| Commit message (Collapse) | Author | Age | Files | Lines |
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If the minidump module containing the instruction pointer has memory
containing the ELF header and program header table, when checking the
exploitability rating, the processor will use the ELF header data to determine
if the instruction pointer lies in an executable region of the module, rather
than just checking if it lies in a module.
R=ivanpe@chromium.org
Review URL: https://codereview.chromium.org/1233973002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1472 4c0a9323-5329-0410-9bdc-e9ce6186880e
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When I first added the exception whitelist, I meant to put the check before
checking the location of the instruction pointer. (I didn't notice that it
was after the other check until now.) The whitelist check is to quickly rule
out minidumps, and if checking the instruction pointer provided any useful
information, it would be pretty indicative that the exception causing the
dump is interesting.
R=ivanpe@chromium.org
Review URL: https://codereview.chromium.org/1211253009
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1469 4c0a9323-5329-0410-9bdc-e9ce6186880e
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finding the instruction/stack pointer for exploitability rating.
There was already a method that found the instruction pointer, so the files
for exploitability ratings had repeated code. Also a method for finding the
stack pointer is implemented in this CL.
R=ivanpe@chromium.org
Review URL: https://codereview.chromium.org/1210943005
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1468 4c0a9323-5329-0410-9bdc-e9ce6186880e
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If the exception reponsible for the crash is benign, such as a floating point
exception, we can rule out the possibility that the code is exploitable. This
CL checks for such exceptions and marks the dump as not exploitable if such an
exception is found.
R=ivanpe@chromium.org
Review URL: https://codereview.chromium.org/1212383004
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1467 4c0a9323-5329-0410-9bdc-e9ce6186880e
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exploitability ratings.
The stackwalker will now grab the instruction pointers for ARM and ARM64
architectures, so checking exploitability on ARM and ARM64 will no longer
return EXPLOITABILITY_ERR_PROCESSING.
R=ivanpe@chromium.org
Review URL: https://codereview.chromium.org/1216063004
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1466 4c0a9323-5329-0410-9bdc-e9ce6186880e
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in valid code for Linux exploitability rating.
This CL adds to the Linux exploitability checker by verifying that the
instruction pointer is in valid code. Verification is done by obtaining a
memory mapping of the crash and checking if the instruction pointer lies in
an executable region. If there is no memory mapping, the instruction pointer
is checked to determine if it lies within a known module.
R=ivanpe@chromium.org
Review URL: https://codereview.chromium.org/1210493003
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1464 4c0a9323-5329-0410-9bdc-e9ce6186880e
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The current code is relying on info->si_pid to figure out whether
the exception handler was triggered by a signal coming from the kernel
(that will re-trigger until the cause that triggered the signal has
been cleared) or from user-space e.g., kill -SIGNAL pid, which will NOT
automatically re-trigger in the next signal handler in the chain.
While the intentions are good (manually re-triggering user-space
signals), the current implementation mistakenly looks at the si_pid
field in siginfo_t, assuming that it is coming from the kernel if
si_pid == 0.
This is wrong. siginfo_t, in fact, is a union and si_pid is meaningful
only for userspace signals. For signals originated by the kernel,
instead, si_pid overlaps with si_addr (the faulting address).
As a matter of facts, the current implementation is mistakenly
re-triggering the signal using tgkill for most of the kernel-space
signals (unless the fault address is exactly 0x0).
This is not completelly correct for the case of SIGSEGV/SIGBUS. The
next handler in the chain will stil see the signal, but the |siginfo|
and the |context| arguments of the handler will be meaningless
(retriggering a signal with tgkill doesn't preserve them).
Therefore, if the next handler in the chain expects those arguments
to be set, it will fail.
Concretelly, this is causing problems to WebView. In some rare
circumstances, the next handler in the chain is a user-space runtime
which does SIGSEGV handling to implement speculative null pointer
managed exceptions (see as an example
http://www.mono-project.com/docs/advanced/runtime/docs/exception-handling/)
The fix herein proposed consists in using the si_code (see SI_FROMUSER
macros) to determine whether a signal is coming form the kernel
(and therefore just re-establish the next signal handler) or from
userspace (and use the tgkill logic).
