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 #if INCLUDE_JFR
30 #include "jfr/jfrEvents.hpp"
31 #endif
32 #include "prims/whitebox.hpp"
33 #include "runtime/arguments.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 #include "utilities/macros.hpp"
49 #if INCLUDE_JFR
50 #include "jfr/jfr.hpp"
51 #endif
52
53 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
54
55 // List of environment variables that should be reported in error log file.
56 const char *env_list[] = {
57 // All platforms
58 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
59 "JAVA_COMPILER", "PATH", "USERNAME",
60
61 // Env variables that are defined on Solaris/Linux/BSD
62 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
63 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
64
65 // defined on Linux
66 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
67
68 // defined on Darwin
69 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
70 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
71 "DYLD_INSERT_LIBRARIES",
72
73 // defined on Windows
74 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
75
76 (const char *)0
77 };
78
79 // Fatal error handler for internal errors and crashes.
80 //
81 // The default behavior of fatal error handler is to print a brief message
82 // to standard out (defaultStream::output_fd()), then save detailed information
83 // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple
84 // threads are having troubles at the same time, only one error is reported.
85 // The thread that is reporting error will abort VM when it is done, all other
86 // threads are blocked forever inside report_and_die().
87
88 // Constructor for crashes
89 VMError::VMError(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) {
90 _thread = thread;
91 _id = sig;
92 _pc = pc;
93 _siginfo = siginfo;
94 _context = context;
95
96 _verbose = false;
97 _current_step = 0;
98 _current_step_info = NULL;
99
100 _message = NULL;
101 _detail_msg = NULL;
102 _filename = NULL;
103 _lineno = 0;
104
105 _size = 0;
106 }
107
108 // Constructor for internal errors
109 VMError::VMError(Thread* thread, const char* filename, int lineno,
110 const char* message, const char * detail_msg)
111 {
112 _thread = thread;
113 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal
114 _filename = filename;
115 _lineno = lineno;
116 _message = message;
117 _detail_msg = detail_msg;
118
119 _verbose = false;
120 _current_step = 0;
121 _current_step_info = NULL;
122
123 _pc = NULL;
124 _siginfo = NULL;
125 _context = NULL;
126
127 _size = 0;
128 }
129
130 // Constructor for OOM errors
131 VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size,
132 VMErrorType vm_err_type, const char* message) {
133 _thread = thread;
134 _id = vm_err_type; // Value that's not an OS exception/signal
135 _filename = filename;
136 _lineno = lineno;
137 _message = message;
138 _detail_msg = NULL;
139
140 _verbose = false;
141 _current_step = 0;
142 _current_step_info = NULL;
143
144 _pc = NULL;
145 _siginfo = NULL;
146 _context = NULL;
147
148 _size = size;
149 }
150
151
152 // Constructor for non-fatal errors
153 VMError::VMError(const char* message) {
154 _thread = NULL;
155 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal
156 _filename = NULL;
157 _lineno = 0;
158 _message = message;
159 _detail_msg = NULL;
160
161 _verbose = false;
162 _current_step = 0;
163 _current_step_info = NULL;
164
165 _pc = NULL;
166 _siginfo = NULL;
167 _context = NULL;
168
169 _size = 0;
170 }
171
172 // -XX:OnError=<string>, where <string> can be a list of commands, separated
173 // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by
174 // a single "%". Some examples:
175 //
176 // -XX:OnError="pmap %p" // show memory map
177 // -XX:OnError="gcore %p; dbx - %p" // dump core and launch debugger
178 // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com"
179 // -XX:OnError="kill -9 %p" // ?#!@#
180
181 // A simple parser for -XX:OnError, usage:
182 // ptr = OnError;
183 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
184 // ... ...
185 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
186 if (ptr == NULL || *ptr == NULL) return NULL;
187
188 const char* cmd = *ptr;
189
190 // skip leading blanks or ';'
191 while (*cmd == ' ' || *cmd == ';') cmd++;
192
193 if (*cmd == '\0') return NULL;
194
195 const char * cmdend = cmd;
196 while (*cmdend != '\0' && *cmdend != ';') cmdend++;
197
198 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
199
200 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
201 return buf;
202 }
203
204
205 static void print_bug_submit_message(outputStream *out, Thread *thread) {
206 if (out == NULL) return;
207 out->print_raw_cr("# If you would like to submit a bug report, please visit:");
208 out->print_raw ("# ");
209 out->print_raw_cr(Arguments::java_vendor_url_bug());
210 // If the crash is in native code, encourage user to submit a bug to the
211 // provider of that code.
