vmError.cpp revision 9149:a8a8604f890f
1/* 2 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#include <fcntl.h> 26#include "precompiled.hpp" 27#include "code/codeCache.hpp" 28#include "compiler/compileBroker.hpp" 29#include "compiler/disassembler.hpp" 30#include "gc/shared/collectedHeap.hpp" 31#include "prims/whitebox.hpp" 32#include "runtime/arguments.hpp" 33#include "runtime/atomic.inline.hpp" 34#include "runtime/frame.inline.hpp" 35#include "runtime/init.hpp" 36#include "runtime/os.hpp" 37#include "runtime/thread.inline.hpp" 38#include "runtime/vmThread.hpp" 39#include "runtime/vm_operations.hpp" 40#include "services/memTracker.hpp" 41#include "utilities/debug.hpp" 42#include "utilities/decoder.hpp" 43#include "utilities/defaultStream.hpp" 44#include "utilities/errorReporter.hpp" 45#include "utilities/events.hpp" 46#include "utilities/top.hpp" 47#include "utilities/vmError.hpp" 48 49// List of environment variables that should be reported in error log file. 50const char *env_list[] = { 51 // All platforms 52 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH", 53 "JAVA_COMPILER", "PATH", "USERNAME", 54 55 // Env variables that are defined on Solaris/Linux/BSD 56 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY", 57 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE", 58 59 // defined on Linux 60 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM", 61 62 // defined on Darwin 63 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH", 64 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH", 65 "DYLD_INSERT_LIBRARIES", 66 67 // defined on Windows 68 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR", 69 70 (const char *)0 71}; 72 73// A simple parser for -XX:OnError, usage: 74// ptr = OnError; 75// while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL) 76// ... ... 77static char* next_OnError_command(char* buf, int buflen, const char** ptr) { 78 if (ptr == NULL || *ptr == NULL) return NULL; 79 80 const char* cmd = *ptr; 81 82 // skip leading blanks or ';' 83 while (*cmd == ' ' || *cmd == ';') cmd++; 84 85 if (*cmd == '\0') return NULL; 86 87 const char * cmdend = cmd; 88 while (*cmdend != '\0' && *cmdend != ';') cmdend++; 89 90 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen); 91 92 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1); 93 return buf; 94} 95 96static void print_bug_submit_message(outputStream *out, Thread *thread) { 97 if (out == NULL) return; 98 out->print_raw_cr("# If you would like to submit a bug report, please visit:"); 99 out->print_raw ("# "); 100 out->print_raw_cr(Arguments::java_vendor_url_bug()); 101 // If the crash is in native code, encourage user to submit a bug to the 102 // provider of that code. 103 if (thread && thread->is_Java_thread() && 104 !thread->is_hidden_from_external_view()) { 105 JavaThread* jt = (JavaThread*)thread; 106 if (jt->thread_state() == _thread_in_native) { 107 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug."); 108 } 109 } 110 out->print_raw_cr("#"); 111} 112 113bool VMError::coredump_status; 114char VMError::coredump_message[O_BUFLEN]; 115 116void VMError::record_coredump_status(const char* message, bool status) { 117 coredump_status = status; 118 strncpy(coredump_message, message, sizeof(coredump_message)); 119 coredump_message[sizeof(coredump_message)-1] = 0; 120} 121 122// Return a string to describe the error 123char* VMError::error_string(char* buf, int buflen) { 124 char signame_buf[64]; 125 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf)); 126 127 if (signame) { 128 jio_snprintf(buf, buflen, 129 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT, 130 signame, _id, _pc, 131 os::current_process_id(), os::current_thread_id()); 132 } else if (_filename != NULL && _lineno > 0) { 133 // skip directory names 134 char separator = os::file_separator()[0]; 135 const char *p = strrchr(_filename, separator); 136 int n = jio_snprintf(buf, buflen, 137 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT, 138 p ? p + 1 : _filename, _lineno, 139 os::current_process_id(), os::current_thread_id()); 140 if (n >= 0 && n < buflen && _message) { 141 if (strlen(_detail_msg) > 0) { 142 jio_snprintf(buf + n, buflen - n, "%s%s: %s", 143 os::line_separator(), _message, _detail_msg); 144 } else { 145 jio_snprintf(buf + n, buflen - n, "%sError: %s", 146 os::line_separator(), _message); 147 } 148 } 149 } else { 150 jio_snprintf(buf, buflen, 151 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT, 152 _id, os::current_process_id(), os::current_thread_id()); 