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833cadc0a1
This CL makes it possible to skip a dump if the crashing thread doesn't have any pointers to a given module. The concrete use case is WebView where we would like to skip generating microdump output when webview is unreferenced by the stack and thus cannot be responsible for the crash in a way that would be debuggable. The range of interesting addresses is chosen by examining the process mappings to find the one that contains a pointer that is known to be in the right shared object (i.e. an appropriately chosen function pointer) passed from the client. If the extracted stack does not contain a pointer in this range, then we do not generate a microdump. If the stack extraction fails, we still generate a microdump (without a stack). BUG=664460 Change-Id: If19406a13168264f7751245fc39591bd6cdbf5df Reviewed-on: https://chromium-review.googlesource.com/419476 Reviewed-by: Robert Sesek <rsesek@chromium.org> Reviewed-by: Primiano Tucci <primiano@chromium.org>
74 lines
3 KiB
C++
74 lines
3 KiB
C++
// Copyright (c) 2014, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef CLIENT_LINUX_DUMP_WRITER_COMMON_MAPPING_INFO_H_
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#define CLIENT_LINUX_DUMP_WRITER_COMMON_MAPPING_INFO_H_
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#include <limits.h>
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#include <list>
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#include <stdint.h>
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#include "google_breakpad/common/minidump_format.h"
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namespace google_breakpad {
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// One of these is produced for each mapping in the process (i.e. line in
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// /proc/$x/maps).
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struct MappingInfo {
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// On Android, relocation packing can mean that the reported start
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// address of the mapping must be adjusted by a bias in order to
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// compensate for the compression of the relocation section. The
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// following two members hold (after LateInit) the adjusted mapping
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// range. See crbug.com/606972 for more information.
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uintptr_t start_addr;
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size_t size;
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// When Android relocation packing causes |start_addr| and |size| to
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// be modified with a load bias, we need to remember the unbiased
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// address range. The following structure holds the original mapping
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// address range as reported by the operating system.
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struct {
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uintptr_t start_addr;
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uintptr_t end_addr;
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} system_mapping_info;
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size_t offset; // offset into the backed file.
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bool exec; // true if the mapping has the execute bit set.
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char name[NAME_MAX];
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};
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struct MappingEntry {
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MappingInfo first;
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uint8_t second[sizeof(MDGUID)];
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};
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// A list of <MappingInfo, GUID>
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typedef std::list<MappingEntry> MappingList;
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} // namespace google_breakpad
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#endif // CLIENT_LINUX_DUMP_WRITER_COMMON_MAPPING_INFO_H_
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