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 // Fatal error handler for internal errors and crashes. 75 // 76 // The default behavior of fatal error handler is to print a brief message 77 // to standard out (defaultStream::output_fd()), then save detailed information 78 // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple 79 // threads are having troubles at the same time, only one error is reported. 80 // The thread that is reporting error will abort VM when it is done, all other 81 // threads are blocked forever inside report_and_die(). 82 83 // Constructor for crashes 84 VMError::VMError(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) { 85 _thread = thread; 86 _id = sig; 87 _pc = pc; 88 _siginfo = siginfo; 89 _context = context; 90 91 _verbose = false; 92 _current_step = 0; 93 _current_step_info = NULL; 94 95 _message = NULL; 96 _detail_msg = NULL; 97 _filename = NULL; 98 _lineno = 0; 99 100 _size = 0; 101 } 102 103 // Constructor for internal errors 104 VMError::VMError(Thread* thread, const char* filename, int lineno, 105 const char* message, const char * detail_msg) 106 { 107 _thread = thread; 108 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal 109 _filename = filename; 110 _lineno = lineno; 111 _message = message; 112 _detail_msg = detail_msg; 113 114 _verbose = false; 115 _current_step = 0; 116 _current_step_info = NULL; 117 118 _pc = NULL; 119 _siginfo = NULL; 120 _context = NULL; 121 122 _size = 0; 123 } 124 125 // Constructor for OOM errors 126 VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size, 127 VMErrorType vm_err_type, const char* message) { 128 _thread = thread; 129 _id = vm_err_type; // Value that's not an OS exception/signal 130 _filename = filename; 131 _lineno = lineno; 132 _message = message; 133 _detail_msg = NULL; 134 135 _verbose = false; 136 _current_step = 0; 137 _current_step_info = NULL; 138 139 _pc = NULL; 140 _siginfo = NULL; 141 _context = NULL; 142 143 _size = size; 144 } 145 146 147 // Constructor for non-fatal errors 148 VMError::VMError(const char* message) { 149 _thread = NULL; 150 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal 151 _filename = NULL; 152 _lineno = 0; 153 _message = message; 154 _detail_msg = NULL; 155 156 _verbose = false; 157 _current_step = 0; 158 _current_step_info = NULL; 159 160 _pc = NULL; 161 _siginfo = NULL; 162 _context = NULL; 163 164 _size = 0; 165 } 166 167 // -XX:OnError=<string>, where <string> can be a list of commands, separated 168 // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by 169 // a single "%". Some examples: 170 // 171 // -XX:OnError="pmap %p" // show memory map 172 // -XX:OnError="gcore %p; dbx - %p" // dump core and launch debugger 173 // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com" 174 // -XX:OnError="kill -9 %p" // ?#!@# 175 176 // A simple parser for -XX:OnError, usage: 177 // ptr = OnError; 178 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL) 179 // ... ... 180 static char* next_OnError_command(char* buf, int buflen, const char** ptr) { 181 if (ptr == NULL || *ptr == NULL) return NULL; 182 183 const char* cmd = *ptr; 184 185 // skip leading blanks or ';' 186 while (*cmd == ' ' || *cmd == ';') cmd++; 187 188 if (*cmd == '\0') return NULL; 189 190 const char * cmdend = cmd; 191 while (*cmdend != '\0' && *cmdend != ';') cmdend++; 192 193 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen); 194 195 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1); 196 return buf; 197 } 198 199 200 static void print_bug_submit_message(outputStream *out, Thread *thread) { 201 if (out == NULL) return; 202 out->print_raw_cr("# If you would like to submit a bug report, please visit:"); 203 out->print_raw ("# "); 204 out->print_raw_cr(Arguments::java_vendor_url_bug()); 205 // If the crash is in native code, encourage user to submit a bug to the 206 // provider of that code. 207 if (thread && thread->is_Java_thread() && 208 !thread->is_hidden_from_external_view()) { 209 JavaThread* jt = (JavaThread*)thread; 210 if (jt->thread_state() == _thread_in_native) { 211 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug."); 