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 void VMError::print_oom_reasons(outputStream* st) { 310 st->print_cr("# Possible reasons:"); 311 st->print_cr("# The system is out of physical RAM or swap space"); 312 st->print_cr("# In 32 bit mode, the process size limit was hit"); 313 st->print_cr("# Possible solutions:"); 314 st->print_cr("# Reduce memory load on the system"); 315 st->print_cr("# Increase physical memory or swap space"); 316 st->print_cr("# Check if swap backing store is full"); 317 st->print_cr("# Use 64 bit Java on a 64 bit OS"); 318 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)"); 319 st->print_cr("# Decrease number of Java threads"); 320 st->print_cr("# Decrease Java thread stack sizes (-Xss)"); 321 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize="); 322 st->print_cr("# This output file may be truncated or incomplete."); 323 } 324 325 const char* VMError::gc_mode() { 326 if (UseG1GC) return "g1 gc"; 327 if (UseParallelGC) return "parallel gc"; 328 if (UseConcMarkSweepGC) return "concurrent mark sweep gc"; 329 if (UseSerialGC) return "serial gc"; 330 return "ERROR in GC mode"; 331 } 332 333 // This is the main function to report a fatal error. Only one thread can 334 // call this function, so we don't need to worry about MT-safety. But it's 335 // possible that the error handler itself may crash or die on an internal 336 // error, for example, when the stack/heap is badly damaged. We must be 337 // able to handle recursive errors that happen inside error handler. 338 // 339 // Error reporting is done in several steps. If a crash or internal error 340 // occurred when reporting an error, the nested signal/exception handler 341 // can skip steps that are already (or partially) done. Error reporting will 342 // continue from the next step. This allows us to retrieve and print 343 // information that may be unsafe to get after a fatal error. If it happens, 344 // you may find nested report_and_die() frames when you look at the stack 345 // in a debugger. 346 // 347 // In general, a hang in error handler is much worse than a crash or internal 348 // error, as it's harder to recover from a hang. Deadlock can happen if we 349 // try to grab a lock that is already owned by current thread, or if the 350 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the 351 // error handler and all the functions it called should avoid grabbing any 352 // lock. An important thing to notice is that memory allocation needs a lock. 353 // 354 // We should avoid using large stack allocated buffers. Many errors happen 355 // when stack space is already low. Making things even worse is that there 356 // could be nested report_and_die() calls on stack (see above). Only one 357 // thread can report error, so large buffers are statically allocated in data 358 // segment. 359 360 void VMError::report(outputStream* st) { 361 # define BEGIN if (_current_step == 0) { _current_step = 1; 362 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s; 363 # define END } 364 365 // don't allocate large buffer on stack 366 static char buf[O_BUFLEN]; 367 368 BEGIN 369 370 STEP(10, "(printing fatal error message)") 371 372 st->print_cr("#"); 373 if (should_report_bug(_id)) { 374 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:"); 375 } else { 376 st->print_cr("# There is insufficient memory for the Java " 377 "Runtime Environment to continue."); 378 } 379 380 #ifndef PRODUCT 381 // Error handler self tests 382 383 // test secondary error handling. Test it twice, to test that resetting 384 // error handler after a secondary crash works. 