1 /*
2 * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include <fcntl.h>
26 #include "precompiled.hpp"
27 #include "code/codeCache.hpp"
28 #include "compiler/compileBroker.hpp"
29 #include "compiler/disassembler.hpp"
30 #include "gc/shared/collectedHeap.hpp"
31 #include "logging/logConfiguration.hpp"
32 #include "prims/whitebox.hpp"
33 #include "runtime/arguments.hpp"
34 #include "runtime/atomic.inline.hpp"
35 #include "runtime/frame.inline.hpp"
36 #include "runtime/init.hpp"
37 #include "runtime/os.hpp"
38 #include "runtime/thread.inline.hpp"
39 #include "runtime/vmThread.hpp"
40 #include "runtime/vm_operations.hpp"
41 #include "services/memTracker.hpp"
42 #include "utilities/debug.hpp"
43 #include "utilities/decoder.hpp"
44 #include "utilities/defaultStream.hpp"
45 #include "utilities/errorReporter.hpp"
46 #include "utilities/events.hpp"
47 #include "utilities/vmError.hpp"
48
49 // List of environment variables that should be reported in error log file.
50 const char *env_list[] = {
51 // All platforms
52 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
53 "JAVA_COMPILER", "PATH", "USERNAME",
54
55 // Env variables that are defined on Solaris/Linux/BSD
56 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
57 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
58
59 // defined on Linux
60 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
61
62 // defined on Darwin
63 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
64 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
65 "DYLD_INSERT_LIBRARIES",
66
67 // defined on Windows
68 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
69
70 (const char *)0
71 };
72
73 // A simple parser for -XX:OnError, usage:
74 // ptr = OnError;
75 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
76 // ... ...
77 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
78 if (ptr == NULL || *ptr == NULL) return NULL;
79
80 const char* cmd = *ptr;
81
82 // skip leading blanks or ';'
83 while (*cmd == ' ' || *cmd == ';') cmd++;
84
85 if (*cmd == '\0') return NULL;
86
87 const char * cmdend = cmd;
88 while (*cmdend != '\0' && *cmdend != ';') cmdend++;
89
90 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
91
92 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
93 return buf;
94 }
95
96 static void print_bug_submit_message(outputStream *out, Thread *thread) {
97 if (out == NULL) return;
98 out->print_raw_cr("# If you would like to submit a bug report, please visit:");
99 out->print_raw ("# ");
100 out->print_raw_cr(Arguments::java_vendor_url_bug());
101 // If the crash is in native code, encourage user to submit a bug to the
102 // provider of that code.
103 if (thread && thread->is_Java_thread() &&
104 !thread->is_hidden_from_external_view()) {
105 JavaThread* jt = (JavaThread*)thread;
106 if (jt->thread_state() == _thread_in_native) {
107 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
108 }
109 }
110 out->print_raw_cr("#");
111 }
112
113 bool VMError::coredump_status;
114 char VMError::coredump_message[O_BUFLEN];
115
116 void VMError::record_coredump_status(const char* message, bool status) {
117 coredump_status = status;
118 strncpy(coredump_message, message, sizeof(coredump_message));
119 coredump_message[sizeof(coredump_message)-1] = 0;
120 }
121
122 // Return a string to describe the error
123 char* VMError::error_string(char* buf, int buflen) {
124 char signame_buf[64];
125 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
126
127 if (signame) {
128 jio_snprintf(buf, buflen,
129 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT,
130 signame, _id, _pc,
131 os::current_process_id(), os::current_thread_id());
132 } else if (_filename != NULL && _lineno > 0) {
133 // skip directory names
134 char separator = os::file_separator()[0];
135 const char *p = strrchr(_filename, separator);
136 int n = jio_snprintf(buf, buflen,
137 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT,
138 p ? p + 1 : _filename, _lineno,
139 os::current_process_id(), os::current_thread_id());
140 if (n >= 0 && n < buflen && _message) {
141 if (strlen(_detail_msg) > 0) {
142 jio_snprintf(buf + n, buflen - n, "%s%s: %s",
143 os::line_separator(), _message, _detail_msg);
144 } else {
145 jio_snprintf(buf + n, buflen - n, "%sError: %s",
146 os::line_separator(), _message);
147 }
148 }
149 } else {
150 jio_snprintf(buf, buflen,
151 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT,
152 _id, os::current_process_id(), os::current_thread_id());
153 }
154
155 return buf;
156 }
157
158 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
159 char* buf, int buflen, bool verbose) {
160 #ifdef ZERO
161 if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
162 // StackFrameStream uses the frame anchor, which may not have
163 // been set up. This can be done at any time in Zero, however,
164 // so if it hasn't been set up then we just set it up now and
165 // clear it again when we're done.
166 bool has_last_Java_frame = jt->has_last_Java_frame();
167 if (!has_last_Java_frame)
168 jt->set_last_Java_frame();
169 st->print("Java frames:");
170
171 // If the top frame is a Shark frame and the frame anchor isn't
172 // set up then it's possible that the information in the frame
173 // is garbage: it could be from a previous decache, or it could
174 // simply have never been written. So we print a warning...
