1 /* 2 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include <fcntl.h> 26 #include "precompiled.hpp" 27 #include "code/codeCache.hpp" 28 #include "compiler/compileBroker.hpp" 29 #include "compiler/disassembler.hpp" 30 #include "gc/shared/collectedHeap.hpp" 31 #include "prims/whitebox.hpp" 32 #include "runtime/arguments.hpp" 33 #include "runtime/atomic.inline.hpp" 34 #include "runtime/frame.inline.hpp" 35 #include "runtime/init.hpp" 36 #include "runtime/os.hpp" 37 #include "runtime/thread.inline.hpp" 38 #include "runtime/vmThread.hpp" 39 #include "runtime/vm_operations.hpp" 40 #include "services/memTracker.hpp" 41 #include "utilities/debug.hpp" 42 #include "utilities/decoder.hpp" 43 #include "utilities/defaultStream.hpp" 44 #include "utilities/errorReporter.hpp" 45 #include "utilities/events.hpp" 46 #include "utilities/top.hpp" 47 #include "utilities/vmError.hpp" 48 49 // List of environment variables that should be reported in error log file. 50 const char *env_list[] = { 51 // All platforms 52 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH", 53 "JAVA_COMPILER", "PATH", "USERNAME", 54 55 // Env variables that are defined on Solaris/Linux/BSD 56 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY", 57 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE", 58 59 // defined on Linux 60 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM", 61 62 // defined on Darwin 63 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH", 64 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH", 65 "DYLD_INSERT_LIBRARIES", 66 67 // defined on Windows 68 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR", 69 70 (const char *)0 71 }; 72 73 // A simple parser for -XX:OnError, usage: 74 // ptr = OnError; 75 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL) 76 // ... ... 77 static char* next_OnError_command(char* buf, int buflen, const char** ptr) { 78 if (ptr == NULL || *ptr == NULL) return NULL; 79 80 const char* cmd = *ptr; 81 82 // skip leading blanks or ';' 83 while (*cmd == ' ' || *cmd == ';') cmd++; 84 85 if (*cmd == '\0') return NULL; 86 87 const char * cmdend = cmd; 88 while (*cmdend != '\0' && *cmdend != ';') cmdend++; 89 90 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen); 91 92 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1); 93 return buf; 94 } 95 96 static void print_bug_submit_message(outputStream *out, Thread *thread) { 97 if (out == NULL) return; 98 out->print_raw_cr("# If you would like to submit a bug report, please visit:"); 99 out->print_raw ("# "); 100 out->print_raw_cr(Arguments::java_vendor_url_bug()); 101 // If the crash is in native code, encourage user to submit a bug to the 102 // provider of that code. 103 if (thread && thread->is_Java_thread() && 104 !thread->is_hidden_from_external_view()) { 105 JavaThread* jt = (JavaThread*)thread; 106 if (jt->thread_state() == _thread_in_native) { 107 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug."); 108 } 109 } 110 out->print_raw_cr("#"); 111 } 112 113 bool VMError::coredump_status; 114 char VMError::coredump_message[O_BUFLEN]; 115 116 void VMError::record_coredump_status(const char* message, bool status) { 117 coredump_status = status; 118 strncpy(coredump_message, message, sizeof(coredump_message)); 119 coredump_message[sizeof(coredump_message)-1] = 0; 120 } 121 122 // Return a string to describe the error 123 char* VMError::error_string(char* buf, int buflen) { 124 char signame_buf[64]; 125 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf)); 126 127 if (signame) { 128 jio_snprintf(buf, buflen, 129 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT, 130 signame, _id, _pc, 131 os::current_process_id(), os::current_thread_id()); 132 } else if (_filename != NULL && _lineno > 0) { 133 // skip directory names 134 char separator = os::file_separator()[0]; 135 const char *p = strrchr(_filename, separator); 136 int n = jio_snprintf(buf, buflen, 137 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT, 138 p ? p + 1 : _filename, _lineno, 139 os::current_process_id(), os::current_thread_id()); 140 if (n >= 0 && n < buflen && _message) { 141 if (strlen(_detail_msg) > 0) { 142 jio_snprintf(buf + n, buflen - n, "%s%s: %s", 143 os::line_separator(), _message, _detail_msg); 144 } else { 145 jio_snprintf(buf + n, buflen - n, "%sError: %s", 146 os::line_separator(), _message); 147 } 148 } 149 } else { 150 jio_snprintf(buf, buflen, 151 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT, 152 _id, os::current_process_id(), os::current_thread_id()); 153 } 154 155 return buf; 156 } 157 158 void VMError::print_stack_trace(outputStream* st, JavaThread* jt, 159 char* buf, int buflen, bool verbose) { 160 #ifdef ZERO 161 if (jt->zero_stack()->sp() && jt->top_zero_frame()) { 162 // StackFrameStream uses the frame anchor, which may not have 163 // been set up. This can be done at any time in Zero, however, 164 // so if it hasn't been set up then we just set it up now and 165 // clear it again when we're done. 166 bool has_last_Java_frame = jt->has_last_Java_frame(); 167 if (!has_last_Java_frame) 168 jt->set_last_Java_frame(); 169 st->print("Java frames:"); 170 171 // If the top frame is a Shark frame and the frame anchor isn't 172 // set up then it's possible that the information in the frame 173 // is garbage: it could be from a previous decache, or it could 174 // simply have never been written. So we print a warning... 