385 STEP(20, "(test secondary crash 1)") 386 if (_verbose && TestCrashInErrorHandler != 0) { 387 st->print_cr("Will crash now (TestCrashInErrorHandler=%d)...", 388 TestCrashInErrorHandler); 389 controlled_crash(TestCrashInErrorHandler); 390 } 391 392 STEP(30, "(test secondary crash 2)") 393 if (_verbose && TestCrashInErrorHandler != 0) { 394 st->print_cr("Will crash now (TestCrashInErrorHandler=%d)...", 395 TestCrashInErrorHandler); 396 controlled_crash(TestCrashInErrorHandler); 397 } 398 399 STEP(40, "(test safefetch in error handler)") 400 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice 401 // to test that resetting the signal handler works correctly. 402 if (_verbose && TestSafeFetchInErrorHandler) { 403 st->print_cr("Will test SafeFetch..."); 404 if (CanUseSafeFetch32()) { 405 int* const invalid_pointer = (int*) get_segfault_address(); 406 const int x = 0x76543210; 407 int i1 = SafeFetch32(invalid_pointer, x); 408 int i2 = SafeFetch32(invalid_pointer, x); 409 if (i1 == x && i2 == x) { 410 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern 411 } else { 412 st->print_cr("??"); 413 } 414 } else { 415 st->print_cr("not possible; skipped."); 416 } 417 } 418 #endif // PRODUCT 419 420 STEP(50, "(printing type of error)") 421 422 switch(_id) { 423 case OOM_MALLOC_ERROR: 424 case OOM_MMAP_ERROR: 425 if (_size) { 426 st->print("# Native memory allocation "); 427 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " : 428 "(mmap) failed to map "); 429 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size); 430 st->print("%s", buf); 431 st->print(" bytes"); 432 if (_message != NULL) { 433 st->print(" for "); 434 st->print("%s", _message); 435 } 436 st->cr(); 437 } else { 438 if (_message != NULL) { 439 st->print("# "); 440 st->print_cr("%s", _message); 441 } 442 } 443 // In error file give some solutions 444 if (_verbose) { 445 print_oom_reasons(st); 446 } else { 447 return; // that's enough for the screen 448 } 449 break; 450 case INTERNAL_ERROR: 451 default: 452 break; 453 } 454 455 STEP(60, "(printing exception/signal name)") 456 457 st->print_cr("#"); 458 st->print("# "); 459 // Is it an OS exception/signal? 460 if (os::exception_name(_id, buf, sizeof(buf))) { 461 st->print("%s", buf); 462 st->print(" (0x%x)", _id); // signal number 463 st->print(" at pc=" PTR_FORMAT, _pc); 464 } else { 465 if (should_report_bug(_id)) { 466 st->print("Internal Error"); 467 } else { 468 st->print("Out of Memory Error"); 469 } 470 if (_filename != NULL && _lineno > 0) { 471 #ifdef PRODUCT 472 // In product mode chop off pathname? 473 char separator = os::file_separator()[0]; 474 const char *p = strrchr(_filename, separator); 475 const char *file = p ? p+1 : _filename; 476 #else 477 const char *file = _filename; 478 #endif 479 st->print(" (%s:%d)", file, _lineno); 480 } else { 481 st->print(" (0x%x)", _id); 482 } 483 } 484 485 STEP(70, "(printing current thread and pid)") 486 487 // process id, thread id 488 st->print(", pid=%d", os::current_process_id()); 489 st->print(", tid=" INTPTR_FORMAT, os::current_thread_id()); 490 st->cr(); 491 492 STEP(80, "(printing error message)") 493 494 if (should_report_bug(_id)) { // already printed the message. 495 // error message 496 if (_detail_msg) { 497 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg); 498 } else if (_message) { 499 st->print_cr("# Error: %s", _message); 500 } 501 } 502 503 STEP(90, "(printing Java version string)") 504 505 // VM version 506 st->print_cr("#"); 507 JDK_Version::current().to_string(buf, sizeof(buf)); 508 const char* runtime_name = JDK_Version::runtime_name() != NULL ? 509 JDK_Version::runtime_name() : ""; 510 const char* runtime_version = JDK_Version::runtime_version() != NULL ? 