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* string_conversion: fix pointer mathMike Frysinger2019-08-053-2/+67
| | | | | | | | | | | | | | | | | | | | | | | Since target_ptr is of type uint16_t* already, we don't need to scale the byte count as the language does that for us. If it were void*, we would need this code, but it's not. In practice it's probably not a big deal due to how we preallocated memory: when converting UTF8->UTF16, we'd reserve the same number of code units, and UTF8 takes more code units per codepoint than UTF16, so the UTF16 vector is always oversized. When converting UTF32->UTF16, we also reserve the same number of code units, but since one UTF32 code unit could require two UTF16 code units (for U+10000 codepoints and higher), we would probably corrupt memory in the process. The APIs in this module don't seem to take into account that range in general, so for now I'm only fixing the memory corruption. Bug: google-breakpad:768 Change-Id: Ibfaea4e866733ff8d99b505e72c500bd40d11a74 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1732888 Reviewed-by: Mark Mentovai <mark@chromium.org>
* guid_creater: include string.h for memcpyMike Frysinger2019-08-041-0/+1
| | | | | | | Bug: google-breakpad:779 Change-Id: If0cfb036ee924178033c89d4dc3e2ce75ddd46f2 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1732887 Reviewed-by: Mark Mentovai <mark@chromium.org>
* minidump_processor: fix typo in BUS_ADRALNMike Frysinger2019-08-041-1/+1
| | | | | | | Bug: google-breakpad:787 Change-Id: I9f7144b3456abb750142eae9f989133bf4f27885 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1734586 Reviewed-by: Mark Mentovai <mark@chromium.org>
* arm64: strip PACs from link register valuesJoshua Peraza2019-07-232-1/+33
| | | | | | | | | | | | | | | | | | | | | | Pointer authentication codes are used to validate pointers against accidental or malicious modification by storing a hash of the address and a secret value in the pointer's unused, upper bits. The exact bits used may vary by implementation and depend on the size of the virtual address space of the target system, and whether other tagged pointer features are in use. Apple has implemented PACs in the Apple A12. https://developer.apple.com/documentation/security/preparing_your_app_to_work_with_pointer_authentication The documented method of stripping PACs from a pointer is to call ptrauth_strip(), which ultimately emits an `xpaci` instruction, but this option isn't available to the Breakpad processor not running on the device. Instead, this patch selects likely address bits from link register values by examining the address range of loaded modules. Change-Id: I054bd1a03605719937fc85dcc8d8b9fe927f44be Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1713650 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Improving the support for Fuchsia in Breakpad Processor.Ivan Penkov2019-07-125-7/+124
| | | | | | | | Now decoding the OS name and exception codes for Fuchsia. Still not decoding exception flags (can be added later, if needed). Change-Id: If66cb000828be18f0c1b35d1b1f52b3ca3e1fd67 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1699049 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Remove base_logging::LogMessageMark Mentovai2019-07-121-13/+1
| | | | | | | | | | | This is deprecated in the downstream consumer that it was introduced to support. This undoes b41ad66e93562. Change-Id: I3e0fa068b134014700128d1d75cae6a20d591d12 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1687125 Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
* Fix Windows symupload after PE-only MD refactor.Nelson Billing2019-07-011-1/+1
| | | | | | | | | - I think I previously fixed this for dump_syms, but must have missed the symupload one because it didn't have a gn target. Change-Id: Ibf4daa0dc874f329c2ee7c7b3d4de1ee6bc68d13 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1682717 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Explicitly LoadLibrary dbghelp.dll in symbol converter.Nelson Billing2019-06-281-0/+54
