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 "gc/shared/collectedHeap.hpp" 30 #include "prims/whitebox.hpp" 31 #include "runtime/arguments.hpp" 32 #include "runtime/atomic.inline.hpp" 33 #include "runtime/frame.inline.hpp" 34 #include "runtime/init.hpp" 35 #include "runtime/os.hpp" 36 #include "runtime/thread.inline.hpp" 37 #include "runtime/vmThread.hpp" 38 #include "runtime/vm_operations.hpp" 39 #include "services/memTracker.hpp" 40 #include "utilities/debug.hpp" 41 #include "utilities/decoder.hpp" 42 #include "utilities/defaultStream.hpp" 43 #include "utilities/errorReporter.hpp" 44 #include "utilities/events.hpp" 45 #include "utilities/top.hpp" 46 #include "utilities/vmError.hpp" 47 48 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC 49 50 // List of environment variables that should be reported in error log file. 51 const char *env_list[] = { 52 // All platforms 53 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH", 54 "JAVA_COMPILER", "PATH", "USERNAME", 55 56 // Env variables that are defined on Solaris/Linux/BSD 57 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY", 58 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE", 59 60 // defined on Linux 61 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM", 62 63 // defined on Darwin 64 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH", 65 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH", 66 "DYLD_INSERT_LIBRARIES", 67 68 // defined on Windows 69 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR", 70 71 (const char *)0 72 }; 73 74 // A simple parser for -XX:OnError, usage: 75 // ptr = OnError; 76 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL) 77 // ... ... 78 static char* next_OnError_command(char* buf, int buflen, const char** ptr) { 79 if (ptr == NULL || *ptr == NULL) return NULL; 80 81 const char* cmd = *ptr; 82 83 // skip leading blanks or ';' 84 while (*cmd == ' ' || *cmd == ';') cmd++; 85 86 if (*cmd == '\0') return NULL; 87 88 const char * cmdend = cmd; 89 while (*cmdend != '\0' && *cmdend != ';') cmdend++; 90 91 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen); 92 93 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1); 94 return buf; 95 } 96 97 static void print_bug_submit_message(outputStream *out, Thread *thread) { 98 if (out == NULL) return; 99 out->print_raw_cr("# If you would like to submit a bug report, please visit:"); 100 out->print_raw ("# "); 101 out->print_raw_cr(Arguments::java_vendor_url_bug()); 102 // If the crash is in native code, encourage user to submit a bug to the 103 // provider of that code. 104 if (thread && thread->is_Java_thread() && 105 !thread->is_hidden_from_external_view()) { 106 JavaThread* jt = (JavaThread*)thread; 107 if (jt->thread_state() == _thread_in_native) { 108 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug."); 109 } 110 } 111 out->print_raw_cr("#"); 112 } 113 114 bool VMError::coredump_status; 115 char VMError::coredump_message[O_BUFLEN]; 116 117 void VMError::record_coredump_status(const char* message, bool status) { 118 coredump_status = status; 119 strncpy(coredump_message, message, sizeof(coredump_message)); 120 coredump_message[sizeof(coredump_message)-1] = 0; 121 } 122 123 // Return a string to describe the error 124 char* VMError::error_string(char* buf, int buflen) { 125 char signame_buf[64]; 126 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf)); 127 128 if (signame) { 129 jio_snprintf(buf, buflen, 130 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT, 131 signame, _id, _pc, 132 os::current_process_id(), os::current_thread_id()); 133 } else if (_filename != NULL && _lineno > 0) { 134 // skip directory names 135 char separator = os::file_separator()[0]; 136 const char *p = strrchr(_filename, separator); 137 int n = jio_snprintf(buf, buflen, 138 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT, 139 p ? p + 1 : _filename, _lineno, 140 os::current_process_id(), os::current_thread_id()); 141 if (n >= 0 && n < buflen && _message) { 142 if (strlen(_detail_msg) > 0) { 143 jio_snprintf(buf + n, buflen - n, "%s%s: %s", 144 os::line_separator(), _message, _detail_msg); 145 } else { 146 jio_snprintf(buf + n, buflen - n, "%sError: %s", 147 os::line_separator(), _message); 148 } 149 } 150 } else { 151 jio_snprintf(buf, buflen, 152 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT, 153 _id, os::current_process_id(), os::current_thread_id()); 154 } 155 156 return buf; 157 } 158 159 void VMError::print_stack_trace(outputStream* st, JavaThread* jt, 160 char* buf, int buflen, bool verbose) { 161 #ifdef ZERO 162 if (jt->zero_stack()->sp() && jt->top_zero_frame()) { 163 // StackFrameStream uses the frame anchor, which may not have 164 // been set up. This can be done at any time in Zero, however, 165 // so if it hasn't been set up then we just set it up now and 166 // clear it again when we're done. 167 bool has_last_Java_frame = jt->has_last_Java_frame(); 168 if (!has_last_Java_frame) 169 jt->set_last_Java_frame(); 170 st->print("Java frames:"); 171 172 // If the top frame is a Shark frame and the frame anchor isn't 173 // set up then it's possible that the information in the frame 174 // is garbage: it could be from a previous decache, or it could 175 // simply have never been written. So we print a warning... 176 StackFrameStream sfs(jt); 177 if (!has_last_Java_frame && !sfs.is_done()) { 178 if (sfs.current()->zeroframe()->is_shark_frame()) { 179 st->print(" (TOP FRAME MAY BE JUNK)"); 180 } 181 } 182 st->cr(); 183 184 // Print the frames 185 for(int i = 0; !sfs.is_done(); sfs.next(), i++) { 186 sfs.current()->zero_print_on_error(i, st, buf, buflen); 187 st->cr(); 188 } 189 190 // Reset the frame anchor if necessary 191 if (!has_last_Java_frame) 192 jt->reset_last_Java_frame(); 193 } 194 #else 195 if (jt->has_last_Java_frame()) { 196 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)"); 197 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) { 198 sfs.current()->print_on_error(st, buf, buflen, verbose); 199 st->cr(); 200 } 201 } 202 #endif // ZERO 203 } 204 205 void VMError::print_oom_reasons(outputStream* st) { 206 st->print_cr("# Possible reasons:"); 207 st->print_cr("# The system is out of physical RAM or swap space"); 208 st->print_cr("# In 32 bit mode, the process size limit was hit"); 209 st->print_cr("# Possible solutions:"); 210 st->print_cr("# Reduce memory load on the system"); 211 st->print_cr("# Increase physical memory or swap space"); 212 st->print_cr("# Check if swap backing store is full"); 213 st->print_cr("# Use 64 bit Java on a 64 bit OS"); 214 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)"); 215 st->print_cr("# Decrease number of Java threads"); 216 st->print_cr("# Decrease Java thread stack sizes (-Xss)"); 217 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize="); 218 st->print_cr("# This output file may be truncated or incomplete."); 219 } 220 221 const char* VMError::gc_mode() { 222 if (UseG1GC) return "g1 gc"; 223 if (UseParallelGC) return "parallel gc"; 224 if (UseConcMarkSweepGC) return "concurrent mark sweep gc"; 225 if (UseSerialGC) return "serial gc"; 226 return "ERROR in GC mode"; 227 } 228 229 // This is the main function to report a fatal error. Only one thread can 230 // call this function, so we don't need to worry about MT-safety. But it's 231 // possible that the error handler itself may crash or die on an internal 232 // error, for example, when the stack/heap is badly damaged. We must be 233 // able to handle recursive errors that happen inside error handler. 234 // 235 // Error reporting is done in several steps. If a crash or internal error 236 // occurred when reporting an error, the nested signal/exception handler 237 // can skip steps that are already (or partially) done. Error reporting will 238 // continue from the next step. This allows us to retrieve and print 239 // information that may be unsafe to get after a fatal error. If it happens, 240 // you may find nested report_and_die() frames when you look at the stack 241 // in a debugger. 242 // 243 // In general, a hang in error handler is much worse than a crash or internal 244 // error, as it's harder to recover from a hang. Deadlock can happen if we 245 // try to grab a lock that is already owned by current thread, or if the 246 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the 247 // error handler and all the functions it called should avoid grabbing any 248 // lock. An important thing to notice is that memory allocation needs a lock. 249 // 250 // We should avoid using large stack allocated buffers. Many errors happen 251 // when stack space is already low. Making things even worse is that there 252 // could be nested report_and_die() calls on stack (see above). Only one 253 // thread can report error, so large buffers are statically allocated in data 254 // segment. 