511 JDK_Version::runtime_version() : ""; 512 st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version); 513 // This is the long version with some default settings added 514 st->print_cr("# Java VM: %s (%s, %s%s%s, %s, %s)", 515 Abstract_VM_Version::vm_name(), 516 Abstract_VM_Version::vm_release(), 517 Abstract_VM_Version::vm_info_string(), 518 TieredCompilation ? ", tiered" : "", 519 UseCompressedOops ? ", compressed oops" : "", 520 gc_mode(), 521 Abstract_VM_Version::vm_platform_string() 522 ); 523 524 STEP(100, "(printing problematic frame)") 525 526 // Print current frame if we have a context (i.e. it's a crash) 527 if (_context) { 528 st->print_cr("# Problematic frame:"); 529 st->print("# "); 530 frame fr = os::fetch_frame_from_context(_context); 531 fr.print_on_error(st, buf, sizeof(buf)); 532 st->cr(); 533 st->print_cr("#"); 534 } 535 536 STEP(110, "(printing core file information)") 537 st->print("# "); 538 if (CreateCoredumpOnCrash) { 539 if (coredump_status) { 540 st->print("Core dump will be written. Default location: %s", coredump_message); 541 } else { 542 st->print("No core dump will be written. %s", coredump_message); 543 } 544 } else { 545 st->print("CreateCoredumpOnCrash turned off, no core file dumped"); 546 } 547 st->cr(); 548 st->print_cr("#"); 549 550 STEP(120, "(printing bug submit message)") 551 552 if (should_report_bug(_id) && _verbose) { 553 print_bug_submit_message(st, _thread); 554 } 555 556 STEP(130, "(printing summary)" ) 557 558 if (_verbose) { 559 st->cr(); 560 st->print_cr("--------------- S U M M A R Y ------------"); 561 st->cr(); 562 } 563 564 STEP(140, "(printing VM options)" ) 565 566 if (_verbose) { 567 // VM options 568 Arguments::print_summary_on(st); 569 st->cr(); 570 } 571 572 STEP(150, "(printing summary machine and OS info)") 573 574 if (_verbose) { 575 os::print_summary_info(st, buf, sizeof(buf)); 576 } 577 578 579 STEP(160, "(printing date and time)" ) 580 581 if (_verbose) { 582 os::print_date_and_time(st, buf, sizeof(buf)); 583 } 584 585 STEP(170, "(printing thread)" ) 586 587 if (_verbose) { 588 st->cr(); 589 st->print_cr("--------------- T H R E A D ---------------"); 590 st->cr(); 591 } 592 593 STEP(180, "(printing current thread)" ) 594 595 // current thread 596 if (_verbose) { 597 if (_thread) { 598 st->print("Current thread (" PTR_FORMAT "): ", _thread); 599 _thread->print_on_error(st, buf, sizeof(buf)); 600 st->cr(); 601 } else { 602 st->print_cr("Current thread is native thread"); 603 } 604 st->cr(); 605 } 606 607 STEP(190, "(printing current compile task)" ) 608 609 if (_verbose && _thread && _thread->is_Compiler_thread()) { 610 CompilerThread* t = (CompilerThread*)_thread; 611 if (t->task()) { 612 st->cr(); 613 st->print_cr("Current CompileTask:"); 614 t->task()->print_line_on_error(st, buf, sizeof(buf)); 615 st->cr(); 616 } 617 } 618 619 620 STEP(200, "(printing stack bounds)" ) 621 622 if (_verbose) { 623 st->print("Stack: "); 624 625 address stack_top; 626 size_t stack_size; 627 628 if (_thread) { 629 stack_top = _thread->stack_base(); 630 stack_size = _thread->stack_size(); 631 } else { 632 stack_top = os::current_stack_base(); 633 stack_size = os::current_stack_size(); 634 } 635 636 address stack_bottom = stack_top - stack_size; 637 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top); 638 639 frame fr = _context ? os::fetch_frame_from_context(_context) 640 : os::current_frame(); 641 642 if (fr.sp()) { 643 st->print(", sp=" PTR_FORMAT, fr.sp()); 644 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024); 645 st->print(", free space=" SIZE_FORMAT "k", free_stack_size); 646 } 647 648 st->cr(); 649 } 650 651 STEP(210, "(printing native stack)" ) 652 653 if (_verbose) { 654 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) { 655 // We have printed the native stack in platform-specific code 656 // Windows/x64 needs special handling. 