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* Handle multiple microdumps in system log.Maria Mandlis2016-02-263-4/+211
| | | | | | | | Properly handle microdump processing, when the system_log file contains an incomplete microdump section at the top. The processor will process the first complete microdump section. R=primiano@chromium.org Review URL: https://codereview.chromium.org/1742843002 .
* Support processing microdumps for x86 architecture.Maria Mandlis2016-02-184-6/+216
| | | | | | | BUG=587536 R=primiano@chromium.org Review URL: https://codereview.chromium.org/1704243002 .
* Try loading msdiaNNN.dll if CoCreateInstance(CLSID_DiaSource) failsBirunthan Mohanathas2016-02-171-4/+36
| | | | | | | | | | Because tools/windows/symupload/symupload.cc uses `nullptr` (which requires VS2010), the CLSID comparison is only performed for msdia100.dll and later. When compiling with an older (or future) CLSID_DiaSource, we retain the existing behaviour (i.e. fail if CoCreateInstance fails). R=ivanpe@chromium.org BUG=https://bugzilla.mozilla.org/show_bug.cgi?id=1236343
* Fix buffer overrun in MinidumpModule::debug_identifier with MDCVInfoELFTed Mielczarek2016-02-171-1/+3
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* Fixing a flaky Linux exploitability unittest.Ivan Penkov2016-02-163-15/+81
| | | | | | | BUG=https://code.google.com/p/chromium/issues/detail?id=584174 R=mmandlis@chromium.org Review URL: https://codereview.chromium.org/1697963002 .
* Ensure Linux minidump writer flushes minidump header early.Ted Mielczarek2016-02-121-11/+18
| | | | | | | | | | | | | | | | If the Linux minidump writer crashes while writing a dump, the dump might contain some useful information, but the header will be empty because TypedMDRVA's destructor flushes the data, and the header var doesn't go out of scope until the end of the `Dump` method. This fixes that problem by putting the header in a shorter block scope. We've seen this problem in some Android dumps in the wild, like: https://crash-stats.mozilla.com/report/index/cef5b777-02d1-43c2-bf40-133ab2160209 R=thestig@chromium.org BUG=https://bugzilla.mozilla.org/show_bug.cgi?id=1247978 Review URL: https://codereview.chromium.org/1696573003 .
* Parse additional line introduced in the microdump format and containing the ↵Maria Mandlis2016-02-1111-1/+56
| | | | | | | | | | | | | | | GPU infromation in the following format: G GL_VERSION|GL_VENDOR|GL_RENDERER. The GPU version, vendor and renderer are extracted during microdump parsing and populated in the appropriate fields in the SystemInfo struct. This is to match the changes introduced in crrev.com/1343713002 and crrev.com/1334473003 BUG=chromium:536769 R=primiano@chromium.org Review URL: https://codereview.chromium.org/1678463002 .
* Revert "Added a switch to dump minidump modules in minidump_stackwalk."Lei Zhang2016-02-103-30/+5
| | | | | | | | | | | This reverts commit cb936a0243c97ae9cd2d4bb19d95dde0421fed6d. A=dyen@chromium.org Original Review: https://codereview.chromium.org/1672773002/ R=dyen@chromium.org Review URL: https://codereview.chromium.org/1688493003 .
* Change MDCVInfoELF into something usable.Ted Mielczarek2016-02-104-45/+313
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes MDCVInfoELF (which is currently unused, apparently a vestigal bit of code landed as part of Solaris support) into a supported CodeView format that simply contains a build id as raw bytes. Modern ELF toolchains support build ids nicely: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Developer_Guide/compiling-build-id.html It would be useful to have the original build ids of loaded modules in Linux minidumps, since tools like Fedora's darkserver allow querying by build id and the current Breakpad code truncates the build id to the size of a GUID, which loses information: https://darkserver.fedoraproject.org/ A follow-up patch will change the Linux minidump generation code to produce MDCVInfoELF in minidumps instead of MDCVInfoPDB70. This patch should be landed first to ensure that crash processors are able to handle this format before dumps are generated containing it. The full build id is exposed as the return value of Minidump::code_identifier(), which currently just returns "id" for modules in Linux dumps. For backwards-compatibility, Minidump::debug_identifier() continues to treat the build id as a GUID, so debug identifiers for existing modules will not change. BUG= R=mark@chromium.org Review URL: https://codereview.chromium.org/1675413002 .