175 StackFrameStream sfs(jt);
176 if (!has_last_Java_frame && !sfs.is_done()) {
177 if (sfs.current()->zeroframe()->is_shark_frame()) {
178 st->print(" (TOP FRAME MAY BE JUNK)");
179 }
180 }
181 st->cr();
182
183 // Print the frames
184 for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
185 sfs.current()->zero_print_on_error(i, st, buf, buflen);
186 st->cr();
187 }
188
189 // Reset the frame anchor if necessary
190 if (!has_last_Java_frame)
191 jt->reset_last_Java_frame();
192 }
193 #else
194 if (jt->has_last_Java_frame()) {
195 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
196 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
197 sfs.current()->print_on_error(st, buf, buflen, verbose);
198 st->cr();
199 }
200 }
201 #endif // ZERO
202 }
203
204 static void print_oom_reasons(outputStream* st) {
205 st->print_cr("# Possible reasons:");
206 st->print_cr("# The system is out of physical RAM or swap space");
207 st->print_cr("# In 32 bit mode, the process size limit was hit");
208 st->print_cr("# Possible solutions:");
209 st->print_cr("# Reduce memory load on the system");
210 st->print_cr("# Increase physical memory or swap space");
211 st->print_cr("# Check if swap backing store is full");
212 st->print_cr("# Use 64 bit Java on a 64 bit OS");
213 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)");
214 st->print_cr("# Decrease number of Java threads");
215 st->print_cr("# Decrease Java thread stack sizes (-Xss)");
216 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize=");
217 st->print_cr("# This output file may be truncated or incomplete.");
218 }
219
220 static const char* gc_mode() {
221 if (UseG1GC) return "g1 gc";
222 if (UseParallelGC) return "parallel gc";
223 if (UseConcMarkSweepGC) return "concurrent mark sweep gc";
224 if (UseSerialGC) return "serial gc";
225 return "ERROR in GC mode";
226 }
227
228 static void report_vm_version(outputStream* st, char* buf, int buflen) {
229 // VM version
230 st->print_cr("#");
231 JDK_Version::current().to_string(buf, buflen);
232 const char* runtime_name = JDK_Version::runtime_name() != NULL ?
233 JDK_Version::runtime_name() : "";
234 const char* runtime_version = JDK_Version::runtime_version() != NULL ?
235 JDK_Version::runtime_version() : "";
236 const char* jdk_debug_level = Abstract_VM_Version::printable_jdk_debug_level() != NULL ?
237 Abstract_VM_Version::printable_jdk_debug_level() : "";
238
239 st->print_cr("# JRE version: %s (%s) (%sbuild %s)", runtime_name, buf,
240 jdk_debug_level, runtime_version);
241
242 // This is the long version with some default settings added
243 st->print_cr("# Java VM: %s (%s%s, %s%s%s%s%s, %s, %s)",
244 Abstract_VM_Version::vm_name(),
245 jdk_debug_level,
246 Abstract_VM_Version::vm_release(),
247 Abstract_VM_Version::vm_info_string(),
248 TieredCompilation ? ", tiered" : "",
249 #if INCLUDE_JVMCI
250 EnableJVMCI ? ", jvmci" : "",
251 UseJVMCICompiler ? ", jvmci compiler" : "",
252 #else
253 "", "",
254 #endif
255 UseCompressedOops ? ", compressed oops" : "",
256 gc_mode(),
257 Abstract_VM_Version::vm_platform_string()
258 );
259 }
260
261 // This is the main function to report a fatal error. Only one thread can
262 // call this function, so we don't need to worry about MT-safety. But it's
263 // possible that the error handler itself may crash or die on an internal
264 // error, for example, when the stack/heap is badly damaged. We must be
265 // able to handle recursive errors that happen inside error handler.
266 //
267 // Error reporting is done in several steps. If a crash or internal error
268 // occurred when reporting an error, the nested signal/exception handler
269 // can skip steps that are already (or partially) done. Error reporting will
270 // continue from the next step. This allows us to retrieve and print
271 // information that may be unsafe to get after a fatal error. If it happens,
272 // you may find nested report_and_die() frames when you look at the stack
273 // in a debugger.
274 //
275 // In general, a hang in error handler is much worse than a crash or internal
276 // error, as it's harder to recover from a hang. Deadlock can happen if we
277 // try to grab a lock that is already owned by current thread, or if the
278 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
279 // error handler and all the functions it called should avoid grabbing any
280 // lock. An important thing to notice is that memory allocation needs a lock.
281 //
282 // We should avoid using large stack allocated buffers. Many errors happen
283 // when stack space is already low. Making things even worse is that there
284 // could be nested report_and_die() calls on stack (see above). Only one
285 // thread can report error, so large buffers are statically allocated in data
286 // segment.
287
288 int VMError::_current_step;
289 const char* VMError::_current_step_info;
290
291 void VMError::report(outputStream* st, bool _verbose) {
292
293 # define BEGIN if (_current_step == 0) { _current_step = __LINE__;
294 # define STEP(s) } if (_current_step < __LINE__) { _current_step = __LINE__; _current_step_info = s;
295 # define END }
296
297 // don't allocate large buffer on stack
298 static char buf[O_BUFLEN];
299
300 BEGIN
301
302 STEP("printing fatal error message")
303
304 st->print_cr("#");
305 if (should_report_bug(_id)) {
306 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
307 } else {
308 st->print_cr("# There is insufficient memory for the Java "
309 "Runtime Environment to continue.");
310 }
311
312 #ifndef PRODUCT
313 // Error handler self tests
314
315 // test secondary error handling. Test it twice, to test that resetting
316 // error handler after a secondary crash works.
