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/collectedHeap.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 #if defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x5140
56 #pragma error_messages(off, SEC_NULL_PTR_DEREF)
57 #endif
58 #endif // PRODUCT
59
60 bool VMError::_error_reported = false;
61
62 // call this when the VM is dying--it might loosen some asserts
63 bool VMError::is_error_reported() { return _error_reported; }
64
65 // returns an address which is guaranteed to generate a SIGSEGV on read,
66 // for test purposes, which is not NULL and contains bits in every word
67 void* VMError::get_segfault_address() {
68 return (void*)
69 #ifdef _LP64
70 0xABC0000000000ABCULL;
71 #else
72 0x00000ABC;
73 #endif
74 }
75
76 // List of environment variables that should be reported in error log file.
77 const char *env_list[] = {
78 // All platforms
79 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
80 "JAVA_COMPILER", "PATH", "USERNAME",
81
82 // Env variables that are defined on Solaris/Linux/BSD
83 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
84 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
85
86 // defined on Linux
87 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
88
89 // defined on Darwin
90 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
91 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
92 "DYLD_INSERT_LIBRARIES",
93
94 // defined on Windows
95 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
96
97 (const char *)0
98 };
99
100 // A simple parser for -XX:OnError, usage:
101 // ptr = OnError;
102 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
103 // ... ...
104 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
105 if (ptr == NULL || *ptr == NULL) return NULL;
106
107 const char* cmd = *ptr;
108
109 // skip leading blanks or ';'
110 while (*cmd == ' ' || *cmd == ';') cmd++;
111
112 if (*cmd == '\0') return NULL;
113
114 const char * cmdend = cmd;
115 while (*cmdend != '\0' && *cmdend != ';') cmdend++;
116
117 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
118
119 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
120 return buf;
121 }
122
123 static void print_bug_submit_message(outputStream *out, Thread *thread) {
124 if (out == NULL) return;
125 out->print_raw_cr("# If you would like to submit a bug report, please visit:");
126 out->print_raw ("# ");
127 out->print_raw_cr(Arguments::java_vendor_url_bug());
128 // If the crash is in native code, encourage user to submit a bug to the
129 // provider of that code.
130 if (thread && thread->is_Java_thread() &&
131 !thread->is_hidden_from_external_view()) {
132 JavaThread* jt = (JavaThread*)thread;
133 if (jt->thread_state() == _thread_in_native) {
134 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
135 }
136 }
137 out->print_raw_cr("#");
138 }
139
140 bool VMError::coredump_status;
141 char VMError::coredump_message[O_BUFLEN];
142
143 void VMError::record_coredump_status(const char* message, bool status) {
144 coredump_status = status;
145 strncpy(coredump_message, message, sizeof(coredump_message));
146 coredump_message[sizeof(coredump_message)-1] = 0;
147 }
148
149 // Return a string to describe the error
150 char* VMError::error_string(char* buf, int buflen) {
151 char signame_buf[64];
152 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
153
154 if (signame) {
155 jio_snprintf(buf, buflen,
156 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT,
157 signame, _id, _pc,
158 os::current_process_id(), os::current_thread_id());
159 } else if (_filename != NULL && _lineno > 0) {
160 // skip directory names
161 char separator = os::file_separator()[0];
162 const char *p = strrchr(_filename, separator);
163 int n = jio_snprintf(buf, buflen,
164 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT,
165 p ? p + 1 : _filename, _lineno,
166 os::current_process_id(), os::current_thread_id());
167 if (n >= 0 && n < buflen && _message) {
168 if (strlen(_detail_msg) > 0) {
169 jio_snprintf(buf + n, buflen - n, "%s%s: %s",
170 os::line_separator(), _message, _detail_msg);
171 } else {
172 jio_snprintf(buf + n, buflen - n, "%sError: %s",
173 os::line_separator(), _message);
174 }
175 }
176 } else {
177 jio_snprintf(buf, buflen,
178 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT,
179 _id, os::current_process_id(), os::current_thread_id());
180 }
181
182 return buf;
183 }
184
185 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
186 char* buf, int buflen, bool verbose) {
187 #ifdef ZERO
188 if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
189 // StackFrameStream uses the frame anchor, which may not have
190 // been set up. This can be done at any time in Zero, however,
191 // so if it hasn't been set up then we just set it up now and
192 // clear it again when we're done.
193 bool has_last_Java_frame = jt->has_last_Java_frame();
194 if (!has_last_Java_frame)
195 jt->set_last_Java_frame();
196 st->print("Java frames:");
197 st->cr();
198
199 // Print the frames
200 StackFrameStream sfs(jt);
201 for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
202 sfs.current()->zero_print_on_error(i, st, buf, buflen);
203 st->cr();
204 }
205
206 // Reset the frame anchor if necessary
207 if (!has_last_Java_frame)
208 jt->reset_last_Java_frame();
209 }
210 #else
211 if (jt->has_last_Java_frame()) {
212 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
213 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
214 sfs.current()->print_on_error(st, buf, buflen, verbose);
215 st->cr();
216 }
217 }
218 #endif // ZERO
219 }
220
221 void VMError::print_native_stack(outputStream* st, frame fr, Thread* t, char* buf, int buf_size) {
222
223 // see if it's a valid frame
224 if (fr.pc()) {
225 st->print_cr("Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)");
226
227 int count = 0;
228 while (count++ < StackPrintLimit) {
229 fr.print_on_error(st, buf, buf_size);
230 if (fr.pc()) { // print source file and line, if available
231 char buf[128];
232 int line_no;
233 if (Decoder::get_source_info(fr.pc(), buf, sizeof(buf), &line_no)) {
234 st->print(" (%s:%d)", buf, line_no);
235 }
236 }
237 st->cr();
238 // Compiled code may use EBP register on x86 so it looks like
239 // non-walkable C frame. Use frame.sender() for java frames.
240 if (t && t->is_Java_thread()) {
241 // Catch very first native frame by using stack address.
242 // For JavaThread stack_base and stack_size should be set.
243 if (!t->on_local_stack((address)(fr.real_fp() + 1))) {
244 break;
245 }
246 if (fr.is_java_frame() || fr.is_native_frame() || fr.is_runtime_frame()) {
247 RegisterMap map((JavaThread*)t, false); // No update
248 fr = fr.sender(&map);
249 } else {
250 // is_first_C_frame() does only simple checks for frame pointer,
251 // it will pass if java compiled code has a pointer in EBP.
