1 /*
2 * Copyright (c) 2003, 2019, 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 "compiler/compileBroker.hpp"
28 #include "gc_interface/collectedHeap.hpp"
29 #include "jfr/jfrEvents.hpp"
30 #include "prims/whitebox.hpp"
31 #include "runtime/arguments.hpp"
32 #include "runtime/frame.inline.hpp"
33 #include "runtime/init.hpp"
34 #include "runtime/os.hpp"
35 #include "runtime/thread.inline.hpp"
36 #include "runtime/vmThread.hpp"
37 #include "runtime/vm_operations.hpp"
38 #include "services/memTracker.hpp"
39 #include "utilities/debug.hpp"
40 #include "utilities/decoder.hpp"
41 #include "utilities/defaultStream.hpp"
42 #include "utilities/errorReporter.hpp"
43 #include "utilities/events.hpp"
44 #include "utilities/top.hpp"
45 #include "utilities/vmError.hpp"
46 #include "utilities/macros.hpp"
47 #if INCLUDE_JFR
48 #include "jfr/jfr.hpp"
49 #endif
50
51 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
52
53 // List of environment variables that should be reported in error log file.
54 const char *env_list[] = {
55 // All platforms
56 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
57 "JAVA_COMPILER", "PATH", "USERNAME",
58
59 // Env variables that are defined on Solaris/Linux/BSD
60 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
61 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
62
63 // defined on Linux
64 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
65
66 // defined on Darwin
67 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
68 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
69 "DYLD_INSERT_LIBRARIES",
70
71 // defined on Windows
72 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
73
74 (const char *)0
75 };
76
77 // Fatal error handler for internal errors and crashes.
78 //
79 // The default behavior of fatal error handler is to print a brief message
80 // to standard out (defaultStream::output_fd()), then save detailed information
81 // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple
82 // threads are having troubles at the same time, only one error is reported.
83 // The thread that is reporting error will abort VM when it is done, all other
84 // threads are blocked forever inside report_and_die().
85
86 // Constructor for crashes
87 VMError::VMError(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) {
88 _thread = thread;
89 _id = sig;
90 _pc = pc;
91 _siginfo = siginfo;
92 _context = context;
93
94 _verbose = false;
95 _current_step = 0;
96 _current_step_info = NULL;
97
98 _message = NULL;
99 _detail_msg = NULL;
100 _filename = NULL;
101 _lineno = 0;
102
103 _size = 0;
104 }
105
106 // Constructor for internal errors
107 VMError::VMError(Thread* thread, const char* filename, int lineno,
108 const char* message, const char * detail_msg)
109 {
110 _thread = thread;
111 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal
112 _filename = filename;
113 _lineno = lineno;
114 _message = message;
115 _detail_msg = detail_msg;
116
117 _verbose = false;
118 _current_step = 0;
119 _current_step_info = NULL;
120
121 _pc = NULL;
122 _siginfo = NULL;
123 _context = NULL;
124
125 _size = 0;
126 }
127
128 // Constructor for OOM errors
129 VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size,
130 VMErrorType vm_err_type, const char* message) {
131 _thread = thread;
132 _id = vm_err_type; // Value that's not an OS exception/signal
133 _filename = filename;
134 _lineno = lineno;
135 _message = message;
136 _detail_msg = NULL;
137
138 _verbose = false;
139 _current_step = 0;
140 _current_step_info = NULL;
141
142 _pc = NULL;
143 _siginfo = NULL;
144 _context = NULL;
145
146 _size = size;
147 }
148
149
150 // Constructor for non-fatal errors
151 VMError::VMError(const char* message) {
152 _thread = NULL;
153 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal
154 _filename = NULL;
155 _lineno = 0;
156 _message = message;
157 _detail_msg = NULL;
158
159 _verbose = false;
160 _current_step = 0;
161 _current_step_info = NULL;
162
163 _pc = NULL;
164 _siginfo = NULL;
165 _context = NULL;
166
167 _size = 0;
168 }
169
170 // -XX:OnError=<string>, where <string> can be a list of commands, separated
171 // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by
172 // a single "%". Some examples:
173 //
174 // -XX:OnError="pmap %p" // show memory map
175 // -XX:OnError="gcore %p; dbx - %p" // dump core and launch debugger
176 // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com"
177 // -XX:OnError="kill -9 %p" // ?#!@#
178
179 // A simple parser for -XX:OnError, usage:
180 // ptr = OnError;
181 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
182 // ... ...