175 StackFrameStream sfs(jt); 176 if (!has_last_Java_frame && !sfs.is_done()) { 177 if (sfs.current()->zeroframe()->is_shark_frame()) { 178 st->print(" (TOP FRAME MAY BE JUNK)"); 179 } 180 } 181 st->cr(); 182 183 // Print the frames 184 for(int i = 0; !sfs.is_done(); sfs.next(), i++) { 185 sfs.current()->zero_print_on_error(i, st, buf, buflen); 186 st->cr(); 187 } 188 189 // Reset the frame anchor if necessary 190 if (!has_last_Java_frame) 191 jt->reset_last_Java_frame(); 192 } 193 #else 194 if (jt->has_last_Java_frame()) { 195 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)"); 196 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) { 197 sfs.current()->print_on_error(st, buf, buflen, verbose); 198 st->cr(); 199 } 200 } 201 #endif // ZERO 202 } 203 204 static void print_oom_reasons(outputStream* st) { 205 st->print_cr("# Possible reasons:"); 206 st->print_cr("# The system is out of physical RAM or swap space"); 207 st->print_cr("# In 32 bit mode, the process size limit was hit"); 208 st->print_cr("# Possible solutions:"); 209 st->print_cr("# Reduce memory load on the system"); 210 st->print_cr("# Increase physical memory or swap space"); 211 st->print_cr("# Check if swap backing store is full"); 212 st->print_cr("# Use 64 bit Java on a 64 bit OS"); 213 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)"); 214 st->print_cr("# Decrease number of Java threads"); 215 st->print_cr("# Decrease Java thread stack sizes (-Xss)"); 216 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize="); 217 st->print_cr("# This output file may be truncated or incomplete."); 218 } 219 220 static const char* gc_mode() { 221 if (UseG1GC) return "g1 gc"; 222 if (UseParallelGC) return "parallel gc"; 223 if (UseConcMarkSweepGC) return "concurrent mark sweep gc"; 224 if (UseSerialGC) return "serial gc"; 225 return "ERROR in GC mode"; 226 } 227 228 static void report_vm_version(outputStream* st, char* buf, int buflen) { 229 // VM version 230 st->print_cr("#"); 231 JDK_Version::current().to_string(buf, buflen); 232 const char* runtime_name = JDK_Version::runtime_name() != NULL ? 233 JDK_Version::runtime_name() : ""; 234 const char* runtime_version = JDK_Version::runtime_version() != NULL ? 235 JDK_Version::runtime_version() : ""; 236 st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version); 237 // This is the long version with some default settings added 238 st->print_cr("# Java VM: %s (%s, %s%s%s%s%s, %s, %s)", 239 Abstract_VM_Version::vm_name(), 240 Abstract_VM_Version::vm_release(), 241 Abstract_VM_Version::vm_info_string(), 242 TieredCompilation ? ", tiered" : "", 243 #if INCLUDE_JVMCI 244 EnableJVMCI ? ", jvmci" : "", 245 UseJVMCICompiler ? ", jvmci compiler" : "", 246 #else 247 "", "", 248 #endif 249 UseCompressedOops ? ", compressed oops" : "", 250 gc_mode(), 251 Abstract_VM_Version::vm_platform_string() 252 ); 253 } 254 255 // This is the main function to report a fatal error. Only one thread can 256 // call this function, so we don't need to worry about MT-safety. But it's 257 // possible that the error handler itself may crash or die on an internal 258 // error, for example, when the stack/heap is badly damaged. We must be 259 // able to handle recursive errors that happen inside error handler. 260 // 261 // Error reporting is done in several steps. If a crash or internal error 262 // occurred when reporting an error, the nested signal/exception handler 263 // can skip steps that are already (or partially) done. Error reporting will 264 // continue from the next step. This allows us to retrieve and print 265 // information that may be unsafe to get after a fatal error. If it happens, 266 // you may find nested report_and_die() frames when you look at the stack 267 // in a debugger. 268 // 269 // In general, a hang in error handler is much worse than a crash or internal 270 // error, as it's harder to recover from a hang. Deadlock can happen if we 271 // try to grab a lock that is already owned by current thread, or if the 272 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the 273 // error handler and all the functions it called should avoid grabbing any 274 // lock. An important thing to notice is that memory allocation needs a lock. 275 // 276 // We should avoid using large stack allocated buffers. Many errors happen 277 // when stack space is already low. Making things even worse is that there 278 // could be nested report_and_die() calls on stack (see above). Only one 279 // thread can report error, so large buffers are statically allocated in data 280 // segment. 