212 } 213 } 214 out->print_raw_cr("#"); 215 } 216 217 bool VMError::coredump_status; 218 char VMError::coredump_message[O_BUFLEN]; 219 220 void VMError::record_coredump_status(const char* message, bool status) { 221 coredump_status = status; 222 strncpy(coredump_message, message, sizeof(coredump_message)); 223 coredump_message[sizeof(coredump_message)-1] = 0; 224 } 225 226 227 // Return a string to describe the error 228 char* VMError::error_string(char* buf, int buflen) { 229 char signame_buf[64]; 230 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf)); 231 232 if (signame) { 233 jio_snprintf(buf, buflen, 234 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" INTPTR_FORMAT, 235 signame, _id, _pc, 236 os::current_process_id(), os::current_thread_id()); 237 } else if (_filename != NULL && _lineno > 0) { 238 // skip directory names 239 char separator = os::file_separator()[0]; 240 const char *p = strrchr(_filename, separator); 241 int n = jio_snprintf(buf, buflen, 242 "Internal Error at %s:%d, pid=%d, tid=" INTPTR_FORMAT, 243 p ? p + 1 : _filename, _lineno, 244 os::current_process_id(), os::current_thread_id()); 245 if (n >= 0 && n < buflen && _message) { 246 if (_detail_msg) { 247 jio_snprintf(buf + n, buflen - n, "%s%s: %s", 248 os::line_separator(), _message, _detail_msg); 249 } else { 250 jio_snprintf(buf + n, buflen - n, "%sError: %s", 251 os::line_separator(), _message); 252 } 253 } 254 } else { 255 jio_snprintf(buf, buflen, 256 "Internal Error (0x%x), pid=%d, tid=" INTPTR_FORMAT, 257 _id, os::current_process_id(), os::current_thread_id()); 258 } 259 260 return buf; 261 } 262 263 void VMError::print_stack_trace(outputStream* st, JavaThread* jt, 264 char* buf, int buflen, bool verbose) { 265 #ifdef ZERO 266 if (jt->zero_stack()->sp() && jt->top_zero_frame()) { 267 // StackFrameStream uses the frame anchor, which may not have 268 // been set up. This can be done at any time in Zero, however, 269 // so if it hasn't been set up then we just set it up now and 270 // clear it again when we're done. 271 bool has_last_Java_frame = jt->has_last_Java_frame(); 272 if (!has_last_Java_frame) 273 jt->set_last_Java_frame(); 274 st->print("Java frames:"); 275 276 // If the top frame is a Shark frame and the frame anchor isn't 277 // set up then it's possible that the information in the frame 278 // is garbage: it could be from a previous decache, or it could 279 // simply have never been written. So we print a warning... 280 StackFrameStream sfs(jt); 281 if (!has_last_Java_frame && !sfs.is_done()) { 282 if (sfs.current()->zeroframe()->is_shark_frame()) { 283 st->print(" (TOP FRAME MAY BE JUNK)"); 284 } 285 } 286 st->cr(); 287 288 // Print the frames 289 for(int i = 0; !sfs.is_done(); sfs.next(), i++) { 290 sfs.current()->zero_print_on_error(i, st, buf, buflen); 291 st->cr(); 292 } 293 294 // Reset the frame anchor if necessary 295 if (!has_last_Java_frame) 296 jt->reset_last_Java_frame(); 297 } 298 #else 299 if (jt->has_last_Java_frame()) { 300 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)"); 301 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) { 302 sfs.current()->print_on_error(st, buf, buflen, verbose); 303 st->cr(); 304 } 305 } 306 #endif // ZERO 307 } 308 309 // This is the main function to report a fatal error. Only one thread can 310 // call this function, so we don't need to worry about MT-safety. But it's 311 // possible that the error handler itself may crash or die on an internal 312 // error, for example, when the stack/heap is badly damaged. We must be 313 // able to handle recursive errors that happen inside error handler. 314 // 315 // Error reporting is done in several steps. If a crash or internal error 316 // occurred when reporting an error, the nested signal/exception handler 317 // can skip steps that are already (or partially) done. Error reporting will 318 // continue from the next step. This allows us to retrieve and print 319 // information that may be unsafe to get after a fatal error. If it happens, 320 // you may find nested report_and_die() frames when you look at the stack 321 // in a debugger. 