1 /* 2 * Copyright (c) 2003, 2016, 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 const char* jdk_debug_level = Abstract_VM_Version::printable_jdk_debug_level() != NULL ? 237 Abstract_VM_Version::printable_jdk_debug_level() : ""; 238 239 st->print_cr("# JRE version: %s (%s) (%sbuild %s)", runtime_name, buf, 240 jdk_debug_level, runtime_version); 241 242 // This is the long version with some default settings added 243 st->print_cr("# Java VM: %s (%s%s, %s%s%s%s%s, %s, %s)", 244 Abstract_VM_Version::vm_name(), 245 jdk_debug_level, 246 Abstract_VM_Version::vm_release(), 247 Abstract_VM_Version::vm_info_string(), 248 TieredCompilation ? ", tiered" : "", 249 #if INCLUDE_JVMCI 250 EnableJVMCI ? ", jvmci" : "", 251 UseJVMCICompiler ? ", jvmci compiler" : "", 252 #else 253 "", "", 254 #endif 255 UseCompressedOops ? ", compressed oops" : "", 256 gc_mode(), 257 Abstract_VM_Version::vm_platform_string() 258 ); 259 } 260 261 // This is the main function to report a fatal error. Only one thread can 262 // call this function, so we don't need to worry about MT-safety. But it's 263 // possible that the error handler itself may crash or die on an internal 264 // error, for example, when the stack/heap is badly damaged. We must be 265 // able to handle recursive errors that happen inside error handler. 266 // 267 // Error reporting is done in several steps. If a crash or internal error 268 // occurred when reporting an error, the nested signal/exception handler 269 // can skip steps that are already (or partially) done. Error reporting will 270 // continue from the next step. This allows us to retrieve and print 271 // information that may be unsafe to get after a fatal error. If it happens, 272 // you may find nested report_and_die() frames when you look at the stack 273 // in a debugger. 274 // 275 // In general, a hang in error handler is much worse than a crash or internal 276 // error, as it's harder to recover from a hang. Deadlock can happen if we 277 // try to grab a lock that is already owned by current thread, or if the 278 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the 279 // error handler and all the functions it called should avoid grabbing any 280 // lock. An important thing to notice is that memory allocation needs a lock. 281 // 282 // We should avoid using large stack allocated buffers. Many errors happen 283 // when stack space is already low. Making things even worse is that there 284 // could be nested report_and_die() calls on stack (see above). Only one 285 // thread can report error, so large buffers are statically allocated in data 286 // segment. 287 288 int VMError::_current_step; 289 const char* VMError::_current_step_info; 290 291 void VMError::report(outputStream* st, bool _verbose) { 292 293 # define BEGIN if (_current_step == 0) { _current_step = 1; 294 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s; 295 # define END } 296 297 // don't allocate large buffer on stack 298 static char buf[O_BUFLEN]; 299 300 BEGIN 301 302 STEP(10, "(printing fatal error message)") 303 304 st->print_cr("#"); 305 if (should_report_bug(_id)) { 306 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:"); 307 } else { 308 st->print_cr("# There is insufficient memory for the Java " 309 "Runtime Environment to continue."); 310 } 311 312 #ifndef PRODUCT 313 // Error handler self tests 314 315 // test secondary error handling. Test it twice, to test that resetting 316 // error handler after a secondary crash works. 317 STEP(20, "(test secondary crash 1)") 318 if (_verbose && TestCrashInErrorHandler != 0) { 319 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...", 320 TestCrashInErrorHandler); 321 controlled_crash(TestCrashInErrorHandler); 322 } 323 324 STEP(30, "(test secondary crash 2)") 325 if (_verbose && TestCrashInErrorHandler != 0) { 326 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...", 327 TestCrashInErrorHandler); 328 controlled_crash(TestCrashInErrorHandler); 329 } 330 331 STEP(40, "(test safefetch in error handler)") 332 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice 333 // to test that resetting the signal handler works correctly. 