281 282 int VMError::_current_step; 283 const char* VMError::_current_step_info; 284 285 void VMError::report(outputStream* st, bool _verbose) { 286 287 # define BEGIN if (_current_step == 0) { _current_step = 1; 288 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s; 289 # define END } 290 291 // don't allocate large buffer on stack 292 static char buf[O_BUFLEN]; 293 294 BEGIN 295 296 STEP(10, "(printing fatal error message)") 297 298 st->print_cr("#"); 299 if (should_report_bug(_id)) { 300 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:"); 301 } else { 302 st->print_cr("# There is insufficient memory for the Java " 303 "Runtime Environment to continue."); 304 } 305 306 #ifndef PRODUCT 307 // Error handler self tests 308 309 // test secondary error handling. Test it twice, to test that resetting 310 // error handler after a secondary crash works. 311 STEP(20, "(test secondary crash 1)") 312 if (_verbose && TestCrashInErrorHandler != 0) { 313 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...", 314 TestCrashInErrorHandler); 315 controlled_crash(TestCrashInErrorHandler); 316 } 317 318 STEP(30, "(test secondary crash 2)") 319 if (_verbose && TestCrashInErrorHandler != 0) { 320 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...", 321 TestCrashInErrorHandler); 322 controlled_crash(TestCrashInErrorHandler); 323 } 324 325 STEP(40, "(test safefetch in error handler)") 326 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice 327 // to test that resetting the signal handler works correctly. 328 if (_verbose && TestSafeFetchInErrorHandler) { 329 st->print_cr("Will test SafeFetch..."); 330 if (CanUseSafeFetch32()) { 331 int* const invalid_pointer = (int*) get_segfault_address(); 332 const int x = 0x76543210; 333 int i1 = SafeFetch32(invalid_pointer, x); 334 int i2 = SafeFetch32(invalid_pointer, x); 335 if (i1 == x && i2 == x) { 336 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern 337 } else { 338 st->print_cr("??"); 339 } 340 } else { 341 st->print_cr("not possible; skipped."); 342 } 343 } 344 #endif // PRODUCT 345 346 STEP(50, "(printing type of error)") 347 348 switch(_id) { 349 case OOM_MALLOC_ERROR: 350 case OOM_MMAP_ERROR: 351 if (_size) { 352 st->print("# Native memory allocation "); 353 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " : 354 "(mmap) failed to map "); 355 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size); 356 st->print("%s", buf); 357 st->print(" bytes"); 358 if (strlen(_detail_msg) > 0) { 359 st->print(" for "); 360 st->print("%s", _detail_msg); 361 } 362 st->cr(); 363 } else { 364 if (strlen(_detail_msg) > 0) { 365 st->print("# "); 366 st->print_cr("%s", _detail_msg); 367 } 368 } 369 // In error file give some solutions 370 if (_verbose) { 371 print_oom_reasons(st); 372 } else { 373 return; // that's enough for the screen 374 } 375 break; 376 case INTERNAL_ERROR: 377 default: 378 break; 379 } 380 381 STEP(60, "(printing exception/signal name)") 382 383 st->print_cr("#"); 384 st->print("# "); 385 // Is it an OS exception/signal? 386 if (os::exception_name(_id, buf, sizeof(buf))) { 387 st->print("%s", buf); 388 st->print(" (0x%x)", _id); // signal number 389 st->print(" at pc=" PTR_FORMAT, p2i(_pc)); 390 } else { 391 if (should_report_bug(_id)) { 392 st->print("Internal Error"); 393 } else { 394 st->print("Out of Memory Error"); 395 } 396 if (_filename != NULL && _lineno > 0) { 397 #ifdef PRODUCT 398 // In product mode chop off pathname? 399 char separator = os::file_separator()[0]; 400 const char *p = strrchr(_filename, separator); 401 const char *file = p ? p+1 : _filename; 402 #else 403 const char *file = _filename; 404 #endif 405 st->print(" (%s:%d)", file, _lineno); 406 } else { 407 st->print(" (0x%x)", _id); 408 } 409 } 410 411 STEP(70, "(printing current thread and pid)") 412 413 // process id, thread id 414 st->print(", pid=%d", os::current_process_id()); 415 st->print(", tid=" UINTX_FORMAT, os::current_thread_id()); 416 st->cr(); 417 418 STEP(80, "(printing error message)") 419 420 if (should_report_bug(_id)) { // already printed the message. 421 // error message 422 if (strlen(_detail_msg) > 0) { 423 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg); 424 } else if (_message) { 425 st->print_cr("# Error: %s", _message); 426 } 427 } 428 429 STEP(90, "(printing Java version string)") 430 431 report_vm_version(st, buf, sizeof(buf)); 432 433 STEP(100, "(printing problematic frame)") 434 435 // Print current frame if we have a context (i.e. it's a crash) 436 if (_context) { 437 st->print_cr("# Problematic frame:"); 438 st->print("# "); 439 frame fr = os::fetch_frame_from_context(_context); 440 fr.print_on_error(st, buf, sizeof(buf)); 441 st->cr(); 442 st->print_cr("#"); 443 } 444 445 STEP(110, "(printing core file information)") 446 st->print("# "); 447 if (CreateCoredumpOnCrash) { 448 if (coredump_status) { 449 st->print("Core dump will be written. Default location: %s", coredump_message); 450 } else { 451 st->print("No core dump will be