183 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
184 if (ptr == NULL || *ptr == NULL) return NULL;
185
186 const char* cmd = *ptr;
187
188 // skip leading blanks or ';'
189 while (*cmd == ' ' || *cmd == ';') cmd++;
190
191 if (*cmd == '\0') return NULL;
192
193 const char * cmdend = cmd;
194 while (*cmdend != '\0' && *cmdend != ';') cmdend++;
195
196 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
197
198 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
199 return buf;
200 }
201
202
203 static void print_bug_submit_message(outputStream *out, Thread *thread) {
204 if (out == NULL) return;
205 out->print_raw_cr("# If you would like to submit a bug report, please visit:");
206 out->print_raw ("# ");
207 out->print_raw_cr(Arguments::java_vendor_url_bug());
208 // If the crash is in native code, encourage user to submit a bug to the
209 // provider of that code.
210 if (thread && thread->is_Java_thread() &&
211 !thread->is_hidden_from_external_view()) {
212 JavaThread* jt = (JavaThread*)thread;
213 if (jt->thread_state() == _thread_in_native) {
214 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
215 }
216 }
217 out->print_raw_cr("#");
218 }
219
220 bool VMError::coredump_status;
221 char VMError::coredump_message[O_BUFLEN];
222
223 void VMError::report_coredump_status(const char* message, bool status) {
224 coredump_status = status;
225 strncpy(coredump_message, message, sizeof(coredump_message));
226 coredump_message[sizeof(coredump_message)-1] = 0;
227 }
228
229
230 // Return a string to describe the error
231 char* VMError::error_string(char* buf, int buflen) {
232 char signame_buf[64];
233 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
234
235 if (signame) {
236 jio_snprintf(buf, buflen,
237 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" INTPTR_FORMAT,
238 signame, _id, _pc,
239 os::current_process_id(), os::current_thread_id());
240 } else if (_filename != NULL && _lineno > 0) {
241 // skip directory names
242 char separator = os::file_separator()[0];
243 const char *p = strrchr(_filename, separator);
244 int n = jio_snprintf(buf, buflen,
245 "Internal Error at %s:%d, pid=%d, tid=" INTPTR_FORMAT,
246 p ? p + 1 : _filename, _lineno,
247 os::current_process_id(), os::current_thread_id());
248 if (n >= 0 && n < buflen && _message) {
249 if (_detail_msg) {
250 jio_snprintf(buf + n, buflen - n, "%s%s: %s",
251 os::line_separator(), _message, _detail_msg);
252 } else {
253 jio_snprintf(buf + n, buflen - n, "%sError: %s",
254 os::line_separator(), _message);
255 }
256 }
257 } else {
258 jio_snprintf(buf, buflen,
259 "Internal Error (0x%x), pid=%d, tid=" INTPTR_FORMAT,
260 _id, os::current_process_id(), os::current_thread_id());
261 }
262
263 return buf;
264 }
265
266 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
267 char* buf, int buflen, bool verbose) {
268 #ifdef ZERO
269 if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
270 // StackFrameStream uses the frame anchor, which may not have
271 // been set up. This can be done at any time in Zero, however,
272 // so if it hasn't been set up then we just set it up now and
273 // clear it again when we're done.
274 bool has_last_Java_frame = jt->has_last_Java_frame();
275 if (!has_last_Java_frame)
276 jt->set_last_Java_frame();
277 st->print("Java frames:");
278
279 // If the top frame is a Shark frame and the frame anchor isn't
280 // set up then it's possible that the information in the frame
281 // is garbage: it could be from a previous decache, or it could
282 // simply have never been written. So we print a warning...
