1 /*
2 * Copyright (c) 2003, 2018, 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 "precompiled.hpp"
26 #include "jvm.h"
27 #include "code/codeCache.hpp"
28 #include "compiler/compileBroker.hpp"
29 #include "compiler/disassembler.hpp"
30 #include "gc/shared/gcConfig.hpp"
31 #include "logging/logConfiguration.hpp"
32 #include "memory/resourceArea.hpp"
33 #include "prims/whitebox.hpp"
34 #include "runtime/arguments.hpp"
35 #include "runtime/atomic.hpp"
36 #include "runtime/frame.inline.hpp"
37 #include "runtime/init.hpp"
38 #include "runtime/os.hpp"
39 #include "runtime/thread.inline.hpp"
40 #include "runtime/threadSMR.hpp"
41 #include "runtime/vmThread.hpp"
42 #include "runtime/vm_operations.hpp"
43 #include "runtime/vm_version.hpp"
44 #include "services/memTracker.hpp"
45 #include "trace/traceMacros.hpp"
46 #include "utilities/debug.hpp"
47 #include "utilities/decoder.hpp"
48 #include "utilities/defaultStream.hpp"
49 #include "utilities/errorReporter.hpp"
50 #include "utilities/events.hpp"
51 #include "utilities/vmError.hpp"
52
53 #ifndef PRODUCT
54 #include <signal.h>
55 #endif // PRODUCT
56
57 bool VMError::_error_reported = false;
58
59 // call this when the VM is dying--it might loosen some asserts
60 bool VMError::is_error_reported() { return _error_reported; }
61
62 // returns an address which is guaranteed to generate a SIGSEGV on read,
63 // for test purposes, which is not NULL and contains bits in every word
64 void* VMError::get_segfault_address() {
65 return (void*)
66 #ifdef _LP64
67 0xABC0000000000ABCULL;
68 #else
69 0x00000ABC;
70 #endif
71 }
72
73 // List of environment variables that should be reported in error log file.
74 const char *env_list[] = {
75 // All platforms
76 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
77 "JAVA_COMPILER", "PATH", "USERNAME",
78
79 // Env variables that are defined on Solaris/Linux/BSD
80 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
81 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
82
83 // defined on Linux
84 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
85
86 // defined on Darwin
87 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
88 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
89 "DYLD_INSERT_LIBRARIES",
90
91 // defined on Windows
92 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
93
94 (const char *)0
95 };
96
97 // A simple parser for -XX:OnError, usage:
98 // ptr = OnError;
99 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
100 // ... ...
101 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
102 if (ptr == NULL || *ptr == NULL) return NULL;
103
104 const char* cmd = *ptr;
105
106 // skip leading blanks or ';'
107 while (*cmd == ' ' || *cmd == ';') cmd++;
108
109 if (*cmd == '\0') return NULL;
110
111 const char * cmdend = cmd;
112 while (*cmdend != '\0' && *cmdend != ';') cmdend++;
113
114 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
115
116 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
117 return buf;
118 }
119
120 static void print_bug_submit_message(outputStream *out, Thread *thread) {
121 if (out == NULL) return;
122 out->print_raw_cr("# If you would like to submit a bug report, please visit:");
123 out->print_raw ("# ");
124 out->print_raw_cr(Arguments::java_vendor_url_bug());
125 // If the crash is in native code, encourage user to submit a bug to the
126 // provider of that code.
127 if (thread && thread->is_Java_thread() &&
128 !thread->is_hidden_from_external_view()) {
129 JavaThread* jt = (JavaThread*)thread;
130 if (jt->thread_state() == _thread_in_native) {
131 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
132 }
133 }
134 out->print_raw_cr("#");
135 }
136
137 bool VMError::coredump_status;
138 char VMError::coredump_message[O_BUFLEN];
139
140 void VMError::record_coredump_status(const char* message, bool status) {
141 coredump_status = status;
142 strncpy(coredump_message, message, sizeof(coredump_message));
143 coredump_message[sizeof(coredump_message)-1] = 0;
144 }
145
146 // Return a string to describe the error
147 char* VMError::error_string(char* buf, int buflen) {
148 char signame_buf[64];
149 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
150
151 if (signame) {
152 jio_snprintf(buf, buflen,
153 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT,
154 signame, _id, _pc,
155 os::current_process_id(), os::current_thread_id());
156 } else if (_filename != NULL && _lineno > 0) {
157 // skip directory names
158 char separator = os::file_separator()[0];
159 const char *p = strrchr(_filename, separator);
160 int n = jio_snprintf(buf, buflen,
161 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT,
162 p ? p + 1 : _filename, _lineno,
163 os::current_process_id(), os::current_thread_id());
164 if (n >= 0 && n < buflen && _message) {
165 if (strlen(_detail_msg) > 0) {
166 jio_snprintf(buf + n, buflen - n, "%s%s: %s",
167 os::line_separator(), _message, _detail_msg);
168 } else {
169 jio_snprintf(buf + n, buflen - n, "%sError: %s",
170 os::line_separator(), _message);
171 }
172 }
173 } else {
174 jio_snprintf(buf, buflen,
175 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT,
176 _id, os::current_process_id(), os::current_thread_id());
177 }
178
179 return buf;
180 }
181
182 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
183 char* buf, int buflen, bool verbose) {
184 #ifdef ZERO
185 if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
186 // StackFrameStream uses the frame anchor, which may not have
187 // been set up. This can be done at any time in Zero, however,
188 // so if it hasn't been set up then we just set it up now and
189 // clear it again when we're done.
190 bool has_last_Java_frame = jt->has_last_Java_frame();
191 if (!has_last_Java_frame)
192 jt->set_last_Java_frame();
193 st->print("Java frames:");
194 st->cr();
195
196 // Print the frames
197 StackFrameStream sfs(jt);
198 for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
199 sfs.current()->zero_print_on_error(i, st, buf, buflen);
200 st->cr();
201 }
202
203 // Reset the frame anchor if necessary
204 if (!has_last_Java_frame)
205 jt->reset_last_Java_frame();
206 }
207 #else
208 if (jt->has_last_Java_frame()) {
209 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
210 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
211 sfs.current()->print_on_error(st, buf, buflen, verbose);
212 st->cr();
213 }
214 }
215 #endif // ZERO
216 }
217
218 void VMError::print_native_stack(outputStream* st, frame fr, Thread* t, char* buf, int buf_size) {
219
220 // see if it's a valid frame
221 if (fr.pc()) {
222 st->print_cr("Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)");
223
224 int count = 0;
225 while (count++ < StackPrintLimit) {
226 fr.print_on_error(st, buf, buf_size);
227 if (fr.pc()) { // print source file and line, if available
228 char buf[128];
229 int line_no;
230 if (Decoder::get_source_info(fr.pc(), buf, sizeof(buf), &line_no)) {
231 st->print(" (%s:%d)", buf, line_no);
232 }
233 }
234 st->cr();
235 // Compiled code may use EBP register on x86 so it looks like
236 // non-walkable C frame. Use frame.sender() for java frames.
237 if (t && t->is_Java_thread()) {
238 // Catch very first native frame by using stack address.