* Fix usage of deprecated method sendSynchronousRequest:returningResponse:error:.Sylvain Defresne2016-02-081-3/+43
| | | | | | | | | | | | | The method -[NSURLConnection sendSynchronousRequest:returningResponse:error:] has been deprecated in 10.11 OS X SDK and 9.0 iOS SDK without replacement. So emulate a synchronous request by using an asynchronous request and waiting on a semaphore for the request completion. BUG=https://bugs.chromium.org/p/google-breakpad/issues/detail?id=675 BUG=569158 R=mark@chromium.org Review URL: https://codereview.chromium.org/1675243002 .
* Fix usage of deprecated method stringByAddingPercentEscapesUsingEncoding:.Sylvain Defresne2016-02-081-4/+19
| | | | | | | | | | | | | | | | The method -[NSString stringByAddingPercentEscapesUsingEncoding:] has been deprecated with 10.11 OS X SDK and 9.0 iOS SDK. The recommended method is -[NSString stringByAddingPercentEncodingWithAllowedCharacters:] available since 10.9 OS X SDK and 7.0 iOS SDK. Use the new method when available using URLQueryAllowedCharacterSet to get the same encoded string. BUG=https://bugs.chromium.org/p/google-breakpad/issues/detail?id=675 BUG=569158 R=mark@chromium.org Review URL: https://codereview.chromium.org/1680663002 .
* Fix usage of deprecated function CFPropertyListCreateFromXMLData.Sylvain Defresne2016-02-081-3/+3
| | | | | | | | | | | | The function CFPropertyListCreateFromXMLData is deprecated in favor of the function CFPropertyListCreateWithData that is available since the 10.6 OS X SDK and 4.0 iOS SDK. BUG=https://bugs.chromium.org/p/google-breakpad/issues/detail?id=675 BUG=569158 R=mark@chromium.org Review URL: https://codereview.chromium.org/1678063002 .
* [mips64] Support for mips n64Mike Frysinger2016-02-0617-133/+1083
| | | | | | | | | | Adding remaining mips n64 support including stackwalker. BUG=None TEST=manually tested on Linux/Android R=vapier@chromium.org Review URL: https://codereview.chromium.org/1418453011 .
* Remove use of deprecated CFURLCreateDataAndPropertiesFromResource function.Ivan Penkov2016-01-311-6/+19
| | | | | | | | | | | | | Original change (https://codereview.chromium.org/1527363003/) was failing in CFReadStreamGetBuffer() call, so changed to CFReadStreamRead() to be more conservative. Patch provided by Scott Hancher. BUG= R=mark@chromium.org Review URL: https://codereview.chromium.org/1637433003 .
* Added a switch to dump minidump modules in minidump_stackwalk.Lei Zhang2016-01-293-5/+30
| | | | | | | | | | | | In order to figure out what symbols we need associated to a minidump, it is useful to be able to dump all the modules the minidump contains. A=dyen@chromium.org Original Review: https://codereview.chromium.org/1651593002/ BUG=563716 R=dyen@chromium.org Review URL: https://codereview.chromium.org/1650713002 .