283 StackFrameStream sfs(jt);
284 if (!has_last_Java_frame && !sfs.is_done()) {
285 if (sfs.current()->zeroframe()->is_shark_frame()) {
286 st->print(" (TOP FRAME MAY BE JUNK)");
287 }
288 }
289 st->cr();
290
291 // Print the frames
292 for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
293 sfs.current()->zero_print_on_error(i, st, buf, buflen);
294 st->cr();
295 }
296
297 // Reset the frame anchor if necessary
298 if (!has_last_Java_frame)
299 jt->reset_last_Java_frame();
300 }
301 #else
302 if (jt->has_last_Java_frame()) {
303 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
304 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
305 sfs.current()->print_on_error(st, buf, buflen, verbose);
306 st->cr();
307 }
308 }
309 #endif // ZERO
310 }
311
312 static void print_oom_reasons(outputStream* st) {
313 st->print_cr("# Possible reasons:");
314 st->print_cr("# The system is out of physical RAM or swap space");
315 if (UseCompressedOops) {
316 st->print_cr("# The process is running with CompressedOops enabled, and the Java Heap may be blocking the growth of the native heap");
317 }
318 if (LogBytesPerWord == 2) {
319 st->print_cr("# In 32 bit mode, the process size limit was hit");
320 }
321 st->print_cr("# Possible solutions:");
322 st->print_cr("# Reduce memory load on the system");
323 st->print_cr("# Increase physical memory or swap space");
324 st->print_cr("# Check if swap backing store is full");
325 if (LogBytesPerWord == 2) {
326 st->print_cr("# Use 64 bit Java on a 64 bit OS");
327 }
328 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)");
329 st->print_cr("# Decrease number of Java threads");
330 st->print_cr("# Decrease Java thread stack sizes (-Xss)");
331 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize=");
332 if (UseCompressedOops) {
333 switch (Universe::narrow_oop_mode()) {
334 case Universe::UnscaledNarrowOop:
335 st->print_cr("# JVM is running with Unscaled Compressed Oops mode in which the Java heap is");
336 st->print_cr("# placed in the first 4GB address space. The Java Heap base address is the");
337 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
338 st->print_cr("# to set the Java Heap base and to place the Java Heap above 4GB virtual address.");
339 break;
340 case Universe::ZeroBasedNarrowOop:
341 st->print_cr("# JVM is running with Zero Based Compressed Oops mode in which the Java heap is");
342 st->print_cr("# placed in the first 32GB address space. The Java Heap base address is the");
343 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
344 st->print_cr("# to set the Java Heap base and to place the Java Heap above 32GB virtual address.");
345 break;
346 default:
347 break;
348 }
349 }
350 st->print_cr("# This output file may be truncated or incomplete.");
351 }
352
353 // This is the main function to report a fatal error. Only one thread can
354 // call this function, so we don't need to worry about MT-safety. But it's
355 // possible that the error handler itself may crash or die on an internal
356 // error, for example, when the stack/heap is badly damaged. We must be
357 // able to handle recursive errors that happen inside error handler.
358 //
359 // Error reporting is done in several steps. If a crash or internal error
360 // occurred when reporting an error, the nested signal/exception handler
361 // can skip steps that are already (or partially) done. Error reporting will
362 // continue from the next step. This allows us to retrieve and print
363 // information that may be unsafe to get after a fatal error. If it happens,
364 // you may find nested report_and_die() frames when you look at the stack
365 // in a debugger.
366 //
367 // In general, a hang in error handler is much worse than a crash or internal
368 // error, as it's harder to recover from a hang. Deadlock can happen if we
369 // try to grab a lock that is already owned by current thread, or if the
370 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
371 // error handler and all the functions it called should avoid grabbing any
372 // lock. An important thing to notice is that memory allocation needs a lock.
373 //
374 // We should avoid using large stack allocated buffers. Many errors happen
375 // when stack space is already low. Making things even worse is that there
376 // could be nested report_and_die() calls on stack (see above). Only one
377 // thread can report error, so large buffers are statically allocated in data
378 // segment.
379
380 void VMError::report(outputStream* st) {
381 # define BEGIN if (_current_step == 0) { _current_step = 1;
382 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s;
383 # define END }
384
385 // don't allocate large buffer on stack
386 static char buf[O_BUFLEN];
387
388 BEGIN
389
390 STEP(10, "(printing fatal error message)")
391
392 st->print_cr("#");
393 if (should_report_bug(_id)) {
394 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
395 } else {
396 st->print_cr("# There is insufficient memory for the Java "
397 "Runtime Environment to continue.");
398 }
399
400 STEP(15, "(printing type of error)")
401
402 switch(_id) {
403 case OOM_MALLOC_ERROR:
404 case OOM_MMAP_ERROR:
405 if (_size) {
406 st->print("# Native memory allocation ");
407 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
408 "(mmap) failed to map ");
409 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
410 st->print("%s", buf);
411 st->print(" bytes");
412 if (_message != NULL) {
413 st->print(" for ");
414 st->print("%s", _message);
415 }
416 st->cr();
417 } else {
418 if (_message != NULL)
419 st->print("# ");
420 st->print_cr("%s", _message);
421 }
422 // In error file give some solutions
423 if (_verbose) {
424 print_oom_reasons(st);
425 } else {
426 return; // that's enough for the screen
427 }
428 break;
429 case INTERNAL_ERROR:
430 default:
431 break;
432 }
433
434 STEP(20, "(printing exception/signal name)")
435
436 st->print_cr("#");
437 st->print("# ");
438 // Is it an OS exception/signal?
