1 /* 2 * Copyright (c) 2003, 2018, 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 "compiler/compileBroker.hpp" 28 #include "gc_interface/collectedHeap.hpp" 29 #include "prims/whitebox.hpp" 30 #include "runtime/arguments.hpp" 31 #include "runtime/frame.inline.hpp" 32 #include "runtime/init.hpp" 33 #include "runtime/os.hpp" 34 #include "runtime/thread.inline.hpp" 35 #include "runtime/vmThread.hpp" 36 #include "runtime/vm_operations.hpp" 37 #include "services/memTracker.hpp" 38 #include "utilities/debug.hpp" 39 #include "utilities/decoder.hpp" 40 #include "utilities/defaultStream.hpp" 41 #include "utilities/errorReporter.hpp" 42 #include "utilities/events.hpp" 43 #include "utilities/top.hpp" 44 #include "utilities/vmError.hpp" 45 46 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC 47 48 // List of environment variables that should be reported in error log file. 49 const char *env_list[] = { 50 // All platforms 51 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH", 52 "JAVA_COMPILER", "PATH", "USERNAME", 53 54 // Env variables that are defined on Solaris/Linux/BSD 55 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY", 56 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE", 57 58 // defined on Linux 59 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM", 60 61 // defined on Darwin 62 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH", 63 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH", 64 "DYLD_INSERT_LIBRARIES", 65 66 // defined on Windows 67 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR", 68 69 (const char *)0 70 }; 71 72 // Fatal error handler for internal errors and crashes. 73 // 74 // The default behavior of fatal error handler is to print a brief message 75 // to standard out (defaultStream::output_fd()), then save detailed information 76 // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple 77 // threads are having troubles at the same time, only one error is reported. 78 // The thread that is reporting error will abort VM when it is done, all other 79 // threads are blocked forever inside report_and_die(). 80 81 // Constructor for crashes 82 VMError::VMError(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) { 83 _thread = thread; 84 _id = sig; 85 _pc = pc; 86 _siginfo = siginfo; 87 _context = context; 88 89 _verbose = false; 90 _current_step = 0; 91 _current_step_info = NULL; 92 93 _message = NULL; 94 _detail_msg = NULL; 95 _filename = NULL; 96 _lineno = 0; 97 98 _size = 0; 99 } 100 101 // Constructor for internal errors 102 VMError::VMError(Thread* thread, const char* filename, int lineno, 103 const char* message, const char * detail_msg) 104 { 105 _thread = thread; 106 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal 107 _filename = filename; 108 _lineno = lineno; 109 _message = message; 110 _detail_msg = detail_msg; 111 112 _verbose = false; 113 _current_step = 0; 114 _current_step_info = NULL; 115 116 _pc = NULL; 117 _siginfo = NULL; 118 _context = NULL; 119 120 _size = 0; 121 } 122 123 // Constructor for OOM errors 124 VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size, 125 VMErrorType vm_err_type, const char* message) { 126 _thread = thread; 127 _id = vm_err_type; // Value that's not an OS exception/signal 128 _filename = filename; 129 _lineno = lineno; 130 _message = message; 131 _detail_msg = NULL; 132 133 _verbose = false; 134 _current_step = 0; 135 _current_step_info = NULL; 136 137 _pc = NULL; 138 _siginfo = NULL; 139 _context = NULL; 140 141 _size = size; 142 } 143 144 145 // Constructor for non-fatal errors 146 VMError::VMError(const char* message) { 147 _thread = NULL; 148 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal 149 _filename = NULL; 150 _lineno = 0; 151 _message = message; 152 _detail_msg = NULL; 153 154 _verbose = false; 155 _current_step = 0; 156 _current_step_info = NULL; 157 158 _pc = NULL; 159 _siginfo = NULL; 160 _context = NULL; 161 162 _size = 0; 163 } 164 165 // -XX:OnError=<string>, where <string> can be a list of commands, separated 166 // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by 167 // a single "%". Some examples: 168 // 169 // -XX:OnError="pmap %p" // show memory map 170 // -XX:OnError="gcore %p; dbx - %p" // dump core and launch debugger 171 // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com" 172 // -XX:OnError="kill -9 %p" // ?