The crash address from the microdump was never checked against
anything. Instead, the test was checking the value of a constant.
On 32-bit systems, an intptr_t cannot represent kCrashAddress
(0xDEADDEAD), causing a failure when the crash address is parsed
from the microdump. Instead, use uintptr_t, which matches the type
of kCrashAddress.
Change-Id: Ib5612743803609f7801dcfb98deaa8779e362025
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2100816
Reviewed-by: Mike Frysinger <vapier@chromium.org>
The _libc_fpstate struct tag is an implementation detail of glibc,
and musl uses a different struct tag, _fpstate.
Unfortunately, the public type fpregset_t is a pointer type, so is
not suitable for allocating storage, or referring to constant
storage. Instead, we can use std::remove_pointer<fpregset_t>::type
to refer to the pointed-to type, regardless of the struct tag.
Bug: google-breakpad:631
Change-Id: Iaf47f15b2d834dd8de839431f65a481e9b0c7f9e
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2096171
Reviewed-by: Mike Frysinger <vapier@chromium.org>
__WORDSIZE is an internal libc definition. Instead, we can use
ULONG_MAX from limits.h, whose value corresponds to the machine's
native word size.
Bug: google-breakpad:631
Change-Id: If69caf578286d678585d1510c01562b969b5061f
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2097352
Reviewed-by: Mike Frysinger <vapier@chromium.org>
sys/poll.h and sys/signal.h just redirect to the standardized
location for these headers, poll.h and signal.h.
On musl libc, including the incorrect header path results in a
warning, and since breakpad is built with -Werror, this is an error.
In exception_handler.cc, signal.h is already included earlier, so
we can drop the sys/signal.h include.
Bug: google-breakpad:631
Change-Id: If36d326453e3267d38a5b92ed1301f828e46befe
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2097344
Reviewed-by: Mike Frysinger <vapier@chromium.org>
This reverts commit 0c0e24f709.
Reason for revert: This is causing breakage on CrOS due to unhandled
enums and dwarf5 support is in limbo, so pull this back out for now.
Bug: google-breakpad:812
Change-Id: I22dd5d87efb8bc83596d51d15a6808c41afb3fd2
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2095872
Reviewed-by: Mark Mentovai <mark@chromium.org>
This reverts commit dbd454dbe4.
Reason for revert: The parent CL is causing breakage on CrOS due to
unhandled enums. Before we can revert that, we need to revert this.
Bug: google-breakpad:812
Change-Id: I7c2446f3cd8ed9f6411e90dbdd2434bc463b2f6c
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2095798
Reviewed-by: Mark Mentovai <mark@chromium.org>
Previously, dump_syms produced warnings whenever a DW_AT_specification
or DW_AT_abstract_origin attribute was a forward reference. 47cd498384
allowed those attributes to carry forward references, removing the
warnings altogether. It was not correct to remove the warnings entirely.
References that do not point to valid DIEs should still produce
warnings, whether a back reference or a forward reference.
This reintroduces those warnings as appropriate.
Bug: google-breakpad:813
Test: dumper_unittest SimpleCU.UnknownAbstractOrigin,Specifications.BadOffset
Change-Id: Ie7222c7a1886bab31423f27e2fbcce93e69625b3
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2090103
Reviewed-by: Mike Frysinger <vapier@chromium.org>
- "sym-upload-v2" protocol now supports specifying a symbol file "type".
- Known types are "breakpad" (default option, previously this was only
effectively the only option), "elf", "pe", "macho", "debug_only", "dwp",
"pdb", and "dsym".
- When type other than breakpad is specified, sym_upload tool requires
the code_file and debug_id value (that it otherwise would have gotten
from the text of the Breakpad symbol file).
- This ultimately means that sym_upload can be used to upload native
symbol files now, in addition to Breakpad symbol files.
Change-Id: I3a331ba16f199d1d0025df735716ba5de298f522
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2078670
Reviewed-by: Mark Mentovai <mark@chromium.org>
- Didn't used to support statically linked libcurl, now it does (like
HttpUpload does).