153 } 154 155 return buf; 156} 157 158void VMError::print_stack_trace(outputStream* st, JavaThread* jt, 159 char* buf, int buflen, bool verbose) { 160#ifdef ZERO 161 if (jt->zero_stack()->sp() && jt->top_zero_frame()) { 162 // StackFrameStream uses the frame anchor, which may not have 163 // been set up. This can be done at any time in Zero, however, 164 // so if it hasn't been set up then we just set it up now and 165 // clear it again when we're done. 166 bool has_last_Java_frame = jt->has_last_Java_frame(); 167 if (!has_last_Java_frame) 168 jt->set_last_Java_frame(); 169 st->print("Java frames:"); 170 171 // If the top frame is a Shark frame and the frame anchor isn't 172 // set up then it's possible that the information in the frame 173 // is garbage: it could be from a previous decache, or it could 174 // simply have never been written. So we print a warning... 175 StackFrameStream sfs(jt); 176 if (!has_last_Java_frame && !sfs.is_done()) { 177 if (sfs.current()->zeroframe()->is_shark_frame()) { 178 st->print(" (TOP FRAME MAY BE JUNK)"); 179 } 180 } 181 st->cr(); 182 183 // Print the frames 184 for(int i = 0; !sfs.is_done(); sfs.next(), i++) { 185 sfs.current()->zero_print_on_error(i, st, buf, buflen); 186 st->cr(); 187 } 188 189 // Reset the frame anchor if necessary 190 if (!has_last_Java_frame) 191 jt->reset_last_Java_frame(); 192 } 193#else 194 if (jt->has_last_Java_frame()) { 195 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)"); 196 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) { 197 sfs.current()->print_on_error(st, buf, buflen, verbose); 198 st->cr(); 199 } 200 } 201#endif // ZERO 202} 203 204void VMError::print_oom_reasons(outputStream* st) { 205 st->print_cr("# Possible reasons:"); 206 st->print_cr("# The system is out of physical RAM or swap space"); 207 st->print_cr("# In 32 bit mode, the process size limit was hit"); 208 st->print_cr("# Possible solutions:"); 209 st->print_cr("# Reduce memory load on the system"); 210 st->print_cr("# Increase physical memory or swap space"); 211 st->print_cr("# Check if swap backing store is full"); 212 st->print_cr("# Use 64 bit Java on a 64 bit OS"); 213 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)"); 214 st->print_cr("# Decrease number of Java threads"); 215 st->print_cr("# Decrease Java thread stack sizes (-Xss)"); 216 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize="); 217 st->print_cr("# This output file may be truncated or incomplete."); 218} 219 220const char* VMError::gc_mode() { 221 if (UseG1GC) return "g1 gc"; 222 if (UseParallelGC) return "parallel gc"; 223 if (UseConcMarkSweepGC) return "concurrent mark sweep gc"; 224 if (UseSerialGC) return "serial gc"; 225 return "ERROR in GC mode"; 226} 227 228// This is the main function to report a fatal error. Only one thread can 229// call this function, so we don't need to worry about MT-safety. But it's 230// possible that the error handler itself may crash or die on an internal 231// error, for example, when the stack/heap is badly damaged. We must be 232// able to handle recursive errors that happen inside error handler. 233// 234// Error reporting is done in several steps. If a crash or internal error 235// occurred when reporting an error, the nested signal/exception handler 236// can skip steps that are already (or partially) done. Error reporting will 237// continue from the next step. This allows us to retrieve and print 238// information that may be unsafe to get after a fatal error. If it happens, 239// you may find nested report_and_die() frames when you look at the stack 240// in a debugger. 241// 242// In general, a hang in error handler is much worse than a crash or internal 243// error, as it's harder to recover from a hang. Deadlock can happen if we 244// try to grab a lock that is already owned by current thread, or if the 245// owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the 246// error handler and all the functions it called should avoid grabbing any 247// lock. An important thing to notice is that memory allocation needs a lock. 248// 249// We should avoid using large stack allocated buffers. Many errors happen 250// when stack space is already low. Making things even worse is that there 251// could be nested report_and_die() calls on stack (see above). Only one 252// thread can report error, so large buffers are statically allocated in data 253// segment. 