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 "jfr/jfrEvents.hpp"
33 #include "memory/resourceArea.hpp"
34 #include "prims/whitebox.hpp"
35 #include "runtime/arguments.hpp"
36 #include "runtime/atomic.hpp"
37 #include "runtime/frame.inline.hpp"
38 #include "runtime/init.hpp"
39 #include "runtime/os.hpp"
40 #include "runtime/thread.inline.hpp"
41 #include "runtime/threadSMR.hpp"
42 #include "runtime/vmThread.hpp"
43 #include "runtime/vm_operations.hpp"
44 #include "runtime/vm_version.hpp"
45 #include "runtime/flags/jvmFlag.hpp"
46 #include "services/memTracker.hpp"
47 #include "utilities/debug.hpp"
48 #include "utilities/decoder.hpp"
49 #include "utilities/defaultStream.hpp"
50 #include "utilities/events.hpp"
51 #include "utilities/vmError.hpp"
52 #include "utilities/macros.hpp"
53 #if INCLUDE_JFR
54 #include "jfr/jfr.hpp"
55 #endif
56
57 #ifndef PRODUCT
58 #include <signal.h>
59 #endif // PRODUCT
60
61 bool VMError::_vfork_mode = false;
62
63 bool VMError::is_forkmode_vfork() { return _vfork_mode; }
64
65 bool VMError::_error_reported = false;
66
67 // call this when the VM is dying--it might loosen some asserts
68 bool VMError::is_error_reported() { return _error_reported; }
69
70 // returns an address which is guaranteed to generate a SIGSEGV on read,
71 // for test purposes, which is not NULL and contains bits in every word
72 void* VMError::get_segfault_address() {
73 return (void*)
74 #ifdef _LP64
75 0xABC0000000000ABCULL;
76 #else
77 0x00000ABC;
78 #endif
79 }
80
81 // List of environment variables that should be reported in error log file.
82 const char *env_list[] = {
83 // All platforms
84 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
85 "JAVA_COMPILER", "PATH", "USERNAME",
86
87 // Env variables that are defined on Solaris/Linux/BSD
88 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
89 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
90
91 // defined on AIX
92 "LIBPATH", "LDR_PRELOAD", "LDR_PRELOAD64",
93
94 // defined on Linux
95 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
96
97 // defined on Darwin
98 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
99 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
100 "DYLD_INSERT_LIBRARIES",
101
102 // defined on Windows
103 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
104
105 (const char *)0
106 };
107
108 // A simple parser for -XX:OnError, usage:
109 // ptr = OnError;
110 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
111 // ... ...
112 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
113 if (ptr == NULL || *ptr == NULL) return NULL;
114
115 const char* cmd = *ptr;
116
117 // skip leading blanks or ';'
118 while (*cmd == ' ' || *cmd == ';') cmd++;
119
120 if (*cmd == '\0') return NULL;
121
122 const char * cmdend = cmd;
123 while (*cmdend != '\0' && *cmdend != ';') cmdend++;
124
125 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
126
127 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
128 return buf;
129 }
130
131 static void print_bug_submit_message(outputStream *out, Thread *thread) {
132 if (out == NULL) return;
133 out->print_raw_cr("# If you would like to submit a bug report, please visit:");
134 out->print_raw ("# ");
135 out->print_raw_cr(Arguments::java_vendor_url_bug());
136 // If the crash is in native code, encourage user to submit a bug to the
137 // provider of that code.
