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* Add support for parsing the DW_AT_ranges attributesGabriele Svelto2018-08-131-1/+40
| | | | | | | | | | | | | | | | This enables the DWARF reader to properly parse DW_AT_ranges attributes in compilation units and functions. Code covered by a function is now represented by a vector of ranges instead of a single contiguous range and DW_AT_ranges entries are used to populate it. All the code and tests that assumed functions to be contiguous entities has been updated to reflect the change. DW_AT_ranges attributes found in compilation units are parsed but no data is generated for them as it is not currently needed. BUG=754 Change-Id: I310391b525aaba0dd329f1e3187486f2e0c6d442 Reviewed-on: https://chromium-review.googlesource.com/1124721 Reviewed-by: Ted Mielczarek <ted.mielczarek@gmail.com>
* dump_symbols: Stop rejecting files with Android packed relocation sections.Peter Collingbourne2017-11-071-31/+0
| | | | | | | | | | | | The lld linker has native support for creating packed relocation sections, and as a result we can expect files with these sections to have symbols. Bug: chromium:742655 Change-Id: I48a50bff041146f51b3a8b730d7a778f832787f6 Reviewed-on: https://chromium-review.googlesource.com/754239 Reviewed-by: Mike Frysinger <vapier@chromium.org> Reviewed-by: Mark Mentovai <mark@chromium.org>
* Provide helper wrappers for basename(3) and dirname(3)Tobias Sargeant2017-10-181-11/+2
| | | | | | | | | | This hides the need to provide mutable C strings, and unifies existing basename calls and variations in a single location. Change-Id: Idfb449c47b1421f1a751efc3d7404f15f8b369ca Reviewed-on: https://chromium-review.googlesource.com/725731 Reviewed-by: Mark Mentovai <mark@chromium.org> Reviewed-by: Mike Frysinger <vapier@chromium.org>
* Rename src/common/memory.h to memory_allocator.h.Ted Mielczarek2017-10-173-3/+3
| | | | | | | | | | | | memory.h shadows a system header which normally isn't a problem because of the include paths in Breakpad, but the Firefox build system winds up with src/common in the include path so we've had a workaround for this for years. Renaming the file lets us get rid of that workaround and shouldn't hurt anything. Change-Id: I3b7c4239dc77f3b2b7cf2b572a0cad88cd7e8522 Reviewed-on: https://chromium-review.googlesource.com/723261 Reviewed-by: Mark Mentovai <mark@chromium.org>
* Teach the ELF parser to handle multiple PT_NOTE phdrs.Peter Collingbourne2017-05-264-38/+76
| | | | | | | | | | | | | | | It is legal for an ELF to contain multiple PT_NOTEs, and that is in fact what lld's output looks like. Testing: "make check" and breakpad_unittests when patched into chromium. Bug: chromium:716484 Change-Id: I01d3f8679961e2cb7e789d4007de8914c6af357d Reviewed-on: https://chromium-review.googlesource.com/513512 Reviewed-by: Primiano Tucci <primiano@chromium.org> Reviewed-by: Ted Mielczarek <ted@mielczarek.org> Reviewed-by: Mark Mentovai <mark@chromium.org>
* Simplify ELF parser code.Peter Collingbourne2017-05-253-35/+13
| | | | | | | | | | | | | The layout of Elf32_Nhdr and Elf64_Nhdr is the same, so remove templating and code that extracts the elfclass from the ELF file. Testing: "make check" and breakpad_unittests when patched into chromium. Bug: chromium:716484 Change-Id: I41442cfff48afc6ae1a5b604d22b67550a910376 Reviewed-on: https://chromium-review.googlesource.com/514450 Reviewed-by: Mike Frysinger <vapier@chromium.org>
* Wrap config.h include in HAVE_CONFIG_H.John Budorick2017-05-241-1/+4
| | | | | | | | Bug: breakpad:730 Change-Id: I5a24b96258e1114378061512239d3e18f3f753f0 Reviewed-on: https://chromium-review.googlesource.com/514283 Reviewed-by: Mark Mentovai <mark@chromium.org> Reviewed-by: Mike Frysinger <vapier@chromium.org>