254 255int VMError::_current_step; 256const char* VMError::_current_step_info; 257 258void VMError::report(outputStream* st, bool _verbose) { 259 260# define BEGIN if (_current_step == 0) { _current_step = 1; 261# define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s; 262# define END } 263 264 // don't allocate large buffer on stack 265 static char buf[O_BUFLEN]; 266 267 BEGIN 268 269 STEP(10, "(printing fatal error message)") 270 271 st->print_cr("#"); 272 if (should_report_bug(_id)) { 273 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:"); 274 } else { 275 st->print_cr("# There is insufficient memory for the Java " 276 "Runtime Environment to continue."); 277 } 278 279#ifndef PRODUCT 280 // Error handler self tests 281 282 // test secondary error handling. Test it twice, to test that resetting 283 // error handler after a secondary crash works. 284 STEP(20, "(test secondary crash 1)") 285 if (_verbose && TestCrashInErrorHandler != 0) { 286 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...", 287 TestCrashInErrorHandler); 288 controlled_crash(TestCrashInErrorHandler); 289 } 290 291 STEP(30, "(test secondary crash 2)") 292 if (_verbose && TestCrashInErrorHandler != 0) { 293 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...", 294 TestCrashInErrorHandler); 295 controlled_crash(TestCrashInErrorHandler); 296 } 297 298 STEP(40, "(test safefetch in error handler)") 299 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice 300 // to test that resetting the signal handler works correctly. 301 if (_verbose && TestSafeFetchInErrorHandler) { 302 st->print_cr("Will test SafeFetch..."); 303 if (CanUseSafeFetch32()) { 304 int* const invalid_pointer = (int*) get_segfault_address(); 305 const int x = 0x76543210; 306 int i1 = SafeFetch32(invalid_pointer, x); 307 int i2 = SafeFetch32(invalid_pointer, x); 308 if (i1 == x && i2 == x) { 309 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern 310 } else { 311 st->print_cr("??"); 312 } 313 } else { 314 st->print_cr("not possible; skipped."); 315 } 316 } 317#endif // PRODUCT 318 319 STEP(50, "(printing type of error)") 320 321 switch(_id) { 322 case OOM_MALLOC_ERROR: 323 case OOM_MMAP_ERROR: 324 if (_size) { 325 st->print("# Native memory allocation "); 326 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " : 327 "(mmap) failed to map "); 328 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size); 329 st->print("%s", buf); 330 st->print(" bytes"); 331 if (strlen(_detail_msg) > 0) { 332 st->print(" for "); 333 st->print("%s", _detail_msg); 334 } 335 st->cr(); 336 } else { 337 if (strlen(_detail_msg) > 0) { 338 st->print("# "); 339 st->print_cr("%s", _detail_msg); 340 } 341 } 342 // In error file give some solutions 343 if (_verbose) { 344 print_oom_reasons(st); 345 } else { 346 return; // that's enough for the screen 347 } 348 break; 349 case INTERNAL_ERROR: 350 default: 351 break; 352 } 353 354 STEP(60, "(printing exception/signal name)") 355 356 st->print_cr("#"); 357 st->print("# "); 358 // Is it an OS exception/signal? 359 if (os::exception_name(_id, buf, sizeof(buf))) { 360 st->print("%s", buf); 361 st->print(" (0x%x)", _id); // signal number 362 st->print(" at pc=" PTR_FORMAT, p2i(_pc)); 363 } else { 364 if (should_report_bug(_id)) { 365 st->print("Internal Error"); 366 } else { 367 st->print("Out of Memory Error"); 368 } 369 if (_filename != NULL && _lineno > 0) { 370#ifdef PRODUCT 371 // In product mode chop off pathname? 372 char separator = os::file_separator()[0]; 373 const char *p = strrchr(_filename, separator); 374 const char *file = p ? p+1 : _filename; 375#else 376 const char *file = _filename; 377#endif 378 st->print(" (%s:%d)", file, _lineno); 379 } else { 380 st->print(" (0x%x)", _id); 381 } 382 } 383 384 STEP(70, "(printing current thread and pid)") 385 386 // process id, thread id 387 st->print(", pid=%d", os::current_process_id()); 388 st->print(", tid=" UINTX_FORMAT, os::current_thread_id()); 389 st->cr(); 390 391 STEP(80, "(printing error message)") 392 393 if (should_report_bug(_id)) { // already printed the message. 394 // error message 395 if (strlen(_detail_msg) > 0) { 396 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg); 397 } else if (_message) { 398 st->print_cr("# Error: %s", _message); 399 } 400 } 401 402 STEP(90, "(printing Java version string)") 403 404 // VM version 405 st->print_cr("#"); 406 JDK_Version::current().to_string(buf, sizeof(buf)); 407 const char* runtime_name = JDK_Version::runtime_name() != NULL ? 408 JDK_Version::runtime_name() : ""; 409 const char* runtime_version = JDK_Version::runtime_version() != NULL ? 