Currently, only Android supports using a hard-code page size. Make this
a bit more generic so any platform that wants to can use this.
In addition, add a getPageSizeLogCached() function since this value is
used in release.h and can avoid keeping this value around in objects.
Finally, change some of the release.h page size multiplies to shifts
using the new page size log value.
First commit of the stack is a clean reland, second is the fix.
There was a typo in the `static_assert` that meant we were asserting the
size of the pointer, not the struct.
Also changed `alignas` to be more intuitive, but that is NFC.
Ran builds in Android here: https://r.android.com/2954411
Accessing the PLT entries of hooks can lead a certain amount of
performance overhead. This is observed on certain tasks which will do a
bunch of malloc/free and their throughputs are impacted by the null
check of hooks.
Also add SCUDO_ENABLE_HOOKS_TESTS to select if we want to run the hook
tests. On some platforms they may have different ways to run the
wrappers tests (end-to-end tests) and test the hooks along with the
wrappers tests may not be feasible. Provide an option to turn it ON/OFF.
By default, we only verify the hook behavior in the scudo standalone
tests if SCUDO_ENABLE_HOOKS is defined or COMPILER_RT_DEBUG is true.
Reviewed By: cferris, fabio-d
Differential Revision: https://reviews.llvm.org/D158784
The SCUDO_FUZZ macro is either defined or not defined. The previous
code assumed it had a one or zero value, so change the setting of
SCUDO_SMALL_STACK_DEPOT based on defined(SCUDO_FUZZ).
Reviewed By: Chia-hungDuan
Differential Revision: https://reviews.llvm.org/D158459
The stack depot uses several megabytes of memory
which is a lot for Trusty.
Reviewed By: Chia-hungDuan
Differential Revision: https://reviews.llvm.org/D156392
Reduce `PrimaryRegionSizeLog` to 28U to be compatible with a 38bit user
address space on the fuchsia-riscv platform. `PrimaryGroupSizeLog` is
reduced to 19 to preserve 512 BatchGroups per region.
This change can be tested on Fuchsia with:
```
fx set --auto-dir bringup.riscv64 --with //bundles:boot_tests \
fx build bundles:boot_tests \
fx run-boot-test --args={-s,1} boot-libc-unittests \
--cmdline='--gtest_filter=-*DeathTest*:PthreadGetSet*:ScudoSecondaryTest*'
```
The gtest filter ignores pthread and death tests due to non-scudo
related issues on fuchsia-riscv (ScudoSecondaryTest includes a death
check).
Related Ticket: https://fxbug.dev/125263
Differential Revision: https://reviews.llvm.org/D148475
trusty.cpp and trusty.h define Trusty implementations of map and other
platform-specific functions. In addition to adding Trusty configurations
in allocator_config.h and size_class_map.h, MapSizeIncrement and
PrimaryEnableRandomOffset are added as configurable options in
allocator_config.h.
Background on Trusty: https://source.android.com/security/trusty
Differential Revision: https://reviews.llvm.org/D103578
Summary:
Some Android builds that we are interested in define `__BIONIC__`
but not `__ANDROID__`, so expand `SCUDO_ANDROID` to encompass those.
Reviewers: cferris, hctim, pcc, eugenis, morehouse
Subscribers: krytarowski, #sanitizers, llvm-commits
Tags: #sanitizers, #llvm
Differential Revision: https://reviews.llvm.org/D71772
Summary:
This is the initial check-in for the Standalone version of Scudo.
The project is initially going to live in scudo/standalone then will
replace scudo. See http://lists.llvm.org/pipermail/llvm-dev/2019-January/129113.html
for details.
This initial CL is meant to lay out the project structure, of both
code & tests, providing a minimal amount of functionalities, namely
various definitions, some atomic helpers and an intrusive list.
(empty.cc is just here to have a compilation unit, but will go away
in the upcoming CLs).
Initial support is restricted to Linux i386 & x86_64 in make files
and will be extended once things land & work.
We will grow organically from here, adding functionalities in limited
amounts.
Reviewers: morehouse, eugenis, vitalybuka, kcc, mcgrathr, flowerhack
Reviewed By: morehouse, vitalybuka
Subscribers: srhines, mgorny, krytarowski, delcypher, jfb, #sanitizers, llvm-commits
Tags: #llvm, #sanitizers
Differential Revision: https://reviews.llvm.org/D57412
llvm-svn: 353055