657 } else { 658 frame fr = _context ? os::fetch_frame_from_context(_context) 659 : os::current_frame(); 660 661 print_native_stack(st, fr, _thread, buf, sizeof(buf)); 662 } 663 } 664 665 STEP(220, "(printing Java stack)" ) 666 667 if (_verbose && _thread && _thread->is_Java_thread()) { 668 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf)); 669 } 670 671 STEP(230, "(printing target Java thread stack)" ) 672 673 // printing Java thread stack trace if it is involved in GC crash 674 if (_verbose && _thread && (_thread->is_Named_thread())) { 675 JavaThread* jt = ((NamedThread *)_thread)->processed_thread(); 676 if (jt != NULL) { 677 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id()); 678 print_stack_trace(st, jt, buf, sizeof(buf), true); 679 } 680 } 681 682 STEP(240, "(printing siginfo)" ) 683 684 // signal no, signal code, address that caused the fault 685 if (_verbose && _siginfo) { 686 st->cr(); 687 os::print_siginfo(st, _siginfo); 688 st->cr(); 689 } 690 691 STEP(250, "(printing register info)") 692 693 // decode register contents if possible 694 if (_verbose && _context && Universe::is_fully_initialized()) { 695 os::print_register_info(st, _context); 696 st->cr(); 697 } 698 699 STEP(260, "(printing registers, top of stack, instructions near pc)") 700 701 // registers, top of stack, instructions near pc 702 if (_verbose && _context) { 703 os::print_context(st, _context); 704 st->cr(); 705 } 706 707 STEP(270, "(printing VM operation)" ) 708 709 if (_verbose && _thread && _thread->is_VM_thread()) { 710 VMThread* t = (VMThread*)_thread; 711 VM_Operation* op = t->vm_operation(); 712 if (op) { 713 op->print_on_error(st); 714 st->cr(); 715 st->cr(); 716 } 717 } 718 719 STEP(280, "(printing process)" ) 720 721 if (_verbose) { 722 st->cr(); 723 st->print_cr("--------------- P R O C E S S ---------------"); 724 st->cr(); 725 } 726 727 STEP(290, "(printing all threads)" ) 728 729 // all threads 730 if (_verbose && _thread) { 731 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 732 st->cr(); 733 } 734 735 STEP(300, "(printing VM state)" ) 736 737 if (_verbose) { 738 // Safepoint state 739 st->print("VM state:"); 740 741 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 742 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 743 else st->print("not at safepoint"); 744 745 // Also see if error occurred during initialization or shutdown 746 if (!Universe::is_fully_initialized()) { 747 st->print(" (not fully initialized)"); 748 } else if (VM_Exit::vm_exited()) { 749 st->print(" (shutting down)"); 750 } else { 751 st->print(" (normal execution)"); 752 } 753 st->cr(); 754 st->cr(); 755 } 756 757 STEP(310, "(printing owned locks on error)" ) 758 759 // mutexes/monitors that currently have an owner 760 if (_verbose) { 761 print_owned_locks_on_error(st); 762 st->cr(); 763 } 764 765 STEP(320, "(printing number of OutOfMemoryError and StackOverflow exceptions)") 766 767 if (_verbose && Exceptions::has_exception_counts()) { 768 st->print_cr("OutOfMemory and StackOverflow Exception counts:"); 769 Exceptions::print_exception_counts_on_error(st); 770 st->cr(); 771 } 772 773 STEP(330, "(printing compressed oops mode") 774 775 if (_verbose && UseCompressedOops) { 776 Universe::print_compressed_oops_mode(st); 777 if (UseCompressedClassPointers) { 778 Metaspace::print_compressed_class_space(st); 779 } 780 st->cr(); 781 } 782 783 STEP(340, "(printing heap information)" ) 784 785 if (_verbose && Universe::is_fully_initialized()) { 786 Universe::heap()->print_on_error(st); 787 st->cr(); 788 789 st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page()); 790 st->cr(); 791 } 792 793 STEP(350, "(printing code cache information)" ) 794 795 if (_verbose && Universe::is_fully_initialized()) { 796 // print code cache information before vm abort 797 CodeCache::print_summary(st); 798 st->cr(); 799 } 800 801 STEP(360, "(printing ring buffers)" ) 802 803 if (_verbose) { 804 Events::print_all(st); 805 st->cr(); 806 } 807 808 STEP(370, "(printing dynamic libraries)" ) 809 810 if (_verbose) { 811 // dynamic libraries, or memory map 812 os::print_dll_info(st); 813 st->cr(); 814 } 815 816 STEP(380, "(printing VM options)" ) 817 818 if (_verbose) { 819 // VM options 820 Arguments::print_on(st); 821 st->cr(); 822 } 823 824 825 STEP(390, "(printing warning if internal testing API used)" ) 826 827 if (WhiteBox::used()) { 