1 /*
2 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include <fcntl.h>
26 #include "precompiled.hpp"
27 #include "code/codeCache.hpp"
28 #include "compiler/compileBroker.hpp"
29 #include "compiler/disassembler.hpp"
30 #include "gc/shared/collectedHeap.hpp"
31 #include "prims/whitebox.hpp"
32 #include "runtime/arguments.hpp"
33 #include "runtime/atomic.inline.hpp"
34 #include "runtime/frame.inline.hpp"
35 #include "runtime/init.hpp"
36 #include "runtime/os.hpp"
37 #include "runtime/thread.inline.hpp"
38 #include "runtime/vmThread.hpp"
39 #include "runtime/vm_operations.hpp"
40 #include "services/memTracker.hpp"
41 #include "utilities/debug.hpp"
42 #include "utilities/decoder.hpp"
43 #include "utilities/defaultStream.hpp"
44 #include "utilities/errorReporter.hpp"
45 #include "utilities/events.hpp"
46 #include "utilities/top.hpp"
47 #include "utilities/vmError.hpp"
48
49 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
50
51 // List of environment variables that should be reported in error log file.
52 const char *env_list[] = {
53 // All platforms
54 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
55 "JAVA_COMPILER", "PATH", "USERNAME",
56
57 // Env variables that are defined on Solaris/Linux/BSD
58 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
59 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
60
61 // defined on Linux
62 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
63
64 // defined on Darwin
65 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
66 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
67 "DYLD_INSERT_LIBRARIES",
68
69 // defined on Windows
70 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
71
72 (const char *)0
73 };
74
75 // Fatal error handler for internal errors and crashes.
76 //
77 // The default behavior of fatal error handler is to print a brief message
78 // to standard out (defaultStream::output_fd()), then save detailed information
79 // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple
80 // threads are having troubles at the same time, only one error is reported.
81 // The thread that is reporting error will abort VM when it is done, all other
82 // threads are blocked forever inside report_and_die().
83
84 // Constructor for crashes
85 VMError::VMError(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) {
86 _thread = thread;
87 _id = sig;
88 _pc = pc;
89 _siginfo = siginfo;
90 _context = context;
91
92 _verbose = false;
93 _current_step = 0;
94 _current_step_info = NULL;
95
96 _message = NULL;
97 _detail_msg = NULL;
98 _filename = NULL;
99 _lineno = 0;
100
101 _size = 0;
102 }
103
104 // Constructor for internal errors
105 VMError::VMError(Thread* thread, const char* filename, int lineno,
106 const char* message, const char * detail_msg)
107 {
108 _thread = thread;
109 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal
110 _filename = filename;
111 _lineno = lineno;
112 _message = message;
113 _detail_msg = detail_msg;
114
115 _verbose = false;
116 _current_step = 0;
117 _current_step_info = NULL;
118
119 _pc = NULL;
120 _siginfo = NULL;
121 _context = NULL;
122
123 _size = 0;
124 }
125
126 // Constructor for OOM errors
127 VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size,
128 VMErrorType vm_err_type, const char* message) {
129 _thread = thread;
130 _id = vm_err_type; // Value that's not an OS exception/signal
131 _filename = filename;
132 _lineno = lineno;
133 _message = message;
134 _detail_msg = NULL;
135
136 _verbose = false;
137 _current_step = 0;
138 _current_step_info = NULL;
139
140 _pc = NULL;
141 _siginfo = NULL;
142 _context = NULL;
143
144 _size = size;
145 }
146
147
148 // Constructor for non-fatal errors
149 VMError::VMError(const char* message) {
150 _thread = NULL;
151 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal
152 _filename = NULL;
153 _lineno = 0;
154 _message = message;
155 _detail_msg = NULL;
156
157 _verbose = false;
158 _current_step = 0;
159 _current_step_info = NULL;
160
161 _pc = NULL;
162 _siginfo = NULL;
163 _context = NULL;
164
165 _size = 0;
166 }
167
168 // -XX:OnError=<string>, where <string> can be a list of commands, separated
169 // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by
170 // a single "%". Some examples:
171 //
172 // -XX:OnError="pmap %p" // show memory map
173 // -XX:OnError="gcore %p; dbx - %p" // dump core and launch debugger
174 // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com"
175 // -XX:OnError="kill -9 %p" // ?#!@#
176
177 // A simple parser for -XX:OnError, usage:
178 // ptr = OnError;
179 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
180 // ... ...
