg.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
tiny_remote.c
Fix: CRITICAL double-allocation bug in trc_linear_carve()
2025-11-08 01:18:37 +09:00
tiny_remote.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
tiny_route.h
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
tiny_sticky.c
CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消
2025-11-07 01:27:04 +09:00
tiny_sticky.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00
tiny_superslab_alloc.inc.h
Fix: CRITICAL double-allocation bug in trc_linear_carve()
2025-11-08 01:18:37 +09:00
tiny_superslab_free.inc.h
Phase 7-1 PoC: Region-ID Direct Lookup (+39%~+436% improvement!)
2025-11-08 03:18:17 +09:00
tiny_system.h
Phase 1: Box Theory refactoring + include reduction
2025-11-06 21:54:12 +09:00
tiny_tls_guard.h
Phase 6-2.6: Fix slab_data_start() consistency in refill/validation paths
2025-11-07 22:34:24 +09:00
tiny_tls.h
Debug Counters Implementation - Clean History
2025-11-05 12:31:14 +09:00