Commit Graph

8 Commits

Author SHA1 Message Date
Teresa Johnson 8f778b283d [sanitizer_common] Add facility to get the full report path
Add a new interface __sanitizer_get_report_path which will return the
full path to the report file if __sanitizer_set_report_path was
previously called (otherwise it returns null). This is useful in
particular for memory profiling handlers to access the path which
was specified at compile time (and passed down via
__memprof_profile_filename), including the pid added to the path when
the file is opened.

There wasn't a test for __sanitizer_set_report_path, so I added one
which additionally tests the new interface.

Differential Revision: https://reviews.llvm.org/D91765
2020-11-19 09:19:12 -08:00
Matt Morehouse 62f190ce9a [sanitizer_common] Add __sanitizer_on_print to interface list.
Should fix the current Windows buildbot failure.

llvm-svn: 373530
2019-10-02 21:21:18 +00:00
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Matt Morehouse 52fd169035 [libFuzzer] Report at most one crash per input.
Summary:
Fixes https://github.com/google/sanitizers/issues/788/, a deadlock
caused by multiple crashes happening at the same time.  Before printing
a crash report, we now test and set an atomic flag.  If the flag was
already set, the crash handler returns immediately.

Reviewers: kcc

Reviewed By: kcc

Subscribers: llvm-commits, kubamracek

Differential Revision: https://reviews.llvm.org/D46277

llvm-svn: 331310
2018-05-01 21:01:53 +00:00
Alex Shlyapnikov 028c4cddad [Sanitizers] New sanitizer API to purge allocator quarantine.
Summary:
Purging allocator quarantine and returning memory to OS might be desired
between fuzzer iterations since, most likely, the quarantine is not
going to catch bugs in the code under fuzz, but reducing RSS might
significantly prolong the fuzzing session.

Reviewers: cryptoad

Subscribers: kubamracek, llvm-commits

Differential Revision: https://reviews.llvm.org/D39153

llvm-svn: 316347
2017-10-23 17:12:07 +00:00
Kostya Serebryany 82a41dd6c4 [asan] add one more argument to __sanitizer_print_memory_profile, remove a redundant weak definition.
llvm-svn: 297914
2017-03-15 23:27:14 +00:00
Marcos Pividori 0033fcf72e [sanitizer] Add weak hooks for Windows.
Add support for weak hooks on Windows, as we do on Linux and Darwin.
As we use the macro: `SANITIZER_INTERFACE_WEAK_DEF()` it was not necessary to
modify the header file: `sanitizer_common_interceptors.h`.

After this diff, many tests were fixed for libFuzzer.

Differential Revision: https://reviews.llvm.org/D29562

llvm-svn: 294409
2017-02-08 06:31:56 +00:00
Marcos Pividori 25527bf021 [sanitizer] Add list of symbols exported in sanitizers' interface.
Add a new auxiliary file to each sanitizer: sanitizer_interface.inc, listing all
the functions exported, with the macros: INTERFACE_FUNCTION() and
INTERFACE_WEAK_FUNCTION().
So, when we need to define or repeat a procedure for each function in the
sanitizer's interface, we can define the macros and include that header.
In particular, these files are needed for Windows, in the nexts commits.
Also, this files could replace the existing files: weak_symbols.txt for Apple.
Instead of reading weak_symbols.txt to get the list of weak symbols, we could
read the file sanitizer_interface.inc and consider all the symbols included with
the macro INTERFACE_WEAK_FUNCTION(Name).

In this commit, I only include these files to the sanitizers that work on
Windows. We could do the same for the rest of the sanitizers when needed.

I updated tests for: Linux, Darwin and Windows. If a new function is exported
but is not present in the interface list, the tests
"interface_symbols_[darwin|windows|linux].c" fail.

Also, I remove the comments: "/* OPTIONAL */" which are not required any more,
because we use the macro: INTERFACE_WEAK_FUNCTION() for weak functions.

Differential Revision: https://reviews.llvm.org/D29148

llvm-svn: 293682
2017-01-31 20:23:21 +00:00