317 STEP("test secondary crash 1")
318 if (_verbose && TestCrashInErrorHandler != 0) {
319 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
320 TestCrashInErrorHandler);
321 controlled_crash(TestCrashInErrorHandler);
322 }
323
324 STEP("test secondary crash 2")
325 if (_verbose && TestCrashInErrorHandler != 0) {
326 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
327 TestCrashInErrorHandler);
328 controlled_crash(TestCrashInErrorHandler);
329 }
330
331 STEP("test safefetch in error handler")
332 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice
333 // to test that resetting the signal handler works correctly.
334 if (_verbose && TestSafeFetchInErrorHandler) {
335 st->print_cr("Will test SafeFetch...");
336 if (CanUseSafeFetch32()) {
337 int* const invalid_pointer = (int*) get_segfault_address();
338 const int x = 0x76543210;
339 int i1 = SafeFetch32(invalid_pointer, x);
340 int i2 = SafeFetch32(invalid_pointer, x);
341 if (i1 == x && i2 == x) {
342 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern
343 } else {
344 st->print_cr("??");
345 }
346 } else {
347 st->print_cr("not possible; skipped.");
348 }
349 }
350 #endif // PRODUCT
351
352 STEP("printing type of error")
353
354 switch(_id) {
355 case OOM_MALLOC_ERROR:
356 case OOM_MMAP_ERROR:
357 if (_size) {
358 st->print("# Native memory allocation ");
359 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
360 "(mmap) failed to map ");
361 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
362 st->print("%s", buf);
363 st->print(" bytes");
364 if (strlen(_detail_msg) > 0) {
365 st->print(" for ");
366 st->print("%s", _detail_msg);
367 }
368 st->cr();
369 } else {
370 if (strlen(_detail_msg) > 0) {
371 st->print("# ");
372 st->print_cr("%s", _detail_msg);
373 }
374 }
375 // In error file give some solutions
376 if (_verbose) {
377 print_oom_reasons(st);
378 } else {
379 return; // that's enough for the screen
380 }
381 break;
382 case INTERNAL_ERROR:
383 default:
384 break;
385 }
386
387 STEP("printing exception/signal name")
388
389 st->print_cr("#");
390 st->print("# ");
391 // Is it an OS exception/signal?
392 if (os::exception_name(_id, buf, sizeof(buf))) {
393 st->print("%s", buf);
394 st->print(" (0x%x)", _id); // signal number
395 st->print(" at pc=" PTR_FORMAT, p2i(_pc));
396 } else {
397 if (should_report_bug(_id)) {
398 st->print("Internal Error");
399 } else {
400 st->print("Out of Memory Error");
401 }
402 if (_filename != NULL && _lineno > 0) {
403 #ifdef PRODUCT
404 // In product mode chop off pathname?
405 char separator = os::file_separator()[0];
406 const char *p = strrchr(_filename, separator);
407 const char *file = p ? p+1 : _filename;
408 #else
409 const char *file = _filename;
410 #endif
411 st->print(" (%s:%d)", file, _lineno);
412 } else {
413 st->print(" (0x%x)", _id);
414 }
415 }
416
417 STEP("printing current thread and pid")
418
419 // process id, thread id
420 st->print(", pid=%d", os::current_process_id());
421 st->print(", tid=" UINTX_FORMAT, os::current_thread_id());
422 st->cr();
423
424 STEP("printing error message")
425
426 if (should_report_bug(_id)) { // already printed the message.
427 // error message
428 if (strlen(_detail_msg) > 0) {
429 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg);
430 } else if (_message) {
431 st->print_cr("# Error: %s", _message);
432 }
433 }
434
435 STEP("printing Java version string")
436
437 report_vm_version(st, buf, sizeof(buf));
438
439 STEP("printing problematic frame")
440
441 // Print current frame if we have a context (i.e. it's a crash)
442 if (_context) {
443 st->print_cr("# Problematic frame:");
444 st->print("# ");
445 frame fr = os::fetch_frame_from_context(_context);
446 fr.print_on_error(st, buf, sizeof(buf));
447 st->cr();
448 st->print_cr("#");
449 }
450
451 STEP("printing core file information")
452 st->print("# ");
453 if (CreateCoredumpOnCrash) {
454 if (coredump_status) {
455 st->print("Core dump will be written. Default location: %s", coredump_message);
456 } else {
457 st->print("No core dump will be written. %s", coredump_message);
458 }
459 } else {
460 st->print("CreateCoredumpOnCrash turned off, no core file dumped");
461 }
462 st->cr();
463 st->print_cr("#");
464
465 STEP("printing bug submit message")
466
467 if (should_report_bug(_id) && _verbose) {
468 print_bug_submit_message(st, _thread);