212 if (thread && thread->is_Java_thread() &&
213 !thread->is_hidden_from_external_view()) {
214 JavaThread* jt = (JavaThread*)thread;
215 if (jt->thread_state() == _thread_in_native) {
216 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
217 }
218 }
219 out->print_raw_cr("#");
220 }
221
222 bool VMError::coredump_status;
223 char VMError::coredump_message[O_BUFLEN];
224
225 void VMError::report_coredump_status(const char* message, bool status) {
226 coredump_status = status;
227 strncpy(coredump_message, message, sizeof(coredump_message));
228 coredump_message[sizeof(coredump_message)-1] = 0;
229 }
230
231
232 // Return a string to describe the error
233 char* VMError::error_string(char* buf, int buflen) {
234 char signame_buf[64];
235 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
236
237 if (signame) {
238 jio_snprintf(buf, buflen,
239 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" INTPTR_FORMAT,
240 signame, _id, _pc,
241 os::current_process_id(), os::current_thread_id());
242 } else if (_filename != NULL && _lineno > 0) {
243 // skip directory names
244 char separator = os::file_separator()[0];
245 const char *p = strrchr(_filename, separator);
246 int n = jio_snprintf(buf, buflen,
247 "Internal Error at %s:%d, pid=%d, tid=" INTPTR_FORMAT,
248 p ? p + 1 : _filename, _lineno,
249 os::current_process_id(), os::current_thread_id());
250 if (n >= 0 && n < buflen && _message) {
251 if (_detail_msg) {
252 jio_snprintf(buf + n, buflen - n, "%s%s: %s",
253 os::line_separator(), _message, _detail_msg);
254 } else {
255 jio_snprintf(buf + n, buflen - n, "%sError: %s",
256 os::line_separator(), _message);
257 }
258 }
259 } else {
260 jio_snprintf(buf, buflen,
261 "Internal Error (0x%x), pid=%d, tid=" INTPTR_FORMAT,
262 _id, os::current_process_id(), os::current_thread_id());
263 }
264
265 return buf;
266 }
267
268 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
269 char* buf, int buflen, bool verbose) {
270 #ifdef ZERO
271 if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
272 // StackFrameStream uses the frame anchor, which may not have
273 // been set up. This can be done at any time in Zero, however,
274 // so if it hasn't been set up then we just set it up now and
275 // clear it again when we're done.
276 bool has_last_Java_frame = jt->has_last_Java_frame();
277 if (!has_last_Java_frame)
278 jt->set_last_Java_frame();
279 st->print("Java frames:");
280
281 // If the top frame is a Shark frame and the frame anchor isn't
282 // set up then it's possible that the information in the frame
283 // is garbage: it could be from a previous decache, or it could
284 // simply have never been written. So we print a warning...
285 StackFrameStream sfs(jt);
286 if (!has_last_Java_frame && !sfs.is_done()) {
287 if (sfs.current()->zeroframe()->is_shark_frame()) {
288 st->print(" (TOP FRAME MAY BE JUNK)");
289 }
290 }
291 st->cr();
292
293 // Print the frames
294 for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
295 sfs.current()->zero_print_on_error(i, st, buf, buflen);
296 st->cr();
297 }
298
299 // Reset the frame anchor if necessary
300 if (!has_last_Java_frame)
301 jt->reset_last_Java_frame();
302 }
303 #else
304 if (jt->has_last_Java_frame()) {
305 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
306 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
307 sfs.current()->print_on_error(st, buf, buflen, verbose);
308 st->cr();
309 }
310 }
311 #endif // ZERO
312 }
313
314 static void print_oom_reasons(outputStream* st) {
315 st->print_cr("# Possible reasons:");
316 st->print_cr("# The system is out of physical RAM or swap space");
317 if (UseCompressedOops) {
318 st->print_cr("# The process is running with CompressedOops enabled, and the Java Heap may be blocking the growth of the native heap");
319 }
320 if (LogBytesPerWord == 2) {
321 st->print_cr("# In 32 bit mode, the process size limit was hit");
322 }
323 st->print_cr("# Possible solutions:");
324 st->print_cr("# Reduce memory load on the system");
325 st->print_cr("# Increase physical memory or swap space");
326 st->print_cr("# Check if swap backing store is full");
327 if (LogBytesPerWord == 2) {
328 st->print_cr("# Use 64 bit Java on a 64 bit OS");
329 }
330 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)");
331 st->print_cr("# Decrease number of Java threads");