239 // For JavaThread stack_base and stack_size should be set.
240 if (!t->on_local_stack((address)(fr.real_fp() + 1))) {
241 break;
242 }
243 if (fr.is_java_frame() || fr.is_native_frame() || fr.is_runtime_frame()) {
244 RegisterMap map((JavaThread*)t, false); // No update
245 fr = fr.sender(&map);
246 } else {
247 // is_first_C_frame() does only simple checks for frame pointer,
248 // it will pass if java compiled code has a pointer in EBP.
249 if (os::is_first_C_frame(&fr)) break;
250 fr = os::get_sender_for_C_frame(&fr);
251 }
252 } else {
253 if (os::is_first_C_frame(&fr)) break;
254 fr = os::get_sender_for_C_frame(&fr);
255 }
256 }
257
258 if (count > StackPrintLimit) {
259 st->print_cr("...<more frames>...");
260 }
261
262 st->cr();
263 }
264 }
265
266 static void print_oom_reasons(outputStream* st) {
267 st->print_cr("# Possible reasons:");
268 st->print_cr("# The system is out of physical RAM or swap space");
269 if (UseCompressedOops) {
270 st->print_cr("# The process is running with CompressedOops enabled, and the Java Heap may be blocking the growth of the native heap");
271 }
272 if (LogBytesPerWord == 2) {
273 st->print_cr("# In 32 bit mode, the process size limit was hit");
274 }
275 st->print_cr("# Possible solutions:");
276 st->print_cr("# Reduce memory load on the system");
277 st->print_cr("# Increase physical memory or swap space");
278 st->print_cr("# Check if swap backing store is full");
279 if (LogBytesPerWord == 2) {
280 st->print_cr("# Use 64 bit Java on a 64 bit OS");
281 }
282 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)");
283 st->print_cr("# Decrease number of Java threads");
284 st->print_cr("# Decrease Java thread stack sizes (-Xss)");
285 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize=");
286 if (UseCompressedOops) {
287 switch (Universe::narrow_oop_mode()) {
288 case Universe::UnscaledNarrowOop:
289 st->print_cr("# JVM is running with Unscaled Compressed Oops mode in which the Java heap is");
290 st->print_cr("# placed in the first 4GB address space. The Java Heap base address is the");
291 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
292 st->print_cr("# to set the Java Heap base and to place the Java Heap above 4GB virtual address.");
293 break;
294 case Universe::ZeroBasedNarrowOop:
295 st->print_cr("# JVM is running with Zero Based Compressed Oops mode in which the Java heap is");
296 st->print_cr("# placed in the first 32GB address space. The Java Heap base address is the");
297 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
298 st->print_cr("# to set the Java Heap base and to place the Java Heap above 32GB virtual address.");
299 break;
300 default:
301 break;
302 }
303 }
304 st->print_cr("# This output file may be truncated or incomplete.");
305 }
306
307 static void report_vm_version(outputStream* st, char* buf, int buflen) {
308 // VM version
309 st->print_cr("#");
310 JDK_Version::current().to_string(buf, buflen);
311 const char* runtime_name = JDK_Version::runtime_name() != NULL ?
312 JDK_Version::runtime_name() : "";
313 const char* runtime_version = JDK_Version::runtime_version() != NULL ?
314 JDK_Version::runtime_version() : "";
315 const char* jdk_debug_level = Abstract_VM_Version::printable_jdk_debug_level() != NULL ?
316 Abstract_VM_Version::printable_jdk_debug_level() : "";
317
318 st->print_cr("# JRE version: %s (%s) (%sbuild %s)", runtime_name, buf,
319 jdk_debug_level, runtime_version);
320
321 // This is the long version with some default settings added
322 st->print_cr("# Java VM: %s (%s%s, %s%s%s%s%s, %s, %s)",
323 Abstract_VM_Version::vm_name(),
324 jdk_debug_level,
325 Abstract_VM_Version::vm_release(),
326 Abstract_VM_Version::vm_info_string(),
327 TieredCompilation ? ", tiered" : "",
328 #if INCLUDE_JVMCI
329 EnableJVMCI ? ", jvmci" : "",
330 UseJVMCICompiler ? ", jvmci compiler" : "",
331 #else
332 "", "",
333 #endif
334 UseCompressedOops ? ", compressed oops" : "",
335 GCConfig::hs_err_name(),
336 Abstract_VM_Version::vm_platform_string()
337 );
338 }
339
340 // This is the main function to report a fatal error. Only one thread can
341 // call this function, so we don't need to worry about MT-safety. But it's
342 // possible that the error handler itself may crash or die on an internal
343 // error, for example, when the stack/heap is badly damaged. We must be
344 // able to handle recursive errors that happen inside error handler.
345 //
346 // Error reporting is done in several steps. If a crash or internal error
347 // occurred when reporting an error, the nested signal/exception handler
348 // can skip steps that are already (or partially) done. Error reporting will
349 // continue from the next step. This allows us to retrieve and print
350 // information that may be unsafe to get after a fatal error. If it happens,
351 // you may find nested report_and_die() frames when you look at the stack
352 // in a debugger.
353 //
354 // In general, a hang in error handler is much worse than a crash or internal
355 // error, as it's harder to recover from a hang. Deadlock can happen if we
356 // try to grab a lock that is already owned by current thread, or if the
357 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
358 // error handler and all the functions it called should avoid grabbing any
359 // lock. An important thing to notice is that memory allocation needs a lock.
360 //
361 // We should avoid using large stack allocated buffers. Many errors happen
362 // when stack space is already low. Making things even worse is that there
363 // could be nested report_and_die() calls on stack (see above). Only one
364 // thread can report error, so large buffers are statically allocated in data
365 // segment.
366
367 int VMError::_current_step;
368 const char* VMError::_current_step_info;
369
370 volatile jlong VMError::_reporting_start_time = -1;
371 volatile bool VMError::_reporting_did_timeout = false;
372 volatile jlong VMError::_step_start_time = -1;
373 volatile bool VMError::_step_did_timeout = false;
374
375 // Helper, return current timestamp for timeout handling.
376 jlong VMError::get_current_timestamp() {
377 return os::javaTimeNanos();
378 }
379 // Factor to translate the timestamp to seconds.
380 #define TIMESTAMP_TO_SECONDS_FACTOR (1000 * 1000 * 1000)
381
382 void VMError::record_reporting_start_time() {
383 const jlong now = get_current_timestamp();
384 Atomic::store(now, &_reporting_start_time);
385 }
386
387 jlong VMError::get_reporting_start_time() {
388 return Atomic::load(&_reporting_start_time);
389 }
390
391 void VMError::record_step_start_time() {
392 const jlong now = get_current_timestamp();
393 Atomic::store(now, &_step_start_time);
394 }
395
396 jlong VMError::get_step_start_time() {
397 return Atomic::load(&_step_start_time);
398 }
399
400 void VMError::report(outputStream* st, bool _verbose) {
401
402 # define BEGIN if (_current_step == 0) { _current_step = __LINE__;
403 # define STEP(s) } if (_current_step < __LINE__) { _current_step = __LINE__; _current_step_info = s; \
404 record_step_start_time(); _step_did_timeout = false;
405 # define END }
406
407 // don't allocate large buffer on stack
408 static char buf[O_BUFLEN];
409
410 BEGIN
411
412 STEP("printing fatal error message")
413
414 st->print_cr("#");
415 if (should_report_bug(_id)) {
416 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
417 } else {
418 st->print_cr("# There is insufficient memory for the Java "
419 "Runtime Environment to continue.");
420 }
421
422 #ifndef PRODUCT
423 // Error handler self tests
424
425 // test secondary error handling. Test it twice, to test that resetting
426 // error handler after a secondary crash works.