Repro case:
This issue is visible in Chrome for Android with this simple repro case:
- Add a non-null pointer dereference in the codebase:
*((volatile int*)0xbeef) = 42
Without this change: the next handler (the libc trap) prints:
F/libc ( 595): Fatal signal 11 (SIGSEGV), code 1, fault addr 0x487
where 0x487 is actually the PID of the process (which is wrong).
With this change: the next handler prints:
F/libc ( 595): Fatal signal 11 (SIGSEGV), code 1, fault addr 0xbeef
which is the correct answer.
BUG=chromium:481937
R=mark@chromium.org
Review URL: https://breakpad.appspot.com/6844002.
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1461 4c0a9323-5329-0410-9bdc-e9ce6186880e
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The current processor implementation is grepping for /google-breakpad(
in the logcat lines, to filter out microdump lines, which by default
look like this:
W/google-breakpad( 3728): -----BEGIN BREAKPAD MICRODUMP-----
Turns out that logcat format can vary, when passing optional arguments,
and produce something like the following:
04-13 12:30:35.563 6531 6531 W google-breakpad: -----BEGIN ...
In the latter case, the "/google-breakpad(" filter is too aggressive.
This change is relaxing it, so it is compatible also with non-default
logcat arguments.
BUG=640
R=mmandlis@chromium.org
Review URL: https://breakpad.appspot.com/2864002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1442 4c0a9323-5329-0410-9bdc-e9ce6186880e
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ACCESS_VIOLATION and IN_PAGE_ERROR both specify
read/write/dep flags and address. ACCESS_VIOLATION currently
reports these, but IN_PAGE_ERROR does not. This change makes
IN_PAGE_ERROR report this information as well, and also the
additional NTSTATUS value for the underlying cause.
Patch by bungeman@chromium.org
Review URL: https://breakpad.appspot.com/1794002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1441 4c0a9323-5329-0410-9bdc-e9ce6186880e
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git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1430 4c0a9323-5329-0410-9bdc-e9ce6186880e
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This feature is enabled only when "-s" is provided as a commandline option.
minidump_stackwalk.cc:
- Add a new commandline option "-s" to output stack contents.
- Instantiate Minidump object in PrintMinidumpProcess() to keep it alive longer so that accessing process_state.thread_memory_regions() in stackwalk_common.cc doesn't result in use-after-free.
stackwalk_common.cc:
- Add a new function PrintStackContents() to output stack contents.
R=mark@chromium.org
Review URL: https://breakpad.appspot.com/9774002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1429 4c0a9323-5329-0410-9bdc-e9ce6186880e
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Review URL: https://breakpad.appspot.com/6684002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1418 4c0a9323-5329-0410-9bdc-e9ce6186880e
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These ranges can be seen in some Android minidumps.
BUG=chromium:439531
R=mark@chromium.org
Review URL: https://breakpad.appspot.com/9744002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1412 4c0a9323-5329-0410-9bdc-e9ce6186880e
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- Filter modules by prot flags (only +x) not extensions. It wouldn't
otherwise catch the case of Chrome mapping the library from the
apk (which is mapped r-x but doesn't end in .so).
- Use compile-time detection of target arch, in order to cope with
multilib OSes, where uname() doesn't reflect the run-time arch.
- Add OS information and CPU arch / count.
- Add support for aarch64.
- Add tests and stackwalk expectations for aarch64.
- Fix a potential overflow bug in the processor.
- Rebaseline the tests using smaller symbols.
- Fix microdump_writer_unittest.cc on 32-bit host.
BUG=chromium:410294
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1407 4c0a9323-5329-0410-9bdc-e9ce6186880e
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and updating minidump_stackwalk to show process uptime.