| | | | | | | | | | | | | | | | | | - This is a workaround to an issue with gn/clang build of Windows symbol converter where dbghelp.dll is loaded from system32/syswow64 instead of alongside the process exe. - Why do we care where dbghelp.dll is loaded from? Two considerations: 1. dbghelp.dll will only load symsrv.dll from the directory where it resides. 2. symsrv.dll requires a file called "symsrv.yes" to be in the directory where it resides in order to work with MS symbol stores. Therefore if we load dbghelp.dll from syswow64, then we must also ensure there is a symsrv.dll and symsrv.yes file in syswow64. Change-Id: Ia283a2c11e276c855a48157aa7be77897af4b02e Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1680670 Reviewed-by: Mark Mentovai <mark@chromium.org> Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
* Fix clang build warnings/errors for windows symbol converter.Nelson Billing2019-06-274-26/+25
| | | | | | Change-Id: Ib7f6e37af1466b5bed3e7d2921e0d9774394ad1e Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1680056 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Fix windows symbol converter blacklisting.Nelson Billing2019-06-251-2/+3
| | | | | | | | - Was attempting "full match" when we meant to do "partial match". Change-Id: Ia748a7fc8707e11f44c205e57f218f5f4bbc5612 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1676936 Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
* Fix dump_syms clang Windows build.Nelson Billing2019-06-253-23/+13
| | | | | | | | | - Put FileHeaderMachineToCpuString definition in header. - Remove extra semi-colon. Change-Id: I726ad0f73c57908576414fd828052dff09f5c51f Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1673142 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Fix breakpad client build.Nelson Billing2019-06-241-1/+1
| | | | | | | | - Was broken by a rename in http upload util code. Change-Id: I72c275fe45638c83e535901e79817893b00ee62e Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1673138 Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
* Add PE-only MD support to Windows symbol converter.Nelson Billing2019-06-2412-56/+314
| | | | | | | | | | | | | | | | - Only 64-bit PEs supported. - Re-add some scripts that were missed in initial move of code. - Change msdia120.dll dependency to msdia140.dll. - Add tests for Intel, AMD, and NVidia Microsoft Symbol Stores. - Windows symbol converter now attempts to fall back to PE-only metadata when it fails to locate a PDB. - Remove the 'binary' folder under converter_exe. Need to think more about how a deployment should look and what tool(s) to use in creating one. Change-Id: I52e42cbe5e759874a25114c2483e8b50d73fdf77 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1670098 Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
* Fix 'debug_file' in PESourceLineWriter.Nelson Billing2019-06-193-15/+29
| | | | | | | | | | | - Add a #define to testing.gyp to avoid warnings about TR1 deprecation. - PESourceLineWriter now reads debug_file from CodeView record instead of using code_file value. - Updated PE-only MD reading unit test. Change-Id: Ib4e6201df3e3fd651e160f310584b5a67b16c842 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1668347 Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
* Fix symbol converter after PE-only MD refactor.Nelson Billing2019-06-182-2/+2
| | | | | | Change-Id: Ib6d3359f6a8ad7e0d2c2d6a4e92af37bc451db28 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1666353 Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
* Fix common_windows.gyp.Nelson Billing2019-06-183-1/+1
| | | | | | | | | - Rename two files from '.cpp' to '.cc' and insert missing comma in between lines in source files list. Change-Id: I169a738b565f52292cb0292b34c4397e9dc05370 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1666351 Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
* Move Windows Symbol Converter to breakpadNelson Billing2019-06-1821-0/+3056
| | | | | | | | | | - First step, this is just enough to get it generating a msbuild project with GYP, which in turn can build the executable. - Tests need to be redesigned because there isn't an available server. Change-Id: I45440fd32b3ede29666c127703bcd441f0e4288e Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1661134 Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
* Mac upload_system_symbols: make dump of /Library/QuickTime optionalMark Mentovai2019-06-181-4/+16
| | | | | | | | /Library/QuickTime is gone in 10.15b2 19A487l. Change-Id: I927350a9cb383b93e8b18aef5f36c77bb67fede1 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1663996 Reviewed-by: Robert Sesek <rsesek@chromium.org>
* Mac upload_system_symbols: use log.Fatalf where formatting is desiredMark Mentovai2019-06-181-7/+7