written. %s", coredump_message); 452 } 453 } else { 454 st->print("CreateCoredumpOnCrash turned off, no core file dumped"); 455 } 456 st->cr(); 457 st->print_cr("#"); 458 459 STEP(120, "(printing bug submit message)") 460 461 if (should_report_bug(_id) && _verbose) { 462 print_bug_submit_message(st, _thread); 463 } 464 465 STEP(130, "(printing summary)" ) 466 467 if (_verbose) { 468 st->cr(); 469 st->print_cr("--------------- S U M M A R Y ------------"); 470 st->cr(); 471 } 472 473 STEP(140, "(printing VM option summary)" ) 474 475 if (_verbose) { 476 // VM options 477 Arguments::print_summary_on(st); 478 st->cr(); 479 } 480 481 STEP(150, "(printing summary machine and OS info)") 482 483 if (_verbose) { 484 os::print_summary_info(st, buf, sizeof(buf)); 485 } 486 487 488 STEP(160, "(printing date and time)" ) 489 490 if (_verbose) { 491 os::print_date_and_time(st, buf, sizeof(buf)); 492 } 493 494 STEP(170, "(printing thread)" ) 495 496 if (_verbose) { 497 st->cr(); 498 st->print_cr("--------------- T H R E A D ---------------"); 499 st->cr(); 500 } 501 502 STEP(180, "(printing current thread)" ) 503 504 // current thread 505 if (_verbose) { 506 if (_thread) { 507 st->print("Current thread (" PTR_FORMAT "): ", p2i(_thread)); 508 _thread->print_on_error(st, buf, sizeof(buf)); 509 st->cr(); 510 } else { 511 st->print_cr("Current thread is native thread"); 512 } 513 st->cr(); 514 } 515 516 STEP(190, "(printing current compile task)" ) 517 518 if (_verbose && _thread && _thread->is_Compiler_thread()) { 519 CompilerThread* t = (CompilerThread*)_thread; 520 if (t->task()) { 521 st->cr(); 522 st->print_cr("Current CompileTask:"); 523 t->task()->print_line_on_error(st, buf, sizeof(buf)); 524 st->cr(); 525 } 526 } 527 528 529 STEP(200, "(printing stack bounds)" ) 530 531 if (_verbose) { 532 st->print("Stack: "); 533 534 address stack_top; 535 size_t stack_size; 536 537 if (_thread) { 538 stack_top = _thread->stack_base(); 539 stack_size = _thread->stack_size(); 540 } else { 541 stack_top = os::current_stack_base(); 542 stack_size = os::current_stack_size(); 543 } 544 545 address stack_bottom = stack_top - stack_size; 546 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", p2i(stack_bottom), p2i(stack_top)); 547 548 frame fr = _context ? os::fetch_frame_from_context(_context) 549 : os::current_frame(); 550 551 if (fr.sp()) { 552 st->print(", sp=" PTR_FORMAT, p2i(fr.sp())); 553 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024); 554 st->print(", free space=" SIZE_FORMAT "k", free_stack_size); 555 } 556 557 st->cr(); 558 } 559 560 STEP(210, "(printing native stack)" ) 561 562 if (_verbose) { 563 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) { 564 // We have printed the native stack in platform-specific code 565 // Windows/x64 needs special handling. 566 } else { 567 frame fr = _context ? os::fetch_frame_from_context(_context) 568 : os::current_frame(); 569 570 print_native_stack(st, fr, _thread, buf, sizeof(buf)); 571 } 572 } 573 574 STEP(220, "(printing Java stack)" ) 575 576 if (_verbose && _thread && _thread->is_Java_thread()) { 577 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf)); 578 } 579 580 STEP(230, "(printing target Java thread stack)" ) 581 582 // printing Java thread stack trace if it is involved in GC crash 583 if (_verbose && _thread && (_thread->is_Named_thread())) { 584 JavaThread* jt = ((NamedThread *)_thread)->processed_thread(); 585 if (jt != NULL) { 586 st->print_cr("JavaThread " PTR_FORMAT " (nid = %d) was being processed", p2i(jt), jt->osthread()->thread_id()); 587 print_stack_trace(st, jt, buf, sizeof(buf), true); 588 } 589 } 590 591 STEP(240, "(printing siginfo)" ) 592 593 // signal no, signal code, address that caused the fault 594 if (_verbose && _siginfo) { 595 st->cr(); 596 os::print_siginfo(st, _siginfo); 597 st->cr(); 598 } 599 600 STEP(250, "(printing register info)") 601 602 // decode register contents if possible 603 if (_verbose && _context && Universe::is_fully_initialized()) { 604 os::print_register_info(st, _context); 605 st->cr(); 606 } 607 608 STEP(260, "(printing registers, top of stack, instructions near pc)") 609 610 // registers, top of stack, instructions near pc 611 if (_verbose && _context) { 612 os::print_context(st, _context); 613 st->cr(); 614 } 615 616 STEP(265, "(printing code blob if possible)") 617 618 if (_verbose && _context) { 619 CodeBlob* cb = CodeCache::find_blob(_pc); 620 if (cb != NULL) { 621 if (Interpreter::contains(_pc)) { 622 // The interpreter CodeBlob is very large so try to print the codelet instead. 