332 st->print_cr("# Decrease Java thread stack sizes (-Xss)");
333 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize=");
334 if (UseCompressedOops) {
335 switch (Universe::narrow_oop_mode()) {
336 case Universe::UnscaledNarrowOop:
337 st->print_cr("# JVM is running with Unscaled Compressed Oops mode in which the Java heap is");
338 st->print_cr("# placed in the first 4GB address space. The Java Heap base address is the");
339 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
340 st->print_cr("# to set the Java Heap base and to place the Java Heap above 4GB virtual address.");
341 break;
342 case Universe::ZeroBasedNarrowOop:
343 st->print_cr("# JVM is running with Zero Based Compressed Oops mode in which the Java heap is");
344 st->print_cr("# placed in the first 32GB address space. The Java Heap base address is the");
345 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
346 st->print_cr("# to set the Java Heap base and to place the Java Heap above 32GB virtual address.");
347 break;
348 default:
349 break;
350 }
351 }
352 st->print_cr("# This output file may be truncated or incomplete.");
353 }
354
355 // This is the main function to report a fatal error. Only one thread can
356 // call this function, so we don't need to worry about MT-safety. But it's
357 // possible that the error handler itself may crash or die on an internal
358 // error, for example, when the stack/heap is badly damaged. We must be
359 // able to handle recursive errors that happen inside error handler.
360 //
361 // Error reporting is done in several steps. If a crash or internal error
362 // occurred when reporting an error, the nested signal/exception handler
363 // can skip steps that are already (or partially) done. Error reporting will
364 // continue from the next step. This allows us to retrieve and print
365 // information that may be unsafe to get after a fatal error. If it happens,
366 // you may find nested report_and_die() frames when you look at the stack
367 // in a debugger.
368 //
369 // In general, a hang in error handler is much worse than a crash or internal
370 // error, as it's harder to recover from a hang. Deadlock can happen if we
371 // try to grab a lock that is already owned by current thread, or if the
372 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
373 // error handler and all the functions it called should avoid grabbing any
374 // lock. An important thing to notice is that memory allocation needs a lock.
375 //
376 // We should avoid using large stack allocated buffers. Many errors happen
377 // when stack space is already low. Making things even worse is that there
378 // could be nested report_and_die() calls on stack (see above). Only one
379 // thread can report error, so large buffers are statically allocated in data
380 // segment.
381
382 void VMError::report(outputStream* st) {
383 # define BEGIN if (_current_step == 0) { _current_step = 1;
384 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s;
385 # define END }
386
387 // don't allocate large buffer on stack
388 static char buf[O_BUFLEN];
389
390 BEGIN
391
392 STEP(10, "(printing fatal error message)")
393
394 st->print_cr("#");
395 if (should_report_bug(_id)) {
396 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
397 } else {
398 st->print_cr("# There is insufficient memory for the Java "
399 "Runtime Environment to continue.");
400 }
401
402 STEP(15, "(printing type of error)")
403
404 switch(_id) {
405 case OOM_MALLOC_ERROR:
406 case OOM_MMAP_ERROR:
407 if (_size) {
408 st->print("# Native memory allocation ");
409 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
410 "(mmap) failed to map ");
411 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
412 st->print("%s", buf);
413 st->print(" bytes");
414 if (_message != NULL) {
415 st->print(" for ");
416 st->print("%s", _message);
417 }
418 st->cr();
419 } else {
420 if (_message != NULL)
421 st->print("# ");
422 st->print_cr("%s", _message);
423 }
424 // In error file give some solutions
425 if (_verbose) {
426 print_oom_reasons(st);
427 } else {
428 return; // that's enough for the screen
429 }
430 break;
431 case INTERNAL_ERROR:
432 default:
433 break;
434 }
435
436 STEP(20, "(printing exception/signal name)")
437
438 st->print_cr("#");
439 st->print("# ");
440 // Is it an OS exception/signal?
