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(245, "(CDS archive access warning)" ) 601 602 // Print an explicit hint if we crashed on access to the CDS archive. 603 if (_verbose && _siginfo) { 604 check_failing_cds_access(st, _siginfo); 605 st->cr(); 606 } 607 608 STEP(250, "(printing register info)") 609 610 // decode register contents if possible 611 if (_verbose && _context && Universe::is_fully_initialized()) { 612 os::print_register_info(st, _context); 613 st->cr(); 614 } 615 616 STEP(260, "(printing registers, top of stack, instructions near pc)") 617 618 // registers, top of stack, instructions near pc 619 if (_verbose && _context) { 620 os::print_context(st, _context); 621 st->cr(); 622 } 623 624 STEP(265, "(printing code blob if possible)") 625 626 if (_verbose && _context) { 627 CodeBlob* cb = CodeCache::find_blob(_pc); 628 if (cb != NULL) { 629 if (Interpreter::contains(_pc)) { 630 // The interpreter CodeBlob is very large so try to print the codelet instead. 631 InterpreterCodelet* codelet = Interpreter::codelet_containing(_pc); 632 if (codelet != NULL) { 633 codelet->print_on(st); 634 Disassembler::decode(codelet->code_begin(), codelet->code_end(), st); 635 } 636 } else { 637 StubCodeDesc* desc = StubCodeDesc::desc_for(_pc); 638 if (desc != NULL) { 639 desc->print_on(st); 640 Disassembler::decode(desc->begin(), desc->end(), st); 641 } else { 642 Disassembler::decode(cb, st); 643 st->cr(); 644 } 645 } 646 } 647 } 648 649 STEP(270, "(printing VM operation)" ) 650 651 if (_verbose && _thread && _thread->is_VM_thread()) { 652 VMThread* t = (VMThread*)_thread; 653 VM_Operation* op = t->vm_operation(); 654 if (op) { 655 op->print_on_error(st); 656 st->cr(); 657 st->cr(); 658 } 659 } 660 661 STEP(280, "(printing process)" ) 662 663 if (_verbose) { 664 st->cr(); 665 st->print_cr("--------------- P R O C E S S ---------------"); 666 st->cr(); 667 } 668 669 STEP(290, "(printing all threads)" ) 670 671 // all threads 672 if (_verbose && _thread) { 673 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 674 st->cr(); 675 } 676 677 STEP(300, "(printing VM state)" ) 678 679 if (_verbose) { 680 // Safepoint state 681 st->print("VM state:"); 682 683 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 684 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 685 else st->print("not at safepoint"); 686 687 // Also see if error occurred during initialization or shutdown 688 if (!Universe::is_fully_initialized()) { 689 st->print(" (not fully initialized)"); 690 } else if (VM_Exit::vm_exited()) { 691 st->print(" (shutting down)"); 692 } else { 693 st->print(" (normal execution)"); 694 } 695 st->cr(); 696 st->cr(); 697 } 698 699 STEP(310, "(printing owned locks on error)" ) 700 701 // mutexes/monitors that currently have an owner 702 if (_verbose) { 703 print_owned_locks_on_error(st); 704 st->cr(); 705 } 706 707 STEP(320, "(printing number of OutOfMemoryError and StackOverflow exceptions)") 708 709 if (_verbose && Exceptions::has_exception_counts()) { 710 st->print_cr("OutOfMemory and StackOverflow Exception counts:"); 711 Exceptions::print_exception_counts_on_error(st); 712 st->cr(); 713 } 714 715 STEP(330, "(printing compressed oops mode") 716 717 if (_verbose && UseCompressedOops) { 718 Universe::print_compressed_oops_mode(st); 719 if (UseCompressedClassPointers) { 720 Metaspace::print_compressed_class_space(st); 721 } 722 st->cr(); 723 } 724 725 STEP(340, "(printing heap information)" ) 726 727 if (_verbose && Universe::is_fully_initialized()) { 728 Universe::heap()->print_on_error(st); 729 st->cr(); 730 