255 256 int VMError::_current_step; 257 const char* VMError::_current_step_info; 258 259 void VMError::report(outputStream* st, bool _verbose) { 260 261 # define BEGIN if (_current_step == 0) { _current_step = 1; 262 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s; 263 # define END } 264 265 // don't allocate large buffer on stack 266 static char buf[O_BUFLEN]; 267 268 BEGIN 269 270 STEP(10, "(printing fatal error message)") 271 272 st->print_cr("#"); 273 if (should_report_bug(_id)) { 274 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:"); 275 } else { 276 st->print_cr("# There is insufficient memory for the Java " 277 "Runtime Environment to continue."); 278 } 279 280 #ifndef PRODUCT 281 // Error handler self tests 282 283 // test secondary error handling. Test it twice, to test that resetting 284 // error handler after a secondary crash works. 285 STEP(20, "(test secondary crash 1)") 286 if (_verbose && TestCrashInErrorHandler != 0) { 287 st->print_cr("Will crash now (TestCrashInErrorHandler=%d)...", 288 TestCrashInErrorHandler); 289 controlled_crash(TestCrashInErrorHandler); 290 } 291 292 STEP(30, "(test secondary crash 2)") 293 if (_verbose && TestCrashInErrorHandler != 0) { 294 st->print_cr("Will crash now (TestCrashInErrorHandler=%d)...", 295 TestCrashInErrorHandler); 296 controlled_crash(TestCrashInErrorHandler); 297 } 298 299 STEP(40, "(test safefetch in error handler)") 300 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice 301 // to test that resetting the signal handler works correctly. 302 if (_verbose && TestSafeFetchInErrorHandler) { 303 st->print_cr("Will test SafeFetch..."); 304 if (CanUseSafeFetch32()) { 305 int* const invalid_pointer = (int*) get_segfault_address(); 306 const int x = 0x76543210; 307 int i1 = SafeFetch32(invalid_pointer, x); 308 int i2 = SafeFetch32(invalid_pointer, x); 309 if (i1 == x && i2 == x) { 310 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern 311 } else { 312 st->print_cr("??"); 313 } 314 } else { 315 st->print_cr("not possible; skipped."); 316 } 317 } 318 #endif // PRODUCT 319 320 STEP(50, "(printing type of error)") 321 322 switch(_id) { 323 case OOM_MALLOC_ERROR: 324 case OOM_MMAP_ERROR: 325 if (_size) { 326 st->print("# Native memory allocation "); 327 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " : 328 "(mmap) failed to map "); 329 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size); 330 st->print("%s", buf); 331 st->print(" bytes"); 332 if (strlen(_detail_msg) > 0) { 333 st->print(" for "); 334 st->print("%s", _detail_msg); 335 } 336 st->cr(); 337 } else { 338 if (strlen(_detail_msg) > 0) { 339 st->print("# "); 340 st->print_cr("%s", _detail_msg); 341 } 342 } 343 // In error file give some solutions 344 if (_verbose) { 345 print_oom_reasons(st); 346 } else { 347 return; // that's enough for the screen 348 } 349 break; 350 case INTERNAL_ERROR: 351 default: 352 break; 353 } 354 355 STEP(60, "(printing exception/signal name)") 356 357 st->print_cr("#"); 358 st->print("# "); 359 // Is it an OS exception/signal? 360 if (os::exception_name(_id, buf, sizeof(buf))) { 361 st->print("%s", buf); 362 st->print(" (0x%x)", _id); // signal number 363 st->print(" at pc=" PTR_FORMAT, _pc); 364 } else { 365 if (should_report_bug(_id)) { 366 st->print("Internal Error"); 367 } else { 368 st->print("Out of Memory Error"); 369 } 370 if (_filename != NULL && _lineno > 0) { 371 #ifdef PRODUCT 372 // In product mode chop off pathname? 373 char separator = os::file_separator()[0]; 374 const char *p = strrchr(_filename, separator); 375 const char *file = p ? p+1 : _filename; 376 #else 377 const char *file = _filename; 378 #endif 379 st->print(" (%s:%d)", file, _lineno); 380 } else { 381 st->print(" (0x%x)", _id); 382 } 383 } 384 385 STEP(70, "(printing current thread and pid)") 386 387 // process id, thread id 388 st->print(", pid=%d", os::current_process_id()); 389 st->print(", tid=" UINTX_FORMAT, os::current_thread_id()); 390 st->cr(); 391 392 STEP(80, "(printing error message)") 393 394 if (should_report_bug(_id)) { // already printed the message. 