441 if (os::exception_name(_id, buf, sizeof(buf))) {
442 st->print("%s", buf);
443 st->print(" (0x%x)", _id); // signal number
444 st->print(" at pc=" PTR_FORMAT, _pc);
445 } else {
446 if (should_report_bug(_id)) {
447 st->print("Internal Error");
448 } else {
449 st->print("Out of Memory Error");
450 }
451 if (_filename != NULL && _lineno > 0) {
452 #ifdef PRODUCT
453 // In product mode chop off pathname?
454 char separator = os::file_separator()[0];
455 const char *p = strrchr(_filename, separator);
456 const char *file = p ? p+1 : _filename;
457 #else
458 const char *file = _filename;
459 #endif
460 size_t len = strlen(file);
461 size_t buflen = sizeof(buf);
462
463 strncpy(buf, file, buflen);
464 if (len + 10 < buflen) {
465 sprintf(buf + len, ":%d", _lineno);
466 }
467 st->print(" (%s)", buf);
468 } else {
469 st->print(" (0x%x)", _id);
470 }
471 }
472
473 STEP(30, "(printing current thread and pid)")
474
475 // process id, thread id
476 st->print(", pid=%d", os::current_process_id());
477 st->print(", tid=" INTPTR_FORMAT, os::current_thread_id());
478 st->cr();
479
480 STEP(40, "(printing error message)")
481
482 if (should_report_bug(_id)) { // already printed the message.
483 // error message
484 if (_detail_msg) {
485 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg);
486 } else if (_message) {
487 st->print_cr("# Error: %s", _message);
488 }
489 }
490
491 STEP(50, "(printing Java version string)")
492
493 // VM version
494 st->print_cr("#");
495 JDK_Version::current().to_string(buf, sizeof(buf));
496 const char* runtime_name = JDK_Version::runtime_name() != NULL ?
497 JDK_Version::runtime_name() : "";
498 const char* runtime_version = JDK_Version::runtime_version() != NULL ?
499 JDK_Version::runtime_version() : "";
500 st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version);
501 st->print_cr("# Java VM: %s (%s %s %s %s)",
502 Abstract_VM_Version::vm_name(),
503 Abstract_VM_Version::vm_release(),
504 Abstract_VM_Version::vm_info_string(),
505 Abstract_VM_Version::vm_platform_string(),
506 UseCompressedOops ? "compressed oops" : ""
507 );
508
509 STEP(60, "(printing problematic frame)")
510
511 // Print current frame if we have a context (i.e. it's a crash)
512 if (_context) {
513 st->print_cr("# Problematic frame:");
514 st->print("# ");
515 frame fr = os::fetch_frame_from_context(_context);
516 fr.print_on_error(st, buf, sizeof(buf));
517 st->cr();
518 st->print_cr("#");
519 }
520 STEP(63, "(printing core file information)")
521 st->print("# ");
522 if (coredump_status) {
523 st->print("Core dump written. Default location: %s", coredump_message);
524 } else {
525 st->print("Failed to write core dump. %s", coredump_message);
526 }
527 st->cr();
528 st->print_cr("#");
529
530 STEP(65, "(printing bug submit message)")
531
532 if (should_report_bug(_id) && _verbose) {
533 print_bug_submit_message(st, _thread);
534 }
535
536 STEP(70, "(printing thread)" )
537
538 if (_verbose) {
539 st->cr();
540 st->print_cr("--------------- T H R E A D ---------------");
541 st->cr();
542 }
543
544 STEP(80, "(printing current thread)" )
545
546 // current thread
547 if (_verbose) {
548 if (_thread) {
549 st->print("Current thread (" PTR_FORMAT "): ", _thread);
550 _thread->print_on_error(st, buf, sizeof(buf));
551 st->cr();
552 } else {
553 st->print_cr("Current thread is native thread");
554 }
555 st->cr();
556 }
557
558 STEP(90, "(printing siginfo)" )
559
560 // signal no, signal code, address that caused the fault
561 if (_verbose && _siginfo) {
562 os::print_siginfo(st, _siginfo);
563 st->cr();
564 }
565
566 STEP(100, "(printing registers, top of stack, instructions near pc)")
567
568 // registers, top of stack, instructions near pc
569 if (_verbose && _context) {
570 os::print_context(st, _context);
571 st->cr();
572 }
573
574 STEP(105, "(printing register info)")
575
576 // decode register contents if possible
577 if (_verbose && _context && Universe::is_fully_initialized()) {
578 os::print_register_info(st, _context);
579 st->cr();
580 }
581
582 STEP(110, "(printing stack bounds)" )
583
584 if (_verbose) {
585 st->print("Stack: ");
586
587 address stack_top;
588 size_t stack_size;
589
590 if (_thread) {
591 stack_top = _thread->stack_base();
592 stack_size = _thread->stack_size();
593 } else {
594 stack_top = os::current_stack_base();
595 stack_size = os::current_stack_size();
596 }
597
598 address stack_bottom = stack_top - stack_size;
599 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top);
600
601 frame fr = _context ? os::fetch_frame_from_context(_context)
602 : os::current_frame();
603
604 if (fr.sp()) {
605 st->print(", sp=" PTR_FORMAT, fr.sp());
606 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
607 st->print(", free space=" SIZE_FORMAT "k", free_stack_size);
608 }
609
610 st->cr();
611 }
612
613 STEP(120, "(printing native stack)" )
614
615 if (_verbose) {
616 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
617 // We have printed the native stack in platform-specific code
618 // Windows/x64 needs special handling.