322 // 323 // In general, a hang in error handler is much worse than a crash or internal 324 // error, as it's harder to recover from a hang. Deadlock can happen if we 325 // try to grab a lock that is already owned by current thread, or if the 326 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the 327 // error handler and all the functions it called should avoid grabbing any 328 // lock. An important thing to notice is that memory allocation needs a lock. 329 // 330 // We should avoid using large stack allocated buffers. Many errors happen 331 // when stack space is already low. Making things even worse is that there 332 // could be nested report_and_die() calls on stack (see above). Only one 333 // thread can report error, so large buffers are statically allocated in data 334 // segment. 335 336 void VMError::report(outputStream* st) { 337 # define BEGIN if (_current_step == 0) { _current_step = 1; 338 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s; 339 # define END } 340 341 // don't allocate large buffer on stack 342 static char buf[O_BUFLEN]; 343 344 BEGIN 345 346 STEP(10, "(printing fatal error message)") 347 348 st->print_cr("#"); 349 if (should_report_bug(_id)) { 350 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:"); 351 } else { 352 st->print_cr("# There is insufficient memory for the Java " 353 "Runtime Environment to continue."); 354 } 355 356 #ifndef PRODUCT 357 // Error handler self tests 358 359 // test secondary error handling. Test it twice, to test that resetting 360 // error handler after a secondary crash works. 361 STEP(11, "(test secondary crash 1)") 362 if (_verbose && TestCrashInErrorHandler != 0) { 363 st->print_cr("Will crash now (TestCrashInErrorHandler=%d)...", 364 TestCrashInErrorHandler); 365 controlled_crash(TestCrashInErrorHandler); 366 } 367 368 STEP(12, "(test secondary crash 2)") 369 if (_verbose && TestCrashInErrorHandler != 0) { 370 st->print_cr("Will crash now (TestCrashInErrorHandler=%d)...", 371 TestCrashInErrorHandler); 372 controlled_crash(TestCrashInErrorHandler); 373 } 374 375 STEP(13, "(test safefetch in error handler)") 376 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice 377 // to test that resetting the signal handler works correctly. 378 if (_verbose && TestSafeFetchInErrorHandler) { 379 st->print_cr("Will test SafeFetch..."); 380 if (CanUseSafeFetch32()) { 381 int* const invalid_pointer = (int*) get_segfault_address(); 382 const int x = 0x76543210; 383 int i1 = SafeFetch32(invalid_pointer, x); 384 int i2 = SafeFetch32(invalid_pointer, x); 385 if (i1 == x && i2 == x) { 386 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern 387 } else { 388 st->print_cr("??"); 389 } 390 } else { 391 st->print_cr("not possible; skipped."); 392 } 393 } 394 #endif // PRODUCT 395 396 STEP(15, "(printing type of error)") 397 398 switch(_id) { 399 case OOM_MALLOC_ERROR: 400 case OOM_MMAP_ERROR: 401 if (_size) { 402 st->print("# Native memory allocation "); 403 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " : 404 "(mmap) failed to map "); 405 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size); 406 st->print("%s", buf); 407 st->print(" bytes"); 408 if (_message != NULL) { 409 st->print(" for "); 410 st->print("%s", _message); 411 } 412 st->cr(); 413 } else { 414 if (_message != NULL) 415 st->print("# "); 416 st->print_cr("%s", _message); 417 } 418 // In error file give some solutions 419 if (_verbose) { 420 st->print_cr("# Possible reasons:"); 421 st->print_cr("# The system is out of physical RAM or swap space"); 422 st->print_cr("# In 32 bit mode, the process size limit was hit"); 423 st->print_cr("# Possible solutions:"); 424 st->print_cr("# Reduce memory load on the system"); 425 st->print_cr("# Increase physical memory or swap space"); 426 st->print_cr("# Check if swap backing store is full"); 427 st->print_cr("# Use 64 bit Java on a 64 bit OS"); 428 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)"); 429 st->print_cr("# Decrease number of Java threads"); 430 st->print_cr("# Decrease Java thread stack sizes (-Xss)"); 431 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize="); 432 st->print_cr("# This output file may be truncated or incomplete."); 433 } else { 434 return; // that's enough for the screen 435 } 436 break; 437 case INTERNAL_ERROR: 438 default: 439 break; 440 } 441 442 STEP(20, "(printing exception/signal name)") 443 444 st->print_cr("#"); 445 st->print("# "); 446 // Is it an OS exception/signal? 