427 STEP("test secondary crash 1")
428 if (_verbose && TestCrashInErrorHandler != 0) {
429 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
430 TestCrashInErrorHandler);
431 controlled_crash(TestCrashInErrorHandler);
432 }
433
434 STEP("test secondary crash 2")
435 if (_verbose && TestCrashInErrorHandler != 0) {
436 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
437 TestCrashInErrorHandler);
438 controlled_crash(TestCrashInErrorHandler);
439 }
440
441 // TestUnresponsiveErrorHandler: We want to test both step timeouts and global timeout.
442 // Step to global timeout ratio is 4:1, so in order to be absolutely sure we hit the
443 // global timeout, let's execute the timeout step five times.
444 // See corresponding test in test/runtime/ErrorHandling/TimeoutInErrorHandlingTest.java
445 #define TIMEOUT_TEST_STEP STEP("test unresponsive error reporting step") \
446 if (_verbose && TestUnresponsiveErrorHandler) { os::infinite_sleep(); }
447 TIMEOUT_TEST_STEP
448 TIMEOUT_TEST_STEP
449 TIMEOUT_TEST_STEP
450 TIMEOUT_TEST_STEP
451 TIMEOUT_TEST_STEP
452
453 STEP("test safefetch in error handler")
454 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice
455 // to test that resetting the signal handler works correctly.
456 if (_verbose && TestSafeFetchInErrorHandler) {
457 st->print_cr("Will test SafeFetch...");
458 if (CanUseSafeFetch32()) {
459 int* const invalid_pointer = (int*) get_segfault_address();
460 const int x = 0x76543210;
461 int i1 = SafeFetch32(invalid_pointer, x);
462 int i2 = SafeFetch32(invalid_pointer, x);
463 if (i1 == x && i2 == x) {
464 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern
465 } else {
466 st->print_cr("??");
467 }
468 } else {
469 st->print_cr("not possible; skipped.");
470 }
471 }
472 #endif // PRODUCT
473
474 STEP("printing type of error")
475
476 switch(static_cast<unsigned int>(_id)) {
477 case OOM_MALLOC_ERROR:
478 case OOM_MMAP_ERROR:
479 if (_size) {
480 st->print("# Native memory allocation ");
481 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
482 "(mmap) failed to map ");
483 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
484 st->print("%s", buf);
485 st->print(" bytes");
486 if (strlen(_detail_msg) > 0) {
487 st->print(" for ");
488 st->print("%s", _detail_msg);
489 }
490 st->cr();
491 } else {
492 if (strlen(_detail_msg) > 0) {
493 st->print("# ");
494 st->print_cr("%s", _detail_msg);
495 }
496 }
497 // In error file give some solutions
498 if (_verbose) {
499 print_oom_reasons(st);
500 } else {
501 return; // that's enough for the screen
502 }
503 break;
504 case INTERNAL_ERROR:
505 default:
506 break;
507 }
508
509 STEP("printing exception/signal name")
510
511 st->print_cr("#");
512 st->print("# ");
513 // Is it an OS exception/signal?
514 if (os::exception_name(_id, buf, sizeof(buf))) {
515 st->print("%s", buf);
516 st->print(" (0x%x)", _id); // signal number
517 st->print(" at pc=" PTR_FORMAT, p2i(_pc));
518 } else {
519 if (should_report_bug(_id)) {
520 st->print("Internal Error");
521 } else {
522 st->print("Out of Memory Error");
523 }
524 if (_filename != NULL && _lineno > 0) {
525 #ifdef PRODUCT
526 // In product mode chop off pathname?
527 char separator = os::file_separator()[0];
528 const char *p = strrchr(_filename, separator);
529 const char *file = p ? p+1 : _filename;
530 #else
531 const char *file = _filename;
532 #endif
533 st->print(" (%s:%d)", file, _lineno);
534 } else {
535 st->print(" (0x%x)", _id);
536 }
537 }
538
539 STEP("printing current thread and pid")
540
541 // process id, thread id
542 st->print(", pid=%d", os::current_process_id());
543 st->print(", tid=" UINTX_FORMAT, os::current_thread_id());
544 st->cr();
545
546 STEP("printing error message")
547
548 if (should_report_bug(_id)) { // already printed the message.
549 // error message
550 if (strlen(_detail_msg) > 0) {
551 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg);
552 } else if (_message) {
553 st->print_cr("# Error: %s", _message);
554 }
555 }
556
557 STEP("printing Java version string")
558
559 report_vm_version(st, buf, sizeof(buf));
560
561 STEP("printing problematic frame")
562
563 // Print current frame if we have a context (i.e. it's a crash)
564 if (_context) {
565 st->print_cr("# Problematic frame:");
566 st->print("# ");
567 frame fr = os::fetch_frame_from_context(_context);
568 fr.print_on_error(st, buf, sizeof(buf));
569 st->cr();
570 st->print_cr("#");
571 }
572
573 STEP("printing core file information")
574 st->print("# ");
575 if (CreateCoredumpOnCrash) {
576 if (coredump_status) {
577 st->print("Core dump will be written. Default location: %s", coredump_message);
578 } else {
579 st->print("No core dump will be written. %s", coredump_message);
580 }
581 } else {
582 st->print("CreateCoredumpOnCrash turned off, no core file dumped");
583 }
584 st->cr();
585 st->print_cr("#");
586
587 STEP("printing bug submit message")
588
589 if (should_report_bug(_id) && _verbose) {
590 print_bug_submit_message(st, _thread);
591 }
592
593 STEP("printing summary")
594
595 if (_verbose) {
596 st->cr();
597 st->print_cr("--------------- S U M M A R Y ------------");
598 st->cr();
599 }
600
601 STEP("printing VM option summary")
602
603 if (_verbose) {
604 // VM options
605 Arguments::print_summary_on(st);
606 st->cr();
607 }
608
609 STEP("printing summary machine and OS info")
610
611 if (_verbose) {
612 os::print_summary_info(st, buf, sizeof(buf));
613 }
614
615
616 STEP("printing date and time")
617
618 if (_verbose) {
619 os::print_date_and_time(st, buf, sizeof(buf));
620 }
621
622 STEP("printing thread")
623
624 if (_verbose) {
625 st->cr();
626 st->print_cr("--------------- T H R E A D ---------------");
627 st->cr();
628 }
629
630 STEP("printing current thread")
631
632 // current thread
633 if (_verbose) {
634 if (_thread) {
635 st->print("Current thread (" PTR_FORMAT "): ", p2i(_thread));
636 _thread->print_on_error(st, buf, sizeof(buf));
637 st->cr();
638 } else {
639 st->print_cr("Current thread is native thread");
640 }
641 st->cr();
642 }
643
644 STEP("printing current compile task")
645
646 if (_verbose && _thread && _thread->is_Compiler_thread()) {
647 CompilerThread* t = (CompilerThread*)_thread;
648 if (t->task()) {
649 st->cr();
650 st->print_cr("Current CompileTask:");
651 t->task()->print_line_on_error(st, buf, sizeof(buf));
652 st->cr();
653 }
654 }
655
656
657 STEP("printing stack bounds")
658
659 if (_verbose) {
660 st->print("Stack: ");
661
662 address stack_top;
663 size_t stack_size;
664
665 if (_thread) {
666 stack_top = _thread->stack_base();
667 stack_size = _thread->stack_size();
668 } else {
669 stack_top = os::current_stack_base();
670 stack_size = os::current_stack_size();
671 }
672
673 address stack_bottom = stack_top - stack_size;
674 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", p2i(stack_bottom), p2i(stack_top));
675
676 frame fr = _context ? os::fetch_frame_from_context(_context)
677 : os::current_frame();
678
679 if (fr.sp()) {
680 st->print(", sp=" PTR_FORMAT, p2i(fr.sp()));
681 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
682 st->print(", free space=" SIZE_FORMAT "k", free_stack_size);
683 }
684
685 st->cr();
686 }
687
688 STEP("printing native stack")
689
690 if (_verbose) {
691 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
692 // We have printed the native stack in platform-specific code
693 // Windows/x64 needs special handling.