410 JDK_Version::runtime_version() : ""; 411 st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version); 412 // This is the long version with some default settings added 413 st->print_cr("# Java VM: %s (%s, %s%s%s%s%s, %s, %s)", 414 Abstract_VM_Version::vm_name(), 415 Abstract_VM_Version::vm_release(), 416 Abstract_VM_Version::vm_info_string(), 417 TieredCompilation ? ", tiered" : "", 418#if INCLUDE_JVMCI 419 EnableJVMCI ? ", jvmci" : "", 420 UseJVMCICompiler ? ", jvmci compiler" : "", 421#else 422 "", "", 423#endif 424 UseCompressedOops ? ", compressed oops" : "", 425 gc_mode(), 426 Abstract_VM_Version::vm_platform_string() 427 ); 428 429 STEP(100, "(printing problematic frame)") 430 431 // Print current frame if we have a context (i.e. it's a crash) 432 if (_context) { 433 st->print_cr("# Problematic frame:"); 434 st->print("# "); 435 frame fr = os::fetch_frame_from_context(_context); 436 fr.print_on_error(st, buf, sizeof(buf)); 437 st->cr(); 438 st->print_cr("#"); 439 } 440 441 STEP(110, "(printing core file information)") 442 st->print("# "); 443 if (CreateCoredumpOnCrash) { 444 if (coredump_status) { 445 st->print("Core dump will be written. Default location: %s", coredump_message); 446 } else { 447 st->print("No core dump will be written. %s", coredump_message); 448 } 449 } else { 450 st->print("CreateCoredumpOnCrash turned off, no core file dumped"); 451 } 452 st->cr(); 453 st->print_cr("#"); 454 455 STEP(120, "(printing bug submit message)") 456 457 if (should_report_bug(_id) && _verbose) { 458 print_bug_submit_message(st, _thread); 459 } 460 461 STEP(130, "(printing summary)" ) 462 463 if (_verbose) { 464 st->cr(); 465 st->print_cr("--------------- S U M M A R Y ------------"); 466 st->cr(); 467 } 468 469 STEP(140, "(printing VM option summary)" ) 470 471 if (_verbose) { 472 // VM options 473 Arguments::print_summary_on(st); 474 st->cr(); 475 } 476 477 STEP(150, "(printing summary machine and OS info)") 478 479 if (_verbose) { 480 os::print_summary_info(st, buf, sizeof(buf)); 481 } 482 483 484 STEP(160, "(printing date and time)" ) 485 486 if (_verbose) { 487 os::print_date_and_time(st, buf, sizeof(buf)); 488 } 489 490 STEP(170, "(printing thread)" ) 491 492 if (_verbose) { 493 st->cr(); 494 st->print_cr("--------------- T H R E A D ---------------"); 495 st->cr(); 496 } 497 498 STEP(180, "(printing current thread)" ) 499 500 // current thread 501 if (_verbose) { 502 if (_thread) { 503 st->print("Current thread (" PTR_FORMAT "): ", p2i(_thread)); 504 _thread->print_on_error(st, buf, sizeof(buf)); 505 st->cr(); 506 } else { 507 st->print_cr("Current thread is native thread"); 508 } 509 st->cr(); 510 } 511 512 STEP(190, "(printing current compile task)" ) 513 514 if (_verbose && _thread && _thread->is_Compiler_thread()) { 515 CompilerThread* t = (CompilerThread*)_thread; 516 if (t->task()) { 517 st->cr(); 518 st->print_cr("Current CompileTask:"); 519 t->task()->print_line_on_error(st, buf, sizeof(buf)); 520 st->cr(); 521 } 522 } 523 524 525 STEP(200, "(printing stack bounds)" ) 526 527 if (_verbose) { 528 st->print("Stack: "); 529 530 address stack_top; 531 size_t stack_size; 532 533 if (_thread) { 534 stack_top = _thread->stack_base(); 535 stack_size = _thread->stack_size(); 536 } else { 537 stack_top = os::current_stack_base(); 538 stack_size = os::current_stack_size(); 539 } 540 541 address stack_bottom = stack_top - stack_size; 542 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", p2i(stack_bottom), p2i(stack_top)); 543 544 frame fr = _context ? os::fetch_frame_from_context(_context) 545 : os::current_frame(); 546 547 if (fr.sp()) { 548 st->print(", sp=" PTR_FORMAT, p2i(fr.sp())); 549 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024); 550 st->print(", free space=" SIZE_FORMAT "k", free_stack_size); 551 } 552 553 st->cr(); 554 } 555 556 STEP(210, "(printing native stack)" ) 557 558 if (_verbose) { 559 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) { 560 // We have printed the native stack in platform-specific code 561 // Windows/x64 needs special handling. 