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=" UINTX_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=" UINTX_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=" UINTX_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=" UINTX_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, %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 #if INCLUDE_JVMCI
521 EnableJVMCI ? ", jvmci" : "",
522 UseJVMCICompiler ? ", jvmci compiler" : "",
523 #else
524 "", "",
525 #endif
526 UseCompressedOops ? ", compressed oops" : "",
527 gc_mode(),
528 Abstract_VM_Version::vm_platform_string()
529 );
530
531 STEP(100, "(printing problematic frame)")
532
533 // Print current frame if we have a context (i.e. it's a crash)
534 if (_context) {
535 st->print_cr("# Problematic frame:");
536 st->print("# ");
537 frame fr = os::fetch_frame_from_context(_context);
538 fr.print_on_error(st, buf, sizeof(buf));
539 st->cr();
540 st->print_cr("#");
541 }
542
543 STEP(110, "(printing core file information)")
544 st->print("# ");
545 if (CreateCoredumpOnCrash) {
546 if (coredump_status) {
547 st->print("Core dump will be written. Default location: %s", coredump_message);
548 } else {
549 st->print("No core dump will be written. %s", coredump_message);
550 }
551 } else {
552 st->print("CreateCoredumpOnCrash turned off, no core file dumped");
553 }
554 st->cr();
555 st->print_cr("#");
556
557 STEP(120, "(printing bug submit message)")
558
559 if (should_report_bug(_id) && _verbose) {
560 print_bug_submit_message(st, _thread);
561 }
562
563 STEP(130, "(printing summary)" )
564
565 if (_verbose) {
566 st->cr();
567 st->print_cr("--------------- S U M M A R Y ------------");
568 st->cr();
569 }
570
571 STEP(140, "(printing VM option summary)" )
572
573 if (_verbose) {
574 // VM options
575 Arguments::print_summary_on(st);
576 st->cr();
577 }
578
579 STEP(150, "(printing summary machine and OS info)")
580
581 if (_verbose) {
582 os::print_summary_info(st, buf, sizeof(buf));
583 }
584
585
586 STEP(160, "(printing date and time)" )
587
588 if (_verbose) {
589 os::print_date_and_time(st, buf, sizeof(buf));
590 }
591
592 STEP(170, "(printing thread)" )
593
594 if (_verbose) {
595 st->cr();
596 st->print_cr("--------------- T H R E A D ---------------");
597 st->cr();
598 }
599
600 STEP(180, "(printing current thread)" )
601
602 // current thread
603 if (_verbose) {
604 if (_thread) {
605 st->print("Current thread (" PTR_FORMAT "): ", _thread);
606 _thread->print_on_error(st, buf, sizeof(buf));
607 st->cr();
608 } else {
609 st->print_cr("Current thread is native thread");
610 }
611 st->cr();
612 }
613
614 STEP(190, "(printing current compile task)" )
615
616 if (_verbose && _thread && _thread->is_Compiler_thread()) {
617 CompilerThread* t = (CompilerThread*)_thread;
618 if (t->task()) {
619 st->cr();
620 st->print_cr("Current CompileTask:");
621 t->task()->print_line_on_error(st, buf, sizeof(buf));
622 st->cr();
623 }
624 }
625
626
627 STEP(200, "(printing stack bounds)" )
628
629 if (_verbose) {
630 st->print("Stack: ");
631
632 address stack_top;
633 size_t stack_size;
634
635 if (_thread) {
636 stack_top = _thread->stack_base();
637 stack_size = _thread->stack_size();
638 } else {
639 stack_top = os::current_stack_base();
640 stack_size = os::current_stack_size();
641 }
642
643 address stack_bottom = stack_top - stack_size;
644 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top);
645
646 frame fr = _context ? os::fetch_frame_from_context(_context)
647 : os::current_frame();
648
649 if (fr.sp()) {
650 st->print(", sp=" PTR_FORMAT, fr.sp());
651 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
652 st->print(", free space=" SIZE_FORMAT "k", free_stack_size);
653 }
654
655 st->cr();
656 }
657
658 STEP(210, "(printing native stack)" )
659
660 if (_verbose) {
661 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
662 // We have printed the native stack in platform-specific code
663 // Windows/x64 needs special handling.