#!@# 173 174 // A simple parser for -XX:OnError, usage: 175 // ptr = OnError; 176 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL) 177 // ... ... 178 static char* next_OnError_command(char* buf, int buflen, const char** ptr) { 179 if (ptr == NULL || *ptr == NULL) return NULL; 180 181 const char* cmd = *ptr; 182 183 // skip leading blanks or ';' 184 while (*cmd == ' ' || *cmd == ';') cmd++; 185 186 if (*cmd == '\0') return NULL; 187 188 const char * cmdend = cmd; 189 while (*cmdend != '\0' && *cmdend != ';') cmdend++; 190 191 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen); 192 193 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1); 194 return buf; 195 } 196 197 198 static void print_bug_submit_message(outputStream *out, Thread *thread) { 199 if (out == NULL) return; 200 out->print_raw_cr("# If you would like to submit a bug report, please visit:"); 201 out->print_raw ("# "); 202 out->print_raw_cr(Arguments::java_vendor_url_bug()); 203 // If the crash is in native code, encourage user to submit a bug to the 204 // provider of that code. 205 if (thread && thread->is_Java_thread() && 206 !thread->is_hidden_from_external_view()) { 207 JavaThread* jt = (JavaThread*)thread; 208 if (jt->thread_state() == _thread_in_native) { 209 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug."); 210 } 211 } 212 out->print_raw_cr("#"); 213 } 214 215 bool VMError::coredump_status; 216 char VMError::coredump_message[O_BUFLEN]; 217 218 void VMError::report_coredump_status(const char* message, bool status) { 219 coredump_status = status; 220 strncpy(coredump_message, message, sizeof(coredump_message)); 221 coredump_message[sizeof(coredump_message)-1] = 0; 222 } 223 224 225 // Return a string to describe the error 226 char* VMError::error_string(char* buf, int buflen) { 227 char signame_buf[64]; 228 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf)); 229 230 if (signame) { 231 jio_snprintf(buf, buflen, 232 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" INTPTR_FORMAT, 233 signame, _id, _pc, 234 os::current_process_id(), os::current_thread_id()); 235 } else if (_filename != NULL && _lineno > 0) { 236 // skip directory names 237 char separator = os::file_separator()[0]; 238 const char *p = strrchr(_filename, separator); 239 int n = jio_snprintf(buf, buflen, 240 "Internal Error at %s:%d, pid=%d, tid=" INTPTR_FORMAT, 241 p ? p + 1 : _filename, _lineno, 242 os::current_process_id(), os::current_thread_id()); 243 if (n >= 0 && n < buflen && _message) { 244 if (_detail_msg) { 245 jio_snprintf(buf + n, buflen - n, "%s%s: %s", 246 os::line_separator(), _message, _detail_msg); 247 } else { 248 jio_snprintf(buf + n, buflen - n, "%sError: %s", 249 os::line_separator(), _message); 250 } 251 } 252 } else { 253 jio_snprintf(buf, buflen, 254 "Internal Error (0x%x), pid=%d, tid=" INTPTR_FORMAT, 255 _id, os::current_process_id(), os::current_thread_id()); 256 } 257 258 return buf; 259 } 260 261 void VMError::print_stack_trace(outputStream* st, JavaThread* jt, 262 char* buf, int buflen, bool verbose) { 263 #ifdef ZERO 264 if (jt->zero_stack()->sp() && jt->top_zero_frame()) { 265 // StackFrameStream uses the frame anchor, which may not have 266 // been set up. This can be done at any time in Zero, however, 267 // so if it hasn't been set up then we just set it up now and 268 // clear it again when we're done. 269 bool has_last_Java_frame = jt->has_last_Java_frame(); 270 if (!has_last_Java_frame) 271 jt->set_last_Java_frame(); 272 st->print("Java frames:"); 273 274 // If the top frame is a Shark frame and the frame anchor isn't 275 // set up then it's possible that the information in the frame 276 // is garbage: it could be from a previous decache, or it could 277 // simply have never been written. So we print a warning... 