334 if (_verbose && TestSafeFetchInErrorHandler) { 335 st->print_cr("Will test SafeFetch..."); 336 if (CanUseSafeFetch32()) { 337 int* const invalid_pointer = (int*) get_segfault_address(); 338 const int x = 0x76543210; 339 int i1 = SafeFetch32(invalid_pointer, x); 340 int i2 = SafeFetch32(invalid_pointer, x); 341 if (i1 == x && i2 == x) { 342 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern 343 } else { 344 st->print_cr("??"); 345 } 346 } else { 347 st->print_cr("not possible; skipped."); 348 } 349 } 350 #endif // PRODUCT 351 352 STEP(50, "(printing type of error)") 353 354 switch(_id) { 355 case OOM_MALLOC_ERROR: 356 case OOM_MMAP_ERROR: 357 if (_size) { 358 st->print("# Native memory allocation "); 359 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " : 360 "(mmap) failed to map "); 361 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size); 362 st->print("%s", buf); 363 st->print(" bytes"); 364 if (strlen(_detail_msg) > 0) { 365 st->print(" for "); 366 st->print("%s", _detail_msg); 367 } 368 st->cr(); 369 } else { 370 if (strlen(_detail_msg) > 0) { 371 st->print("# "); 372 st->print_cr("%s", _detail_msg); 373 } 374 } 375 // In error file give some solutions 376 if (_verbose) { 377 print_oom_reasons(st); 378 } else { 379 return; // that's enough for the screen 380 } 381 break; 382 case INTERNAL_ERROR: 383 default: 384 break; 385 } 386 387 STEP(60, "(printing exception/signal name)") 388 389 st->print_cr("#"); 390 st->print("# "); 391 // Is it an OS exception/signal? 392 if (os::exception_name(_id, buf, sizeof(buf))) { 393 st->print("%s", buf); 394 st->print(" (0x%x)", _id); // signal number 395 st->print(" at pc=" PTR_FORMAT, p2i(_pc)); 396 } else { 397 if (should_report_bug(_id)) { 398 st->print("Internal Error"); 399 } else { 400 st->print("Out of Memory Error"); 401 } 402 if (_filename != NULL && _lineno > 0) { 403 #ifdef PRODUCT 404 // In product mode chop off pathname? 405 char separator = os::file_separator()[0]; 406 const char *p = strrchr(_filename, separator); 407 const char *file = p ? p+1 : _filename; 408 #else 409 const char *file = _filename; 410 #endif 411 st->print(" (%s:%d)", file, _lineno); 412 } else { 413 st->print(" (0x%x)", _id); 414 } 415 } 416 417 STEP(70, "(printing current thread and pid)") 418 419 // process id, thread id 420 st->print(", pid=%d", os::current_process_id()); 421 st->print(", tid=" UINTX_FORMAT, os::current_thread_id()); 422 st->cr(); 423 424 STEP(80, "(printing error message)") 425 426 if (should_report_bug(_id)) { // already printed the message. 427 // error message 428 if (strlen(_detail_msg) > 0) { 429 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg); 430 } else if (_message) { 431 st->print_cr("# Error: %s", _message); 432 } 433 } 434 435 STEP(90, "(printing Java version string)") 436 437 report_vm_version(st, buf, sizeof(buf)); 438 439 STEP(100, "(printing problematic frame)") 440 441 // Print current frame if we have a context (i.e. it's a crash) 442 if (_context) { 443 st->print_cr("# Problematic frame:"); 444 st->print("# "); 445 frame fr = os::fetch_frame_from_context(_context); 446 fr.print_on_error(st, buf, sizeof(buf)); 447 st->cr(); 448 st->print_cr("#"); 449 } 450 451 STEP(110, "(printing core file information)") 452 st->print("# "); 453 if (CreateCoredumpOnCrash) { 454 if (coredump_status) { 455 st->print("Core dump will be written. Default location: %s", coredump_message); 456 } else { 457 st->print("No core dump will be written. %s", coredump_message); 458 } 459 } else { 460 st->print("CreateCoredumpOnCrash turned off, no core file dumped"); 461 } 462 st->cr(); 463 st->print_cr("#"); 464 465 STEP(120, "(printing bug submit message)") 466 467 if (should_report_bug(_id) && _verbose) { 468 print_bug_submit_message(st, _thread); 469 } 470 471 STEP(130, "(printing summary)" ) 472 473 if (_verbose) { 474 st->cr(); 475 st->print_cr("--------------- S U M M A R Y ------------"); 476 st->cr(); 477 } 478 479 STEP(140, "(printing VM option summary)" ) 480 481 if (_verbose) { 482 // VM options 483 Arguments::print_summary_on(st); 484 st->cr(); 485 } 486 487 STEP(150, "(printing summary