I tested this with a minidump from Chrome and I got a result that
is inline with what the Windows debugger is showing for that dump:
minidump_stackwalk output:
--------------------------
Process uptime: 601 seconds
WinDBG output:
--------------
Process Uptime: 0 days 0:10:01.000
I didn't update the machine readable output of minidump_stackwalk
on purpose in order to avoid breaking someone that uses it.
It can be added later to the machine output if needed.
R=mark@chromium.org
Review URL: https://breakpad.appspot.com/7754002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1406 4c0a9323-5329-0410-9bdc-e9ce6186880e
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This introduces the microdump_stackwalk binary which takes advantage
of the MicrodumpProcessor to symbolize microdumps.
Its operation is identical to the one of minidump_stackwalk.
This CL, in fact, is also refactoring most of the common bits into
stackwalk_common.
BUG=chromium:410294
R=mmandlis@chromium.org
Review URL: https://breakpad.appspot.com/4704002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1405 4c0a9323-5329-0410-9bdc-e9ce6186880e
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According to design document: http://goo.gl/B3wIRN
This is an initial implementation version, support ARM architecture only.
BUG=chromium:410294
R=primiano@chromium.org
Review URL: https://breakpad.appspot.com/5714003
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1403 4c0a9323-5329-0410-9bdc-e9ce6186880e
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BUG=https://code.google.com/p/google-breakpad/issues/detail?id=606
R=primiano@chromium.org
Review URL: https://breakpad.appspot.com/6734002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1381 4c0a9323-5329-0410-9bdc-e9ce6186880e
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processing upcoming implementation.
dump_context.cc and dump_object.cc added in r/1370
microdump_processor.cc and microdump_processor_unittest.cc added in
r/1372
BUG=chromium:410294
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1373 4c0a9323-5329-0410-9bdc-e9ce6186880e
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Adds the interfaces for MicrodumpProcessor (very similar to
MinidumpProcessor) and corresponding unittest stubs.
These stubs are required for multi-side integration and to start
rolling the updated processor library into the dependent projects.
BUG=chromium:410294
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1372 4c0a9323-5329-0410-9bdc-e9ce6186880e
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git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1370 4c0a9323-5329-0410-9bdc-e9ce6186880e
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This GYP-ifies the src/processor and src/common directories on those platforms
as well. The Makefile build uses much more granular unittest executables, so
the new processor_unittests does not yet link because of multiple main() symbols,
but this will be fixed later.
Update issue 575
R=mark@chromium.org
Review URL: https://breakpad.appspot.com/10674002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1358 4c0a9323-5329-0410-9bdc-e9ce6186880e
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BUG=https://code.google.com/p/chromium/issues/detail?id=393594
R=mark@chromium.org
Review URL: https://breakpad.appspot.com/10664002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1350 4c0a9323-5329-0410-9bdc-e9ce6186880e
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R=mark at https://breakpad.appspot.com/3704002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1347 4c0a9323-5329-0410-9bdc-e9ce6186880e
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using it
A=Jim Chen <nchen@mozilla.com>
R=ted at https://bugzilla.mozilla.org/show_bug.cgi?id=1033006
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1346 4c0a9323-5329-0410-9bdc-e9ce6186880e
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R=mark@chromium.org
Review URL: https://breakpad.appspot.com/10654002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1340 4c0a9323-5329-0410-9bdc-e9ce6186880e
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- 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
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that it is not enough to check the size of an MDRawMiscInfo stream to verify
member validity, the flags1 field needs to be consulted as well. Update
minidump_dump to correctly consider the validity of all fields in this
structure.
R=ivanpe@chromium.org
Review URL: https://breakpad.appspot.com/3694002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1336 4c0a9323-5329-0410-9bdc-e9ce6186880e
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R=mark@chromium.org
Review URL: https://breakpad.appspot.com/7654002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1335 4c0a9323-5329-0410-9bdc-e9ce6186880e
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This CL adds CFI based stack walking support for Arm64 to BreakPad along with
unit tests. The Arm64 CFI stack walker is based on the Arm CFI stack walker
BUG=367367,335641,354405
R=blundell@chromium.org, mark@chromium.org
Review URL: https://breakpad.appspot.com/1664002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1325 4c0a9323-5329-0410-9bdc-e9ce6186880e
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These warnings are fatal in my GYP-generated debug build.