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page())); 731 st->cr(); 732 } 733 734 STEP(350, "(printing code cache information)" ) 735 736 if (_verbose && Universe::is_fully_initialized()) { 737 // print code cache information before vm abort 738 CodeCache::print_summary(st); 739 st->cr(); 740 } 741 742 STEP(360, "(printing ring buffers)" ) 743 744 if (_verbose) { 745 Events::print_all(st); 746 st->cr(); 747 } 748 749 STEP(370, "(printing dynamic libraries)" ) 750 751 if (_verbose) { 752 // dynamic libraries, or memory map 753 os::print_dll_info(st); 754 st->cr(); 755 } 756 757 STEP(380, "(printing VM options)" ) 758 759 if (_verbose) { 760 // VM options 761 Arguments::print_on(st); 762 st->cr(); 763 } 764 765 STEP(390, "(printing warning if internal testing API used)" ) 766 767 if (WhiteBox::used()) { 768 st->print_cr("Unsupported internal testing APIs have been used."); 769 st->cr(); 770 } 771 772 STEP(400, "(printing all environment variables)" ) 773 774 if (_verbose) { 775 os::print_environment_variables(st, env_list); 776 st->cr(); 777 } 778 779 STEP(410, "(printing signal handlers)" ) 780 781 if (_verbose) { 782 os::print_signal_handlers(st, buf, sizeof(buf)); 783 st->cr(); 784 } 785 786 STEP(420, "(Native Memory Tracking)" ) 787 if (_verbose) { 788 MemTracker::error_report(st); 789 } 790 791 STEP(430, "(printing system)" ) 792 793 if (_verbose) { 794 st->cr(); 795 st->print_cr("--------------- S Y S T E M ---------------"); 796 st->cr(); 797 } 798 799 STEP(440, "(printing OS information)" ) 800 801 if (_verbose) { 802 os::print_os_info(st); 803 st->cr(); 804 } 805 806 STEP(450, "(printing CPU info)" ) 807 if (_verbose) { 808 os::print_cpu_info(st, buf, sizeof(buf)); 809 st->cr(); 810 } 811 812 STEP(460, "(printing memory info)" ) 813 814 if (_verbose) { 815 os::print_memory_info(st); 816 st->cr(); 817 } 818 819 STEP(470, "(printing internal vm info)" ) 820 821 if (_verbose) { 822 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 823 st->cr(); 824 } 825 826 // print a defined marker to show that error handling finished correctly. 827 STEP(480, "(printing end marker)" ) 828 829 if (_verbose) { 830 st->print_cr("END."); 831 } 832 833 END 834 835 # undef BEGIN 836 # undef STEP 837 # undef END 838 } 839 840 // Report for the vm_info_cmd. This prints out the information above omitting 841 // crash and thread specific information. If output is added above, it should be added 842 // here also, if it is safe to call during a running process. 843 void VMError::print_vm_info(outputStream* st) { 844 845 char buf[O_BUFLEN]; 846 report_vm_version(st, buf, sizeof(buf)); 847 848 // STEP("(printing summary)") 849 850 st->cr(); 851 st->print_cr("--------------- S U M M A R Y ------------"); 852 st->cr(); 853 854 // STEP("(printing VM option summary)") 855 856 // VM options 857 Arguments::print_summary_on(st); 858 st->cr(); 859 860 // STEP("(printing summary machine and OS info)") 861 862 os::print_summary_info(st, buf, sizeof(buf)); 863 864 // STEP("(printing date and time)") 865 866 os::print_date_and_time(st, buf, sizeof(buf)); 867 868 // Skip: STEP("(printing thread)") 869 870 // STEP("(printing process)") 871 872 st->cr(); 873 st->print_cr("--------------- P R O C E S S ---------------"); 874 st->cr(); 875 876 // STEP("(printing number of OutOfMemoryError and StackOverflow exceptions)") 877 878 if (Exceptions::has_exception_counts()) { 879 st->print_cr("OutOfMemory and StackOverflow Exception counts:"); 880 Exceptions::print_exception_counts_on_error(st); 881 st->cr(); 882 } 883 884 // STEP("(printing compressed oops mode") 885 886 if (UseCompressedOops) { 887 