664 } else {
665 frame fr = _context ? os::fetch_frame_from_context(_context)
666 : os::current_frame();
667
668 print_native_stack(st, fr, _thread, buf, sizeof(buf));
669 }
670 }
671
672 STEP(220, "(printing Java stack)" )
673
674 if (_verbose && _thread && _thread->is_Java_thread()) {
675 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
676 }
677
678 STEP(230, "(printing target Java thread stack)" )
679
680 // printing Java thread stack trace if it is involved in GC crash
681 if (_verbose && _thread && (_thread->is_Named_thread())) {
682 JavaThread* jt = ((NamedThread *)_thread)->processed_thread();
683 if (jt != NULL) {
684 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id());
685 print_stack_trace(st, jt, buf, sizeof(buf), true);
686 }
687 }
688
689 STEP(240, "(printing siginfo)" )
690
691 // signal no, signal code, address that caused the fault
692 if (_verbose && _siginfo) {
693 st->cr();
694 os::print_siginfo(st, _siginfo);
695 st->cr();
696 }
697
698 STEP(250, "(printing register info)")
699
700 // decode register contents if possible
701 if (_verbose && _context && Universe::is_fully_initialized()) {
702 os::print_register_info(st, _context);
703 st->cr();
704 }
705
706 STEP(260, "(printing registers, top of stack, instructions near pc)")
707
708 // registers, top of stack, instructions near pc
709 if (_verbose && _context) {
710 os::print_context(st, _context);
711 st->cr();
712 }
713
714 STEP(265, "(printing code blob if possible)")
715
716 if (_verbose && _context) {
717 CodeBlob* cb = CodeCache::find_blob(_pc);
718 if (cb != NULL) {
719 if (Interpreter::contains(_pc)) {
720 // The interpreter CodeBlob is very large so try to print the codelet instead.
721 InterpreterCodelet* codelet = Interpreter::codelet_containing(_pc);
722 if (codelet != NULL) {
723 codelet->print_on(st);
724 Disassembler::decode(codelet->code_begin(), codelet->code_end(), st);
725 }
726 } else {
727 StubCodeDesc* desc = StubCodeDesc::desc_for(_pc);
728 if (desc != NULL) {
729 desc->print_on(st);
730 Disassembler::decode(desc->begin(), desc->end(), st);
731 } else {
732 Disassembler::decode(cb, st);
733 st->cr();
734 }
735 }
736 }
737 }
738
739 STEP(270, "(printing VM operation)" )
740
741 if (_verbose && _thread && _thread->is_VM_thread()) {
742 VMThread* t = (VMThread*)_thread;
743 VM_Operation* op = t->vm_operation();
744 if (op) {
745 op->print_on_error(st);
746 st->cr();
747 st->cr();
748 }
749 }
750
751 STEP(280, "(printing process)" )
752
753 if (_verbose) {
754 st->cr();
755 st->print_cr("--------------- P R O C E S S ---------------");
756 st->cr();
757 }
758
759 STEP(290, "(printing all threads)" )
760
761 // all threads
762 if (_verbose && _thread) {
763 Threads::print_on_error(st, _thread, buf, sizeof(buf));
764 st->cr();
765 }
766
767 STEP(300, "(printing VM state)" )
768
769 if (_verbose) {
770 // Safepoint state
771 st->print("VM state:");
772
773 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
774 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
775 else st->print("not at safepoint");
776
777 // Also see if error occurred during initialization or shutdown
778 if (!Universe::is_fully_initialized()) {
779 st->print(" (not fully initialized)");
780 } else if (VM_Exit::vm_exited()) {
781 st->print(" (shutting down)");
782 } else {
783 st->print(" (normal execution)");
784 }
785 st->cr();
786 st->cr();
787 }
788
789 STEP(310, "(printing owned locks on error)" )
790
791 // mutexes/monitors that currently have an owner
792 if (_verbose) {
793 print_owned_locks_on_error(st);
794 st->cr();
795 }
796
797 STEP(320, "(printing number of OutOfMemoryError and StackOverflow exceptions)")
798
799 if (_verbose && Exceptions::has_exception_counts()) {
800 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
801 Exceptions::print_exception_counts_on_error(st);
802 st->cr();
803 }
804
805 STEP(330, "(printing compressed oops mode")
806
807 if (_verbose && UseCompressedOops) {
808 Universe::print_compressed_oops_mode(st);
809 if (UseCompressedClassPointers) {
810 Metaspace::print_compressed_class_space(st);
811 }
812 st->cr();
813 }
814
815 STEP(340, "(printing heap information)" )
816
817 if (_verbose && Universe::is_fully_initialized()) {