278 StackFrameStream sfs(jt); 279 if (!has_last_Java_frame && !sfs.is_done()) { 280 if (sfs.current()->zeroframe()->is_shark_frame()) { 281 st->print(" (TOP FRAME MAY BE JUNK)"); 282 } 283 } 284 st->cr(); 285 286 // Print the frames 287 for(int i = 0; !sfs.is_done(); sfs.next(), i++) { 288 sfs.current()->zero_print_on_error(i, st, buf, buflen); 289 st->cr(); 290 } 291 292 // Reset the frame anchor if necessary 293 if (!has_last_Java_frame) 294 jt->reset_last_Java_frame(); 295 } 296 #else 297 if (jt->has_last_Java_frame()) { 298 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)"); 299 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) { 300 sfs.current()->print_on_error(st, buf, buflen, verbose); 301 st->cr(); 302 } 303 } 304 #endif // ZERO 305 } 306 307 // This is the main function to report a fatal error. Only one thread can 308 // call this function, so we don't need to worry about MT-safety. But it's 309 // possible that the error handler itself may crash or die on an internal 310 // error, for example, when the stack/heap is badly damaged. We must be 311 // able to handle recursive errors that happen inside error handler. 312 // 313 // Error reporting is done in several steps. If a crash or internal error 314 // occurred when reporting an error, the nested signal/exception handler 315 // can skip steps that are already (or partially) done. Error reporting will 316 // continue from the next step. This allows us to retrieve and print 317 // information that may be unsafe to get after a fatal error. If it happens, 318 // you may find nested report_and_die() frames when you look at the stack 319 // in a debugger. 320 // 321 // In general, a hang in error handler is much worse than a crash or internal 322 // error, as it's harder to recover from a hang. Deadlock can happen if we 323 // try to grab a lock that is already owned by current thread, or if the 324 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the 325 // error handler and all the functions it called should avoid grabbing any 326 // lock. An important thing to notice is that memory allocation needs a lock. 327 // 328 // We should avoid using large stack allocated buffers. Many errors happen 329 // when stack space is already low. Making things even worse is that there 330 // could be nested report_and_die() calls on stack (see above). Only one 331 // thread can report error, so large buffers are statically allocated in data 332 // segment. 333 334 void VMError::report(outputStream* st) { 335 # define BEGIN if (_current_step == 0) { _current_step = 1; 336 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s; 337 # define END } 338 339 // don't allocate large buffer on stack 340 static char buf[O_BUFLEN]; 341 342 BEGIN 343 344 STEP(10, "(printing fatal error message)") 345 346 st->print_cr("#"); 347 if (should_report_bug(_id)) { 348 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:"); 349 } else { 350 st->print_cr("# There is insufficient memory for the Java " 351 "Runtime Environment to continue."); 352 } 353 354 STEP(15, "(printing type of error)") 355 356 switch(_id) { 357 case OOM_MALLOC_ERROR: 358 case OOM_MMAP_ERROR: 359 if (_size) { 360 st->print("# Native memory allocation "); 361 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " : 362 "(mmap) failed to map "); 363 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size); 364 st->print("%s", buf); 365 st->print(" bytes"); 366 if (_message != NULL) { 367 st->print(" for "); 368 st->print("%s", _message); 369 } 370 st->cr(); 371 } else { 372 if (_message != NULL) 373 st->print("# "); 374 st->print_cr("%s", _message); 375 } 376 // In error file give some solutions 377 if (_verbose) { 378 st->print_cr("# Possible reasons:"); 379 st->print_cr("# The system is out of physical RAM or swap space"); 380 st->print_cr("# In 32 bit mode, the process size limit was hit"); 381 st->print_cr("# Possible solutions:"); 382 st->print_cr("# Reduce memory load on the system"); 383 st->print_cr("# Increase physical memory or swap space"); 384 st->print_cr("# Check if swap backing store is full"); 385 st->print_cr("# Use 64 bit Java on a 64 bit OS"); 386 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)"); 387 st->print_cr("# Decrease number of Java threads"); 388 st->print_cr("# Decrease Java thread stack sizes (-Xss)"); 389 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize="); 390 st->print_cr("# This output file may be truncated or incomplete."); 391 } else { 392 return; // that's enough for the screen 393 } 394 break; 395 case INTERNAL_ERROR: 396 default: 397 break; 398 } 399 400 STEP(20, "(printing exception/signal name)") 401 402 st->print_cr("#"); 403 st->print("# "); 404 // Is it an OS exception/signal? 