619 } else {
620 frame fr = _context ? os::fetch_frame_from_context(_context)
621 : os::current_frame();
622
623 print_native_stack(st, fr, _thread, buf, sizeof(buf));
624 }
625 }
626
627 STEP(130, "(printing Java stack)" )
628
629 if (_verbose && _thread && _thread->is_Java_thread()) {
630 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
631 }
632
633 STEP(135, "(printing target Java thread stack)" )
634
635 // printing Java thread stack trace if it is involved in GC crash
636 if (_verbose && _thread && (_thread->is_Named_thread())) {
637 JavaThread* jt = ((NamedThread *)_thread)->processed_thread();
638 if (jt != NULL) {
639 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id());
640 print_stack_trace(st, jt, buf, sizeof(buf), true);
641 }
642 }
643
644 STEP(140, "(printing VM operation)" )
645
646 if (_verbose && _thread && _thread->is_VM_thread()) {
647 VMThread* t = (VMThread*)_thread;
648 VM_Operation* op = t->vm_operation();
649 if (op) {
650 op->print_on_error(st);
651 st->cr();
652 st->cr();
653 }
654 }
655
656 STEP(150, "(printing current compile task)" )
657
658 if (_verbose && _thread && _thread->is_Compiler_thread()) {
659 CompilerThread* t = (CompilerThread*)_thread;
660 if (t->task()) {
661 st->cr();
662 st->print_cr("Current CompileTask:");
663 t->task()->print_line_on_error(st, buf, sizeof(buf));
664 st->cr();
665 }
666 }
667
668 STEP(160, "(printing process)" )
669
670 if (_verbose) {
671 st->cr();
672 st->print_cr("--------------- P R O C E S S ---------------");
673 st->cr();
674 }
675
676 STEP(170, "(printing all threads)" )
677
678 // all threads
679 if (_verbose && _thread) {
680 Threads::print_on_error(st, _thread, buf, sizeof(buf));
681 st->cr();
682 }
683
684 STEP(175, "(printing VM state)" )
685
686 if (_verbose) {
687 // Safepoint state
688 st->print("VM state:");
689
690 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
691 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
692 else st->print("not at safepoint");
693
694 // Also see if error occurred during initialization or shutdown
695 if (!Universe::is_fully_initialized()) {
696 st->print(" (not fully initialized)");
697 } else if (VM_Exit::vm_exited()) {
698 st->print(" (shutting down)");
699 } else {
700 st->print(" (normal execution)");
701 }
702 st->cr();
703 st->cr();
704 }
705
706 STEP(180, "(printing owned locks on error)" )
707
708 // mutexes/monitors that currently have an owner
709 if (_verbose) {
710 print_owned_locks_on_error(st);
711 st->cr();
712 }
713
714 STEP(182, "(printing number of OutOfMemoryError and StackOverflow exceptions)")
715
716 if (_verbose && Exceptions::has_exception_counts()) {
717 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
718 Exceptions::print_exception_counts_on_error(st);
719 st->cr();
720 }
721
722 STEP(185, "(printing compressed oops mode")
723
724 if (_verbose && UseCompressedOops) {
725 Universe::print_compressed_oops_mode(st);
726 if (UseCompressedClassPointers) {
727 Metaspace::print_compressed_class_space(st);
728 }
729 st->cr();
730 }
731
732 STEP(190, "(printing heap information)" )
733
734 if (_verbose && Universe::is_fully_initialized()) {
735 Universe::heap()->print_on_error(st);
736 st->cr();
737
738 st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page());
739 st->cr();
740 }
741
742 STEP(195, "(printing code cache information)" )
743
744 if (_verbose && Universe::is_fully_initialized()) {
745 // print code cache information before vm abort
746 CodeCache::print_summary(st);
747 st->cr();
748 }
749
750 STEP(200, "(printing ring buffers)" )
751
752 if (_verbose) {
753 Events::print_all(st);
754 st->cr();
755 }
756
