Optionally dump ART crash information to logcat when running on Android.
This logging feature does not use debuggerd. It is only
enabled when the environment variable ANDROID_ROOT is set
to something different than "/system".
Also, refactor runtime/runtime_android.cc and
runtime/runtime_linux.cc.
Test: Observe device logcat when dalvikvm crashes
Bug: 32466479
Change-Id: If59ce838fdb5b9bb6638b73fcd074b7065275c6c
diff --git a/runtime/runtime_linux.cc b/runtime/runtime_linux.cc
index b8894d2..ad61cf3 100644
--- a/runtime/runtime_linux.cc
+++ b/runtime/runtime_linux.cc
@@ -17,359 +17,19 @@
#include "runtime.h"
#include <signal.h>
-#include <string.h>
-#include <sys/utsname.h>
-#include <inttypes.h>
#include <iostream>
-#include <sstream>
-#include "android-base/stringprintf.h"
-
-#include "base/dumpable.h"
-#include "base/logging.h"
-#include "base/macros.h"
-#include "base/mutex.h"
-#include "native_stack_dump.h"
-#include "thread-inl.h"
-#include "thread_list.h"
-#include "utils.h"
+#include "runtime_common.h"
namespace art {
-using android::base::StringPrintf;
+void HandleUnexpectedSignalLinux(int signal_number, siginfo_t* info, void* raw_context) {
+ HandleUnexpectedSignalCommon(signal_number, info, raw_context, /* running_on_linux */ true);
-static constexpr bool kUseSigRTTimeout = true;
-static constexpr bool kDumpNativeStackOnTimeout = true;
-
-struct Backtrace {
- public:
- explicit Backtrace(void* raw_context) : raw_context_(raw_context) {}
- void Dump(std::ostream& os) const {
- DumpNativeStack(os, GetTid(), nullptr, "\t", nullptr, raw_context_);
- }
- private:
- // Stores the context of the signal that was unexpected and will terminate the runtime. The
- // DumpNativeStack code will take care of casting it to the expected type. This is required
- // as our signal handler runs on an alternate stack.
- void* raw_context_;
-};
-
-struct OsInfo {
- void Dump(std::ostream& os) const {
- utsname info;
- uname(&info);
- // Linux 2.6.38.8-gg784 (x86_64)
- // Darwin 11.4.0 (x86_64)
- os << info.sysname << " " << info.release << " (" << info.machine << ")";
- }
-};
-
-static const char* GetSignalName(int signal_number) {
- switch (signal_number) {
- case SIGABRT: return "SIGABRT";
- case SIGBUS: return "SIGBUS";
- case SIGFPE: return "SIGFPE";
- case SIGILL: return "SIGILL";
- case SIGPIPE: return "SIGPIPE";
- case SIGSEGV: return "SIGSEGV";
-#if defined(SIGSTKFLT)
- case SIGSTKFLT: return "SIGSTKFLT";
-#endif
- case SIGTRAP: return "SIGTRAP";
- }
- return "??";
-}
-
-static const char* GetSignalCodeName(int signal_number, int signal_code) {
- // Try the signal-specific codes...
- switch (signal_number) {
- case SIGILL:
- switch (signal_code) {
- case ILL_ILLOPC: return "ILL_ILLOPC";
- case ILL_ILLOPN: return "ILL_ILLOPN";
- case ILL_ILLADR: return "ILL_ILLADR";
- case ILL_ILLTRP: return "ILL_ILLTRP";
- case ILL_PRVOPC: return "ILL_PRVOPC";
- case ILL_PRVREG: return "ILL_PRVREG";
- case ILL_COPROC: return "ILL_COPROC";
- case ILL_BADSTK: return "ILL_BADSTK";
- }
- break;
- case SIGBUS:
- switch (signal_code) {
- case BUS_ADRALN: return "BUS_ADRALN";
- case BUS_ADRERR: return "BUS_ADRERR";
- case BUS_OBJERR: return "BUS_OBJERR";
- }
- break;
- case SIGFPE:
- switch (signal_code) {
- case FPE_INTDIV: return "FPE_INTDIV";
- case FPE_INTOVF: return "FPE_INTOVF";
- case FPE_FLTDIV: return "FPE_FLTDIV";
- case FPE_FLTOVF: return "FPE_FLTOVF";
- case FPE_FLTUND: return "FPE_FLTUND";
- case FPE_FLTRES: return "FPE_FLTRES";
- case FPE_FLTINV: return "FPE_FLTINV";
- case FPE_FLTSUB: return "FPE_FLTSUB";
- }
- break;
- case SIGSEGV:
- switch (signal_code) {
- case SEGV_MAPERR: return "SEGV_MAPERR";
- case SEGV_ACCERR: return "SEGV_ACCERR";
-#if defined(SEGV_BNDERR)
- case SEGV_BNDERR: return "SEGV_BNDERR";
-#endif
- }
- break;
- case SIGTRAP:
- switch (signal_code) {
- case TRAP_BRKPT: return "TRAP_BRKPT";
- case TRAP_TRACE: return "TRAP_TRACE";
- }
- break;
- }
- // Then the other codes...