| | | | | | Change-Id: I5623da3109feeb4b80137fa67501b8fd7aa5c8ec Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1663995 Reviewed-by: Robert Sesek <rsesek@chromium.org>
* Enable PE-only metadata dumping for 64bit (aka. PE32+ format) PEs files.Nelson Billing2019-06-1212-328/+1020
| | | | | | | | | | | | | | | | | - Implement in common_windows_lib-- added class "PESourceLineWriter". - Add command-line switch to tell dump_syms to use PESourceLineWriter. Symbol data created this way will contain information to correlate the module with ones found in minidumps, along with frame info that allows much higher quality stack-walking in those minidumps. - Significant refactor of PDBSourceLineWriter-- all code concerned with extracting metadata from PE files has been moved into utility functions. This is to allow sharing of this functionality with newly- added PESourceLineWriter. - Added a unit test to dump_syms for the PE-only scenario. Change-Id: If0855f05d424d32d23f484995be5f34232179a37 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1525325 Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
* Port new symbol upload API to Windows symupload tool.Nelson Billing2019-06-126-385/+853
| | | | | | | | | - CL for Linux change, including new documentation for API, at: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1422400/3 Change-Id: I579744fec74c64757b8bc31de63d7a07ef9a0f1f Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1487982 Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
* Removed unused includes/declarationsJoshua Peraza2019-06-112-4/+0
| | | | | | Change-Id: I2ada9f96efe97c25c885eef561af725418a46bec Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1652667 Reviewed-by: Mark Mentovai <mark@chromium.org>
* fix build failuresJoshua Peraza2019-06-114-0/+4
| | | | | | Change-Id: I9e745d2a4b3f780941ba286bbafa5d4169d172f7 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1653863 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Enable truncation of module rangesJoshua Peraza2019-06-1112-108/+484
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ELF modules are loaded in memory in several, possibly discontiguous, segments. If the holes between segments are large enough, other things, possibly other ELF modules may be mapped in that space. Crashpad records the range of modules as the base address of the lowest mapped segment to the high address of the highest mapped segment. This means that when one module is mapped into a hole in another, it appears to the Breakpad processor as overlapping modules. Module ranges are relevant to the Breakpad processor during stackwalking for identifying which module a particular program counter belongs to (i.e. mapping the address to a module's text segment). This patch addresses this issue of overlapping modules by truncating the range of the module with the lower base address. A typical module's text segment is the first loaded segment which would leave the text segment range unaffected. Module producers can restrict the size of holes in their ELF modules with the flag "-Wl,-z,max-page-size=4096", preventing other modules from being mapped in their address range. Properly contemplating ELF module address ranges would require extensions to the minidump format to encode any holes. crbug.com/crashpad/298 This patch also renames the concept of "shrinking down" (which truncated the upper of two overlapping ranges) to "truncate upper". Change-Id: I4599201f1e43918db036c390961f8b39e3af1849 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1646932 Reviewed-by: Mark Mentovai <mark@chromium.org>
* linux: fix broken testsJoshua Peraza2019-06-042-4/+4
| | | | | | | | Fixes errors for comparisons between signed and unsigned ints. Change-Id: I7ef151ba84a48a0c8cc449cfaf12b9fef775d5a7 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1642361 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Fix a build break with SDK 10.14.Ivan Penkov2019-05-291-2/+2
| | | | | | | | | | | | * Updated the minimal target version from 10.5 to 10.7. * Reference for the similar issue: https://github.com/uglide/RedisDesktopManager/issues/4284 Fix provided by Hiroyuki Komatsu. Change-Id: Ie08f8f6084e66d439d8b6282f1f4734b2dfe778f Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1633390 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Fix orphaned crash reports.John Z Wu2019-05-151-1/+13