439 if (os::exception_name(_id, buf, sizeof(buf))) {
440 st->print("%s", buf);
441 st->print(" (0x%x)", _id); // signal number
442 st->print(" at pc=" PTR_FORMAT, _pc);
443 } else {
444 if (should_report_bug(_id)) {
445 st->print("Internal Error");
446 } else {
447 st->print("Out of Memory Error");
448 }
449 if (_filename != NULL && _lineno > 0) {
450 #ifdef PRODUCT
451 // In product mode chop off pathname?
452 char separator = os::file_separator()[0];
453 const char *p = strrchr(_filename, separator);
454 const char *file = p ? p+1 : _filename;
455 #else
456 const char *file = _filename;
457 #endif
458 size_t len = strlen(file);
459 size_t buflen = sizeof(buf);
460
461 strncpy(buf, file, buflen);
462 if (len + 10 < buflen) {
463 sprintf(buf + len, ":%d", _lineno);
464 }
465 st->print(" (%s)", buf);
466 } else {
467 st->print(" (0x%x)", _id);
468 }
469 }
470
471 STEP(30, "(printing current thread and pid)")
472
473 // process id, thread id
474 st->print(", pid=%d", os::current_process_id());
475 st->print(", tid=" INTPTR_FORMAT, os::current_thread_id());
476 st->cr();
477
478 STEP(40, "(printing error message)")
479
480 if (should_report_bug(_id)) { // already printed the message.
481 // error message
482 if (_detail_msg) {
483 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg);
484 } else if (_message) {
485 st->print_cr("# Error: %s", _message);
486 }
487 }
488
489 STEP(50, "(printing Java version string)")
490
491 // VM version
492 st->print_cr("#");
493 JDK_Version::current().to_string(buf, sizeof(buf));
494 const char* runtime_name = JDK_Version::runtime_name() != NULL ?
495 JDK_Version::runtime_name() : "";
496 const char* runtime_version = JDK_Version::runtime_version() != NULL ?
497 JDK_Version::runtime_version() : "";
498 st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version);
499 st->print_cr("# Java VM: %s (%s %s %s %s)",
500 Abstract_VM_Version::vm_name(),
501 Abstract_VM_Version::vm_release(),
502 Abstract_VM_Version::vm_info_string(),
503 Abstract_VM_Version::vm_platform_string(),
504 UseCompressedOops ? "compressed oops" : ""
505 );
506
507 STEP(60, "(printing problematic frame)")
508
509 // Print current frame if we have a context (i.e. it's a crash)
510 if (_context) {
511 st->print_cr("# Problematic frame:");
512 st->print("# ");
513 frame fr = os::fetch_frame_from_context(_context);
514 fr.print_on_error(st, buf, sizeof(buf));
515 st->cr();
516 st->print_cr("#");
517 }
518 STEP(63, "(printing core file information)")
519 st->print("# ");
520 if (coredump_status) {
521 st->print("Core dump written. Default location: %s", coredump_message);
522 } else {
523 st->print("Failed to write core dump. %s", coredump_message);
524 }
525 st->cr();
526 st->print_cr("#");
527
528 STEP(65, "(printing bug submit message)")
529
530 if (should_report_bug(_id) && _verbose) {
531 print_bug_submit_message(st, _thread);
532 }
533
534 STEP(70, "(printing thread)" )
535
536 if (_verbose) {
537 st->cr();
538 st->print_cr("--------------- T H R E A D ---------------");
539 st->cr();
540 }
541
542 STEP(80, "(printing current thread)" )
543
544 // current thread
545 if (_verbose) {
546 if (_thread) {
547 st->print("Current thread (" PTR_FORMAT "): ", _thread);
548 _thread->print_on_error(st, buf, sizeof(buf));
549 st->cr();
550 } else {
551 st->print_cr("Current thread is native thread");
552 }
553 st->cr();
554 }
555
556 STEP(90, "(printing siginfo)" )
557
558 // signal no, signal code, address that caused the fault
559 if (_verbose && _siginfo) {
560 os::print_siginfo(st, _siginfo);
561 st->cr();
562 }
563
564 STEP(100, "(printing registers, top of stack, instructions near pc)")
565
566 // registers, top of stack, instructions near pc
567 if (_verbose && _context) {
568 os::print_context(st, _context);
569 st->cr();
570 }
571
572 STEP(105, "(printing register info)")
573
574 // decode register contents if possible
575 if (_verbose && _context && Universe::is_fully_initialized()) {