405 if (os::exception_name(_id, buf, sizeof(buf))) { 406 st->print("%s", buf); 407 st->print(" (0x%x)", _id); // signal number 408 st->print(" at pc=" PTR_FORMAT, _pc); 409 } else { 410 if (should_report_bug(_id)) { 411 st->print("Internal Error"); 412 } else { 413 st->print("Out of Memory Error"); 414 } 415 if (_filename != NULL && _lineno > 0) { 416 #ifdef PRODUCT 417 // In product mode chop off pathname? 418 char separator = os::file_separator()[0]; 419 const char *p = strrchr(_filename, separator); 420 const char *file = p ? p+1 : _filename; 421 #else 422 const char *file = _filename; 423 #endif 424 size_t len = strlen(file); 425 size_t buflen = sizeof(buf); 426 427 strncpy(buf, file, buflen); 428 if (len + 10 < buflen) { 429 sprintf(buf + len, ":%d", _lineno); 430 } 431 st->print(" (%s)", buf); 432 } else { 433 st->print(" (0x%x)", _id); 434 } 435 } 436 437 STEP(30, "(printing current thread and pid)") 438 439 // process id, thread id 440 st->print(", pid=%d", os::current_process_id()); 441 st->print(", tid=" INTPTR_FORMAT, os::current_thread_id()); 442 st->cr(); 443 444 STEP(40, "(printing error message)") 445 446 if (should_report_bug(_id)) { // already printed the message. 447 // error message 448 if (_detail_msg) { 449 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg); 450 } else if (_message) { 451 st->print_cr("# Error: %s", _message); 452 } 453 } 454 455 STEP(50, "(printing Java version string)") 456 457 // VM version 458 st->print_cr("#"); 459 JDK_Version::current().to_string(buf, sizeof(buf)); 460 const char* runtime_name = JDK_Version::runtime_name() != NULL ? 461 JDK_Version::runtime_name() : ""; 462 const char* runtime_version = JDK_Version::runtime_version() != NULL ? 463 JDK_Version::runtime_version() : ""; 464 st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version); 465 st->print_cr("# Java VM: %s (%s %s %s %s)", 466 Abstract_VM_Version::vm_name(), 467 Abstract_VM_Version::vm_release(), 468 Abstract_VM_Version::vm_info_string(), 469 Abstract_VM_Version::vm_platform_string(), 470 UseCompressedOops ? "compressed oops" : "" 471 ); 472 473 STEP(60, "(printing problematic frame)") 474 475 // Print current frame if we have a context (i.e. it's a crash) 476 if (_context) { 477 st->print_cr("# Problematic frame:"); 478 st->print("# "); 479 frame fr = os::fetch_frame_from_context(_context); 480 fr.print_on_error(st, buf, sizeof(buf)); 481 st->cr(); 482 st->print_cr("#"); 483 } 484 STEP(63, "(printing core file information)") 485 st->print("# "); 486 if (coredump_status) { 487 st->print("Core dump written. Default location: %s", coredump_message); 488 } else { 489 st->print("Failed to write core dump. %s", coredump_message); 490 } 491 st->cr(); 492 st->print_cr("#"); 493 494 STEP(65, "(printing bug submit message)") 495 496 if (should_report_bug(_id) && _verbose) { 497 print_bug_submit_message(st, _thread); 498 } 499 500 STEP(70, "(printing thread)" ) 501 502 if (_verbose) { 503 st->cr(); 504 st->print_cr("--------------- T H R E A D ---------------"); 505 st->cr(); 506 } 507 508 STEP(80, "(printing current thread)" ) 509 510 // current thread 511 if (_verbose) { 512 if (_thread) { 513 st->print("Current thread (" PTR_FORMAT "): ", _thread); 514 _thread->print_on_error(st, buf, sizeof(buf)); 515 st->cr(); 516 } else { 517 st->print_cr("Current thread is native thread"); 518 } 519 st->cr(); 520 } 521 522 STEP(90, "(printing siginfo)" ) 523 524 // signal no, signal code, address that caused the fault 525 if (_verbose && _siginfo) { 526 os::print_siginfo(st, _siginfo); 527 st->cr(); 528 } 529 530 STEP(100, "(printing registers, top of stack, instructions near pc)") 531 532 // registers, top of stack, instructions near pc 533 if (_verbose && _context) { 534 os::print_context(st, _context); 535 st->cr(); 536 } 537 538 STEP(105, "(printing register info)") 539 540 // decode register