| | | | | | | | | | | The path NSCachesDirectory may change across app updates and sometimes even across app launches. As a result, the Config-XXX files may end up with an outdated path to the associated minidump file. Change-Id: I0befde26b2ac406c154ce7c7e9be0063ee99892d Bug:850379 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1592561 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Increase timeout of HTTPMultipartUpload from 10s to 60s.John Z Wu2019-05-131-1/+1
| | | | | | | | | | | | | | | This, hopefully, will reduce occurrences of UnfinishedReportUploads. It will not eliminate it completely because uploads are never retried if they fail. 60s is actually the default value. Before iOS6, 240s was the default and minimum applied to requests with a body. Reference: https://developer.apple.com/documentation/foundation/nsmutableurlrequest/1414063-timeoutinterval?language=objc Bug:850379 Change-Id: I2f16fda7d7e8cbb8b8a6fc917111d9f646fbdad0 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1609876 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Linux breakpad_unittests: fix ThreadSanitizer problemsMark Mentovai2019-04-265-9/+52
| | | | | | | | | | | | | | | | Some tests were failing because they had expectations about the number of threads in a process, but TSan, and in some cases, ASan, introduce their own threads. Where a sanitizer affects this, the expectations are now used as minimum thread counts, not exact thread counts. See https://www.brooklinen.com/blogs/brookliving/best-thread-count-for-sheets. These problems were detected by ThreadSanitizer at https://logs.chromium.org/logs/chromium/buildbucket/cr-buildbucket.appspot.com/8915151099544583616/+/steps/breakpad_unittests__with_patch_/0/stdout Bug: chromium:949098 Change-Id: Ie40f1766bea27e9bcb112bf9e0b8b846fb343012 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1585948 Reviewed-by: Robert Sesek <rsesek@chromium.org>
* Linux MinidumpWriter: fix stack-use-after-scope violationMark Mentovai2019-04-261-2/+4
| | | | | | | | | | | | | | | | | | One form of google_breakpad::WriteMinidump() passed MappingList and AppMemoryList objects by reference to a MinidumpWriter object, instantiating them directly as constructor parameters. The MinidumpWriter stored these objects internally as references, and the underlying objects went out of scope after MinidumpWriter construction. The MinidumpWriter outlived them, causing a violation on any attempt to access them following construction. This bug was detected by AddressSanitizer at https://logs.chromium.org/logs/chromium/buildbucket/cr-buildbucket.appspot.com/8915150848087289472/+/steps/breakpad_unittests__with_patch_/0/stdout Bug: chromium:949098 Change-Id: I072ea9f1b64e1eae3e89d4a2b158764ff7970db5 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1585946 Reviewed-by: Robert Sesek <rsesek@chromium.org>
* [Breakpad iOS] Add a callback on report upload completion.Olivier Robin2019-04-236-23/+88
| | | | | | | | | | | | | This CL adds a result callback on report upload completion. On failure, Breakpad deletes the configuration file and does retry to upload a report. Using this callback, the client will be able to log some metrics and to act on upload failure. Bug: 954175 Change-Id: I95a3264b65d4c06ba5d8dde8377440d23f1e2081 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1572661 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Make breakpad_unittests work with Chrome's test runner instead of gtest'sMark Mentovai2019-04-193-3/+13
| | | | | | | | | | | | | | | | | | | Chrome's test runner on Linux installs its own StackDumpSignalHandler which swallows signals and doesn't re-raise them. This is sloppy, but apparently there are reasons (https://crbug.com/551681). For breakpad_unittests, it causes problems where a test process expects (via waitpid()) to observe a child crash. Deal with those cases by explicitly restoring the default signal handler. In another case, Chrome's test runner seems to have been arriving at the conclusion that it was to expect output from a child. Transitioning from exit() to _exit() fixes this problem, and it's not necessarily a bad idea to do this in post-fork() children without an execve() anyway. Bug: chromium:949098 Change-Id: I5a6af0c2a09cd8eac9998358f6d5ea665288236f Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1575670 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Use correct c++ standard library in Xcode project.John Z Wu2019-04-191-0/+2
