mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-26 22:32:46 +00:00
327 lines
12 KiB
C++
327 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/Attributes.h"
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#include "mozilla/TsanOptions.h"
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#ifndef _MSC_VER // Not supported by clang-cl yet
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//
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// When running with ThreadSanitizer, we sometimes need to suppress existing
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// races. However, in any case, it should be either because
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//
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// 1) a bug is on file. In this case, the bug number should always be
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// included with the suppression.
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//
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// or 2) this is an intentional race. Please be very careful with judging
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// races as intentional and benign. Races in C++ are undefined behavior
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// and compilers increasingly rely on exploiting this for optimizations.
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// Hence, many seemingly benign races cause harmful or unexpected
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// side-effects.
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//
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// See also:
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// https://software.intel.com/en-us/blogs/2013/01/06/benign-data-races-what-could-possibly-go-wrong
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//
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//
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// Also, when adding any race suppressions here, make sure to always add
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// a signature for each of the two race stacks. Sometimes, TSan fails to
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// symbolize one of the two traces and this can cause suppressed races to
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// show up intermittently.
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//
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// clang-format off
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extern "C" const char* __tsan_default_suppressions() {
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return "# Add your suppressions below\n"
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// External uninstrumented libraries
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MOZ_TSAN_DEFAULT_EXTLIB_SUPPRESSIONS
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// TSan internals
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"race:__tsan::ProcessPendingSignals\n"
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"race:__tsan::CallUserSignalHandler\n"
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// Uninstrumented code causing false positives
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// These libraries are uninstrumented and cause mutex false positives.
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// However, they can be unloaded by GTK early which we cannot avoid.
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"mutex:libGL.so\n"
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"mutex:libGLdispatch\n"
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"mutex:libGLX\n"
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// Bug 1637707 - permanent
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"mutex:libEGL_mesa.so\n"
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// ~GLContextGLX unlocks a libGL mutex.
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"mutex:GLContextGLX::~GLContextGLX\n"
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// Bug 1825171
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"mutex:libffi.so\n"
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"mutex:wl_registry_destroy\n"
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// Bug 1824768
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"mutex:libdbus-1\n"
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"mutex:swrast_dri.so\n"
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// Bug 1651446 - permanent (ffmpeg)
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"race:libavcodec.so*\n"
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"race:libavutil.so*\n"
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// For some reason, the suppressions on libpulse.so
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// through `called_from_lib` only work partially.
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"race:libpulse.so\n"
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"race:pa_context_suspend_source_by_index\n"
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"race:pa_context_unref\n"
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"race:pa_format_info_set_prop_string_array\n"
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"race:pa_stream_get_index\n"
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"race:pa_stream_update_timing_info\n"
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"race:vorbis_synthesis_init\n"
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// This is a callback from libglib-2 that is apparently
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// not fully suppressed through `called_from_lib`.
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"race:g_main_context_dispatch\n"
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// This is likely a false positive involving a mutex from GTK.
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// See also bug 1642653 - permanent.
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"mutex:GetMaiAtkType\n"
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// Bug 1688716 - Failure due to fire_glxtest_process
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// calling into uninstrumented external graphics driver code.
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// For example: iris_dri.so and swrast_dri.so.
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"race:fire_glxtest_process\n"
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"race:iris_dri\n"
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// Bug 1824768
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"race:libLLVM-12\n"
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"race:radeonsi_dri\n"
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// Bug 1722721 - WebRender using uninstrumented Mesa drivers
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"race:swrast_dri.so\n"
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// Bug 1825171
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"race:libffi.so\n"
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"race:mozilla::widget::WaylandBuffer::BufferReleaseCallbackHandler\n"
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// Deadlock reports on single-threaded runtime.
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//
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// This is a known false positive from TSan where it reports
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// a potential deadlock even though all mutexes are only
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// taken by a single thread. For applications/tasks where we
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// are absolutely sure that no second thread will be involved
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// we should suppress these issues.