- switch (signal_code) {
- case SI_USER: return "SI_USER";
-#if defined(SI_KERNEL)
- case SI_KERNEL: return "SI_KERNEL";
-#endif
- case SI_QUEUE: return "SI_QUEUE";
- case SI_TIMER: return "SI_TIMER";
- case SI_MESGQ: return "SI_MESGQ";
- case SI_ASYNCIO: return "SI_ASYNCIO";
-#if defined(SI_SIGIO)
- case SI_SIGIO: return "SI_SIGIO";
-#endif
-#if defined(SI_TKILL)
- case SI_TKILL: return "SI_TKILL";
-#endif
- }
- // Then give up...
- return "?";
-}
-
-struct UContext {
- explicit UContext(void* raw_context) :
- context(reinterpret_cast<ucontext_t*>(raw_context)->uc_mcontext) {
- }
-
- void Dump(std::ostream& os) const {
- // TODO: support non-x86 hosts (not urgent because this code doesn't run on targets).
-#if defined(__APPLE__) && defined(__i386__)
- DumpRegister32(os, "eax", context->__ss.__eax);
- DumpRegister32(os, "ebx", context->__ss.__ebx);
- DumpRegister32(os, "ecx", context->__ss.__ecx);
- DumpRegister32(os, "edx", context->__ss.__edx);
- os << '\n';
-
- DumpRegister32(os, "edi", context->__ss.__edi);
- DumpRegister32(os, "esi", context->__ss.__esi);
- DumpRegister32(os, "ebp", context->__ss.__ebp);
- DumpRegister32(os, "esp", context->__ss.__esp);
- os << '\n';
-
- DumpRegister32(os, "eip", context->__ss.__eip);
- os << " ";
- DumpRegister32(os, "eflags", context->__ss.__eflags);
- DumpX86Flags(os, context->__ss.__eflags);
- os << '\n';
-
- DumpRegister32(os, "cs", context->__ss.__cs);
- DumpRegister32(os, "ds", context->__ss.__ds);
- DumpRegister32(os, "es", context->__ss.__es);
- DumpRegister32(os, "fs", context->__ss.__fs);
- os << '\n';
- DumpRegister32(os, "gs", context->__ss.__gs);
- DumpRegister32(os, "ss", context->__ss.__ss);
-#elif defined(__linux__) && defined(__i386__)
- DumpRegister32(os, "eax", context.gregs[REG_EAX]);
- DumpRegister32(os, "ebx", context.gregs[REG_EBX]);
- DumpRegister32(os, "ecx", context.gregs[REG_ECX]);
- DumpRegister32(os, "edx", context.gregs[REG_EDX]);
- os << '\n';
-
- DumpRegister32(os, "edi", context.gregs[REG_EDI]);
- DumpRegister32(os, "esi", context.gregs[REG_ESI]);
- DumpRegister32(os, "ebp", context.gregs[REG_EBP]);
- DumpRegister32(os, "esp", context.gregs[REG_ESP]);
- os << '\n';
-
- DumpRegister32(os, "eip", context.gregs[REG_EIP]);
- os << " ";
- DumpRegister32(os, "eflags", context.gregs[REG_EFL]);
- DumpX86Flags(os, context.gregs[REG_EFL]);
- os << '\n';
-
- DumpRegister32(os, "cs", context.gregs[REG_CS]);
- DumpRegister32(os, "ds", context.gregs[REG_DS]);
- DumpRegister32(os, "es", context.gregs[REG_ES]);
- DumpRegister32(os, "fs", context.gregs[REG_FS]);
- os << '\n';
- DumpRegister32(os, "gs", context.gregs[REG_GS]);
- DumpRegister32(os, "ss", context.gregs[REG_SS]);
-#elif defined(__linux__) && defined(__x86_64__)
- DumpRegister64(os, "rax", context.gregs[REG_RAX]);
- DumpRegister64(os, "rbx", context.gregs[REG_RBX]);
- DumpRegister64(os, "rcx", context.gregs[REG_RCX]);