818 Universe::heap()->print_on_error(st);
819 st->cr();
820
821 st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page());
822 st->cr();
823 }
824
825 STEP(350, "(printing code cache information)" )
826
827 if (_verbose && Universe::is_fully_initialized()) {
828 // print code cache information before vm abort
829 CodeCache::print_summary(st);
830 st->cr();
831 }
832
833 STEP(360, "(printing ring buffers)" )
834
835 if (_verbose) {
836 Events::print_all(st);
837 st->cr();
838 }
839
840 STEP(370, "(printing dynamic libraries)" )
841
842 if (_verbose) {
843 // dynamic libraries, or memory map
844 os::print_dll_info(st);
845 st->cr();
846 }
847
848 STEP(380, "(printing VM options)" )
849
850 if (_verbose) {
851 // VM options
852 Arguments::print_on(st);
853 st->cr();
854 }
855
856 STEP(390, "(printing warning if internal testing API used)" )
857
858 if (WhiteBox::used()) {
859 st->print_cr("Unsupported internal testing APIs have been used.");
860 st->cr();
861 }
862
863 STEP(400, "(printing all environment variables)" )
864
865 if (_verbose) {
866 os::print_environment_variables(st, env_list);
867 st->cr();
868 }
869
870 STEP(410, "(printing signal handlers)" )
871
872 if (_verbose) {
873 os::print_signal_handlers(st, buf, sizeof(buf));
874 st->cr();
875 }
876
877 STEP(420, "(Native Memory Tracking)" )
878 if (_verbose) {
879 MemTracker::error_report(st);
880 }
881
882 STEP(430, "(printing system)" )
883
884 if (_verbose) {
885 st->cr();
886 st->print_cr("--------------- S Y S T E M ---------------");
887 st->cr();
888 }
889
890 STEP(440, "(printing OS information)" )
891
892 if (_verbose) {
893 os::print_os_info(st);
894 st->cr();
895 }
896
897 STEP(450, "(printing CPU info)" )
898 if (_verbose) {
899 os::print_cpu_info(st, buf, sizeof(buf));
900 st->cr();
901 }
902
903 STEP(460, "(printing memory info)" )
904
905 if (_verbose) {
906 os::print_memory_info(st);
907 st->cr();
908 }
909
910 STEP(470, "(printing internal vm info)" )
911
912 if (_verbose) {
913 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
914 st->cr();
915 }
916
917 // print a defined marker to show that error handling finished correctly.
918 STEP(480, "(printing end marker)" )
919
920 if (_verbose) {
921 st->print_cr("END.");
922 }
923
924 END
925
926 # undef BEGIN
927 # undef STEP
928 # undef END
929 }
930
931 VMError* volatile VMError::first_error = NULL;
932 volatile jlong VMError::first_error_tid = -1;
933
934 // An error could happen before tty is initialized or after it has been
935 // destroyed. Here we use a very simple unbuffered fdStream for printing.
936 // Only out.print_raw() and out.print_raw_cr() should be used, as other
937 // printing methods need to allocate large buffer on stack. To format a
938 // string, use jio_snprintf() with a static buffer or use staticBufferStream.
939 fdStream VMError::out(defaultStream::output_fd());
940 fdStream VMError::log; // error log used by VMError::report_and_die()
941
942 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
943 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
944 int fd = -1;
945 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
946 // the O_EXCL flag will cause the open to fail if the file exists
947 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666);
948 }
949 return fd;
950 }
951
952 /**
953 * Construct file name for a log file and return it's file descriptor.
954 * Name and location depends on pattern, default_pattern params and access
955 * permissions.
956 */
957 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) {
958 int fd = -1;
959
960 // If possible, use specified pattern to construct log file name
961 if (pattern != NULL) {
962 fd = expand_and_open(pattern, buf, buflen, 0);
963 }
964
965 // Either user didn't specify, or the user's location failed,
966 // so use the default name in the current directory
967 if (fd == -1) {
968 const char* cwd = os::get_current_directory(buf, buflen);
969 if (cwd != NULL) {
970 size_t pos = strlen(cwd);
971 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
972 pos += fsep_len;
973 if (fsep_len > 0) {
974 fd = expand_and_open(default_pattern, buf, buflen, pos);
975 }
976 }
977 }
978
979 // try temp directory if it exists.