Change-Id: Ic014548225b129f0c1c9ffe6a671f5bd2352b6e6
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2068947
Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
Previously, the processor truncated the upper of two
overlapping module ranges to compensate for incorrect
reporting of module ranges by the Breakpad client.
Crashpad correctly reports module load ranges, so
this truncation strategy is no longer necessary.
However, when partitioned libraries are used, the base
library may have a range which encompasses the other
partitions. When this is combined with the truncate
upper merge strategy, the base library's executable
segment is truncated causing symbolization failures.
This patch changes Android's merge strategy to truncate
the lower range (which is still the base library, but
this strategy truncates from the high end of the
library's range, instead of its base).
Bug: b/149845120
Change-Id: Ic75ecd3e919432690740eb21ebd4265fc0bbaa86
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2067952
Reviewed-by: Mark Mentovai <mark@chromium.org>
* Renamed convert_UTF.c to convert_UTF.cc
* Enabled to use C++17 for [[clang::fallthrough]] defined in src/common/macros.h
Patch by Hiro Komatsu
Change-Id: I5de7f7dd4c8bf231a004144a5c82828c59ddcfd6
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2026761
Reviewed-by: Mark Mentovai <mark@chromium.org>
Stackwalk can't recover caller's register X30($LR) value by STACK CFI info.
This will lead unwinding stop immediately when fallback to frame pointer unwinder.
This PR will use try to use second last frame to recover register X30($LR) by frame pointer.
And we will give up correction if STACK CFI info doesn't agree with frame pointer info.
Bug: https://bugs.chromium.org/p/google-breakpad/issues/detail?id=808
Change-Id: I50649e3398e268b02ff297e83db21d05705c2a2d
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1992641
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
When __DARWIN_OPAQUE_ARM_THREAD_STATE64 is set (by default when building
for arm64e), fp, lr, sp, pc, and flags (but not x or cpsr) in thread
state are prepended with "__opaque" and intended to be accessed via
supplied getters which may also authenticate pointers. We don't want to
authenticate those pointers (since we expect they may be invalid and
want to recover those invalid values) so access them directly.
Bug: b/140375065
Change-Id: Ibe6c1dbfb5d68a9d350614445fa06d48873f8549
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1986868
Reviewed-by: Mark Mentovai <mark@chromium.org>
I have a project where we are trying to include breakpad as a git
submodule. The only problem getting it to build with ndk-build is that
the linux_syscall_support.h header is missing. Normally, this header
would be downloaded by the depot_tools. But we cannot install
depot_tools on our CI machines.
So, we would like to include the header as a separate submodule in our
repo. The only change we would need to make to breakpad to make that
work is to add this optional variable to the C header search path. In
the normal case, this variable will not be set and nothing will be
different. But we can set the variable to allow us to build without
installing depot_tools.
I have manually tested this using a separate project that links to
breakpad in this way.
Change-Id: Id116b2af1c1ba0a08464c213d8982b24a1821ee7
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1930179
Reviewed-by: Mark Mentovai <mark@chromium.org>
DW_AT_specification and DW_AT_abstract_origin attributes carry
references to other DIEs. Nothing prevents the DIEs referred to from
appearing later in .debug_info than the DIE containing the referring
attribute, but dump_syms incompletly implemented its handling of these
references, and was only able to resolve them when they were
back-references.
This will fix the chronic warnings produced by dump_syms of the form:
dump_syms: the DIE at offset <offset> has a {DW_AT_specification,
DW_AT_abstract_origin} attribute referring to the die at offset
<offset>, which either was not marked as {a declaration, an inline}, or
comes later in the file
Patch by Greg Clayton
Bug: breakpad:441
Change-Id: I98957d64a234c22afb6d0153f1bdc09e6a600b1d
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1946706
Reviewed-by: Mark Mentovai <mark@chromium.org>
Fix compilation of http_upload.cc with Windows gcc after 548ca6e3, by
moving the definition of GetFileContents(), so it comes after the
definition of WideToMBCP(), which it uses (under !_MSC_VER).
common/windows/http_upload.cc: In function ‘bool {anonymous}::GetFileContents(const wstring&, std::vector<char>*)’:
common/windows/http_upload.cc:80:19: error: ‘WideToMBCP’ was not declared in this scope
Change-Id: I1646b39263e97bbf3bd8cb1ae209be238023110f
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1928929
Reviewed-by: Mike Frysinger <vapier@chromium.org>
This code indicates termination under “kill” semantics due to a module’s
code signature becoming invalid.