* Improvements to GYP buildPavel Labath2016-01-293-3/+10
| | | | | | | | | | | | | | | | | | | | | | This updates the GYP build for the processor component (on windows). - adds/removes references to files which were added or removed from the repository - includes build/common.gypi in the gyp files: needed to correctly detect the OS (I think, the generated MSVC solutions were broken without it) - conditionally compiles code platform-specific code for the given platform After this minidump processor nearly compiles with VS2013: the generated project is correct, but some files still have compilation errors. Disclaimer: I have not tested the GYP changes on non-windows platform, as there does not seem to be anyone using it there. BUG= R=mark@chromium.org Review URL: https://codereview.chromium.org/1643633004 .
* convert to uint8_t* for binary data to fix -Wnarrowing build errorsMike Frysinger2016-01-2616-173/+219
| | | | | | | | | | | | | | | 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 .
* test: allow use of system gmock/gtest libsMike Frysinger2016-01-251-2/+2
| | | | | | | | | | | | | | Some systems provide prebuilt copies of gmock/gtest (such as Chromium OS). Add a configure flag so they can take advantage of that. This allows for a smaller checkout as they don't need to include the full testing/ tree. BUG=chromium:579384 TEST=`make check` passes w/--enable-system-test-libs TEST=`make check` passes w/--disable-system-test-libs R=thestig@chromium.org Review URL: https://codereview.chromium.org/1638653002 .
* Revert "Fix deprecatation warning when building for recent SDKs on iOS/OS X."Olivier Robin2016-01-212-62/+10
| | | | | | | | | | | | | | | | | | | | This reverts CL https://codereview.chromium.org/1563223004/ This reverts commit 7cc0d8562bf8b20b88cc941ba72593cb7230ecf6. CL 1563223004 introduces two bugs on iOS. - Encoding the minidump name with extra percent causing crash server to fail processing the file. - Using a released pointer causing random crashes on upload. The data, resp, err pointers returned in the NSURLSession completion handler is released at the end of the block. When used later (to get the crash ID), it causes a crash. BUG=569158 R=blundell@chromium.org, mark@chromium.org Review URL: https://codereview.chromium.org/1619603002 . Patch from Olivier Robin <olivierrobin@chromium.org>.
* exploitability_unittest: fix warningsMike Frysinger2016-01-211-7/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The std::getline function always returns its first arg (which is an iostream object) and cannot return anything else. Thus, testing its value is pointless, and even leads to build errors w/at least gcc-5 due to gtest ASSERT_TRUE funcs only taking bool types: .../exploitability_unittest.cc: In member function 'virtual void {anonymous}::ExploitabilityLinuxUtilsTest_DisassembleBytesTest_Test::TestBody()': .../exploitability_unittest.cc:200:136: error: no matching function for call to 'testing::AssertionResult::AssertionResult(std::basic_istream<char>&)' In file included from .../breakpad_googletest_includes.h:33:0, from .../exploitability_unittest.cc:35: .../gtest.h:262:12: note: candidate: testing::AssertionResult::AssertionResult(bool) Since we know this never fails, simply drop the ASSERT_TRUE usage. The next line already checks the content of the buffer we read. Further on in the file, we hit some signed warnings: In file included from .../breakpad_googletest_includes.h:33:0, from .../exploitability_unittest.cc:35: .../gtest.h: In instantiation of 'testing::AssertionResult testing::internal::CmpHelperEQ(const char*, const char*, const T1&, const T2&) [with T1 = long unsigned int; T2 = int]': .../gtest.h:1484:23: required from 'static testing::AssertionResult testing::internal::EqHelper<lhs_is_null_literal>::Compare(const char*, const char*, const T1&, const T2&) [with T1 = long unsigned int; T2 = int; bool lhs_is_null_literal = false]' .../exploitability_unittest.cc:241:289: required from here .../gtest.h:1448:16: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare] if (expected == actual) { This is because we compare the register value (a uint64_t) directly to an integer constant, and those are signed by default. Stick a U suffix on them to fix things up. BUG=chromium:579384 TEST=`make check` passes R=ivanpe@chromium.org Review URL: https://codereview.chromium.org/1611763002 .