contents if possible 541 if (_verbose && _context && Universe::is_fully_initialized()) { 542 os::print_register_info(st, _context); 543 st->cr(); 544 } 545 546 STEP(110, "(printing stack bounds)" ) 547 548 if (_verbose) { 549 st->print("Stack: "); 550 551 address stack_top; 552 size_t stack_size; 553 554 if (_thread) { 555 stack_top = _thread->stack_base(); 556 stack_size = _thread->stack_size(); 557 } else { 558 stack_top = os::current_stack_base(); 559 stack_size = os::current_stack_size(); 560 } 561 562 address stack_bottom = stack_top - stack_size; 563 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top); 564 565 frame fr = _context ? os::fetch_frame_from_context(_context) 566 : os::current_frame(); 567 568 if (fr.sp()) { 569 st->print(", sp=" PTR_FORMAT, fr.sp()); 570 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024); 571 st->print(", free space=" SIZE_FORMAT "k", free_stack_size); 572 } 573 574 st->cr(); 575 } 576 577 STEP(120, "(printing native stack)" ) 578 579 if (_verbose) { 580 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) { 581 // We have printed the native stack in platform-specific code 582 // Windows/x64 needs special handling. 583 } else { 584 frame fr = _context ? os::fetch_frame_from_context(_context) 585 : os::current_frame(); 586 587 print_native_stack(st, fr, _thread, buf, sizeof(buf)); 588 } 589 } 590 591 STEP(130, "(printing Java stack)" ) 592 593 if (_verbose && _thread && _thread->is_Java_thread()) { 594 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf)); 595 } 596 597 STEP(135, "(printing target Java thread stack)" ) 598 599 // printing Java thread stack trace if it is involved in GC crash 600 if (_verbose && _thread && (_thread->is_Named_thread())) { 601 JavaThread* jt = ((NamedThread *)_thread)->processed_thread(); 602 if (jt != NULL) { 603 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id()); 604 print_stack_trace(st, jt, buf, sizeof(buf), true); 605 } 606 } 607 608 STEP(140, "(printing VM operation)" ) 609 610 if (_verbose && _thread && _thread->is_VM_thread()) { 611 VMThread* t = (VMThread*)_thread; 612 VM_Operation* op = t->vm_operation(); 613 if (op) { 614 op->print_on_error(st); 615 st->cr(); 616 st->cr(); 617 } 618 } 619 620 STEP(150, "(printing current compile task)" ) 621 622 if (_verbose && _thread && _thread->is_Compiler_thread()) { 623 CompilerThread* t = (CompilerThread*)_thread; 624 if (t->task()) { 625 st->cr(); 626 st->print_cr("Current CompileTask:"); 627 t->task()->print_line_on_error(st, buf, sizeof(buf)); 628 st->cr(); 629 } 630 } 631 632 STEP(160, "(printing process)" ) 633 634 if (_verbose) { 635 st->cr(); 636 st->print_cr("--------------- P R O C E S S ---------------"); 637 st->cr(); 638 } 639 640 STEP(170, "(printing all threads)" ) 641 642 // all threads 643 if (_verbose && _thread) { 644 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 645 st->cr(); 646 } 647 648 STEP(175, "(printing VM state)" ) 649 650 if (_verbose) { 651 // Safepoint state 652 st->print("VM state:"); 653 654 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 655 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 656 else st->print("not at safepoint"); 657 658 // Also see if error occurred during initialization or shutdown 659 if (!Universe::is_fully_initialized()) { 660 st->print(" (not fully initialized)"); 661 } else if (VM_Exit::vm_exited()) { 662 st->print(" (shutting down)"); 663 } else { 664 st->print(" (normal execution)"); 665 } 666 st->cr(); 667 st->cr(); 668 } 669 670 STEP(180, "(printing owned locks on error)" ) 671 672 // mutexes/monitors that currently have an owner 673 if (_verbose) { 674 print_owned_locks_on_error(st); 675 st->cr(); 676 } 677 678 STEP(182, "(printing number of OutOfMemoryError and StackOverflow exceptions)") 679 680 if (_verbose && Exceptions::has_exception_counts()) { 681 st->print_cr("OutOfMemory and StackOverflow Exception counts:"); 682 Exceptions::print_exception_counts_on_error(st); 683 st->cr(); 684 } 685 686 STEP(185, "(printing compressed oops mode") 687 688 if (_verbose && UseCompressedOops) { 689 Universe::print_compressed_oops_mode(st); 690 if (UseCompressedClassPointers) { 691 Metaspace::print_compressed_class_space(st); 