138 if (thread && thread->is_Java_thread() &&
139 !thread->is_hidden_from_external_view()) {
140 JavaThread* jt = (JavaThread*)thread;
141 if (jt->thread_state() == _thread_in_native) {
142 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
143 }
144 }
145 out->print_raw_cr("#");
146 }
147
148 bool VMError::coredump_status;
149 char VMError::coredump_message[O_BUFLEN];
150
151 void VMError::record_coredump_status(const char* message, bool status) {
152 coredump_status = status;
153 strncpy(coredump_message, message, sizeof(coredump_message));
154 coredump_message[sizeof(coredump_message)-1] = 0;
155 }
156
157 // Return a string to describe the error
158 char* VMError::error_string(char* buf, int buflen) {
159 char signame_buf[64];
160 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
161
162 if (signame) {
163 jio_snprintf(buf, buflen,
164 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT,
165 signame, _id, _pc,
166 os::current_process_id(), os::current_thread_id());
167 } else if (_filename != NULL && _lineno > 0) {
168 // skip directory names
169 char separator = os::file_separator()[0];
170 const char *p = strrchr(_filename, separator);
171 int n = jio_snprintf(buf, buflen,
172 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT,
173 p ? p + 1 : _filename, _lineno,
174 os::current_process_id(), os::current_thread_id());
175 if (n >= 0 && n < buflen && _message) {
176 if (strlen(_detail_msg) > 0) {
177 jio_snprintf(buf + n, buflen - n, "%s%s: %s",
178 os::line_separator(), _message, _detail_msg);
179 } else {
180 jio_snprintf(buf + n, buflen - n, "%sError: %s",
181 os::line_separator(), _message);
182 }
183 }
184 } else {
185 jio_snprintf(buf, buflen,
186 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT,
187 _id, os::current_process_id(), os::current_thread_id());
188 }
189
190 return buf;
191 }
192
193 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
194 char* buf, int buflen, bool verbose) {
195 #ifdef ZERO
196 if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
197 // StackFrameStream uses the frame anchor, which may not have
198 // been set up. This can be done at any time in Zero, however,
199 // so if it hasn't been set up then we just set it up now and
200 // clear it again when we're done.
201 bool has_last_Java_frame = jt->has_last_Java_frame();
202 if (!has_last_Java_frame)
203 jt->set_last_Java_frame();
204 st->print("Java frames:");
205 st->cr();
206
207 // Print the frames
208 StackFrameStream sfs(jt);
209 for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
210 sfs.current()->zero_print_on_error(i, st, buf, buflen);
211 st->cr();
212 }
213
214 // Reset the frame anchor if necessary
215 if (!has_last_Java_frame)
216 jt->reset_last_Java_frame();
217 }
218 #else
219 if (jt->has_last_Java_frame()) {
220 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
221 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
222 sfs.current()->print_on_error(st, buf, buflen, verbose);
223 st->cr();
224 }
225 }
226 #endif // ZERO
227 }
228
229 void VMError::print_native_stack(outputStream* st, frame fr, Thread* t, char* buf, int buf_size) {
230
231 // see if it's a valid frame
232 if (fr.pc()) {
233 st->print_cr("Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)");
234
235 int count = 0;
236 while (count++ < StackPrintLimit) {
237 fr.print_on_error(st, buf, buf_size);
238 if (fr.pc()) { // print source file and line, if available
239 char buf[128];
240 int line_no;
241 if (Decoder::get_source_info(fr.pc(), buf, sizeof(buf), &line_no)) {
242 st->print(" (%s:%d)", buf, line_no);
243 }
244 }
245 st->cr();
246 // Compiled code may use EBP register on x86 so it looks like
247 // non-walkable C frame. Use frame.sender() for java frames.
248 if (t && t->is_Java_thread()) {
249 // Catch very first native frame by using stack address.
250 // For JavaThread stack_base and stack_size should be set.
251 if (!t->on_local_stack((address)(fr.real_fp() + 1))) {
252 break;
253 }
254 if (fr.is_java_frame() || fr.is_native_frame() || fr.is_runtime_frame()) {
255 RegisterMap map((JavaThread*)t, false); // No update
256 fr = fr.sender(&map);
257 } else {
258 // is_first_C_frame() does only simple checks for frame pointer,
259 // it will pass if java compiled code has a pointer in EBP.