Bug: chromium:1023239
Change-Id: I3d453af9ef6c6925edcf9c08dbd78e563877522f
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1930177
Reviewed-by: Robert Sesek <rsesek@chromium.org>
The file GTMLogger shipped with breakpad is a copy of the version
from google_toolbox_for_mac. Having uploader.mm depend on GTMLogger
causes pain to iOS projects that want to integrate both breakpad
and google_toolbox_for_mac.
Since the file uploader.mm mixed uses of fprintf and GTMLogger to
log errors and warning, convert it to only use fprintf to stderr.
Bug: none
Change-Id: I68313ccf6951676a2859f44225281813722096ba
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1911755
Reviewed-by: Mark Mentovai <mark@chromium.org>
A recent commit converted some source from C to C++. Chrome has
checks against unannotated switch case fallthroughs in C++ code, so the
converted source needs annotations.
Bug: 990190
Change-Id: Ib92435b4877be936f837928a70b552ec4975d42a
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1898429
Reviewed-by: Mark Mentovai <mark@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
This reverts commit 07411862ea.
We were a bit overzealous in removing “register” here. Both clang and
GCC correctly disallow “register” as a storage class specifier in C++17
mode by producing an error in ordinary use. However, they require
“register” to be specified for explicit register variables, and do not
produce an error in this case.
Change-Id: I223f2652c6da4215d6e8788d902e767c94b8c29d
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1894875
Reviewed-by: Mark Mentovai <mark@chromium.org>
3e56ef9d changed dump_syms to set the module name from DT_SONAME
expecting that clients were already using DT_SONAME when it was
present. The Breakpad client previously only used DT_SONAME as the name
for a module if it detected that it was likely mapped from a zip file.
This patch updates the Breakpad Linux client to always use the
DT_SONAME in minidumps if it's present.
Also included are changes to address comments that were missed from
that review.
Bug: 1016924
Change-Id: I4aae8c05e6793d4b0598049a8964ddd4cb0c6194
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1889231
Reviewed-by: Mark Mentovai <mark@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Make the following consistent within the file:
- 0x...ULL for unsigned literals.
- On pointers, put the asterisk with the type.
Context: Made a previous change and saw a mix of styles. Make it
consistent for the sake of visual consistency.
Bug: None
Change-Id: I0f80aedc0ca0295be3c70bd88822cbb82d0415ba
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1888434
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
Partitioned libraries generated with lld and llvm-objcopy currently
contain a superset of debug information, beyond what applies to the
library itself. This is because objcopy cannot split up debug
information by partition - instead, it places a copy of all debug
information into each partition.
In lieu of potential future support for lld or objcopy becoming able to
split up debug information, let dump_syms do the next best thing:
- Find the address ranges of all PT_LOAD segments in the lib.
- Supply these to the Module being generated.
- Filter additions to the Module based on these ranges.
Bug: 990190
Change-Id: Ib5f279f42e3f6ea79eed9665efbcc23c3c5d25dc
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1884699
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
The Breakpad and Crashpad clients will use an object's DT_SONAME as
the name for a module if it exists. Previously, linux dump_syms would
assume the basename of an input elf file matches that value, causing
symbol lookups to fail if they were mismatched. This patch updates
dump_syms to use DT_SONAME as the module name, if present.
Bug: 1016924
Change-Id: I5eff0cf06c703841df3fb552cb5a8e1e50a20c64
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1876763
Reviewed-by: Mike Frysinger <vapier@chromium.org>
"register" as a storage class specifier has been deprecated since C++11,
and has been removed from C++17 while remaining a reserved word. See
C++17 5.11 and C.4.3.