694 } else {
695 frame fr = _context ? os::fetch_frame_from_context(_context)
696 : os::current_frame();
697
698 print_native_stack(st, fr, _thread, buf, sizeof(buf));
699 }
700 }
701
702 STEP("printing Java stack")
703
704 if (_verbose && _thread && _thread->is_Java_thread()) {
705 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
706 }
707
708 STEP("printing target Java thread stack")
709
710 // printing Java thread stack trace if it is involved in GC crash
711 if (_verbose && _thread && (_thread->is_Named_thread())) {
712 JavaThread* jt = ((NamedThread *)_thread)->processed_thread();
713 if (jt != NULL) {
714 st->print_cr("JavaThread " PTR_FORMAT " (nid = %d) was being processed", p2i(jt), jt->osthread()->thread_id());
715 print_stack_trace(st, jt, buf, sizeof(buf), true);
716 }
717 }
718
719 STEP("printing siginfo")
720
721 // signal no, signal code, address that caused the fault
722 if (_verbose && _siginfo) {
723 st->cr();
724 os::print_siginfo(st, _siginfo);
725 st->cr();
726 }
727
728 STEP("CDS archive access warning")
729
730 // Print an explicit hint if we crashed on access to the CDS archive.
731 if (_verbose && _siginfo) {
732 check_failing_cds_access(st, _siginfo);
733 st->cr();
734 }
735
736 STEP("printing register info")
737
738 // decode register contents if possible
739 if (_verbose && _context && Universe::is_fully_initialized()) {
740 os::print_register_info(st, _context);
741 st->cr();
742 }
743
744 STEP("printing registers, top of stack, instructions near pc")
745
746 // registers, top of stack, instructions near pc
747 if (_verbose && _context) {
748 os::print_context(st, _context);
749 st->cr();
750 }
751
752 STEP("printing code blob if possible")
753
754 if (_verbose && _context) {
755 CodeBlob* cb = CodeCache::find_blob(_pc);
756 if (cb != NULL) {
757 if (Interpreter::contains(_pc)) {
758 // The interpreter CodeBlob is very large so try to print the codelet instead.
759 InterpreterCodelet* codelet = Interpreter::codelet_containing(_pc);
760 if (codelet != NULL) {
761 codelet->print_on(st);
762 Disassembler::decode(codelet->code_begin(), codelet->code_end(), st);
763 }
764 } else {
765 StubCodeDesc* desc = StubCodeDesc::desc_for(_pc);
766 if (desc != NULL) {
767 desc->print_on(st);
768 Disassembler::decode(desc->begin(), desc->end(), st);
769 } else if (_thread != NULL) {
770 // Disassembling nmethod will incur resource memory allocation,
771 // only do so when thread is valid.
772 ResourceMark rm(_thread);
773 Disassembler::decode(cb, st);
774 st->cr();
775 }
776 }
777 }
778 }
779
780 STEP("printing VM operation")
781
782 if (_verbose && _thread && _thread->is_VM_thread()) {
783 VMThread* t = (VMThread*)_thread;
784 VM_Operation* op = t->vm_operation();
785 if (op) {
786 op->print_on_error(st);
787 st->cr();
788 st->cr();
789 }
790 }
791
792 STEP("printing process")
793
794 if (_verbose) {
795 st->cr();
796 st->print_cr("--------------- P R O C E S S ---------------");
797 st->cr();
798 }
799
800 STEP("printing all threads")
801
802 // all threads
803 if (_verbose && _thread) {
804 Threads::print_on_error(st, _thread, buf, sizeof(buf));
805 st->cr();
806 }
807
808 STEP("printing VM state")
809
810 if (_verbose) {
811 // Safepoint state
812 st->print("VM state:");
813
814 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
815 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
816 else st->print("not at safepoint");
817
818 // Also see if error occurred during initialization or shutdown
819 if (!Universe::is_fully_initialized()) {
820 st->print(" (not fully initialized)");
821 } else if (VM_Exit::vm_exited()) {
822 st->print(" (shutting down)");
823 } else {
824 st->print(" (normal execution)");
825 }
826 st->cr();
827 st->cr();
828 }
829
830 STEP("printing owned locks on error")
831
832 // mutexes/monitors that currently have an owner
833 if (_verbose) {
834 print_owned_locks_on_error(st);
835 st->cr();
836 }
837
838 STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
839
840 if (_verbose && Exceptions::has_exception_counts()) {
841 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
842 Exceptions::print_exception_counts_on_error(st);
843 st->cr();
844 }
845
846 STEP("printing compressed oops mode")
847
848 if (_verbose && UseCompressedOops) {
849 Universe::print_compressed_oops_mode(st);
850 if (UseCompressedClassPointers) {
851 Metaspace::print_compressed_class_space(st);
852 }
853 st->cr();
854 }
855
856 STEP("printing heap information")
857
858 if (_verbose && Universe::is_fully_initialized()) {
859 Universe::heap()->print_on_error(st);
860 st->cr();
861 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page()));
862 st->cr();
863 }
864
865 STEP("printing metaspace information")
866
867 if (_verbose && Universe::is_fully_initialized()) {
868 st->print_cr("Metaspace:");
869 MetaspaceUtils::print_basic_report(st, 0);
870 }
871
872 STEP("printing code cache information")
873
874 if (_verbose && Universe::is_fully_initialized()) {
875 // print code cache information before vm abort
876 CodeCache::print_summary(st);
877 st->cr();
878 }
879
880 STEP("printing ring buffers")
881
882 if (_verbose) {
883 Events::print_all(st);
884 st->cr();
885 }
886
887 STEP("printing dynamic libraries")
888
889 if (_verbose) {
890 // dynamic libraries, or memory map
891 os::print_dll_info(st);
892 st->cr();
893 }
894
895 STEP("printing native decoder state")
896
897 if (_verbose) {
898 Decoder::print_state_on(st);
899 st->cr();
900 }
901
902 STEP("printing VM options")
903
904 if (_verbose) {
905 // VM options
906 Arguments::print_on(st);
907 st->cr();
908 }
909
910 STEP("printing warning if internal testing API used")
911
912 if (WhiteBox::used()) {
913 st->print_cr("Unsupported internal testing APIs have been used.");
914 st->cr();
915 }
916
917 STEP("printing log configuration")