machine and OS info)") 488 489 if (_verbose) { 490 os::print_summary_info(st, buf, sizeof(buf)); 491 } 492 493 494 STEP(160, "(printing date and time)" ) 495 496 if (_verbose) { 497 os::print_date_and_time(st, buf, sizeof(buf)); 498 } 499 500 STEP(170, "(printing thread)" ) 501 502 if (_verbose) { 503 st->cr(); 504 st->print_cr("--------------- T H R E A D ---------------"); 505 st->cr(); 506 } 507 508 STEP(180, "(printing current thread)" ) 509 510 // current thread 511 if (_verbose) { 512 if (_thread) { 513 st->print("Current thread (" PTR_FORMAT "): ", p2i(_thread)); 514 _thread->print_on_error(st, buf, sizeof(buf)); 515 st->cr(); 516 } else { 517 st->print_cr("Current thread is native thread"); 518 } 519 st->cr(); 520 } 521 522 STEP(190, "(printing current compile task)" ) 523 524 if (_verbose && _thread && _thread->is_Compiler_thread()) { 525 CompilerThread* t = (CompilerThread*)_thread; 526 if (t->task()) { 527 st->cr(); 528 st->print_cr("Current CompileTask:"); 529 t->task()->print_line_on_error(st, buf, sizeof(buf)); 530 st->cr(); 531 } 532 } 533 534 535 STEP(200, "(printing stack bounds)" ) 536 537 if (_verbose) { 538 st->print("Stack: "); 539 540 address stack_top; 541 size_t stack_size; 542 543 if (_thread) { 544 stack_top = _thread->stack_base(); 545 stack_size = _thread->stack_size(); 546 } else { 547 stack_top = os::current_stack_base(); 548 stack_size = os::current_stack_size(); 549 } 550 551 address stack_bottom = stack_top - stack_size; 552 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", p2i(stack_bottom), p2i(stack_top)); 553 554 frame fr = _context ? os::fetch_frame_from_context(_context) 555 : os::current_frame(); 556 557 if (fr.sp()) { 558 st->print(", sp=" PTR_FORMAT, p2i(fr.sp())); 559 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024); 560 st->print(", free space=" SIZE_FORMAT "k", free_stack_size); 561 } 562 563 st->cr(); 564 } 565 566 STEP(210, "(printing native stack)" ) 567 568 if (_verbose) { 569 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) { 570 // We have printed the native stack in platform-specific code 571 // Windows/x64 needs special handling. 572 } else { 573 frame fr = _context ? os::fetch_frame_from_context(_context) 574 : os::current_frame(); 575 576 print_native_stack(st, fr, _thread, buf, sizeof(buf)); 577 } 578 } 579 580 STEP(220, "(printing Java stack)" ) 581 582 if (_verbose && _thread && _thread->is_Java_thread()) { 583 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf)); 584 } 585 586 STEP(230, "(printing target Java thread stack)" ) 587 588 // printing Java thread stack trace if it is involved in GC crash 589 if (_verbose && _thread && (_thread->is_Named_thread())) { 590 JavaThread* jt = ((NamedThread *)_thread)->processed_thread(); 591 if (jt != NULL) { 592 st->print_cr("JavaThread " PTR_FORMAT " (nid = %d) was being processed", p2i(jt), jt->osthread()->thread_id()); 593 print_stack_trace(st, jt, buf, sizeof(buf), true); 594 } 595 } 596 597 STEP(240, "(printing siginfo)" ) 598 599 // signal no, signal code, address that caused the fault 600 if (_verbose && _siginfo) { 601 st->cr(); 602 os::print_siginfo(st, _siginfo); 603 st->cr(); 604 } 605 606 STEP(245, "(CDS archive access warning)" ) 607 608 // Print an explicit hint if we crashed on access to the CDS archive. 609 if (_verbose && _siginfo) { 610 check_failing_cds_access(st, _siginfo); 611 st->cr(); 612 } 613 614 STEP(250, "(printing register info)") 615 616 // decode register contents if possible 617 if (_verbose && _context && Universe::is_fully_initialized()) { 618 os::print_register_info(st, _context); 619 st->cr(); 620 } 621 622 STEP(260, "(printing registers, top of stack, instructions near pc)") 623 624 // registers, top of stack, instructions near pc 625 if (_verbose && _context) { 626 os::print_context(st, _context); 627 st->cr(); 628 } 629 630 STEP(265, "(printing code blob if possible)") 631 632 if (_verbose && _context) { 633 CodeBlob* cb = CodeCache::find_blob(_pc); 634 if (cb != NULL) { 635 if (Interpreter::contains(_pc)) { 636 // The interpreter CodeBlob is very large so try to print the codelet instead. 