252 if (os::is_first_C_frame(&fr)) break;
253 fr = os::get_sender_for_C_frame(&fr);
254 }
255 } else {
256 if (os::is_first_C_frame(&fr)) break;
257 fr = os::get_sender_for_C_frame(&fr);
258 }
259 }
260
261 if (count > StackPrintLimit) {
262 st->print_cr("...<more frames>...");
263 }
264
265 st->cr();
266 }
267 }
268
269 static void print_oom_reasons(outputStream* st) {
270 st->print_cr("# Possible reasons:");
271 st->print_cr("# The system is out of physical RAM or swap space");
272 if (UseCompressedOops) {
273 st->print_cr("# The process is running with CompressedOops enabled, and the Java Heap may be blocking the growth of the native heap");
274 }
275 if (LogBytesPerWord == 2) {
276 st->print_cr("# In 32 bit mode, the process size limit was hit");
277 }
278 st->print_cr("# Possible solutions:");
279 st->print_cr("# Reduce memory load on the system");
280 st->print_cr("# Increase physical memory or swap space");
281 st->print_cr("# Check if swap backing store is full");
282 if (LogBytesPerWord == 2) {
283 st->print_cr("# Use 64 bit Java on a 64 bit OS");
284 }
285 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)");
286 st->print_cr("# Decrease number of Java threads");
287 st->print_cr("# Decrease Java thread stack sizes (-Xss)");
288 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize=");
289 if (UseCompressedOops) {
290 switch (Universe::narrow_oop_mode()) {
291 case Universe::UnscaledNarrowOop:
292 st->print_cr("# JVM is running with Unscaled Compressed Oops mode in which the Java heap is");
293 st->print_cr("# placed in the first 4GB address space. The Java Heap base address is the");
294 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
295 st->print_cr("# to set the Java Heap base and to place the Java Heap above 4GB virtual address.");
296 break;
297 case Universe::ZeroBasedNarrowOop:
298 st->print_cr("# JVM is running with Zero Based Compressed Oops mode in which the Java heap is");
299 st->print_cr("# placed in the first 32GB address space. The Java Heap base address is the");
300 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
301 st->print_cr("# to set the Java Heap base and to place the Java Heap above 32GB virtual address.");
302 break;
303 default:
304 break;
305 }
306 }
307 st->print_cr("# This output file may be truncated or incomplete.");
308 }
309
310 static const char* gc_mode() {
311 if (UseG1GC) return "g1 gc";
312 if (UseParallelGC) return "parallel gc";
313 if (UseConcMarkSweepGC) return "concurrent mark sweep gc";
314 if (UseSerialGC) return "serial gc";
315 return "ERROR in GC mode";
316 }
317
318 static void report_vm_version(outputStream* st, char* buf, int buflen) {
319 // VM version
320 st->print_cr("#");
321 JDK_Version::current().to_string(buf, buflen);
322 const char* runtime_name = JDK_Version::runtime_name() != NULL ?
323 JDK_Version::runtime_name() : "";
324 const char* runtime_version = JDK_Version::runtime_version() != NULL ?
325 JDK_Version::runtime_version() : "";
326 const char* jdk_debug_level = Abstract_VM_Version::printable_jdk_debug_level() != NULL ?
327 Abstract_VM_Version::printable_jdk_debug_level() : "";
328
329 st->print_cr("# JRE version: %s (%s) (%sbuild %s)", runtime_name, buf,
330 jdk_debug_level, runtime_version);
331
332 // This is the long version with some default settings added
333 st->print_cr("# Java VM: %s (%s%s, %s%s%s%s%s, %s, %s)",
334 Abstract_VM_Version::vm_name(),
335 jdk_debug_level,
336 Abstract_VM_Version::vm_release(),
337 Abstract_VM_Version::vm_info_string(),
338 TieredCompilation ? ", tiered" : "",
339 #if INCLUDE_JVMCI
340 EnableJVMCI ? ", jvmci" : "",
341 UseJVMCICompiler ? ", jvmci compiler" : "",
342 #else
343 "", "",
344 #endif
345 UseCompressedOops ? ", compressed oops" : "",
346 gc_mode(),
347 Abstract_VM_Version::vm_platform_string()
348 );
349 }
350
351 // This is the main function to report a fatal error. Only one thread can
352 // call this function, so we don't need to worry about MT-safety. But it's
353 // possible that the error handler itself may crash or die on an internal
354 // error, for example, when the stack/heap is badly damaged. We must be
355 // able to handle recursive errors that happen inside error handler.
356 //
357 // Error reporting is done in several steps. If a crash or internal error
358 // occurred when reporting an error, the nested signal/exception handler
359 // can skip steps that are already (or partially) done. Error reporting will
360 // continue from the next step. This allows us to retrieve and print
361 // information that may be unsafe to get after a fatal error. If it happens,
362 // you may find nested report_and_die() frames when you look at the stack
363 // in a debugger.
364 //
365 // In general, a hang in error handler is much worse than a crash or internal
366 // error, as it's harder to recover from a hang. Deadlock can happen if we
367 // try to grab a lock that is already owned by current thread, or if the
368 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
369 // error handler and all the functions it called should avoid grabbing any
370 // lock. An important thing to notice is that memory allocation needs a lock.
371 //
372 // We should avoid using large stack allocated buffers. Many errors happen
373 // when stack space is already low. Making things even worse is that there
374 // could be nested report_and_die() calls on stack (see above). Only one
375 // thread can report error, so large buffers are statically allocated in data
376 // segment.
377
378 int VMError::_current_step;
379 const char* VMError::_current_step_info;
380
381 volatile jlong VMError::_reporting_start_time = -1;
382 volatile bool VMError::_reporting_did_timeout = false;
383 volatile jlong VMError::_step_start_time = -1;
384 volatile bool VMError::_step_did_timeout = false;
385
386 // Helper, return current timestamp for timeout handling.
387 jlong VMError::get_current_timestamp() {
388 return os::javaTimeNanos();
389 }
390 // Factor to translate the timestamp to seconds.
391 #define TIMESTAMP_TO_SECONDS_FACTOR (1000 * 1000 * 1000)
392
393 void VMError::record_reporting_start_time() {
394 const jlong now = get_current_timestamp();
395 Atomic::store(now, &_reporting_start_time);
396 }
397
398 jlong VMError::get_reporting_start_time() {
399 return Atomic::load(&_reporting_start_time);
400 }
401
402 void VMError::record_step_start_time() {
403 const jlong now = get_current_timestamp();
404 Atomic::store(now, &_step_start_time);
405 }
406
407 jlong VMError::get_step_start_time() {
408 return Atomic::load(&_step_start_time);
409 }
410
411 void VMError::report(outputStream* st, bool _verbose) {
412
413 # define BEGIN if (_current_step == 0) { _current_step = __LINE__;
414 # define STEP(s) } if (_current_step < __LINE__) { _current_step = __LINE__; _current_step_info = s; \
415 record_step_start_time(); _step_did_timeout = false;
416 # define END }
417
418 // don't allocate large buffer on stack
419 static char buf[O_BUFLEN];
420
421 BEGIN
422
423 STEP("printing fatal error message")
424
425 st->print_cr("#");
426 if (should_report_bug(_id)) {
427 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
428 } else {
429 st->print_cr("# There is insufficient memory for the Java "
430 "Runtime Environment to continue.");
431 }
432
433 #ifndef PRODUCT
434 // Error handler self tests
435
436 // test secondary error handling. Test it twice, to test that resetting
437 // error handler after a secondary crash works.