Universe::print_compressed_oops_mode(st); 888 if (UseCompressedClassPointers) { 889 Metaspace::print_compressed_class_space(st); 890 } 891 st->cr(); 892 } 893 894 // STEP("(printing heap information)") 895 896 if (Universe::is_fully_initialized()) { 897 Universe::heap()->print_on_error(st); 898 st->cr(); 899 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page())); 900 st->cr(); 901 } 902 903 // STEP("(printing code cache information)") 904 905 if (Universe::is_fully_initialized()) { 906 // print code cache information before vm abort 907 CodeCache::print_summary(st); 908 st->cr(); 909 } 910 911 // STEP("(printing ring buffers)") 912 913 Events::print_all(st); 914 st->cr(); 915 916 // STEP("(printing dynamic libraries)") 917 918 // dynamic libraries, or memory map 919 os::print_dll_info(st); 920 st->cr(); 921 922 // STEP("(printing VM options)") 923 924 // VM options 925 Arguments::print_on(st); 926 st->cr(); 927 928 // STEP("(printing warning if internal testing API used)") 929 930 if (WhiteBox::used()) { 931 st->print_cr("Unsupported internal testing APIs have been used."); 932 st->cr(); 933 } 934 935 // STEP("(printing all environment variables)") 936 937 os::print_environment_variables(st, env_list); 938 st->cr(); 939 940 // STEP("(printing signal handlers)") 941 942 os::print_signal_handlers(st, buf, sizeof(buf)); 943 st->cr(); 944 945 // STEP("(Native Memory Tracking)") 946 947 MemTracker::error_report(st); 948 949 // STEP("(printing system)") 950 951 st->cr(); 952 st->print_cr("--------------- S Y S T E M ---------------"); 953 st->cr(); 954 955 // STEP("(printing OS information)") 956 957 os::print_os_info(st); 958 st->cr(); 959 960 // STEP("(printing CPU info)") 961 962 os::print_cpu_info(st, buf, sizeof(buf)); 963 st->cr(); 964 965 // STEP("(printing memory info)") 966 967 os::print_memory_info(st); 968 st->cr(); 969 970 // STEP("(printing internal vm info)") 971 972 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 973 st->cr(); 974 975 // print a defined marker to show that error handling finished correctly. 976 // STEP("(printing end marker)") 977 978 st->print_cr("END."); 979 } 980 981 volatile intptr_t VMError::first_error_tid = -1; 982 983 // An error could happen before tty is initialized or after it has been 984 // destroyed. Here we use a very simple unbuffered fdStream for printing. 985 // Only out.print_raw() and out.print_raw_cr() should be used, as other 986 // printing methods need to allocate large buffer on stack. To format a 987 // string, use jio_snprintf() with a static buffer or use staticBufferStream. 988 fdStream VMError::out(defaultStream::output_fd()); 989 fdStream VMError::log; // error log used by VMError::report_and_die() 990 991 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */ 992 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) { 993 int fd = -1; 994 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) { 995 // the O_EXCL flag will cause the open to fail if the file exists 996 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666); 997 } 998 return fd; 999 } 1000 1001 /** 1002 * Construct file name for a log file and return it's file descriptor. 1003 * Name and location depends on pattern, default_pattern params and access 1004 * permissions. 