447 if (os::exception_name(_id, buf, sizeof(buf))) { 448 st->print("%s", buf); 449 st->print(" (0x%x)", _id); // signal number 450 st->print(" at pc=" PTR_FORMAT, _pc); 451 } else { 452 if (should_report_bug(_id)) { 453 st->print("Internal Error"); 454 } else { 455 st->print("Out of Memory Error"); 456 } 457 if (_filename != NULL && _lineno > 0) { 458 #ifdef PRODUCT 459 // In product mode chop off pathname? 460 char separator = os::file_separator()[0]; 461 const char *p = strrchr(_filename, separator); 462 const char *file = p ? p+1 : _filename; 463 #else 464 const char *file = _filename; 465 #endif 466 st->print(" (%s:%d)", file, _lineno); 467 } else { 468 st->print(" (0x%x)", _id); 469 } 470 } 471 472 STEP(30, "(printing current thread and pid)") 473 474 // process id, thread id 475 st->print(", pid=%d", os::current_process_id()); 476 st->print(", tid=" INTPTR_FORMAT, os::current_thread_id()); 477 st->cr(); 478 479 STEP(40, "(printing error message)") 480 481 if (should_report_bug(_id)) { // already printed the message. 482 // error message 483 if (_detail_msg) { 484 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg); 485 } else if (_message) { 486 st->print_cr("# Error: %s", _message); 487 } 488 } 489 490 STEP(50, "(printing Java version string)") 491 492 // VM version 493 st->print_cr("#"); 494 JDK_Version::current().to_string(buf, sizeof(buf)); 495 const char* runtime_name = JDK_Version::runtime_name() != NULL ? 496 JDK_Version::runtime_name() : ""; 497 const char* runtime_version = JDK_Version::runtime_version() != NULL ? 498 JDK_Version::runtime_version() : ""; 499 st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version); 500 st->print_cr("# Java VM: %s (%s %s %s %s)", 501 Abstract_VM_Version::vm_name(), 502 Abstract_VM_Version::vm_release(), 503 Abstract_VM_Version::vm_info_string(), 504 Abstract_VM_Version::vm_platform_string(), 505 UseCompressedOops ? "compressed oops" : "" 506 ); 507 508 STEP(60, "(printing problematic frame)") 509 510 // Print current frame if we have a context (i.e. it's a crash) 511 if (_context) { 512 st->print_cr("# Problematic frame:"); 513 st->print("# "); 514 frame fr = os::fetch_frame_from_context(_context); 515 fr.print_on_error(st, buf, sizeof(buf)); 516 st->cr(); 517 st->print_cr("#"); 518 } 519 STEP(63, "(printing core file information)") 520 st->print("# "); 521 if (CreateCoredumpOnCrash) { 522 if (coredump_status) { 523 st->print("Core dump will be written. Default location: %s", coredump_message); 524 } else { 525 st->print("No core dump will be written. %s", coredump_message); 526 } 527 } else { 528 st->print("CreateCoredumpOnCrash turned off, no core file dumped"); 529 } 530 st->cr(); 531 st->print_cr("#"); 532 533 STEP(65, "(printing bug submit message)") 534 535 if (should_report_bug(_id) && _verbose) { 536 print_bug_submit_message(st, _thread); 537 } 538 539 STEP(70, "(printing thread)" ) 540 541 if (_verbose) { 542 st->cr(); 543 st->print_cr("--------------- T H R E A D ---------------"); 544 st->cr(); 545 } 546 547 STEP(80, "(printing current thread)" ) 548 549 // current thread 550 if (_verbose) { 551 if (_thread) { 552 st->print("Current thread (" PTR_FORMAT "): ", _thread); 553 _thread->print_on_error(st, buf, sizeof(buf)); 554 st->cr(); 555 } else { 556 st->print_cr("Current thread is native thread"); 557 } 558 st->cr(); 559 } 560 561 STEP(90, "(printing siginfo)" ) 562 563 // signal no, signal code, address that caused the fault 564 if (_verbose && _siginfo) { 565 os::print_siginfo(st, _siginfo); 566 st->cr(); 567 } 568 569 STEP(100, "(printing registers, top of stack, instructions near pc)") 570 571 // registers, top of stack, instructions near pc 572 if (_verbose && _context) { 573 os::print_context(st, _context); 574 st->cr(); 575 } 576 