438 STEP("test secondary crash 1")
439 if (_verbose && TestCrashInErrorHandler != 0) {
440 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
441 TestCrashInErrorHandler);
442 controlled_crash(TestCrashInErrorHandler);
443 }
444
445 STEP("test secondary crash 2")
446 if (_verbose && TestCrashInErrorHandler != 0) {
447 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
448 TestCrashInErrorHandler);
449 controlled_crash(TestCrashInErrorHandler);
450 }
451
452 // TestUnresponsiveErrorHandler: We want to test both step timeouts and global timeout.
453 // Step to global timeout ratio is 4:1, so in order to be absolutely sure we hit the
454 // global timeout, let's execute the timeout step five times.
455 // See corresponding test in test/runtime/ErrorHandling/TimeoutInErrorHandlingTest.java
456 #define TIMEOUT_TEST_STEP STEP("test unresponsive error reporting step") \
457 if (_verbose && TestUnresponsiveErrorHandler) { os::infinite_sleep(); }
458 TIMEOUT_TEST_STEP
459 TIMEOUT_TEST_STEP
460 TIMEOUT_TEST_STEP
461 TIMEOUT_TEST_STEP
462 TIMEOUT_TEST_STEP
463
464 STEP("test safefetch in error handler")
465 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice
466 // to test that resetting the signal handler works correctly.
467 if (_verbose && TestSafeFetchInErrorHandler) {
468 st->print_cr("Will test SafeFetch...");
469 if (CanUseSafeFetch32()) {
470 int* const invalid_pointer = (int*) get_segfault_address();
471 const int x = 0x76543210;
472 int i1 = SafeFetch32(invalid_pointer, x);
473 int i2 = SafeFetch32(invalid_pointer, x);
474 if (i1 == x && i2 == x) {
475 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern
476 } else {
477 st->print_cr("??");
478 }
479 } else {
480 st->print_cr("not possible; skipped.");
481 }
482 }
483 #endif // PRODUCT
484
485 STEP("printing type of error")
486
487 switch(static_cast<unsigned int>(_id)) {
488 case OOM_MALLOC_ERROR:
489 case OOM_MMAP_ERROR:
490 if (_size) {
491 st->print("# Native memory allocation ");
492 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
493 "(mmap) failed to map ");
494 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
495 st->print("%s", buf);
496 st->print(" bytes");
497 if (strlen(_detail_msg) > 0) {
498 st->print(" for ");
499 st->print("%s", _detail_msg);
500 }
501 st->cr();
502 } else {
503 if (strlen(_detail_msg) > 0) {
504 st->print("# ");
505 st->print_cr("%s", _detail_msg);
506 }
507 }
508 // In error file give some solutions
509 if (_verbose) {
510 print_oom_reasons(st);
511 } else {
512 return; // that's enough for the screen
513 }
514 break;
515 case INTERNAL_ERROR:
516 default:
517 break;
518 }
519
520 STEP("printing exception/signal name")
521
522 st->print_cr("#");
523 st->print("# ");
524 // Is it an OS exception/signal?
525 if (os::exception_name(_id, buf, sizeof(buf))) {
526 st->print("%s", buf);
527 st->print(" (0x%x)", _id); // signal number
528 st->print(" at pc=" PTR_FORMAT, p2i(_pc));
529 } else {
530 if (should_report_bug(_id)) {
531 st->print("Internal Error");
532 } else {
533 st->print("Out of Memory Error");
534 }
535 if (_filename != NULL && _lineno > 0) {
536 #ifdef PRODUCT
537 // In product mode chop off pathname?
538 char separator = os::file_separator()[0];
539 const char *p = strrchr(_filename, separator);
540 const char *file = p ? p+1 : _filename;
541 #else
542 const char *file = _filename;
543 #endif
544 st->print(" (%s:%d)", file, _lineno);
545 } else {
546 st->print(" (0x%x)", _id);
547 }
548 }
549
550 STEP("printing current thread and pid")
551
552 // process id, thread id
553 st->print(", pid=%d", os::current_process_id());
554 st->print(", tid=" UINTX_FORMAT, os::current_thread_id());
555 st->cr();
556
557 STEP("printing error message")
558
559 if (should_report_bug(_id)) { // already printed the message.
560 // error message
561 if (strlen(_detail_msg) > 0) {
562 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg);
563 } else if (_message) {
564 st->print_cr("# Error: %s", _message);
565 }
566 }
567
568 STEP("printing Java version string")
569
570 report_vm_version(st, buf, sizeof(buf));
571
572 STEP("printing problematic frame")
573
574 // Print current frame if we have a context (i.e. it's a crash)
575 if (_context) {
576 st->print_cr("# Problematic frame:");
577 st->print("# ");
578 frame fr = os::fetch_frame_from_context(_context);
579 fr.print_on_error(st, buf, sizeof(buf));
580 st->cr();
581 st->print_cr("#");
582 }
583
584 STEP("printing core file information")
585 st->print("# ");
586 if (CreateCoredumpOnCrash) {
587 if (coredump_status) {
588 st->print("Core dump will be written. Default location: %s", coredump_message);
589 } else {
590 st->print("No core dump will be written. %s", coredump_message);
591 }
592 } else {
593 st->print("CreateCoredumpOnCrash turned off, no core file dumped");
594 }
595 st->cr();
596 st->print_cr("#");
597
598 STEP("printing bug submit message")
599
600 if (should_report_bug(_id) && _verbose) {
601 print_bug_submit_message(st, _thread);
602 }
603
604 STEP("printing summary")
605
606 if (_verbose) {
607 st->cr();
608 st->print_cr("--------------- S U M M A R Y ------------");
609 st->cr();
610 }
611
612 STEP("printing VM option summary")
613
614 if (_verbose) {
615 // VM options
616 Arguments::print_summary_on(st);
617 st->cr();
618 }
619
620 STEP("printing summary machine and OS info")
621
622 if (_verbose) {
623 os::print_summary_info(st, buf, sizeof(buf));
624 }
625
626
627 STEP("printing date and time")
628
629 if (_verbose) {
630 os::print_date_and_time(st, buf, sizeof(buf));
631 }
632
633 STEP("printing thread")
634
635 if (_verbose) {
636 st->cr();
637 st->print_cr("--------------- T H R E A D ---------------");
638 st->cr();
639 }
640
641 STEP("printing current thread")
642
643 // current thread
644 if (_verbose) {
645 if (_thread) {
646 st->print("Current thread (" PTR_FORMAT "): ", p2i(_thread));
647 _thread->print_on_error(st, buf, sizeof(buf));
648 st->cr();
649 } else {
650 st->print_cr("Current thread is native thread");
651 }
652 st->cr();
653 }
654
655 STEP("printing current compile task")
656
657 if (_verbose && _thread && _thread->is_Compiler_thread()) {
658 CompilerThread* t = (CompilerThread*)_thread;
659 if (t->task()) {
660 st->cr();
661 st->print_cr("Current CompileTask:");
662 t->task()->print_line_on_error(st, buf, sizeof(buf));
663 st->cr();
664 }
665 }
666
667
668 STEP("printing stack bounds")
669
670 if (_verbose) {
671 st->print("Stack: ");
672
673 address stack_top;
674 size_t stack_size;
675
676 if (_thread) {
677 stack_top = _thread->stack_base();
678 stack_size = _thread->stack_size();
679 } else {
680 stack_top = os::current_stack_base();
681 stack_size = os::current_stack_size();
682 }
683
684 address stack_bottom = stack_top - stack_size;
685 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", p2i(stack_bottom), p2i(stack_top));
686
687 frame fr = _context ? os::fetch_frame_from_context(_context)
688 : os::current_frame();
689
690 if (fr.sp()) {
691 st->print(", sp=" PTR_FORMAT, p2i(fr.sp()));
692 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
693 st->print(", free space=" SIZE_FORMAT "k", free_stack_size);
694 }
695
696 st->cr();
697 }
698
699 STEP("printing native stack")
700
701 if (_verbose) {
702 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
703 // We have printed the native stack in platform-specific code
704 // Windows/x64 needs special handling.