562 } else { 563 frame fr = _context ? os::fetch_frame_from_context(_context) 564 : os::current_frame(); 565 566 print_native_stack(st, fr, _thread, buf, sizeof(buf)); 567 } 568 } 569 570 STEP(220, "(printing Java stack)" ) 571 572 if (_verbose && _thread && _thread->is_Java_thread()) { 573 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf)); 574 } 575 576 STEP(230, "(printing target Java thread stack)" ) 577 578 // printing Java thread stack trace if it is involved in GC crash 579 if (_verbose && _thread && (_thread->is_Named_thread())) { 580 JavaThread* jt = ((NamedThread *)_thread)->processed_thread(); 581 if (jt != NULL) { 582 st->print_cr("JavaThread " PTR_FORMAT " (nid = %d) was being processed", p2i(jt), jt->osthread()->thread_id()); 583 print_stack_trace(st, jt, buf, sizeof(buf), true); 584 } 585 } 586 587 STEP(240, "(printing siginfo)" ) 588 589 // signal no, signal code, address that caused the fault 590 if (_verbose && _siginfo) { 591 st->cr(); 592 os::print_siginfo(st, _siginfo); 593 st->cr(); 594 } 595 596 STEP(250, "(printing register info)") 597 598 // decode register contents if possible 599 if (_verbose && _context && Universe::is_fully_initialized()) { 600 os::print_register_info(st, _context); 601 st->cr(); 602 } 603 604 STEP(260, "(printing registers, top of stack, instructions near pc)") 605 606 // registers, top of stack, instructions near pc 607 if (_verbose && _context) { 608 os::print_context(st, _context); 609 st->cr(); 610 } 611 612 STEP(265, "(printing code blob if possible)") 613 614 if (_verbose && _context) { 615 CodeBlob* cb = CodeCache::find_blob(_pc); 616 if (cb != NULL) { 617 if (Interpreter::contains(_pc)) { 618 // The interpreter CodeBlob is very large so try to print the codelet instead. 619 InterpreterCodelet* codelet = Interpreter::codelet_containing(_pc); 620 if (codelet != NULL) { 621 codelet->print_on(st); 622 Disassembler::decode(codelet->code_begin(), codelet->code_end(), st); 623 } 624 } else { 625 StubCodeDesc* desc = StubCodeDesc::desc_for(_pc); 626 if (desc != NULL) { 627 desc->print_on(st); 628 Disassembler::decode(desc->begin(), desc->end(), st); 629 } else { 630 Disassembler::decode(cb, st); 631 st->cr(); 632 } 633 } 634 } 635 } 636 637 STEP(270, "(printing VM operation)" ) 638 639 if (_verbose && _thread && _thread->is_VM_thread()) { 640 VMThread* t = (VMThread*)_thread; 641 VM_Operation* op = t->vm_operation(); 642 if (op) { 643 op->print_on_error(st); 644 st->cr(); 645 st->cr(); 646 } 647 } 648 649 STEP(280, "(printing process)" ) 650 651 if (_verbose) { 652 st->cr(); 653 st->print_cr("--------------- P R O C E S S ---------------"); 654 st->cr(); 655 } 656 657 STEP(290, "(printing all threads)" ) 658 659 // all threads 660 if (_verbose && _thread) { 661 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 662 st->cr(); 663 } 664 665 STEP(300, "(printing VM state)" ) 666 667 if (_verbose) { 668 // Safepoint state 669 st->print("VM state:"); 670 671 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 672 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 673 else st->print("not at safepoint"); 674 675 // Also see if error occurred during initialization or shutdown 676 if (!Universe::is_fully_initialized()) { 677 st->print(" (not fully initialized)"); 678 } else if (VM_Exit::vm_exited()) { 679 st->print(" (shutting down)"); 680 } else { 681 st->print(" (normal execution)"); 682 } 683 st->cr(); 684 st->cr(); 685 } 686 687 STEP(310, "(printing owned locks on error)" ) 688 689 // mutexes/monitors that currently have an owner 690 if (_verbose) { 691 print_owned_locks_on_error(st); 692 st->cr(); 693 } 694 695 STEP(320, "(printing number of OutOfMemoryError and StackOverflow exceptions)") 696 697 if (_verbose && Exceptions::has_exception_counts()) { 698 st->print_cr("OutOfMemory and StackOverflow Exception counts:"); 699 Exceptions::print_exception_counts_on_error(st); 700 st->cr(); 701 } 702 703 STEP(330, "(printing compressed oops mode") 704 705 if (_verbose && UseCompressedOops) { 706 Universe::print_compressed_oops_mode(st); 707 if (UseCompressedClassPointers) { 708 Metaspace::print_compressed_class_space(st); 709 } 710 st->cr(); 711 } 712 713 STEP(340, "(printing heap information)" ) 714 715 if (_verbose && Universe::is_fully_initialized()) { 716 Universe::heap()->print_on_error(st); 717 st->cr(); 718 719 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page())); 720 st->cr(); 721 } 722 723 STEP(350, "(printing code cache information)" ) 724 725 if (_verbose && Universe::is_fully_initialized()) { 726 // print code cache information before vm abort 727 CodeCache::print_summary(st); 728 st->cr(); 729 } 730 731 STEP(360, "(printing ring buffers)" ) 732 733 if (_verbose) { 734 Events::print_all(st); 735 st->cr(); 736 } 737 738 STEP(370, "(printing dynamic libraries)" ) 739 740 if (_verbose) { 741 // dynamic libraries, or memory map 742 os::print_dll_info(st); 743 st->cr(); 744 } 745 746 STEP(380, "(printing VM options)" ) 747 748 if (_verbose) { 