469 }
470
471 STEP("printing summary")
472
473 if (_verbose) {
474 st->cr();
475 st->print_cr("--------------- S U M M A R Y ------------");
476 st->cr();
477 }
478
479 STEP("printing VM option summary")
480
481 if (_verbose) {
482 // VM options
483 Arguments::print_summary_on(st);
484 st->cr();
485 }
486
487 STEP("printing summary machine and OS info")
488
489 if (_verbose) {
490 os::print_summary_info(st, buf, sizeof(buf));
491 }
492
493
494 STEP("printing date and time")
495
496 if (_verbose) {
497 os::print_date_and_time(st, buf, sizeof(buf));
498 }
499
500 STEP("printing thread")
501
502 if (_verbose) {
503 st->cr();
504 st->print_cr("--------------- T H R E A D ---------------");
505 st->cr();
506 }
507
508 STEP("printing current thread")
509
510 // current thread
511 if (_verbose) {
512 if (_thread) {
513 st->print("Current thread (" PTR_FORMAT "): ", p2i(_thread));
514 _thread->print_on_error(st, buf, sizeof(buf));
515 st->cr();
516 } else {
517 st->print_cr("Current thread is native thread");
518 }
519 st->cr();
520 }
521
522 STEP("printing current compile task")
523
524 if (_verbose && _thread && _thread->is_Compiler_thread()) {
525 CompilerThread* t = (CompilerThread*)_thread;
526 if (t->task()) {
527 st->cr();
528 st->print_cr("Current CompileTask:");
529 t->task()->print_line_on_error(st, buf, sizeof(buf));
530 st->cr();
531 }
532 }
533
534
535 STEP("printing stack bounds")
536
537 if (_verbose) {
538 st->print("Stack: ");
539
540 address stack_top;
541 size_t stack_size;
542
543 if (_thread) {
544 stack_top = _thread->stack_base();
545 stack_size = _thread->stack_size();
546 } else {
547 stack_top = os::current_stack_base();
548 stack_size = os::current_stack_size();
549 }
550
551 address stack_bottom = stack_top - stack_size;
552 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", p2i(stack_bottom), p2i(stack_top));
553
554 frame fr = _context ? os::fetch_frame_from_context(_context)
555 : os::current_frame();
556
557 if (fr.sp()) {
558 st->print(", sp=" PTR_FORMAT, p2i(fr.sp()));
559 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
560 st->print(", free space=" SIZE_FORMAT "k", free_stack_size);
561 }
562
563 st->cr();
564 }
565
566 STEP("printing native stack")
567
568 if (_verbose) {
569 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
570 // We have printed the native stack in platform-specific code
571 // Windows/x64 needs special handling.
572 } else {
573 frame fr = _context ? os::fetch_frame_from_context(_context)
574 : os::current_frame();
575
576 print_native_stack(st, fr, _thread, buf, sizeof(buf));
577 }
578 }
579
580 STEP("printing Java stack")
581
582 if (_verbose && _thread && _thread->is_Java_thread()) {
583 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
584 }
585
586 STEP("printing target Java thread stack")
587
588 // printing Java thread stack trace if it is involved in GC crash
589 if (_verbose && _thread && (_thread->is_Named_thread())) {
590 JavaThread* jt = ((NamedThread *)_thread)->processed_thread();
591 if (jt != NULL) {
592 st->print_cr("JavaThread " PTR_FORMAT " (nid = %d) was being processed", p2i(jt), jt->osthread()->thread_id());
593 print_stack_trace(st, jt, buf, sizeof(buf), true);
594 }
595 }
596
597 STEP("printing siginfo")
598
599 // signal no, signal code, address that caused the fault
600 if (_verbose && _siginfo) {
601 st->cr();
602 os::print_siginfo(st, _siginfo);
603 st->cr();
604 }
605
606 STEP("CDS archive access warning")
607
608 // Print an explicit hint if we crashed on access to the CDS archive.
609 if (_verbose && _siginfo) {
610 check_failing_cds_access(st, _siginfo);
611 st->cr();
612 }
613
614 STEP("printing register info")
615
616 // decode register contents if possible
617 if (_verbose && _context && Universe::is_fully_initialized()) {
618 os::print_register_info(st, _context);
619 st->cr();
620 }
621
622 STEP("printing registers, top of stack, instructions near pc")
623
624 // registers, top of stack, instructions near pc
625 if (_verbose && _context) {
626 os::print_context(st, _context);
627 st->cr();
628 }
629
630 STEP("printing code blob if possible")
631
632 if (_verbose && _context) {
633 CodeBlob* cb = CodeCache::find_blob(_pc);
634 if (cb != NULL) {
635 if (Interpreter::contains(_pc)) {
636 // The interpreter CodeBlob is very large so try to print the codelet instead.