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//
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// See also https://github.com/google/sanitizers/issues/488
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// Bug 1614605 - permanent
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"deadlock:SanctionsTestServer\n"
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"deadlock:OCSPStaplingServer\n"
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// Bug 1643087 - permanent
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"deadlock:BadCertAndPinningServer\n"
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// Bug 1606804 - permanent
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"deadlock:cert_storage::SecurityState::open_db\n"
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"deadlock:cert_storage::SecurityState::add_certs\n"
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// Bug 1651770 - permanent
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"deadlock:mozilla::camera::LockAndDispatch\n"
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// Bug 1606804 - permanent
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"deadlock:third_party/rust/rkv/src/env.rs\n"
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// Bug 1680655 - permanent
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"deadlock:EncryptedClientHelloServer\n"
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// Bug 1682861 - permanent
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"deadlock:nsDOMWindowUtils::CompareCanvases\n"
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// Benign races in third-party code (should be fixed upstream)
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// No Bug - permanent
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// No Upstream Bug Filed!
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//
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// SIMD Initialization in libjpeg, potentially runs
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// initialization twice, but otherwise benign. Init
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// routine itself is in native assembler.
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"race:init_simd\n"
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"race:simd_support\n"
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"race:jsimd_can_ycc_rgb\n"
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// Bug 1615228 - permanent
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// No Upstream Bug Filed!
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//
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// Likely benign race in ipc/chromium/ where we set
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// `message_loop_` to `NULL` on two threads when stopping
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// a thread at the same time it is already finishing.
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"race:base::Thread::Stop\n"
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// Bug 1615569 - permanent
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// No Upstream Bug Filed!
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//
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// NSS is using freebl from two different threads but freebl isn't
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// that threadsafe.
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"race:mp_exptmod.max_window_bits\n"
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// Bug 1652499 - permanent
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// No Upstream Bug Filed!
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//
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// Likely benign race in webrtc.org code - race while updating the
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// minimum log severity.
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"race:Loggable\n"
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"race:UpdateMinLogSeverity\n"
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// Bug 1652174 - permanent
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// Upstream Bug: https://github.com/libevent/libevent/issues/777
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//
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// Likely benign write-write race in libevent to set a sticky boolean
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// flag to true.
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"race:event_debug_mode_too_late\n"
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// Bug 1653618 - permanent
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// Upstream Bug: https://github.com/sctplab/usrsctp/issues/507
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//
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// Might lead to scheduled timers in libusrsctp getting dropped?
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"race:sctp_handle_tick\n"
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"race:sctp_handle_sack\n"
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// Bug 1648604 - permanent
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// Upstream Bug: https://github.com/sctplab/usrsctp/issues/482
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//
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// Likely benign race in libusrsctp allocator during a free.
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"race:system_base_info\n"
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// Benign lock-order-inversion in libusrsctp
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// No upstream bug filed!
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"deadlock:sctp_add_to_readq\n"
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// Bug 1153409 - permanent
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// No Upstream Bug Filed!
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//
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// Probably benign - sqlite has a few optimizations where it does
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// racy reads and then does properly synchronized integrity checks
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// afterwards. Some concern of compiler optimizations messing this
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// up due to "volatile" being too weak for this.
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"race:third_party/sqlite3/*\n"
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"deadlock:third_party/sqlite3/*\n"
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// Bug 1674770 - permanent
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// Upstream Bug: https://github.com/Amanieu/parking_lot/issues/257
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//
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// parking_lot using incorrect atomic orderings in RwLock, upstream
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// fix already up for review.
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"race:StrongRuleNode::ensure_child\n"
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// No Bug - permanent
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// Upstream Bugs:
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//
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// * https://github.com/rayon-rs/rayon/issues/812
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// * https://github.com/crossbeam-rs/crossbeam/issues/589
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//
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// Probably a false-positive from crossbeam's deque not being
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// understood by tsan.
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"race:crossbeam_deque*::resize\n"
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"race:crossbeam_deque*::push\n"
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"race:crossbeam_deque*::write\n"
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"race:crossbeam_deque*::read\n"
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"race:crossbeam_deque*::steal\n"
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// Bug 1805819 - permanent
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// No Upstream Bug Filed!