The warnings can be seen on Linux/Mac with -Wshorten-64-to-32.
R=mark@chromium.org
Review URL: https://breakpad.appspot.com/944002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1264 4c0a9323-5329-0410-9bdc-e9ce6186880e
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Review URL: https://breakpad.appspot.com/934002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1263 4c0a9323-5329-0410-9bdc-e9ce6186880e
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Review URL: https://breakpad.appspot.com/794002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1241 4c0a9323-5329-0410-9bdc-e9ce6186880e
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Patch by Colin Blundell <blundell@chromium.org>
BUG=542
Review URL: https://breakpad.appspot.com/704002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1236 4c0a9323-5329-0410-9bdc-e9ce6186880e
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.raSearchStart in the cases where there are alignment operators in
the program string.
If alignment operators are found in the program string, the current
value of %ebp must be valid and it is the only reliable data point
that can be used for getting to the previous frame. Previously, the
.raSearchStart calculation was based on %esp and when %esp is aligned
in the current frame (which is a lossy operation) the resulting
.raSearchStart cannot was incorrect. There is code that is trying to
work around this problem (scanning of up to 3 words for a return
address) which is unreliable and it doesn't work in many cases (e.g.
when the alignment is on a 64-byte boundary).
This fix is already deployed in Google and it was measured to reduce
the number of wrong stack traces (for Windows crashes) by 45%. No
regressions have been found so far.
Here is an example of an issue that was fixed by this change (where
register %esp is aligned on the 64-byte boundary and the workarounds
that we already had didn't work):
https://code.google.com/p/chromium/issues/detail?id=311359
0:013> uf chrome_59630000!base::MessagePumpForIO::DoRunLoop
518 59685c39 55 push ebp
518 59685c3a 8bec mov ebp,esp
518 59685c3c 83e4c0 and esp,0FFFFFFC0h <== 64-byte boundary
518 59685c3f 83ec34 sub esp,34h
518 59685c42 53 push ebx
518 59685c43 56 push esi
Program string contains 64-byte alignment:
$T1 .raSearch = $T0 $T1 4 - 64 @ = $ebp $T1 4 - ^ = $eip $T1 ^ =
$esp $T1 4 + = $20 $T0 56 - ^ = $23 $T0 60 - ^ = $24 $T0 64 - ^ =
Review URL: https://breakpad.appspot.com/694002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1232 4c0a9323-5329-0410-9bdc-e9ce6186880e
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The minimum log level can be set by defining to macro BPLOG_MINIMUM_SEVERITY
to one of google_breakpad::LogStream::Severity values. The default is
SEVERITY_INFO.
BUG=none
R=mark@chromium.org
Review URL: https://breakpad.appspot.com/724002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1231 4c0a9323-5329-0410-9bdc-e9ce6186880e
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Building with clang triggers warnings (which for us breaks the build):
src/processor/map_serializers_unittest.cc:52:11: error:
unused variable 'kSizeOfInt' [-Werror,-Wunused-const-variable]
1 error generated.
Fix by Yunlian Jiang.
BUG=chromium:311720 (http://crbug.com/311720)
TEST=FEATURES="test" emerge-lumpy google-breakpad passes
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1229 4c0a9323-5329-0410-9bdc-e9ce6186880e
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https://breakpad.appspot.com/622002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1227 4c0a9323-5329-0410-9bdc-e9ce6186880e
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https://breakpad.appspot.com/622002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1226 4c0a9323-5329-0410-9bdc-e9ce6186880e
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platforms.