395 // error message 396 if (strlen(_detail_msg) > 0) { 397 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg); 398 } else if (_message) { 399 st->print_cr("# Error: %s", _message); 400 } 401 } 402 403 STEP(90, "(printing Java version string)") 404 405 // VM version 406 st->print_cr("#"); 407 JDK_Version::current().to_string(buf, sizeof(buf)); 408 const char* runtime_name = JDK_Version::runtime_name() != NULL ? 409 JDK_Version::runtime_name() : ""; 410 const char* runtime_version = JDK_Version::runtime_version() != NULL ? 411 JDK_Version::runtime_version() : ""; 412 st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version); 413 // This is the long version with some default settings added 414 st->print_cr("# Java VM: %s (%s, %s%s%s, %s, %s)", 415 Abstract_VM_Version::vm_name(), 416 Abstract_VM_Version::vm_release(), 417 Abstract_VM_Version::vm_info_string(), 418 TieredCompilation ? ", tiered" : "", 419 UseCompressedOops ? ", compressed oops" : "", 420 gc_mode(), 421 Abstract_VM_Version::vm_platform_string() 422 ); 423 424 STEP(100, "(printing problematic frame)") 425 426 // Print current frame if we have a context (i.e. it's a crash) 427 if (_context) { 428 st->print_cr("# Problematic frame:"); 429 st->print("# "); 430 frame fr = os::fetch_frame_from_context(_context); 431 fr.print_on_error(st, buf, sizeof(buf)); 432 st->cr(); 433 st->print_cr("#"); 434 } 435 436 STEP(110, "(printing core file information)") 437 st->print("# "); 438 if (CreateCoredumpOnCrash) { 439 if (coredump_status) { 440 st->print("Core dump will be written. Default location: %s", coredump_message); 441 } else { 442 st->print("No core dump will be written. %s", coredump_message); 443 } 444 } else { 445 st->print("CreateCoredumpOnCrash turned off, no core file dumped"); 446 } 447 st->cr(); 448 st->print_cr("#"); 449 450 STEP(120, "(printing bug submit message)") 451 452 if (should_report_bug(_id) && _verbose) { 453 print_bug_submit_message(st, _thread); 454 } 455 456 STEP(130, "(printing summary)" ) 457 458 if (_verbose) { 459 st->cr(); 460 st->print_cr("--------------- S U M M A R Y ------------"); 461 st->cr(); 462 } 463 464 STEP(140, "(printing VM option summary)" ) 465 466 if (_verbose) { 467 // VM options 468 Arguments::print_summary_on(st); 469 st->cr(); 470 } 471 472 STEP(150, "(printing summary machine and OS info)") 473 474 if (_verbose) { 475 os::print_summary_info(st, buf, sizeof(buf)); 476 } 477 478 479 STEP(160, "(printing date and time)" ) 480 481 if (_verbose) { 482 os::print_date_and_time(st, buf, sizeof(buf)); 483 } 484 485 STEP(170, "(printing thread)" ) 486 487 if (_verbose) { 488 st->cr(); 489 st->print_cr("--------------- T H R E A D ---------------"); 490 st->cr(); 491 } 492 493 STEP(180, "(printing current thread)" ) 494 495 // current thread 496 if (_verbose) { 497 if (_thread) { 498 st->print("Current thread (" PTR_FORMAT "): ", _thread); 499 _thread->print_on_error(st, buf, sizeof(buf)); 500 st->cr(); 501 } else { 502 st->print_cr("Current thread is native thread"); 503 } 504 st->cr(); 505 } 506 507 STEP(190, "(printing current compile task)" ) 508 509 if (_verbose && _thread && _thread->is_Compiler_thread()) { 510 CompilerThread* t = (CompilerThread*)_thread; 511 if (t->task()) { 512 st->cr(); 513 st->print_cr("Current CompileTask:"); 514 t->task()->print_line_on_error(st, buf, sizeof(buf)); 515 st->cr(); 516 } 517 } 518 519 520 STEP(200, "(printing stack bounds)" ) 521 522 if (_verbose) { 523 st->print("Stack: "); 524 525 address stack_top; 526 size_t stack_size; 527 528 if (_thread) { 529 stack_top = _thread->stack_base(); 530 stack_size = _thread->stack_size(); 531 } else { 532 stack_top = os::current_stack_base(); 533 stack_size = os::current_stack_size(); 534 } 535 536 address stack_bottom = stack_top - stack_size; 537 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top); 538 539 frame fr = _context ? os::fetch_frame_from_context(_context) 540 : os::current_frame(); 541 542 if (fr.sp()) { 543 st->print(", sp=" PTR_FORMAT, fr.sp()); 544 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024); 545 st->print(", free space=" SIZE_FORMAT "k", free_stack_size); 546 } 547 548 st->cr(); 549 } 550 551 STEP(210, "(printing native stack)" ) 552 553 if (_verbose) { 554 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) { 555 // We have printed the native stack in platform-specific code 556 // Windows/x64 needs special handling. 