757 STEP(205, "(printing dynamic libraries)" )
758
759 if (_verbose) {
760 // dynamic libraries, or memory map
761 os::print_dll_info(st);
762 st->cr();
763 }
764
765 STEP(210, "(printing VM options)" )
766
767 if (_verbose) {
768 // VM options
769 Arguments::print_on(st);
770 st->cr();
771 }
772
773 STEP(215, "(printing warning if internal testing API used)" )
774
775 if (WhiteBox::used()) {
776 st->print_cr("Unsupported internal testing APIs have been used.");
777 st->cr();
778 }
779
780 STEP(220, "(printing environment variables)" )
781
782 if (_verbose) {
783 os::print_environment_variables(st, env_list, buf, sizeof(buf));
784 st->cr();
785 }
786
787 STEP(225, "(printing signal handlers)" )
788
789 if (_verbose) {
790 os::print_signal_handlers(st, buf, sizeof(buf));
791 st->cr();
792 }
793
794 STEP(228, "(Native Memory Tracking)" )
795 if (_verbose) {
796 MemTracker::error_report(st);
797 }
798
799 STEP(230, "" )
800
801 if (_verbose) {
802 st->cr();
803 st->print_cr("--------------- S Y S T E M ---------------");
804 st->cr();
805 }
806
807 STEP(240, "(printing OS information)" )
808
809 if (_verbose) {
810 os::print_os_info(st);
811 st->cr();
812 }
813
814 STEP(250, "(printing CPU info)" )
815 if (_verbose) {
816 os::print_cpu_info(st);
817 st->cr();
818 }
819
820 STEP(260, "(printing memory info)" )
821
822 if (_verbose) {
823 os::print_memory_info(st);
824 st->cr();
825 }
826
827 STEP(270, "(printing internal vm info)" )
828
829 if (_verbose) {
830 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
831 st->cr();
832 }
833
834 STEP(280, "(printing date and time)" )
835
836 if (_verbose) {
837 os::print_date_and_time(st, buf, sizeof(buf));
838 st->cr();
839 }
840
841 END
842
843 # undef BEGIN
844 # undef STEP
845 # undef END
846 }
847
848 VMError* volatile VMError::first_error = NULL;
849 volatile jlong VMError::first_error_tid = -1;
850
851 // An error could happen before tty is initialized or after it has been
852 // destroyed. Here we use a very simple unbuffered fdStream for printing.
853 // Only out.print_raw() and out.print_raw_cr() should be used, as other
854 // printing methods need to allocate large buffer on stack. To format a
855 // string, use jio_snprintf() with a static buffer or use staticBufferStream.
856 fdStream VMError::out(defaultStream::output_fd());
857 fdStream VMError::log; // error log used by VMError::report_and_die()
858
859 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
860 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
861 int fd = -1;
862 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
863 // the O_EXCL flag will cause the open to fail if the file exists
864 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666);
865 }
866 return fd;
867 }
868
869 /**
870 * Construct file name for a log file and return it's file descriptor.
871 * Name and location depends on pattern, default_pattern params and access
872 * permissions.
873 */
874 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) {
875 int fd = -1;
876
877 // If possible, use specified pattern to construct log file name
878 if (pattern != NULL) {
879 fd = expand_and_open(pattern, buf, buflen, 0);
880 }
881
882 // Either user didn't specify, or the user's location failed,
883 // so use the default name in the current directory
884 if (fd == -1) {
885 const char* cwd = os::get_current_directory(buf, buflen);
886 if (cwd != NULL) {
887 size_t pos = strlen(cwd);
888 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
889 pos += fsep_len;
890 if (fsep_len > 0) {
891 fd = expand_and_open(default_pattern, buf, buflen, pos);
892 }
893 }
894 }
895
896 // try temp directory if it exists.