637 InterpreterCodelet* codelet = Interpreter::codelet_containing(_pc);
638 if (codelet != NULL) {
639 codelet->print_on(st);
640 Disassembler::decode(codelet->code_begin(), codelet->code_end(), st);
641 }
642 } else {
643 StubCodeDesc* desc = StubCodeDesc::desc_for(_pc);
644 if (desc != NULL) {
645 desc->print_on(st);
646 Disassembler::decode(desc->begin(), desc->end(), st);
647 } else {
648 Disassembler::decode(cb, st);
649 st->cr();
650 }
651 }
652 }
653 }
654
655 STEP("printing VM operation")
656
657 if (_verbose && _thread && _thread->is_VM_thread()) {
658 VMThread* t = (VMThread*)_thread;
659 VM_Operation* op = t->vm_operation();
660 if (op) {
661 op->print_on_error(st);
662 st->cr();
663 st->cr();
664 }
665 }
666
667 STEP("printing process")
668
669 if (_verbose) {
670 st->cr();
671 st->print_cr("--------------- P R O C E S S ---------------");
672 st->cr();
673 }
674
675 STEP("printing all threads")
676
677 // all threads
678 if (_verbose && _thread) {
679 Threads::print_on_error(st, _thread, buf, sizeof(buf));
680 st->cr();
681 }
682
683 STEP("printing VM state")
684
685 if (_verbose) {
686 // Safepoint state
687 st->print("VM state:");
688
689 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
690 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
691 else st->print("not at safepoint");
692
693 // Also see if error occurred during initialization or shutdown
694 if (!Universe::is_fully_initialized()) {
695 st->print(" (not fully initialized)");
696 } else if (VM_Exit::vm_exited()) {
697 st->print(" (shutting down)");
698 } else {
699 st->print(" (normal execution)");
700 }
701 st->cr();
702 st->cr();
703 }
704
705 STEP("printing owned locks on error")
706
707 // mutexes/monitors that currently have an owner
708 if (_verbose) {
709 print_owned_locks_on_error(st);
710 st->cr();
711 }
712
713 STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
714
715 if (_verbose && Exceptions::has_exception_counts()) {
716 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
717 Exceptions::print_exception_counts_on_error(st);
718 st->cr();
719 }
720
721 STEP("printing compressed oops mode")
722
723 if (_verbose && UseCompressedOops) {
724 Universe::print_compressed_oops_mode(st);
725 if (UseCompressedClassPointers) {
726 Metaspace::print_compressed_class_space(st);
727 }
728 st->cr();
729 }
730
731 STEP("printing heap information")
732
733 if (_verbose && Universe::is_fully_initialized()) {
734 Universe::heap()->print_on_error(st);
735 st->cr();
736 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page()));
737 st->cr();
738 }
739
740 STEP("printing code cache information")
741
742 if (_verbose && Universe::is_fully_initialized()) {
743 // print code cache information before vm abort
744 CodeCache::print_summary(st);
745 st->cr();
746 }
747
748 STEP("printing ring buffers")
749
750 if (_verbose) {
751 Events::print_all(st);
752 st->cr();
753 }
754
755 STEP("printing dynamic libraries")
756
757 if (_verbose) {
758 // dynamic libraries, or memory map
759 os::print_dll_info(st);
760 st->cr();
761 }
762
763 STEP("printing VM options")
764
765 if (_verbose) {
766 // VM options
767 Arguments::print_on(st);
768 st->cr();
769 }
770
771 STEP("printing warning if internal testing API used")
772
773 if (WhiteBox::used()) {
774 st->print_cr("Unsupported internal testing APIs have been used.");
775 st->cr();
776 }
777
778 STEP("printing log configuration")
779 if (_verbose){
780 st->print_cr("Logging:");
781 LogConfiguration::describe_current_configuration(st);
782 st->cr();
783 }
784
785 STEP("printing all environment variables")
786
787 if (_verbose) {
788 os::print_environment_variables(st, env_list);
789 st->cr();
790 }
791
792 STEP("printing signal handlers")
793
794 if (_verbose) {
795 os::print_signal_handlers(st, buf, sizeof(buf));
796 st->cr();
797 }
798
799 STEP("Native Memory Tracking")
800 if (_verbose) {
801 MemTracker::error_report(st);
802 }
803
804 STEP("printing system")
805
806 if (_verbose) {
807 st->cr();
808 st->print_cr("--------------- S Y S T E M ---------------");
809 st->cr();
810 }
811
812 STEP("printing OS information")
813
814 if (_verbose) {
815 os::print_os_info(st);
816 st->cr();
817 }
818
819 STEP("printing CPU info")
820 if (_verbose) {
821 os::print_cpu_info(st, buf, sizeof(buf));
822 st->cr();
823 }
824
825 STEP("printing memory info")
826
827 if (_verbose) {
828 os::print_memory_info(st);
829 st->cr();
830 }
831
832 STEP("printing internal vm info")
833
834 if (_verbose) {
835 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
836 st->cr();
837 }
838
839 // print a defined marker to show that error handling finished correctly.
840 STEP("printing end marker")
841
842 if (_verbose) {
843 st->print_cr("END.");
844 }
845
846 END
847
848 # undef BEGIN
849 # undef STEP
850 # undef END
851 }
852
853 // Report for the vm_info_cmd. This prints out the information above omitting
854 // crash and thread specific information. If output is added above, it should be added
855 // here also, if it is safe to call during a running process.