637 InterpreterCodelet* codelet = Interpreter::codelet_containing(_pc); 638 if (codelet != NULL) { 639 codelet->print_on(st); 640 Disassembler::decode(codelet->code_begin(), codelet->code_end(), st); 641 } 642 } else { 643 StubCodeDesc* desc = StubCodeDesc::desc_for(_pc); 644 if (desc != NULL) { 645 desc->print_on(st); 646 Disassembler::decode(desc->begin(), desc->end(), st); 647 } else { 648 Disassembler::decode(cb, st); 649 st->cr(); 650 } 651 } 652 } 653 } 654 655 STEP(270, "(printing VM operation)" ) 656 657 if (_verbose && _thread && _thread->is_VM_thread()) { 658 VMThread* t = (VMThread*)_thread; 659 VM_Operation* op = t->vm_operation(); 660 if (op) { 661 op->print_on_error(st); 662 st->cr(); 663 st->cr(); 664 } 665 } 666 667 STEP(280, "(printing process)" ) 668 669 if (_verbose) { 670 st->cr(); 671 st->print_cr("--------------- P R O C E S S ---------------"); 672 st->cr(); 673 } 674 675 STEP(290, "(printing all threads)" ) 676 677 // all threads 678 if (_verbose && _thread) { 679 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 680 st->cr(); 681 } 682 683 STEP(300, "(printing VM state)" ) 684 685 if (_verbose) { 686 // Safepoint state 687 st->print("VM state:"); 688 689 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 690 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 691 else st->print("not at safepoint"); 692 693 // Also see if error occurred during initialization or shutdown 694 if (!Universe::is_fully_initialized()) { 695 st->print(" (not fully initialized)"); 696 } else if (VM_Exit::vm_exited()) { 697 st->print(" (shutting down)"); 698 } else { 699 st->print(" (normal execution)"); 700 } 701 st->cr(); 702 st->cr(); 703 } 704 705 STEP(310, "(printing owned locks on error)" ) 706 707 // mutexes/monitors that currently have an owner 708 if (_verbose) { 709 print_owned_locks_on_error(st); 710 st->cr(); 711 } 712 713 STEP(320, "(printing number of OutOfMemoryError and StackOverflow exceptions)") 714 715 if (_verbose && Exceptions::has_exception_counts()) { 716 st->print_cr("OutOfMemory and StackOverflow Exception counts:"); 717 Exceptions::print_exception_counts_on_error(st); 718 st->cr(); 719 } 720 721 STEP(330, "(printing compressed oops mode") 722 723 if (_verbose && UseCompressedOops) { 724 Universe::print_compressed_oops_mode(st); 725 if (UseCompressedClassPointers) { 726 Metaspace::print_compressed_class_space(st); 727 } 728 st->cr(); 729 } 730 731 STEP(340, "(printing heap information)" ) 732 733 if (_verbose && Universe::is_fully_initialized()) { 734 Universe::heap()->print_on_error(st); 735 st->cr(); 736 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page())); 737 st->cr(); 738 } 739 740 STEP(350, "(printing code cache information)" ) 741 742 if (_verbose && Universe::is_fully_initialized()) { 743 // print code cache information before vm abort 744 CodeCache::print_summary(st); 745 st->cr(); 746 } 747 748 STEP(360, "(printing ring buffers)" ) 749 750 if (_verbose) { 751 Events::print_all(st); 752 st->cr(); 753 } 754 755 STEP(370, "(printing dynamic libraries)" ) 756 757 if (_verbose) { 758 // dynamic libraries, or memory map 759 os::print_dll_info(st); 760 st->cr(); 761 } 762 763 STEP(380, "(printing VM options)" ) 764 765 if (_verbose) { 766 // VM options 767 Arguments::print_on(st); 768 st->cr(); 769 } 770 771 STEP(390, "(printing warning if internal testing API used)" ) 772 773 if (WhiteBox::used()) { 774 st->print_cr("Unsupported internal testing APIs have been used."); 775 st->cr(); 776 } 777 778 STEP(400, "(printing all environment variables)" ) 779 780 if (_verbose) { 781 os::print_environment_variables(st, env_list); 782 st->cr(); 783 } 784 785 STEP(410, "(printing signal handlers)" ) 786 787 if (_verbose) { 788 os::print_signal_handlers(st, buf, sizeof(buf)); 789 st->cr(); 790 } 791 792 STEP(420, "(Native Memory Tracking)" ) 793 if (_verbose) { 794 MemTracker::error_report(st); 795 } 796 797 STEP(430, "(printing system)" ) 798 799 if (_verbose) { 800 st->cr(); 801 st->print_cr("--------------- S Y S T E M ---------------"); 802 st->cr(); 803 } 804 805 STEP(440, "(printing OS information)" ) 806 807 if (_verbose) { 808 os::print_os_info(st); 809 st->cr(); 810 } 811 812 STEP(450, "(printing CPU info)" ) 813 if (_verbose) { 814 os::print_cpu_info(st, buf, sizeof(buf)); 815 st->cr(); 816 } 817 818 STEP(460, "(printing memory info)" ) 819 820 if (_verbose) { 821 os::print_memory_info(st); 822 st->cr(); 823 } 824 825 STEP(470, "(printing internal vm info)" ) 826 827 if (_verbose) { 828 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 829 st->cr(); 830 } 831 832 // print a defined marker to show that error handling finished correctly. 