705 } else {
706 frame fr = _context ? os::fetch_frame_from_context(_context)
707 : os::current_frame();
708
709 print_native_stack(st, fr, _thread, buf, sizeof(buf));
710 }
711 }
712
713 STEP("printing Java stack")
714
715 if (_verbose && _thread && _thread->is_Java_thread()) {
716 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
717 }
718
719 STEP("printing target Java thread stack")
720
721 // printing Java thread stack trace if it is involved in GC crash
722 if (_verbose && _thread && (_thread->is_Named_thread())) {
723 JavaThread* jt = ((NamedThread *)_thread)->processed_thread();
724 if (jt != NULL) {
725 st->print_cr("JavaThread " PTR_FORMAT " (nid = %d) was being processed", p2i(jt), jt->osthread()->thread_id());
726 print_stack_trace(st, jt, buf, sizeof(buf), true);
727 }
728 }
729
730 STEP("printing siginfo")
731
732 // signal no, signal code, address that caused the fault
733 if (_verbose && _siginfo) {
734 st->cr();
735 os::print_siginfo(st, _siginfo);
736 st->cr();
737 }
738
739 STEP("CDS archive access warning")
740
741 // Print an explicit hint if we crashed on access to the CDS archive.
742 if (_verbose && _siginfo) {
743 check_failing_cds_access(st, _siginfo);
744 st->cr();
745 }
746
747 STEP("printing register info")
748
749 // decode register contents if possible
750 if (_verbose && _context && Universe::is_fully_initialized()) {
751 os::print_register_info(st, _context);
752 st->cr();
753 }
754
755 STEP("printing registers, top of stack, instructions near pc")
756
757 // registers, top of stack, instructions near pc
758 if (_verbose && _context) {
759 os::print_context(st, _context);
760 st->cr();
761 }
762
763 STEP("printing code blob if possible")
764
765 if (_verbose && _context) {
766 CodeBlob* cb = CodeCache::find_blob(_pc);
767 if (cb != NULL) {
768 if (Interpreter::contains(_pc)) {
769 // The interpreter CodeBlob is very large so try to print the codelet instead.
770 InterpreterCodelet* codelet = Interpreter::codelet_containing(_pc);
771 if (codelet != NULL) {
772 codelet->print_on(st);
773 Disassembler::decode(codelet->code_begin(), codelet->code_end(), st);
774 }
775 } else {
776 StubCodeDesc* desc = StubCodeDesc::desc_for(_pc);
777 if (desc != NULL) {
778 desc->print_on(st);
779 Disassembler::decode(desc->begin(), desc->end(), st);
780 } else if (_thread != NULL) {
781 // Disassembling nmethod will incur resource memory allocation,
782 // only do so when thread is valid.
783 ResourceMark rm(_thread);
784 Disassembler::decode(cb, st);
785 st->cr();
786 }
787 }
788 }
789 }
790
791 STEP("printing VM operation")
792
793 if (_verbose && _thread && _thread->is_VM_thread()) {
794 VMThread* t = (VMThread*)_thread;
795 VM_Operation* op = t->vm_operation();
796 if (op) {
797 op->print_on_error(st);
798 st->cr();
799 st->cr();
800 }
801 }
802
803 STEP("printing process")
804
805 if (_verbose) {
806 st->cr();
807 st->print_cr("--------------- P R O C E S S ---------------");
808 st->cr();
809 }
810
811 STEP("printing all threads")
812
813 // all threads
814 if (_verbose && _thread) {
815 Threads::print_on_error(st, _thread, buf, sizeof(buf));
816 st->cr();
817 }
818
819 STEP("printing VM state")
820
821 if (_verbose) {
822 // Safepoint state
823 st->print("VM state:");
824
825 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
826 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
827 else st->print("not at safepoint");
828
829 // Also see if error occurred during initialization or shutdown
830 if (!Universe::is_fully_initialized()) {
831 st->print(" (not fully initialized)");
832 } else if (VM_Exit::vm_exited()) {
833 st->print(" (shutting down)");
834 } else {
835 st->print(" (normal execution)");
836 }
837 st->cr();
838 st->cr();
839 }
840
841 STEP("printing owned locks on error")
842
843 // mutexes/monitors that currently have an owner
844 if (_verbose) {
845 print_owned_locks_on_error(st);
846 st->cr();
847 }
848
849 STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
850
851 if (_verbose && Exceptions::has_exception_counts()) {
852 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
853 Exceptions::print_exception_counts_on_error(st);
854 st->cr();
855 }
856
857 STEP("printing compressed oops mode")
858
859 if (_verbose && UseCompressedOops) {
860 Universe::print_compressed_oops_mode(st);
861 if (UseCompressedClassPointers) {
862 Metaspace::print_compressed_class_space(st);
863 }
864 st->cr();
865 }
866
867 STEP("printing heap information")
868
869 if (_verbose && Universe::is_fully_initialized()) {
870 Universe::heap()->print_on_error(st);
871 st->cr();
872 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page()));
873 st->cr();
874 }
875
876 STEP("printing code cache information")
877
878 if (_verbose && Universe::is_fully_initialized()) {
879 // print code cache information before vm abort
880 CodeCache::print_summary(st);
881 st->cr();
882 }
883
884 STEP("printing ring buffers")
885
886 if (_verbose) {
887 Events::print_all(st);
888 st->cr();
889 }
890
891 STEP("printing dynamic libraries")
892
893 if (_verbose) {
894 // dynamic libraries, or memory map
895 os::print_dll_info(st);
896 st->cr();
897 }
898
899 STEP("printing native decoder state")
900
901 if (_verbose) {
902 Decoder::print_state_on(st);
903 st->cr();
904 }
905
906 STEP("printing VM options")
907
908 if (_verbose) {
909 // VM options
910 Arguments::print_on(st);
911 st->cr();
912 }
913
914 STEP("printing warning if internal testing API used")
915
916 if (WhiteBox::used()) {
917 st->print_cr("Unsupported internal testing APIs have been used.");
918 st->cr();
919 }
920
921 STEP("printing log configuration")
922 if (_verbose){
923 st->print_cr("Logging:");
924 LogConfiguration::describe_current_configuration(st);
925 st->cr();
926 }
927
928 STEP("printing all environment variables")
929
930 if (_verbose) {
931 os::print_environment_variables(st, env_list);
932 st->cr();
933 }
934
935 STEP("printing signal handlers")
936
937 if (_verbose) {
938 os::print_signal_handlers(st, buf, sizeof(buf));
939 st->cr();
940 }
941
942 STEP("Native Memory Tracking")
943 if (_verbose) {
944 MemTracker::error_report(st);
945 }
946
947 STEP("printing system")
948
949 if (_verbose) {
950 st->cr();
951 st->print_cr("--------------- S Y S T E M ---------------");
952 st->cr();
953 }
954
955 STEP("printing OS information")
956
957 if (_verbose) {
958 os::print_os_info(st);
959 st->cr();
960 }
961
962 STEP("printing CPU info")
963 if (_verbose) {
964 os::print_cpu_info(st, buf, sizeof(buf));
965 st->cr();
966 }
967
968 STEP("printing memory info")
969
970 if (_verbose) {
971 os::print_memory_info(st);
972 st->cr();
973 }
974
975 STEP("printing internal vm info")
976
977 if (_verbose) {
978 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
979 st->cr();
980 }
981
982 // print a defined marker to show that error handling finished correctly.