* Only use O_CLOEXEC on platforms that support itLars Volker2017-05-101-0/+1
| | | | | | | | | | | | | | Change a9fca58 made use of the O_CLOEXEC flag, which is not supported on older Linux kernels. This change makes the use contingent on kernel support. Testing: I manually compiled breakpad on CentOS 5.8 running kernel 2.6.18-308.8.2.el5.centos.plusxen. Bug: 730 Change-Id: I21dff928cfba3c156a56708913f65a0c7b5396a6 Reviewed-on: https://chromium-review.googlesource.com/498528 Reviewed-by: Mike Frysinger <vapier@chromium.org>
* Make minidump name generation on Linux as random as possibleGabriele Svelto2017-04-121-7/+87
| | | | | | | | | | | | | | | This patch ensures that two crashes taken within the same second have different minidump names. The random characters used in the minidump filename are now read from /dev/urandom where possible or generated via arc4random(). If neither is available we fall back to regular rand() but mixing the address of an object to the current time when generating the random seed to make it slightly less predictable. BUG=681 Change-Id: I2e97454859ed386e199b2628d6b7e87e16481b75 Reviewed-on: https://chromium-review.googlesource.com/445784 Reviewed-by: Mike Frysinger <vapier@chromium.org>
* Remove unused typedefGordana Cmiljanovic2017-03-241-1/+0
| | | | | | | | | | | This removes unused typedef left in change: https://chromium-review.googlesource.com/c/447697/ and fixes error: dump_symbols.cc:613:35: error: unused typedef 'Word' [-Werror,-Wunused-local-typedef] Change-Id: Ib5a82cd8af9a58ebf173b0f338fa9ad341819ef3 Reviewed-on: https://chromium-review.googlesource.com/459518 Reviewed-by: Mark Mentovai <mark@chromium.org>
* [MIPS]: Relax dwarf section loading to accept both PROGBITS and MIPS_DWARF ↵Dragan Mladjenovic2017-03-071-4/+22
| | | | | | | | section types Change-Id: I0862d930d92687dee47daa8d4dc3a21524c1c893 Reviewed-on: https://chromium-review.googlesource.com/447697 Reviewed-by: Joshua Peraza <jperaza@chromium.org>
* Update linksOrgad Shaneh2016-11-181-1/+1
| | | | | | | | | | code.google.com is obsolete. Fix all broken markdown links while at it. Change-Id: I6a337bf4b84eacd5f5c749a4ee61331553279009 Reviewed-on: https://chromium-review.googlesource.com/411800 Reviewed-by: Mike Frysinger <vapier@chromium.org>
* Allow compiling the google-breakpad code using a global ::string class ↵Ivan Penkov2016-11-081-3/+4
| | | | | | | | | | | | instead of std::string. For more details take a look at common/using_std_string.h BUG= Change-Id: Ifebfc57f691ef3a3bef8cfed7106c567985edffc Reviewed-on: https://chromium-review.googlesource.com/399738 Reviewed-by: Mark Mentovai <mark@chromium.org>
* This change allows compiling the google-breakpad code using a global ↵Ivan Penkov2016-08-301-2/+1
| | | | | | | | | | | | ::string class instead of std::string. For more details take a look at common/using_std_string.h BUG= Change-Id: I11f1ce697be23e13f12ea8f0468bbe02fa63c967 Reviewed-on: https://chromium-review.googlesource.com/378159 Reviewed-by: Mark Mentovai <mark@chromium.org>
* linux-syscall-support: pull in latest versionMike Frysinger2016-06-141-11/+0
| | | | | | | | | The sys_mmap/sys_mmap2 weirdness has been cleaned up in lss now and there is only one API now for everyone -- sys_mmap. R=mseaborn@chromium.org Review URL: https://codereview.chromium.org/2065493006 .
* Dump INFO CODE_ID containing Build ID in Linux dump_symsTed Mielczarek2016-06-106-31/+104
| | | | | | | | | | | | | I'd like to have the Build ID available for our symbol server uploading, and this will make it easy. Most of this change is me rewriting dump_symbols_unittest to be typed tests so I could add a new test there. R=mark@chromium.org BUG= Review URL: https://codereview.chromium.org/2052263002 .