828 st->print_cr("Unsupported internal testing APIs have been used."); 829 st->cr(); 830 } 831 832 STEP(400, "(printing all environment variables)" ) 833 834 if (_verbose) { 835 os::print_environment_variables(st, env_list); 836 st->cr(); 837 } 838 839 STEP(410, "(printing signal handlers)" ) 840 841 if (_verbose) { 842 os::print_signal_handlers(st, buf, sizeof(buf)); 843 st->cr(); 844 } 845 846 STEP(420, "(Native Memory Tracking)" ) 847 if (_verbose) { 848 MemTracker::error_report(st); 849 } 850 851 STEP(430, "(printing system)" ) 852 853 if (_verbose) { 854 st->cr(); 855 st->print_cr("--------------- S Y S T E M ---------------"); 856 st->cr(); 857 } 858 859 STEP(440, "(printing OS information)" ) 860 861 if (_verbose) { 862 os::print_os_info(st); 863 st->cr(); 864 } 865 866 STEP(450, "(printing CPU info)" ) 867 if (_verbose) { 868 os::print_cpu_info(st, buf, sizeof(buf)); 869 st->cr(); 870 } 871 872 STEP(460, "(printing memory info)" ) 873 874 if (_verbose) { 875 os::print_memory_info(st); 876 st->cr(); 877 } 878 879 STEP(470, "(printing internal vm info)" ) 880 881 if (_verbose) { 882 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 883 st->cr(); 884 } 885 886 // print a defined marker to show that error handling finished correctly. 887 STEP(480, "(printing end marker)" ) 888 889 if (_verbose) { 890 st->print_cr("END."); 891 } 892 893 END 894 895 # undef BEGIN 896 # undef STEP 897 # undef END 898 } 899 900 VMError* volatile VMError::first_error = NULL; 901 volatile jlong VMError::first_error_tid = -1; 902 903 // An error could happen before tty is initialized or after it has been 904 // destroyed. Here we use a very simple unbuffered fdStream for printing. 905 // Only out.print_raw() and out.print_raw_cr() should be used, as other 906 // printing methods need to allocate large buffer on stack. To format a 907 // string, use jio_snprintf() with a static buffer or use staticBufferStream. 908 fdStream VMError::out(defaultStream::output_fd()); 909 fdStream VMError::log; // error log used by VMError::report_and_die() 910 911 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */ 912 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) { 913 int fd = -1; 914 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) { 915 // the O_EXCL flag will cause the open to fail if the file exists 916 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666); 917 } 918 return fd; 919 } 920 921 /** 922 * Construct file name for a log file and return it's file descriptor. 923 * Name and location depends on pattern, default_pattern params and access 924 * permissions. 925 */ 926 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) { 927 int fd = -1; 928 929 // If possible, use specified pattern to construct log file name 930 if (pattern != NULL) { 931 fd = expand_and_open(pattern, buf, buflen, 0); 932 } 933 934 // Either user didn't specify, or the user's location failed, 935 // so use the default name in the current directory 936 if (fd == -1) { 937 const char* cwd = os::get_current_directory(buf, buflen); 938 if (cwd != NULL) { 939 size_t pos = strlen(cwd); 940 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator()); 941 pos += fsep_len; 942 if (fsep_len > 0) { 943 fd = expand_and_open(default_pattern, buf, buflen, pos); 944 } 945 } 946 } 947 948 // try temp directory if it exists. 949 if (fd == -1) { 950 const char* tmpdir = os::get_temp_directory(); 951 if (tmpdir != NULL && strlen(tmpdir) > 0) { 952 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator()); 953 if (pos > 0) { 954 fd = expand_and_open(default_pattern, buf, buflen, pos); 955 } 956 } 957 } 958 959 return fd; 960 } 961 962 void VMError::report_and_die() { 963 // Don't allocate large buffer on stack 964 static char buffer[O_BUFLEN]; 965 966 // How many errors occurred in error handler when reporting first_error. 