983 STEP("printing end marker")
984
985 if (_verbose) {
986 st->print_cr("END.");
987 }
988
989 END
990
991 # undef BEGIN
992 # undef STEP
993 # undef END
994 }
995
996 // Report for the vm_info_cmd. This prints out the information above omitting
997 // crash and thread specific information. If output is added above, it should be added
998 // here also, if it is safe to call during a running process.
999 void VMError::print_vm_info(outputStream* st) {
1000
1001 char buf[O_BUFLEN];
1002 report_vm_version(st, buf, sizeof(buf));
1003
1004 // STEP("printing summary")
1005
1006 st->cr();
1007 st->print_cr("--------------- S U M M A R Y ------------");
1008 st->cr();
1009
1010 // STEP("printing VM option summary")
1011
1012 // VM options
1013 Arguments::print_summary_on(st);
1014 st->cr();
1015
1016 // STEP("printing summary machine and OS info")
1017
1018 os::print_summary_info(st, buf, sizeof(buf));
1019
1020 // STEP("printing date and time")
1021
1022 os::print_date_and_time(st, buf, sizeof(buf));
1023
1024 // Skip: STEP("printing thread")
1025
1026 // STEP("printing process")
1027
1028 st->cr();
1029 st->print_cr("--------------- P R O C E S S ---------------");
1030 st->cr();
1031
1032 // STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
1033
1034 if (Exceptions::has_exception_counts()) {
1035 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
1036 Exceptions::print_exception_counts_on_error(st);
1037 st->cr();
1038 }
1039
1040 // STEP("printing compressed oops mode")
1041
1042 if (UseCompressedOops) {
1043 Universe::print_compressed_oops_mode(st);
1044 if (UseCompressedClassPointers) {
1045 Metaspace::print_compressed_class_space(st);
1046 }
1047 st->cr();
1048 }
1049
1050 // STEP("printing heap information")
1051
1052 if (Universe::is_fully_initialized()) {
1053 MutexLocker hl(Heap_lock);
1054 Universe::heap()->print_on_error(st);
1055 st->cr();
1056 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page()));
1057 st->cr();
1058 }
1059
1060 // STEP("printing code cache information")
1061
1062 if (Universe::is_fully_initialized()) {
1063 // print code cache information before vm abort
1064 CodeCache::print_summary(st);
1065 st->cr();
1066 }
1067
1068 // STEP("printing ring buffers")
1069
1070 Events::print_all(st);
1071 st->cr();
1072
1073 // STEP("printing dynamic libraries")
1074
1075 // dynamic libraries, or memory map
1076 os::print_dll_info(st);
1077 st->cr();
1078
1079 // STEP("printing VM options")
1080
1081 // VM options
1082 Arguments::print_on(st);
1083 st->cr();
1084
1085 // STEP("printing warning if internal testing API used")
1086
1087 if (WhiteBox::used()) {
1088 st->print_cr("Unsupported internal testing APIs have been used.");
1089 st->cr();
1090 }
1091
1092 // STEP("printing log configuration")
1093 st->print_cr("Logging:");
1094 LogConfiguration::describe(st);
1095 st->cr();
1096
1097 // STEP("printing all environment variables")
1098
1099 os::print_environment_variables(st, env_list);
1100 st->cr();
1101
1102 // STEP("printing signal handlers")
1103
1104 os::print_signal_handlers(st, buf, sizeof(buf));
1105 st->cr();
1106
1107 // STEP("Native Memory Tracking")
1108
1109 MemTracker::error_report(st);
1110
1111 // STEP("printing system")
1112
1113 st->cr();
1114 st->print_cr("--------------- S Y S T E M ---------------");
1115 st->cr();
1116
1117 // STEP("printing OS information")
1118
1119 os::print_os_info(st);
1120 st->cr();
1121
1122 // STEP("printing CPU info")
1123
1124 os::print_cpu_info(st, buf, sizeof(buf));
1125 st->cr();
1126
1127 // STEP("printing memory info")
1128
1129 os::print_memory_info(st);
1130 st->cr();
1131
1132 // STEP("printing internal vm info")
1133
1134 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
1135 st->cr();
1136
1137 // print a defined marker to show that error handling finished correctly.
1138 // STEP("printing end marker")
1139
1140 st->print_cr("END.");
1141 }
1142
1143 volatile intptr_t VMError::first_error_tid = -1;
1144
1145 // An error could happen before tty is initialized or after it has been
1146 // destroyed.
1147 // Please note: to prevent large stack allocations, the log- and
1148 // output-stream use a global scratch buffer for format printing.
1149 // (see VmError::report_and_die(). Access to those streams is synchronized
1150 // in VmError::report_and_die() - there is only one reporting thread at
1151 // any given time.
1152 fdStream VMError::out(defaultStream::output_fd());
1153 fdStream VMError::log; // error log used by VMError::report_and_die()
1154
1155 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
1156 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
1157 int fd = -1;
1158 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
1159 // the O_EXCL flag will cause the open to fail if the file exists
1160 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666);
1161 }
1162 return fd;
1163 }
1164
1165 /**
1166 * Construct file name for a log file and return it's file descriptor.