557 } else { 558 frame fr = _context ? os::fetch_frame_from_context(_context) 559 : os::current_frame(); 560 561 print_native_stack(st, fr, _thread, buf, sizeof(buf)); 562 } 563 } 564 565 STEP(220, "(printing Java stack)" ) 566 567 if (_verbose && _thread && _thread->is_Java_thread()) { 568 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf)); 569 } 570 571 STEP(230, "(printing target Java thread stack)" ) 572 573 // printing Java thread stack trace if it is involved in GC crash 574 if (_verbose && _thread && (_thread->is_Named_thread())) { 575 JavaThread* jt = ((NamedThread *)_thread)->processed_thread(); 576 if (jt != NULL) { 577 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id()); 578 print_stack_trace(st, jt, buf, sizeof(buf), true); 579 } 580 } 581 582 STEP(240, "(printing siginfo)" ) 583 584 // signal no, signal code, address that caused the fault 585 if (_verbose && _siginfo) { 586 st->cr(); 587 os::print_siginfo(st, _siginfo); 588 st->cr(); 589 } 590 591 STEP(250, "(printing register info)") 592 593 // decode register contents if possible 594 if (_verbose && _context && Universe::is_fully_initialized()) { 595 os::print_register_info(st, _context); 596 st->cr(); 597 } 598 599 STEP(260, "(printing registers, top of stack, instructions near pc)") 600 601 // registers, top of stack, instructions near pc 602 if (_verbose && _context) { 603 os::print_context(st, _context); 604 st->cr(); 605 } 606 607 STEP(270, "(printing VM operation)" ) 608 609 if (_verbose && _thread && _thread->is_VM_thread()) { 610 VMThread* t = (VMThread*)_thread; 611 VM_Operation* op = t->vm_operation(); 612 if (op) { 613 op->print_on_error(st); 614 st->cr(); 615 st->cr(); 616 } 617 } 618 619 STEP(280, "(printing process)" ) 620 621 if (_verbose) { 622 st->cr(); 623 st->print_cr("--------------- P R O C E S S ---------------"); 624 st->cr(); 625 } 626 627 STEP(290, "(printing all threads)" ) 628 629 // all threads 630 if (_verbose && _thread) { 631 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 632 st->cr(); 633 } 634 635 STEP(300, "(printing VM state)" ) 636 637 if (_verbose) { 638 // Safepoint state 639 st->print("VM state:"); 640 641 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 642 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 643 else st->print("not at safepoint"); 644 645 // Also see if error occurred during initialization or shutdown 646 if (!Universe::is_fully_initialized()) { 647 st->print(" (not fully initialized)"); 648 } else if (VM_Exit::vm_exited()) { 649 st->print(" (shutting down)"); 650 } else { 651 st->print(" (normal execution)"); 652 } 653 st->cr(); 654 st->cr(); 655 } 656 657 STEP(310, "(printing owned locks on error)" ) 658 659 // mutexes/monitors that currently have an owner 660 if (_verbose) { 661 print_owned_locks_on_error(st); 662 st->cr(); 663 } 664 665 STEP(320, "(printing number of OutOfMemoryError and StackOverflow exceptions)") 666 667 if (_verbose && Exceptions::has_exception_counts()) { 668 st->print_cr("OutOfMemory and StackOverflow Exception counts:"); 669 Exceptions::print_exception_counts_on_error(st); 670 st->cr(); 671 } 672 673 STEP(330, "(printing compressed oops mode") 674 675 if (_verbose && UseCompressedOops) { 676 Universe::print_compressed_oops_mode(st); 677 if (UseCompressedClassPointers) { 678 Metaspace::print_compressed_class_space(st); 679 } 680 st->cr(); 681 } 682 683 STEP(340, "(printing heap information)" ) 684 685 if (_verbose && Universe::is_fully_initialized()) { 686 Universe::heap()->print_on_error(st); 687 st->cr(); 688 689 st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page()); 690 st->cr(); 691 } 692 693 STEP(350, "(printing code cache information)" ) 694 695 if (_verbose && Universe::is_fully_initialized()) { 696 // print code cache information before vm abort 697 CodeCache::print_summary(st); 698 st->cr(); 699 } 700 701 STEP(360, "(printing ring buffers)" ) 702 703 if (_verbose) { 704 Events::print_all(st); 705 st->cr(); 706 } 707 708 STEP(370, "(printing dynamic libraries)" ) 709 710 if (_verbose) { 711 // dynamic libraries, or memory map 712 os::print_dll_info(st); 713 st->cr(); 714 } 715 716 STEP(380, "(printing VM options)" ) 717 718 if (_verbose) { 719 // VM options 720 Arguments::print_on(st); 721 st->cr(); 722 } 723 724 STEP(390, "(printing warning if internal testing API used)" ) 725 726 if (WhiteBox::used()) { 727 st->print_cr("Unsupported internal testing APIs have been used."); 728 st->cr(); 729 } 730 731 STEP(400, "(printing all environment variables)" ) 732 733 if (_verbose) { 