833 STEP(480, "(printing end marker)" ) 834 835 if (_verbose) { 836 st->print_cr("END."); 837 } 838 839 END 840 841 # undef BEGIN 842 # undef STEP 843 # undef END 844 } 845 846 // Report for the vm_info_cmd. This prints out the information above omitting 847 // crash and thread specific information. If output is added above, it should be added 848 // here also, if it is safe to call during a running process. 849 void VMError::print_vm_info(outputStream* st) { 850 851 char buf[O_BUFLEN]; 852 report_vm_version(st, buf, sizeof(buf)); 853 854 // STEP("(printing summary)") 855 856 st->cr(); 857 st->print_cr("--------------- S U M M A R Y ------------"); 858 st->cr(); 859 860 // STEP("(printing VM option summary)") 861 862 // VM options 863 Arguments::print_summary_on(st); 864 st->cr(); 865 866 // STEP("(printing summary machine and OS info)") 867 868 os::print_summary_info(st, buf, sizeof(buf)); 869 870 // STEP("(printing date and time)") 871 872 os::print_date_and_time(st, buf, sizeof(buf)); 873 874 // Skip: STEP("(printing thread)") 875 876 // STEP("(printing process)") 877 878 st->cr(); 879 st->print_cr("--------------- P R O C E S S ---------------"); 880 st->cr(); 881 882 // STEP("(printing number of OutOfMemoryError and StackOverflow exceptions)") 883 884 if (Exceptions::has_exception_counts()) { 885 st->print_cr("OutOfMemory and StackOverflow Exception counts:"); 886 Exceptions::print_exception_counts_on_error(st); 887 st->cr(); 888 } 889 890 // STEP("(printing compressed oops mode") 891 892 if (UseCompressedOops) { 893 Universe::print_compressed_oops_mode(st); 894 if (UseCompressedClassPointers) { 895 Metaspace::print_compressed_class_space(st); 896 } 897 st->cr(); 898 } 899 900 // STEP("(printing heap information)") 901 902 if (Universe::is_fully_initialized()) { 903 Universe::heap()->print_on_error(st); 904 st->cr(); 905 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page())); 906 st->cr(); 907 } 908 909 // STEP("(printing code cache information)") 910 911 if (Universe::is_fully_initialized()) { 912 // print code cache information before vm abort 913 CodeCache::print_summary(st); 914 st->cr(); 915 } 916 917 // STEP("(printing ring buffers)") 918 919 Events::print_all(st); 920 st->cr(); 921 922 // STEP("(printing dynamic libraries)") 923 924 // dynamic libraries, or memory map 925 os::print_dll_info(st); 926 st->cr(); 927 928 // STEP("(printing VM options)") 929 930 // VM options 931 Arguments::print_on(st); 932 st->cr(); 933 934 // STEP("(printing warning if internal testing API used)") 935 936 if (WhiteBox::used()) { 937 st->print_cr("Unsupported internal testing APIs have been used."); 938 st->cr(); 939 } 940 941 // STEP("(printing all environment variables)") 942 943 os::print_environment_variables(st, env_list); 944 st->cr(); 945 946 // STEP("(printing signal handlers)") 947 948 os::print_signal_handlers(st, buf, sizeof(buf)); 949 st->cr(); 950 951 // STEP("(Native Memory Tracking)") 952 953 MemTracker::error_report(st); 954 955 // STEP("(printing system)") 956 957 st->cr(); 958 st->print_cr("--------------- S Y S T E M ---------------"); 959 st->cr(); 960 961 // STEP("(printing OS information)") 962 963 os::print_os_info(st); 964 st->cr(); 965 966 // STEP("(printing CPU info)") 967 968 os::print_cpu_info(st, buf, sizeof(buf)); 969 st->cr(); 970 971 // STEP("(printing memory info)") 972 973 os::print_memory_info(st); 974 st->cr(); 975 976 // STEP("(printing internal vm info)") 977 978 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 979 st->cr(); 980 981 // print a defined marker to show that error handling finished correctly. 