1005 */ 1006 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) { 1007 int fd = -1; 1008 1009 // If possible, use specified pattern to construct log file name 1010 if (pattern != NULL) { 1011 fd = expand_and_open(pattern, buf, buflen, 0); 1012 } 1013 1014 // Either user didn't specify, or the user's location failed, 1015 // so use the default name in the current directory 1016 if (fd == -1) { 1017 const char* cwd = os::get_current_directory(buf, buflen); 1018 if (cwd != NULL) { 1019 size_t pos = strlen(cwd); 1020 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator()); 1021 pos += fsep_len; 1022 if (fsep_len > 0) { 1023 fd = expand_and_open(default_pattern, buf, buflen, pos); 1024 } 1025 } 1026 } 1027 1028 // try temp directory if it exists. 1029 if (fd == -1) { 1030 const char* tmpdir = os::get_temp_directory(); 1031 if (tmpdir != NULL && strlen(tmpdir) > 0) { 1032 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator()); 1033 if (pos > 0) { 1034 fd = expand_and_open(default_pattern, buf, buflen, pos); 1035 } 1036 } 1037 } 1038 1039 return fd; 1040 } 1041 1042 int VMError::_id; 1043 const char* VMError::_message; 1044 char VMError::_detail_msg[1024]; 1045 Thread* VMError::_thread; 1046 address VMError::_pc; 1047 void* VMError::_siginfo; 1048 void* VMError::_context; 1049 const char* VMError::_filename; 1050 int VMError::_lineno; 1051 size_t VMError::_size; 1052 1053 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, 1054 void* context, const char* detail_fmt, ...) 1055 { 1056 va_list detail_args; 1057 va_start(detail_args, detail_fmt); 1058 report_and_die(sig, NULL, detail_fmt, detail_args, thread, pc, siginfo, context, NULL, 0, 0); 1059 va_end(detail_args); 1060 } 1061 1062 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) 1063 { 1064 report_and_die(thread, sig, pc, siginfo, context, "%s", ""); 1065 } 1066 1067 void VMError::report_and_die(const char* message, const char* detail_fmt, ...) 1068 { 1069 va_list detail_args; 1070 va_start(detail_args, detail_fmt); 1071 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, NULL, NULL, NULL, NULL, NULL, 0, 0); 1072 va_end(detail_args); 1073 } 1074 1075 void VMError::report_and_die(const char* message) 1076 { 1077 report_and_die(message, "%s", ""); 1078 } 1079 1080 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, const char* message, 1081 const char* detail_fmt, va_list detail_args) 1082 { 1083 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, 0); 1084 } 1085 1086 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, size_t size, 1087 VMErrorType vm_err_type, const char* detail_fmt, va_list detail_args) { 1088 report_and_die(vm_err_type, NULL, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, size); 1089 } 1090 1091 void VMError::report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args, 1092 Thread* thread, address pc, void* siginfo, void* context, const char* filename, 1093 int lineno, size_t size) 1094 { 1095 // Don't allocate large buffer on stack 1096 static char buffer[O_BUFLEN]; 1097 1098 // How many errors occurred in error handler when reporting first_error. 1099 static int recursive_error_count; 1100 1101 // We will first print a brief message to standard out (verbose = false), 1102 // then save detailed information in log file (verbose = true). 1103 static bool out_done = false; // done printing to standard out 1104 static bool log_done = false; // done saving error log 1105 static bool transmit_report_done = false; // done error reporting 1106 1107 if (SuppressFatalErrorMessage) { 1108 os::abort(CreateCoredumpOnCrash); 1109 } 1110 intptr_t mytid = os::current_thread_id(); 1111 if (first_error_tid == -1 && 1112 Atomic::cmpxchg_ptr(mytid, &first_error_tid, -1) == -1) { 1113 1114 _id = id; 1115 _message = message; 1116 _thread = thread; 1117 _pc = pc; 1118 _siginfo = siginfo; 1119 _context = context; 1120 _filename = filename; 1121 _lineno = lineno; 1122 _size = size; 1123 jio_vsnprintf(_detail_msg, sizeof(_detail_msg), detail_fmt, detail_args); 1124 1125 // first time 1126 set_error_reported(); 1127 1128 if (ShowMessageBoxOnError || PauseAtExit) { 1129 show_message_box(buffer, sizeof(buffer)); 1130 1131 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 1132 // WatcherThread can kill JVM if the error handler hangs. 