623 InterpreterCodelet* codelet = Interpreter::codelet_containing(_pc); 624 if (codelet != NULL) { 625 codelet->print_on(st); 626 Disassembler::decode(codelet->code_begin(), codelet->code_end(), st); 627 } 628 } else { 629 StubCodeDesc* desc = StubCodeDesc::desc_for(_pc); 630 if (desc != NULL) { 631 desc->print_on(st); 632 Disassembler::decode(desc->begin(), desc->end(), st); 633 } else { 634 Disassembler::decode(cb, st); 635 st->cr(); 636 } 637 } 638 } 639 } 640 641 STEP(270, "(printing VM operation)" ) 642 643 if (_verbose && _thread && _thread->is_VM_thread()) { 644 VMThread* t = (VMThread*)_thread; 645 VM_Operation* op = t->vm_operation(); 646 if (op) { 647 op->print_on_error(st); 648 st->cr(); 649 st->cr(); 650 } 651 } 652 653 STEP(280, "(printing process)" ) 654 655 if (_verbose) { 656 st->cr(); 657 st->print_cr("--------------- P R O C E S S ---------------"); 658 st->cr(); 659 } 660 661 STEP(290, "(printing all threads)" ) 662 663 // all threads 664 if (_verbose && _thread) { 665 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 666 st->cr(); 667 } 668 669 STEP(300, "(printing VM state)" ) 670 671 if (_verbose) { 672 // Safepoint state 673 st->print("VM state:"); 674 675 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 676 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 677 else st->print("not at safepoint"); 678 679 // Also see if error occurred during initialization or shutdown 680 if (!Universe::is_fully_initialized()) { 681 st->print(" (not fully initialized)"); 682 } else if (VM_Exit::vm_exited()) { 683 st->print(" (shutting down)"); 684 } else { 685 st->print(" (normal execution)"); 686 } 687 st->cr(); 688 st->cr(); 689 } 690 691 STEP(310, "(printing owned locks on error)" ) 692 693 // mutexes/monitors that currently have an owner 694 if (_verbose) { 695 print_owned_locks_on_error(st); 696 st->cr(); 697 } 698 699 STEP(320, "(printing number of OutOfMemoryError and StackOverflow exceptions)") 700 701 if (_verbose && Exceptions::has_exception_counts()) { 702 st->print_cr("OutOfMemory and StackOverflow Exception counts:"); 703 Exceptions::print_exception_counts_on_error(st); 704 st->cr(); 705 } 706 707 STEP(330, "(printing compressed oops mode") 708 709 if (_verbose && UseCompressedOops) { 710 Universe::print_compressed_oops_mode(st); 711 if (UseCompressedClassPointers) { 712 Metaspace::print_compressed_class_space(st); 713 } 714 st->cr(); 715 } 716 717 STEP(340, "(printing heap information)" ) 718 719 if (_verbose && Universe::is_fully_initialized()) { 720 Universe::heap()->print_on_error(st); 721 st->cr(); 722 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page())); 723 st->cr(); 724 } 725 726 STEP(350, "(printing code cache information)" ) 727 728 if (_verbose && Universe::is_fully_initialized()) { 729 // print code cache information before vm abort 730 CodeCache::print_summary(st); 731 st->cr(); 732 } 733 734 STEP(360, "(printing ring buffers)" ) 735 736 if (_verbose) { 737 Events::print_all(st); 738 st->cr(); 739 } 740 741 STEP(370, "(printing dynamic libraries)" ) 742 743 if (_verbose) { 744 // dynamic libraries, or memory map 745 os::print_dll_info(st); 746 st->cr(); 747 } 748 749 STEP(380, "(printing VM options)" ) 750 751 if (_verbose) { 752 // VM options 753 Arguments::print_on(st); 754 st->cr(); 755 } 756 757 STEP(390, "(printing warning if internal testing API used)" ) 758 759 if (WhiteBox::used()) { 760 st->print_cr("Unsupported internal testing APIs have been used."); 761 st->cr(); 762 } 763 764 STEP(400, "(printing all environment variables)" ) 765 766 if (_verbose) { 767 os::print_environment_variables(st, env_list); 768 st->cr(); 769 } 770 771 STEP(410, "(printing signal handlers)" ) 772 773 if (_verbose) { 774 os::print_signal_handlers(st, buf, sizeof(buf)); 775 st->cr(); 776 } 777 778 STEP(420, "(Native Memory Tracking)" ) 779 if (_verbose) { 780 MemTracker::error_report(st); 781 } 782 783 STEP(430, "(printing system)" ) 784 785 if (_verbose) { 786 st->cr(); 787 st->print_cr("--------------- S Y S T E M ---------------"); 788 st->cr(); 789 } 790 791 STEP(440, "(printing OS information)" ) 792 793 if (_verbose) { 794 os::print_os_info(st); 795 st->cr(); 796 } 797 798 STEP(450, "(printing CPU info)" ) 799 if (_verbose) { 800 os::print_cpu_info(st, buf, sizeof(buf)); 801 st->cr(); 802 } 803 804 STEP(460, "(printing memory info)" ) 805 806 if (_verbose) { 807 os::print_memory_info(st); 808 st->cr(); 809 } 810 811 STEP(470, "(printing internal vm info)" ) 812 813 if (_verbose) { 814 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 815 st->cr(); 816 } 817 818 // print a defined marker to show that error handling finished correctly. 819 STEP(480, "(printing end marker)" ) 820 821 if (_verbose) { 822 st->print_cr("END."); 823 } 824 825 END 826 827 # undef BEGIN 828 # undef STEP 829 # undef END 830 } 831 832 // Report for the vm_info_cmd. This prints out the information above omitting 833 // crash and thread specific information. If output is added above, it should be added 834 // here also, if it is safe to call during a running process. 