| Commit message (Collapse) | Author | Age | Files | Lines |
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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 .
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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 .
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the microdump. The microdump OS/arch line looks like:
O A arm 04 armv7l 3.4.0-perf-g4d6e88e #1 SMP PREEMPT Mon Mar 30 19:09:30 2015
and currently the field that says "armv7l" or "aarch64" is being used
to fill in the CPU arch field in crash. The problem is that on a
64-bit device this field *always* says "aarch64" even when running in
a 32-bit process, and so currently the crash reports for aarch64 are
a mix of 32-bit and 64-bit crashes. We should be using the first field
instead, which just says "arm" or "arm64" and reflects the actual
version of webview (32-bit or 64-bit) which is running.
BUG=
R=primiano@chromium.org
Review URL: https://codereview.chromium.org/1306983003 .
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1498 4c0a9323-5329-0410-9bdc-e9ce6186880e
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If a crash occurred as a result to a write to unwritable memory, it is reason
to suggest exploitability. The processor checks for a bad write by
disassembling the command that caused the crash by piping the raw bytes near
the instruction pointer through objdump. This allows the processor to see if
the instruction that caused the crash is a write to memory and where the
target of the address is located.
R=ivanpe@chromium.org
Review URL: https://codereview.chromium.org/1273823004
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1497 4c0a9323-5329-0410-9bdc-e9ce6186880e
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R=ivanpe at https://codereview.chromium.org/1292503005/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1496 4c0a9323-5329-0410-9bdc-e9ce6186880e
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crrev.com/1298443002 has introduced a build failure by re-defining
__STDC_FORMAT_MACROS. Fixing it.
BUG=
R=mark@chromium.org, ted.mielczarek@gmail.com
Review URL: https://codereview.chromium.org/1303493003 .
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1493 4c0a9323-5329-0410-9bdc-e9ce6186880e
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R=ivanpe at https://codereview.chromium.org/1298443002/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1491 4c0a9323-5329-0410-9bdc-e9ce6186880e
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This CL also consequentially adds a public method to get the number of
mappings in a Linux minidump.
R=ivanpe@chromium.org
Review URL: https://codereview.chromium.org/1291603002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1488 4c0a9323-5329-0410-9bdc-e9ce6186880e
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mappings when rating Linux exploitability.
R=ivanpe@chromium.org
Review URL: https://codereview.chromium.org/1286033002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1487 4c0a9323-5329-0410-9bdc-e9ce6186880e
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R=ivanpe@chromium.org
Review URL: https://codereview.chromium.org/1288323003
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1486 4c0a9323-5329-0410-9bdc-e9ce6186880e
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git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1485 4c0a9323-5329-0410-9bdc-e9ce6186880e
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R=lei at https://codereview.chromium.org/1211963002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1484 4c0a9323-5329-0410-9bdc-e9ce6186880e
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R=ivanpe@chromium.org
Review URL: https://codereview.chromium.org/1280853003
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1483 4c0a9323-5329-0410-9bdc-e9ce6186880e
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MinidumpLinuxMapsList.
R=ivanpe@chromium.org
Review URL: https://codereview.chromium.org/1287803002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1482 4c0a9323-5329-0410-9bdc-e9ce6186880e
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contents of /proc/<pid>/maps instead of just the files mapped to memory.
Review URL: https://codereview.chromium.org/1273123002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1481 4c0a9323-5329-0410-9bdc-e9ce6186880e
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If there is a range overlap, the cause may be the client correction applied for Android packed relocations. If this is the case, back out the client correction and retry.
Patch from Simon Baldwin <simonb@chromium.org>.
https://code.google.com/p/chromium/issues/detail?id=509110
R=simonb@chromium.org
Review URL: https://codereview.chromium.org/1275173005
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1480 4c0a9323-5329-0410-9bdc-e9ce6186880e
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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
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Review URL: https://codereview.chromium.org/1266493002
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1477 4c0a9323-5329-0410-9bdc-e9ce6186880e
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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
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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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