967 static int recursive_error_count; 968 969 // We will first print a brief message to standard out (verbose = false), 970 // then save detailed information in log file (verbose = true). 971 static bool out_done = false; // done printing to standard out 972 static bool log_done = false; // done saving error log 973 static bool transmit_report_done = false; // done error reporting 974 975 if (SuppressFatalErrorMessage) { 976 os::abort(CreateCoredumpOnCrash); 977 } 978 jlong mytid = os::current_thread_id(); 979 if (first_error == NULL && 980 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) { 981 982 // first time 983 first_error_tid = mytid; 984 set_error_reported(); 985 986 if (ShowMessageBoxOnError || PauseAtExit) { 987 show_message_box(buffer, sizeof(buffer)); 988 989 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 990 // WatcherThread can kill JVM if the error handler hangs. 991 ShowMessageBoxOnError = false; 992 } 993 994 os::check_dump_limit(buffer, sizeof(buffer)); 995 996 // reset signal handlers or exception filter; make sure recursive crashes 997 // are handled properly. 998 reset_signal_handlers(); 999 1000 } else { 1001 // If UseOsErrorReporting we call this for each level of the call stack 1002 // while searching for the exception handler. Only the first level needs 1003 // to be reported. 1004 if (UseOSErrorReporting && log_done) return; 1005 1006 // This is not the first error, see if it happened in a different thread 1007 // or in the same thread during error reporting. 1008 if (first_error_tid != mytid) { 1009 char msgbuf[64]; 1010 jio_snprintf(msgbuf, sizeof(msgbuf), 1011 "[thread " INT64_FORMAT " also had an error]", 1012 mytid); 1013 out.print_raw_cr(msgbuf); 1014 1015 // error reporting is not MT-safe, block current thread 1016 os::infinite_sleep(); 1017 1018 } else { 1019 if (recursive_error_count++ > 30) { 1020 out.print_raw_cr("[Too many errors, abort]"); 1021 os::die(); 1022 } 1023 1024 jio_snprintf(buffer, sizeof(buffer), 1025 "[error occurred during error reporting %s, id 0x%x]", 1026 first_error ? first_error->_current_step_info : "", 1027 _id); 1028 if (log.is_open()) { 1029 log.cr(); 1030 log.print_raw_cr(buffer); 1031 log.cr(); 1032 } else { 1033 out.cr(); 1034 out.print_raw_cr(buffer); 1035 out.cr(); 1036 } 1037 } 1038 } 1039 1040 // print to screen 1041 if (!out_done) { 1042 first_error->_verbose = false; 1043 1044 staticBufferStream sbs(buffer, sizeof(buffer), &out); 1045 first_error->report(&sbs); 1046 1047 out_done = true; 1048 1049 first_error->_current_step = 0; // reset current_step 1050 first_error->_current_step_info = ""; // reset current_step string 1051 } 1052 1053 // print to error log file 1054 if (!log_done) { 1055 first_error->_verbose = true; 1056 1057 // see if log file is already open 1058 if (!log.is_open()) { 1059 // open log file 1060 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer)); 1061 if (fd != -1) { 1062 out.print_raw("# An error report file with more information is saved as:\n# "); 1063 out.print_raw_cr(buffer); 1064 1065 log.set_fd(fd); 1066 } else { 1067 out.print_raw_cr("# Can not save log file, dump to screen.."); 1068 log.set_fd(defaultStream::output_fd()); 1069 /* Error reporting currently needs dumpfile. 1070 * Maybe implement direct streaming in the future.*/ 1071 transmit_report_done = true; 1072 } 1073 } 1074 1075 staticBufferStream sbs(buffer, O_BUFLEN, &log); 1076 first_error->report(&sbs); 1077 first_error->_current_step = 0; // reset current_step 1078 first_error->_current_step_info = ""; // reset current_step string 1079 1080 // Run error reporting to determine whether or not to report the crash. 