576 os::print_register_info(st, _context);
577 st->cr();
578 }
579
580 STEP(110, "(printing stack bounds)" )
581
582 if (_verbose) {
583 st->print("Stack: ");
584
585 address stack_top;
586 size_t stack_size;
587
588 if (_thread) {
589 stack_top = _thread->stack_base();
590 stack_size = _thread->stack_size();
591 } else {
592 stack_top = os::current_stack_base();
593 stack_size = os::current_stack_size();
594 }
595
596 address stack_bottom = stack_top - stack_size;
597 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top);
598
599 frame fr = _context ? os::fetch_frame_from_context(_context)
600 : os::current_frame();
601
602 if (fr.sp()) {
603 st->print(", sp=" PTR_FORMAT, fr.sp());
604 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
605 st->print(", free space=" SIZE_FORMAT "k", free_stack_size);
606 }
607
608 st->cr();
609 }
610
611 STEP(120, "(printing native stack)" )
612
613 if (_verbose) {
614 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
615 // We have printed the native stack in platform-specific code
616 // Windows/x64 needs special handling.
617 } else {
618 frame fr = _context ? os::fetch_frame_from_context(_context)
619 : os::current_frame();
620
621 print_native_stack(st, fr, _thread, buf, sizeof(buf));
622 }
623 }
624
625 STEP(130, "(printing Java stack)" )
626
627 if (_verbose && _thread && _thread->is_Java_thread()) {
628 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
629 }
630
631 STEP(135, "(printing target Java thread stack)" )
632
633 // printing Java thread stack trace if it is involved in GC crash
634 if (_verbose && _thread && (_thread->is_Named_thread())) {
635 JavaThread* jt = ((NamedThread *)_thread)->processed_thread();
636 if (jt != NULL) {
637 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id());
638 print_stack_trace(st, jt, buf, sizeof(buf), true);
639 }
640 }
641
642 STEP(140, "(printing VM operation)" )
643
644 if (_verbose && _thread && _thread->is_VM_thread()) {
645 VMThread* t = (VMThread*)_thread;
646 VM_Operation* op = t->vm_operation();
647 if (op) {
648 op->print_on_error(st);
649 st->cr();
650 st->cr();
651 }
652 }
653
654 STEP(150, "(printing current compile task)" )
655
656 if (_verbose && _thread && _thread->is_Compiler_thread()) {
657 CompilerThread* t = (CompilerThread*)_thread;
658 if (t->task()) {
659 st->cr();
660 st->print_cr("Current CompileTask:");
661 t->task()->print_line_on_error(st, buf, sizeof(buf));
662 st->cr();
663 }
664 }
665
666 STEP(160, "(printing process)" )
667
668 if (_verbose) {
669 st->cr();
670 st->print_cr("--------------- P R O C E S S ---------------");
671 st->cr();
672 }
673
674 STEP(170, "(printing all threads)" )
675
676 // all threads
677 if (_verbose && _thread) {
678 Threads::print_on_error(st, _thread, buf, sizeof(buf));
679 st->cr();
680 }
681
682 STEP(175, "(printing VM state)" )
683
684 if (_verbose) {
685 // Safepoint state
686 st->print("VM state:");
687
688 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
689 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
690 else st->print("not at safepoint");
691
692 // Also see if error occurred during initialization or shutdown
693 if (!Universe::is_fully_initialized()) {
694 st->print(" (not fully initialized)");
695 } else if (VM_Exit::vm_exited()) {
696 st->print(" (shutting down)");
697 } else {
698 st->print(" (normal execution)");
699 }
700 st->cr();
701 st->cr();
702 }
703
704 STEP(180, "(printing owned locks on error)" )
705
706 // mutexes/monitors that currently have an owner
707 if (_verbose) {
708 print_owned_locks_on_error(st);
709 st->cr();
710 }
711
712 STEP(182, "(printing number of OutOfMemoryError and StackOverflow exceptions)")
713
714 if (_verbose && Exceptions::has_exception_counts()) {
715 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
716 Exceptions::print_exception_counts_on_error(st);
717 st->cr();
718 }
719
720 STEP(185, "(printing compressed oops mode")
721
722 if (_verbose && UseCompressedOops) {