982 // STEP("(printing end marker)") 983 984 st->print_cr("END."); 985 } 986 987 volatile intptr_t VMError::first_error_tid = -1; 988 989 // An error could happen before tty is initialized or after it has been 990 // destroyed. Here we use a very simple unbuffered fdStream for printing. 991 // Only out.print_raw() and out.print_raw_cr() should be used, as other 992 // printing methods need to allocate large buffer on stack. To format a 993 // string, use jio_snprintf() with a static buffer or use staticBufferStream. 994 fdStream VMError::out(defaultStream::output_fd()); 995 fdStream VMError::log; // error log used by VMError::report_and_die() 996 997 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */ 998 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) { 999 int fd = -1; 1000 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) { 1001 // the O_EXCL flag will cause the open to fail if the file exists 1002 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666); 1003 } 1004 return fd; 1005 } 1006 1007 /** 1008 * Construct file name for a log file and return it's file descriptor. 1009 * Name and location depends on pattern, default_pattern params and access 1010 * permissions. 1011 */ 1012 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) { 1013 int fd = -1; 1014 1015 // If possible, use specified pattern to construct log file name 1016 if (pattern != NULL) { 1017 fd = expand_and_open(pattern, buf, buflen, 0); 1018 } 1019 1020 // Either user didn't specify, or the user's location failed, 1021 // so use the default name in the current directory 1022 if (fd == -1) { 1023 const char* cwd = os::get_current_directory(buf, buflen); 1024 if (cwd != NULL) { 1025 size_t pos = strlen(cwd); 1026 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator()); 1027 pos += fsep_len; 1028 if (fsep_len > 0) { 1029 fd = expand_and_open(default_pattern, buf, buflen, pos); 1030 } 1031 } 1032 } 1033 1034 // try temp directory if it exists. 1035 if (fd == -1) { 1036 const char* tmpdir = os::get_temp_directory(); 1037 if (tmpdir != NULL && strlen(tmpdir) > 0) { 1038 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator()); 1039 if (pos > 0) { 1040 fd = expand_and_open(default_pattern, buf, buflen, pos); 1041 } 1042 } 1043 } 1044 1045 return fd; 1046 } 1047 1048 int VMError::_id; 1049 const char* VMError::_message; 1050 char VMError::_detail_msg[1024]; 1051 Thread* VMError::_thread; 1052 address VMError::_pc; 1053 void* VMError::_siginfo; 1054 void* VMError::_context; 1055 const char* VMError::_filename; 1056 int VMError::_lineno; 1057 size_t VMError::_size; 1058 1059 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, 1060 void* context, const char* detail_fmt, ...) 1061 { 1062 va_list detail_args; 1063 va_start(detail_args, detail_fmt); 1064 report_and_die(sig, NULL, detail_fmt, detail_args, thread, pc, siginfo, context, NULL, 0, 0); 1065 va_end(detail_args); 1066 } 1067 1068 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) 1069 { 1070 report_and_die(thread, sig, pc, siginfo, context, "%s", ""); 1071 } 1072 1073 void VMError::report_and_die(const char* message, const char* detail_fmt, ...) 1074 { 1075 va_list detail_args; 1076 va_start(detail_args, detail_fmt); 1077 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, NULL, NULL, NULL, NULL, NULL, 0, 0); 1078 va_end(detail_args); 1079 } 1080 1081 void VMError::report_and_die(const char* message) 1082 { 1083 report_and_die(message, "%s", ""); 1084 } 1085 1086 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, const char* message, 1087 const char* detail_fmt, va_list detail_args) 1088 { 1089 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, 0); 1090 } 1091 1092 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, size_t size, 1093 VMErrorType vm_err_type, const char* detail_fmt, va_list detail_args) { 1094 report_and_die(vm_err_type, NULL, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, size); 1095 } 1096 1097 void VMError::report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args, 1098 Thread* thread, address pc, void* siginfo, void* context, const char* filename, 1099 int lineno, size_t size) 1100 { 1101 // Don't allocate large buffer on stack 1102 static char buffer[O_BUFLEN]; 1103 1104 // How many errors occurred in error handler when reporting first_error. 