* Add debug fission support.Yunlian Jiang2016-05-041-1/+2
| | | | | | | | | | | | | | | | | | | | | This added debug fission support. It tries to find the dwp file from the debug dir /usr/lib/debug/*/debug and read symbols from them. Most of this patch comes from https://critique.corp.google.com/#review/52048295 and some fixes after that. The elf_reader.cc comes from TOT google code. I just removed some google dependency. Current problems from this patch 1: Some type mismatch: from uint8_t * to char *. 2: Some hack to find the .dwp file. (replace .debug with .dwp) BUG=chromium:604440 R=dehao@google.com, ivanpe@chromium.org Review URL: https://codereview.chromium.org/1884283002 .
* tweak IGNORE_RET behavior a bitMike Frysinger2016-04-111-1/+1
| | | | | | | | | | GCC will still warn about unused return value with the form: if (write(...)); Instead, change the semi-colon to an empty set of braces. BUG=chromium:428478 TEST=build+test still works
* Added an option (-i) to have dump_syms output header information only.David Yen2016-04-082-18/+77
| | | | | | | | | | | | | | | | | It is often helpful to check if a particular symbol file dumped by dump_syms actually matches a version of a binary file we have. The symbol output contains an ID which can be used to see if it matches the binary file. Unfortunately, this ID is internally calculated and not a standard hash of the binary file. Being able to output the header information only will allow users to determine whether their symbol file is up to date or not. R=jochen@chromium.org BUG=561447 Review URL: https://codereview.chromium.org/1864823002 . Patch from David Yen <dyen@chromium.org>.
* Switch the Linux minidump writer to use MDCVInfoELF for CV data.Ted Mielczarek2016-04-054-129/+184
| | | | | | | | | | | | | | | | | | | | | | | | | | This preserves full build ids in minidumps, which are useful for tracking down the right version of system libraries from Linux distributions. The default build id produced by GNU binutils' ld is a 160-bit SHA-1 hash of some parts of the binary, which is exactly 20 bytes: https://sourceware.org/binutils/docs-2.26/ld/Options.html#index-g_t_002d_002dbuild_002did-292 The bulk of the changes here are to change the signatures of the FileID methods to use a wasteful_vector instead of raw pointers, since build ids can be of arbitrary length. The previous change that added support for this in the processor code preserved the return value of `Minidump::debug_identifier()` as the current `GUID+age` treatment for backwards-compatibility, and exposed the full build id from `Minidump::code_identifier()`, which was previously stubbed out for Linux dumps. This change keeps the debug ID in the `dump_syms` output the same to match. R=mark@chromium.org, thestig@chromium.org BUG= Review URL: https://codereview.chromium.org/1688743002 .
* Refactor sym_upload in tools to extract code into common/linux, and minor fixesLi Yan2016-03-304-1/+231
| | | | | | | | | | | | to code calling libcurl. This change may be used to build a tool to dump and upload symbols with multi-thread. BUG= R=mmandlis@chromium.org CC=google-breakpad-dev@googlegroups.com Review URL: https://codereview.chromium.org/1842113002 .
* Have dump_syms output the full symbol table.David Yen2016-03-231-18/+47
| | | | | | | | | | | | | | | | | | Some of the symbols in the stack trace are not found in the .dynsym section but were located in the full symbol table .symtab section instead. This was causing some of our stack traces to be incomplete or point to incorrect function names. Since we only output function names, there are actually not that many more symbols located in .symtab that aren't in .dynsym. It is better to simply output all symbols found so our stack traces are complete. R=mark@chromium.org, thestig@chromium.org BUG=561447 Review URL: https://codereview.chromium.org/1824063002 . Patch from David Yen <dyen@chromium.org>.
