Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 194 insertions, 0 deletions

diff --git a/mozglue/build/AsanOptions.cpp b/mozglue/build/AsanOptions.cpp
new file mode 100644
index 0000000000..a2539e450d
--- /dev/null
+++ b/mozglue/build/AsanOptions.cpp
@@ -0,0 +1,194 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/Attributes.h"
+
+#ifndef _MSC_VER  // Not supported by clang-cl yet
+
+// When running with AddressSanitizer, we need to explicitly set some
+// options specific to our codebase to prevent errors during runtime.
+// To override these, set the ASAN_OPTIONS environment variable.
+//
+// Currently, these are:
+//
+//   allow_user_segv_handler=1 - Tell ASan to allow our code to use its
+//   own SIGSEGV handlers. This is required by ASM.js internally.
+//
+//   alloc_dealloc_mismatch=0 - Disable alloc-dealloc mismatch checking
+//   in ASan. This is required because we define our own new/delete
+//   operators that are backed by malloc/free. If one of them gets inlined
+//   while the other doesn't, ASan will report false positives.
+//
+//   detect_leaks=0 - Disable LeakSanitizer. This is required because
+//   otherwise leak checking will be enabled for various building and
+//   testing executables where we don't care much about leaks.
+//
+//   allocator_may_return_null=1 - Tell ASan to return NULL when an allocation
+//   fails instead of aborting the program. This allows us to handle failing
+//   allocations the same way we would handle them with a regular allocator and
+//   also uncovers potential bugs that might occur in these situations.
+//
+//   max_malloc_fill_size - Tell ASan to initialize memory to a certain value
+//   when it is allocated. This option specifies the maximum allocation size
+//   for which ASan should still initialize the memory. The value we specify
+//   here is exactly 256MiB.
+//
+//   max_free_fill_size - Similar to max_malloc_fill_size, tell ASan to
+//   overwrite memory with a certain value when it is freed. Again, the value
+//   here specifies the maximum allocation size, larger allocations will
+//   skipped.
+//
+//   malloc_fill_byte / free_fill_byte - These values specify the byte values
+//   used to initialize/overwrite memory in conjunction with the previous
+//   options max_malloc_fill_size and max_free_fill_size. The values used here
+//   are 0xe4 and 0xe5 to match the kAllocPoison and kAllocJunk constants used
+//   by mozjemalloc.
+//
+//   malloc_context_size - This value specifies how many stack frames are
+//   stored for each malloc and free call. Since Firefox can have lots of deep
+//   stacks with allocations, we limit the default size here further to save
+//   some memory.
+//
+//   fast_unwind_on_check - Use the fast (frame-pointer-based) stack unwinder
+//   for internal CHECK failures. The slow unwinder doesn't work on Android.
+//
+//   fast_unwind_on_fatal - Use the fast (frame-pointer-based) stack unwinder
+//   to print fatal error reports. The slow unwinder doesn't work on Android.
+//
+//   detect_stack_use_after_return=0 - Work around bug 1768099.
+//
+//   intercept_tls_get_addr=0 - Work around
+//   https://github.com/google/sanitizers/issues/1322 (bug 1635327).
+//
+// !! Note: __asan_default_options is not used on Android! (bug 1576213)
+// These should be updated in:
+//   mobile/android/geckoview/src/asan/resources/lib/*/wrap.sh
+//
+extern "C" MOZ_ASAN_BLACKLIST const char* __asan_default_options() {
+  return "allow_user_segv_handler=1:alloc_dealloc_mismatch=0:detect_leaks=0"
+#  ifdef MOZ_ASAN_REPORTER
+         ":malloc_context_size=20"
+#  endif
+#  ifdef __ANDROID__
+         ":fast_unwind_on_check=1:fast_unwind_on_fatal=1"
+#  endif
+         ":max_free_fill_size=268435456:max_malloc_fill_size=268435456"
+         ":malloc_fill_byte=228:free_fill_byte=229"
+         ":handle_sigill=1"
+         ":allocator_may_return_null=1"
+         ":detect_stack_use_after_return=0"
+         ":intercept_tls_get_addr=0";
+}
+
+// !!! Please do not add suppressions for new leaks in Gecko code, unless they
+// are intentional !!!
+extern "C" const char* __lsan_default_suppressions() {
+  return "# Add your suppressions below\n"
+
+         // LSan runs with a shallow stack depth and no debug symbols, so some
+         // small intentional leaks in system libraries show up with this.  You
+         // do not want this enabled when running locally with a deep stack, as
+         // it can catch too much.