- DumpRegister64(os, "rdx", context.gregs[REG_RDX]);
- os << '\n';
-
- DumpRegister64(os, "rdi", context.gregs[REG_RDI]);
- DumpRegister64(os, "rsi", context.gregs[REG_RSI]);
- DumpRegister64(os, "rbp", context.gregs[REG_RBP]);
- DumpRegister64(os, "rsp", context.gregs[REG_RSP]);
- os << '\n';
-
- DumpRegister64(os, "r8 ", context.gregs[REG_R8]);
- DumpRegister64(os, "r9 ", context.gregs[REG_R9]);
- DumpRegister64(os, "r10", context.gregs[REG_R10]);
- DumpRegister64(os, "r11", context.gregs[REG_R11]);
- os << '\n';
-
- DumpRegister64(os, "r12", context.gregs[REG_R12]);
- DumpRegister64(os, "r13", context.gregs[REG_R13]);
- DumpRegister64(os, "r14", context.gregs[REG_R14]);
- DumpRegister64(os, "r15", context.gregs[REG_R15]);
- os << '\n';
-
- DumpRegister64(os, "rip", context.gregs[REG_RIP]);
- os << " ";
- DumpRegister32(os, "eflags", context.gregs[REG_EFL]);
- DumpX86Flags(os, context.gregs[REG_EFL]);
- os << '\n';
-
- DumpRegister32(os, "cs", (context.gregs[REG_CSGSFS]) & 0x0FFFF);
- DumpRegister32(os, "gs", (context.gregs[REG_CSGSFS] >> 16) & 0x0FFFF);
- DumpRegister32(os, "fs", (context.gregs[REG_CSGSFS] >> 32) & 0x0FFFF);
- os << '\n';
-#else
- os << "Unknown architecture/word size/OS in ucontext dump";
-#endif
- }
-
- void DumpRegister32(std::ostream& os, const char* name, uint32_t value) const {
- os << StringPrintf(" %6s: 0x%08x", name, value);
- }
-
- void DumpRegister64(std::ostream& os, const char* name, uint64_t value) const {
- os << StringPrintf(" %6s: 0x%016" PRIx64, name, value);
- }
-
- void DumpX86Flags(std::ostream& os, uint32_t flags) const {
- os << " [";
- if ((flags & (1 << 0)) != 0) {
- os << " CF";
- }
- if ((flags & (1 << 2)) != 0) {
- os << " PF";
- }
- if ((flags & (1 << 4)) != 0) {
- os << " AF";
- }
- if ((flags & (1 << 6)) != 0) {
- os << " ZF";
- }
- if ((flags & (1 << 7)) != 0) {
- os << " SF";
- }
- if ((flags & (1 << 8)) != 0) {
- os << " TF";
- }
- if ((flags & (1 << 9)) != 0) {
- os << " IF";
- }
- if ((flags & (1 << 10)) != 0) {
- os << " DF";
- }
- if ((flags & (1 << 11)) != 0) {
- os << " OF";
- }
- os << " ]";
- }
-
- mcontext_t& context;
-};
-
-// Return the signal number we recognize as timeout. -1 means not active/supported.
-static int GetTimeoutSignal() {
-#if defined(__APPLE__)
- // Mac does not support realtime signals.
- UNUSED(kUseSigRTTimeout);
- return -1;
-#else
- return kUseSigRTTimeout ? (SIGRTMIN + 2) : -1;
-#endif
-}
-
-static bool IsTimeoutSignal(int signal_number) {
- return signal_number == GetTimeoutSignal();
-}
-
-void HandleUnexpectedSignal(int signal_number, siginfo_t* info, void* raw_context) {
- static bool handlingUnexpectedSignal = false;
- if (handlingUnexpectedSignal) {
- LogHelper::LogLineLowStack(__FILE__,
- __LINE__,
- ::android::base::FATAL_WITHOUT_ABORT,
- "HandleUnexpectedSignal reentered\n");
- if (IsTimeoutSignal(signal_number)) {
- // Ignore a recursive timeout.