260 if (os::is_first_C_frame(&fr)) break;
261 fr = os::get_sender_for_C_frame(&fr);
262 }
263 } else {
264 if (os::is_first_C_frame(&fr)) break;
265 fr = os::get_sender_for_C_frame(&fr);
266 }
267 }
268
269 if (count > StackPrintLimit) {
270 st->print_cr("...<more frames>...");
271 }
272
273 st->cr();
274 }
275 }
276
277 static void print_oom_reasons(outputStream* st) {
278 st->print_cr("# Possible reasons:");
279 st->print_cr("# The system is out of physical RAM or swap space");
280 if (UseCompressedOops) {
281 st->print_cr("# The process is running with CompressedOops enabled, and the Java Heap may be blocking the growth of the native heap");
282 }
283 if (LogBytesPerWord == 2) {
284 st->print_cr("# In 32 bit mode, the process size limit was hit");
285 }
286 st->print_cr("# Possible solutions:");
287 st->print_cr("# Reduce memory load on the system");
288 st->print_cr("# Increase physical memory or swap space");
289 st->print_cr("# Check if swap backing store is full");
290 if (LogBytesPerWord == 2) {
291 st->print_cr("# Use 64 bit Java on a 64 bit OS");
292 }
293 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)");
294 st->print_cr("# Decrease number of Java threads");
295 st->print_cr("# Decrease Java thread stack sizes (-Xss)");
296 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize=");
297 if (UseCompressedOops) {
298 switch (Universe::narrow_oop_mode()) {
299 case Universe::UnscaledNarrowOop:
300 st->print_cr("# JVM is running with Unscaled Compressed Oops mode in which the Java heap is");
301 st->print_cr("# placed in the first 4GB address space. The Java Heap base address is the");
302 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
303 st->print_cr("# to set the Java Heap base and to place the Java Heap above 4GB virtual address.");
304 break;
305 case Universe::ZeroBasedNarrowOop:
306 st->print_cr("# JVM is running with Zero Based Compressed Oops mode in which the Java heap is");
307 st->print_cr("# placed in the first 32GB address space. The Java Heap base address is the");
308 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
309 st->print_cr("# to set the Java Heap base and to place the Java Heap above 32GB virtual address.");
310 break;
311 default:
312 break;
313 }
314 }
315 st->print_cr("# This output file may be truncated or incomplete.");
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 GCConfig::hs_err_name(),
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 metaspace information")
877
878 if (_verbose && Universe::is_fully_initialized()) {
879 st->print_cr("Metaspace:");
880 MetaspaceUtils::print_basic_report(st, 0);
881 }
882
883 STEP("printing code cache information")
884
885 if (_verbose && Universe::is_fully_initialized()) {
886 // print code cache information before vm abort
887 CodeCache::print_summary(st);
888 st->cr();
889 }
890
891 STEP("printing ring buffers")
892
893 if (_verbose) {
894 Events::print_all(st);
895 st->cr();
896 }
897
898 STEP("printing dynamic libraries")
899
900 if (_verbose) {
901 // dynamic libraries, or memory map
902 os::print_dll_info(st);
903 st->cr();
904 }
905
906 STEP("printing native decoder state")
907
908 if (_verbose) {
909 Decoder::print_state_on(st);
910 st->cr();
911 }
912
913 STEP("printing VM options")
914
915 if (_verbose) {
916 // VM options
917 Arguments::print_on(st);
918 st->cr();
919 }
920
921 STEP("printing flags")
922
923 if (_verbose) {
924 JVMFlag::printFlags(
925 st,
926 true, // with comments
927 false, // no ranges
928 true); // skip defaults
929 st->cr();
930 }
931
932 STEP("printing warning if internal testing API used")
933
934 if (WhiteBox::used()) {
935 st->print_cr("Unsupported internal testing APIs have been used.");
936 st->cr();
937 }
938
939 STEP("printing log configuration")
940 if (_verbose){
941 st->print_cr("Logging:");
942 LogConfiguration::describe_current_configuration(st);
943 st->cr();
944 }
945
946 STEP("printing all environment variables")
947
948 if (_verbose) {
949 os::print_environment_variables(st, env_list);
950 st->cr();
951 }
952
953 STEP("printing signal handlers")
954
955 if (_verbose) {
956 os::print_signal_handlers(st, buf, sizeof(buf));
957 st->cr();
958 }
959
960 STEP("Native Memory Tracking")
961 if (_verbose) {
962 MemTracker::error_report(st);
963 }
964
965 STEP("printing system")
966
967 if (_verbose) {
968 st->cr();
969 st->print_cr("--------------- S Y S T E M ---------------");
970 st->cr();
971 }
972
973 STEP("printing OS information")
974
975 if (_verbose) {
976 os::print_os_info(st);
977 st->cr();
978 }
979
980 STEP("printing CPU info")
981 if (_verbose) {
982 os::print_cpu_info(st, buf, sizeof(buf));
983 st->cr();
984 }
985
986 STEP("printing memory info")
987
988 if (_verbose) {
989 os::print_memory_info(st);
990 st->cr();
991 }
992
993 STEP("printing internal vm info")
994
995 if (_verbose) {
996 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
997 st->cr();
998 }
999
1000 // print a defined marker to show that error handling finished correctly.