749 // VM options 750 Arguments::print_on(st); 751 st->cr(); 752 } 753 754 STEP(390, "(printing warning if internal testing API used)" ) 755 756 if (WhiteBox::used()) { 757 st->print_cr("Unsupported internal testing APIs have been used."); 758 st->cr(); 759 } 760 761 STEP(400, "(printing all environment variables)" ) 762 763 if (_verbose) { 764 os::print_environment_variables(st, env_list); 765 st->cr(); 766 } 767 768 STEP(410, "(printing signal handlers)" ) 769 770 if (_verbose) { 771 os::print_signal_handlers(st, buf, sizeof(buf)); 772 st->cr(); 773 } 774 775 STEP(420, "(Native Memory Tracking)" ) 776 if (_verbose) { 777 MemTracker::error_report(st); 778 } 779 780 STEP(430, "(printing system)" ) 781 782 if (_verbose) { 783 st->cr(); 784 st->print_cr("--------------- S Y S T E M ---------------"); 785 st->cr(); 786 } 787 788 STEP(440, "(printing OS information)" ) 789 790 if (_verbose) { 791 os::print_os_info(st); 792 st->cr(); 793 } 794 795 STEP(450, "(printing CPU info)" ) 796 if (_verbose) { 797 os::print_cpu_info(st, buf, sizeof(buf)); 798 st->cr(); 799 } 800 801 STEP(460, "(printing memory info)" ) 802 803 if (_verbose) { 804 os::print_memory_info(st); 805 st->cr(); 806 } 807 808 STEP(470, "(printing internal vm info)" ) 809 810 if (_verbose) { 811 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 812 st->cr(); 813 } 814 815 // print a defined marker to show that error handling finished correctly. 816 STEP(480, "(printing end marker)" ) 817 818 if (_verbose) { 819 st->print_cr("END."); 820 } 821 822 END 823 824# undef BEGIN 825# undef STEP 826# undef END 827} 828 829volatile intptr_t VMError::first_error_tid = -1; 830 831// An error could happen before tty is initialized or after it has been 832// destroyed. Here we use a very simple unbuffered fdStream for printing. 833// Only out.print_raw() and out.print_raw_cr() should be used, as other 834// printing methods need to allocate large buffer on stack. To format a 835// string, use jio_snprintf() with a static buffer or use staticBufferStream. 836fdStream VMError::out(defaultStream::output_fd()); 837fdStream VMError::log; // error log used by VMError::report_and_die() 838 839/** Expand a pattern into a buffer starting at pos and open a file using constructed path */ 840static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) { 841 int fd = -1; 842 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) { 843 // the O_EXCL flag will cause the open to fail if the file exists 844 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666); 845 } 846 return fd; 847} 848 849/** 850 * Construct file name for a log file and return it's file descriptor. 851 * Name and location depends on pattern, default_pattern params and access 852 * permissions. 853 */ 854static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) { 855 int fd = -1; 856 857 // If possible, use specified pattern to construct log file name 858 if (pattern != NULL) { 859 fd = expand_and_open(pattern, buf, buflen, 0); 860 } 861 862 // Either user didn't specify, or the user's location failed, 863 // so use the default name in the current directory 864 if (fd == -1) { 865 const char* cwd = os::get_current_directory(buf, buflen); 866 if (cwd != NULL) { 867 size_t pos = strlen(cwd); 868 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator()); 869 pos += fsep_len; 870 if (fsep_len > 0) { 871 fd = expand_and_open(default_pattern, buf, buflen, pos); 872 } 873 } 874 } 875 876 // try temp directory if it exists. 877 if (fd == -1) { 878 const char* tmpdir = os::get_temp_directory(); 879 if (tmpdir != NULL && strlen(tmpdir) > 0) { 880 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator()); 881 if (pos > 0) { 882 fd = expand_and_open(default_pattern, buf, buflen, pos); 883 } 884 } 885 } 886 887 return fd; 888} 889 890int VMError::_id; 891const char* VMError::_message; 892char VMError::_detail_msg[1024]; 893Thread* VMError::_thread; 894address VMError::_pc; 895void* VMError::_siginfo; 896void* VMError::_context; 897const char* VMError::_filename; 898int VMError::_lineno; 899size_t VMError::_size; 900 901void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, 902 void* context, const char* detail_fmt, ...) 903{ 904 va_list detail_args; 905 va_start(detail_args, detail_fmt); 906 report_and_die(sig, NULL, detail_fmt, detail_args, thread, pc, siginfo, context, NULL, 0, 0); 907 va_end(detail_args); 908} 909 910void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) 911{ 912 report_and_die(thread, sig, pc, siginfo, context, "%s", ""); 913} 914 915void VMError::report_and_die(const char* message, const char* detail_fmt, ...) 