181 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
182 if (ptr == NULL || *ptr == NULL) return NULL;
183
184 const char* cmd = *ptr;
185
186 // skip leading blanks or ';'
187 while (*cmd == ' ' || *cmd == ';') cmd++;
188
189 if (*cmd == '\0') return NULL;
190
191 const char * cmdend = cmd;
192 while (*cmdend != '\0' && *cmdend != ';') cmdend++;
193
194 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
195
196 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
197 return buf;
198 }
199
200
201 static void print_bug_submit_message(outputStream *out, Thread *thread) {
202 if (out == NULL) return;
203 out->print_raw_cr("# If you would like to submit a bug report, please visit:");
204 out->print_raw ("# ");
205 out->print_raw_cr(Arguments::java_vendor_url_bug());
206 // If the crash is in native code, encourage user to submit a bug to the
207 // provider of that code.
208 if (thread && thread->is_Java_thread() &&
209 !thread->is_hidden_from_external_view()) {
210 JavaThread* jt = (JavaThread*)thread;
211 if (jt->thread_state() == _thread_in_native) {
212 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
213 }
214 }
215 out->print_raw_cr("#");
216 }
217
218 bool VMError::coredump_status;
219 char VMError::coredump_message[O_BUFLEN];
220
221 void VMError::record_coredump_status(const char* message, bool status) {
222 coredump_status = status;
223 strncpy(coredump_message, message, sizeof(coredump_message));
224 coredump_message[sizeof(coredump_message)-1] = 0;
225 }
226
227
228 // Return a string to describe the error
229 char* VMError::error_string(char* buf, int buflen) {
230 char signame_buf[64];
231 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
232
233 if (signame) {
234 jio_snprintf(buf, buflen,
235 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" INTPTR_FORMAT,
236 signame, _id, _pc,
237 os::current_process_id(), os::current_thread_id());
238 } else if (_filename != NULL && _lineno > 0) {
239 // skip directory names
240 char separator = os::file_separator()[0];
241 const char *p = strrchr(_filename, separator);
242 int n = jio_snprintf(buf, buflen,
243 "Internal Error at %s:%d, pid=%d, tid=" INTPTR_FORMAT,
244 p ? p + 1 : _filename, _lineno,
245 os::current_process_id(), os::current_thread_id());
246 if (n >= 0 && n < buflen && _message) {
247 if (_detail_msg) {
248 jio_snprintf(buf + n, buflen - n, "%s%s: %s",
249 os::line_separator(), _message, _detail_msg);
250 } else {
251 jio_snprintf(buf + n, buflen - n, "%sError: %s",
252 os::line_separator(), _message);
253 }
254 }
255 } else {
256 jio_snprintf(buf, buflen,
257 "Internal Error (0x%x), pid=%d, tid=" INTPTR_FORMAT,
258 _id, os::current_process_id(), os::current_thread_id());
259 }
260
261 return buf;
262 }
263
264 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
265 char* buf, int buflen, bool verbose) {
266 #ifdef ZERO
267 if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
268 // StackFrameStream uses the frame anchor, which may not have
269 // been set up. This can be done at any time in Zero, however,
270 // so if it hasn't been set up then we just set it up now and
271 // clear it again when we're done.
272 bool has_last_Java_frame = jt->has_last_Java_frame();
273 if (!has_last_Java_frame)
274 jt->set_last_Java_frame();
275 st->print("Java frames:");
276
277 // If the top frame is a Shark frame and the frame anchor isn't
278 // set up then it's possible that the information in the frame
279 // is garbage: it could be from a previous decache, or it could
280 // simply have never been written. So we print a warning...
281 StackFrameStream sfs(jt);
282 if (!has_last_Java_frame && !sfs.is_done()) {
283 if (sfs.current()->zeroframe()->is_shark_frame()) {
284 st->print(" (TOP FRAME MAY BE JUNK)");
285 }
286 }
287 st->cr();
288
289 // Print the frames
290 for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
291 sfs.current()->zero_print_on_error(i, st, buf, buflen);
292 st->cr();
293 }
294
295 // Reset the frame anchor if necessary
296 if (!has_last_Java_frame)
297 jt->reset_last_Java_frame();
298 }
299 #else
300 if (jt->has_last_Java_frame()) {
301 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
302 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
303 sfs.current()->print_on_error(st, buf, buflen, verbose);
304 st->cr();
305 }
306 }
307 #endif // ZERO
308 }
309
310 void VMError::print_oom_reasons(outputStream* st) {
311 st->print_cr("# Possible reasons:");
312 st->print_cr("# The system is out of physical RAM or swap space");
313 st->print_cr("# In 32 bit mode, the process size limit was hit");
314 st->print_cr("# Possible solutions:");
315 st->print_cr("# Reduce memory load on the system");
316 st->print_cr("# Increase physical memory or swap space");
317 st->print_cr("# Check if swap backing store is full");
318 st->print_cr("# Use 64 bit Java on a 64 bit OS");
319 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)");
320 st->print_cr("# Decrease number of Java threads");
321 st->print_cr("# Decrease Java thread stack sizes (-Xss)");
322 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize=");
323 st->print_cr("# This output file may be truncated or incomplete.");
324 }
325
326 const char* VMError::gc_mode() {
327 if (UseG1GC) return "g1 gc";
328 if (UseParallelGC) return "parallel gc";
329 if (UseConcMarkSweepGC) return "concurrent mark sweep gc";
330 if (UseSerialGC) return "serial gc";
331 return "ERROR in GC mode";
332 }
333
334 // This is the main function to report a fatal error. Only one thread can
335 // call this function, so we don't need to worry about MT-safety. But it's
336 // possible that the error handler itself may crash or die on an internal
337 // error, for example, when the stack/heap is badly damaged. We must be
338 // able to handle recursive errors that happen inside error handler.
