Since we need a page-aligned allocation for a thread stack, explicitly
ask for one. (Scudo happens to just give us one anyway for an allocation
this large, but 32-bit jemalloc does not.)
Bug: http://b/277598913
Test: treehugger
Change-Id: I41eeb6aadb6a22bf5d9619e768e5e0a76617f747
wN: Specifies that a following b, d, i, o, u, x, or X
conversion specifier applies to an integer argument with
a specific width where N is a positive decimal integer with
no leading zeros
Bug: b/271903607
Test: adb shell
Change-Id: I688f6cefeb2e5c8325b007a59935a46f4116ac29
This isn't a very helpful way to say "realpath() failed":
```
bionic/tests/dlfcn_test.cpp:(1006) Failure in test dlfcn.dladdr_libc
Value of: realpath("/system/lib64/" "hwasan/libc.so", libc_realpath) == libc_realpath
Actual: false
Expected: true
```
Bug: http://b/278795547
Test: treehugger
Change-Id: I1078ab4a675b956327f2578086a1a5e7d8a2928b
Contrary to the old comment, POSIX says nothing about whether or not
tmpfile() respects $TMPDIR, and it's significantly more useful on
Android if it does (because there's no shared /tmp that everyone can
write to).
Bug: https://issuetracker.google.com/36991167
Test: treehugger
Change-Id: I3cc45adff167420f100c8ed1c63cba1ea67e9f70
Musl #defines utmp to utmpx, which causes the tests in utmp_test.cpp
to collide with the ones in utmpx_test.cpp. Skip the utmp_test.cpp
when building for musl.
Test: m USE_HOST_MUSL=true
Change-Id: Ie05ddf6e1fd8c3bcc687d2537c19b6ab70ab8d67
This mode instructs the linker to search for libraries in hwasan
subdirectories of all library search paths. This is set up to contain a
hwasan-enabled copy of libc, which is needed for HWASan programs to
operate. There are two ways this mode can be enabled:
* for native binaries, by using the linker_hwasan64 symlink as its
interpreter
* for apps: by setting the LD_HWASAN environment variable in wrap.sh
Bug: 276930343
Change-Id: I0f4117a50091616f26947fbe37a28ee573b97ad0
The recent header nullability additions and the corresponding source
cleanup made me notice that we're missing a couple of actions that most
of the other implementations have. They've also been added to the _next_
revision of POSIX, unchanged except for the removal of the `_np` suffix.
They're trivial to implement, the testing is quite simple too, and
if they're going to be in POSIX soon, having them accessible in older
versions of Android via __RENAME() seems useful. (No-one else has shipped
the POSIX names yet.)
Bug: http://b/152414297
Test: treehugger
Change-Id: I0d2a1e47fbd2e826cff9c45038928aa1b6fcce59
Now <utmpx.h> isn't any more useful on Android than <utmp.h> is, but it
is POSIX, and -- importantly -- we can implement it with just a header
file, so code can use it on every existing API level.
macOS does indeed only have the <utmpx.h> functions (although it does
still have the <utmp.h> header!), so potentially portable code might
want <utmpx.h> on Android. (glibc/musl both have both headers.)
Bug: https://github.com/landley/toybox/pull/213
Test: treehugger
Change-Id: Iaa88167708182009a63e2e1a15f11186b251ed02
While these tests were running, other native processes would get torture GWP-ASan. This can lead to OOMs.
Bug: 273904016
Change-Id: Ia813a73bfc1c379633be022dbf4b7d567069c731
Test: atest bionic-unit-tests (in presubmit)
This test was flaky because there was no synchronization between the end
of the test function scope and the jumper threads, resulting in a racy
use-after-scope when accessing the thread array. Fix it by joining the
threads before leaving the test function scope.
Replace the thread array access, which can race with the store to the
thread array in the main thread, with an access to a pre-initialized
variable, which acts as a kind of enforcement that the threads are done
before leaving the test.
Bug: 227390656
Change-Id: Icfbb0d7cae66c12e5ce31072c34529e3c5fdf563
We don't support running threads on a tagged stack. Untagging SP may
lead to accesses to the stack via a non-SP register, which will be tag
checked, and the check will fail. And indeed that's exactly what the
__bionic_clone function does in its first instruction. Fix the problem by
disabling HWASan and MTE stack tagging on CloneStartRoutine, and remove
the call to untag_address, as it is unnecessary.
Bug: 273807460
Change-Id: I94cc56c816897531c0113c856b54ec41b4aab874
The strerror_buf is way too large, so instead of using a separate
buffer for just this string, reuse the already existing buffer.
Increase the buffer size to cover the maximum errno string.
Add a unit test to verify that none of the errno values are cut off
in the async_safe_format_buffer function when passing %m.
Bug: 274474681
Test: New unit test passes.
Test: Changing the buffer to a small value and verify that the test fails.
Change-Id: I4cb4652709582a8a6b958e12de5d923ec950e6b6
clang-r487747 gets too clever and removes the store, even if it is
declared as volatile. Set optnone to prevent the compiler optimizing out
the store.
Test: atest CtsBionicTestCases
Bug: 271214588
Change-Id: I14a537ecd4657ee3f510ff531313bd9d56f22f47
This is a new mallopt option that will force purge absolutely
everything no matter how long it takes to purge.
Wrote a unit test for the new mallopt, and added a test to help
verify that new mallopt parameters do not conflict with each other.
Modified some benchmarks to use this new parameter so that we can
get better RSS data.
Added a new M_PURGE_ALL benchmark.
Bug: 243851006
Test: All unit tests pass.
Test: Ran changed benchmarks.
Change-Id: I1b46a5e6253538108e052d11ee46fd513568adec
Bug: 267386540
Test: All unit tests pass on normal build.
Test: All GWP ASan tests are skipped under hwasan.
Change-Id: I6d6860090b62e7187cf947de0a9bc30d00330554
