I ran minidump_dump on a dump from Firefox on my Windows 10 machine
and noticed some streams that Breakpad didn't have names for.
Looking in minidumpapiset.h in the Windows 10 SDK finds these values
in MINIDUMP_STREAM_TYPE. There are also struct definitions for the
stream data for some of them (all but JavaScriptData), but I don't have
a particular need for those currently.
R=mark@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1884943002 .
Some projects will get build break because the comipler is confused when
searches for the standard stdio.h. Rename the wrapper file to avoid that.
renamed: src/common/stdio.h -> src/common/stdio_wrapper.h
modified: src/processor/minidump.cc
modified: src/processor/dump_context.cc
modified: src/processor/logging.cc
modified: src/processor/minidump.cc
modified: src/processor/minidump_processor.cc
modified: src/processor/stackwalk_common.cc
modified: src/processor/symbolic_constants_win.cc
R=mark@chromium.org, labath@google.com
Review URL: https://codereview.chromium.org/1864603002 .
Patch from Yunxiao Ma <yxma@google.com>.
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 .
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>.
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=669R=mark@chromium.org
Review URL: https://codereview.chromium.org/1353893002 .
If a MinidumpLinuxMapsList was created and destroyed without its Read method,
the program would have a segmentation fault because the destructor did not
check for a null maps_ field. Additional changes include additional
supplementary null checks, a potential memory leak fix, and some comment
removal.
Review URL: https://codereview.chromium.org/1271543002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1478 4c0a9323-5329-0410-9bdc-e9ce6186880e
when checking exploitability rating.
Linux minidumps do not support MD_MEMORY_INFO_LIST_STREAM, meaning the
processor cannot retrieve its memory mappings. However, it has its own
stream, MD_LINUX_MAPS, which contains memory mappings specific to Linux
(it contains the contents of /proc/self/maps). This CL allows the minidump
to gather information from the memory mappings for Linux minidumps.
In addition, exploitability rating for Linux dumps now use memory mappings
instead of checking the ELF headers of binaries. The basis for the change
is that checking the ELF headers requires the minidumps to store the memory
from the ELF headers, while the memory mapping data is already present,
meaning the size of a minidump will be unchanged.
As a result, of removing ELF header analysis, two unit tests have been removed.
Arguably, the cases that those unit tests check do not merit a high
exploitability rating and do not warrant a solid conclusion that was given
earlier.
R=ivanpe@chromium.org
Review URL: https://codereview.chromium.org/1251593007
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1476 4c0a9323-5329-0410-9bdc-e9ce6186880e
- Convert time_t values to UTC correctly. It is incorrect to cast a uint32_t*
to time_t* because the two types may have different widths. This is the
case on many 64-bit systems, where time_t is a 64-bit signed integer.
Conversion is unified in a single function, and additional uses of time_t
in minidump files not previously displayed in UTC are now displayed.
- Interpret the IMAGE_DEBUG_MISC structure correctly.
- When printing MINIDUMP_SYSTEM_INFO structures, always show the "x86" side
of the union, and state whether it's expected to be valid. (Existing
Breakpad-produced non-Windows minidumps for x86_64 use the "x86" side of
union, but Windows minidumps for x86_64 use the "other" side, so I want to
print both.)