918 if (_verbose){
919 st->print_cr("Logging:");
920 LogConfiguration::describe_current_configuration(st);
921 st->cr();
922 }
923
924 STEP("printing all environment variables")
925
926 if (_verbose) {
927 os::print_environment_variables(st, env_list);
928 st->cr();
929 }
930
931 STEP("printing signal handlers")
932
933 if (_verbose) {
934 os::print_signal_handlers(st, buf, sizeof(buf));
935 st->cr();
936 }
937
938 STEP("Native Memory Tracking")
939 if (_verbose) {
940 MemTracker::error_report(st);
941 }
942
943 STEP("printing system")
944
945 if (_verbose) {
946 st->cr();
947 st->print_cr("--------------- S Y S T E M ---------------");
948 st->cr();
949 }
950
951 STEP("printing OS information")
952
953 if (_verbose) {
954 os::print_os_info(st);
955 st->cr();
956 }
957
958 STEP("printing CPU info")
959 if (_verbose) {
960 os::print_cpu_info(st, buf, sizeof(buf));
961 st->cr();
962 }
963
964 STEP("printing memory info")
965
966 if (_verbose) {
967 os::print_memory_info(st);
968 st->cr();
969 }
970
971 STEP("printing internal vm info")
972
973 if (_verbose) {
974 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
975 st->cr();
976 }
977
978 // print a defined marker to show that error handling finished correctly.
979 STEP("printing end marker")
980
981 if (_verbose) {
982 st->print_cr("END.");
983 }
984
985 END
986
987 # undef BEGIN
988 # undef STEP
989 # undef END
990 }
991
992 // Report for the vm_info_cmd. This prints out the information above omitting
993 // crash and thread specific information. If output is added above, it should be added
994 // here also, if it is safe to call during a running process.
995 void VMError::print_vm_info(outputStream* st) {
996
997 char buf[O_BUFLEN];
998 report_vm_version(st, buf, sizeof(buf));
999
1000 // STEP("printing summary")
1001
1002 st->cr();
1003 st->print_cr("--------------- S U M M A R Y ------------");
1004 st->cr();
1005
1006 // STEP("printing VM option summary")
1007
1008 // VM options
1009 Arguments::print_summary_on(st);
1010 st->cr();
1011
1012 // STEP("printing summary machine and OS info")
1013
1014 os::print_summary_info(st, buf, sizeof(buf));
1015
1016 // STEP("printing date and time")
1017
1018 os::print_date_and_time(st, buf, sizeof(buf));
1019
1020 // Skip: STEP("printing thread")
1021
1022 // STEP("printing process")
1023
1024 st->cr();
1025 st->print_cr("--------------- P R O C E S S ---------------");
1026 st->cr();
1027
1028 // STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
1029
1030 if (Exceptions::has_exception_counts()) {
1031 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
1032 Exceptions::print_exception_counts_on_error(st);
1033 st->cr();
1034 }
1035
1036 // STEP("printing compressed oops mode")
1037
1038 if (UseCompressedOops) {
1039 Universe::print_compressed_oops_mode(st);
1040 if (UseCompressedClassPointers) {
1041 Metaspace::print_compressed_class_space(st);
1042 }
1043 st->cr();
1044 }
1045
1046 // STEP("printing heap information")
1047
1048 if (Universe::is_fully_initialized()) {
1049 MutexLocker hl(Heap_lock);
1050 Universe::heap()->print_on_error(st);
1051 st->cr();
1052 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page()));
1053 st->cr();
1054 }
1055
1056 // STEP("printing metaspace information")
1057
1058 if (Universe::is_fully_initialized()) {
1059 st->print_cr("Metaspace:");
1060 MetaspaceUtils::print_basic_report(st, 0);
1061 }
1062
1063 // STEP("printing code cache information")
1064
1065 if (Universe::is_fully_initialized()) {
1066 // print code cache information before vm abort
1067 CodeCache::print_summary(st);
1068 st->cr();
1069 }
1070
1071 // STEP("printing ring buffers")
1072
1073 Events::print_all(st);
1074 st->cr();
1075
1076 // STEP("printing dynamic libraries")
1077
1078 // dynamic libraries, or memory map
1079 os::print_dll_info(st);
1080 st->cr();
1081
1082 // STEP("printing VM options")
1083
1084 // VM options
1085 Arguments::print_on(st);
1086 st->cr();
1087
1088 // STEP("printing warning if internal testing API used")
1089
1090 if (WhiteBox::used()) {
1091 st->print_cr("Unsupported internal testing APIs have been used.");
1092 st->cr();
1093 }
1094
1095 // STEP("printing log configuration")
1096 st->print_cr("Logging:");
1097 LogConfiguration::describe(st);
1098 st->cr();
1099
1100 // STEP("printing all environment variables")
1101
1102 os::print_environment_variables(st, env_list);
1103 st->cr();
1104
1105 // STEP("printing signal handlers")
1106
1107 os::print_signal_handlers(st, buf, sizeof(buf));
1108 st->cr();
1109
1110 // STEP("Native Memory Tracking")
1111
1112 MemTracker::error_report(st);
1113
1114 // STEP("printing system")
1115
1116 st->cr();
1117 st->print_cr("--------------- S Y S T E M ---------------");
1118 st->cr();
1119
1120 // STEP("printing OS information")
1121
1122 os::print_os_info(st);
1123 st->cr();
1124
1125 // STEP("printing CPU info")
1126
1127 os::print_cpu_info(st, buf, sizeof(buf));
1128 st->cr();
1129
1130 // STEP("printing memory info")
1131
1132 os::print_memory_info(st);
1133 st->cr();
1134
1135 // STEP("printing internal vm info")
1136
1137 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
1138 st->cr();
1139
1140 // print a defined marker to show that error handling finished correctly.
1141 // STEP("printing end marker")
1142
1143 st->print_cr("END.");
1144 }
1145
1146 volatile intptr_t VMError::first_error_tid = -1;
1147
1148 // An error could happen before tty is initialized or after it has been
1149 // destroyed.
1150 // Please note: to prevent large stack allocations, the log- and
1151 // output-stream use a global scratch buffer for format printing.
1152 // (see VmError::report_and_die(). Access to those streams is synchronized
1153 // in VmError::report_and_die() - there is only one reporting thread at
1154 // any given time.