734 os::print_environment_variables(st, env_list); 735 st->cr(); 736 } 737 738 STEP(410, "(printing signal handlers)" ) 739 740 if (_verbose) { 741 os::print_signal_handlers(st, buf, sizeof(buf)); 742 st->cr(); 743 } 744 745 STEP(420, "(Native Memory Tracking)" ) 746 if (_verbose) { 747 MemTracker::error_report(st); 748 } 749 750 STEP(430, "(printing system)" ) 751 752 if (_verbose) { 753 st->cr(); 754 st->print_cr("--------------- S Y S T E M ---------------"); 755 st->cr(); 756 } 757 758 STEP(440, "(printing OS information)" ) 759 760 if (_verbose) { 761 os::print_os_info(st); 762 st->cr(); 763 } 764 765 STEP(450, "(printing CPU info)" ) 766 if (_verbose) { 767 os::print_cpu_info(st, buf, sizeof(buf)); 768 st->cr(); 769 } 770 771 STEP(460, "(printing memory info)" ) 772 773 if (_verbose) { 774 os::print_memory_info(st); 775 st->cr(); 776 } 777 778 STEP(470, "(printing internal vm info)" ) 779 780 if (_verbose) { 781 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 782 st->cr(); 783 } 784 785 // print a defined marker to show that error handling finished correctly. 786 STEP(480, "(printing end marker)" ) 787 788 if (_verbose) { 789 st->print_cr("END."); 790 } 791 792 END 793 794 # undef BEGIN 795 # undef STEP 796 # undef END 797 } 798 799 volatile jlong VMError::first_error_tid = -1; 800 801 // An error could happen before tty is initialized or after it has been 802 // destroyed. Here we use a very simple unbuffered fdStream for printing. 803 // Only out.print_raw() and out.print_raw_cr() should be used, as other 804 // printing methods need to allocate large buffer on stack. To format a 805 // string, use jio_snprintf() with a static buffer or use staticBufferStream. 806 fdStream VMError::out(defaultStream::output_fd()); 807 fdStream VMError::log; // error log used by VMError::report_and_die() 808 809 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */ 810 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) { 811 int fd = -1; 812 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) { 813 // the O_EXCL flag will cause the open to fail if the file exists 814 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666); 815 } 816 return fd; 817 } 818 819 /** 820 * Construct file name for a log file and return it's file descriptor. 821 * Name and location depends on pattern, default_pattern params and access 822 * permissions. 823 */ 824 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) { 825 int fd = -1; 826 827 // If possible, use specified pattern to construct log file name 828 if (pattern != NULL) { 829 fd = expand_and_open(pattern, buf, buflen, 0); 830 } 831 832 // Either user didn't specify, or the user's location failed, 833 // so use the default name in the current directory 834 if (fd == -1) { 835 const char* cwd = os::get_current_directory(buf, buflen); 836 if (cwd != NULL) { 837 size_t pos = strlen(cwd); 838 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator()); 839 pos += fsep_len; 840 if (fsep_len > 0) { 841 fd = expand_and_open(default_pattern, buf, buflen, pos); 842 } 843 } 844 } 845 846 // try temp directory if it exists. 847 if (fd == -1) { 848 const char* tmpdir = os::get_temp_directory(); 849 if (tmpdir != NULL && strlen(tmpdir) > 0) { 850 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator()); 851 if (pos > 0) { 852 fd = expand_and_open(default_pattern, buf, buflen, pos); 853 } 854 } 855 } 856 857 return fd; 858 } 859 860 int VMError::_id; 861 const char* VMError::_message; 862 char VMError::_detail_msg[1024]; 863 Thread* VMError::_thread; 864 address VMError::_pc; 865 void* VMError::_siginfo; 866 void* VMError::_context; 867 const char* VMError::_filename; 868 int VMError::_lineno; 869 size_t VMError::_size; 870 871 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, 872 void* context, const char* detail_fmt, ...) 873 { 874 va_list detail_args; 875 va_start(detail_args, detail_fmt); 876 report_and_die(sig, NULL, detail_fmt, detail_args, thread, pc, siginfo, context, NULL, 0, 0); 877 va_end(detail_args); 878 } 879 880 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) 881 { 882 report_and_die(thread, sig, pc, siginfo, context, "%s", ""); 883 } 884 885 void VMError::report_and_die(const char* message, const char* detail_fmt, ...) 