339 //
340 // Error reporting is done in several steps. If a crash or internal error
341 // occurred when reporting an error, the nested signal/exception handler
342 // can skip steps that are already (or partially) done. Error reporting will
343 // continue from the next step. This allows us to retrieve and print
344 // information that may be unsafe to get after a fatal error. If it happens,
345 // you may find nested report_and_die() frames when you look at the stack
346 // in a debugger.
347 //
348 // In general, a hang in error handler is much worse than a crash or internal
349 // error, as it's harder to recover from a hang. Deadlock can happen if we
350 // try to grab a lock that is already owned by current thread, or if the
351 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
352 // error handler and all the functions it called should avoid grabbing any
353 // lock. An important thing to notice is that memory allocation needs a lock.
354 //
355 // We should avoid using large stack allocated buffers. Many errors happen
356 // when stack space is already low. Making things even worse is that there
357 // could be nested report_and_die() calls on stack (see above). Only one
358 // thread can report error, so large buffers are statically allocated in data
359 // segment.
360
361 void VMError::report(outputStream* st) {
362 # define BEGIN if (_current_step == 0) { _current_step = 1;
363 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s;
364 # define END }
365
366 // don't allocate large buffer on stack
367 static char buf[O_BUFLEN];
368
369 BEGIN
370
371 STEP(10, "(printing fatal error message)")
372
373 st->print_cr("#");
374 if (should_report_bug(_id)) {
375 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
376 } else {
377 st->print_cr("# There is insufficient memory for the Java "
378 "Runtime Environment to continue.");
379 }
380
381 #ifndef PRODUCT
382 // Error handler self tests
383
384 // test secondary error handling. Test it twice, to test that resetting
385 // error handler after a secondary crash works.
386 STEP(20, "(test secondary crash 1)")
387 if (_verbose && TestCrashInErrorHandler != 0) {
388 st->print_cr("Will crash now (TestCrashInErrorHandler=%d)...",
389 TestCrashInErrorHandler);
390 controlled_crash(TestCrashInErrorHandler);
391 }
392
393 STEP(30, "(test secondary crash 2)")
394 if (_verbose && TestCrashInErrorHandler != 0) {
395 st->print_cr("Will crash now (TestCrashInErrorHandler=%d)...",
396 TestCrashInErrorHandler);
397 controlled_crash(TestCrashInErrorHandler);
398 }
399
400 STEP(40, "(test safefetch in error handler)")
401 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice
402 // to test that resetting the signal handler works correctly.
403 if (_verbose && TestSafeFetchInErrorHandler) {
404 st->print_cr("Will test SafeFetch...");
405 if (CanUseSafeFetch32()) {
406 int* const invalid_pointer = (int*) get_segfault_address();
407 const int x = 0x76543210;
408 int i1 = SafeFetch32(invalid_pointer, x);
409 int i2 = SafeFetch32(invalid_pointer, x);
410 if (i1 == x && i2 == x) {
411 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern
412 } else {
413 st->print_cr("??");
414 }
415 } else {
416 st->print_cr("not possible; skipped.");
417 }
418 }
419 #endif // PRODUCT
420
421 STEP(50, "(printing type of error)")
422
423 switch(_id) {
424 case OOM_MALLOC_ERROR:
425 case OOM_MMAP_ERROR:
426 if (_size) {
427 st->print("# Native memory allocation ");
428 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
429 "(mmap) failed to map ");
430 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
431 st->print("%s", buf);
432 st->print(" bytes");
433 if (_message != NULL) {
434 st->print(" for ");
435 st->print("%s", _message);
436 }
437 st->cr();
438 } else {
439 if (_message != NULL) {
440 st->print("# ");
441 st->print_cr("%s", _message);
442 }
443 }
444 // In error file give some solutions
445 if (_verbose) {
446 print_oom_reasons(st);
447 } else {
448 return; // that's enough for the screen
449 }
450 break;
451 case INTERNAL_ERROR:
452 default:
453 break;
454 }
455
456 STEP(60, "(printing exception/signal name)")
457
458 st->print_cr("#");
459 st->print("# ");
460 // Is it an OS exception/signal?