856 void VMError::print_vm_info(outputStream* st) {
857
858 char buf[O_BUFLEN];
859 report_vm_version(st, buf, sizeof(buf));
860
861 // STEP("printing summary")
862
863 st->cr();
864 st->print_cr("--------------- S U M M A R Y ------------");
865 st->cr();
866
867 // STEP("printing VM option summary")
868
869 // VM options
870 Arguments::print_summary_on(st);
871 st->cr();
872
873 // STEP("printing summary machine and OS info")
874
875 os::print_summary_info(st, buf, sizeof(buf));
876
877 // STEP("printing date and time")
878
879 os::print_date_and_time(st, buf, sizeof(buf));
880
881 // Skip: STEP("printing thread")
882
883 // STEP("printing process")
884
885 st->cr();
886 st->print_cr("--------------- P R O C E S S ---------------");
887 st->cr();
888
889 // STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
890
891 if (Exceptions::has_exception_counts()) {
892 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
893 Exceptions::print_exception_counts_on_error(st);
894 st->cr();
895 }
896
897 // STEP("printing compressed oops mode")
898
899 if (UseCompressedOops) {
900 Universe::print_compressed_oops_mode(st);
901 if (UseCompressedClassPointers) {
902 Metaspace::print_compressed_class_space(st);
903 }
904 st->cr();
905 }
906
907 // STEP("printing heap information")
908
909 if (Universe::is_fully_initialized()) {
910 Universe::heap()->print_on_error(st);
911 st->cr();
912 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page()));
913 st->cr();
914 }
915
916 // STEP("printing code cache information")
917
918 if (Universe::is_fully_initialized()) {
919 // print code cache information before vm abort
920 CodeCache::print_summary(st);
921 st->cr();
922 }
923
924 // STEP("printing ring buffers")
925
926 Events::print_all(st);
927 st->cr();
928
929 // STEP("printing dynamic libraries")
930
931 // dynamic libraries, or memory map
932 os::print_dll_info(st);
933 st->cr();
934
935 // STEP("printing VM options")
936
937 // VM options
938 Arguments::print_on(st);
939 st->cr();
940
941 // STEP("printing warning if internal testing API used")
942
943 if (WhiteBox::used()) {
944 st->print_cr("Unsupported internal testing APIs have been used.");
945 st->cr();
946 }
947
948 // STEP("printing log configuration")
949 st->print_cr("Logging:");
950 LogConfiguration::describe(st);
951 st->cr();
952
953 // STEP("printing all environment variables")
954
955 os::print_environment_variables(st, env_list);
956 st->cr();
957
958 // STEP("printing signal handlers")
959
960 os::print_signal_handlers(st, buf, sizeof(buf));
961 st->cr();
962
963 // STEP("Native Memory Tracking")
964
965 MemTracker::error_report(st);
966
967 // STEP("printing system")
968
969 st->cr();
970 st->print_cr("--------------- S Y S T E M ---------------");
971 st->cr();
972
973 // STEP("printing OS information")
974
975 os::print_os_info(st);
976 st->cr();
977
978 // STEP("printing CPU info")
979
980 os::print_cpu_info(st, buf, sizeof(buf));
981 st->cr();
982
983 // STEP("printing memory info")
984
985 os::print_memory_info(st);
986 st->cr();
987
988 // STEP("printing internal vm info")
989
990 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
991 st->cr();
992
993 // print a defined marker to show that error handling finished correctly.
994 // STEP("printing end marker")
995
996 st->print_cr("END.");
997 }
998
999 volatile intptr_t VMError::first_error_tid = -1;
1000
1001 // An error could happen before tty is initialized or after it has been
1002 // destroyed.
1003 // Please note: to prevent large stack allocations, the log- and
1004 // output-stream use a global scratch buffer for format printing.
1005 // (see VmError::report_and_die(). Access to those streams is synchronized
1006 // in VmError::report_and_die() - there is only one reporting thread at
1007 // any given time.
1008 fdStream VMError::out(defaultStream::output_fd());
1009 fdStream VMError::log; // error log used by VMError::report_and_die()
1010
1011 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
1012 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
1013 int fd = -1;
1014 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
1015 // the O_EXCL flag will cause the open to fail if the file exists
1016 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666);
1017 }
1018 return fd;
1019 }
1020
1021 /**
1022 * Construct file name for a log file and return it's file descriptor.
1023 * Name and location depends on pattern, default_pattern params and access
1024 * permissions.
1025 */
1026 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) {
1027 int fd = -1;
1028
1029 // If possible, use specified pattern to construct log file name
1030 if (pattern != NULL) {
1031 fd = expand_and_open(pattern, buf, buflen, 0);
1032 }
1033
1034 // Either user didn't specify, or the user's location failed,
1035 // so use the default name in the current directory
1036 if (fd == -1) {
1037 const char* cwd = os::get_current_directory(buf, buflen);
1038 if (cwd != NULL) {
1039 size_t pos = strlen(cwd);
1040 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
1041 pos += fsep_len;
1042 if (fsep_len > 0) {
1043 fd = expand_and_open(default_pattern, buf, buflen, pos);
1044 }
1045 }
1046 }
1047
1048 // try temp directory if it exists.
1049 if (fd == -1) {
1050 const char* tmpdir = os::get_temp_directory();
1051 if (tmpdir != NULL && strlen(tmpdir) > 0) {
1052 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
1053 if (pos > 0) {
1054 fd = expand_and_open(default_pattern, buf, buflen, pos);
1055 }
1056 }
1057 }
1058
1059 return fd;
1060 }
1061
1062 int VMError::_id;
1063 const char* VMError::_message;
1064 char VMError::_detail_msg[1024];
1065 Thread* VMError::_thread;
1066 address VMError::_pc;
1067 void* VMError::_siginfo;
1068 void* VMError::_context;
1069 const char* VMError::_filename;
1070 int VMError::_lineno;
1071 size_t VMError::_size;
1072
1073 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo,
1074 void* context, const char* detail_fmt, ...)