692 } 693 st->cr(); 694 } 695 696 STEP(190, "(printing heap information)" ) 697 698 if (_verbose && Universe::is_fully_initialized()) { 699 Universe::heap()->print_on_error(st); 700 st->cr(); 701 702 st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page()); 703 st->cr(); 704 } 705 706 STEP(195, "(printing code cache information)" ) 707 708 if (_verbose && Universe::is_fully_initialized()) { 709 // print code cache information before vm abort 710 CodeCache::print_summary(st); 711 st->cr(); 712 } 713 714 STEP(200, "(printing ring buffers)" ) 715 716 if (_verbose) { 717 Events::print_all(st); 718 st->cr(); 719 } 720 721 STEP(205, "(printing dynamic libraries)" ) 722 723 if (_verbose) { 724 // dynamic libraries, or memory map 725 os::print_dll_info(st); 726 st->cr(); 727 } 728 729 STEP(210, "(printing VM options)" ) 730 731 if (_verbose) { 732 // VM options 733 Arguments::print_on(st); 734 st->cr(); 735 } 736 737 STEP(215, "(printing warning if internal testing API used)" ) 738 739 if (WhiteBox::used()) { 740 st->print_cr("Unsupported internal testing APIs have been used."); 741 st->cr(); 742 } 743 744 STEP(220, "(printing environment variables)" ) 745 746 if (_verbose) { 747 os::print_environment_variables(st, env_list, buf, sizeof(buf)); 748 st->cr(); 749 } 750 751 STEP(225, "(printing signal handlers)" ) 752 753 if (_verbose) { 754 os::print_signal_handlers(st, buf, sizeof(buf)); 755 st->cr(); 756 } 757 758 STEP(228, "(Native Memory Tracking)" ) 759 if (_verbose) { 760 MemTracker::error_report(st); 761 } 762 763 STEP(230, "" ) 764 765 if (_verbose) { 766 st->cr(); 767 st->print_cr("--------------- S Y S T E M ---------------"); 768 st->cr(); 769 } 770 771 STEP(240, "(printing OS information)" ) 772 773 if (_verbose) { 774 os::print_os_info(st); 775 st->cr(); 776 } 777 778 STEP(250, "(printing CPU info)" ) 779 if (_verbose) { 780 os::print_cpu_info(st); 781 st->cr(); 782 } 783 784 STEP(260, "(printing memory info)" ) 785 786 if (_verbose) { 787 os::print_memory_info(st); 788 st->cr(); 789 } 790 791 STEP(270, "(printing internal vm info)" ) 792 793 if (_verbose) { 794 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 795 st->cr(); 796 } 797 798 STEP(280, "(printing date and time)" ) 799 800 if (_verbose) { 801 os::print_date_and_time(st, buf, sizeof(buf)); 802 st->cr(); 803 } 804 805 END 806 807 # undef BEGIN 808 # undef STEP 809 # undef END 810 } 811 812 VMError* volatile VMError::first_error = NULL; 813 volatile jlong VMError::first_error_tid = -1; 814 815 // An error could happen before tty is initialized or after it has been 816 // destroyed. Here we use a very simple unbuffered fdStream for printing. 817 // Only out.print_raw() and out.print_raw_cr() should be used, as other 818 // printing methods need to allocate large buffer on stack. To format a 819 // string, use jio_snprintf() with a static buffer or use staticBufferStream. 820 fdStream VMError::out(defaultStream::output_fd()); 821 fdStream VMError::log; // error log used by VMError::report_and_die() 822 823 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */ 824 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) { 825 int fd = -1; 826 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) { 827 // the O_EXCL flag will cause the open to fail if the file exists 828 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666); 829 } 830 return fd; 831 } 832 833 /** 834 * Construct file name for a log file and return it's file descriptor. 835 * Name and location depends on pattern, default_pattern params and access 836 * permissions. 837 */ 838 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) { 839 int fd = -1; 840 841 // If possible, use specified pattern to construct log file name 842 if (pattern != NULL) { 843 fd = expand_and_open(pattern, buf, buflen, 0); 844 } 845 846 // Either user didn't specify, or the user's location failed, 847 // so use the default name in the current directory 848 if (fd == -1) { 849 const char* cwd = os::get_current_directory(buf, buflen); 850 if (cwd != NULL) { 851 size_t pos = strlen(cwd); 852 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator()); 853 pos += fsep_len; 854 if (fsep_len > 0) { 855 fd = expand_and_open(default_pattern, buf, buflen, pos); 856 } 857 } 858 } 859 860 // try temp directory if it exists. 