577 STEP(105, "(printing register info)") 578 579 // decode register contents if possible 580 if (_verbose && _context && Universe::is_fully_initialized()) { 581 os::print_register_info(st, _context); 582 st->cr(); 583 } 584 585 STEP(110, "(printing stack bounds)" ) 586 587 if (_verbose) { 588 st->print("Stack: "); 589 590 address stack_top; 591 size_t stack_size; 592 593 if (_thread) { 594 stack_top = _thread->stack_base(); 595 stack_size = _thread->stack_size(); 596 } else { 597 stack_top = os::current_stack_base(); 598 stack_size = os::current_stack_size(); 599 } 600 601 address stack_bottom = stack_top - stack_size; 602 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top); 603 604 frame fr = _context ? os::fetch_frame_from_context(_context) 605 : os::current_frame(); 606 607 if (fr.sp()) { 608 st->print(", sp=" PTR_FORMAT, fr.sp()); 609 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024); 610 st->print(", free space=" SIZE_FORMAT "k", free_stack_size); 611 } 612 613 st->cr(); 614 } 615 616 STEP(120, "(printing native stack)" ) 617 618 if (_verbose) { 619 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) { 620 // We have printed the native stack in platform-specific code 621 // Windows/x64 needs special handling. 622 } else { 623 frame fr = _context ? os::fetch_frame_from_context(_context) 624 : os::current_frame(); 625 626 print_native_stack(st, fr, _thread, buf, sizeof(buf)); 627 } 628 } 629 630 STEP(130, "(printing Java stack)" ) 631 632 if (_verbose && _thread && _thread->is_Java_thread()) { 633 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf)); 634 } 635 636 STEP(135, "(printing target Java thread stack)" ) 637 638 // printing Java thread stack trace if it is involved in GC crash 639 if (_verbose && _thread && (_thread->is_Named_thread())) { 640 JavaThread* jt = ((NamedThread *)_thread)->processed_thread(); 641 if (jt != NULL) { 642 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id()); 643 print_stack_trace(st, jt, buf, sizeof(buf), true); 644 } 645 } 646 647 STEP(140, "(printing VM operation)" ) 648 649 if (_verbose && _thread && _thread->is_VM_thread()) { 650 VMThread* t = (VMThread*)_thread; 651 VM_Operation* op = t->vm_operation(); 652 if (op) { 653 op->print_on_error(st); 654 st->cr(); 655 st->cr(); 656 } 657 } 658 659 STEP(150, "(printing current compile task)" ) 660 661 if (_verbose && _thread && _thread->is_Compiler_thread()) { 662 CompilerThread* t = (CompilerThread*)_thread; 663 if (t->task()) { 664 st->cr(); 665 st->print_cr("Current CompileTask:"); 666 t->task()->print_line_on_error(st, buf, sizeof(buf)); 667 st->cr(); 668 } 669 } 670 671 STEP(160, "(printing process)" ) 672 673 if (_verbose) { 674 st->cr(); 675 st->print_cr("--------------- P R O C E S S ---------------"); 676 st->cr(); 677 } 678 679 STEP(170, "(printing all threads)" ) 680 681 // all threads 682 if (_verbose && _thread) { 683 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 684 st->cr(); 685 } 686 687 STEP(175, "(printing VM state)" ) 688 689 if (_verbose) { 690 // Safepoint state 691 st->print("VM state:"); 692 693 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 694 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 695 else st->print("not at safepoint"); 696 697 // Also see if error occurred during initialization or shutdown 698 if (!Universe::is_fully_initialized()) { 699 st->print(" (not fully initialized)"); 700 } else if (VM_Exit::vm_exited()) { 701 st->print(" (shutting down)"); 702 } else { 703 st->print(" (normal execution)"); 704 } 705 st->cr(); 706 st->cr(); 707 } 708 709 STEP(180, "(printing owned locks on error)" ) 710 711 // mutexes/monitors that currently have an owner 712 if (_verbose) { 713 print_owned_locks_on_error(st); 714 st->cr(); 715 } 716 717 STEP(190, "(printing heap information)" ) 718 719 if (_verbose && Universe::is_fully_initialized()) { 720 Universe::heap()->print_on_error(st); 721 st->cr(); 722 723 st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page()); 724 st->cr(); 725 } 726 727 STEP(195, "(printing code cache information)" ) 728 729 if (_verbose && Universe::is_fully_initialized()) { 