| | | | | | | | This makes it build again for Xcode 10. Change-Id: Ia28b8c0b131ac2862a8c17e223d1d7b1f0f59134 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1574177 Reviewed-by: Mark Mentovai <mark@chromium.org>
* linux_core_dumper: add missing newline to Android test-disabled messageMark Mentovai2019-04-091-3/+3
| | | | | | | | | | | | | | The [ OK ] LinuxCoreDumperTest.VerifyExceptionDetails line does not appear at the beginning of a line, hiding it from Chromium’s test infrastructure. This causes the test to have an unknown result, which is treated as a failure. https://ci.chromium.org/p/chromium/builders/try/android-kitkat-arm-rel/233129 Bug: google-breakpad:791 Change-Id: I0eb646a219fa40347db884fd28ace647328c5e49 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1558893 Reviewed-by: Mike Frysinger <vapier@chromium.org>
* linux_core_dumper: partially disable test on AndroidMike Frysinger2019-04-071-0/+9
| | | | | | | | | | | | | | | | | | | | | Running this test on android-kitkat-arm-rel fails for some reason: [ RUN ] LinuxCoreDumperTest.VerifyExceptionDetails linux_core_dumper_unittest.cc:170: Failure Expected: (0U) != (dumper.crash_address()), actual: 0 vs 0 linux_core_dumper_unittest.cc:178: Failure Expected equality of these values: 2U Which is: 2 info.size() Which is: 0 [ FAILED ] LinuxCoreDumperTest.VerifyExceptionDetails (7 ms) Disable it for now on Android until someone can look into it. Bug: google-breakpad:791 Change-Id: I40a5e3dbeeb44e5eb0df187e61d55e07d8ad3613 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1546778 Reviewed-by: Mark Mentovai <mark@chromium.org>
* mac dump_syms: remove unused vars to fix -Werror build failuresMike Frysinger2019-04-051-1/+0
| | | | | | | Bug: chromium:940823, chromium:946404 Change-Id: Ib8af7f0845b0488f36cd1b91326aba11bf283b0a Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1546779 Reviewed-by: Mark Mentovai <mark@chromium.org>
* linux_core_dumper: add explicit casts for exception fieldsMike Frysinger2019-03-301-3/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | Some of the fields we save might have signed types depending on the system (e.g. `typedef int pid_t`). Depending on the toolchain, we can trip -Werror=narrowing failures like: src/client/linux/minidump_writer/linux_core_dumper.cc:248:66: error: narrowing conversion of ‘(__pid_t)info->siginfo_t::_sifields.siginfo_t::<anonymous union>::_kill.siginfo_t::<anonymous union>::<anonymous struct>::si_pid’ from ‘__pid_t {aka int}’ to ‘long unsigned int’ inside { } [-Werror=narrowing] set_crash_exception_info({info->si_pid, info->si_uid}); ^^^^^^ src/client/linux/minidump_writer/linux_core_dumper.cc:252:71: error: narrowing conversion of ‘(int)info->siginfo_t::_sifields.siginfo_t::<anonymous union>::_sigsys.siginfo_t::<anonymous union>::<anonymous struct>::_syscall’ from ‘int’ to ‘long unsigned int’ inside { } [-Werror=narrowing] set_crash_exception_info({info->si_syscall, info->si_arch}); ^^^^^^^^^^ Since the exception info fields are all uint64_t which should be large enough to handle all the fields in the siginfo_t structure, add casts for all the assignments to avoid these errors. We have implicit casts even without them, so we aren't changing behavior. Bug: google-breakpad:791 Bug: chromium:945653 Change-Id: Ib04e015998f08b857159ac13e9a065a66d228d49 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1544862 Reviewed-by: Mark Mentovai <mark@chromium.org>
* mac dump_syms: Support .dSYMs > 4GB (partially)Mark Mentovai2019-03-282-10/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Even 64-bit Mach-O (MH_MAGIC_64 = 0xfeedfacf) is not a fully 64-bit file format. File offsets in sections are stored in 32-bit fields, with Mach-O writers typically truncating offsets too large to fit to just their low 32 bits. When a section begins at a file offset >= 4GB, dump_syms would produce an error such as: Google Chrome Framework.dSYM/Contents/Resources/DWARF/Google Chrome Framework: the section '__apple_names' in segment '__DWARF' claims its contents lie outside the segment's contents As a workaround, this implements the strategy I first described in https://crbug.com/940823#c22. Segment file offsets are stored in 64-bit fields. Because segments contain sections and must load contiguously, it’s possible to infer