835 void VMError::print_vm_info(outputStream* st) { 836 837 char buf[O_BUFLEN]; 838 report_vm_version(st, buf, sizeof(buf)); 839 840 // STEP("(printing summary)") 841 842 st->cr(); 843 st->print_cr("--------------- S U M M A R Y ------------"); 844 st->cr(); 845 846 // STEP("(printing VM option summary)") 847 848 // VM options 849 Arguments::print_summary_on(st); 850 st->cr(); 851 852 // STEP("(printing summary machine and OS info)") 853 854 os::print_summary_info(st, buf, sizeof(buf)); 855 856 // STEP("(printing date and time)") 857 858 os::print_date_and_time(st, buf, sizeof(buf)); 859 860 // Skip: STEP("(printing thread)") 861 862 // STEP("(printing process)") 863 864 st->cr(); 865 st->print_cr("--------------- P R O C E S S ---------------"); 866 st->cr(); 867 868 // STEP("(printing number of OutOfMemoryError and StackOverflow exceptions)") 869 870 if (Exceptions::has_exception_counts()) { 871 st->print_cr("OutOfMemory and StackOverflow Exception counts:"); 872 Exceptions::print_exception_counts_on_error(st); 873 st->cr(); 874 } 875 876 // STEP("(printing compressed oops mode") 877 878 if (UseCompressedOops) { 879 Universe::print_compressed_oops_mode(st); 880 if (UseCompressedClassPointers) { 881 Metaspace::print_compressed_class_space(st); 882 } 883 st->cr(); 884 } 885 886 // STEP("(printing heap information)") 887 888 if (Universe::is_fully_initialized()) { 889 Universe::heap()->print_on_error(st); 890 st->cr(); 891 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page())); 892 st->cr(); 893 } 894 895 // STEP("(printing code cache information)") 896 897 if (Universe::is_fully_initialized()) { 898 // print code cache information before vm abort 899 CodeCache::print_summary(st); 900 st->cr(); 901 } 902 903 // STEP("(printing ring buffers)") 904 905 Events::print_all(st); 906 st->cr(); 907 908 // STEP("(printing dynamic libraries)") 909 910 // dynamic libraries, or memory map 911 os::print_dll_info(st); 912 st->cr(); 913 914 // STEP("(printing VM options)") 915 916 // VM options 917 Arguments::print_on(st); 918 st->cr(); 919 920 // STEP("(printing warning if internal testing API used)") 921 922 if (WhiteBox::used()) { 923 st->print_cr("Unsupported internal testing APIs have been used."); 924 st->cr(); 925 } 926 927 // STEP("(printing all environment variables)") 928 929 os::print_environment_variables(st, env_list); 930 st->cr(); 931 932 // STEP("(printing signal handlers)") 933 934 os::print_signal_handlers(st, buf, sizeof(buf)); 935 st->cr(); 936 937 // STEP("(Native Memory Tracking)") 938 939 MemTracker::error_report(st); 940 941 // STEP("(printing system)") 942 943 st->cr(); 944 st->print_cr("--------------- S Y S T E M ---------------"); 945 st->cr(); 946 947 // STEP("(printing OS information)") 948 949 os::print_os_info(st); 950 st->cr(); 951 952 // STEP("(printing CPU info)") 953 954 os::print_cpu_info(st, buf, sizeof(buf)); 955 st->cr(); 956 957 // STEP("(printing memory info)") 958 959 os::print_memory_info(st); 960 st->cr(); 961 962 // STEP("(printing internal vm info)") 963 964 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 965 st->cr(); 966 967 // print a defined marker to show that error handling finished correctly. 968 // STEP("(printing end marker)") 969 970 st->print_cr("END."); 971 } 972 973 volatile intptr_t VMError::first_error_tid = -1; 974 975 // An error could happen before tty is initialized or after it has been 976 // destroyed. Here we use a very simple unbuffered fdStream for printing. 977 // Only out.print_raw() and out.print_raw_cr() should be used, as other 978 // printing methods need to allocate large buffer on stack. To format a 979 // string, use jio_snprintf() with a static buffer or use staticBufferStream. 980 fdStream VMError::out(defaultStream::output_fd()); 981 fdStream VMError::log; // error log used by VMError::report_and_die() 982 983 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */ 984 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) { 985 int fd = -1; 986 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) { 987 // the O_EXCL flag will cause the open to fail if the file exists 988 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666); 989 } 990 return fd; 991 } 992 993 /** 994 * Construct file name for a log file and return it's file descriptor. 995 * Name and location depends on pattern, default_pattern params and access 996 * permissions. 997 */ 998 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) { 999 int fd = -1; 1000 1001 // If possible, use specified pattern to construct log file name 1002 if (pattern != NULL) { 1003 fd = expand_and_open(pattern, buf, buflen, 0); 1004 } 1005 1006 // Either user didn't specify, or the user's location failed, 1007 // so use the default name in the current directory 1008 if (fd == -1) { 1009 const char* cwd = os::get_current_directory(buf, buflen); 1010 if (cwd != NULL) { 1011 size_t pos = strlen(cwd); 1012 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator()); 1013 pos += fsep_len; 1014 if (fsep_len > 0) { 1015 fd = expand_and_open(default_pattern, buf, buflen, pos); 1016 } 1017 } 1018 } 1019 1020 // try temp directory if it exists. 