886 { 887 va_list detail_args; 888 va_start(detail_args, detail_fmt); 889 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, NULL, NULL, NULL, NULL, NULL, 0, 0); 890 va_end(detail_args); 891 } 892 893 void VMError::report_and_die(const char* message) 894 { 895 report_and_die(message, "%s", ""); 896 } 897 898 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, const char* message, 899 const char* detail_fmt, va_list detail_args) 900 { 901 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, 0); 902 } 903 904 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, size_t size, 905 VMErrorType vm_err_type, const char* detail_fmt, va_list detail_args) { 906 report_and_die(vm_err_type, NULL, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, size); 907 } 908 909 void VMError::report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args, 910 Thread* thread, address pc, void* siginfo, void* context, const char* filename, 911 int lineno, size_t size) 912 { 913 // Don't allocate large buffer on stack 914 static char buffer[O_BUFLEN]; 915 916 // How many errors occurred in error handler when reporting first_error. 917 static int recursive_error_count; 918 919 // We will first print a brief message to standard out (verbose = false), 920 // then save detailed information in log file (verbose = true). 921 static bool out_done = false; // done printing to standard out 922 static bool log_done = false; // done saving error log 923 static bool transmit_report_done = false; // done error reporting 924 925 if (SuppressFatalErrorMessage) { 926 os::abort(CreateCoredumpOnCrash); 927 } 928 jlong mytid = os::current_thread_id(); 929 if (first_error_tid == -1 && 930 Atomic::cmpxchg(mytid, &first_error_tid, -1) == -1) { 931 932 _id = id; 933 _message = message; 934 _thread = thread; 935 _pc = pc; 936 _siginfo = siginfo; 937 _context = context; 938 _filename = filename; 939 _lineno = lineno; 940 _size = size; 941 jio_vsnprintf(_detail_msg, sizeof(_detail_msg), detail_fmt, detail_args); 942 943 // first time 944 set_error_reported(); 945 946 if (ShowMessageBoxOnError || PauseAtExit) { 947 show_message_box(buffer, sizeof(buffer)); 948 949 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 950 // WatcherThread can kill JVM if the error handler hangs. 951 ShowMessageBoxOnError = false; 952 } 953 954 os::check_dump_limit(buffer, sizeof(buffer)); 955 956 // reset signal handlers or exception filter; make sure recursive crashes 957 // are handled properly. 958 reset_signal_handlers(); 959 960 } else { 961 // If UseOsErrorReporting we call this for each level of the call stack 962 // while searching for the exception handler. Only the first level needs 963 // to be reported. 964 if (UseOSErrorReporting && log_done) return; 965 966 // This is not the first error, see if it happened in a different thread 967 // or in the same thread during error reporting. 968 if (first_error_tid != mytid) { 969 char msgbuf[64]; 970 jio_snprintf(msgbuf, sizeof(msgbuf), 971 "[thread " INT64_FORMAT " also had an error]", 972 mytid); 973 out.print_raw_cr(msgbuf); 974 975 // error reporting is not MT-safe, block current thread 976 os::infinite_sleep(); 977 978 } else { 979 if (recursive_error_count++ > 30) { 980 out.print_raw_cr("[Too many errors, abort]"); 981 os::die(); 982 } 983 984 jio_snprintf(buffer, sizeof(buffer), 985 "[error occurred during error reporting %s, id 0x%x]", 986 _current_step_info, _id); 987 if (log.is_open()) { 988 log.cr(); 989 log.print_raw_cr(buffer); 990 log.cr(); 991 } else { 992 out.cr(); 993 out.print_raw_cr(buffer); 994 out.cr(); 995 } 996 } 997 } 998 999 // print to screen 1000 if (!out_done) { 1001 staticBufferStream sbs(buffer, sizeof(buffer), &out); 1002 report(&sbs, false); 1003 1004 out_done = true; 1005 1006 _current_step = 0; 1007 _current_step_info = ""; 1008 } 1009 1010 // print to error log file 1011 if (!log_done) { 1012 // see if log file is already open 1013 if (!log.is_open()) { 1014 // open log file 1015 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer)); 1016 if (fd != -1) { 1017 out.print_raw("# An error report file with more information is saved as:\n# "); 1018 out.print_raw_cr(buffer); 1019 1020 log.set_fd(fd); 1021 } else { 1022 out.print_raw_cr("# Can not save log file, dump to screen.."); 1023 log.set_fd(defaultStream::output_fd()); 1024 /* Error reporting currently needs dumpfile. 1025 * Maybe implement direct streaming in the future.