1075 {
1076 va_list detail_args;
1077 va_start(detail_args, detail_fmt);
1078 report_and_die(sig, NULL, detail_fmt, detail_args, thread, pc, siginfo, context, NULL, 0, 0);
1079 va_end(detail_args);
1080 }
1081
1082 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context)
1083 {
1084 report_and_die(thread, sig, pc, siginfo, context, "%s", "");
1085 }
1086
1087 void VMError::report_and_die(const char* message, const char* detail_fmt, ...)
1088 {
1089 va_list detail_args;
1090 va_start(detail_args, detail_fmt);
1091 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, NULL, NULL, NULL, NULL, NULL, 0, 0);
1092 va_end(detail_args);
1093 }
1094
1095 void VMError::report_and_die(const char* message)
1096 {
1097 report_and_die(message, "%s", "");
1098 }
1099
1100 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, const char* message,
1101 const char* detail_fmt, va_list detail_args)
1102 {
1103 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, 0);
1104 }
1105
1106 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, size_t size,
1107 VMErrorType vm_err_type, const char* detail_fmt, va_list detail_args) {
1108 report_and_die(vm_err_type, NULL, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, size);
1109 }
1110
1111 void VMError::report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args,
1112 Thread* thread, address pc, void* siginfo, void* context, const char* filename,
1113 int lineno, size_t size)
1114 {
1115 // Don't allocate large buffer on stack
1116 static char buffer[O_BUFLEN];
1117 out.set_scratch_buffer(buffer, sizeof(buffer));
1118 log.set_scratch_buffer(buffer, sizeof(buffer));
1119
1120 // How many errors occurred in error handler when reporting first_error.
1121 static int recursive_error_count;
1122
1123 // We will first print a brief message to standard out (verbose = false),
1124 // then save detailed information in log file (verbose = true).
1125 static bool out_done = false; // done printing to standard out
1126 static bool log_done = false; // done saving error log
1127 static bool transmit_report_done = false; // done error reporting
1128
1129 if (SuppressFatalErrorMessage) {
1130 os::abort(CreateCoredumpOnCrash);
1131 }
1132 intptr_t mytid = os::current_thread_id();
1133 if (first_error_tid == -1 &&
1134 Atomic::cmpxchg_ptr(mytid, &first_error_tid, -1) == -1) {
1135
1136 // Initialize time stamps to use the same base.
1137 out.time_stamp().update_to(1);
1138 log.time_stamp().update_to(1);
1139
1140 _id = id;
1141 _message = message;
1142 _thread = thread;
1143 _pc = pc;
1144 _siginfo = siginfo;
1145 _context = context;
1146 _filename = filename;
1147 _lineno = lineno;
1148 _size = size;
1149 jio_vsnprintf(_detail_msg, sizeof(_detail_msg), detail_fmt, detail_args);
1150
1151 // first time
1152 set_error_reported();
1153
1154 if (ShowMessageBoxOnError || PauseAtExit) {
1155 show_message_box(buffer, sizeof(buffer));
1156
1157 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
1158 // WatcherThread can kill JVM if the error handler hangs.
1159 ShowMessageBoxOnError = false;
1160 }
1161
1162 os::check_dump_limit(buffer, sizeof(buffer));
1163
1164 // reset signal handlers or exception filter; make sure recursive crashes
1165 // are handled properly.
1166 reset_signal_handlers();
1167
1168 } else {
1169 // If UseOsErrorReporting we call this for each level of the call stack
1170 // while searching for the exception handler. Only the first level needs
1171 // to be reported.
1172 if (UseOSErrorReporting && log_done) return;
1173
1174 // This is not the first error, see if it happened in a different thread
1175 // or in the same thread during error reporting.
1176 if (first_error_tid != mytid) {
1177 char msgbuf[64];
1178 jio_snprintf(msgbuf, sizeof(msgbuf),
1179 "[thread " INTX_FORMAT " also had an error]",
1180 mytid);
1181 out.print_raw_cr(msgbuf);
1182
1183 // error reporting is not MT-safe, block current thread
1184 os::infinite_sleep();
1185
1186 } else {
1187 if (recursive_error_count++ > 30) {
1188 out.print_raw_cr("[Too many errors, abort]");
1189 os::die();
1190 }
1191
1192 jio_snprintf(buffer, sizeof(buffer),
1193 "[error occurred during error reporting (%s), id 0x%x]",
1194 _current_step_info, _id);
1195 if (log.is_open()) {
1196 log.cr();
1197 log.print_raw_cr(buffer);
1198 log.cr();
1199 } else {
1200 out.cr();
1201 out.print_raw_cr(buffer);
1202 out.cr();
1203 }
1204 }
1205 }
1206
1207 // print to screen
1208 if (!out_done) {
1209 report(&out, false);
1210
1211 out_done = true;
1212
1213 _current_step = 0;
1214 _current_step_info = "";
1215 }
1216
1217 // print to error log file
1218 if (!log_done) {
1219 // see if log file is already open
1220 if (!log.is_open()) {
1221 // open log file
1222 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer));
1223 if (fd != -1) {
1224 out.print_raw("# An error report file with more information is saved as:\n# ");
1225 out.print_raw_cr(buffer);
1226
1227 log.set_fd(fd);
1228 } else {
1229 out.print_raw_cr("# Can not save log file, dump to screen..");
1230 log.set_fd(defaultStream::output_fd());
1231 /* Error reporting currently needs dumpfile.