1133 ShowMessageBoxOnError = false; 1134 } 1135 1136 os::check_dump_limit(buffer, sizeof(buffer)); 1137 1138 // reset signal handlers or exception filter; make sure recursive crashes 1139 // are handled properly. 1140 reset_signal_handlers(); 1141 1142 } else { 1143 // If UseOsErrorReporting we call this for each level of the call stack 1144 // while searching for the exception handler. Only the first level needs 1145 // to be reported. 1146 if (UseOSErrorReporting && log_done) return; 1147 1148 // This is not the first error, see if it happened in a different thread 1149 // or in the same thread during error reporting. 1150 if (first_error_tid != mytid) { 1151 char msgbuf[64]; 1152 jio_snprintf(msgbuf, sizeof(msgbuf), 1153 "[thread " INTX_FORMAT " also had an error]", 1154 mytid); 1155 out.print_raw_cr(msgbuf); 1156 1157 // error reporting is not MT-safe, block current thread 1158 os::infinite_sleep(); 1159 1160 } else { 1161 if (recursive_error_count++ > 30) { 1162 out.print_raw_cr("[Too many errors, abort]"); 1163 os::die(); 1164 } 1165 1166 jio_snprintf(buffer, sizeof(buffer), 1167 "[error occurred during error reporting %s, id 0x%x]", 1168 _current_step_info, _id); 1169 if (log.is_open()) { 1170 log.cr(); 1171 log.print_raw_cr(buffer); 1172 log.cr(); 1173 } else { 1174 out.cr(); 1175 out.print_raw_cr(buffer); 1176 out.cr(); 1177 } 1178 } 1179 } 1180 1181 // print to screen 1182 if (!out_done) { 1183 staticBufferStream sbs(buffer, sizeof(buffer), &out); 1184 report(&sbs, false); 1185 1186 out_done = true; 1187 1188 _current_step = 0; 1189 _current_step_info = ""; 1190 } 1191 1192 // print to error log file 1193 if (!log_done) { 1194 // see if log file is already open 1195 if (!log.is_open()) { 1196 // open log file 1197 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer)); 1198 if (fd != -1) { 1199 out.print_raw("# An error report file with more information is saved as:\n# "); 1200 out.print_raw_cr(buffer); 1201 1202 log.set_fd(fd); 1203 } else { 1204 out.print_raw_cr("# Can not save log file, dump to screen.."); 1205 log.set_fd(defaultStream::output_fd()); 1206 /* Error reporting currently needs dumpfile. 1207 * Maybe implement direct streaming in the future.*/ 1208 transmit_report_done = true; 1209 } 1210 } 1211 1212 staticBufferStream sbs(buffer, O_BUFLEN, &log); 1213 report(&sbs, true); 1214 _current_step = 0; 1215 _current_step_info = ""; 1216 1217 // Run error reporting to determine whether or not to report the crash. 1218 if (!transmit_report_done && should_report_bug(_id)) { 1219 transmit_report_done = true; 1220 const int fd2 = ::dup(log.fd()); 1221 FILE* const hs_err = ::fdopen(fd2, "r"); 1222 if (NULL != hs_err) { 1223 ErrorReporter er; 1224 er.call(hs_err, buffer, O_BUFLEN); 1225 } 1226 ::fclose(hs_err); 1227 } 1228 1229 if (log.fd() != defaultStream::output_fd()) { 1230 close(log.fd()); 1231 } 1232 1233 log.set_fd(-1); 1234 log_done = true; 1235 } 1236 1237 1238 static bool skip_OnError = false; 1239 if (!skip_OnError && OnError && OnError[0]) { 1240 skip_OnError = true; 1241 1242 out.print_raw_cr("#"); 1243 out.print_raw ("# -XX:OnError=\""); 1244 out.print_raw (OnError); 1245 out.print_raw_cr("\""); 1246 1247 char* cmd; 1248 const char* ptr = OnError; 1249 