* convert to uint8_t* for binary data to fix -Wnarrowing build errorsMike Frysinger2016-01-261-12/+15
| | | | | | | | | | | | | | | Newer gcc versions default to -Werror=narrowing when using newer C++ standards (which we do). This causes issues when we try to stuff a value like 0xea into a char -- the value is out of range for signed char bytes. That's when gcc throws an error: .../bytereader_unittest.cc: In member function 'virtual void Reader_DW_EH_PE_absptr4_Test::TestBody()': .../bytereader_unittest.cc:400:55: error: narrowing conversion of '234' from 'int' to 'char' inside { } [-Wnarrowing] BUG=chromium:579384 TEST=`make check` passes R=mark@chromium.org Review URL: https://codereview.chromium.org/1605153004 .
* Let breakpad build with -Wall on OS X and Linux.Lei Zhang2015-12-294-3/+6
| | | | | | | | | A=thakis@chromium.org Original Review: https://codereview.chromium.org/1550933002/ R=thakis@chromium.org Review URL: https://codereview.chromium.org/1554613002 .
* Support for multiple upload files in CrashReportSender/HTTPUploadDavid Major2015-10-062-12/+12
| | | | | | | | A=David Major <dmajor@mozilla.com> BUG=https://bugzilla.mozilla.org/show_bug.cgi?id=1048091 R=ted@mielczarek.org Review URL: https://bugzilla.mozilla.org/show_bug.cgi?id=1048091 .
* Update breakpad for Android packed relocations.rmcilroy@chromium.org2015-06-191-0/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | Shared libraries containing Android packed relocations have a load bias that differs from the start address in /proc/$$/maps. Current breakpad assumes that the load bias and mapping start address are the same. Fixed by changing the client to detect the presence of Android packed relocations in the address space of a loaded library, and adjusting the stored mapping start address of any that are packed so that it contains the linker's load bias. For this to work properly, it is important that the non-packed library is symbolized for breakpad. Either packed or non-packed libraries may be run on the device; the client detects which has been loaded by the linker. BUG=499747 R=primiano@chromium.org, rmcilroy@chromium.org Review URL: https://codereview.chromium.org/1189823002. Patch from Simon Baldwin <simonb@chromium.org>. git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1459 4c0a9323-5329-0410-9bdc-e9ce6186880e
* MIPS64: Initial MIPS64 related change.mark@chromium.org2015-04-151-2/+7
| | | | | | | | | | | With this change Breakpad can be compiled for MIPS64, but it is not yet functional. Patch by Gordana Cmiljanovic <Gordana.Cmiljanovic@imgtec.com> Review URL: https://breakpad.appspot.com/6824002/ git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1446 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Fix compilation with gcc --std=c++11ted.mielczarek@gmail.com2015-03-241-2/+2
| | | | | | | | | Patch by Jon Turney <jon.turney.1111@gmail.com> R=ted at https://breakpad.appspot.com/7824002/ git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1435 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Cleanup Linux debug link file handling code.thestig@chromium.org2015-02-101-44/+74
| | | | | | | | | | | - Handle the case when the debug link points back to the object file. - Move some checks into a separate SanitizeDebugFile() function. BUG=636 Review URL: https://breakpad.appspot.com/3784002/ git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1426 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Follow debug link correctlyhashimoto@chromium.org2015-02-031-37/+37
| | | | | | | | | | | | As thestig@chromium.org pointed out in https://breakpad.appspot.com/9684002, LoadSymbols() should return false if |read_gnu_debug_link| is false. BUG=chromium:453498 R=thestig@chromium.org Review URL: https://breakpad.appspot.com/2844002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1422 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Demangle symbol namehashimoto@chromium.org2015-02-031-0/+11
| | | | | | | | | | | | The spec says it should be demangled. https://code.google.com/p/google-breakpad/wiki/SymbolFiles BUG=chromium:453498 R=mark@chromium.org Review URL: https://breakpad.appspot.com/2854002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1421 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Fix some fragile code that is likely to cause future memory corruptionerikchen@chromium.org2015-01-271-2/+1