R=ivanpe@chromium.org
Review URL: https://breakpad.appspot.com/5674002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1339 4c0a9323-5329-0410-9bdc-e9ce6186880e
Tested with a minidump containing a version 3 structure to validate the string conversion routines. Interestingly enough the time_zone names does not appear to be abbreviation as the documentation was suggesting but full names, e.g. Eastern Standard Time:
MDRawMiscInfo
size_of_info = 232
flags1 = 0xf7
process_id = 0x54c4
process_create_time = 0x51a9323c
process_user_time = 0x1
process_kernel_time = 0x0
processor_max_mhz = 3100
processor_current_mhz = 1891
processor_mhz_limit = 3100
processor_max_idle_state = 0x1
processor_current_idle_state = 0x1
The new fileds follow:
process_integrity_level = 0x1000
process_execute_flags = 0x4d
protected_process = 0
time_zone_id = 2
time_zone.bias = 300
time_zone.standard_name = Eastern Standard Time
time_zone.daylight_name = Eastern Daylight Time
Review URL: https://breakpad.appspot.com/617002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1204 4c0a9323-5329-0410-9bdc-e9ce6186880e
doesn't see the correct thread stack memory. Instead, it loads garbage
(from offset 0 of the minidump file - well that's not garbage, but it is
not the stack memory region either) and attempts to walk it. A typical
symptom of this issue is when you get a single stack frame after
processing - the context frame - for which you don't need stack memory.
This issue is caused by an invalid RVA in the memory descriptor stored
inside the MINIDUMP_THREAD structure for the thread. Luckily, the
invalid RVA is 0, and the start_of_memory_region appears to be correct,
so this issue can be easily detected and the correct memory region can be
loaded using an RVA specified in the MinidumpMemoryList.
I couldn't find a reasonable description on MSDN regarding
MINIDUMP_MEMORY_DESCRIPTOR.MINIDUMP_LOCATION_DESCRIPTOR having RVA of 0
except maybe for full dumps where the 64-bit version of the structure
(MINIDUMP_MEMORY_DESCRIPTOR64) is used and it has no RVA at all. It has
a 64-bit DataSize which if interpreted as the 32-bit structure will very
likely result in 0 for the RVA:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms680384(v=vs.85).aspx
Anyways, the dump that I looked at was not a full dump so 0 for RVA is a
bit puzzling (at least easily detectable):
...
Microsoft (R) Windows Debugger Version 6.2.9200.20512 X86
Copyright (c) Microsoft Corporation. All rights reserved.
...
User Mini Dump File: Only registers, stack and portions of memory are available
...
MINIDUMP_HEADER:
Version A793 (62F0)
NumberOfStreams 11
Flags 160
0020 MiniDumpWithUnloadedModules
0040 MiniDumpWithIndirectlyReferencedMemory
0100 MiniDumpWithProcessThreadData
Review URL: https://breakpad.appspot.com/606002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1194 4c0a9323-5329-0410-9bdc-e9ce6186880e
In order to better distinguish Android and Linux minidumps, introduce
a new MD_OS_ANDROID definition, and modify related source code accordingly.
Also append the build-fingerprint to the minidump location descriptor.
This gives more information about the system image the device runs on.
Review URL: https://breakpad.appspot.com/405002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@981 4c0a9323-5329-0410-9bdc-e9ce6186880e
Change MinidumpModuleList::GetMainModule() to use GetModuleAtIndex() instead
of GetModuleAtSequence() because the former gets the first module that was
in the minidump file, while the latter actually gets the first module when
sorted by address. While this is pretty much the same thing at the moment,
I have another change in the works that can sometimes affect the module
order in the file.
BUG=chromium-os:25355
TEST=Ran Breakpad tests
Review URL: https://breakpad.appspot.com/366001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@941 4c0a9323-5329-0410-9bdc-e9ce6186880e
The value of MD_CONTEXT_CPU_MASK in use assumes that only the lower 6 bits are used for flags, and the upper 26 bits are for the CPU type. However, as of Windows 7 SP1, the 7th bit is being used as a flag (per http://msdn.microsoft.com/en-us/library/hh134238%28v=vs.85%29.aspx and the Windows SDK headers). Adjusting MD_CONTEXT_CPU_MASK works, but unfortunately that masks off the existing value of MD_CONTEXT_ARM. This patch also changes the value of MD_CONTEXT_ARM and adjusts the minidump context reading machinery to gracefully handle minidumps with the old value.
R=mark at http://breakpad.appspot.com/302001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@831 4c0a9323-5329-0410-9bdc-e9ce6186880e