723 Universe::print_compressed_oops_mode(st);
724 if (UseCompressedClassPointers) {
725 Metaspace::print_compressed_class_space(st);
726 }
727 st->cr();
728 }
729
730 STEP(190, "(printing heap information)" )
731
732 if (_verbose && Universe::is_fully_initialized()) {
733 Universe::heap()->print_on_error(st);
734 st->cr();
735
736 st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page());
737 st->cr();
738 }
739
740 STEP(195, "(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(200, "(printing ring buffers)" )
749
750 if (_verbose) {
751 Events::print_all(st);
752 st->cr();
753 }
754
755 STEP(205, "(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(210, "(printing VM options)" )
764
765 if (_verbose) {
766 // VM options
767 Arguments::print_on(st);
768 st->cr();
769 }
770
771 STEP(215, "(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(220, "(printing environment variables)" )
779
780 if (_verbose) {
781 os::print_environment_variables(st, env_list, buf, sizeof(buf));
782 st->cr();
783 }
784
785 STEP(225, "(printing signal handlers)" )
786
787 if (_verbose) {
788 os::print_signal_handlers(st, buf, sizeof(buf));
789 st->cr();
790 }
791
792 STEP(228, "(Native Memory Tracking)" )
793 if (_verbose) {
794 MemTracker::error_report(st);
795 }
796
797 STEP(230, "" )
798
799 if (_verbose) {
800 st->cr();
801 st->print_cr("--------------- S Y S T E M ---------------");
802 st->cr();
803 }
804
805 STEP(240, "(printing OS information)" )
806
807 if (_verbose) {
808 os::print_os_info(st);
809 st->cr();
810 }
811
812 STEP(250, "(printing CPU info)" )
813 if (_verbose) {
814 os::print_cpu_info(st);
815 st->cr();
816 }
817
818 STEP(260, "(printing memory info)" )
819
820 if (_verbose) {
821 os::print_memory_info(st);
822 st->cr();
823 }
824
825 STEP(270, "(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 STEP(280, "(printing date and time)" )
833
834 if (_verbose) {
835 os::print_date_and_time(st, buf, sizeof(buf));
836 st->cr();
837 }
838
839 END
840
841 # undef BEGIN
842 # undef STEP
843 # undef END
844 }
845
846 VMError* volatile VMError::first_error = NULL;
847 volatile jlong VMError::first_error_tid = -1;
848
849 // An error could happen before tty is initialized or after it has been
850 // destroyed. Here we use a very simple unbuffered fdStream for printing.
851 // Only out.print_raw() and out.print_raw_cr() should be used, as other
852 // printing methods need to allocate large buffer on stack. To format a
853 // string, use jio_snprintf() with a static buffer or use staticBufferStream.
854 fdStream VMError::out(defaultStream::output_fd());
855 fdStream VMError::log; // error log used by VMError::report_and_die()
856
857 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
858 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
859 int fd = -1;
860 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
861 // the O_EXCL flag will cause the open to fail if the file exists
862 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666);
863 }
864 return fd;
865 }
866
867 /**
868 * Construct file name for a log file and return it's file descriptor.
869 * Name and location depends on pattern, default_pattern params and access
870 * permissions.
871 */
872 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) {
873 int fd = -1;
874
875 // If possible, use specified pattern to construct log file name
876 if (pattern != NULL) {
877 fd = expand_and_open(pattern, buf, buflen, 0);
878 }
879
880 // Either user didn't specify, or the user's location failed,
881 // so use the default name in the current directory
882 if (fd == -1) {
883 const char* cwd = os::get_current_directory(buf, buflen);
884 if (cwd != NULL) {
885 size_t pos = strlen(cwd);
886 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
887 pos += fsep_len;
888 if (fsep_len > 0) {
889 fd = expand_and_open(default_pattern, buf, buflen, pos);
890 }
891 }
892 }
893
894 // try temp directory if it exists.
