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fix: enable wasm trap handlers in all Node.js processes (#48837)

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* fix: enable wasm trap handlers in all Node.js processes

Co-authored-by: deepak1556 <hop2deep@gmail.com>

* fix: separate registrations to account for featurelist init

Co-authored-by: deepak1556 <hop2deep@gmail.com>

* build: add missing header for SetStackDumpFirstChanceCallback

* fix: pdf spec

delay load pdfjs-dist which compiles wasm on load, trap handlers
will be initialized once the user script starts but before app#ready.

---------

Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: deepak1556 <hop2deep@gmail.com>
This commit is contained in:
trop[bot] 2025-11-11 18:45:57 +09:00 • committed by GitHub
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6 changed files with 76 additions and 50 deletions
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55
shell/common/v8_util.cc
View file

@ -8,6 +8,7 @@
#include <utility>
#include <vector>
#include "base/base_switches.h"
#include "base/memory/raw_ptr.h"
#include "gin/converter.h"
#include "shell/common/api/electron_api_native_image.h"
@ -17,6 +18,15 @@
#include "ui/gfx/image/image_skia.h"
#include "v8/include/v8.h"
#if BUILDFLAG(IS_LINUX) && (defined(ARCH_CPU_X86_64) || defined(ARCH_CPU_ARM64))
#define ENABLE_WEB_ASSEMBLY_TRAP_HANDLER_LINUX
#include "base/command_line.h"
#include "base/debug/stack_trace.h"
#include "components/crash/core/app/crashpad.h" // nogncheck
#include "content/public/common/content_switches.h"
#include "v8/include/v8-wasm-trap-handler-posix.h"
#endif
namespace electron {
namespace {
@ -240,6 +250,51 @@ v8::Local<v8::Value> DeserializeV8Value(v8::Isolate* isolate,
return V8Deserializer(isolate, data).Deserialize();
}
void SetUpWebAssemblyTrapHandler() {
#if BUILDFLAG(IS_WIN)
// On Windows we use the default trap handler provided by V8.
v8::V8::EnableWebAssemblyTrapHandler(true);
#elif BUILDFLAG(IS_MAC)
// On macOS, Crashpad uses exception ports to handle signals in a
// different process. As we cannot just pass a callback to this other
// process, we ask V8 to install its own signal handler to deal with
// WebAssembly traps.
v8::V8::EnableWebAssemblyTrapHandler(true);
#elif defined(ENABLE_WEB_ASSEMBLY_TRAP_HANDLER_LINUX)
const bool crash_reporter_enabled =
crash_reporter::GetHandlerSocket(nullptr, nullptr);
if (crash_reporter_enabled) {
// If either --enable-crash-reporter or --enable-crash-reporter-for-testing
// is enabled it should take care of signal handling for us, use the default
// implementation which doesn't register an additional handler.
v8::V8::EnableWebAssemblyTrapHandler(false);
return;
}
const bool use_v8_default_handler =
base::CommandLine::ForCurrentProcess()->HasSwitch(
::switches::kDisableInProcessStackTraces);
if (use_v8_default_handler) {
// There is no signal handler yet, but it's okay if v8 registers one.
v8::V8::EnableWebAssemblyTrapHandler(/*use_v8_signal_handler=*/true);
return;
}
if (base::debug::SetStackDumpFirstChanceCallback(
v8::TryHandleWebAssemblyTrapPosix)) {
// Crashpad and Breakpad are disabled, but the in-process stack dump
// handlers are enabled, so set the callback on the stack dump handlers.
v8::V8::EnableWebAssemblyTrapHandler(/*use_v8_signal_handler=*/false);
return;
}
// As the registration of the callback failed, we don't enable trap
// handlers.
#endif
}
namespace util {
/**