a section’s actual offset by computing its load address relative to its containing segment’s load address, and treating this as an offset into the containing segment’s file offset. For safety, this is only done for 64-bit segments (LC_SEGMENT_64) where the 32-bit section offset stored in the Mach-O file is equal to the low (truncated) 32 bits of the section offset recomputed per the above strategy. Beware that this does not provide full “large file” support for 64-bit Mach-O files. There are other file offsets within Mach-O files aside from section file offsets that are stored in 32-bit fields even in the 64-bit format, including offsets to symbol table data (LC_SYMTAB and LC_DYSYMTAB). No attempt is made to recover correct file offsets for such data because, at present, such data is always stored by dsymutil near the beginning of .dSYM files, within the first 4GB. If it becomes necessary to address these other offsets, it should be possible to recover these offsets by reference to the __LINKEDIT segment that normally contains them, provided that __LINKEDIT doesn’t span more than 4GB, according to the strategy discussed at the bottom of https://crbug.com/940823#c22. Although this is sufficient to allow dump_syms to interpret Chromium .dSYM files that exceed 4GB, be warned that these Mach-O files are still technically malformed, and most other tools that consume Mach-O files will continue to have difficulties interpreting these large files. As further warning, note that should any individual DWARF section exceed 4GB, internal section offsets will be truncated irrecoverably, unless and until the toolchain implements support for DWARF64. https://bugs.llvm.org/show_bug.cgi?id=14969 With this change, dump_syms is able to correctly recover file offsets from and continue processing a .dSYM file with length 4530593528 (4321MB), whose largest section (__DWARF,__debug_info = .debug_info) has size 0x8d64c0b8 (2262MB), and which contains four sections (starting with __DWARF,__apple_names) beginning at file offsets >= 4GB. Bug: chromium:940823, chromium:946404 Change-Id: I23f5f3b07773fa2f010204d5bb53b6fb1d4926f7 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1541830 Reviewed-by: Robert Sesek <rsesek@chromium.org> Reviewed-by: Mike Frysinger <vapier@chromium.org>
* Fix dump_syms unit tests on Windows.Nelson Billing2019-03-186-317/+317
| | | | | | | | | | | | | | | - Baselines appeared to be stale. dump_syms now prints FUNC entries with the full function signature, whereas the baselines only contained the function name. The current state of the symbol file docs (https://chromium.googlesource.com/breakpad/breakpad/+/refs/heads/master/docs/symbol_files.md) seem to agree with the new FUNC entries rather than the old ones. Example of a name given in current docs: "nsQueryInterfaceWithError::operator()(nsID const&, void**) const". Change-Id: I9e01354cd82b7184b7cba31d132603e949a657ac Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1529133 Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
* linux_core_dumper: handle missing SIGSYS supportMike Frysinger2019-03-142-0/+8
| | | | | | | | | | | | If the kernel/C library headers are old, they might not have the fields needed for SIGSYS decoding. Add ifdef checks for that and skip the logic entirely. Easier than adding arch-specific siginfo structs to the codebase. Bug: google-breakpad:791 Change-Id: Ia473e3ffa61fce4c42cf4c1e73a9df044599bc5c Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1524447 Reviewed-by: Mark Mentovai <mark@chromium.org>
* linux_core_dumper: support setting exception_informationMike Frysinger2019-03-124-1/+76
| | | | | | | | | | | | | | Many signals in Linux support additional metadata on a per-signal basis. We can extract that from NT_SIGINFO and pass it through in the exception_information fields. The current core dumper logic doesn't set exception_information at all, so this is an improvement. Bug: google-breakpad:791 Change-Id: I38b78d6494e9bc682441750d98ac9be5b0656f5a Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1497662 Reviewed-by: Mark Mentovai <mark@chromium.org>
* linux_core_dumper: add a fallback definition for NT_SIGINFOMike Frysinger2019-03-072-0/+6
| | | | | | | | | | When building on an old system with outdated headers, this define might not be available. Add a fallback to our existing elf header. Bug: google-breakpad:790 Change-Id: I4dfe7a5cebd414cca3582a1a9cfc983503d5a779 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1507073 Reviewed-by: Mark Mentovai <mark@chromium.org>