897 if (fd == -1) {
898 const char* tmpdir = os::get_temp_directory();
899 if (tmpdir != NULL && strlen(tmpdir) > 0) {
900 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
901 if (pos > 0) {
902 fd = expand_and_open(default_pattern, buf, buflen, pos);
903 }
904 }
905 }
906
907 return fd;
908 }
909
910 void VMError::report_and_die() {
911 // Don't allocate large buffer on stack
912 static char buffer[O_BUFLEN];
913
914 // How many errors occurred in error handler when reporting first_error.
915 static int recursive_error_count;
916
917 // We will first print a brief message to standard out (verbose = false),
918 // then save detailed information in log file (verbose = true).
919 static bool out_done = false; // done printing to standard out
920 static bool log_done = false; // done saving error log
921 static bool transmit_report_done = false; // done error reporting
922
923 if (SuppressFatalErrorMessage) {
924 os::abort();
925 }
926 jlong mytid = os::current_thread_id();
927 if (first_error == NULL &&
928 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) {
929
930 // first time
931 first_error_tid = mytid;
932 set_error_reported();
933
934 if (ShowMessageBoxOnError || PauseAtExit) {
935 show_message_box(buffer, sizeof(buffer));
936
937 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
938 // WatcherThread can kill JVM if the error handler hangs.
939 ShowMessageBoxOnError = false;
940 }
941
942 // Write a minidump on Windows, check core dump limits on Linux/Solaris
943 os::check_or_create_dump(_siginfo, _context, buffer, sizeof(buffer));
944
945 // reset signal handlers or exception filter; make sure recursive crashes
946 // are handled properly.
947 reset_signal_handlers();
948
949 #if INCLUDE_JFR
950 EventShutdown e;
951 if (e.should_commit()) {
952 e.set_reason("VM Error");
953 e.commit();
954 }
955 #endif
956 JFR_ONLY(Jfr::on_vm_shutdown(true);)
957 } else {
958 // If UseOsErrorReporting we call this for each level of the call stack
959 // while searching for the exception handler. Only the first level needs
960 // to be reported.
961 if (UseOSErrorReporting && log_done) return;
962
963 // This is not the first error, see if it happened in a different thread
964 // or in the same thread during error reporting.
965 if (first_error_tid != mytid) {
966 char msgbuf[64];
967 jio_snprintf(msgbuf, sizeof(msgbuf),
968 "[thread " INT64_FORMAT " also had an error]",
969 mytid);
970 out.print_raw_cr(msgbuf);
971
972 // error reporting is not MT-safe, block current thread
973 os::infinite_sleep();
974
975 } else {
976 if (recursive_error_count++ > 30) {
977 out.print_raw_cr("[Too many errors, abort]");
978 os::die();
979 }
980
981 jio_snprintf(buffer, sizeof(buffer),
982 "[error occurred during error reporting %s, id 0x%x]",
983 first_error ? first_error->_current_step_info : "",
984 _id);
985 if (log.is_open()) {
986 log.cr();
987 log.print_raw_cr(buffer);
988 log.cr();
989 } else {
990 out.cr();
991 out.print_raw_cr(buffer);
992 out.cr();
993 }
994 }
995 }
996
997 // print to screen
998 if (!out_done) {
999 first_error->_verbose = false;
1000
1001 staticBufferStream sbs(buffer, sizeof(buffer), &out);
1002 first_error->report(&sbs);
1003
1004 out_done = true;
1005
1006 first_error->_current_step = 0; // reset current_step
1007 first_error->_current_step_info = ""; // reset current_step string
1008 }
1009
1010 // print to error log file
1011 if (!log_done) {
1012 first_error->_verbose = true;
1013
1014 // see if log file is already open
1015 if (!log.is_open()) {
1016 // open log file
1017 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer));
1018 if (fd != -1) {
1019 out.print_raw("# An error report file with more information is saved as:\n# ");
1020 out.print_raw_cr(buffer);
1021
1022 log.set_fd(fd);
1023 } else {
1024 out.print_raw_cr("# Can not save log file, dump to screen..");
1025 log.set_fd(defaultStream::output_fd());
1026 /* Error reporting currently needs dumpfile.
1027 * Maybe implement direct streaming in the future.*/
1028 transmit_report_done = true;
1029 }
1030 }
1031
1032 staticBufferStream sbs(buffer, O_BUFLEN, &log);
1033 first_error->report(&sbs);
1034 first_error->_current_step = 0; // reset current_step
1035 first_error->_current_step_info = ""; // reset current_step string
1036
1037 // Run error reporting to determine whether or not to report the crash.