461 if (os::exception_name(_id, buf, sizeof(buf))) {
462 st->print("%s", buf);
463 st->print(" (0x%x)", _id); // signal number
464 st->print(" at pc=" PTR_FORMAT, _pc);
465 } else {
466 if (should_report_bug(_id)) {
467 st->print("Internal Error");
468 } else {
469 st->print("Out of Memory Error");
470 }
471 if (_filename != NULL && _lineno > 0) {
472 #ifdef PRODUCT
473 // In product mode chop off pathname?
474 char separator = os::file_separator()[0];
475 const char *p = strrchr(_filename, separator);
476 const char *file = p ? p+1 : _filename;
477 #else
478 const char *file = _filename;
479 #endif
480 st->print(" (%s:%d)", file, _lineno);
481 } else {
482 st->print(" (0x%x)", _id);
483 }
484 }
485
486 STEP(70, "(printing current thread and pid)")
487
488 // process id, thread id
489 st->print(", pid=%d", os::current_process_id());
490 st->print(", tid=" INTPTR_FORMAT, os::current_thread_id());
491 st->cr();
492
493 STEP(80, "(printing error message)")
494
495 if (should_report_bug(_id)) { // already printed the message.
496 // error message
497 if (_detail_msg) {
498 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg);
499 } else if (_message) {
500 st->print_cr("# Error: %s", _message);
501 }
502 }
503
504 STEP(90, "(printing Java version string)")
505
506 // VM version
507 st->print_cr("#");
508 JDK_Version::current().to_string(buf, sizeof(buf));
509 const char* runtime_name = JDK_Version::runtime_name() != NULL ?
510 JDK_Version::runtime_name() : "";
511 const char* runtime_version = JDK_Version::runtime_version() != NULL ?
512 JDK_Version::runtime_version() : "";
513 st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version);
514 // This is the long version with some default settings added
515 st->print_cr("# Java VM: %s (%s, %s%s%s, %s, %s)",
516 Abstract_VM_Version::vm_name(),
517 Abstract_VM_Version::vm_release(),
518 Abstract_VM_Version::vm_info_string(),
519 TieredCompilation ? ", tiered" : "",
520 UseCompressedOops ? ", compressed oops" : "",
521 gc_mode(),
522 Abstract_VM_Version::vm_platform_string()
523 );
524
525 STEP(100, "(printing problematic frame)")
526
527 // Print current frame if we have a context (i.e. it's a crash)
528 if (_context) {
529 st->print_cr("# Problematic frame:");
530 st->print("# ");
531 frame fr = os::fetch_frame_from_context(_context);
532 fr.print_on_error(st, buf, sizeof(buf));
533 st->cr();
534 st->print_cr("#");
535 }
536
537 STEP(110, "(printing core file information)")
538 st->print("# ");
539 if (CreateCoredumpOnCrash) {
540 if (coredump_status) {
541 st->print("Core dump will be written. Default location: %s", coredump_message);
542 } else {
543 st->print("No core dump will be written. %s", coredump_message);
544 }
545 } else {
546 st->print("CreateCoredumpOnCrash turned off, no core file dumped");
547 }
548 st->cr();
549 st->print_cr("#");
550
551 STEP(120, "(printing bug submit message)")
552
553 if (should_report_bug(_id) && _verbose) {
554 print_bug_submit_message(st, _thread);
555 }
556
557 STEP(130, "(printing summary)" )
558
559 if (_verbose) {
560 st->cr();
561 st->print_cr("--------------- S U M M A R Y ------------");
562 st->cr();
563 }
564
565 STEP(140, "(printing VM option summary)" )
566
567 if (_verbose) {
568 // VM options
569 Arguments::print_summary_on(st);
570 st->cr();
571 }
572
573 STEP(150, "(printing summary machine and OS info)")
574
575 if (_verbose) {
576 os::print_summary_info(st, buf, sizeof(buf));
577 }
578
579
580 STEP(160, "(printing date and time)" )
581
582 if (_verbose) {
583 os::print_date_and_time(st, buf, sizeof(buf));
584 }
585
586 STEP(170, "(printing thread)" )
587
588 if (_verbose) {
589 st->cr();
590 st->print_cr("--------------- T H R E A D ---------------");
591 st->cr();
592 }
593
594 STEP(180, "(printing current thread)" )
595
596 // current thread
597 if (_verbose) {
598 if (_thread) {
599 st->print("Current thread (" PTR_FORMAT "): ", _thread);
600 _thread->print_on_error(st, buf, sizeof(buf));
601 st->cr();
602 } else {
603 st->print_cr("Current thread is native thread");
604 }
605 st->cr();
606 }
607
608 STEP(190, "(printing current compile task)" )
609
610 if (_verbose && _thread && _thread->is_Compiler_thread()) {
611 CompilerThread* t = (CompilerThread*)_thread;
612 if (t->task()) {
613 st->cr();
614 st->print_cr("Current CompileTask:");
615 t->task()->print_line_on_error(st, buf, sizeof(buf));
616 st->cr();
617 }
618 }
619
620
621 STEP(200, "(printing stack bounds)" )
622
623 if (_verbose) {
624 st->print("Stack: ");
625
626 address stack_top;
627 size_t stack_size;
628
629 if (_thread) {
630 stack_top = _thread->stack_base();
631 stack_size = _thread->stack_size();
632 } else {
633 stack_top = os::current_stack_base();
634 stack_size = os::current_stack_size();
635 }
636
637 address stack_bottom = stack_top - stack_size;
638 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top);
639
640 frame fr = _context ? os::fetch_frame_from_context(_context)
641 : os::current_frame();
642
643 if (fr.sp()) {
644 st->print(", sp=" PTR_FORMAT, fr.sp());
645 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
646 st->print(", free space=" SIZE_FORMAT "k", free_stack_size);
647 }
648
649 st->cr();
650 }
651
652 STEP(210, "(printing native stack)" )
653
654 if (_verbose) {
655 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
656 // We have printed the native stack in platform-specific code
657 // Windows/x64 needs special handling.