1105 static int recursive_error_count; 1106 1107 // We will first print a brief message to standard out (verbose = false), 1108 // then save detailed information in log file (verbose = true). 1109 static bool out_done = false; // done printing to standard out 1110 static bool log_done = false; // done saving error log 1111 static bool transmit_report_done = false; // done error reporting 1112 1113 if (SuppressFatalErrorMessage) { 1114 os::abort(CreateCoredumpOnCrash); 1115 } 1116 intptr_t mytid = os::current_thread_id(); 1117 if (first_error_tid == -1 && 1118 Atomic::cmpxchg_ptr(mytid, &first_error_tid, -1) == -1) { 1119 1120 _id = id; 1121 _message = message; 1122 _thread = thread; 1123 _pc = pc; 1124 _siginfo = siginfo; 1125 _context = context; 1126 _filename = filename; 1127 _lineno = lineno; 1128 _size = size; 1129 jio_vsnprintf(_detail_msg, sizeof(_detail_msg), detail_fmt, detail_args); 1130 1131 // first time 1132 set_error_reported(); 1133 1134 if (ShowMessageBoxOnError || PauseAtExit) { 1135 show_message_box(buffer, sizeof(buffer)); 1136 1137 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 1138 // WatcherThread can kill JVM if the error handler hangs. 1139 ShowMessageBoxOnError = false; 1140 } 1141 1142 os::check_dump_limit(buffer, sizeof(buffer)); 1143 1144 // reset signal handlers or exception filter; make sure recursive crashes 1145 // are handled properly. 1146 reset_signal_handlers(); 1147 1148 } else { 1149 // If UseOsErrorReporting we call this for each level of the call stack 1150 // while searching for the exception handler. Only the first level needs 1151 // to be reported. 1152 if (UseOSErrorReporting && log_done) return; 1153 1154 // This is not the first error, see if it happened in a different thread 1155 // or in the same thread during error reporting. 1156 if (first_error_tid != mytid) { 1157 char msgbuf[64]; 1158 jio_snprintf(msgbuf, sizeof(msgbuf), 1159 "[thread " INTX_FORMAT " also had an error]", 1160 mytid); 1161 out.print_raw_cr(msgbuf); 1162 1163 // error reporting is not MT-safe, block current thread 1164 os::infinite_sleep(); 1165 1166 } else { 1167 if (recursive_error_count++ > 30) { 1168 out.print_raw_cr("[Too many errors, abort]"); 1169 os::die(); 1170 } 1171 1172 jio_snprintf(buffer, sizeof(buffer), 1173 "[error occurred during error reporting %s, id 0x%x]", 1174 _current_step_info, _id); 1175 if (log.is_open()) { 1176 log.cr(); 1177 log.print_raw_cr(buffer); 1178 log.cr(); 1179 } else { 1180 out.cr(); 1181 out.print_raw_cr(buffer); 1182 out.cr(); 1183 } 1184 } 1185 } 1186 1187 // print to screen 1188 if (!out_done) { 1189 staticBufferStream sbs(buffer, sizeof(buffer), &out); 1190 report(&sbs, false); 1191 1192 out_done = true; 1193 1194 _current_step = 0; 1195 _current_step_info = ""; 1196 } 1197 1198 // print to error log file 1199 if (!log_done) { 1200 // see if log file is already open 1201 if (!log.is_open()) { 1202 // open log file 1203 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer)); 1204 if (fd != -1) { 1205 out.print_raw("# An error report file with more information is saved as:\n# "); 1206 out.print_raw_cr(buffer); 1207 1208 log.set_fd(fd); 1209 } else { 1210 out.print_raw_cr("# Can not save log file, dump to screen.."); 1211 log.set_fd(defaultStream::output_fd()); 1212 /* Error reporting currently needs dumpfile. 1213 * Maybe implement direct streaming in the future.*/ 1214 transmit_report_done = true; 1215 } 1216 } 1217 1218 staticBufferStream sbs(buffer, O_BUFLEN, &log); 1219 report(&sbs, true); 1220 _current_step = 0; 1221 _current_step_info = ""; 1222 1223 // Run error reporting to determine whether or not to report the crash. 