1232 * Maybe implement direct streaming in the future.*/
1233 transmit_report_done = true;
1234 }
1235 }
1236
1237 report(&log, true);
1238 _current_step = 0;
1239 _current_step_info = "";
1240
1241 // Run error reporting to determine whether or not to report the crash.
1242 if (!transmit_report_done && should_report_bug(_id)) {
1243 transmit_report_done = true;
1244 const int fd2 = ::dup(log.fd());
1245 FILE* const hs_err = ::fdopen(fd2, "r");
1246 if (NULL != hs_err) {
1247 ErrorReporter er;
1248 er.call(hs_err, buffer, O_BUFLEN);
1249 }
1250 ::fclose(hs_err);
1251 }
1252
1253 if (log.fd() != defaultStream::output_fd()) {
1254 close(log.fd());
1255 }
1256
1257 log.set_fd(-1);
1258 log_done = true;
1259 }
1260
1261 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay
1262 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1263 skip_replay = true;
1264 ciEnv* env = ciEnv::current();
1265 if (env != NULL) {
1266 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer));
1267 if (fd != -1) {
1268 FILE* replay_data_file = os::open(fd, "w");
1269 if (replay_data_file != NULL) {
1270 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1271 env->dump_replay_data_unsafe(&replay_data_stream);
1272 out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1273 out.print_raw_cr(buffer);
1274 } else {
1275 int e = errno;
1276 out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1277 out.print_raw_cr(os::strerror(e));
1278 }
1279 }
1280 }
1281 }
1282
1283 static bool skip_bug_url = !should_report_bug(_id);
1284 if (!skip_bug_url) {
1285 skip_bug_url = true;
1286
1287 out.print_raw_cr("#");
1288 print_bug_submit_message(&out, _thread);
1289 }
1290
1291 static bool skip_OnError = false;
1292 if (!skip_OnError && OnError && OnError[0]) {
1293 skip_OnError = true;
1294
1295 // Flush output and finish logs before running OnError commands.
1296 ostream_abort();
1297
1298 out.print_raw_cr("#");
1299 out.print_raw ("# -XX:OnError=\"");
1300 out.print_raw (OnError);
1301 out.print_raw_cr("\"");
1302
1303 char* cmd;
1304 const char* ptr = OnError;
1305 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1306 out.print_raw ("# Executing ");
1307 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1308 out.print_raw ("/bin/sh -c ");
1309 #elif defined(SOLARIS)
1310 out.print_raw ("/usr/bin/sh -c ");
1311 #endif
1312 out.print_raw ("\"");
1313 out.print_raw (cmd);
1314 out.print_raw_cr("\" ...");
1315
1316 if (os::fork_and_exec(cmd) < 0) {
1317 out.print_cr("os::fork_and_exec failed: %s (%s=%d)",
1318 os::strerror(errno), os::errno_name(errno), errno);
1319 }
1320 }
1321
1322 // done with OnError
1323 OnError = NULL;
1324 }
1325
1326 if (!UseOSErrorReporting) {
1327 // os::abort() will call abort hooks, try it first.
1328 static bool skip_os_abort = false;
1329 if (!skip_os_abort) {
1330 skip_os_abort = true;
1331 bool dump_core = should_report_bug(_id);
1332 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context);
1333 }
1334
1335 // if os::abort() doesn't abort, try os::die();
1336 os::die();
1337 }
1338 }
1339
1340 /*
1341 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1342 * ensures utilities such as jmap can observe the process is a consistent state.
1343 */
1344 class VM_ReportJavaOutOfMemory : public VM_Operation {
1345 private:
1346 const char* _message;
1347 public:
1348 VM_ReportJavaOutOfMemory(const char* message) { _message = message; }
1349 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
1350 void doit();
1351 };
1352
1353 void VM_ReportJavaOutOfMemory::doit() {
1354 // Don't allocate large buffer on stack
1355 static char buffer[O_BUFLEN];
1356
1357 tty->print_cr("#");
1358 tty->print_cr("# java.lang.OutOfMemoryError: %s", _message);
1359 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1360
1361 // make heap parsability
1362 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
1363
1364 char* cmd;
1365 const char* ptr = OnOutOfMemoryError;
1366 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1367 tty->print("# Executing ");
1368 #if defined(LINUX)
1369 tty->print ("/bin/sh -c ");
1370 #elif defined(SOLARIS)
1371 tty->print ("/usr/bin/sh -c ");
1372 #endif
1373 tty->print_cr("\"%s\"...", cmd);
1374
1375 if (os::fork_and_exec(cmd) < 0) {
1376 tty->print_cr("os::fork_and_exec failed: %s (%s=%d)",
1377 os::strerror(errno), os::errno_name(errno), errno);
1378 }
1379 }
1380 }
1381
1382 void VMError::report_java_out_of_memory(const char* message) {
1383 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1384 MutexLocker ml(Heap_lock);
1385 VM_ReportJavaOutOfMemory op(message);
1386 VMThread::execute(&op);
1387 }
1388 }
1389
1390 void VMError::show_message_box(char *buf, int buflen) {
1391 bool yes;
1392 do {
1393 error_string(buf, buflen);
1394 yes = os::start_debugging(buf,buflen);
1395 } while (yes);
1396 }