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* Sanitize dumped stacks to remove data that may be identifiable.Tobias Sargeant2017-01-311-51/+130
| | | | | | | | | | | | | | | In order to sanitize the stack contents we erase any pointer-aligned word that could not be interpreted as a pointer into one of the processes' memory mappings, or a small integer (+/-4096). This still retains enough information to unwind stack frames, and also to recover some register values. BUG=682278 Change-Id: I541a13b2e92a9d1aea2c06a50bd769a9e25601d3 Reviewed-on: https://chromium-review.googlesource.com/430050 Reviewed-by: Robert Sesek <rsesek@chromium.org>
* Switch the Linux minidump writer to use MDCVInfoELF for CV data.Ted Mielczarek2016-04-051-13/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | 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 .
* [MIPS]: Use mcontext_t structure for MIPSrmcilroy@chromium.org2015-04-211-1/+1
| | | | | | | | | | | | | | This change removes user_regs_struct and user_fpregs_struct structures for mips and uses mcontext_t instead. R=fdegans@chromium.org, mark@chromium.org, rmcilroy@chromium.org Review URL: https://breakpad.appspot.com/3744002 Patch from Gordana Cmiljanovic <Gordana.Cmiljanovic@imgtec.com>. git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1452 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Add Arm64 support to breakpad unittests.rmcilroy@chromium.org2014-04-081-0/+2
| | | | | | | | | BUG=354405,335641 R=mark@chromium.org Review URL: https://breakpad.appspot.com/1424002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1305 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Adding support for mips.gordana.cmiljanovic@imgtec.com2013-09-111-1/+4
| | | | | | | | | | | | | Support for mips cpu is added to all breakapad targets including unittests. BUG=none TEST=unittests Review URL: https://breakpad.appspot.com/614002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1212 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Linux: Fix builds on systems without PR_SET_PTRACER in linux/prctl.h.thestig@chromium.org2013-07-021-1/+5
| | | | | | | | R=thakis@chromium.org Review URL: https://breakpad.appspot.com/612002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1199 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Fix Android build more.thestig@chromium.org2013-07-011-0/+2
| | | | | | | | | | | | | Android doesn't have the Yama LSM, so this line isn't needed. (It doesn't compile either.) Original CL: https://breakpad.appspot.com/610002/ A=thakis@chromium.org R=mark@chromium.org Review URL: https://breakpad.appspot.com/611002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1198 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Make all linux ptrace dumper tests use a subprocessted.mielczarek@gmail.com2013-06-061-191/+203
| | | | | | Patch by Mike Hommey <mh@glandium.org>, R=ted at https://breakpad.appspot.com/550002/ git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1190 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Fix a "set but not used" compiler warning in a testmseaborn@chromium.org2013-05-101-1/+2
| | | | | | | | | | | | Add a missing assertion whose absence made the test ineffective. Make the test a little stricter too. BUG=none TEST="make check" to run the test + use "-Wall -Werror" Review URL: https://breakpad.appspot.com/592003 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1180 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Cleaning up google-breakpad source code of signed-unsigned comparison warningsivan.penkov@gmail.com2012-11-211-2/+3
| | | | | | | | http://breakpad.appspot.com/488002/ git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1083 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Don't bail if a thread's stack pointer is invalidmkrebs@chromium.org2012-10-081-0/+4
| | | | | | | | | | | | | | Currently, if a thread's stack pointer is not within a valid memory page, the minidump writing will fail with an error. This change allows an invalid stack pointer by simply setting the memory size to zero in the minidump. The processing code already checks for the size being zero, although it currently just gives an error (see https://breakpad.appspot.com/413002/). BUG=google-breakpad:499, chromium-os:34880 TEST=make check, manually ran minidump-2-core and core2md Review URL: https://breakpad.appspot.com/478002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1065 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Minidumps never contain MD_LINUX_DSO_DEBUG info when breakpad is in a shared ↵ted.mielczarek@gmail.com2012-09-191-1/+2
| | | | | | | | | library A=Mike Hommey <mh@glandium.org> R=ted at http://breakpad.appspot.com/422002/ git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1044 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Linux: Fix a bunch of clang errors from not handling return values.thestig@chromium.org2012-07-241-2/+3
| | | | | | Review URL: https://breakpad.appspot.com/421002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@995 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Fixing various compiler warnings and applying minor tweaks to allow running ofivan.penkov@gmail.com2012-07-021-18/+5
| | | | | | | | | | the mojority of breakpad unittests in Google. http://breakpad.appspot.com/399002/ git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@978 4c0a9323-5329-0410-9bdc-e9ce6186880e
* This change allows compiling the google-breakpad code using a global ↵ivan.penkov@gmail.com2012-06-281-1/+1
| | | | | | ::string class instead of std::string. For more details take a look at common/using_std_string.h git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@974 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Fix race in VerifyStackReadWithMultipleThreadsted.mielczarek2012-04-251-12/+20
| | | | | | | Patch by Chris Dearman <chris@mips.com> R=ted at http://breakpad.appspot.com/377002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@959 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Reap child in VerifyStackReadWithMultipleThreadsted.mielczarek2012-04-251-0/+7
| | | | | | | Patch by Chris Dearman <chris@mips.com> R=benchan at http://breakpad.appspot.com/378001 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@956 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Fix test addresses to use uintptr_t instead of u_int64_t.benchan@chromium.org2012-01-271-1/+1
| | | | | | | | | | | | | | | | When a variable is used to set (and lookup) MappingInfo's "start_addr" field, it needs to match types -- which is "uintptr_t". When Chrome OS updated the 'make' that's used for building, the 32-bit "char *" had sign-extended when cast up to a u_int64_t -- maybe because pointers were unsigned before and then changed to be signed -- and that caused the address lookup to fail. BUG=chromium-os:25355 TEST=Ran Breakpad unittests A=mkrebs@chromium.org Review URL: http://breakpad.appspot.com/345001 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@908 4c0a9323-5329-0410-9bdc-e9ce6186880e
* Implement core dump to minidump conversion.benchan@chromium.org2012-01-191-0/+430
This patch is part of a bigger patch that helps merging the breakpad code with the modified version in Chromium OS. Specifically, this patch makes the following changes: 1. Turn the LinuxDumper class into a base class and move ptrace related code into a new derived class, LinuxPtraceDumper. 2. Add a LinuxCoreDumper class, which is derived from LinuxDumper, to extract information from a crashed process via a core dump file instead of ptrace. 3. Add a WriteMinidumpFromCore function to src/client/linux/minidump_writer/minidump_writer.h, which uses LinuxCoreDumper to extract information from a core dump file. 4. Add a core2md utility, which simply wraps WriteMinidumpFromCore, for converting a core dump to a minidump. BUG=455 TEST=Tested the following: 1. Build on 32-bit and 64-bit Linux with gcc 4.4.3 and gcc 4.6. 2. Build on Mac OS X 10.6.8 with gcc 4.2 and clang 3.0 (with latest gmock). 3. All unit tests pass. 4. Run Chromium OS tests to test core2md. Review URL: http://breakpad.appspot.com/343001 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@905 4c0a9323-5329-0410-9bdc-e9ce6186880e
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