980 if (fd == -1) {
981 const char* tmpdir = os::get_temp_directory();
982 if (tmpdir != NULL && strlen(tmpdir) > 0) {
983 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
984 if (pos > 0) {
985 fd = expand_and_open(default_pattern, buf, buflen, pos);
986 }
987 }
988 }
989
990 return fd;
991 }
992
993 void VMError::report_and_die() {
994 // Don't allocate large buffer on stack
995 static char buffer[O_BUFLEN];
996
997 // How many errors occurred in error handler when reporting first_error.
998 static int recursive_error_count;
999
1000 // We will first print a brief message to standard out (verbose = false),
1001 // then save detailed information in log file (verbose = true).
1002 static bool out_done = false; // done printing to standard out
1003 static bool log_done = false; // done saving error log
1004 static bool transmit_report_done = false; // done error reporting
1005
1006 if (SuppressFatalErrorMessage) {
1007 os::abort(CreateCoredumpOnCrash);
1008 }
1009 jlong mytid = os::current_thread_id();
1010 if (first_error == NULL &&
1011 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) {
1012
1013 // first time
1014 first_error_tid = mytid;
1015 set_error_reported();
1016
1017 if (ShowMessageBoxOnError || PauseAtExit) {
1018 show_message_box(buffer, sizeof(buffer));
1019
1020 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
1021 // WatcherThread can kill JVM if the error handler hangs.
1022 ShowMessageBoxOnError = false;
1023 }
1024
1025 os::check_dump_limit(buffer, sizeof(buffer));
1026
1027 // reset signal handlers or exception filter; make sure recursive crashes
1028 // are handled properly.
1029 reset_signal_handlers();
1030
1031 } else {
1032 // If UseOsErrorReporting we call this for each level of the call stack
1033 // while searching for the exception handler. Only the first level needs
1034 // to be reported.
1035 if (UseOSErrorReporting && log_done) return;
1036
1037 // This is not the first error, see if it happened in a different thread
1038 // or in the same thread during error reporting.
1039 if (first_error_tid != mytid) {
1040 char msgbuf[64];
1041 jio_snprintf(msgbuf, sizeof(msgbuf),
1042 "[thread " INT64_FORMAT " also had an error]",
1043 mytid);
1044 out.print_raw_cr(msgbuf);
1045
1046 // error reporting is not MT-safe, block current thread
1047 os::infinite_sleep();
1048
1049 } else {
1050 if (recursive_error_count++ > 30) {
1051 out.print_raw_cr("[Too many errors, abort]");
1052 os::die();
1053 }
1054
1055 jio_snprintf(buffer, sizeof(buffer),
1056 "[error occurred during error reporting %s, id 0x%x]",
1057 first_error ? first_error->_current_step_info : "",
1058 _id);
1059 if (log.is_open()) {
1060 log.cr();
1061 log.print_raw_cr(buffer);
1062 log.cr();
1063 } else {
1064 out.cr();
1065 out.print_raw_cr(buffer);
1066 out.cr();
1067 }
1068 }
1069 }
1070
1071 // print to screen
1072 if (!out_done) {
1073 first_error->_verbose = false;
1074
1075 staticBufferStream sbs(buffer, sizeof(buffer), &out);
1076 first_error->report(&sbs);
1077
1078 out_done = true;
1079
1080 first_error->_current_step = 0; // reset current_step
1081 first_error->_current_step_info = ""; // reset current_step string
1082 }
1083
1084 // print to error log file
1085 if (!log_done) {
1086 first_error->_verbose = true;
1087
1088 // see if log file is already open
1089 if (!log.is_open()) {
1090 // open log file
1091 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer));
1092 if (fd != -1) {
1093 out.print_raw("# An error report file with more information is saved as:\n# ");
1094 out.print_raw_cr(buffer);
1095
1096 log.set_fd(fd);
1097 } else {
1098 out.print_raw_cr("# Can not save log file, dump to screen..");
1099 log.set_fd(defaultStream::output_fd());
1100 /* Error reporting currently needs dumpfile.
1101 * Maybe implement direct streaming in the future.*/
1102 transmit_report_done = true;
1103 }
1104 }
1105
1106 staticBufferStream sbs(buffer, O_BUFLEN, &log);
1107 first_error->report(&sbs);
1108 first_error->_current_step = 0; // reset current_step
1109 first_error->_current_step_info = ""; // reset current_step string
1110
1111 // Run error reporting to determine whether or not to report the crash.