1001 STEP("printing end marker")
1002
1003 if (_verbose) {
1004 st->print_cr("END.");
1005 }
1006
1007 END
1008
1009 # undef BEGIN
1010 # undef STEP
1011 # undef END
1012 }
1013
1014 // Report for the vm_info_cmd. This prints out the information above omitting
1015 // crash and thread specific information. If output is added above, it should be added
1016 // here also, if it is safe to call during a running process.
1017 void VMError::print_vm_info(outputStream* st) {
1018
1019 char buf[O_BUFLEN];
1020 report_vm_version(st, buf, sizeof(buf));
1021
1022 // STEP("printing summary")
1023
1024 st->cr();
1025 st->print_cr("--------------- S U M M A R Y ------------");
1026 st->cr();
1027
1028 // STEP("printing VM option summary")
1029
1030 // VM options
1031 Arguments::print_summary_on(st);
1032 st->cr();
1033
1034 // STEP("printing summary machine and OS info")
1035
1036 os::print_summary_info(st, buf, sizeof(buf));
1037
1038 // STEP("printing date and time")
1039
1040 os::print_date_and_time(st, buf, sizeof(buf));
1041
1042 // Skip: STEP("printing thread")
1043
1044 // STEP("printing process")
1045
1046 st->cr();
1047 st->print_cr("--------------- P R O C E S S ---------------");
1048 st->cr();
1049
1050 // STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
1051
1052 if (Exceptions::has_exception_counts()) {
1053 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
1054 Exceptions::print_exception_counts_on_error(st);
1055 st->cr();
1056 }
1057
1058 // STEP("printing compressed oops mode")
1059
1060 if (UseCompressedOops) {
1061 Universe::print_compressed_oops_mode(st);
1062 if (UseCompressedClassPointers) {
1063 Metaspace::print_compressed_class_space(st);
1064 }
1065 st->cr();
1066 }
1067
1068 // STEP("printing heap information")
1069
1070 if (Universe::is_fully_initialized()) {
1071 MutexLocker hl(Heap_lock);
1072 Universe::heap()->print_on_error(st);
1073 st->cr();
1074 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page()));
1075 st->cr();
1076 }
1077
1078 // STEP("printing metaspace information")
1079
1080 if (Universe::is_fully_initialized()) {
1081 st->print_cr("Metaspace:");
1082 MetaspaceUtils::print_basic_report(st, 0);
1083 }
1084
1085 // STEP("printing code cache information")
1086
1087 if (Universe::is_fully_initialized()) {
1088 // print code cache information before vm abort
1089 CodeCache::print_summary(st);
1090 st->cr();
1091 }
1092
1093 // STEP("printing ring buffers")
1094
1095 Events::print_all(st);
1096 st->cr();
1097
1098 // STEP("printing dynamic libraries")
1099
1100 // dynamic libraries, or memory map
1101 os::print_dll_info(st);
1102 st->cr();
1103
1104 // STEP("printing VM options")
1105
1106 // VM options
1107 Arguments::print_on(st);
1108 st->cr();
1109
1110 // STEP("printing warning if internal testing API used")
1111
1112 if (WhiteBox::used()) {
1113 st->print_cr("Unsupported internal testing APIs have been used.");
1114 st->cr();
1115 }
1116
1117 // STEP("printing log configuration")
1118 st->print_cr("Logging:");
1119 LogConfiguration::describe(st);
1120 st->cr();
1121
1122 // STEP("printing all environment variables")
1123
1124 os::print_environment_variables(st, env_list);
1125 st->cr();
1126
1127 // STEP("printing signal handlers")
1128
1129 os::print_signal_handlers(st, buf, sizeof(buf));
1130 st->cr();
1131
1132 // STEP("Native Memory Tracking")
1133
1134 MemTracker::error_report(st);
1135
1136 // STEP("printing system")
1137
1138 st->cr();
1139 st->print_cr("--------------- S Y S T E M ---------------");
1140 st->cr();
1141
1142 // STEP("printing OS information")
1143
1144 os::print_os_info(st);
1145 st->cr();
1146
1147 // STEP("printing CPU info")
1148
1149 os::print_cpu_info(st, buf, sizeof(buf));
1150 st->cr();
1151
1152 // STEP("printing memory info")
1153
1154 os::print_memory_info(st);
1155 st->cr();
1156
1157 // STEP("printing internal vm info")
1158
1159 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
1160 st->cr();
1161
1162 // print a defined marker to show that error handling finished correctly.
1163 // STEP("printing end marker")
1164
1165 st->print_cr("END.");
1166 }
1167
1168 volatile intptr_t VMError::first_error_tid = -1;
1169
1170 // An error could happen before tty is initialized or after it has been
1171 // destroyed.