| | | | | | | | | | | | | | | | | | problems. - The ordering of keys in stl containers cannot change. Make the relevant members const to guarantee this assumption. - Add handling and logging for demangle errors. - Fix a potential double-delete bug if a function passed to AddFunction() is already present. BUG=chromium:449214 R=mark@chromium.org Review URL: https://breakpad.appspot.com/10704002/ git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1415 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Read dynamic symbols table even if binary contains debug infoted.mielczarek@gmail.com2014-11-031-39/+36
| | | | | | A=Wander Lairson Costa <wcosta@mozilla.com>. R=ted at https://breakpad.appspot.com/9684002/ git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1400 4c0a9323-5329-0410-9bdc-e9ce6186880e
* GoogleCrashdumpUploader: adds Upload(string*) API to get the HTTP response.gunsch@chromium.org2014-09-185-18/+45
| | | | git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1379 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Fixes common_unittests build.thestig@chromium.org2014-09-172-0/+10
| | | | | | | | | | Original CL: https://breakpad.appspot.com/5704002/ A=gunsch@chromium.org R=gunsch@chromium.org Review URL: https://breakpad.appspot.com/8674002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1378 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Back out trunk r1367.mark@chromium.org2014-09-032-12/+12
| | | | | | | | Compile error: https://bugzilla.mozilla.org/show_bug.cgi?id=1048091#c15 Review URL: https://breakpad.appspot.com/9694002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1369 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Support for multiple upload files in CrashReportSender/HTTPUploadted.mielczarek@gmail.com2014-08-282-12/+12
| | | | | | A=David Major <dmajor@mozilla.com> R=ted at https://bugzilla.mozilla.org/show_bug.cgi?id=1048091 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1367 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Chrome on Android now supports loading the shared library directly from the ↵rmcilroy@chromium.org2014-07-225-33/+77
| | | | | | | | | | | | | | | | | | | | | | APK file. This patch makes two changes to breakpad to enable crash reporting to work correctly when the library is inside another file (an archive): - Do not filter mappings which map an executable at a non-zero offset. - If such an executable is mapped look in the ELF information for the shared object name and use that name in the minidump. Note this change doesn't care about the archive format and isn't Android specific (though loading the shared library this way is currently only done on Android). BUG=390618 R=thestig@chromium.org Review URL: https://breakpad.appspot.com/7684002 Patch from Anton Carver <anton@chromium.org>. git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1355 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Change some ELF utils to return the length as a size_t.thestig@chromium.org2014-07-173-16/+17
| | | | | | | | R=mark@chromium.org Review URL: https://breakpad.appspot.com/7694002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1349 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Add virtual dtor to LibcurlWrapper.pbos@chromium.org2014-06-042-0/+3
| | | | | | | | | | | LibcurlWrapper is deleted but contains no virtual destructor, triggering warnings with -Wdelete-non-virtual-dtor in clang++. R=ivanpe@chromium.org Review URL: https://breakpad.appspot.com/7664002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1337 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Fixing a build break on Linux.mmandlis@chromium.org2014-05-012-3/+1
| | | | | | | | R=ivanpe@chromium.org Review URL: https://breakpad.appspot.com/4654002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1323 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Add Arm64 support to dumpsyms.rmcilroy@chromium.org2014-04-291-0/+9
| | | | | | | | | | | | Adds Arm64 support to dumpsyms, enabling support for EM_AARCH64 elf type and arm64 registers in DwarfCFIToModule. BUG=367367,335641,354405 R=mark@chromium.org Review URL: https://breakpad.appspot.com/1654002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1322 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Linux: Check the CRC32 of the debug link file in the symbol dumper.thestig@chromium.org2014-04-233-23/+175
| | | | | | | | R=mark@chromium.org Review URL: https://breakpad.appspot.com/1644002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1320 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Skip ElfCoreDumpTest and LinuxCoreDumperTest on Android if no core file is ↵rmcilroy@chromium.org2014-04-231-0/+9