1081 if (!transmit_report_done && should_report_bug(first_error->_id)) { 1082 transmit_report_done = true; 1083 const int fd2 = ::dup(log.fd()); 1084 FILE* const hs_err = ::fdopen(fd2, "r"); 1085 if (NULL != hs_err) { 1086 ErrorReporter er; 1087 er.call(hs_err, buffer, O_BUFLEN); 1088 } 1089 ::fclose(hs_err); 1090 } 1091 1092 if (log.fd() != defaultStream::output_fd()) { 1093 close(log.fd()); 1094 } 1095 1096 log.set_fd(-1); 1097 log_done = true; 1098 } 1099 1100 1101 static bool skip_OnError = false; 1102 if (!skip_OnError && OnError && OnError[0]) { 1103 skip_OnError = true; 1104 1105 out.print_raw_cr("#"); 1106 out.print_raw ("# -XX:OnError=\""); 1107 out.print_raw (OnError); 1108 out.print_raw_cr("\""); 1109 1110 char* cmd; 1111 const char* ptr = OnError; 1112 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1113 out.print_raw ("# Executing "); 1114 #if defined(LINUX) || defined(_ALLBSD_SOURCE) 1115 out.print_raw ("/bin/sh -c "); 1116 #elif defined(SOLARIS) 1117 out.print_raw ("/usr/bin/sh -c "); 1118 #endif 1119 out.print_raw ("\""); 1120 out.print_raw (cmd); 1121 out.print_raw_cr("\" ..."); 1122 1123 if (os::fork_and_exec(cmd) < 0) { 1124 out.print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1125 } 1126 } 1127 1128 // done with OnError 1129 OnError = NULL; 1130 } 1131 1132 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay 1133 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) { 1134 skip_replay = true; 1135 ciEnv* env = ciEnv::current(); 1136 if (env != NULL) { 1137 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer)); 1138 if (fd != -1) { 1139 FILE* replay_data_file = os::open(fd, "w"); 1140 if (replay_data_file != NULL) { 1141 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1142 env->dump_replay_data_unsafe(&replay_data_stream); 1143 out.print_raw("#\n# Compiler replay data is saved as:\n# "); 1144 out.print_raw_cr(buffer); 1145 } else { 1146 out.print_raw("#\n# Can't open file to dump replay data. Error: "); 1147 out.print_raw_cr(strerror(os::get_last_error())); 1148 } 1149 } 1150 } 1151 } 1152 1153 static bool skip_bug_url = !should_report_bug(first_error->_id); 1154 if (!skip_bug_url) { 1155 skip_bug_url = true; 1156 1157 out.print_raw_cr("#"); 1158 print_bug_submit_message(&out, _thread); 1159 } 1160 1161 if (!UseOSErrorReporting) { 1162 // os::abort() will call abort hooks, try it first. 1163 static bool skip_os_abort = false; 1164 if (!skip_os_abort) { 1165 skip_os_abort = true; 1166 bool dump_core = should_report_bug(first_error->_id); 1167 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context); 1168 } 1169 1170 // if os::abort() doesn't abort, try os::die(); 1171 os::die(); 1172 } 1173 } 1174 1175 /* 1176 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 1177 * ensures utilities such as jmap can observe the process is a consistent state. 1178 */ 1179 class VM_ReportJavaOutOfMemory : public VM_Operation { 1180 private: 1181 VMError *_err; 1182 public: 1183 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; } 1184 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 1185 void doit(); 1186 }; 1187 1188 void VM_ReportJavaOutOfMemory::doit() { 1189 // Don't allocate large buffer on stack 1190 static char buffer[O_BUFLEN]; 1191 1192 tty->print_cr("#"); 1193 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message()); 1194 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 1195 1196 // make heap parsability 1197 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 1198 1199 char* cmd; 1200 const char* ptr = OnOutOfMemoryError; 1201 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1202 tty->print("# Executing "); 1203 #if defined(LINUX) 1204 tty->print ("/bin/sh -c "); 1205 #elif defined(SOLARIS) 1206 tty->print ("/usr/bin/sh -c "); 1207 #endif 1208 tty->print_cr("\"%s\"...", cmd); 1209 1210 if (os::fork_and_exec(cmd) < 0) { 1211 tty->print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1212 } 1213 } 1214 } 1215 1216 void VMError::report_java_out_of_memory() { 1217 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { 1218 MutexLocker ml(Heap_lock); 1219 VM_ReportJavaOutOfMemory op(this); 1220 VMThread::execute(&op); 1221 } 1222 }