1172 // Please note: to prevent large stack allocations, the log- and
1173 // output-stream use a global scratch buffer for format printing.
1174 // (see VmError::report_and_die(). Access to those streams is synchronized
1175 // in VmError::report_and_die() - there is only one reporting thread at
1176 // any given time.
1177 fdStream VMError::out(defaultStream::output_fd());
1178 fdStream VMError::log; // error log used by VMError::report_and_die()
1179
1180 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
1181 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
1182 int fd = -1;
1183 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
1184 // the O_EXCL flag will cause the open to fail if the file exists
1185 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666);
1186 }
1187 return fd;
1188 }
1189
1190 /**
1191 * Construct file name for a log file and return it's file descriptor.
1192 * Name and location depends on pattern, default_pattern params and access
1193 * permissions.
1194 */
1195 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) {
1196 int fd = -1;
1197
1198 // If possible, use specified pattern to construct log file name
1199 if (pattern != NULL) {
1200 fd = expand_and_open(pattern, buf, buflen, 0);
1201 }
1202
1203 // Either user didn't specify, or the user's location failed,
1204 // so use the default name in the current directory
1205 if (fd == -1) {
1206 const char* cwd = os::get_current_directory(buf, buflen);
1207 if (cwd != NULL) {
1208 size_t pos = strlen(cwd);
1209 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
1210 pos += fsep_len;
1211 if (fsep_len > 0) {
1212 fd = expand_and_open(default_pattern, buf, buflen, pos);
1213 }
1214 }
1215 }
1216
1217 // try temp directory if it exists.
1218 if (fd == -1) {
1219 const char* tmpdir = os::get_temp_directory();
1220 if (tmpdir != NULL && strlen(tmpdir) > 0) {
1221 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
1222 if (pos > 0) {
1223 fd = expand_and_open(default_pattern, buf, buflen, pos);
1224 }
1225 }
1226 }
1227
1228 return fd;
1229 }
1230
1231 int VMError::_id;
1232 const char* VMError::_message;
1233 char VMError::_detail_msg[1024];
1234 Thread* VMError::_thread;
1235 address VMError::_pc;
1236 void* VMError::_siginfo;
1237 void* VMError::_context;
1238 const char* VMError::_filename;
1239 int VMError::_lineno;
1240 size_t VMError::_size;
1241
1242 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo,
1243 void* context, const char* detail_fmt, ...)
1244 {
1245 va_list detail_args;
1246 va_start(detail_args, detail_fmt);
1247 report_and_die(sig, NULL, detail_fmt, detail_args, thread, pc, siginfo, context, NULL, 0, 0);
1248 va_end(detail_args);
1249 }
1250
1251 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context)
1252 {
1253 report_and_die(thread, sig, pc, siginfo, context, "%s", "");
1254 }
1255
1256 void VMError::report_and_die(const char* message, const char* detail_fmt, ...)
1257 {
1258 va_list detail_args;
1259 va_start(detail_args, detail_fmt);
1260 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, NULL, NULL, NULL, NULL, NULL, 0, 0);
1261 va_end(detail_args);
1262 }
1263
1264 void VMError::report_and_die(const char* message)
1265 {
1266 report_and_die(message, "%s", "");
1267 }
1268
1269 void VMError::report_and_die(Thread* thread, void* context, const char* filename, int lineno, const char* message,
1270 const char* detail_fmt, va_list detail_args)
1271 {
1272 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, thread, NULL, NULL, context, filename, lineno, 0);
1273 }
1274
1275 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, size_t size,
1276 VMErrorType vm_err_type, const char* detail_fmt, va_list detail_args) {
1277 report_and_die(vm_err_type, NULL, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, size);
1278 }
1279
1280 void VMError::report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args,
1281 Thread* thread, address pc, void* siginfo, void* context, const char* filename,
1282 int lineno, size_t size)
1283 {
1284 // Don't allocate large buffer on stack
1285 static char buffer[O_BUFLEN];
1286 out.set_scratch_buffer(buffer, sizeof(buffer));
1287 log.set_scratch_buffer(buffer, sizeof(buffer));
1288
1289 // How many errors occurred in error handler when reporting first_error.
1290 static int recursive_error_count;
1291
1292 // We will first print a brief message to standard out (verbose = false),
1293 // then save detailed information in log file (verbose = true).