730 // print code cache information before vm abort 731 CodeCache::print_summary(st); 732 st->cr(); 733 } 734 735 STEP(200, "(printing ring buffers)" ) 736 737 if (_verbose) { 738 Events::print_all(st); 739 st->cr(); 740 } 741 742 STEP(205, "(printing dynamic libraries)" ) 743 744 if (_verbose) { 745 // dynamic libraries, or memory map 746 os::print_dll_info(st); 747 st->cr(); 748 } 749 750 STEP(210, "(printing VM options)" ) 751 752 if (_verbose) { 753 // VM options 754 Arguments::print_on(st); 755 st->cr(); 756 } 757 758 STEP(215, "(printing warning if internal testing API used)" ) 759 760 if (WhiteBox::used()) { 761 st->print_cr("Unsupported internal testing APIs have been used."); 762 st->cr(); 763 } 764 765 STEP(220, "(printing environment variables)" ) 766 767 if (_verbose) { 768 os::print_environment_variables(st, env_list); 769 st->cr(); 770 } 771 772 STEP(225, "(printing signal handlers)" ) 773 774 if (_verbose) { 775 os::print_signal_handlers(st, buf, sizeof(buf)); 776 st->cr(); 777 } 778 779 STEP(228, "(Native Memory Tracking)" ) 780 if (_verbose) { 781 MemTracker::error_report(st); 782 } 783 784 STEP(230, "" ) 785 786 if (_verbose) { 787 st->cr(); 788 st->print_cr("--------------- S Y S T E M ---------------"); 789 st->cr(); 790 } 791 792 STEP(240, "(printing OS information)" ) 793 794 if (_verbose) { 795 os::print_os_info(st); 796 st->cr(); 797 } 798 799 STEP(250, "(printing CPU info)" ) 800 if (_verbose) { 801 os::print_cpu_info(st); 802 st->cr(); 803 } 804 805 STEP(260, "(printing memory info)" ) 806 807 if (_verbose) { 808 os::print_memory_info(st); 809 st->cr(); 810 } 811 812 STEP(270, "(printing internal vm info)" ) 813 814 if (_verbose) { 815 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 816 st->cr(); 817 } 818 819 STEP(280, "(printing date and time)" ) 820 821 if (_verbose) { 822 os::print_date_and_time(st); 823 st->cr(); 824 } 825 826 #ifndef PRODUCT 827 // print a defined marker to show that error handling finished correctly. 828 STEP(290, "(printing end marker)" ) 829 830 if (_verbose) { 831 st->print_cr("END."); 832 } 833 #endif 834 835 END 836 837 # undef BEGIN 838 # undef STEP 839 # undef END 840 } 841 842 VMError* volatile VMError::first_error = NULL; 843 volatile jlong VMError::first_error_tid = -1; 844 845 // An error could happen before tty is initialized or after it has been 846 // destroyed. Here we use a very simple unbuffered fdStream for printing. 847 // Only out.print_raw() and out.print_raw_cr() should be used, as other 848 // printing methods need to allocate large buffer on stack. To format a 849 // string, use jio_snprintf() with a static buffer or use staticBufferStream. 850 fdStream VMError::out(defaultStream::output_fd()); 851 fdStream VMError::log; // error log used by VMError::report_and_die() 852 853 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */ 854 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) { 855 int fd = -1; 856 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) { 857 // the O_EXCL flag will cause the open to fail if the file exists 858 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666); 859 } 860 return fd; 861 } 862 863 /** 864 * Construct file name for a log file and return it's file descriptor. 865 * Name and location depends on pattern, default_pattern params and access 866 * permissions. 867 */ 868 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) { 869 int fd = -1; 870 871 // If possible, use specified pattern to construct log file name 872 if (pattern != NULL) { 873 fd = expand_and_open(pattern, buf, buflen, 0); 874 } 875 876 // Either user didn't specify, or the user's location failed, 877 // so use the default name in the current directory 878 if (fd == -1) { 879 const char* cwd = os::get_current_directory(buf, buflen); 880 if (cwd != NULL) { 881 size_t pos = strlen(cwd); 882 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator()); 883 pos += fsep_len; 884 if (fsep_len > 0) { 885 fd = expand_and_open(default_pattern, buf, buflen, pos); 886 } 887 } 888 } 889 890 // try temp directory if it exists. 