916{ 917 va_list detail_args; 918 va_start(detail_args, detail_fmt); 919 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, NULL, NULL, NULL, NULL, NULL, 0, 0); 920 va_end(detail_args); 921} 922 923void VMError::report_and_die(const char* message) 924{ 925 report_and_die(message, "%s", ""); 926} 927 928void VMError::report_and_die(Thread* thread, const char* filename, int lineno, const char* message, 929 const char* detail_fmt, va_list detail_args) 930{ 931 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, 0); 932} 933 934void VMError::report_and_die(Thread* thread, const char* filename, int lineno, size_t size, 935 VMErrorType vm_err_type, const char* detail_fmt, va_list detail_args) { 936 report_and_die(vm_err_type, NULL, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, size); 937} 938 939void VMError::report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args, 940 Thread* thread, address pc, void* siginfo, void* context, const char* filename, 941 int lineno, size_t size) 942{ 943 // Don't allocate large buffer on stack 944 static char buffer[O_BUFLEN]; 945 946 // How many errors occurred in error handler when reporting first_error. 947 static int recursive_error_count; 948 949 // We will first print a brief message to standard out (verbose = false), 950 // then save detailed information in log file (verbose = true). 951 static bool out_done = false; // done printing to standard out 952 static bool log_done = false; // done saving error log 953 static bool transmit_report_done = false; // done error reporting 954 955 if (SuppressFatalErrorMessage) { 956 os::abort(CreateCoredumpOnCrash); 957 } 958 intptr_t mytid = os::current_thread_id(); 959 if (first_error_tid == -1 && 960 Atomic::cmpxchg_ptr(mytid, &first_error_tid, -1) == -1) { 961 962 _id = id; 963 _message = message; 964 _thread = thread; 965 _pc = pc; 966 _siginfo = siginfo; 967 _context = context; 968 _filename = filename; 969 _lineno = lineno; 970 _size = size; 971 jio_vsnprintf(_detail_msg, sizeof(_detail_msg), detail_fmt, detail_args); 972 973 // first time 974 set_error_reported(); 975 976 if (ShowMessageBoxOnError || PauseAtExit) { 977 show_message_box(buffer, sizeof(buffer)); 978 979 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 980 // WatcherThread can kill JVM if the error handler hangs. 981 ShowMessageBoxOnError = false; 982 } 983 984 os::check_dump_limit(buffer, sizeof(buffer)); 985 986 // reset signal handlers or exception filter; make sure recursive crashes 987 // are handled properly. 988 reset_signal_handlers(); 989 990 } else { 991 // If UseOsErrorReporting we call this for each level of the call stack 992 // while searching for the exception handler. Only the first level needs 993 // to be reported. 994 if (UseOSErrorReporting && log_done) return; 995 996 // This is not the first error, see if it happened in a different thread 997 // or in the same thread during error reporting. 998 if (first_error_tid != mytid) { 999 char msgbuf[64]; 1000 jio_snprintf(msgbuf, sizeof(msgbuf), 1001 "[thread " INTX_FORMAT " also had an error]", 1002 mytid); 1003 out.print_raw_cr(msgbuf); 1004 1005 // error reporting is not MT-safe, block current thread 1006 os::infinite_sleep(); 1007 1008 } else { 1009 if (recursive_error_count++ > 30) { 1010 out.print_raw_cr("[Too many errors, abort]"); 1011 os::die(); 1012 } 1013 1014 jio_snprintf(buffer, sizeof(buffer), 1015 "[error occurred during error reporting %s, id 0x%x]", 1016 _current_step_info, _id); 1017 if (log.is_open()) { 1018 log.cr(); 1019 log.print_raw_cr(buffer); 1020 log.cr(); 1021 } else { 1022 out.cr(); 1023 out.print_raw_cr(buffer); 1024 out.cr(); 1025 } 1026 } 1027 } 1028 1029 // print to screen 1030 if (!out_done) { 1031 staticBufferStream sbs(buffer, sizeof(buffer), &out); 1032 report(&sbs, false); 1033 1034 out_done = true; 1035 1036 _current_step = 0; 1037 _current_step_info = ""; 1038 } 1039 1040 // print to error log file 1041 if (!log_done) { 1042 // see if log file is already open 1043 if (!log.is_open()) { 1044 // open log file 1045 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer)); 1046 if (fd != -1) { 1047 out.print_raw("# An error report file with more information is saved as:\n# "); 1048 out.print_raw_cr(buffer); 1049 1050 log.set_fd(fd); 1051 } else { 1052 out.print_raw_cr("# Can not save log file, dump to screen.."); 1053 log.set_fd(defaultStream::output_fd()); 1054 /* Error reporting currently needs dumpfile. 