File Manager

003 File Manager

Current Path: /usr/src/contrib/llvm-project/compiler-rt/lib/hwasan

usr / src / contrib / llvm-project / compiler-rt / lib / hwasan /

📁 ..
📄 hwasan.cpp(15.25 KB)
📄 hwasan.h(5.69 KB)
📄 hwasan.syms.extra(21 B)
📄 hwasan_allocator.cpp(13.71 KB)
📄 hwasan_allocator.h(3.26 KB)
📄 hwasan_blacklist.txt(282 B)
📄 hwasan_checks.h(4.04 KB)
📄 hwasan_dynamic_shadow.cpp(5.17 KB)
📄 hwasan_dynamic_shadow.h(838 B)
📄 hwasan_exceptions.cpp(2.68 KB)
📄 hwasan_flags.h(799 B)
📄 hwasan_flags.inc(3.27 KB)
📄 hwasan_globals.cpp(3.03 KB)
📄 hwasan_globals.h(1.85 KB)
📄 hwasan_interceptors.cpp(11.1 KB)
📄 hwasan_interceptors_vfork.S(409 B)
📄 hwasan_interface_internal.h(6.32 KB)
📄 hwasan_linux.cpp(15.83 KB)
📄 hwasan_malloc_bisect.h(1.67 KB)
📄 hwasan_mapping.h(2.01 KB)
📄 hwasan_memintrinsics.cpp(1.6 KB)
📄 hwasan_new_delete.cpp(2.29 KB)
📄 hwasan_poisoning.cpp(1.89 KB)
📄 hwasan_poisoning.h(756 B)
📄 hwasan_report.cpp(24.11 KB)
📄 hwasan_report.h(1.2 KB)
📄 hwasan_setjmp.S(2.81 KB)
📄 hwasan_tag_mismatch_aarch64.S(5.89 KB)
📄 hwasan_thread.cpp(3.9 KB)
📄 hwasan_thread.h(2.82 KB)
📄 hwasan_thread_list.cpp(442 B)
📄 hwasan_thread_list.h(6.2 KB)
📄 hwasan_type_test.cpp(918 B)

Editing: hwasan_allocator.h

//===-- hwasan_allocator.h --------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is a part of HWAddressSanitizer.
//
//===----------------------------------------------------------------------===//

#ifndef HWASAN_ALLOCATOR_H
#define HWASAN_ALLOCATOR_H

#include "sanitizer_common/sanitizer_allocator.h"
#include "sanitizer_common/sanitizer_allocator_checks.h"
#include "sanitizer_common/sanitizer_allocator_interface.h"
#include "sanitizer_common/sanitizer_allocator_report.h"
#include "sanitizer_common/sanitizer_common.h"
#include "sanitizer_common/sanitizer_ring_buffer.h"
#include "hwasan_poisoning.h"

#if !defined(__aarch64__) && !defined(__x86_64__)
#error Unsupported platform
#endif

namespace __hwasan {

struct Metadata {
  u32 requested_size : 31;  // sizes are < 2G.
  u32 right_aligned  : 1;
  u32 alloc_context_id;
};

struct HwasanMapUnmapCallback {
  void OnMap(uptr p, uptr size) const { UpdateMemoryUsage(); }
  void OnUnmap(uptr p, uptr size) const {
    // We are about to unmap a chunk of user memory.
    // It can return as user-requested mmap() or another thread stack.
    // Make it accessible with zero-tagged pointer.
    TagMemory(p, size, 0);
  }
};

static const uptr kMaxAllowedMallocSize = 2UL << 30;  // 2G

struct AP64 {
  static const uptr kSpaceBeg = ~0ULL;
  static const uptr kSpaceSize = 0x2000000000ULL;
  static const uptr kMetadataSize = sizeof(Metadata);
  typedef __sanitizer::VeryDenseSizeClassMap SizeClassMap;
  using AddressSpaceView = LocalAddressSpaceView;
  typedef HwasanMapUnmapCallback MapUnmapCallback;
  static const uptr kFlags = 0;
};
typedef SizeClassAllocator64<AP64> PrimaryAllocator;
typedef CombinedAllocator<PrimaryAllocator> Allocator;
typedef Allocator::AllocatorCache AllocatorCache;

void AllocatorSwallowThreadLocalCache(AllocatorCache *cache);

class HwasanChunkView {
 public:
  HwasanChunkView() : block_(0), metadata_(nullptr) {}
  HwasanChunkView(uptr block, Metadata *metadata)
      : block_(block), metadata_(metadata) {}
  bool IsAllocated() const;    // Checks if the memory is currently allocated
  uptr Beg() const;            // First byte of user memory
  uptr End() const;            // Last byte of user memory
  uptr UsedSize() const;       // Size requested by the user
  uptr ActualSize() const;     // Size allocated by the allocator.
  u32 GetAllocStackId() const;
  bool FromSmallHeap() const;
 private:
  uptr block_;
  Metadata *const metadata_;
};

HwasanChunkView FindHeapChunkByAddress(uptr address);

// Information about one (de)allocation that happened in the past.
// These are recorded in a thread-local ring buffer.
// TODO: this is currently 24 bytes (20 bytes + alignment).
// Compress it to 16 bytes or extend it to be more useful.
struct HeapAllocationRecord {
  uptr tagged_addr;
  u32  alloc_context_id;
  u32  free_context_id;
  u32  requested_size;
};

typedef RingBuffer<HeapAllocationRecord> HeapAllocationsRingBuffer;

void GetAllocatorStats(AllocatorStatCounters s);

} // namespace __hwasan

#endif // HWASAN_ALLOCATOR_H

003 File Manager

Editing: hwasan_allocator.h

Upload File

Create Folder