1155 fdStream VMError::out(defaultStream::output_fd());
1156 fdStream VMError::log; // error log used by VMError::report_and_die()
1157
1158 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
1159 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
1160 int fd = -1;
1161 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
1162 // the O_EXCL flag will cause the open to fail if the file exists
1163 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666);
1164 }
1165 return fd;
1166 }
1167
1168 /**
1169 * Construct file name for a log file and return it's file descriptor.
1170 * Name and location depends on pattern, default_pattern params and access
1171 * permissions.
1172 */
1173 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) {
1174 int fd = -1;
1175
1176 // If possible, use specified pattern to construct log file name
1177 if (pattern != NULL) {
1178 fd = expand_and_open(pattern, buf, buflen, 0);
1179 }
1180
1181 // Either user didn't specify, or the user's location failed,
1182 // so use the default name in the current directory
1183 if (fd == -1) {
1184 const char* cwd = os::get_current_directory(buf, buflen);
1185 if (cwd != NULL) {
1186 size_t pos = strlen(cwd);
1187 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
1188 pos += fsep_len;
1189 if (fsep_len > 0) {
1190 fd = expand_and_open(default_pattern, buf, buflen, pos);
1191 }
1192 }
1193 }
1194
1195 // try temp directory if it exists.
1196 if (fd == -1) {
1197 const char* tmpdir = os::get_temp_directory();
1198 if (tmpdir != NULL && strlen(tmpdir) > 0) {
1199 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
1200 if (pos > 0) {
1201 fd = expand_and_open(default_pattern, buf, buflen, pos);
1202 }
1203 }
1204 }
1205
1206 return fd;
1207 }
1208
1209 int VMError::_id;
1210 const char* VMError::_message;
1211 char VMError::_detail_msg[1024];
1212 Thread* VMError::_thread;
1213 address VMError::_pc;
1214 void* VMError::_siginfo;
1215 void* VMError::_context;
1216 const char* VMError::_filename;
1217 int VMError::_lineno;
1218 size_t VMError::_size;
1219
1220 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo,
1221 void* context, const char* detail_fmt, ...)
1222 {
1223 va_list detail_args;
1224 va_start(detail_args, detail_fmt);
1225 report_and_die(sig, NULL, detail_fmt, detail_args, thread, pc, siginfo, context, NULL, 0, 0);
1226 va_end(detail_args);
1227 }
1228
1229 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context)
1230 {
1231 report_and_die(thread, sig, pc, siginfo, context, "%s", "");
1232 }
1233
1234 void VMError::report_and_die(const char* message, const char* detail_fmt, ...)
1235 {
1236 va_list detail_args;
1237 va_start(detail_args, detail_fmt);
1238 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, NULL, NULL, NULL, NULL, NULL, 0, 0);
1239 va_end(detail_args);
1240 }
1241
1242 void VMError::report_and_die(const char* message)
1243 {
1244 report_and_die(message, "%s", "");
1245 }
1246
1247 void VMError::report_and_die(Thread* thread, void* context, const char* filename, int lineno, const char* message,
1248 const char* detail_fmt, va_list detail_args)
1249 {
1250 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, thread, NULL, NULL, context, filename, lineno, 0);
1251 }
1252
1253 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, size_t size,
1254 VMErrorType vm_err_type, const char* detail_fmt, va_list detail_args) {
1255 report_and_die(vm_err_type, NULL, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, size);
1256 }
1257
1258 void VMError::report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args,
1259 Thread* thread, address pc, void* siginfo, void* context, const char* filename,
1260 int lineno, size_t size)
1261 {
1262 // Don't allocate large buffer on stack
1263 static char buffer[O_BUFLEN];
1264 out.set_scratch_buffer(buffer, sizeof(buffer));
1265 log.set_scratch_buffer(buffer, sizeof(buffer));
1266
1267 // How many errors occurred in error handler when reporting first_error.
1268 static int recursive_error_count;
1269
1270 // We will first print a brief message to standard out (verbose = false),
1271 // then save detailed information in log file (verbose = true).
1272 static bool out_done = false; // done printing to standard out
1273 static bool log_done = false; // done saving error log
1274 static bool transmit_report_done = false; // done error reporting
1275
1276 if (SuppressFatalErrorMessage) {
1277 os::abort(CreateCoredumpOnCrash);
1278 }
1279 intptr_t mytid = os::current_thread_id();
1280 if (first_error_tid == -1 &&
1281 Atomic::cmpxchg(mytid, &first_error_tid, (intptr_t)-1) == -1) {
1282
1283 // Initialize time stamps to use the same base.
1284 out.time_stamp().update_to(1);
1285 log.time_stamp().update_to(1);
1286
1287 _id = id;
1288 _message = message;
1289 _thread = thread;
1290 _pc = pc;
1291 _siginfo = siginfo;
1292 _context = context;
1293 _filename = filename;
1294 _lineno = lineno;
1295 _size = size;
1296 jio_vsnprintf(_detail_msg, sizeof(_detail_msg), detail_fmt, detail_args);
1297
1298 // first time
1299 _error_reported = true;
1300
1301 reporting_started();
1302 record_reporting_start_time();
1303
1304 if (ShowMessageBoxOnError || PauseAtExit) {
1305 show_message_box(buffer, sizeof(buffer));
1306
1307 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
1308 // WatcherThread can kill JVM if the error handler hangs.
1309 ShowMessageBoxOnError = false;
1310 }
1311
1312 os::check_dump_limit(buffer, sizeof(buffer));
1313
1314 // reset signal handlers or exception filter; make sure recursive crashes
1315 // are handled properly.
1316 reset_signal_handlers();
1317
1318 EventShutdown e;
1319 if (e.should_commit()) {
1320 e.set_reason("VM Error");
1321 e.commit();
1322 }
1323
1324 TRACE_VM_ERROR();
1325
1326 } else {
1327 // If UseOsErrorReporting we call this for each level of the call stack
1328 // while searching for the exception handler. Only the first level needs
1329 // to be reported.
1330 if (UseOSErrorReporting && log_done) return;
1331
1332 // This is not the first error, see if it happened in a different thread
1333 // or in the same thread during error reporting.
1334 if (first_error_tid != mytid) {
1335 char msgbuf[64];
1336 jio_snprintf(msgbuf, sizeof(msgbuf),
1337 "[thread " INTX_FORMAT " also had an error]",
1338 mytid);
1339 out.print_raw_cr(msgbuf);
1340
1341 // error reporting is not MT-safe, block current thread
1342 os::infinite_sleep();
1343
1344 } else {
1345 if (recursive_error_count++ > 30) {
1346 out.print_raw_cr("[Too many errors, abort]");
1347 os::die();
1348 }
1349
1350 outputStream* const st = log.is_open() ? &log : &out;
1351 st->cr();
1352
1353 // Timeout handling.
1354 if (_step_did_timeout) {
1355 // The current step had a timeout. Lets continue reporting with the next step.