895 if (fd == -1) {
896 const char* tmpdir = os::get_temp_directory();
897 if (tmpdir != NULL && strlen(tmpdir) > 0) {
898 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
899 if (pos > 0) {
900 fd = expand_and_open(default_pattern, buf, buflen, pos);
901 }
902 }
903 }
904
905 return fd;
906 }
907
908 void VMError::report_and_die() {
909 // Don't allocate large buffer on stack
910 static char buffer[O_BUFLEN];
911
912 // How many errors occurred in error handler when reporting first_error.
913 static int recursive_error_count;
914
915 // We will first print a brief message to standard out (verbose = false),
916 // then save detailed information in log file (verbose = true).
917 static bool out_done = false; // done printing to standard out
918 static bool log_done = false; // done saving error log
919 static bool transmit_report_done = false; // done error reporting
920
921 if (SuppressFatalErrorMessage) {
922 os::abort();
923 }
924 jlong mytid = os::current_thread_id();
925 if (first_error == NULL &&
926 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) {
927
928 // first time
929 first_error_tid = mytid;
930 set_error_reported();
931
932 if (ShowMessageBoxOnError || PauseAtExit) {
933 show_message_box(buffer, sizeof(buffer));
934
935 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
936 // WatcherThread can kill JVM if the error handler hangs.
937 ShowMessageBoxOnError = false;
938 }
939
940 // Write a minidump on Windows, check core dump limits on Linux/Solaris
941 os::check_or_create_dump(_siginfo, _context, buffer, sizeof(buffer));
942
943 // reset signal handlers or exception filter; make sure recursive crashes
944 // are handled properly.
945 reset_signal_handlers();
946
947 EventShutdown e;
948 if (e.should_commit()) {
949 e.set_reason("VM Error");
950 e.commit();
951 }
952
953 JFR_ONLY(Jfr::on_vm_shutdown(true);)
954 } else {
955 // If UseOsErrorReporting we call this for each level of the call stack
956 // while searching for the exception handler. Only the first level needs
957 // to be reported.
958 if (UseOSErrorReporting && log_done) return;
959
960 // This is not the first error, see if it happened in a different thread
961 // or in the same thread during error reporting.
962 if (first_error_tid != mytid) {
963 char msgbuf[64];
964 jio_snprintf(msgbuf, sizeof(msgbuf),
965 "[thread " INT64_FORMAT " also had an error]",
966 mytid);
967 out.print_raw_cr(msgbuf);
968
969 // error reporting is not MT-safe, block current thread
970 os::infinite_sleep();
971
972 } else {
973 if (recursive_error_count++ > 30) {
974 out.print_raw_cr("[Too many errors, abort]");
975 os::die();
976 }
977
978 jio_snprintf(buffer, sizeof(buffer),
979 "[error occurred during error reporting %s, id 0x%x]",
980 first_error ? first_error->_current_step_info : "",
981 _id);
982 if (log.is_open()) {
983 log.cr();
984 log.print_raw_cr(buffer);
985 log.cr();
986 } else {
987 out.cr();
988 out.print_raw_cr(buffer);
989 out.cr();
990 }
991 }
992 }
993
994 // print to screen
995 if (!out_done) {
996 first_error->_verbose = false;
997
998 staticBufferStream sbs(buffer, sizeof(buffer), &out);
999 first_error->report(&sbs);
1000
1001 out_done = true;
1002
1003 first_error->_current_step = 0; // reset current_step
1004 first_error->_current_step_info = ""; // reset current_step string
1005 }
1006
1007 // print to error log file
1008 if (!log_done) {
1009 first_error->_verbose = true;
1010
1011 // see if log file is already open
1012 if (!log.is_open()) {
1013 // open log file
1014 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer));
1015 if (fd != -1) {
1016 out.print_raw("# An error report file with more information is saved as:\n# ");
1017 out.print_raw_cr(buffer);
1018
1019 log.set_fd(fd);
1020 } else {
1021 out.print_raw_cr("# Can not save log file, dump to screen..");
1022 log.set_fd(defaultStream::output_fd());
1023 /* Error reporting currently needs dumpfile.
1024 * Maybe implement direct streaming in the future.*/
1025 transmit_report_done = true;
1026 }
1027 }
1028
1029 staticBufferStream sbs(buffer, O_BUFLEN, &log);
1030 first_error->report(&sbs);
1031 first_error->_current_step = 0; // reset current_step
1032 first_error->_current_step_info = ""; // reset current_step string
1033
1034 // Run error reporting to determine whether or not to report the crash.