1021 if (fd == -1) { 1022 const char* tmpdir = os::get_temp_directory(); 1023 if (tmpdir != NULL && strlen(tmpdir) > 0) { 1024 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator()); 1025 if (pos > 0) { 1026 fd = expand_and_open(default_pattern, buf, buflen, pos); 1027 } 1028 } 1029 } 1030 1031 return fd; 1032 } 1033 1034 int VMError::_id; 1035 const char* VMError::_message; 1036 char VMError::_detail_msg[1024]; 1037 Thread* VMError::_thread; 1038 address VMError::_pc; 1039 void* VMError::_siginfo; 1040 void* VMError::_context; 1041 const char* VMError::_filename; 1042 int VMError::_lineno; 1043 size_t VMError::_size; 1044 1045 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, 1046 void* context, const char* detail_fmt, ...) 1047 { 1048 va_list detail_args; 1049 va_start(detail_args, detail_fmt); 1050 report_and_die(sig, NULL, detail_fmt, detail_args, thread, pc, siginfo, context, NULL, 0, 0); 1051 va_end(detail_args); 1052 } 1053 1054 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) 1055 { 1056 report_and_die(thread, sig, pc, siginfo, context, "%s", ""); 1057 } 1058 1059 void VMError::report_and_die(const char* message, const char* detail_fmt, ...) 1060 { 1061 va_list detail_args; 1062 va_start(detail_args, detail_fmt); 1063 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, NULL, NULL, NULL, NULL, NULL, 0, 0); 1064 va_end(detail_args); 1065 } 1066 1067 void VMError::report_and_die(const char* message) 1068 { 1069 report_and_die(message, "%s", ""); 1070 } 1071 1072 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, const char* message, 1073 const char* detail_fmt, va_list detail_args) 1074 { 1075 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, 0); 1076 } 1077 1078 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, size_t size, 1079 VMErrorType vm_err_type, const char* detail_fmt, va_list detail_args) { 1080 report_and_die(vm_err_type, NULL, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, size); 1081 } 1082 1083 void VMError::report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args, 1084 Thread* thread, address pc, void* siginfo, void* context, const char* filename, 1085 int lineno, size_t size) 1086 { 1087 // Don't allocate large buffer on stack 1088 static char buffer[O_BUFLEN]; 1089 1090 // How many errors occurred in error handler when reporting first_error. 1091 static int recursive_error_count; 1092 1093 // We will first print a brief message to standard out (verbose = false), 1094 // then save detailed information in log file (verbose = true). 1095 static bool out_done = false; // done printing to standard out 1096 static bool log_done = false; // done saving error log 1097 static bool transmit_report_done = false; // done error reporting 1098 1099 if (SuppressFatalErrorMessage) { 1100 os::abort(CreateCoredumpOnCrash); 1101 } 1102 intptr_t mytid = os::current_thread_id(); 1103 if (first_error_tid == -1 && 1104 Atomic::cmpxchg_ptr(mytid, &first_error_tid, -1) == -1) { 1105 1106 _id = id; 1107 _message = message; 1108 _thread = thread; 1109 _pc = pc; 1110 _siginfo = siginfo; 1111 _context = context; 1112 _filename = filename; 1113 _lineno = lineno; 1114 _size = size; 1115 jio_vsnprintf(_detail_msg, sizeof(_detail_msg), detail_fmt, detail_args); 1116 1117 // first time 1118 set_error_reported(); 1119 1120 if (ShowMessageBoxOnError || PauseAtExit) { 1121 show_message_box(buffer, sizeof(buffer)); 1122 1123 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 1124 // WatcherThread can kill JVM if the error handler hangs. 1125 ShowMessageBoxOnError = false; 1126 } 1127 1128 os::check_dump_limit(buffer, sizeof(buffer)); 1129 1130 // reset signal handlers or exception filter; make sure recursive crashes 1131 // are handled properly. 1132 reset_signal_handlers(); 1133 1134 } else { 1135 // If UseOsErrorReporting we call this for each level of the call stack 1136 // while searching for the exception handler. Only the first level needs 1137 // to be reported. 1138 if (UseOSErrorReporting && log_done) return; 1139 1140 // This is not the first error, see if it happened in a different thread 1141 // or in the same thread during error reporting. 1142 if (first_error_tid != mytid) { 1143 char msgbuf[64]; 1144 jio_snprintf(msgbuf, sizeof(msgbuf), 1145 "[thread " INTX_FORMAT " also had an error]", 1146 mytid); 1147 out.print_raw_cr(msgbuf); 1148 1149 // error reporting is not MT-safe, block current thread 1150 os::infinite_sleep(); 1151 1152 } else { 1153 if (recursive_error_count++ > 30) { 1154 out.print_raw_cr("[Too many errors, abort]"); 1155 os::die(); 1156 } 1157 1158 jio_snprintf(buffer, sizeof(buffer), 1159 "[error occurred during error reporting %s, id 0x%x]", 1160 _current_step_info, _id); 1161 if (log.is_open()) { 1162 log.cr(); 1163 log.print_raw_cr(buffer); 1164 log.cr(); 1165 } else { 1166 out.cr(); 1167 out.print_raw_cr(buffer); 1168 out.cr(); 1169 } 1170 } 1171 } 1172 1173 // print to screen 1174 if (!out_done) { 1175 staticBufferStream sbs(buffer, sizeof(buffer), &out); 1176 report(&sbs, false); 1177 1178 out_done = true; 1179 1180 _current_step = 0; 1181 _current_step_info = ""; 1182 } 1183 1184 // print to error log file 1185 if (!log_done) { 1186 // see if log file is already open 1187 if (!log.is_open()) { 1188 // open log file 1189 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer)); 1190 if (fd != -1) { 1191 out.print_raw("# An error report file with more information is saved as:\n# "); 1192 out.print_raw_cr(buffer); 1193 1194 log.set_fd(fd); 1195 } else { 1196 out.print_raw_cr("# Can not save log file, dump to screen.."); 1197 log.set_fd(defaultStream::output_fd()); 1198 /* Error reporting currently needs dumpfile. 