861 if (fd == -1) { 862 const char* tmpdir = os::get_temp_directory(); 863 if (tmpdir != NULL && strlen(tmpdir) > 0) { 864 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator()); 865 if (pos > 0) { 866 fd = expand_and_open(default_pattern, buf, buflen, pos); 867 } 868 } 869 } 870 871 return fd; 872 } 873 874 void VMError::report_and_die() { 875 // Don't allocate large buffer on stack 876 static char buffer[O_BUFLEN]; 877 878 // How many errors occurred in error handler when reporting first_error. 879 static int recursive_error_count; 880 881 // We will first print a brief message to standard out (verbose = false), 882 // then save detailed information in log file (verbose = true). 883 static bool out_done = false; // done printing to standard out 884 static bool log_done = false; // done saving error log 885 static bool transmit_report_done = false; // done error reporting 886 887 if (SuppressFatalErrorMessage) { 888 os::abort(); 889 } 890 jlong mytid = os::current_thread_id(); 891 if (first_error == NULL && 892 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) { 893 894 // first time 895 first_error_tid = mytid; 896 set_error_reported(); 897 898 if (ShowMessageBoxOnError || PauseAtExit) { 899 show_message_box(buffer, sizeof(buffer)); 900 901 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 902 // WatcherThread can kill JVM if the error handler hangs. 903 ShowMessageBoxOnError = false; 904 } 905 906 // Write a minidump on Windows, check core dump limits on Linux/Solaris 907 os::check_or_create_dump(_siginfo, _context, buffer, sizeof(buffer)); 908 909 // reset signal handlers or exception filter; make sure recursive crashes 910 // are handled properly. 911 reset_signal_handlers(); 912 913 } else { 914 // If UseOsErrorReporting we call this for each level of the call stack 915 // while searching for the exception handler. Only the first level needs 916 // to be reported. 917 if (UseOSErrorReporting && log_done) return; 918 919 // This is not the first error, see if it happened in a different thread 920 // or in the same thread during error reporting. 921 if (first_error_tid != mytid) { 922 char msgbuf[64]; 923 jio_snprintf(msgbuf, sizeof(msgbuf), 924 "[thread " INT64_FORMAT " also had an error]", 925 mytid); 926 out.print_raw_cr(msgbuf); 927 928 // error reporting is not MT-safe, block current thread 929 os::infinite_sleep(); 930 931 } else { 932 if (recursive_error_count++ > 30) { 933 out.print_raw_cr("[Too many errors, abort]"); 934 os::die(); 935 } 936 937 jio_snprintf(buffer, sizeof(buffer), 938 "[error occurred during error reporting %s, id 0x%x]", 939 first_error ? first_error->_current_step_info : "", 940 _id); 941 if (log.is_open()) { 942 log.cr(); 943 log.print_raw_cr(buffer); 944 log.cr(); 945 } else { 946 out.cr(); 947 out.print_raw_cr(buffer); 948 out.cr(); 949 } 950 } 951 } 952 953 // print to screen 954 if (!out_done) { 955 first_error->_verbose = false; 956 957 staticBufferStream sbs(buffer, sizeof(buffer), &out); 958 first_error->report(&sbs); 959 960 out_done = true; 961 962 first_error->_current_step = 0; // reset current_step 963 first_error->_current_step_info = ""; // reset current_step string 964 } 965 966 // print to error log file 967 if (!log_done) { 968 first_error->_verbose = true; 969 970 // see if log file is already open 971 if (!log.is_open()) { 972 // open log file 973 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer)); 974 if (fd != -1) { 975 out.print_raw("# An error report file with more information is saved as:\n# "); 976 out.print_raw_cr(buffer); 977 978 log.set_fd(fd); 979 } else { 980 out.print_raw_cr("# Can not save log file, dump to screen.."); 981 log.set_fd(defaultStream::output_fd()); 982 /* Error reporting currently needs dumpfile. 983 * Maybe implement direct streaming in the future.*/ 984 transmit_report_done = true; 985 } 986 } 987 988 staticBufferStream sbs(buffer, O_BUFLEN, &log); 989 first_error->report(&sbs); 990 first_error->_current_step = 0; // reset current_step 991 first_error->_current_step_info = ""; // reset current_step string 992 993 // Run error reporting to determine whether or not to report the crash. 