mirror of
https://github.com/chromium/crashpad.git
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dbfcb5d032
Add a user-configurable cap on the amount of memory that is gathered by dereferencing thread stacks. (SyzyAsan stores a tremendously large number of pointers on the stack, so the dumps were ending up in the ~25M range.) Also reduce the range around pointers somewhat. Change-Id: I6bce57d86bd2f6a796e1580c530909e089ec00ed Reviewed-on: https://chromium-review.googlesource.com/338463 Reviewed-by: Mark Mentovai <mark@chromium.org>
138 lines
4.4 KiB
C++
138 lines
4.4 KiB
C++
// Copyright 2015 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "snapshot/win/thread_snapshot_win.h"
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#include <vector>
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#include "base/logging.h"
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#include "snapshot/capture_memory.h"
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#include "snapshot/win/cpu_context_win.h"
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#include "snapshot/win/capture_memory_delegate_win.h"
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#include "snapshot/win/process_reader_win.h"
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namespace crashpad {
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namespace internal {
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ThreadSnapshotWin::ThreadSnapshotWin()
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: ThreadSnapshot(),
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context_(),
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stack_(),
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teb_(),
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thread_(),
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initialized_() {
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}
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ThreadSnapshotWin::~ThreadSnapshotWin() {
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}
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bool ThreadSnapshotWin::Initialize(
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ProcessReaderWin* process_reader,
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const ProcessReaderWin::Thread& process_reader_thread,
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uint32_t* gather_indirectly_referenced_memory_bytes_remaining) {
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INITIALIZATION_STATE_SET_INITIALIZING(initialized_);
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thread_ = process_reader_thread;
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if (process_reader->GetProcessInfo().LoggingRangeIsFullyReadable(
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CheckedRange<WinVMAddress, WinVMSize>(thread_.stack_region_address,
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thread_.stack_region_size))) {
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stack_.Initialize(process_reader,
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thread_.stack_region_address,
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thread_.stack_region_size);
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} else {
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stack_.Initialize(process_reader, 0, 0);
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}
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if (process_reader->GetProcessInfo().LoggingRangeIsFullyReadable(
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CheckedRange<WinVMAddress, WinVMSize>(thread_.teb_address,
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thread_.teb_size))) {
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teb_.Initialize(process_reader, thread_.teb_address, thread_.teb_size);
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} else {
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teb_.Initialize(process_reader, 0, 0);
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}
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#if defined(ARCH_CPU_X86_64)
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if (process_reader->Is64Bit()) {
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context_.architecture = kCPUArchitectureX86_64;
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context_.x86_64 = &context_union_.x86_64;
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InitializeX64Context(process_reader_thread.context.native, context_.x86_64);
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} else {
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context_.architecture = kCPUArchitectureX86;
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context_.x86 = &context_union_.x86;
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InitializeX86Context(process_reader_thread.context.wow64, context_.x86);
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}
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#else
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context_.architecture = kCPUArchitectureX86;
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context_.x86 = &context_union_.x86;
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InitializeX86Context(process_reader_thread.context.native, context_.x86);
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#endif // ARCH_CPU_X86_64
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CaptureMemoryDelegateWin capture_memory_delegate(
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process_reader,
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thread_,
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&pointed_to_memory_,
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gather_indirectly_referenced_memory_bytes_remaining);
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CaptureMemory::PointedToByContext(context_, &capture_memory_delegate);
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if (gather_indirectly_referenced_memory_bytes_remaining) {
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CaptureMemory::PointedToByMemoryRange(stack_, &capture_memory_delegate);
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}
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INITIALIZATION_STATE_SET_VALID(initialized_);
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return true;
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}
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const CPUContext* ThreadSnapshotWin::Context() const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return &context_;
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}
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const MemorySnapshot* ThreadSnapshotWin::Stack() const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return &stack_;
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}
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uint64_t ThreadSnapshotWin::ThreadID() const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return thread_.id;
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}
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int ThreadSnapshotWin::SuspendCount() const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return thread_.suspend_count;
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}
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int ThreadSnapshotWin::Priority() const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return thread_.priority;
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}
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uint64_t ThreadSnapshotWin::ThreadSpecificDataAddress() const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return thread_.teb_address;
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}
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std::vector<const MemorySnapshot*> ThreadSnapshotWin::ExtraMemory() const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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std::vector<const MemorySnapshot*> result;
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result.reserve(1 + pointed_to_memory_.size());
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result.push_back(&teb_);
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std::copy(pointed_to_memory_.begin(),
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pointed_to_memory_.end(),
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std::back_inserter(result));
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return result;
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}
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} // namespace internal
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} // namespace crashpad
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