Change-Id: I2dbab8a7061cb680d902644d39ea1a7fbc930e5c
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1749329
Reviewed-by: Mike Frysinger <vapier@chromium.org>
A .dSYM may validly contain a __DWARF segment without any __debug_info
section. This can occur for Chromium Framework in a component build of
Chromium, because in that case, all of the code is in other libraries
that Chromium Framework depends on.
This was previously tested by an assertion, but the assertion did not
trigger in NDEBUG (release) builds. In NDEBUG builds, this condition
would lead to an out-of-bounds read, detected by AddressSanitizer.
Instead of an assertion, the check is now always done at runtime.
Instead of being fatal, it's now just a warning, because it's been
established that __DWARF without __debug_info can occur.
(In the Chromium case, it remains pointless to run dump_syms via the
"chrome_dump_syms" target on a component build, as it'll only attempt to
symbolize Chromium Framework, and not any of the libraries that Chromium
Framework depends on that actually contain the code.)
Bug: chromium:991206
Change-Id: I6c9c75f0be7901813e3eaae54aff38c1afe73ca9
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1741610
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Since target_ptr is of type uint16_t* already, we don't need to scale
the byte count as the language does that for us. If it were void*, we
would need this code, but it's not.
In practice it's probably not a big deal due to how we preallocated
memory: when converting UTF8->UTF16, we'd reserve the same number of
code units, and UTF8 takes more code units per codepoint than UTF16,
so the UTF16 vector is always oversized.
When converting UTF32->UTF16, we also reserve the same number of
code units, but since one UTF32 code unit could require two UTF16
code units (for U+10000 codepoints and higher), we would probably
corrupt memory in the process. The APIs in this module don't seem
to take into account that range in general, so for now I'm only
fixing the memory corruption.
Bug: google-breakpad:768
Change-Id: Ibfaea4e866733ff8d99b505e72c500bd40d11a74
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1732888
Reviewed-by: Mark Mentovai <mark@chromium.org>
Pointer authentication codes are used to validate pointers against
accidental or malicious modification by storing a hash of the address
and a secret value in the pointer's unused, upper bits. The exact
bits used may vary by implementation and depend on the size of the
virtual address space of the target system, and whether other tagged
pointer features are in use.
Apple has implemented PACs in the Apple A12.
https://developer.apple.com/documentation/security/preparing_your_app_to_work_with_pointer_authentication
The documented method of stripping PACs from a pointer is to call
ptrauth_strip(), which ultimately emits an `xpaci` instruction, but
this option isn't available to the Breakpad processor not running on
the device. Instead, this patch selects likely address bits from
link register values by examining the address range of loaded modules.
Change-Id: I054bd1a03605719937fc85dcc8d8b9fe927f44be
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1713650
Reviewed-by: Mark Mentovai <mark@chromium.org>
Now decoding the OS name and exception codes for Fuchsia. Still not decoding exception flags (can be added later, if needed).
Change-Id: If66cb000828be18f0c1b35d1b1f52b3ca3e1fd67
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1699049
Reviewed-by: Mark Mentovai <mark@chromium.org>
- I think I previously fixed this for dump_syms, but must have missed
the symupload one because it didn't have a gn target.
Change-Id: Ibf4daa0dc874f329c2ee7c7b3d4de1ee6bc68d13
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1682717
Reviewed-by: Mark Mentovai <mark@chromium.org>
- This is a workaround to an issue with gn/clang build of Windows
symbol converter where dbghelp.dll is loaded from system32/syswow64
instead of alongside the process exe.
- Why do we care where dbghelp.dll is loaded from? Two considerations:
1. dbghelp.dll will only load symsrv.dll from the directory where it
resides.
2. symsrv.dll requires a file called "symsrv.yes" to be in the
directory where it resides in order to work with MS symbol stores.
Therefore if we load dbghelp.dll from syswow64, then we must also
ensure there is a symsrv.dll and symsrv.yes file in syswow64.
Change-Id: Ia283a2c11e276c855a48157aa7be77897af4b02e
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1680670
Reviewed-by: Mark Mentovai <mark@chromium.org>
Reviewed-by: Ivan Penkov <ivanpe@chromium.org>