* core2md: write error message with perrorMike Frysinger2019-03-041-1/+1
| | | | | | | | | | | | | | | | The current failure message omits the underlying errno. This can make diagnosing failures a bit difficult unless you run everything through strace. For example: $ core2md core /proc/self md $ core2md core /proc/self md Unable to generate minidump Now we get the errno details: Unable to generate minidump: File exists Change-Id: I67f30879868ce4a726d5d888ee8c0a4a316b5186 Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1497660 Reviewed-by: Ted Mielczarek <ted.mielczarek@gmail.com>
* linux_core_dumper: support NT_SIGINFO for reading crashing addressMike Frysinger2019-03-031-0/+23
| | | | | | | | | | | | | | | | | | | | | | | | | The current core dumper only parses NT_PRSTATUS notes. With signal details, this note only includes three fields: signo, code, and errno. We set exception_code to signo and exception_flag to code. The errno value isn't set by the kernel, so there's no need to save it. However, we never fill in exception_address which means all converted crashes look like they happen at address 0. This implies a NULL jump which is usually not the case, so it's just confusing. The prstatus structure doesn't offer anything directly that tracks this. Starting with linux-3.7, the kernel writes out the full siginfo structure in the NT_SIGINFO note. So lets support that to pull out si_addr which, for a bunch of common signals, is the value we want in exception_address. The size of the siginfo_t structure should be locked to 128 bytes at build time for all architectures, so this should hopefully be stable. Bug: google-breakpad:790 Change-Id: I458bad4787b1a8b73fad8fe068e9f23bec957599 Reviewed-on: https://chromium-review.googlesource.com/c/1497661 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Replace TYPED_TEST_CASE with TYPED_TEST_SUITE.Lei Zhang2019-02-283-3/+3
| | | | | | | | | | TYPED_TEST_CASE is deprecated in modern googletest. BUG=chromium:936654 Change-Id: I08004ffbb26089ebe17302934ed6d3268220d151 Reviewed-on: https://chromium-review.googlesource.com/c/1493423 Reviewed-by: Mark Mentovai <mark@chromium.org>
* breakpad: Remove semicolons, iOS edition.Nico Weber2019-02-252-2/+2
| | | | | | | Bug: chromium:926235 Change-Id: I237e7b7d89e5746beea80754675a232c881f25f6 Reviewed-on: https://chromium-review.googlesource.com/c/1487336 Reviewed-by: Mark Mentovai <mark@chromium.org>
* breakpad: Remove semicolons, mac edition.Nico Weber2019-02-226-8/+8
| | | | | | | Bug: chromium:926235 Change-Id: I473a7727c1831717b92a582c50d98256ea41d854 Reviewed-on: https://chromium-review.googlesource.com/c/1482716 Reviewed-by: Mark Mentovai <mark@chromium.org>
* breakpad: Remove semicolons.Nico Weber2019-02-212-2/+2
| | | | | | | Bug: chromium:926235 Change-Id: I7f0795ebd651303b6f7fb6981c2f639e17a536bb Reviewed-on: https://chromium-review.googlesource.com/c/1481232 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Delete deprecated SetFirstChanceExceptionHandler functionAndreas Haas2019-02-193-38/+0
| | | | | | | | | | | | | | | This CL removes the code I marked as deprecated in https://crrev.com/c/1411776. I could not delete the code in that CL before I removed all uses in Chrome in https://crrev.com/c/1411643. The tracking bug contains more information. R=mark@chromium.org Bug: chromium:921971 Change-Id: I77597826ef6e69a13ece529a5d24702bc72aa436 Reviewed-on: https://chromium-review.googlesource.com/c/1412353 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Always emit a 32-bit crash address for 32-bit architecturesGabriele Svelto2019-01-303-8/+56
| | | | | | | | | | | | | | Certain minidumps for 32-bit crashes have the upper 32-bit of the crash address (which is a 64-bit value) set to non-zero values. This caused a crash address with more than 32-bits to be printed out for minidumps of 32-bit architectures. This patch masks out those bits when reading the raw minidump data to ensure this doesn't happen anymore. Bug: google-breakpad:783 Change-Id: Ieef6dff759fd0ee2efc47c4c4a3cf863a48f0659 Reviewed-on: https://chromium-review.googlesource.com/c/1427819 Reviewed-by: Ted Mielczarek <ted.mielczarek@gmail.com>
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-10 07:12:30 +0000