One test from stackwalker_mips_unittest was failing as mentioned in:
https://breakpad.appspot.com/632002/
https://breakpad.appspot.com/633002/
BUG=none
TEST=stackwalker_mips_unittest (run on x86-64 and mips)
Review URL: https://breakpad.appspot.com/634002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1218 4c0a9323-5329-0410-9bdc-e9ce6186880e
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More specifically, the validation of the following record types is improved:
- FILE records
- FUNC records
- Line record
- PUBLIC records
Adding unittests.
Review URL: https://breakpad.appspot.com/632003
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1217 4c0a9323-5329-0410-9bdc-e9ce6186880e
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functions are associated with a source file but not associated with any line number. For such functions, the Breakpad symbol file contains 0 for the line numbers. Hence, 0 should be threated as valid line number. For more information on block helper functions, please, take a look at http://clang.llvm.org/docs/Block-ABI-Apple.html.
Here is the symbol parser output:
E0906 11:27:06.051507 22535 basic_source_line_resolver.cc:76] Line 380187: ParseLine failed
E0906 11:27:06.051614 22535 basic_source_line_resolver.cc:76] Line 380188: ParseLine failed
E0906 11:27:06.051648 22535 basic_source_line_resolver.cc:76] Line 380190: ParseLine failed
E0906 11:27:06.051679 22535 basic_source_line_resolver.cc:76] Line 380191: ParseLine failed
E0906 11:27:06.200814 22535 basic_source_line_resolver.cc:76] Line 446729: ParseLine failed
Here are the contents of the Breakpad symbol file:
FUNC 440d60 49 0 __copy_helper_block_
440d60 b 0 3160 <<<----------- the third number is the line number
440d6b 3e 0 3160 <<<---------------------------- same here
FUNC 440db0 36 0 __destroy_helper_block_
440db0 a 0 3160 <<<---------------------------- same here
440dba 2c 0 3160 <<<---------------------------- same here
Review URL: https://breakpad.appspot.com/629002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1214 4c0a9323-5329-0410-9bdc-e9ce6186880e
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BUG=none
TEST=build
Review URL: https://breakpad.appspot.com/630002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1213 4c0a9323-5329-0410-9bdc-e9ce6186880e
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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
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Since nacl was not listed in decoding the code identifier, minidump_dump
produces errors like this (and non-zero return code):
2013-09-05 13:41:04: minidump.cc:2044: ERROR: MinidumpModule code_identifier
requires known platform, found 0x8205
BUG=https://code.google.com/p/nativeclient/issues/detail?id=3424
TEST=tested with minidumps from nacl locally
R=mark@chromium.org,mseaborn@chromium.org
Review URL: https://breakpad.appspot.com/628002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1211 4c0a9323-5329-0410-9bdc-e9ce6186880e
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Review URL: https://breakpad.appspot.com/624002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1209 4c0a9323-5329-0410-9bdc-e9ce6186880e
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This creates a new frame trust type for prewalked stack frames, as suggested in
the review of https://breakpad.appspot.com/620002/.
R=ted.mielczarek@gmail.com, mark@chromium.org
Review URL: https://breakpad.appspot.com/621002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1208 4c0a9323-5329-0410-9bdc-e9ce6186880e
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This creates a pseudo stack-walker which does nothing except symbolize an
already walked array of addresses. Will be used for adding 'additional stack
trace' support to MinidumpProcessor.
R=mark@chromium.org, ivan.penkov@gmail.com
Review URL: https://breakpad.appspot.com/620002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1207 4c0a9323-5329-0410-9bdc-e9ce6186880e
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Patch by Julian Seward <jseward@acm.org> R=ted at https://bugzilla.mozilla.org/show_bug.cgi?id=894264
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1206 4c0a9323-5329-0410-9bdc-e9ce6186880e
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MINIDUMP_MISC_INFO_N structure. Added the necessary code for swapping and string conversion from UTF-16. Found and fixed a bug in MinidumpAssertion::Read where the max string length passed to UTF16codeunits was in bytes instead of UTF-16 chars.
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
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