1167 * Name and location depends on pattern, default_pattern params and access
1168 * permissions.
1169 */
1170 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) {
1171 int fd = -1;
1172
1173 // If possible, use specified pattern to construct log file name
1174 if (pattern != NULL) {
1175 fd = expand_and_open(pattern, buf, buflen, 0);
1176 }
1177
1178 // Either user didn't specify, or the user's location failed,
1179 // so use the default name in the current directory
1180 if (fd == -1) {
1181 const char* cwd = os::get_current_directory(buf, buflen);
1182 if (cwd != NULL) {
1183 size_t pos = strlen(cwd);
1184 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
1185 pos += fsep_len;
1186 if (fsep_len > 0) {
1187 fd = expand_and_open(default_pattern, buf, buflen, pos);
1188 }
1189 }
1190 }
1191
1192 // try temp directory if it exists.
1193 if (fd == -1) {
1194 const char* tmpdir = os::get_temp_directory();
1195 if (tmpdir != NULL && strlen(tmpdir) > 0) {
1196 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
1197 if (pos > 0) {
1198 fd = expand_and_open(default_pattern, buf, buflen, pos);
1199 }
1200 }
1201 }
1202
1203 return fd;
1204 }
1205
1206 int VMError::_id;
1207 const char* VMError::_message;
1208 char VMError::_detail_msg[1024];
1209 Thread* VMError::_thread;
1210 address VMError::_pc;
1211 void* VMError::_siginfo;
1212 void* VMError::_context;
1213 const char* VMError::_filename;
1214 int VMError::_lineno;
1215 size_t VMError::_size;
1216
1217 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo,
1218 void* context, const char* detail_fmt, ...)
1219 {
1220 va_list detail_args;
1221 va_start(detail_args, detail_fmt);
1222 report_and_die(sig, NULL, detail_fmt, detail_args, thread, pc, siginfo, context, NULL, 0, 0);
1223 va_end(detail_args);
1224 }
1225
1226 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context)
1227 {
1228 report_and_die(thread, sig, pc, siginfo, context, "%s", "");
1229 }
1230
1231 void VMError::report_and_die(const char* message, const char* detail_fmt, ...)
1232 {
1233 va_list detail_args;
1234 va_start(detail_args, detail_fmt);
1235 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, NULL, NULL, NULL, NULL, NULL, 0, 0);
1236 va_end(detail_args);
1237 }
1238
1239 void VMError::report_and_die(const char* message)
1240 {
1241 report_and_die(message, "%s", "");
1242 }
1243
1244 void VMError::report_and_die(Thread* thread, void* context, const char* filename, int lineno, const char* message,
1245 const char* detail_fmt, va_list detail_args)
1246 {
1247 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, thread, NULL, NULL, context, filename, lineno, 0);
1248 }
1249
1250 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, size_t size,
1251 VMErrorType vm_err_type, const char* detail_fmt, va_list detail_args) {
1252 report_and_die(vm_err_type, NULL, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, size);
1253 }
1254
1255 void VMError::report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args,
1256 Thread* thread, address pc, void* siginfo, void* context, const char* filename,
1257 int lineno, size_t size)
1258 {
1259 // Don't allocate large buffer on stack
1260 static char buffer[O_BUFLEN];
1261 out.set_scratch_buffer(buffer, sizeof(buffer));
1262 log.set_scratch_buffer(buffer, sizeof(buffer));
1263
1264 // How many errors occurred in error handler when reporting first_error.
1265 static int recursive_error_count;
1266
1267 // We will first print a brief message to standard out (verbose = false),
1268 // then save detailed information in log file (verbose = true).
1269 static bool out_done = false; // done printing to standard out
1270 static bool log_done = false; // done saving error log
1271 static bool transmit_report_done = false; // done error reporting
1272
1273 if (SuppressFatalErrorMessage) {
1274 os::abort(CreateCoredumpOnCrash);
1275 }
1276 intptr_t mytid = os::current_thread_id();
1277 if (first_error_tid == -1 &&
1278 Atomic::cmpxchg(mytid, &first_error_tid, (intptr_t)-1) == -1) {
1279
1280 // Initialize time stamps to use the same base.
1281 out.time_stamp().update_to(1);
1282 log.time_stamp().update_to(1);
1283
1284 _id = id;
1285 _message = message;
1286 _thread = thread;
1287 _pc = pc;
1288 _siginfo = siginfo;
1289 _context = context;
1290 _filename = filename;
1291 _lineno = lineno;
1292 _size = size;
1293 jio_vsnprintf(_detail_msg, sizeof(_detail_msg), detail_fmt, detail_args);
1294
1295 // first time
1296 _error_reported = true;
1297
1298 reporting_started();
1299 record_reporting_start_time();
1300
1301 if (ShowMessageBoxOnError || PauseAtExit) {
1302 show_message_box(buffer, sizeof(buffer));
1303
1304 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
1305 // WatcherThread can kill JVM if the error handler hangs.
1306 ShowMessageBoxOnError = false;
1307 }
1308
1309 os::check_dump_limit(buffer, sizeof(buffer));
1310
1311 // reset signal handlers or exception filter; make sure recursive crashes
1312 // are handled properly.
1313 reset_signal_handlers();
1314
1315 EventShutdown e;
1316 if (e.should_commit()) {
1317 e.set_reason("VM Error");
1318 e.commit();
1319 }
1320
1321 TRACE_VM_ERROR();
1322
1323 } else {
1324 // If UseOsErrorReporting we call this for each level of the call stack
1325 // while searching for the exception handler. Only the first level needs
1326 // to be reported.
1327 if (UseOSErrorReporting && log_done) return;
1328
1329 // This is not the first error, see if it happened in a different thread
1330 // or in the same thread during error reporting.
1331 if (first_error_tid != mytid) {
1332 char msgbuf[64];
1333 jio_snprintf(msgbuf, sizeof(msgbuf),
1334 "[thread " INTX_FORMAT " also had an error]",
1335 mytid);
1336 out.print_raw_cr(msgbuf);
1337
1338 // error reporting is not MT-safe, block current thread
1339 os::infinite_sleep();
1340
1341 } else {
1342 if (recursive_error_count++ > 30) {
1343 out.print_raw_cr("[Too many errors, abort]");
1344 os::die();
1345 }
1346
1347 outputStream* const st = log.is_open() ? &log : &out;
1348 st->cr();
1349
1350 // Timeout handling.
1351 if (_step_did_timeout) {
1352 // The current step had a timeout. Lets continue reporting with the next step.
1353 st->print_raw("[timeout occurred during error reporting in step \"");
1354 st->print_raw(_current_step_info);
1355 st->print_cr("\"] after " INT64_FORMAT " s.",
1356 (int64_t)
1357 ((get_current_timestamp() - _step_start_time) / TIMESTAMP_TO_SECONDS_FACTOR));
1358 } else if (_reporting_did_timeout) {
1359 // We hit ErrorLogTimeout. Reporting will stop altogether. Let's wrap things
1360 // up, the process is about to be stopped by the WatcherThread.