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//
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// False positive in libc's tzset_internal
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// See https://crbug.com/379738 also
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"race:tzset_internal\n"
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// The rest of these suppressions are miscellaneous issues in gecko
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// that should be investigated and ideally fixed.
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// Bug 1671574 - Permanent
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// The StartupCache thread intentionally races with the main thread to
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// trigger OS-level paging. It is never joined with the main thread.
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"thread:StartupCache\n"
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// Bug 1734262 - Permanent
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// When spawning async processes, we create a helper thread to wait for
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// the process to terminate in order to asynchronously report the exit
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// code to Gecko. This thread waits on a syscall for the process to end,
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// which means there's no easy way to cancel and join it during Gecko
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// shutdown. Suppress thread leak reports for this thread.
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"thread:CreateMonitorThread\n"
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// Bug 1601600
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"race:SkARGB32_Blitter\n"
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"race:SkARGB32_Shader_Blitter\n"
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"race:SkARGB32_Opaque_Blitter\n"
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"race:SkRasterPipelineBlitter\n"
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"race:Clamp_S32_D32_nofilter_trans_shaderproc\n"
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"race:SkSpriteBlitter_Memcpy\n"
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// Bug 1606800
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"race:CallInitFunc\n"
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// Bug 1606803
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"race:ipv6_is_present\n"
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// Bug 1615123
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"race:_dl_deallocate_tls\n"
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"race:__libc_memalign\n"
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// Bug 1664803
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"race:Sampler::sSigHandlerCoordinator\n"
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// Bug 1656068
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"race:WebRtcAec_Create\n"
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// No Bug - Logging bug in Mochitests
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"race:mochitest/ssltunnel/ssltunnel.cpp\n"
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// This thread does not seem to be stopped/joined.
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// ImageBridgeChild should be turned back into a background
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// task queue in bug 1647628, in which case these suppressions
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// can be removed.
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"race:mozilla::layers::ImageBridgeChild::ShutDown\n"
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// Bug 1652530
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"mutex:XErrorTrap\n"
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// Bug 1671601
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"race:CamerasParent::ActorDestroy\n"
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"race:CamerasParent::DispatchToVideoCaptureThread\n"
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// Bug 1623541
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"race:VRShMem::PullSystemState\n"
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"race:VRShMem::PushSystemState\n"
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"race:VRShMem::PullBrowserState\n"
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"race:VRShMem::PushBrowserState\n"
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// Bug 1682951
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"race:storage::Connection::Release\n"
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// Bug 1683357
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"race:image::ImageSurfaceCache::SuggestedSizeInternal\n"
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"race:image::RasterImage::SetMetadata\n"
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"race:image::RasterImage::GetWidth\n"
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// Bug 1722721 - This is a benign race creating worker/SW compositor threads.
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"race:webrender::profiler::register_thread\n"
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// Bug 1722721 - This is a false positive during SW-WR rendering.
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"race:scale_blit\n"
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"race:mozilla::gl::MesaMemoryLeakWorkaround\n"
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// Bug 1733908
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"race:js::wasm::Code::bestTier\n"
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"race:js::wasm::Code::commitTier2\n"
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"race:js::wasm::Code::setTier2\n"
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"race:js::wasm::Code::setAndBorrowTier2\n"
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// Bug 1755449
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// The Glean init thread is used to perform I/O and other blocking operations.
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// It is never joined with the main thread, but this is being re-evaluated.
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"thread:glean::initialize\n"
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// Bug 1822605 - permanent
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// A race exists in libvulkan_lvp.so. This was previously addressed in bug
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// 1816713. However, libvulkan_lvp.so is unloaded so a called_from_lib
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// suppression cannot be used.
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"race:libvulkan_lvp.so\n"
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// Bug 1894073 - false positive
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// TSan isn't aware of IPC; see bug for detailed explanation.
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"race:LaunchAppWithForkServer\n"
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// End of suppressions.
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; // Please keep this semicolon.
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}
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// clang-format on
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#endif // _MSC_VER
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