* Fix usage of snprintf for MSVCPavel Labath2016-01-197-17/+50
| | | | | | | | | | | | | | Older versions of MSVC don't have a snprintf functions. Some files were already working around that, but not all of them. Instead of copying the logic into every file, I centralize it into a new stdio.h wrapper file and make other files include that. BUG= R=mark@chromium.org Review URL: https://codereview.chromium.org/1602563003 . Patch from Pavel Labath <labath@google.com>.
* breakpad: fix unittest failure when building with clang.Mike Frysinger2016-01-151-1/+1
| | | | | | | | | | | | | | | In C/C++, the result of signed integer overflow is undefined. The expression "base + size - 1" is parsed as "(base + size) - 1", and "base + size" can overflow even if "base + (size - 1)" <= INT_MAX. See http://g/c-compiler-chrome/461JohPKakE/JI3rEBg6FwAJ for more. BUG=None TEST='CC=clang CXX=clang++ ./configure && make check' R=vapier@chromium.org Review URL: https://codereview.chromium.org/1591793002 .
* libdisasm: Remove inclusion of windows.hPavel Labath2016-01-121-4/+0
| | | | | | | | | | | | | | windows.h defines exception_code as a macro, which conflicts with our use of the identifier in exception records. It appears that this particular include of windows.h is not needed, so instead of undefining the macro, I simply delete the include. Build tested with MSVC 2013. BUG= R=mark@chromium.org Review URL: https://codereview.chromium.org/1579623004 . Patch from Pavel Labath <labath@google.com>.
* Define intptr and uintptr in a more generic wayPavel Labath2016-01-111-6/+2
| | | | | | | | | | | | | MSVC does not have the __PTRDIFF_TYPE__ macro defined, so I use the standard [u]intptr_t types instead. Compilation tested on windows, linux and mac. BUG= R=mark@chromium.org Review URL: https://codereview.chromium.org/1571293003 . Patch from Pavel Labath <labath@google.com>.
* libdisasm: Don't depend on sizeof(void)Pavel Labath2016-01-081-3/+3
| | | | | | | | | | | | | Due to operator precedence, the address was first cast to void* and then incremented, which resulted in an error on windows, as sizeof(void) is undefined and MSVC takes this seriously. Changing the precedence to perform the addition first. R=mark@chromium.org Review URL: https://codereview.chromium.org/1570843002 . Patch from Pavel Labath <labath@google.com>.
* disassembler_x86: Remove unused includePavel Labath2016-01-081-1/+0
| | | | | | | | | | | | | This file is not present on windows, and it's causing build errors there. As far as I can tell, nothing in this file actually uses that include, so I just remove it. BUG= R=mark@chromium.org Review URL: https://codereview.chromium.org/1475353002 . Patch from Pavel Labath <labath@google.com>.
* Fix compilation of breakpad on Linux.Sylvain Defresne2016-01-081-2/+2
| | | | | | | | | Fix some copy/paste errors from commit 41440eaa. BUG=None R=thestig@chromium.org Review URL: https://codereview.chromium.org/1564293002 .