1055 * Maybe implement direct streaming in the future.*/ 1056 transmit_report_done = true; 1057 } 1058 } 1059 1060 staticBufferStream sbs(buffer, O_BUFLEN, &log); 1061 report(&sbs, true); 1062 _current_step = 0; 1063 _current_step_info = ""; 1064 1065 // Run error reporting to determine whether or not to report the crash. 1066 if (!transmit_report_done && should_report_bug(_id)) { 1067 transmit_report_done = true; 1068 const int fd2 = ::dup(log.fd()); 1069 FILE* const hs_err = ::fdopen(fd2, "r"); 1070 if (NULL != hs_err) { 1071 ErrorReporter er; 1072 er.call(hs_err, buffer, O_BUFLEN); 1073 } 1074 ::fclose(hs_err); 1075 } 1076 1077 if (log.fd() != defaultStream::output_fd()) { 1078 close(log.fd()); 1079 } 1080 1081 log.set_fd(-1); 1082 log_done = true; 1083 } 1084 1085 1086 static bool skip_OnError = false; 1087 if (!skip_OnError && OnError && OnError[0]) { 1088 skip_OnError = true; 1089 1090 out.print_raw_cr("#"); 1091 out.print_raw ("# -XX:OnError=\""); 1092 out.print_raw (OnError); 1093 out.print_raw_cr("\""); 1094 1095 char* cmd; 1096 const char* ptr = OnError; 1097 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1098 out.print_raw ("# Executing "); 1099#if defined(LINUX) || defined(_ALLBSD_SOURCE) 1100 out.print_raw ("/bin/sh -c "); 1101#elif defined(SOLARIS) 1102 out.print_raw ("/usr/bin/sh -c "); 1103#endif 1104 out.print_raw ("\""); 1105 out.print_raw (cmd); 1106 out.print_raw_cr("\" ..."); 1107 1108 if (os::fork_and_exec(cmd) < 0) { 1109 out.print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1110 } 1111 } 1112 1113 // done with OnError 1114 OnError = NULL; 1115 } 1116 1117 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay 1118 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) { 1119 skip_replay = true; 1120 ciEnv* env = ciEnv::current(); 1121 if (env != NULL) { 1122 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer)); 1123 if (fd != -1) { 1124 FILE* replay_data_file = os::open(fd, "w"); 1125 if (replay_data_file != NULL) { 1126 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1127 env->dump_replay_data_unsafe(&replay_data_stream); 1128 out.print_raw("#\n# Compiler replay data is saved as:\n# "); 1129 out.print_raw_cr(buffer); 1130 } else { 1131 out.print_raw("#\n# Can't open file to dump replay data. Error: "); 1132 out.print_raw_cr(strerror(os::get_last_error())); 1133 } 1134 } 1135 } 1136 } 1137 1138 static bool skip_bug_url = !should_report_bug(_id); 1139 if (!skip_bug_url) { 1140 skip_bug_url = true; 1141 1142 out.print_raw_cr("#"); 1143 print_bug_submit_message(&out, _thread); 1144 } 1145 1146 if (!UseOSErrorReporting) { 1147 // os::abort() will call abort hooks, try it first. 1148 static bool skip_os_abort = false; 1149 if (!skip_os_abort) { 1150 skip_os_abort = true; 1151 bool dump_core = should_report_bug(_id); 1152 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context); 1153 } 1154 1155 // if os::abort() doesn't abort, try os::die(); 1156 os::die(); 1157 } 1158} 1159 1160/* 1161 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 1162 * ensures utilities such as jmap can observe the process is a consistent state. 1163 */ 1164class VM_ReportJavaOutOfMemory : public VM_Operation { 1165 private: 1166 const char* _message; 1167 public: 1168 VM_ReportJavaOutOfMemory(const char* message) { _message = message; } 1169 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 1170 void doit(); 1171}; 1172 1173void VM_ReportJavaOutOfMemory::doit() { 1174 // Don't allocate large buffer on stack 1175 static char buffer[O_BUFLEN]; 1176 1177 tty->print_cr("#"); 1178 tty->print_cr("# java.lang.OutOfMemoryError: %s", _message); 1179 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 1180 1181 // make heap parsability 1182 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 1183 1184 char* cmd; 1185 const char* ptr = OnOutOfMemoryError; 1186 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1187 tty->print("# Executing "); 1188#if defined(LINUX) 1189 tty->print ("/bin/sh -c "); 1190#elif defined(SOLARIS) 1191 tty->print ("/usr/bin/sh -c "); 1192#endif 1193 tty->print_cr("\"%s\"...", cmd); 1194 1195 if (os::fork_and_exec(cmd) < 0) { 1196 tty->print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1197 } 1198 } 1199} 1200 1201void VMError::report_java_out_of_memory(const char* message) { 1202 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { 1203 MutexLocker ml(Heap_lock); 1204 VM_ReportJavaOutOfMemory op(message); 1205 VMThread::execute(&op); 1206 } 1207} 1208