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1250 out.print_raw ("# Executing "); 1251 #if defined(LINUX) || defined(_ALLBSD_SOURCE) 1252 out.print_raw ("/bin/sh -c "); 1253 #elif defined(SOLARIS) 1254 out.print_raw ("/usr/bin/sh -c "); 1255 #endif 1256 out.print_raw ("\""); 1257 out.print_raw (cmd); 1258 out.print_raw_cr("\" ..."); 1259 1260 if (os::fork_and_exec(cmd) < 0) { 1261 out.print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1262 } 1263 } 1264 1265 // done with OnError 1266 OnError = NULL; 1267 } 1268 1269 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay 1270 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) { 1271 skip_replay = true; 1272 ciEnv* env = ciEnv::current(); 1273 if (env != NULL) { 1274 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer)); 1275 if (fd != -1) { 1276 FILE* replay_data_file = os::open(fd, "w"); 1277 if (replay_data_file != NULL) { 1278 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1279 env->dump_replay_data_unsafe(&replay_data_stream); 1280 out.print_raw("#\n# Compiler replay data is saved as:\n# "); 1281 out.print_raw_cr(buffer); 1282 } else { 1283 out.print_raw("#\n# Can't open file to dump replay data. Error: "); 1284 out.print_raw_cr(strerror(os::get_last_error())); 1285 } 1286 } 1287 } 1288 } 1289 1290 static bool skip_bug_url = !should_report_bug(_id); 1291 if (!skip_bug_url) { 1292 skip_bug_url = true; 1293 1294 out.print_raw_cr("#"); 1295 print_bug_submit_message(&out, _thread); 1296 } 1297 1298 if (!UseOSErrorReporting) { 1299 // os::abort() will call abort hooks, try it first. 1300 static bool skip_os_abort = false; 1301 if (!skip_os_abort) { 1302 skip_os_abort = true; 1303 bool dump_core = should_report_bug(_id); 1304 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context); 1305 } 1306 1307 // if os::abort() doesn't abort, try os::die(); 1308 os::die(); 1309 } 1310 } 1311 1312 /* 1313 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 1314 * ensures utilities such as jmap can observe the process is a consistent state. 1315 */ 1316 class VM_ReportJavaOutOfMemory : public VM_Operation { 1317 private: 1318 const char* _message; 1319 public: 1320 VM_ReportJavaOutOfMemory(const char* message) { _message = message; } 1321 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 1322 void doit(); 1323 }; 1324 1325 void VM_ReportJavaOutOfMemory::doit() { 1326 // Don't allocate large buffer on stack 1327 static char buffer[O_BUFLEN]; 1328 1329 tty->print_cr("#"); 1330 tty->print_cr("# java.lang.OutOfMemoryError: %s", _message); 1331 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 1332 1333 // make heap parsability 1334 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 1335 1336 char* cmd; 1337 const char* ptr = OnOutOfMemoryError; 1338 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1339 tty->print("# Executing "); 1340 #if defined(LINUX) 1341 tty->print ("/bin/sh -c "); 1342 #elif defined(SOLARIS) 1343 tty->print ("/usr/bin/sh -c "); 1344 #endif 1345 tty->print_cr("\"%s\"...", cmd); 1346 1347 if (os::fork_and_exec(cmd) < 0) { 1348 tty->print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1349 } 1350 } 1351 } 1352 1353 void VMError::report_java_out_of_memory(const char* message) { 1354 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { 1355 MutexLocker ml(Heap_lock); 1356 VM_ReportJavaOutOfMemory op(message); 1357 VMThread::execute(&op); 1358 } 1359 } 1360 1361 void VMError::show_message_box(char *buf, int buflen) { 1362 bool yes; 1363 do { 1364 error_string(buf, buflen); 1365 yes = os::start_debugging(buf,buflen); 1366 } while (yes); 1367 }