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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Serialization format for GWP ASan crashdata, written to the minidump using
// stream ID 0x4B6B0004.
syntax = "proto2";
package gwp_asan;
option optimize_for = LITE_RUNTIME;
message Crash {
enum ErrorType {
reserved 6;
// These should not be renumbered and should be kept in sync with
// AllocatorState::ErrorType in allocator_state.h
USE_AFTER_FREE = 0;
BUFFER_UNDERFLOW = 1;
BUFFER_OVERFLOW = 2;
DOUBLE_FREE = 3;
UNKNOWN = 4;
FREE_INVALID_ADDRESS = 5;
}
// Allocators with GWP-ASan support.
enum Allocator {
MALLOC = 0;
PARTITIONALLOC = 1;
}
// GWP-ASan mode that produced the crash report.
enum Mode {
UNSPECIFIED = 0;
CLASSIC = 1;
LIGHTWEIGHT_DETECTOR_BRP = 2;
LIGHTWEIGHT_DETECTOR_RANDOM = 3;
EXTREME_LIGHTWEIGHT_DETECTOR = 4;
}
message AllocationInfo {
repeated uint64 stack_trace = 1 [packed = true];
optional uint64 thread_id = 2;
}
optional ErrorType error_type = 1;
optional uint64 allocation_address = 2;
optional uint64 allocation_size = 3;
optional AllocationInfo allocation = 4;
optional AllocationInfo deallocation = 5;
// Records the bounds of the GWP-ASan allocator region.
optional uint64 region_start = 6;
optional uint64 region_size = 7;
// The invalid address that was free()d, if present.
optional uint64 free_invalid_address = 8;
// Set to true if metadata (allocation address and size, stack traces) was
// missing for the allocation involving this crash. This can occur when a
// use-after-free occurs after the metadata for the allocation has been
// deleted or a wild memory access occurs for a page that has no associated
// metadata.
optional bool missing_metadata = 9;
// Report an internal GWP-ASan error encountered in the crash handler while
// analyzing this crash.
optional string internal_error = 10;
optional Allocator allocator = 11;
optional Mode mode = 12;
}
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