*/ 1026 transmit_report_done = true; 1027 } 1028 } 1029 1030 staticBufferStream sbs(buffer, O_BUFLEN, &log); 1031 report(&sbs, true); 1032 _current_step = 0; 1033 _current_step_info = ""; 1034 1035 // Run error reporting to determine whether or not to report the crash. 1036 if (!transmit_report_done && should_report_bug(_id)) { 1037 transmit_report_done = true; 1038 const int fd2 = ::dup(log.fd()); 1039 FILE* const hs_err = ::fdopen(fd2, "r"); 1040 if (NULL != hs_err) { 1041 ErrorReporter er; 1042 er.call(hs_err, buffer, O_BUFLEN); 1043 } 1044 ::fclose(hs_err); 1045 } 1046 1047 if (log.fd() != defaultStream::output_fd()) { 1048 close(log.fd()); 1049 } 1050 1051 log.set_fd(-1); 1052 log_done = true; 1053 } 1054 1055 1056 static bool skip_OnError = false; 1057 if (!skip_OnError && OnError && OnError[0]) { 1058 skip_OnError = true; 1059 1060 out.print_raw_cr("#"); 1061 out.print_raw ("# -XX:OnError=\""); 1062 out.print_raw (OnError); 1063 out.print_raw_cr("\""); 1064 1065 char* cmd; 1066 const char* ptr = OnError; 1067 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1068 out.print_raw ("# Executing "); 1069 #if defined(LINUX) || defined(_ALLBSD_SOURCE) 1070 out.print_raw ("/bin/sh -c "); 1071 #elif defined(SOLARIS) 1072 out.print_raw ("/usr/bin/sh -c "); 1073 #endif 1074 out.print_raw ("\""); 1075 out.print_raw (cmd); 1076 out.print_raw_cr("\" ..."); 1077 1078 if (os::fork_and_exec(cmd) < 0) { 1079 out.print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1080 } 1081 } 1082 1083 // done with OnError 1084 OnError = NULL; 1085 } 1086 1087 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay 1088 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) { 1089 skip_replay = true; 1090 ciEnv* env = ciEnv::current(); 1091 if (env != NULL) { 1092 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer)); 1093 if (fd != -1) { 1094 FILE* replay_data_file = os::open(fd, "w"); 1095 if (replay_data_file != NULL) { 1096 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1097 env->dump_replay_data_unsafe(&replay_data_stream); 1098 out.print_raw("#\n# Compiler replay data is saved as:\n# "); 1099 out.print_raw_cr(buffer); 1100 } else { 1101 out.print_raw("#\n# Can't open file to dump replay data. Error: "); 1102 out.print_raw_cr(strerror(os::get_last_error())); 1103 } 1104 } 1105 } 1106 } 1107 1108 static bool skip_bug_url = !should_report_bug(_id); 1109 if (!skip_bug_url) { 1110 skip_bug_url = true; 1111 1112 out.print_raw_cr("#"); 1113 print_bug_submit_message(&out, _thread); 1114 } 1115 1116 if (!UseOSErrorReporting) { 1117 // os::abort() will call abort hooks, try it first. 1118 static bool skip_os_abort = false; 1119 if (!skip_os_abort) { 1120 skip_os_abort = true; 1121 bool dump_core = should_report_bug(_id); 1122 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context); 1123 } 1124 1125 // if os::abort() doesn't abort, try os::die(); 1126 os::die(); 1127 } 1128 } 1129 1130 /* 1131 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 1132 * ensures utilities such as jmap can observe the process is a consistent state. 1133 */ 1134 class VM_ReportJavaOutOfMemory : public VM_Operation { 1135 private: 1136 const char* _message; 1137 public: 1138 VM_ReportJavaOutOfMemory(const char* message) { _message = message; } 1139 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 1140 void doit(); 1141 }; 1142 1143 void VM_ReportJavaOutOfMemory::doit() { 1144 // Don't allocate large buffer on stack 1145 static char buffer[O_BUFLEN]; 1146 1147 tty->print_cr("#"); 1148 tty->print_cr("# java.lang.OutOfMemoryError: %s", _message); 1149 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 1150 1151 // make heap parsability 1152 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 1153 1154 char* cmd; 1155 const char* ptr = OnOutOfMemoryError; 1156 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1157 tty->print("# Executing "); 1158 #if defined(LINUX) 1159 tty->print ("/bin/sh -c "); 1160 #elif defined(SOLARIS) 1161 tty->print ("/usr/bin/sh -c "); 1162 #endif 1163 tty->print_cr("\"%s\"...", cmd); 1164 1165 if (os::fork_and_exec(cmd) < 0) { 1166 tty->print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1167 } 1168 } 1169 } 1170 1171 void VMError::report_java_out_of_memory(const char* message) { 1172 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { 1173 MutexLocker ml(Heap_lock); 1174 VM_ReportJavaOutOfMemory op(message); 1175 VMThread::execute(&op); 1176 } 1177 }