84 lines
3.7 KiB
C++
84 lines
3.7 KiB
C++
//===-- hwasan_flags.inc ----------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Hwasan runtime flags.
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//
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//===----------------------------------------------------------------------===//
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#ifndef HWASAN_FLAG
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# error "Define HWASAN_FLAG prior to including this file!"
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#endif
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// HWASAN_FLAG(Type, Name, DefaultValue, Description)
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// See COMMON_FLAG in sanitizer_flags.inc for more details.
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HWASAN_FLAG(bool, verbose_threads, false,
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"inform on thread creation/destruction")
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HWASAN_FLAG(bool, tag_in_malloc, true, "")
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HWASAN_FLAG(bool, tag_in_free, true, "")
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HWASAN_FLAG(bool, print_stats, false, "")
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HWASAN_FLAG(bool, halt_on_error, true, "")
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HWASAN_FLAG(bool, atexit, false, "")
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// Test only flag to disable malloc/realloc/free memory tagging on startup.
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// Tagging can be reenabled with __hwasan_enable_allocator_tagging().
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HWASAN_FLAG(bool, disable_allocator_tagging, false, "")
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// If false, use simple increment of a thread local counter to generate new
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// tags.
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HWASAN_FLAG(bool, random_tags, true, "")
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HWASAN_FLAG(
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int, max_malloc_fill_size, 0,
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"HWASan allocator flag. max_malloc_fill_size is the maximal amount of "
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"bytes that will be filled with malloc_fill_byte on malloc.")
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HWASAN_FLAG(bool, free_checks_tail_magic, 1,
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"If set, free() will check the magic values "
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"to the right of the allocated object "
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"if the allocation size is not a divident of the granule size")
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HWASAN_FLAG(
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int, max_free_fill_size, 0,
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"HWASan allocator flag. max_free_fill_size is the maximal amount of "
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"bytes that will be filled with free_fill_byte during free.")
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HWASAN_FLAG(int, malloc_fill_byte, 0xbe,
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"Value used to fill the newly allocated memory.")
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HWASAN_FLAG(int, free_fill_byte, 0x55,
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"Value used to fill deallocated memory.")
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HWASAN_FLAG(int, heap_history_size, 1023,
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"The number of heap (de)allocations remembered per thread. "
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"Affects the quality of heap-related reports, but not the ability "
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"to find bugs.")
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HWASAN_FLAG(bool, export_memory_stats, true,
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"Export up-to-date memory stats through /proc")
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HWASAN_FLAG(int, stack_history_size, 1024,
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"The number of stack frames remembered per thread. "
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"Affects the quality of stack-related reports, but not the ability "
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"to find bugs.")
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// Malloc / free bisection. Only tag malloc and free calls when a hash of
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// allocation size and stack trace is between malloc_bisect_left and
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// malloc_bisect_right (both inclusive). [0, 0] range is special and disables
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// bisection (i.e. everything is tagged). Once the range is narrowed down
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// enough, use malloc_bisect_dump to see interesting allocations.
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HWASAN_FLAG(uptr, malloc_bisect_left, 0,
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"Left bound of malloc bisection, inclusive.")
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HWASAN_FLAG(uptr, malloc_bisect_right, 0,
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"Right bound of malloc bisection, inclusive.")
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HWASAN_FLAG(bool, malloc_bisect_dump, false,
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"Print all allocations within [malloc_bisect_left, "
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"malloc_bisect_right] range ")
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// Exit if we fail to enable the AArch64 kernel ABI relaxation which allows
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// tagged pointers in syscalls. This is the default, but being able to disable
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// that behaviour is useful for running the testsuite on more platforms (the
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// testsuite can run since we manually ensure any pointer arguments to syscalls
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// are untagged before the call.
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HWASAN_FLAG(bool, fail_without_syscall_abi, true,
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"Exit if fail to request relaxed syscall ABI.")
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