1294 static bool out_done = false; // done printing to standard out
1295 static bool log_done = false; // done saving error log
1296
1297 if (SuppressFatalErrorMessage) {
1298 os::abort(CreateCoredumpOnCrash);
1299 }
1300 intptr_t mytid = os::current_thread_id();
1301 if (first_error_tid == -1 &&
1302 Atomic::cmpxchg(mytid, &first_error_tid, (intptr_t)-1) == -1) {
1303
1304 // Initialize time stamps to use the same base.
1305 out.time_stamp().update_to(1);
1306 log.time_stamp().update_to(1);
1307
1308 _id = id;
1309 _message = message;
1310 _thread = thread;
1311 _pc = pc;
1312 _siginfo = siginfo;
1313 _context = context;
1314 _filename = filename;
1315 _lineno = lineno;
1316 _size = size;
1317 jio_vsnprintf(_detail_msg, sizeof(_detail_msg), detail_fmt, detail_args);
1318
1319 // first time
1320 _error_reported = true;
1321
1322 reporting_started();
1323 record_reporting_start_time();
1324
1325 if (ShowMessageBoxOnError || PauseAtExit) {
1326 show_message_box(buffer, sizeof(buffer));
1327
1328 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
1329 // WatcherThread can kill JVM if the error handler hangs.
1330 ShowMessageBoxOnError = false;
1331 }
1332
1333 os::check_dump_limit(buffer, sizeof(buffer));
1334
1335 // reset signal handlers or exception filter; make sure recursive crashes
1336 // are handled properly.
1337 reset_signal_handlers();
1338
1339 EventShutdown e;
1340 if (e.should_commit()) {
1341 e.set_reason("VM Error");
1342 e.commit();
1343 }
1344
1345 JFR_ONLY(Jfr::on_vm_shutdown(true);)
1346
1347 } else {
1348 // If UseOsErrorReporting we call this for each level of the call stack
1349 // while searching for the exception handler. Only the first level needs
1350 // to be reported.
1351 if (UseOSErrorReporting && log_done) return;
1352
1353 // This is not the first error, see if it happened in a different thread
1354 // or in the same thread during error reporting.
1355 if (first_error_tid != mytid) {
1356 char msgbuf[64];
1357 jio_snprintf(msgbuf, sizeof(msgbuf),
1358 "[thread " INTX_FORMAT " also had an error]",
1359 mytid);
1360 out.print_raw_cr(msgbuf);
1361
1362 // error reporting is not MT-safe, block current thread
1363 os::infinite_sleep();
1364
1365 } else {
1366 if (recursive_error_count++ > 30) {
1367 out.print_raw_cr("[Too many errors, abort]");
1368 os::die();
1369 }
1370
1371 outputStream* const st = log.is_open() ? &log : &out;
1372 st->cr();
1373
1374 // Timeout handling.
1375 if (_step_did_timeout) {
1376 // The current step had a timeout. Lets continue reporting with the next step.
1377 st->print_raw("[timeout occurred during error reporting in step \"");
1378 st->print_raw(_current_step_info);
1379 st->print_cr("\"] after " INT64_FORMAT " s.",
1380 (int64_t)
1381 ((get_current_timestamp() - _step_start_time) / TIMESTAMP_TO_SECONDS_FACTOR));
1382 } else if (_reporting_did_timeout) {
1383 // We hit ErrorLogTimeout. Reporting will stop altogether. Let's wrap things
1384 // up, the process is about to be stopped by the WatcherThread.
1385 st->print_cr("------ Timeout during error reporting after " INT64_FORMAT " s. ------",
1386 (int64_t)
1387 ((get_current_timestamp() - _reporting_start_time) / TIMESTAMP_TO_SECONDS_FACTOR));
1388 st->flush();
1389 // Watcherthread is about to call os::die. Lets just wait.
1390 os::infinite_sleep();
1391 } else {
1392 // Crash or assert during error reporting. Lets continue reporting with the next step.
1393 stringStream ss(buffer, sizeof(buffer));
1394 // Note: this string does get parsed by a number of jtreg tests,
1395 // see hotspot/jtreg/runtime/ErrorHandling.