1356 st->print_raw("[timeout occurred during error reporting in step \"");
1357 st->print_raw(_current_step_info);
1358 st->print_cr("\"] after " INT64_FORMAT " s.",
1359 (int64_t)
1360 ((get_current_timestamp() - _step_start_time) / TIMESTAMP_TO_SECONDS_FACTOR));
1361 } else if (_reporting_did_timeout) {
1362 // We hit ErrorLogTimeout. Reporting will stop altogether. Let's wrap things
1363 // up, the process is about to be stopped by the WatcherThread.
1364 st->print_cr("------ Timeout during error reporting after " INT64_FORMAT " s. ------",
1365 (int64_t)
1366 ((get_current_timestamp() - _reporting_start_time) / TIMESTAMP_TO_SECONDS_FACTOR));
1367 st->flush();
1368 // Watcherthread is about to call os::die. Lets just wait.
1369 os::infinite_sleep();
1370 } else {
1371 // Crash or assert during error reporting. Lets continue reporting with the next step.
1372 jio_snprintf(buffer, sizeof(buffer),
1373 "[error occurred during error reporting (%s), id 0x%x]",
1374 _current_step_info, _id);
1375 st->print_raw_cr(buffer);
1376 st->cr();
1377 }
1378 }
1379 }
1380
1381 // print to screen
1382 if (!out_done) {
1383 report(&out, false);
1384
1385 out_done = true;
1386
1387 _current_step = 0;
1388 _current_step_info = "";
1389 }
1390
1391 // print to error log file
1392 if (!log_done) {
1393 // see if log file is already open
1394 if (!log.is_open()) {
1395 // open log file
1396 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer));
1397 if (fd != -1) {
1398 out.print_raw("# An error report file with more information is saved as:\n# ");
1399 out.print_raw_cr(buffer);
1400
1401 log.set_fd(fd);
1402 } else {
1403 out.print_raw_cr("# Can not save log file, dump to screen..");
1404 log.set_fd(defaultStream::output_fd());
1405 /* Error reporting currently needs dumpfile.
1406 * Maybe implement direct streaming in the future.*/
1407 transmit_report_done = true;
1408 }
1409 }
1410
1411 report(&log, true);
1412 log_done = true;
1413 _current_step = 0;
1414 _current_step_info = "";
1415
1416 // Run error reporting to determine whether or not to report the crash.
1417 if (!transmit_report_done && should_report_bug(_id)) {
1418 transmit_report_done = true;
1419 const int fd2 = ::dup(log.fd());
1420 if (fd2 != -1) {
1421 FILE* const hs_err = ::fdopen(fd2, "r");
1422 if (NULL != hs_err) {
1423 ErrorReporter er;
1424 er.call(hs_err, buffer, O_BUFLEN);
1425 ::fclose(hs_err);
1426 }
1427 }
1428 }
1429
1430 if (log.fd() != defaultStream::output_fd()) {
1431 close(log.fd());
1432 }
1433
1434 log.set_fd(-1);
1435 }
1436
1437 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay
1438 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1439 skip_replay = true;
1440 ciEnv* env = ciEnv::current();
1441 if (env != NULL) {
1442 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer));
1443 if (fd != -1) {
1444 FILE* replay_data_file = os::open(fd, "w");
1445 if (replay_data_file != NULL) {
1446 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1447 env->dump_replay_data_unsafe(&replay_data_stream);
1448 out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1449 out.print_raw_cr(buffer);
1450 } else {
1451 int e = errno;
1452 out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1453 out.print_raw_cr(os::strerror(e));
1454 }
1455 }
1456 }
1457 }
1458
1459 static bool skip_bug_url = !should_report_bug(_id);
1460 if (!skip_bug_url) {
1461 skip_bug_url = true;
1462
1463 out.print_raw_cr("#");
1464 print_bug_submit_message(&out, _thread);
1465 }
1466
1467 static bool skip_OnError = false;
1468 if (!skip_OnError && OnError && OnError[0]) {
1469 skip_OnError = true;
1470
1471 // Flush output and finish logs before running OnError commands.
1472 ostream_abort();
1473
1474 out.print_raw_cr("#");
1475 out.print_raw ("# -XX:OnError=\"");
1476 out.print_raw (OnError);
1477 out.print_raw_cr("\"");
1478
1479 char* cmd;
1480 const char* ptr = OnError;
1481 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1482 out.print_raw ("# Executing ");
1483 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1484 out.print_raw ("/bin/sh -c ");
1485 #elif defined(SOLARIS)
1486 out.print_raw ("/usr/bin/sh -c ");
1487 #elif defined(_WINDOWS)
1488 out.print_raw ("cmd /C ");
1489 #endif
1490 out.print_raw ("\"");
1491 out.print_raw (cmd);
1492 out.print_raw_cr("\" ...");
1493
1494 if (os::fork_and_exec(cmd) < 0) {
1495 out.print_cr("os::fork_and_exec failed: %s (%s=%d)",
1496 os::strerror(errno), os::errno_name(errno), errno);
1497 }
1498 }
1499
1500 // done with OnError
1501 OnError = NULL;
1502 }
1503
1504 if (!UseOSErrorReporting) {
1505 // os::abort() will call abort hooks, try it first.
1506 static bool skip_os_abort = false;
1507 if (!skip_os_abort) {
1508 skip_os_abort = true;
1509 bool dump_core = should_report_bug(_id);
1510 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context);
1511 }
1512
1513 // if os::abort() doesn't abort, try os::die();
1514 os::die();
1515 }
1516 }
1517
1518 /*
1519 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1520 * ensures utilities such as jmap can observe the process is a consistent state.
1521 */
1522 class VM_ReportJavaOutOfMemory : public VM_Operation {
1523 private:
1524 const char* _message;
1525 public:
1526 VM_ReportJavaOutOfMemory(const char* message) { _message = message; }
1527 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
1528 void doit();
1529 };
1530
1531 void VM_ReportJavaOutOfMemory::doit() {
1532 // Don't allocate large buffer on stack
1533 static char buffer[O_BUFLEN];
1534
1535 tty->print_cr("#");
1536 tty->print_cr("# java.lang.OutOfMemoryError: %s", _message);
1537 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1538
1539 // make heap parsability
1540 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
1541
1542 char* cmd;
1543 const char* ptr = OnOutOfMemoryError;
1544 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1545 tty->print("# Executing ");
1546 #if defined(LINUX)
1547 tty->print ("/bin/sh -c ");
1548 #elif defined(SOLARIS)
1549 tty->print ("/usr/bin/sh -c ");
1550 #endif
1551 tty->print_cr("\"%s\"...", cmd);
1552
1553 if (os::fork_and_exec(cmd) < 0) {
1554 tty->print_cr("os::fork_and_exec failed: %s (%s=%d)",
1555 os::strerror(errno), os::errno_name(errno), errno);
1556 }
1557 }
1558 }
1559
1560 void VMError::report_java_out_of_memory(const char* message) {
1561 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1562 MutexLocker ml(Heap_lock);
1563 VM_ReportJavaOutOfMemory op(message);
1564 VMThread::execute(&op);
1565 }
1566 }
1567
1568 void VMError::show_message_box(char *buf, int buflen) {
1569 bool yes;
1570 do {
1571 error_string(buf, buflen);
1572 yes = os::start_debugging(buf,buflen);
1573 } while (yes);
1574 }
1575
1576 // Timeout handling: check if a timeout happened (either a single step did
1577 // timeout or the whole of error reporting hit ErrorLogTimeout). Interrupt
1578 // the reporting thread if that is the case.