- return;
- }
- _exit(1);
- }
- handlingUnexpectedSignal = true;
-
- gAborting++; // set before taking any locks
- MutexLock mu(Thread::Current(), *Locks::unexpected_signal_lock_);
-
- bool has_address = (signal_number == SIGILL || signal_number == SIGBUS ||
- signal_number == SIGFPE || signal_number == SIGSEGV);
-
- OsInfo os_info;
- const char* cmd_line = GetCmdLine();
- if (cmd_line == nullptr) {
- cmd_line = "<unset>"; // Because no-one called InitLogging.
- }
- pid_t tid = GetTid();
- std::string thread_name(GetThreadName(tid));
- UContext thread_context(raw_context);
- Backtrace thread_backtrace(raw_context);
-
- // Note: We are using cerr directly instead of LOG macros to ensure even just partial output
- // makes it out. That means we lose the "dalvikvm..." prefix, but that is acceptable
- // considering this is an abort situation.
-
- std::cerr << "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n"
- << StringPrintf("Fatal signal %d (%s), code %d (%s)",
- signal_number, GetSignalName(signal_number),
- info->si_code,
- GetSignalCodeName(signal_number, info->si_code))
- << (has_address ? StringPrintf(" fault addr %p", info->si_addr) : "") << std::endl
- << "OS: " << Dumpable<OsInfo>(os_info) << std::endl
- << "Cmdline: " << cmd_line << std::endl
- << "Thread: " << tid << " \"" << thread_name << "\"" << std::endl
- << "Registers:\n" << Dumpable<UContext>(thread_context) << std::endl
- << "Backtrace:\n" << Dumpable<Backtrace>(thread_backtrace) << std::endl;
- if (kIsDebugBuild && signal_number == SIGSEGV) {
- PrintFileToLog("/proc/self/maps", LogSeverity::FATAL_WITHOUT_ABORT);
- }
- Runtime* runtime = Runtime::Current();
- if (runtime != nullptr) {
- if (IsTimeoutSignal(signal_number)) {
- // Special timeout signal. Try to dump all threads.
- // Note: Do not use DumpForSigQuit, as that might disable native unwind, but the native parts
- // are of value here.
- runtime->GetThreadList()->Dump(std::cerr, kDumpNativeStackOnTimeout);
- std::cerr << std::endl;
- }
- std::cerr << "Fault message: " << runtime->GetFaultMessage() << std::endl;
- }
if (getenv("debug_db_uid") != nullptr || getenv("art_wait_for_gdb_on_crash") != nullptr) {
+ pid_t tid = GetTid();
+ std::string thread_name(GetThreadName(tid));
std::cerr << "********************************************************\n"
<< "* Process " << getpid() << " thread " << tid << " \"" << thread_name
<< "\""
@@ -398,31 +58,9 @@
void Runtime::InitPlatformSignalHandlers() {
// On the host, we don't have debuggerd to dump a stack for us when something unexpected happens.
- struct sigaction action;
- memset(&action, 0, sizeof(action));
- sigemptyset(&action.sa_mask);
- action.sa_sigaction = HandleUnexpectedSignal;
- // Use the three-argument sa_sigaction handler.
- action.sa_flags |= SA_SIGINFO;
- // Use the alternate signal stack so we can catch stack overflows.
- action.sa_flags |= SA_ONSTACK;
-
- int rc = 0;
- rc += sigaction(SIGABRT, &action, nullptr);
- rc += sigaction(SIGBUS, &action, nullptr);
- rc += sigaction(SIGFPE, &action, nullptr);
- rc += sigaction(SIGILL, &action, nullptr);
- rc += sigaction(SIGPIPE, &action, nullptr);
- rc += sigaction(SIGSEGV, &action, nullptr);
-#if defined(SIGSTKFLT)
- rc += sigaction(SIGSTKFLT, &action, nullptr);
-#endif
- rc += sigaction(SIGTRAP, &action, nullptr);
- // Special dump-all timeout.
- if (GetTimeoutSignal() != -1) {
- rc += sigaction(GetTimeoutSignal(), &action, nullptr);
- }
- CHECK_EQ(rc, 0);
+ InitPlatformSignalHandlersCommon(HandleUnexpectedSignalLinux,
+ nullptr,
+ /* handle_timeout_signal */ true);
}
} // namespace art