891 if (fd == -1) { 892 const char* tmpdir = os::get_temp_directory(); 893 if (tmpdir != NULL && strlen(tmpdir) > 0) { 894 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator()); 895 if (pos > 0) { 896 fd = expand_and_open(default_pattern, buf, buflen, pos); 897 } 898 } 899 } 900 901 return fd; 902 } 903 904 void VMError::report_and_die() { 905 // Don't allocate large buffer on stack 906 static char buffer[O_BUFLEN]; 907 908 // How many errors occurred in error handler when reporting first_error. 909 static int recursive_error_count; 910 911 // We will first print a brief message to standard out (verbose = false), 912 // then save detailed information in log file (verbose = true). 913 static bool out_done = false; // done printing to standard out 914 static bool log_done = false; // done saving error log 915 static bool transmit_report_done = false; // done error reporting 916 917 if (SuppressFatalErrorMessage) { 918 os::abort(CreateCoredumpOnCrash); 919 } 920 jlong mytid = os::current_thread_id(); 921 if (first_error == NULL && 922 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) { 923 924 // first time 925 first_error_tid = mytid; 926 set_error_reported(); 927 928 if (ShowMessageBoxOnError || PauseAtExit) { 929 show_message_box(buffer, sizeof(buffer)); 930 931 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 932 // WatcherThread can kill JVM if the error handler hangs. 933 ShowMessageBoxOnError = false; 934 } 935 936 os::check_dump_limit(buffer, sizeof(buffer)); 937 938 // reset signal handlers or exception filter; make sure recursive crashes 939 // are handled properly. 940 reset_signal_handlers(); 941 942 } else { 943 // If UseOsErrorReporting we call this for each level of the call stack 944 // while searching for the exception handler. Only the first level needs 945 // to be reported. 946 if (UseOSErrorReporting && log_done) return; 947 948 // This is not the first error, see if it happened in a different thread 949 // or in the same thread during error reporting. 950 if (first_error_tid != mytid) { 951 char msgbuf[64]; 952 jio_snprintf(msgbuf, sizeof(msgbuf), 953 "[thread " INT64_FORMAT " also had an error]", 954 mytid); 955 out.print_raw_cr(msgbuf); 956 957 // error reporting is not MT-safe, block current thread 958 os::infinite_sleep(); 959 960 } else { 961 if (recursive_error_count++ > 30) { 962 out.print_raw_cr("[Too many errors, abort]"); 963 os::die(); 964 } 965 966 jio_snprintf(buffer, sizeof(buffer), 967 "[error occurred during error reporting %s, id 0x%x]", 968 first_error ? first_error->_current_step_info : "", 969 _id); 970 if (log.is_open()) { 971 log.cr(); 972 log.print_raw_cr(buffer); 973 log.cr(); 974 } else { 975 out.cr(); 976 out.print_raw_cr(buffer); 977 out.cr(); 978 } 979 } 980 } 981 982 // print to screen 983 if (!out_done) { 984 first_error->_verbose = false; 985 986 staticBufferStream sbs(buffer, sizeof(buffer), &out); 987 first_error->report(&sbs); 988 989 out_done = true; 990 991 first_error->_current_step = 0; // reset current_step 992 first_error->_current_step_info = ""; // reset current_step string 993 } 994 995 // print to error log file 996 if (!log_done) { 997 first_error->_verbose = true; 998 999 // see if log file is already open 1000 if (!log.is_open()) { 1001 // open log file 1002 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer)); 1003 if (fd != -1) { 1004 out.print_raw("# An error report file with more information is saved as:\n# "); 1005 out.print_raw_cr(buffer); 1006 1007 log.set_fd(fd); 1008 } else { 1009 out.print_raw_cr("# Can not save log file, dump to screen.."); 1010 log.set_fd(defaultStream::output_fd()); 1011 /* Error reporting currently needs dumpfile. 1012 * Maybe implement direct streaming in the future.*/ 1013 transmit_report_done = true; 1014 } 1015 } 1016 1017 staticBufferStream sbs(buffer, O_BUFLEN, &log); 1018 first_error->report(&sbs); 1019 first_error->_current_step = 0; // reset current_step 1020 first_error->_current_step_info = ""; // reset current_step string 1021 1022 // Run error reporting to determine whether or not to report the crash. 