1038 if (!transmit_report_done && should_report_bug(first_error->_id)) {
1039 transmit_report_done = true;
1040 FILE* hs_err = os::open(log.fd(), "r");
1041 if (NULL != hs_err) {
1042 ErrorReporter er;
1043 er.call(hs_err, buffer, O_BUFLEN);
1044 }
1045 }
1046
1047 if (log.fd() != defaultStream::output_fd()) {
1048 close(log.fd());
1049 }
1050
1051 log.set_fd(-1);
1052 log_done = true;
1053 }
1054
1055
1056 static bool skip_OnError = false;
1057 if (!skip_OnError && OnError && OnError[0]) {
1058 skip_OnError = true;
1059
1060 out.print_raw_cr("#");
1061 out.print_raw ("# -XX:OnError=\"");
1062 out.print_raw (OnError);
1063 out.print_raw_cr("\"");
1064
1065 char* cmd;
1066 const char* ptr = OnError;
1067 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1068 out.print_raw ("# Executing ");
1069 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1070 out.print_raw ("/bin/sh -c ");
1071 #elif defined(SOLARIS)
1072 out.print_raw ("/usr/bin/sh -c ");
1073 #endif
1074 out.print_raw ("\"");
1075 out.print_raw (cmd);
1076 out.print_raw_cr("\" ...");
1077
1078 if (os::fork_and_exec(cmd, true) < 0) {
1079 out.print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno);
1080 }
1081 }
1082
1083 // done with OnError
1084 OnError = NULL;
1085 }
1086
1087 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay
1088 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1089 skip_replay = true;
1090 ciEnv* env = ciEnv::current();
1091 if (env != NULL) {
1092 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer));
1093 if (fd != -1) {
1094 FILE* replay_data_file = os::open(fd, "w");
1095 if (replay_data_file != NULL) {
1096 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1097 env->dump_replay_data_unsafe(&replay_data_stream);
1098 out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1099 out.print_raw_cr(buffer);
1100 } else {
1101 out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1102 out.print_raw_cr(strerror(os::get_last_error()));
1103 }
1104 }
1105 }
1106 }
1107
1108 static bool skip_bug_url = !should_report_bug(first_error->_id);
1109 if (!skip_bug_url) {
1110 skip_bug_url = true;
1111
1112 out.print_raw_cr("#");
1113 print_bug_submit_message(&out, _thread);
1114 }
1115
1116 if (!UseOSErrorReporting) {
1117 // os::abort() will call abort hooks, try it first.
1118 static bool skip_os_abort = false;
1119 if (!skip_os_abort) {
1120 skip_os_abort = true;
1121 bool dump_core = should_report_bug(first_error->_id);
1122 os::abort(dump_core);
1123 }
1124
1125 // if os::abort() doesn't abort, try os::die();
1126 os::die();
1127 }
1128 }
1129
1130 /*
1131 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1132 * ensures utilities such as jmap can observe the process is a consistent state.
1133 */
1134 class VM_ReportJavaOutOfMemory : public VM_Operation {
1135 private:
1136 VMError *_err;
1137 public:
1138 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; }
1139 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
1140 void doit();
1141 };
1142
1143 void VM_ReportJavaOutOfMemory::doit() {
1144 // Don't allocate large buffer on stack
1145 static char buffer[O_BUFLEN];
1146
1147 tty->print_cr("#");
1148 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message());
1149 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1150
1151 // make heap parsability
1152 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
1153
1154 char* cmd;
1155 const char* ptr = OnOutOfMemoryError;
1156 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1157 tty->print("# Executing ");
1158 #if defined(LINUX)
1159 tty->print ("/bin/sh -c ");
1160 #elif defined(SOLARIS)
1161 tty->print ("/usr/bin/sh -c ");
1162 #endif
1163 tty->print_cr("\"%s\"...", cmd);
1164
1165 if (os::fork_and_exec(cmd) < 0) {
1166 tty->print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno);
1167 }
1168 }
1169 }
1170
1171 void VMError::report_java_out_of_memory() {
1172 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1173 MutexLocker ml(Heap_lock);
1174 VM_ReportJavaOutOfMemory op(this);
1175 VMThread::execute(&op);
1176 }
1177 }