1579 bool VMError::check_timeout() {
1580
1581 if (ErrorLogTimeout == 0) {
1582 return false;
1583 }
1584
1585 // Do not check for timeouts if we still have a message box to show to the
1586 // user or if there are OnError handlers to be run.
1587 if (ShowMessageBoxOnError
1588 || (OnError != NULL && OnError[0] != '\0')
1589 || Arguments::abort_hook() != NULL) {
1590 return false;
1591 }
1592
1593 const jlong reporting_start_time_l = get_reporting_start_time();
1594 const jlong now = get_current_timestamp();
1595 // Timestamp is stored in nanos.
1596 if (reporting_start_time_l > 0) {
1597 const jlong end = reporting_start_time_l + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR;
1598 if (end <= now) {
1599 _reporting_did_timeout = true;
1600 interrupt_reporting_thread();
1601 return true; // global timeout
1602 }
1603 }
1604
1605 const jlong step_start_time_l = get_step_start_time();
1606 if (step_start_time_l > 0) {
1607 // A step times out after a quarter of the total timeout. Steps are mostly fast unless they
1608 // hang for some reason, so this simple rule allows for three hanging step and still
1609 // hopefully leaves time enough for the rest of the steps to finish.
1610 const jlong end = step_start_time_l + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR / 4;
1611 if (end <= now) {
1612 _step_did_timeout = true;
1613 interrupt_reporting_thread();
1614 return false; // (Not a global timeout)
1615 }
1616 }
1617
1618 return false;
1619
1620 }
1621
1622 #ifndef PRODUCT
1623 typedef void (*voidfun_t)();
1624 // Crash with an authentic sigfpe
1625 static void crash_with_sigfpe() {
1626 // generate a native synchronous SIGFPE where possible;
1627 // if that did not cause a signal (e.g. on ppc), just
1628 // raise the signal.
1629 volatile int x = 0;
1630 volatile int y = 1/x;
1631 #ifndef _WIN32
1632 // OSX implements raise(sig) incorrectly so we need to
1633 // explicitly target the current thread
1634 pthread_kill(pthread_self(), SIGFPE);
1635 #endif
1636 } // end: crash_with_sigfpe
1637
1638 // crash with sigsegv at non-null address.
1639 static void crash_with_segfault() {
1640
1641 char* const crash_addr = (char*) VMError::get_segfault_address();
1642 *crash_addr = 'X';
1643
1644 } // end: crash_with_segfault
1645
1646 void VMError::test_error_handler() {
1647 controlled_crash(ErrorHandlerTest);
1648 }
1649
1650 // crash in a controlled way:
1651 // how can be one of:
1652 // 1,2 - asserts
1653 // 3,4 - guarantee
1654 // 5-7 - fatal
1655 // 8 - vm_exit_out_of_memory
1656 // 9 - ShouldNotCallThis
1657 // 10 - ShouldNotReachHere
1658 // 11 - Unimplemented
1659 // 12,13 - (not guaranteed) crashes
1660 // 14 - SIGSEGV
1661 // 15 - SIGFPE
1662 void VMError::controlled_crash(int how) {
1663 if (how == 0) return;
1664
1665 // If asserts are disabled, use the corresponding guarantee instead.
1666 NOT_DEBUG(if (how <= 2) how += 2);
1667
1668 const char* const str = "hello";
1669 const size_t num = (size_t)os::vm_page_size();
1670
1671 const char* const eol = os::line_separator();
1672 const char* const msg = "this message should be truncated during formatting";
1673 char * const dataPtr = NULL; // bad data pointer
1674 const void (*funcPtr)(void) = (const void(*)()) 0xF; // bad function pointer
1675
1676 // Keep this in sync with test/hotspot/jtreg/runtime/ErrorHandling/ErrorHandler.java
1677 // which tests cases 1 thru 13.
1678 // Case 14 is tested by test/hotspot/jtreg/runtime/ErrorHandling/SafeFetchInErrorHandlingTest.java.
1679 // Case 15 is tested by test/hotspot/jtreg/runtime/ErrorHandling/SecondaryErrorTest.java.
1680 // Case 16 is tested by test/hotspot/jtreg/runtime/ErrorHandling/ThreadsListHandleInErrorHandlingTest.java.
1681 // Case 17 is tested by test/hotspot/jtreg/runtime/ErrorHandling/NestedThreadsListHandleInErrorHandlingTest.java.
1682 switch (how) {
1683 case 1: vmassert(str == NULL, "expected null"); break;
1684 case 2: vmassert(num == 1023 && *str == 'X',
1685 "num=" SIZE_FORMAT " str=\"%s\"", num, str); break;
1686 case 3: guarantee(str == NULL, "expected null"); break;
1687 case 4: guarantee(num == 1023 && *str == 'X',
1688 "num=" SIZE_FORMAT " str=\"%s\"", num, str); break;
1689 case 5: fatal("expected null"); break;
1690 case 6: fatal("num=" SIZE_FORMAT " str=\"%s\"", num, str); break;
1691 case 7: fatal("%s%s# %s%s# %s%s# %s%s# %s%s# "
1692 "%s%s# %s%s# %s%s# %s%s# %s%s# "
1693 "%s%s# %s%s# %s%s# %s%s# %s",
1694 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol,
1695 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol,
1696 msg, eol, msg, eol, msg, eol, msg, eol, msg); break;
1697 case 8: vm_exit_out_of_memory(num, OOM_MALLOC_ERROR, "ChunkPool::allocate"); break;
1698 case 9: ShouldNotCallThis(); break;
1699 case 10: ShouldNotReachHere(); break;
1700 case 11: Unimplemented(); break;
1701 // There's no guarantee the bad data pointer will crash us
1702 // so "break" out to the ShouldNotReachHere().
1703 case 12: *dataPtr = '\0'; break;
1704 // There's no guarantee the bad function pointer will crash us
1705 // so "break" out to the ShouldNotReachHere().
1706 case 13: (*funcPtr)(); break;
1707 case 14: crash_with_segfault(); break;
1708 case 15: crash_with_sigfpe(); break;
1709 case 16: {
1710 ThreadsListHandle tlh;
1711 fatal("Force crash with an active ThreadsListHandle.");
1712 }
1713 case 17: {
1714 ThreadsListHandle tlh;
1715 {
1716 ThreadsListHandle tlh2;
1717 fatal("Force crash with a nested ThreadsListHandle.");
1718 }
1719 }
1720
1721 default: tty->print_cr("ERROR: %d: unexpected test_num value.", how);
1722 }
1723 tty->print_cr("VMError::controlled_crash: survived intentional crash. Did you suppress the assert?");
1724 ShouldNotReachHere();
1725 }
1726 #endif // !PRODUCT
1727