658 } else {
659 frame fr = _context ? os::fetch_frame_from_context(_context)
660 : os::current_frame();
661
662 print_native_stack(st, fr, _thread, buf, sizeof(buf));
663 }
664 }
665
666 STEP(220, "(printing Java stack)" )
667
668 if (_verbose && _thread && _thread->is_Java_thread()) {
669 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
670 }
671
672 STEP(230, "(printing target Java thread stack)" )
673
674 // printing Java thread stack trace if it is involved in GC crash
675 if (_verbose && _thread && (_thread->is_Named_thread())) {
676 JavaThread* jt = ((NamedThread *)_thread)->processed_thread();
677 if (jt != NULL) {
678 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id());
679 print_stack_trace(st, jt, buf, sizeof(buf), true);
680 }
681 }
682
683 STEP(240, "(printing siginfo)" )
684
685 // signal no, signal code, address that caused the fault
686 if (_verbose && _siginfo) {
687 st->cr();
688 os::print_siginfo(st, _siginfo);
689 st->cr();
690 }
691
692 STEP(250, "(printing register info)")
693
694 // decode register contents if possible
695 if (_verbose && _context && Universe::is_fully_initialized()) {
696 os::print_register_info(st, _context);
697 st->cr();
698 }
699
700 STEP(260, "(printing registers, top of stack, instructions near pc)")
701
702 // registers, top of stack, instructions near pc
703 if (_verbose && _context) {
704 os::print_context(st, _context);
705 st->cr();
706 }
707
708 STEP(265, "(printing code blob if possible)")
709
710 if (_verbose && _context) {
711 CodeBlob* cb = CodeCache::find_blob(_pc);
712 if (cb != NULL) {
713 if (Interpreter::contains(_pc)) {
714 // The interpreter CodeBlob is very large so try to print the codelet instead.
715 InterpreterCodelet* codelet = Interpreter::codelet_containing(_pc);
716 if (codelet != NULL) {
717 codelet->print_on(st);
718 Disassembler::decode(codelet->code_begin(), codelet->code_end(), st);
719 }
720 } else {
721 StubCodeDesc* desc = StubCodeDesc::desc_for(_pc);
722 if (desc != NULL) {
723 desc->print_on(st);
724 Disassembler::decode(desc->begin(), desc->end(), st);
725 } else {
726 Disassembler::decode(cb, st);
727 st->cr();
728 }
729 }
730 }
731 }
732
733 STEP(270, "(printing VM operation)" )
734
735 if (_verbose && _thread && _thread->is_VM_thread()) {
736 VMThread* t = (VMThread*)_thread;
737 VM_Operation* op = t->vm_operation();
738 if (op) {
739 op->print_on_error(st);
740 st->cr();
741 st->cr();
742 }
743 }
744
745 STEP(280, "(printing process)" )
746
747 if (_verbose) {
748 st->cr();
749 st->print_cr("--------------- P R O C E S S ---------------");
750 st->cr();
751 }
752
753 STEP(290, "(printing all threads)" )
754
755 // all threads
756 if (_verbose && _thread) {
757 Threads::print_on_error(st, _thread, buf, sizeof(buf));
758 st->cr();
759 }
760
761 STEP(300, "(printing VM state)" )
762
763 if (_verbose) {
764 // Safepoint state
765 st->print("VM state:");
766
767 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
768 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
769 else st->print("not at safepoint");
770
771 // Also see if error occurred during initialization or shutdown
772 if (!Universe::is_fully_initialized()) {
773 st->print(" (not fully initialized)");
774 } else if (VM_Exit::vm_exited()) {
775 st->print(" (shutting down)");
776 } else {
777 st->print(" (normal execution)");
778 }
779 st->cr();
780 st->cr();
781 }
782
783 STEP(310, "(printing owned locks on error)" )
784
785 // mutexes/monitors that currently have an owner
786 if (_verbose) {
787 print_owned_locks_on_error(st);
788 st->cr();
789 }
790
791 STEP(320, "(printing number of OutOfMemoryError and StackOverflow exceptions)")
792
793 if (_verbose && Exceptions::has_exception_counts()) {
794 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