1023 if (!transmit_report_done && should_report_bug(first_error->_id)) { 1024 transmit_report_done = true; 1025 const int fd2 = ::dup(log.fd()); 1026 FILE* const hs_err = ::fdopen(fd2, "r"); 1027 if (NULL != hs_err) { 1028 ErrorReporter er; 1029 er.call(hs_err, buffer, O_BUFLEN); 1030 } 1031 ::fclose(hs_err); 1032 } 1033 1034 if (log.fd() != defaultStream::output_fd()) { 1035 close(log.fd()); 1036 } 1037 1038 log.set_fd(-1); 1039 log_done = true; 1040 } 1041 1042 1043 static bool skip_OnError = false; 1044 if (!skip_OnError && OnError && OnError[0]) { 1045 skip_OnError = true; 1046 1047 out.print_raw_cr("#"); 1048 out.print_raw ("# -XX:OnError=\""); 1049 out.print_raw (OnError); 1050 out.print_raw_cr("\""); 1051 1052 char* cmd; 1053 const char* ptr = OnError; 1054 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1055 out.print_raw ("# Executing "); 1056 #if defined(LINUX) || defined(_ALLBSD_SOURCE) 1057 out.print_raw ("/bin/sh -c "); 1058 #elif defined(SOLARIS) 1059 out.print_raw ("/usr/bin/sh -c "); 1060 #endif 1061 out.print_raw ("\""); 1062 out.print_raw (cmd); 1063 out.print_raw_cr("\" ..."); 1064 1065 if (os::fork_and_exec(cmd) < 0) { 1066 out.print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1067 } 1068 } 1069 1070 // done with OnError 1071 OnError = NULL; 1072 } 1073 1074 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay 1075 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) { 1076 skip_replay = true; 1077 ciEnv* env = ciEnv::current(); 1078 if (env != NULL) { 1079 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer)); 1080 if (fd != -1) { 1081 FILE* replay_data_file = os::open(fd, "w"); 1082 if (replay_data_file != NULL) { 1083 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1084 env->dump_replay_data_unsafe(&replay_data_stream); 1085 out.print_raw("#\n# Compiler replay data is saved as:\n# "); 1086 out.print_raw_cr(buffer); 1087 } else { 1088 out.print_raw("#\n# Can't open file to dump replay data. Error: "); 1089 out.print_raw_cr(strerror(os::get_last_error())); 1090 } 1091 } 1092 } 1093 } 1094 1095 static bool skip_bug_url = !should_report_bug(first_error->_id); 1096 if (!skip_bug_url) { 1097 skip_bug_url = true; 1098 1099 out.print_raw_cr("#"); 1100 print_bug_submit_message(&out, _thread); 1101 } 1102 1103 if (!UseOSErrorReporting) { 1104 // os::abort() will call abort hooks, try it first. 1105 static bool skip_os_abort = false; 1106 if (!skip_os_abort) { 1107 skip_os_abort = true; 1108 bool dump_core = should_report_bug(first_error->_id); 1109 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context); 1110 } 1111 1112 // if os::abort() doesn't abort, try os::die(); 1113 os::die(); 1114 } 1115 } 1116 1117 /* 1118 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 1119 * ensures utilities such as jmap can observe the process is a consistent state. 1120 */ 1121 class VM_ReportJavaOutOfMemory : public VM_Operation { 1122 private: 1123 VMError *_err; 1124 public: 1125 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; } 1126 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 1127 void doit(); 1128 }; 1129 1130 void VM_ReportJavaOutOfMemory::doit() { 1131 // Don't allocate large buffer on stack 1132 static char buffer[O_BUFLEN]; 1133 1134 tty->print_cr("#"); 1135 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message()); 1136 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 1137 1138 // make heap parsability 1139 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 1140 1141 char* cmd; 1142 const char* ptr = OnOutOfMemoryError; 1143 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1144 tty->print("# Executing "); 1145 #if defined(LINUX) 1146 tty->print ("/bin/sh -c "); 1147 #elif defined(SOLARIS) 1148 tty->print ("/usr/bin/sh -c "); 1149 #endif 1150 tty->print_cr("\"%s\"...", cmd); 1151 1152 if (os::fork_and_exec(cmd) < 0) { 1153 tty->print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1154 } 1155 } 1156 } 1157 1158 void VMError::report_java_out_of_memory() { 1159 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { 1160 MutexLocker ml(Heap_lock); 1161 VM_ReportJavaOutOfMemory op(this); 1162 VMThread::execute(&op); 1163 } 1164 }