1396 ss.print("[error occurred during error reporting (%s), id 0x%x",
1397 _current_step_info, id);
1398 char signal_name[64];
1399 if (os::exception_name(id, signal_name, sizeof(signal_name))) {
1400 ss.print(", %s (0x%x) at pc=" PTR_FORMAT, signal_name, id, p2i(pc));
1401 } else {
1402 if (should_report_bug(id)) {
1403 ss.print(", Internal Error (%s:%d)",
1404 filename == NULL ? "??" : filename, lineno);
1405 } else {
1406 ss.print(", Out of Memory Error (%s:%d)",
1407 filename == NULL ? "??" : filename, lineno);
1408 }
1409 }
1410 ss.print("]");
1411 st->print_raw_cr(buffer);
1412 st->cr();
1413 }
1414 }
1415 }
1416
1417 // print to screen
1418 if (!out_done) {
1419 report(&out, false);
1420
1421 out_done = true;
1422
1423 _current_step = 0;
1424 _current_step_info = "";
1425 }
1426
1427 // print to error log file
1428 if (!log_done) {
1429 // see if log file is already open
1430 if (!log.is_open()) {
1431 // open log file
1432 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer));
1433 if (fd != -1) {
1434 out.print_raw("# An error report file with more information is saved as:\n# ");
1435 out.print_raw_cr(buffer);
1436
1437 log.set_fd(fd);
1438 } else {
1439 out.print_raw_cr("# Can not save log file, dump to screen..");
1440 log.set_fd(defaultStream::output_fd());
1441 }
1442 }
1443
1444 report(&log, true);
1445 log_done = true;
1446 _current_step = 0;
1447 _current_step_info = "";
1448
1449 if (log.fd() != defaultStream::output_fd()) {
1450 close(log.fd());
1451 }
1452
1453 log.set_fd(-1);
1454 }
1455
1456 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay
1457 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1458 skip_replay = true;
1459 ciEnv* env = ciEnv::current();
1460 if (env != NULL) {
1461 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer));
1462 if (fd != -1) {
1463 FILE* replay_data_file = os::open(fd, "w");
1464 if (replay_data_file != NULL) {
1465 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1466 env->dump_replay_data_unsafe(&replay_data_stream);
1467 out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1468 out.print_raw_cr(buffer);
1469 } else {
1470 int e = errno;
1471 out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1472 out.print_raw_cr(os::strerror(e));
1473 }
1474 }
1475 }
1476 }
1477
1478 static bool skip_bug_url = !should_report_bug(_id);
1479 if (!skip_bug_url) {
1480 skip_bug_url = true;
1481
1482 out.print_raw_cr("#");
1483 print_bug_submit_message(&out, _thread);
1484 }
1485
1486 static bool skip_OnError = false;
1487 if (!skip_OnError && OnError && OnError[0]) {
1488 skip_OnError = true;
1489
1490 // Flush output and finish logs before running OnError commands.
1491 ostream_abort();
1492
1493 out.print_raw_cr("#");
1494 out.print_raw ("# -XX:OnError=\"");
1495 out.print_raw (OnError);
1496 out.print_raw_cr("\"");
1497
1498 char* cmd;
1499 const char* ptr = OnError;
1500 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1501 out.print_raw ("# Executing ");
1502 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1503 out.print_raw ("/bin/sh -c ");
1504 #elif defined(SOLARIS)
1505 out.print_raw ("/usr/bin/sh -c ");
1506 #elif defined(_WINDOWS)
1507 out.print_raw ("cmd /C ");
1508 #endif
1509 out.print_raw ("\"");
1510 out.print_raw (cmd);
1511 out.print_raw_cr("\" ...");
1512
1513 if (os::fork_and_exec(cmd) < 0) {
1514 out.print_cr("os::fork_and_exec failed: %s (%s=%d)",
1515 os::strerror(errno), os::errno_name(errno), errno);
1516 }
1517 }
1518
1519 // done with OnError
1520 OnError = NULL;
1521 }
1522
1523 if (!UseOSErrorReporting) {
1524 // os::abort() will call abort hooks, try it first.
1525 static bool skip_os_abort = false;
1526 if (!skip_os_abort) {
1527 skip_os_abort = true;
1528 bool dump_core = should_report_bug(_id);
1529 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context);
1530 }
1531
1532 // if os::abort() doesn't abort, try os::die();
1533 os::die();
1534 }
1535 }
1536
1537 /*
1538 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1539 * ensures utilities such as jmap can observe the process is a consistent state.