795 Exceptions::print_exception_counts_on_error(st);
796 st->cr();
797 }
798
799 STEP(330, "(printing compressed oops mode")
800
801 if (_verbose && UseCompressedOops) {
802 Universe::print_compressed_oops_mode(st);
803 if (UseCompressedClassPointers) {
804 Metaspace::print_compressed_class_space(st);
805 }
806 st->cr();
807 }
808
809 STEP(340, "(printing heap information)" )
810
811 if (_verbose && Universe::is_fully_initialized()) {
812 Universe::heap()->print_on_error(st);
813 st->cr();
814
815 st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page());
816 st->cr();
817 }
818
819 STEP(350, "(printing code cache information)" )
820
821 if (_verbose && Universe::is_fully_initialized()) {
822 // print code cache information before vm abort
823 CodeCache::print_summary(st);
824 st->cr();
825 }
826
827 STEP(360, "(printing ring buffers)" )
828
829 if (_verbose) {
830 Events::print_all(st);
831 st->cr();
832 }
833
834 STEP(370, "(printing dynamic libraries)" )
835
836 if (_verbose) {
837 // dynamic libraries, or memory map
838 os::print_dll_info(st);
839 st->cr();
840 }
841
842 STEP(380, "(printing VM options)" )
843
844 if (_verbose) {
845 // VM options
846 Arguments::print_on(st);
847 st->cr();
848 }
849
850 STEP(390, "(printing warning if internal testing API used)" )
851
852 if (WhiteBox::used()) {
853 st->print_cr("Unsupported internal testing APIs have been used.");
854 st->cr();
855 }
856
857 STEP(400, "(printing all environment variables)" )
858
859 if (_verbose) {
860 os::print_environment_variables(st, env_list);
861 st->cr();
862 }
863
864 STEP(410, "(printing signal handlers)" )
865
866 if (_verbose) {
867 os::print_signal_handlers(st, buf, sizeof(buf));
868 st->cr();
869 }
870
871 STEP(420, "(Native Memory Tracking)" )
872 if (_verbose) {
873 MemTracker::error_report(st);
874 }
875
876 STEP(430, "(printing system)" )
877
878 if (_verbose) {
879 st->cr();
880 st->print_cr("--------------- S Y S T E M ---------------");
881 st->cr();
882 }
883
884 STEP(440, "(printing OS information)" )
885
886 if (_verbose) {
887 os::print_os_info(st);
888 st->cr();
889 }
890
891 STEP(450, "(printing CPU info)" )
892 if (_verbose) {
893 os::print_cpu_info(st, buf, sizeof(buf));
894 st->cr();
895 }
896
897 STEP(460, "(printing memory info)" )
898
899 if (_verbose) {
900 os::print_memory_info(st);
901 st->cr();
902 }
903
904 STEP(470, "(printing internal vm info)" )
905
906 if (_verbose) {
907 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
908 st->cr();
909 }
910
911 // print a defined marker to show that error handling finished correctly.
912 STEP(480, "(printing end marker)" )
913
914 if (_verbose) {
915 st->print_cr("END.");
916 }
917
918 END
919
920 # undef BEGIN
921 # undef STEP
922 # undef END
923 }
924
925 VMError* volatile VMError::first_error = NULL;
926 volatile jlong VMError::first_error_tid = -1;
927
928 // An error could happen before tty is initialized or after it has been
929 // destroyed. Here we use a very simple unbuffered fdStream for printing.
930 // Only out.print_raw() and out.print_raw_cr() should be used, as other
931 // printing methods need to allocate large buffer on stack. To format a
932 // string, use jio_snprintf() with a static buffer or use staticBufferStream.
933 fdStream VMError::out(defaultStream::output_fd());
934 fdStream VMError::log; // error log used by VMError::report_and_die()
935
936 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
937 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
938 int fd = -1;
939 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
940 // the O_EXCL flag will cause the open to fail if the file exists
941 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666);
942 }
943 return fd;
944 }
945
946 /**
947 * Construct file name for a log file and return it's file descriptor.