* Fix deprecatation warning when building for recent SDKs on iOS/OS X.Sylvain Defresne2016-01-072-10/+62
| | | | | | | | | | | | | | | | | | | | | | | | Fixes the following compilation warning when using recent version of the iOS or OS X SDK by using the recommended new API: ../../breakpad/src/common/mac/HTTPMultipartUpload.m:56:10: error: 'stringByAddingPercentEscapesUsingEncoding:' is deprecated: first deprecated in iOS 9.0 - Use -stringByAddingPercentEncodingWithAllowedCharacters: instead, which always uses the recommended UTF-8 encoding, and which encodes for a specific URL component or subcomponent since each URL component or subcomponent has different rules for what characters are valid. [-Werror,-Wdeprecated-declarations] [key stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; ^ CFURLCreateStringByAddingPercentEscapes ../../breakpad/src/common/mac/HTTPMultipartUpload.m:207:29: error: 'sendSynchronousRequest:returningResponse:error:' is deprecated: first deprecated in iOS 9.0 - Use [NSURLSession dataTaskWithRequest:completionHandler:] (see NSURLSession.h [-Werror,-Wdeprecated-declarations] data = [NSURLConnection sendSynchronousRequest:req ^ ../../breakpad/src/client/mac/handler/minidump_generator.cc:158:6: error: 'CFPropertyListCreateFromXMLData' is deprecated: first deprecated in iOS 8.0 - Use CFPropertyListCreateWithData instead. [-Werror,-Wdeprecated-declarations] (CFPropertyListCreateFromXMLData(NULL, data, kCFPropertyListImmutable, ^ BUG=https://bugs.chromium.org/p/google-breakpad/issues/detail?id=675 BUG=569158 R=mark@chromium.org Review URL: https://codereview.chromium.org/1563223004 .
* Use range-based for loops in linux/minidump_writer/minidump_writer.cc.Lei Zhang2016-01-071-45/+32
| | | | | | | | Also fix lint errors. R=mark@chromium.org Review URL: https://codereview.chromium.org/1562273002 .
* Avoid comparing size_t to be < 0 on AArch64.Lei Zhang2016-01-061-2/+2
| | | | | | | | | | | | cpu_features_entries is empty on AArch64 and causes tautological-compare warning when compiling with Clang. A=dskiba@google.com Original Review: https://codereview.chromium.org/1562223002/ BUG=chromium:539781 Review URL: https://codereview.chromium.org/1566893002 .
* Make minidump-2-core.cc build with -Wformat.Lei Zhang2016-01-062-1/+7
| | | | | | | | | | A=thakis@chromium.org BUG=chromium:574817 Original Review: https://codereview.chromium.org/1562983002/ R=thakis@chromium.org Review URL: https://codereview.chromium.org/1563043002 .
* Fix -Wunused-function warnings in ASAN builds.Lei Zhang2015-12-301-6/+2
| | | | | | | | A=thakis@chromium.org BUG=chromium:573250 Original Review: https://codereview.chromium.org/1551963002/ Review URL: https://codereview.chromium.org/1551983002 .
* Let breakpad build with -Wall on OS X and Linux.Lei Zhang2015-12-299-29/+14
| | | | | | | | | A=thakis@chromium.org Original Review: https://codereview.chromium.org/1550933002/ R=thakis@chromium.org Review URL: https://codereview.chromium.org/1554613002 .
* Remove use of deprecated CFURLCreateDataAndPropertiesFromResource function.Ivan Penkov2015-12-181-12/+19
| | | | | | | | | Patch by Scott Hancher BUG= R=mark@chromium.org Review URL: https://codereview.chromium.org/1527363003 .
* Fix ExploitabilityLinuxUtilsTest::DisassembleBytesTest to not fail when temp ↵Ted Mielczarek2015-11-301-1/+3
| | | | | | | | | file ends with 0 R=ivanpe@chromium.org BUG=https://bugs.chromium.org/p/google-breakpad/issues/detail?id=668 Review URL: https://codereview.chromium.org/1482363003 .
* dump_syms: add a -v flagMike Frysinger2015-11-111-1/+16
| | | | | | | | | | | | dump_syms generates a lot of warnings. This CL puts logging behind a command line flag URL=https://android-review.googlesource.com/181558 BUG=b:25460551 BUG=google-breakpad:441 R=mark@chromium.org Review URL: https://codereview.chromium.org/1437763002 .
* Fix file descriptor leaks in linux CrashGenerationServerMike Frysinger2015-11-111-0/+3
| | | | | | R=ted.mielczarek@gmail.com Review URL: https://codereview.chromium.org/1137423004 .