1224 if (!transmit_report_done && should_report_bug(_id)) { 1225 transmit_report_done = true; 1226 const int fd2 = ::dup(log.fd()); 1227 FILE* const hs_err = ::fdopen(fd2, "r"); 1228 if (NULL != hs_err) { 1229 ErrorReporter er; 1230 er.call(hs_err, buffer, O_BUFLEN); 1231 } 1232 ::fclose(hs_err); 1233 } 1234 1235 if (log.fd() != defaultStream::output_fd()) { 1236 close(log.fd()); 1237 } 1238 1239 log.set_fd(-1); 1240 log_done = true; 1241 } 1242 1243 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay 1244 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) { 1245 skip_replay = true; 1246 ciEnv* env = ciEnv::current(); 1247 if (env != NULL) { 1248 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer)); 1249 if (fd != -1) { 1250 FILE* replay_data_file = os::open(fd, "w"); 1251 if (replay_data_file != NULL) { 1252 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1253 env->dump_replay_data_unsafe(&replay_data_stream); 1254 out.print_raw("#\n# Compiler replay data is saved as:\n# "); 1255 out.print_raw_cr(buffer); 1256 } else { 1257 out.print_raw("#\n# Can't open file to dump replay data. Error: "); 1258 out.print_raw_cr(strerror(os::get_last_error())); 1259 } 1260 } 1261 } 1262 } 1263 1264 static bool skip_bug_url = !should_report_bug(_id); 1265 if (!skip_bug_url) { 1266 skip_bug_url = true; 1267 1268 out.print_raw_cr("#"); 1269 print_bug_submit_message(&out, _thread); 1270 } 1271 1272 static bool skip_OnError = false; 1273 if (!skip_OnError && OnError && OnError[0]) { 1274 skip_OnError = true; 1275 1276 // Flush output and finish logs before running OnError commands. 1277 ostream_abort(); 1278 1279 out.print_raw_cr("#"); 1280 out.print_raw ("# -XX:OnError=\""); 1281 out.print_raw (OnError); 1282 out.print_raw_cr("\""); 1283 1284 char* cmd; 1285 const char* ptr = OnError; 1286 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1287 out.print_raw ("# Executing "); 1288 #if defined(LINUX) || defined(_ALLBSD_SOURCE) 1289 out.print_raw ("/bin/sh -c "); 1290 #elif defined(SOLARIS) 1291 out.print_raw ("/usr/bin/sh -c "); 1292 #endif 1293 out.print_raw ("\""); 1294 out.print_raw (cmd); 1295 out.print_raw_cr("\" ..."); 1296 1297 if (os::fork_and_exec(cmd) < 0) { 1298 out.print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1299 } 1300 } 1301 1302 // done with OnError 1303 OnError = NULL; 1304 } 1305 1306 if (!UseOSErrorReporting) { 1307 // os::abort() will call abort hooks, try it first. 1308 static bool skip_os_abort = false; 1309 if (!skip_os_abort) { 1310 skip_os_abort = true; 1311 bool dump_core = should_report_bug(_id); 1312 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context); 1313 } 1314 1315 // if os::abort() doesn't abort, try os::die(); 1316 os::die(); 1317 } 1318 } 1319 1320 /* 1321 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 1322 * ensures utilities such as jmap can observe the process is a consistent state. 1323 */ 1324 class VM_ReportJavaOutOfMemory : public VM_Operation { 1325 private: 1326 const char* _message; 1327 public: 1328 VM_ReportJavaOutOfMemory(const char* message) { _message = message; } 1329 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 1330 void doit(); 1331 }; 1332 1333 void VM_ReportJavaOutOfMemory::doit() { 1334 // Don't allocate large buffer on stack 1335 static char buffer[O_BUFLEN]; 1336 1337 tty->print_cr("#"); 1338 tty->print_cr("# java.lang.OutOfMemoryError: %s", _message); 1339 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 1340 1341 // make heap parsability 1342 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 1343 1344 char* cmd; 1345 const char* ptr = OnOutOfMemoryError; 1346 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1347 tty->print("# Executing "); 1348 #if defined(LINUX) 1349 tty->print ("/bin/sh -c "); 1350 #elif defined(SOLARIS) 1351 tty->print ("/usr/bin/sh -c "); 1352 #endif 1353 tty->print_cr("\"%s\"...", cmd); 1354 1355 if (os::fork_and_exec(cmd) < 0) { 1356 tty->print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno); 1357 } 1358 } 1359 } 1360 1361 void VMError::report_java_out_of_memory(const char* message) { 1362 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { 1363 MutexLocker ml(Heap_lock); 1364 VM_ReportJavaOutOfMemory op(message); 1365 VMThread::execute(&op); 1366 } 1367 } 1368 1369 void VMError::show_message_box(char *buf, int buflen) { 1370 bool yes; 1371 do { 1372 error_string(buf, buflen); 1373 yes = os::start_debugging(buf,buflen); 1374 } while (yes); 1375 }