948 * Name and location depends on pattern, default_pattern params and access
949 * permissions.
950 */
951 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) {
952 int fd = -1;
953
954 // If possible, use specified pattern to construct log file name
955 if (pattern != NULL) {
956 fd = expand_and_open(pattern, buf, buflen, 0);
957 }
958
959 // Either user didn't specify, or the user's location failed,
960 // so use the default name in the current directory
961 if (fd == -1) {
962 const char* cwd = os::get_current_directory(buf, buflen);
963 if (cwd != NULL) {
964 size_t pos = strlen(cwd);
965 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
966 pos += fsep_len;
967 if (fsep_len > 0) {
968 fd = expand_and_open(default_pattern, buf, buflen, pos);
969 }
970 }
971 }
972
973 // try temp directory if it exists.
974 if (fd == -1) {
975 const char* tmpdir = os::get_temp_directory();
976 if (tmpdir != NULL && strlen(tmpdir) > 0) {
977 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
978 if (pos > 0) {
979 fd = expand_and_open(default_pattern, buf, buflen, pos);
980 }
981 }
982 }
983
984 return fd;
985 }
986
987 void VMError::report_and_die() {
988 // Don't allocate large buffer on stack
989 static char buffer[O_BUFLEN];
990
991 // How many errors occurred in error handler when reporting first_error.
992 static int recursive_error_count;
993
994 // We will first print a brief message to standard out (verbose = false),
995 // then save detailed information in log file (verbose = true).
996 static bool out_done = false; // done printing to standard out
997 static bool log_done = false; // done saving error log
998 static bool transmit_report_done = false; // done error reporting
999
1000 if (SuppressFatalErrorMessage) {
1001 os::abort(CreateCoredumpOnCrash);
1002 }
1003 jlong mytid = os::current_thread_id();
1004 if (first_error == NULL &&
1005 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) {
1006
1007 // first time
1008 first_error_tid = mytid;
1009 set_error_reported();
1010
1011 if (ShowMessageBoxOnError || PauseAtExit) {
1012 show_message_box(buffer, sizeof(buffer));
1013
1014 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
1015 // WatcherThread can kill JVM if the error handler hangs.
1016 ShowMessageBoxOnError = false;
1017 }
1018
1019 os::check_dump_limit(buffer, sizeof(buffer));
1020
1021 // reset signal handlers or exception filter; make sure recursive crashes
1022 // are handled properly.
1023 reset_signal_handlers();
1024
1025 } else {
1026 // If UseOsErrorReporting we call this for each level of the call stack
1027 // while searching for the exception handler. Only the first level needs
1028 // to be reported.
1029 if (UseOSErrorReporting && log_done) return;
1030
1031 // This is not the first error, see if it happened in a different thread
1032 // or in the same thread during error reporting.
1033 if (first_error_tid != mytid) {
1034 char msgbuf[64];
1035 jio_snprintf(msgbuf, sizeof(msgbuf),
1036 "[thread " INT64_FORMAT " also had an error]",
1037 mytid);
1038 out.print_raw_cr(msgbuf);
1039
1040 // error reporting is not MT-safe, block current thread
1041 os::infinite_sleep();
1042
1043 } else {
1044 if (recursive_error_count++ > 30) {
1045 out.print_raw_cr("[Too many errors, abort]");
1046 os::die();
1047 }
1048
1049 jio_snprintf(buffer, sizeof(buffer),
1050 "[error occurred during error reporting %s, id 0x%x]",
1051 first_error ? first_error->_current_step_info : "",
1052 _id);
1053 if (log.is_open()) {
1054 log.cr();
1055 log.print_raw_cr(buffer);
1056 log.cr();
1057 } else {
1058 out.cr();
1059 out.print_raw_cr(buffer);
1060 out.cr();
1061 }
1062 }
1063 }
1064
1065 // print to screen
1066 if (!out_done) {
1067 first_error->_verbose = false;
1068
1069 staticBufferStream sbs(buffer, sizeof(buffer), &out);
1070 first_error->report(&sbs);
1071
1072 out_done = true;
1073
1074 first_error->_current_step = 0; // reset current_step
1075 first_error->_current_step_info = ""; // reset current_step string
1076 }
1077
1078 // print to error log file
1079 if (!log_done) {
1080 first_error->_verbose = true;
1081
1082 // see if log file is already open
1083 if (!log.is_open()) {
1084 // open log file
1085 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer));
1086 if (fd != -1) {
1087 out.print_raw("# An error report file with more information is saved as:\n# ");
1088 out.print_raw_cr(buffer);
1089
1090 log.set_fd(fd);
1091 } else {
1092 out.print_raw_cr("# Can not save log file, dump to screen..");
1093 log.set_fd(defaultStream::output_fd());
1094 /* Error reporting currently needs dumpfile.