1361 st->print_cr("------ Timeout during error reporting after " INT64_FORMAT " s. ------",
1362 (int64_t)
1363 ((get_current_timestamp() - _reporting_start_time) / TIMESTAMP_TO_SECONDS_FACTOR));
1364 st->flush();
1365 // Watcherthread is about to call os::die. Lets just wait.
1366 os::infinite_sleep();
1367 } else {
1368 // Crash or assert during error reporting. Lets continue reporting with the next step.
1369 jio_snprintf(buffer, sizeof(buffer),
1370 "[error occurred during error reporting (%s), id 0x%x]",
1371 _current_step_info, _id);
1372 st->print_raw_cr(buffer);
1373 st->cr();
1374 }
1375 }
1376 }
1377
1378 // print to screen
1379 if (!out_done) {
1380 report(&out, false);
1381
1382 out_done = true;
1383
1384 _current_step = 0;
1385 _current_step_info = "";
1386 }
1387
1388 // print to error log file
1389 if (!log_done) {
1390 // see if log file is already open
1391 if (!log.is_open()) {
1392 // open log file
1393 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer));
1394 if (fd != -1) {
1395 out.print_raw("# An error report file with more information is saved as:\n# ");
1396 out.print_raw_cr(buffer);
1397
1398 log.set_fd(fd);
1399 } else {
1400 out.print_raw_cr("# Can not save log file, dump to screen..");
1401 log.set_fd(defaultStream::output_fd());
1402 /* Error reporting currently needs dumpfile.
1403 * Maybe implement direct streaming in the future.*/
1404 transmit_report_done = true;
1405 }
1406 }
1407
1408 report(&log, true);
1409 log_done = true;
1410 _current_step = 0;
1411 _current_step_info = "";
1412
1413 // Run error reporting to determine whether or not to report the crash.
1414 if (!transmit_report_done && should_report_bug(_id)) {
1415 transmit_report_done = true;
1416 const int fd2 = ::dup(log.fd());
1417 if (fd2 != -1) {
1418 FILE* const hs_err = ::fdopen(fd2, "r");
1419 if (NULL != hs_err) {
1420 ErrorReporter er;
1421 er.call(hs_err, buffer, O_BUFLEN);
1422 ::fclose(hs_err);
1423 }
1424 }
1425 }
1426
1427 if (log.fd() != defaultStream::output_fd()) {
1428 close(log.fd());
1429 }
1430
1431 log.set_fd(-1);
1432 }
1433
1434 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay
1435 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1436 skip_replay = true;
1437 ciEnv* env = ciEnv::current();
1438 if (env != NULL) {
1439 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer));
1440 if (fd != -1) {
1441 FILE* replay_data_file = os::open(fd, "w");
1442 if (replay_data_file != NULL) {
1443 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1444 env->dump_replay_data_unsafe(&replay_data_stream);
1445 out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1446 out.print_raw_cr(buffer);
1447 } else {
1448 int e = errno;
1449 out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1450 out.print_raw_cr(os::strerror(e));
1451 }
1452 }
1453 }
1454 }
1455
1456 static bool skip_bug_url = !should_report_bug(_id);
1457 if (!skip_bug_url) {
1458 skip_bug_url = true;
1459
1460 out.print_raw_cr("#");
1461 print_bug_submit_message(&out, _thread);
1462 }
1463
1464 static bool skip_OnError = false;
1465 if (!skip_OnError && OnError && OnError[0]) {
1466 skip_OnError = true;
1467
1468 // Flush output and finish logs before running OnError commands.
1469 ostream_abort();
1470
1471 out.print_raw_cr("#");
1472 out.print_raw ("# -XX:OnError=\"");
1473 out.print_raw (OnError);
1474 out.print_raw_cr("\"");
1475
1476 char* cmd;
1477 const char* ptr = OnError;
1478 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1479 out.print_raw ("# Executing ");
1480 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1481 out.print_raw ("/bin/sh -c ");
1482 #elif defined(SOLARIS)
1483 out.print_raw ("/usr/bin/sh -c ");
1484 #elif defined(_WINDOWS)
1485 out.print_raw ("cmd /C ");
1486 #endif
1487 out.print_raw ("\"");
1488 out.print_raw (cmd);
1489 out.print_raw_cr("\" ...");
1490
1491 if (os::fork_and_exec(cmd) < 0) {
1492 out.print_cr("os::fork_and_exec failed: %s (%s=%d)",
1493 os::strerror(errno), os::errno_name(errno), errno);
1494 }
1495 }
1496
1497 // done with OnError
1498 OnError = NULL;
1499 }
1500
1501 if (!UseOSErrorReporting) {
1502 // os::abort() will call abort hooks, try it first.
1503 static bool skip_os_abort = false;
1504 if (!skip_os_abort) {
1505 skip_os_abort = true;
1506 bool dump_core = should_report_bug(_id);
1507 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context);
1508 }
1509
1510 // if os::abort() doesn't abort, try os::die();
1511 os::die();
1512 }
1513 }
1514
1515 /*
1516 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1517 * ensures utilities such as jmap can observe the process is a consistent state.
1518 */
1519 class VM_ReportJavaOutOfMemory : public VM_Operation {
1520 private:
1521 const char* _message;
1522 public:
1523 VM_ReportJavaOutOfMemory(const char* message) { _message = message; }
1524 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
1525 void doit();
1526 };
1527
1528 void VM_ReportJavaOutOfMemory::doit() {
1529 // Don't allocate large buffer on stack
1530 static char buffer[O_BUFLEN];
1531
1532 tty->print_cr("#");
1533 tty->print_cr("# java.lang.OutOfMemoryError: %s", _message);
1534 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1535
1536 // make heap parsability
1537 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
1538
1539 char* cmd;
1540 const char* ptr = OnOutOfMemoryError;
1541 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1542 tty->print("# Executing ");
1543 #if defined(LINUX)
1544 tty->print ("/bin/sh -c ");
1545 #elif defined(SOLARIS)
1546 tty->print ("/usr/bin/sh -c ");
1547 #endif
1548 tty->print_cr("\"%s\"...", cmd);
1549
1550 if (os::fork_and_exec(cmd) < 0) {
1551 tty->print_cr("os::fork_and_exec failed: %s (%s=%d)",
1552 os::strerror(errno), os::errno_name(errno), errno);
1553 }
1554 }
1555 }
1556
1557 void VMError::report_java_out_of_memory(const char* message) {
1558 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1559 MutexLocker ml(Heap_lock);
1560 VM_ReportJavaOutOfMemory op(message);
1561 VMThread::execute(&op);
1562 }
1563 }
1564
1565 void VMError::show_message_box(char *buf, int buflen) {
1566 bool yes;
1567 do {
1568 error_string(buf, buflen);
1569 yes = os::start_debugging(buf,buflen);
1570 } while (yes);
1571 }
1572
1573 // Timeout handling: check if a timeout happened (either a single step did
1574 // timeout or the whole of error reporting hit ErrorLogTimeout). Interrupt
1575 // the reporting thread if that is the case.