* Make dump_syms buildable under newer versions of Xcode.Boris Vidolov2015-11-101-0/+4
| | | | | | | R=mark@chromium.org BUG= Review URL: https://codereview.chromium.org/1438483002 .
* Android: Workaround for ftruncate() issues.Lei Zhang2015-11-051-3/+69
| | | | | | | | | | | | | | | | | | This works around a bug in M that prevents Breakpad from using ftruncate() in the renderer process. To do this, skip the calls to ftruncate() when allocating bigger minidump files and strictly depends on write() to append to the end. It might be less efficient but this is probably less of an issue on SD cards. It is much better than not getting crash reports. BUG=542840 Original CL: https://codereview.appspot.com/273880044/ Original CL Author: acleung@chromium.org Review URL: https://codereview.chromium.org/1407233016 .
* Issue in StackwalkerAMD64::GetCallerByFramePointerRecovery.Ivan Penkov2015-10-153-9/+165
| | | | | | | | | | | | | | There is an issue in StackwalkerAMD64::GetCallerByFramePointerRecovery. Occasionally it produces invalid frames (instruction pointer == 0) which prevents the AMD64 stack walker from proceeding to do stack scanning and instead leads to premature termination of the stack walking process. For more details: http://crbug/537444 BUG= R=mark@chromium.org Review URL: https://codereview.chromium.org/1408973002 .
* Only release current_breakpad_ if it is defined.Benjamin Lerman2015-10-141-1/+1
| | | | | | R=mark@chromium.org Review URL: https://codereview.chromium.org/1402453006 .
* Fix Windows crash_generation_server for debug builds without -D_DEBUGTed Mielczarek2015-10-071-1/+1
| | | | | | | | | | | | Debug Gecko builds don't build with -D_DEBUG, so the ifdef in crash_generation_server doesn't work right. The MSDN documentation for assert says that it's enabled based on the absence of the NDEBUG define, so using that seems sensible. R=thestig@chromium.org BUG= Review URL: https://codereview.chromium.org/1398453002 .
* Support for multiple upload files in CrashReportSender/HTTPUploadDavid Major2015-10-069-58/+63
| | | | | | | | 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 .
* Fix MSVC build (including on 2015), drop some workarounds for MSVC older ↵Ted Mielczarek2015-10-067-39/+15
| | | | | | | | | | | | | | | | | | | than 2013. The Windows client gyp files were missing proc_maps_linux.cc for the unittest build. Adding that revealed some build errors due to it unconditionally including <inttypes.h>. Removing the workarounds in breakpad_types.h (and a few other places) made that build, which means that Visual C++ 2013 is now our minimum supported version of MSVC. Additionally I tried building with VC++ 2015 and fixed a few warnings (which were failing the build because we have /WX enabled) to ensure that that builds as well. BUG=https://code.google.com/p/google-breakpad/issues/detail?id=669 R=mark@chromium.org Review URL: https://codereview.chromium.org/1353893002 .
* Increasing the Breakpad stack walker max scan limit from 30 to 40.Ivan Penkov2015-10-054-6/+6
| | | | | | | | | | | | | | | | | | | | | Chrome started hitting some crashes in v8 jitted code which happens to be non ABI compliant and debuggers (including WinDBG) are unable to produce meaningful stack traces. The Breakpad stack walker has some builtin heuristics to deal with such cases. More specifically, when unable to find a good parent frame, it scans the raw stack to find a suitable parent frame. The max scan size was set at 30 pointers which was (apparently) not enough to recover in this case. I'm increasing it to 40 pointers. I confirmed that at 34 pointers it was able to recover however I'm setting it to 40 in order to it some slack. I needed to update two unittests which were expecting the previous scan limit. BUG= R=mark@chromium.org Review URL: https://codereview.chromium.org/1379433005 .