| | | | | | | | | | | | | | | dumped. On certain versions of Android (specifically JellyBean MR2 on Nexus 7, possibly others too) no ELF core dump is created for crashing processes. Check for this and skip the test if so. BUG=364943 R=thestig@chromium.org Review URL: https://breakpad.appspot.com/1624003 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1318 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Limit the workaround in r1313 to Android only.thestig@chromium.org2014-04-151-2/+9
| | | | | | | | | BUG=579 R=rmcilroy@chromium.org, vapier@chromium.org Review URL: https://breakpad.appspot.com/1564002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1314 4c0a9323-5329-0410-9bdc-e9ce6186880e
* [Android]: Fix hang in CreateChildCrash() on Android.rmcilroy@chromium.org2014-04-151-13/+19
| | | | | | | | | | | | | | After r1299, the LinuxCoreDumperTest::VerifyDumpWithMultipleThreads and ElfCoreDumpTest::ValidCoreFile would both hang on Android. This appears to be due to the tkill signal not being recieved by the thread which is meant to crash, even though tkill returns 0. This CL retries sending the tkill signal multiple times, which prevents the Hang. BUG=579 R=thestig@chromium.org Review URL: https://breakpad.appspot.com/1524002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1313 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Fix ElfCoreDumpTest.ValidCoreFile unit test.benchan@chromium.org2014-04-031-2/+5
| | | | | | | | | | | | | | | | | | | The ElfCoreDumpTest.ValidCoreFile unit test assumed that the number of NT_FPREGSET / NT_PRXFPREG notes in the core dump file equals to the number of threads of the crashed process. This assumption isn't always true as the kernel skips filling the NT_FPREGSET / NT_PRXFPREG note of a thread if the FPU state isn't available. The kernel indicates the availability of NT_FPREGSET / NT_PRXFPREG via the pr_fpvalid field of the NT_PRSTATUS note. This CL modifies the ElfCoreDumpTest.ValidCoreFile unit test to verify the number of NT_FPREGSET and NT_PRXFPREG notes based on the pr_fpvalid field of the NT_PRSTATUS notes. BUG=577 TEST=Run unit tests on x86 and x86_64 Linux platform. R=vapier@chromium.org Review URL: https://breakpad.appspot.com/1404002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1303 4c0a9323-5329-0410-9bdc-e9ce6186880e
* First cut at adding arm64 Linux / Android support to Breakpad.rmcilroy@chromium.org2014-04-021-2/+2
| | | | | | | | | | | | | | This is an initial attempt to add Arm64 (aarch64) support to Breakpad for Linux / Android platforms. This CL adds the Arm64 data structures, but does not yet implement the Android getcontext support or CPUFillFromThreadInfo / CPUFillFromUContext. BUG=354405,335641 R=mark@chromium.org Review URL: https://breakpad.appspot.com/1354002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1301 4c0a9323-5329-0410-9bdc-e9ce6186880e
* fix races in CrashGenerator::CreateChildCrashvapier@chromium.org2014-04-022-14/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current CreateChildCrash logic is racy when it comes to creating a crash dump for two reasons: The main thread that calls kill() on a different thread is guaranteed the signal will be *queued* when it returns, but not *delivered*. If the kernel doesn't automatically schedule the receiving thread, but instead lets the main thread run to the exit() call, then the signal never triggers a coredump and the whole process simply exits. The main thread is using kill() to try to deliver a signal to a specific thread, but that function is for sending signals to a process. That means the kernel is free to deliver the signal to any thread in the process and not just the one requested. This manifests itself as the pr_pid in the coredump not being the one expected. Instead, we must use tkill() with the tid (which we already took care of gathering) to deliver to a specific thread. These are a lot easier to see on a UMP system as contention is heavier. BUG=chromium:207918 TEST=`dumper_unittest` still passes, and doesn't flake out in a UMP system TEST=`linux_client_unittest` still passes R=benchan@chromium.org Review URL: https://breakpad.appspot.com/1304005 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1299 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Terminating FileID path when at maximum length. (Coverity)thestig@chromium.org2014-04-012-5/+4
| | | | | | | | | | | | | | If FileID was constructed with a path that was >= PATH_MAX then path_ was not terminated resulting in a possible buffer overrun when reading. BUG=573 A=cmumford@chromium.org Original code review: https://breakpad.appspot.com/1324002/ R=cmumford@chromium.org Review URL: https://breakpad.appspot.com/1334002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1295 4c0a9323-5329-0410-9bdc-e9ce6186880e
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-09 08:08:00 +0000