1199 * Maybe implement direct streaming in the future.*/ 1200 transmit_report_done = true; 1201 } 1202 } 1203 1204 staticBufferStream sbs(buffer, O_BUFLEN, &log); 1205 report(&sbs, true); 1206 _current_step = 0; 1207 _current_step_info = ""; 1208 1209 // Run error reporting to determine whether or not to report the crash. 1210 if (!transmit_report_done && should_report_bug(_id)) { 1211 transmit_report_done = true; 1212 const int fd2 = ::dup(log.fd()); 1213 FILE* const hs_err = ::fdopen(fd2, "r"); 1214 if (NULL != hs_err) { 1215 ErrorReporter er; 1216 er.call(hs_err, buffer, O_BUFLEN); 1217 } 1218 ::fclose(hs_err); 1219 } 1220 1221 if (log.fd() != defaultStream::output_fd()) { 1222 close(log.fd()); 1223 } 1224 1225 log.set_fd(-1); 1226 log_done = true; 1227 } 1228 1229 1230 static bool skip_OnError = false; 1231 if (!skip_OnError && OnError && OnError[0]) { 1232 skip_OnError = true; 1233 1234 out.print_raw_cr("#"); 1235 out.print_raw ("# -XX:OnError=\""); 1236 out.print_raw (OnError); 1237 out.print_raw_cr("\""); 1238 1239 char* cmd; 1240 const char* ptr = OnError; 1241 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1242 out.print_raw ("# Executing "); 1243 #if defined(LINUX) || defined(_ALLBSD_SOURCE) 1244 out.print_raw ("/bin/sh -c "); 1245 #elif defined(SOLARIS) 1246 out.print_raw ("/usr/bin/sh -c "); 1247 #endif 1248 out.print_raw ("\""); 1249 out.print_raw (cmd); 1250 out.print_raw_cr("\" ..."); 1251 1252 if (os::fork_and_exec(cmd) < 0) { 1253 out.print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1254 } 1255 } 1256 1257 // done with OnError 1258 OnError = NULL; 1259 } 1260 1261 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay 1262 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) { 1263 skip_replay = true; 1264 ciEnv* env = ciEnv::current(); 1265 if (env != NULL) { 1266 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer)); 1267 if (fd != -1) { 1268 FILE* replay_data_file = os::open(fd, "w"); 1269 if (replay_data_file != NULL) { 1270 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1271 env->dump_replay_data_unsafe(&replay_data_stream); 1272 out.print_raw("#\n# Compiler replay data is saved as:\n# "); 1273 out.print_raw_cr(buffer); 1274 } else { 1275 out.print_raw("#\n# Can't open file to dump replay data. Error: "); 1276 out.print_raw_cr(strerror(os::get_last_error())); 1277 } 1278 } 1279 } 1280 } 1281 1282 static bool skip_bug_url = !should_report_bug(_id); 1283 if (!skip_bug_url) { 1284 skip_bug_url = true; 1285 1286 out.print_raw_cr("#"); 1287 print_bug_submit_message(&out, _thread); 1288 } 1289 1290 if (!UseOSErrorReporting) { 1291 // os::abort() will call abort hooks, try it first. 1292 static bool skip_os_abort = false; 1293 if (!skip_os_abort) { 1294 skip_os_abort = true; 1295 bool dump_core = should_report_bug(_id); 1296 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context); 1297 } 1298 1299 // if os::abort() doesn't abort, try os::die(); 1300 os::die(); 1301 } 1302 } 1303 1304 /* 1305 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 1306 * ensures utilities such as jmap can observe the process is a consistent state. 1307 */ 1308 class VM_ReportJavaOutOfMemory : public VM_Operation { 1309 private: 1310 const char* _message; 1311 public: 1312 VM_ReportJavaOutOfMemory(const char* message) { _message = message; } 1313 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 1314 void doit(); 1315 }; 1316 1317 void VM_ReportJavaOutOfMemory::doit() { 1318 // Don't allocate large buffer on stack 1319 static char buffer[O_BUFLEN]; 1320 1321 tty->print_cr("#"); 1322 tty->print_cr("# java.lang.OutOfMemoryError: %s", _message); 1323 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 1324 1325 // make heap parsability 1326 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 1327 1328 char* cmd; 1329 const char* ptr = OnOutOfMemoryError; 1330 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1331 tty->print("# Executing "); 1332 #if defined(LINUX) 1333 tty->print ("/bin/sh -c "); 1334 #elif defined(SOLARIS) 1335 tty->print ("/usr/bin/sh -c "); 1336 #endif 1337 tty->print_cr("\"%s\"...", cmd); 1338 1339 if (os::fork_and_exec(cmd) < 0) { 1340 tty->print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1341 } 1342 } 1343 } 1344 1345 void VMError::report_java_out_of_memory(const char* message) { 1346 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { 1347 MutexLocker ml(Heap_lock); 1348 VM_ReportJavaOutOfMemory op(message); 1349 VMThread::execute(&op); 1350 } 1351 }