| //===-- hwasan_flags.inc ----------------------------------------*- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Hwasan runtime flags. |
| // |
| //===----------------------------------------------------------------------===// |
| #ifndef HWASAN_FLAG |
| # error "Define HWASAN_FLAG prior to including this file!" |
| #endif |
| |
| // HWASAN_FLAG(Type, Name, DefaultValue, Description) |
| // See COMMON_FLAG in sanitizer_flags.inc for more details. |
| |
| HWASAN_FLAG(bool, verbose_threads, false, |
| "inform on thread creation/destruction") |
| HWASAN_FLAG(bool, tag_in_malloc, true, "") |
| HWASAN_FLAG(bool, tag_in_free, true, "") |
| HWASAN_FLAG(bool, print_stats, false, "") |
| HWASAN_FLAG(bool, halt_on_error, true, "") |
| HWASAN_FLAG(bool, atexit, false, "") |
| |
| // Test only flag to disable malloc/realloc/free memory tagging on startup. |
| // Tagging can be reenabled with __hwasan_enable_allocator_tagging(). |
| HWASAN_FLAG(bool, disable_allocator_tagging, false, "") |
| |
| // If false, use simple increment of a thread local counter to generate new |
| // tags. |
| HWASAN_FLAG(bool, random_tags, true, "") |
| |
| HWASAN_FLAG( |
| int, max_malloc_fill_size, 0, |
| "HWASan allocator flag. max_malloc_fill_size is the maximal amount of " |
| "bytes that will be filled with malloc_fill_byte on malloc.") |
| |
| HWASAN_FLAG(bool, free_checks_tail_magic, 1, |
| "If set, free() will check the magic values " |
| "to the right of the allocated object " |
| "if the allocation size is not a divident of the granule size") |
| HWASAN_FLAG( |
| int, max_free_fill_size, 0, |
| "HWASan allocator flag. max_free_fill_size is the maximal amount of " |
| "bytes that will be filled with free_fill_byte during free.") |
| HWASAN_FLAG(int, malloc_fill_byte, 0xbe, |
| "Value used to fill the newly allocated memory.") |
| HWASAN_FLAG(int, free_fill_byte, 0x55, |
| "Value used to fill deallocated memory.") |
| HWASAN_FLAG(int, heap_history_size, 1023, |
| "The number of heap (de)allocations remembered per thread. " |
| "Affects the quality of heap-related reports, but not the ability " |
| "to find bugs.") |
| HWASAN_FLAG(bool, export_memory_stats, true, |
| "Export up-to-date memory stats through /proc") |
| HWASAN_FLAG(int, stack_history_size, 1024, |
| "The number of stack frames remembered per thread. " |
| "Affects the quality of stack-related reports, but not the ability " |
| "to find bugs.") |
| |
| // Malloc / free bisection. Only tag malloc and free calls when a hash of |
| // allocation size and stack trace is between malloc_bisect_left and |
| // malloc_bisect_right (both inclusive). [0, 0] range is special and disables |
| // bisection (i.e. everything is tagged). Once the range is narrowed down |
| // enough, use malloc_bisect_dump to see interesting allocations. |
| HWASAN_FLAG(uptr, malloc_bisect_left, 0, |
| "Left bound of malloc bisection, inclusive.") |
| HWASAN_FLAG(uptr, malloc_bisect_right, 0, |
| "Right bound of malloc bisection, inclusive.") |
| HWASAN_FLAG(bool, malloc_bisect_dump, false, |
| "Print all allocations within [malloc_bisect_left, " |
| "malloc_bisect_right] range ") |
| |
| |
| // Exit if we fail to enable the AArch64 kernel ABI relaxation which allows |
| // tagged pointers in syscalls. This is the default, but being able to disable |
| // that behaviour is useful for running the testsuite on more platforms (the |
| // testsuite can run since we manually ensure any pointer arguments to syscalls |
| // are untagged before the call. |
| HWASAN_FLAG(bool, fail_without_syscall_abi, true, |
| "Exit if fail to request relaxed syscall ABI.") |