1095 * Maybe implement direct streaming in the future.*/
1096 transmit_report_done = true;
1097 }
1098 }
1099
1100 staticBufferStream sbs(buffer, O_BUFLEN, &log);
1101 first_error->report(&sbs);
1102 first_error->_current_step = 0; // reset current_step
1103 first_error->_current_step_info = ""; // reset current_step string
1104
1105 // Run error reporting to determine whether or not to report the crash.
1106 if (!transmit_report_done && should_report_bug(first_error->_id)) {
1107 transmit_report_done = true;
1108 const int fd2 = ::dup(log.fd());
1109 FILE* const hs_err = ::fdopen(fd2, "r");
1110 if (NULL != hs_err) {
1111 ErrorReporter er;
1112 er.call(hs_err, buffer, O_BUFLEN);
1113 }
1114 ::fclose(hs_err);
1115 }
1116
1117 if (log.fd() != defaultStream::output_fd()) {
1118 close(log.fd());
1119 }
1120
1121 log.set_fd(-1);
1122 log_done = true;
1123 }
1124
1125
1126 static bool skip_OnError = false;
1127 if (!skip_OnError && OnError && OnError[0]) {
1128 skip_OnError = true;
1129
1130 out.print_raw_cr("#");
1131 out.print_raw ("# -XX:OnError=\"");
1132 out.print_raw (OnError);
1133 out.print_raw_cr("\"");
1134
1135 char* cmd;
1136 const char* ptr = OnError;
1137 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1138 out.print_raw ("# Executing ");
1139 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1140 out.print_raw ("/bin/sh -c ");
1141 #elif defined(SOLARIS)
1142 out.print_raw ("/usr/bin/sh -c ");
1143 #endif
1144 out.print_raw ("\"");
1145 out.print_raw (cmd);
1146 out.print_raw_cr("\" ...");
1147
1148 if (os::fork_and_exec(cmd) < 0) {
1149 out.print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno);
1150 }
1151 }
1152
1153 // done with OnError
1154 OnError = NULL;
1155 }
1156
1157 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay
1158 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1159 skip_replay = true;
1160 ciEnv* env = ciEnv::current();
1161 if (env != NULL) {
1162 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer));
1163 if (fd != -1) {
1164 FILE* replay_data_file = os::open(fd, "w");
1165 if (replay_data_file != NULL) {
1166 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1167 env->dump_replay_data_unsafe(&replay_data_stream);
1168 out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1169 out.print_raw_cr(buffer);
1170 } else {
1171 out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1172 out.print_raw_cr(strerror(os::get_last_error()));
1173 }
1174 }
1175 }
1176 }
1177
1178 static bool skip_bug_url = !should_report_bug(first_error->_id);
1179 if (!skip_bug_url) {
1180 skip_bug_url = true;
1181
1182 out.print_raw_cr("#");
1183 print_bug_submit_message(&out, _thread);
1184 }
1185
1186 if (!UseOSErrorReporting) {
1187 // os::abort() will call abort hooks, try it first.
1188 static bool skip_os_abort = false;
1189 if (!skip_os_abort) {
1190 skip_os_abort = true;
1191 bool dump_core = should_report_bug(first_error->_id);
1192 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context);
1193 }
1194
1195 // if os::abort() doesn't abort, try os::die();
1196 os::die();
1197 }
1198 }
1199
1200 /*
1201 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1202 * ensures utilities such as jmap can observe the process is a consistent state.
1203 */
1204 class VM_ReportJavaOutOfMemory : public VM_Operation {
1205 private:
1206 VMError *_err;
1207 public:
1208 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; }
1209 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
1210 void doit();
1211 };
1212
1213 void VM_ReportJavaOutOfMemory::doit() {
1214 // Don't allocate large buffer on stack
1215 static char buffer[O_BUFLEN];
1216
1217 tty->print_cr("#");
1218 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message());
1219 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1220
1221 // make heap parsability
1222 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
1223
1224 char* cmd;
1225 const char* ptr = OnOutOfMemoryError;
1226 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1227 tty->print("# Executing ");
1228 #if defined(LINUX)
1229 tty->print ("/bin/sh -c ");
1230 #elif defined(SOLARIS)
1231 tty->print ("/usr/bin/sh -c ");
1232 #endif
1233 tty->print_cr("\"%s\"...", cmd);
1234
1235 if (os::fork_and_exec(cmd) < 0) {
1236 tty->print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno);
1237 }
1238 }
1239 }
1240
1241 void VMError::report_java_out_of_memory() {
1242 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1243 MutexLocker ml(Heap_lock);
1244 VM_ReportJavaOutOfMemory op(this);
1245 VMThread::execute(&op);
1246 }
1247 }