1576 bool VMError::check_timeout() {
1577
1578 if (ErrorLogTimeout == 0) {
1579 return false;
1580 }
1581
1582 // Do not check for timeouts if we still have a message box to show to the
1583 // user or if there are OnError handlers to be run.
1584 if (ShowMessageBoxOnError
1585 || (OnError != NULL && OnError[0] != '\0')
1586 || Arguments::abort_hook() != NULL) {
1587 return false;
1588 }
1589
1590 const jlong reporting_start_time_l = get_reporting_start_time();
1591 const jlong now = get_current_timestamp();
1592 // Timestamp is stored in nanos.
1593 if (reporting_start_time_l > 0) {
1594 const jlong end = reporting_start_time_l + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR;
1595 if (end <= now) {
1596 _reporting_did_timeout = true;
1597 interrupt_reporting_thread();
1598 return true; // global timeout
1599 }
1600 }
1601
1602 const jlong step_start_time_l = get_step_start_time();
1603 if (step_start_time_l > 0) {
1604 // A step times out after a quarter of the total timeout. Steps are mostly fast unless they
1605 // hang for some reason, so this simple rule allows for three hanging step and still
1606 // hopefully leaves time enough for the rest of the steps to finish.
1607 const jlong end = step_start_time_l + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR / 4;
1608 if (end <= now) {
1609 _step_did_timeout = true;
1610 interrupt_reporting_thread();
1611 return false; // (Not a global timeout)
1612 }
1613 }
1614
1615 return false;
1616
1617 }
1618
1619 #ifndef PRODUCT
1620 typedef void (*voidfun_t)();
1621 // Crash with an authentic sigfpe
1622 static void crash_with_sigfpe() {
1623 // generate a native synchronous SIGFPE where possible;
1624 // if that did not cause a signal (e.g. on ppc), just
1625 // raise the signal.
1626 volatile int x = 0;
1627 volatile int y = 1/x;
1628 #ifndef _WIN32
1629 // OSX implements raise(sig) incorrectly so we need to
1630 // explicitly target the current thread
1631 pthread_kill(pthread_self(), SIGFPE);
1632 #endif
1633 } // end: crash_with_sigfpe
1634
1635 // crash with sigsegv at non-null address.
1636 static void crash_with_segfault() {
1637
1638 char* const crash_addr = (char*) VMError::get_segfault_address();
1639 *crash_addr = 'X';
1640
1641 } // end: crash_with_segfault
1642
1643 void VMError::test_error_handler() {
1644 controlled_crash(ErrorHandlerTest);
1645 }
1646
1647 // crash in a controlled way:
1648 // how can be one of:
1649 // 1,2 - asserts
1650 // 3,4 - guarantee
1651 // 5-7 - fatal
1652 // 8 - vm_exit_out_of_memory
1653 // 9 - ShouldNotCallThis
1654 // 10 - ShouldNotReachHere
1655 // 11 - Unimplemented
1656 // 12,13 - (not guaranteed) crashes
1657 // 14 - SIGSEGV
1658 // 15 - SIGFPE
1659 void VMError::controlled_crash(int how) {
1660 if (how == 0) return;
1661
1662 // If asserts are disabled, use the corresponding guarantee instead.
1663 NOT_DEBUG(if (how <= 2) how += 2);
1664
1665 const char* const str = "hello";
1666 const size_t num = (size_t)os::vm_page_size();
1667
1668 const char* const eol = os::line_separator();
1669 const char* const msg = "this message should be truncated during formatting";
1670 char * const dataPtr = NULL; // bad data pointer
1671 const void (*funcPtr)(void) = (const void(*)()) 0xF; // bad function pointer
1672
1673 // Keep this in sync with test/hotspot/jtreg/runtime/ErrorHandling/ErrorHandler.java
1674 // which tests cases 1 thru 13.
1675 // Case 14 is tested by test/hotspot/jtreg/runtime/ErrorHandling/SafeFetchInErrorHandlingTest.java.
1676 // Case 15 is tested by test/hotspot/jtreg/runtime/ErrorHandling/SecondaryErrorTest.java.
1677 // Case 16 is tested by test/hotspot/jtreg/runtime/ErrorHandling/ThreadsListHandleInErrorHandlingTest.java.
1678 // Case 17 is tested by test/hotspot/jtreg/runtime/ErrorHandling/NestedThreadsListHandleInErrorHandlingTest.java.
1679 switch (how) {
1680 case 1: vmassert(str == NULL, "expected null"); break;
1681 case 2: vmassert(num == 1023 && *str == 'X',
1682 "num=" SIZE_FORMAT " str=\"%s\"", num, str); break;
1683 case 3: guarantee(str == NULL, "expected null"); break;
1684 case 4: guarantee(num == 1023 && *str == 'X',
1685 "num=" SIZE_FORMAT " str=\"%s\"", num, str); break;
1686 case 5: fatal("expected null"); break;
1687 case 6: fatal("num=" SIZE_FORMAT " str=\"%s\"", num, str); break;
1688 case 7: fatal("%s%s# %s%s# %s%s# %s%s# %s%s# "
1689 "%s%s# %s%s# %s%s# %s%s# %s%s# "
1690 "%s%s# %s%s# %s%s# %s%s# %s",
1691 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol,
1692 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol,
1693 msg, eol, msg, eol, msg, eol, msg, eol, msg); break;
1694 case 8: vm_exit_out_of_memory(num, OOM_MALLOC_ERROR, "ChunkPool::allocate"); break;
1695 case 9: ShouldNotCallThis(); break;
1696 case 10: ShouldNotReachHere(); break;
1697 case 11: Unimplemented(); break;
1698 // There's no guarantee the bad data pointer will crash us
1699 // so "break" out to the ShouldNotReachHere().
1700 case 12: *dataPtr = '\0'; break;
1701 // There's no guarantee the bad function pointer will crash us
1702 // so "break" out to the ShouldNotReachHere().
1703 case 13: (*funcPtr)(); break;
1704 case 14: crash_with_segfault(); break;
1705 case 15: crash_with_sigfpe(); break;
1706 case 16: {
1707 ThreadsListHandle tlh;
1708 fatal("Force crash with an active ThreadsListHandle.");
1709 }
1710 case 17: {
1711 ThreadsListHandle tlh;
1712 {
1713 ThreadsListHandle tlh2;
1714 fatal("Force crash with a nested ThreadsListHandle.");
1715 }
1716 }
1717
1718 default: tty->print_cr("ERROR: %d: unexpected test_num value.", how);
1719 }
1720 tty->print_cr("VMError::controlled_crash: survived intentional crash. Did you suppress the assert?");
1721 ShouldNotReachHere();
1722 }
1723 #endif // !PRODUCT
1724