994 if (!transmit_report_done && should_report_bug(first_error->_id)) { 995 transmit_report_done = true; 996 FILE* hs_err = os::open(log.fd(), "r"); 997 if (NULL != hs_err) { 998 ErrorReporter er; 999 er.call(hs_err, buffer, O_BUFLEN); 1000 } 1001 } 1002 1003 if (log.fd() != defaultStream::output_fd()) { 1004 close(log.fd()); 1005 } 1006 1007 log.set_fd(-1); 1008 log_done = true; 1009 } 1010 1011 1012 static bool skip_OnError = false; 1013 if (!skip_OnError && OnError && OnError[0]) { 1014 skip_OnError = true; 1015 1016 out.print_raw_cr("#"); 1017 out.print_raw ("# -XX:OnError=\""); 1018 out.print_raw (OnError); 1019 out.print_raw_cr("\""); 1020 1021 char* cmd; 1022 const char* ptr = OnError; 1023 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1024 out.print_raw ("# Executing "); 1025 #if defined(LINUX) || defined(_ALLBSD_SOURCE) 1026 out.print_raw ("/bin/sh -c "); 1027 #elif defined(SOLARIS) 1028 out.print_raw ("/usr/bin/sh -c "); 1029 #endif 1030 out.print_raw ("\""); 1031 out.print_raw (cmd); 1032 out.print_raw_cr("\" ..."); 1033 1034 if (os::fork_and_exec(cmd) < 0) { 1035 out.print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1036 } 1037 } 1038 1039 // done with OnError 1040 OnError = NULL; 1041 } 1042 1043 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay 1044 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) { 1045 skip_replay = true; 1046 ciEnv* env = ciEnv::current(); 1047 if (env != NULL) { 1048 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer)); 1049 if (fd != -1) { 1050 FILE* replay_data_file = os::open(fd, "w"); 1051 if (replay_data_file != NULL) { 1052 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1053 env->dump_replay_data_unsafe(&replay_data_stream); 1054 out.print_raw("#\n# Compiler replay data is saved as:\n# "); 1055 out.print_raw_cr(buffer); 1056 } else { 1057 out.print_raw("#\n# Can't open file to dump replay data. Error: "); 1058 out.print_raw_cr(strerror(os::get_last_error())); 1059 } 1060 } 1061 } 1062 } 1063 1064 static bool skip_bug_url = !should_report_bug(first_error->_id); 1065 if (!skip_bug_url) { 1066 skip_bug_url = true; 1067 1068 out.print_raw_cr("#"); 1069 print_bug_submit_message(&out, _thread); 1070 } 1071 1072 if (!UseOSErrorReporting) { 1073 // os::abort() will call abort hooks, try it first. 1074 static bool skip_os_abort = false; 1075 if (!skip_os_abort) { 1076 skip_os_abort = true; 1077 bool dump_core = should_report_bug(first_error->_id); 1078 os::abort(dump_core); 1079 } 1080 1081 // if os::abort() doesn't abort, try os::die(); 1082 os::die(); 1083 } 1084 } 1085 1086 /* 1087 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 1088 * ensures utilities such as jmap can observe the process is a consistent state. 1089 */ 1090 class VM_ReportJavaOutOfMemory : public VM_Operation { 1091 private: 1092 VMError *_err; 1093 public: 1094 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; } 1095 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 1096 void doit(); 1097 }; 1098 1099 void VM_ReportJavaOutOfMemory::doit() { 1100 // Don't allocate large buffer on stack 1101 static char buffer[O_BUFLEN]; 1102 1103 tty->print_cr("#"); 1104 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message()); 1105 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 1106 1107 // make heap parsability 1108 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 1109 1110 char* cmd; 1111 const char* ptr = OnOutOfMemoryError; 1112 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1113 tty->print("# Executing "); 1114 #if defined(LINUX) 1115 tty->print ("/bin/sh -c "); 1116 #elif defined(SOLARIS) 1117 tty->print ("/usr/bin/sh -c "); 1118 #endif 1119 tty->print_cr("\"%s\"...", cmd); 1120 1121 if (os::fork_and_exec(cmd) < 0) { 1122 tty->print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1123 } 1124 } 1125 } 1126 1127 void VMError::report_java_out_of_memory() { 1128 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { 1129 MutexLocker ml(Heap_lock); 1130 VM_ReportJavaOutOfMemory op(this); 1131 VMThread::execute(&op); 1132 } 1133 }