1112 if (!transmit_report_done && should_report_bug(first_error->_id)) {
1113 transmit_report_done = true;
1114 const int fd2 = ::dup(log.fd());
1115 FILE* const hs_err = ::fdopen(fd2, "r");
1116 if (NULL != hs_err) {
1117 ErrorReporter er;
1118 er.call(hs_err, buffer, O_BUFLEN);
1119 }
1120 ::fclose(hs_err);
1121 }
1122
1123 if (log.fd() != defaultStream::output_fd()) {
1124 close(log.fd());
1125 }
1126
1127 log.set_fd(-1);
1128 log_done = true;
1129 }
1130
1131
1132 static bool skip_OnError = false;
1133 if (!skip_OnError && OnError && OnError[0]) {
1134 skip_OnError = true;
1135
1136 out.print_raw_cr("#");
1137 out.print_raw ("# -XX:OnError=\"");
1138 out.print_raw (OnError);
1139 out.print_raw_cr("\"");
1140
1141 char* cmd;
1142 const char* ptr = OnError;
1143 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1144 out.print_raw ("# Executing ");
1145 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1146 out.print_raw ("/bin/sh -c ");
1147 #elif defined(SOLARIS)
1148 out.print_raw ("/usr/bin/sh -c ");
1149 #endif
1150 out.print_raw ("\"");
1151 out.print_raw (cmd);
1152 out.print_raw_cr("\" ...");
1153
1154 if (os::fork_and_exec(cmd) < 0) {
1155 out.print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno);
1156 }
1157 }
1158
1159 // done with OnError
1160 OnError = NULL;
1161 }
1162
1163 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay
1164 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1165 skip_replay = true;
1166 ciEnv* env = ciEnv::current();
1167 if (env != NULL) {
1168 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer));
1169 if (fd != -1) {
1170 FILE* replay_data_file = os::open(fd, "w");
1171 if (replay_data_file != NULL) {
1172 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1173 env->dump_replay_data_unsafe(&replay_data_stream);
1174 out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1175 out.print_raw_cr(buffer);
1176 } else {
1177 out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1178 out.print_raw_cr(strerror(os::get_last_error()));
1179 }
1180 }
1181 }
1182 }
1183
1184 static bool skip_bug_url = !should_report_bug(first_error->_id);
1185 if (!skip_bug_url) {
1186 skip_bug_url = true;
1187
1188 out.print_raw_cr("#");
1189 print_bug_submit_message(&out, _thread);
1190 }
1191
1192 if (!UseOSErrorReporting) {
1193 // os::abort() will call abort hooks, try it first.
1194 static bool skip_os_abort = false;
1195 if (!skip_os_abort) {
1196 skip_os_abort = true;
1197 bool dump_core = should_report_bug(first_error->_id);
1198 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context);
1199 }
1200
1201 // if os::abort() doesn't abort, try os::die();
1202 os::die();
1203 }
1204 }
1205
1206 /*
1207 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1208 * ensures utilities such as jmap can observe the process is a consistent state.
1209 */
1210 class VM_ReportJavaOutOfMemory : public VM_Operation {
1211 private:
1212 VMError *_err;
1213 public:
1214 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; }
1215 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
1216 void doit();
1217 };
1218
1219 void VM_ReportJavaOutOfMemory::doit() {
1220 // Don't allocate large buffer on stack
1221 static char buffer[O_BUFLEN];
1222
1223 tty->print_cr("#");
1224 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message());
1225 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1226
1227 // make heap parsability
1228 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
1229
1230 char* cmd;
1231 const char* ptr = OnOutOfMemoryError;
1232 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1233 tty->print("# Executing ");
1234 #if defined(LINUX)
1235 tty->print ("/bin/sh -c ");
1236 #elif defined(SOLARIS)
1237 tty->print ("/usr/bin/sh -c ");
1238 #endif
1239 tty->print_cr("\"%s\"...", cmd);
1240
1241 if (os::fork_and_exec(cmd) < 0) {
1242 tty->print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno);
1243 }
1244 }
1245 }
1246
1247 void VMError::report_java_out_of_memory() {
1248 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1249 MutexLocker ml(Heap_lock);
1250 VM_ReportJavaOutOfMemory op(this);
1251 VMThread::execute(&op);
1252 }
1253 }