+         "leak:libc.so\n"
+
+         // nsComponentManagerImpl intentionally leaks factory entries, and
+         // probably some other stuff.
+         "leak:nsComponentManagerImpl\n"
+
+         // Bug 981220 - Pixman fails to free TLS memory.
+         "leak:pixman_implementation_lookup_composite\n"
+
+         // Bug 987918 - Font shutdown leaks when CLEANUP_MEMORY is not enabled.
+         "leak:libfontconfig.so\n"
+         "leak:libfreetype.so\n"
+         "leak:GI___strdup\n"
+         // The symbol is really __GI___strdup, but if you have the leading _,
+         // it doesn't suppress it.
+
+         // Bug 1078015 - If the process terminates during a PR_Sleep, LSAN
+         // detects a leak
+         "leak:PR_Sleep\n"
+
+         // Bug 1363976 - Stylo holds some global data alive forever.
+         "leak:style::global_style_data\n"
+         "leak:style::sharing::SHARING_CACHE_KEY\n"
+         "leak:style::bloom::BLOOM_KEY\n"
+
+         //
+         // Many leaks only affect some test suites.  The suite annotations are
+         // not checked.
+         //
+
+         // Bug 979928 - WebRTC leaks in different mochitest suites.
+         "leak:NR_reg_init\n"
+         // nr_reg_local_init should be redundant with NR_reg_init, but on
+         // Aurora we get fewer stack frames for some reason.
+         "leak:nr_reg_local_init\n"
+         "leak:r_log_register\n"
+         "leak:nr_reg_set\n"
+
+         // This is a one-time leak in mochitest-bc, so it is probably okay to
+         // ignore.
+         "leak:GlobalPrinters::InitializeGlobalPrinters\n"
+         "leak:nsPSPrinterList::GetPrinterList\n"
+
+         // Bug 1028456 - Various NSPR fd-related leaks in different mochitest
+         // suites.
+         "leak:_PR_Getfd\n"
+
+         // Bug 1028483 - The XML parser sometimes leaks an object. Mostly
+         // happens in toolkit/components/thumbnails.
+         "leak:processInternalEntity\n"
+
+         // Bug 1187421 - NSS does not always free the error stack in different
+         // mochitest suites.
+         "leak:nss_ClearErrorStack\n"
+
+         // Bug 1602689 - leak at mozilla::NotNull, RacyRegisteredThread,
+         // RegisteredThread::RegisteredThread, mozilla::detail::UniqueSelector
+         "leak:RegisteredThread::RegisteredThread\n"
+
+         //
+         // Leaks with system libraries in their stacks. These show up across a
+         // number of tests. Better symbols and disabling fast stackwalking may
+         // help diagnose these.
+         //
+         "leak:libcairo.so\n"
+         // https://github.com/OpenPrinting/cups/pull/317
+         "leak:libcups.so\n"
+         "leak:libdl.so\n"
+         "leak:libdricore.so\n"
+         "leak:libdricore9.2.1.so\n"
+         "leak:libGL.so\n"
+         "leak:libEGL_mesa.so\n"
+         "leak:libglib-2.0.so\n"
+         "leak:libglsl.so\n"
+         "leak:libp11-kit.so\n"
+         "leak:libpixman-1.so\n"
+         "leak:libpulse.so\n"
+         // lubpulsecommon 1.1 is Ubuntu 12.04
+         "leak:libpulsecommon-1.1.so\n"
+         // lubpulsecommon 1.1 is Ubuntu 16.04
+         "leak:libpulsecommon-8.0.so\n"
+         "leak:libresolv.so\n"
+         "leak:libstdc++.so\n"
+         "leak:libXrandr.so\n"
+         "leak:libX11.so\n"
+         "leak:pthread_setspecific_internal\n"
+         "leak:swrast_dri.so\n"
+
+         "leak:js::frontend::BytecodeEmitter:\n"
+         "leak:js::frontend::GeneralParser\n"
+         "leak:js::frontend::Parse\n"
+         "leak:xpc::CIGSHelper\n"
+         "leak:mozJSModuleLoader\n"
+         "leak:mozilla::xpcom::ConstructJSMComponent\n"
+         "leak:XPCWrappedNativeJSOps\n"
+
+      // End of suppressions.
+      ;  // Please keep this semicolon.
+}
+
+#endif  // _MSC_VER