* [mac] Teach dump_syms to handle additional zerofill sectionsPavel Labath2015-09-301-1/+3
| | | | | | | | | | | | | | This patch allows dump_syms to handle S_THREAD_LOCAL_ZEROFILL and S_GB_ZEROFILL section in the same way as the more common S_ZEROFILL section. Previously, dump_syms would fail to dump a binary containing a __DATA,__thread_bss section, because it tried to look up its data (and failed). R=mark@chromium.org Review URL: https://codereview.chromium.org/1369233003 . Patch from Pavel Labath <labath@google.com>.
* Add GPU fingerprint information to breakpad microdumps.Primiano Tucci2015-09-287-81/+164
| | | | | | | | | | | | | | | | | | Although strictly the GPU fingerprint is defined by the build fingerprint, there is not currently a straightforward mapping from build fingerprint to useful GPU / GL driver information. In order to aid debugging of WebView crashes that occur in GL drivers, and to better understand the range of drivers and versions for feature blacklisting purposes, it is useful to have GPU fingerprints in breakpad microdumps. Landing this patch on behalf of Tobias Sargeant<tobiasjs@chromium.org> BUG=chromium:536769 R=primiano@chromium.org, thestig@chromium.org Review URL: https://codereview.chromium.org/1334473003 .
* Linux ExceptionHandler: don't allocate the CrashContext on the stackPrimiano Tucci2015-09-221-15/+27
| | | | | | | | | | | | | | | | | | | | | | | | | On Android the size of the alternate stack can be very small (8k). Even if breakpad uses sigaltstack to increase the size of the alternate stack during initialization, that call affects only the main thread. On Android, the libc's pthread initializer reset the sigaltstack to 8k. When entering a signal handler, the kernel typically pushes the context on the alternate stack. On arm64, sizeof(CrashContext) is ~5k, which leaves 3k of usable stack for breakpad. On top of that, breakpad allocates another struct CrashContext on the stack. In the case of Android arm64, then, breakpad ends up using 5k + 5k > 8k of stack, which causes a stack overflow. This got unnoticed in Android L, as the alternate stack didn't have red-zones between them, so breakpad was often happily overflowing onto the next thread's stack. This is not the case anymore [1]. This CL moves the CrashContext into a global variable. It should be safe as the ExceptionHandlers are serialized on a mutex. [1] https://android.googlesource.com/platform/bionic/+/595752f623ae88f7e4193a6e531a0805f1c6c4dc BUG=374 R=mark@chromium.org Review URL: https://codereview.chromium.org/1354923002 .
* Fixup a bad strcmp call landed in previous commitTed Mielczarek2015-09-161-1/+1
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* Fix Mac Breakpad host tools to build in Linux cross-compileTed Mielczarek2015-09-1633-190/+3496
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | We're working on building our Firefox Mac builds as a Linux cross-compile (https://bugzilla.mozilla.org/show_bug.cgi?id=921040) and we need symbol dumping to work. This change ports the Mac dump_syms tool to build and work on Linux. I've tested it and it produces identical output to running the tool on Mac. The bulk of the work here was converting src/common/mac/dump_syms.mm and src/tools/mac/dump_syms/dump_syms_tool.mm from ObjC++ to C++ and removing their use of Foundation classes in favor of standard C/C++. This won't compile out-of-the-box on Linux, it requires some Mac system headers that are not included in this patch. I have those tentatively in a separate patch to land in Gecko (http://hg.mozilla.org/users/tmielczarek_mozilla.com/mc/rev/5fb8da23c83c), but I wasn't sure if you'd be interested in having them in the Breakpad tree. We could almost certainly pare down the set of headers included there, I didn't spend too much time trying to minimize them (we primarily just need the Mach-O structs and a few associated bits). I just realized that this patch is missing updating the XCode project files (ugh). I'll fix that up in a bit. R=mark@chromium.org BUG=https://bugzilla.mozilla.org/show_bug.cgi?id=543111 Review URL: https://codereview.chromium.org/1340543002 .
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