1035 if (!transmit_report_done && should_report_bug(first_error->_id)) {
1036 transmit_report_done = true;
1037 FILE* hs_err = os::open(log.fd(), "r");
1038 if (NULL != hs_err) {
1039 ErrorReporter er;
1040 er.call(hs_err, buffer, O_BUFLEN);
1041 }
1042 }
1043
1044 if (log.fd() != defaultStream::output_fd()) {
1045 close(log.fd());
1046 }
1047
1048 log.set_fd(-1);
1049 log_done = true;
1050 }
1051
1052
1053 static bool skip_OnError = false;
1054 if (!skip_OnError && OnError && OnError[0]) {
1055 skip_OnError = true;
1056
1057 out.print_raw_cr("#");
1058 out.print_raw ("# -XX:OnError=\"");
1059 out.print_raw (OnError);
1060 out.print_raw_cr("\"");
1061
1062 char* cmd;
1063 const char* ptr = OnError;
1064 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1065 out.print_raw ("# Executing ");
1066 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1067 out.print_raw ("/bin/sh -c ");
1068 #elif defined(SOLARIS)
1069 out.print_raw ("/usr/bin/sh -c ");
1070 #endif
1071 out.print_raw ("\"");
1072 out.print_raw (cmd);
1073 out.print_raw_cr("\" ...");
1074
1075 if (os::fork_and_exec(cmd, true) < 0) {
1076 out.print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno);
1077 }
1078 }
1079
1080 // done with OnError
1081 OnError = NULL;
1082 }
1083
1084 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay
1085 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1086 skip_replay = true;
1087 ciEnv* env = ciEnv::current();
1088 if (env != NULL) {
1089 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer));
1090 if (fd != -1) {
1091 FILE* replay_data_file = os::open(fd, "w");
1092 if (replay_data_file != NULL) {
1093 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1094 env->dump_replay_data_unsafe(&replay_data_stream);
1095 out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1096 out.print_raw_cr(buffer);
1097 } else {
1098 out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1099 out.print_raw_cr(strerror(os::get_last_error()));
1100 }
1101 }
1102 }
1103 }
1104
1105 static bool skip_bug_url = !should_report_bug(first_error->_id);
1106 if (!skip_bug_url) {
1107 skip_bug_url = true;
1108
1109 out.print_raw_cr("#");
1110 print_bug_submit_message(&out, _thread);
1111 }
1112
1113 if (!UseOSErrorReporting) {
1114 // os::abort() will call abort hooks, try it first.
1115 static bool skip_os_abort = false;
1116 if (!skip_os_abort) {
1117 skip_os_abort = true;
1118 bool dump_core = should_report_bug(first_error->_id);
1119 os::abort(dump_core);
1120 }
1121
1122 // if os::abort() doesn't abort, try os::die();
1123 os::die();
1124 }
1125 }
1126
1127 /*
1128 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1129 * ensures utilities such as jmap can observe the process is a consistent state.
1130 */
1131 class VM_ReportJavaOutOfMemory : public VM_Operation {
1132 private:
1133 VMError *_err;
1134 public:
1135 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; }
1136 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
1137 void doit();
1138 };
1139
1140 void VM_ReportJavaOutOfMemory::doit() {
1141 // Don't allocate large buffer on stack
1142 static char buffer[O_BUFLEN];
1143
1144 tty->print_cr("#");
1145 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message());
1146 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1147
1148 // make heap parsability
1149 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
1150
1151 char* cmd;
1152 const char* ptr = OnOutOfMemoryError;
1153 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1154 tty->print("# Executing ");
1155 #if defined(LINUX)
1156 tty->print ("/bin/sh -c ");
1157 #elif defined(SOLARIS)
1158 tty->print ("/usr/bin/sh -c ");
1159 #endif
1160 tty->print_cr("\"%s\"...", cmd);
1161
1162 if (os::fork_and_exec(cmd) < 0) {
1163 tty->print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno);
1164 }
1165 }
1166 }
1167
1168 void VMError::report_java_out_of_memory() {
1169 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1170 MutexLocker ml(Heap_lock);
1171 VM_ReportJavaOutOfMemory op(this);
1172 VMThread::execute(&op);
1173 }
1174 }