1540 */
1541 class VM_ReportJavaOutOfMemory : public VM_Operation {
1542 private:
1543 const char* _message;
1544 public:
1545 VM_ReportJavaOutOfMemory(const char* message) { _message = message; }
1546 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
1547 void doit();
1548 };
1549
1550 void VM_ReportJavaOutOfMemory::doit() {
1551 // Don't allocate large buffer on stack
1552 static char buffer[O_BUFLEN];
1553
1554 tty->print_cr("#");
1555 tty->print_cr("# java.lang.OutOfMemoryError: %s", _message);
1556 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1557
1558 // make heap parsability
1559 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
1560
1561 char* cmd;
1562 const char* ptr = OnOutOfMemoryError;
1563 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1564 tty->print("# Executing ");
1565 #if defined(LINUX)
1566 tty->print ("/bin/sh -c ");
1567 #elif defined(SOLARIS)
1568 tty->print ("/usr/bin/sh -c ");
1569 #endif
1570 tty->print_cr("\"%s\"...", cmd);
1571
1572 VMError::_vfork_mode = true;
1573
1574 if (os::fork_and_exec(cmd) < 0) {
1575 tty->print_cr("os::fork_and_exec failed: %s (%s=%d)",
1576 os::strerror(errno), os::errno_name(errno), errno);
1577 }
1578 }
1579
1580 VMError::_vfork_mode = false;
1581 }
1582
1583 void VMError::report_java_out_of_memory(const char* message) {
1584 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1585 MutexLocker ml(Heap_lock);
1586 VM_ReportJavaOutOfMemory op(message);
1587 VMThread::execute(&op);
1588 }
1589 }
1590
1591 void VMError::show_message_box(char *buf, int buflen) {
1592 bool yes;
1593 do {
1594 error_string(buf, buflen);
1595 yes = os::start_debugging(buf,buflen);
1596 } while (yes);
1597 }
1598
1599 // Timeout handling: check if a timeout happened (either a single step did
1600 // timeout or the whole of error reporting hit ErrorLogTimeout). Interrupt
1601 // the reporting thread if that is the case.
1602 bool VMError::check_timeout() {
1603
1604 if (ErrorLogTimeout == 0) {
1605 return false;
1606 }
1607
1608 // Do not check for timeouts if we still have a message box to show to the
1609 // user or if there are OnError handlers to be run.
1610 if (ShowMessageBoxOnError
1611 || (OnError != NULL && OnError[0] != '\0')
1612 || Arguments::abort_hook() != NULL) {
1613 return false;
1614 }
1615
1616 const jlong reporting_start_time_l = get_reporting_start_time();
1617 const jlong now = get_current_timestamp();
1618 // Timestamp is stored in nanos.
1619 if (reporting_start_time_l > 0) {
1620 const jlong end = reporting_start_time_l + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR;
1621 if (end <= now) {
1622 _reporting_did_timeout = true;
1623 interrupt_reporting_thread();
1624 return true; // global timeout
1625 }
1626 }
1627
1628 const jlong step_start_time_l = get_step_start_time();
1629 if (step_start_time_l > 0) {
1630 // A step times out after a quarter of the total timeout. Steps are mostly fast unless they
1631 // hang for some reason, so this simple rule allows for three hanging step and still
1632 // hopefully leaves time enough for the rest of the steps to finish.
1633 const jlong end = step_start_time_l + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR / 4;
1634 if (end <= now) {
1635 _step_did_timeout = true;
1636 interrupt_reporting_thread();
1637 return false; // (Not a global timeout)
1638 }
1639 }
1640
1641 return false;
1642
1643 }
1644
1645 #ifndef PRODUCT
1646 #if defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x5140
1647 #pragma error_messages(off, SEC_NULL_PTR_DEREF)
1648 #endif
1649 typedef void (*voidfun_t)();
1650 // Crash with an authentic sigfpe
1651 static void crash_with_sigfpe() {
1652 // generate a native synchronous SIGFPE where possible;
1653 // if that did not cause a signal (e.g. on ppc), just
1654 // raise the signal.
1655 volatile int x = 0;
1656 volatile int y = 1/x;
1657 #ifndef _WIN32
1658 // OSX implements raise(sig) incorrectly so we need to
1659 // explicitly target the current thread
1660 pthread_kill(pthread_self(), SIGFPE);
1661 #endif
1662 } // end: crash_with_sigfpe
1663
1664 // crash with sigsegv at non-null address.
1665 static void crash_with_segfault() {
1666
1667 char* const crash_addr = (char*) VMError::get_segfault_address();
1668 *crash_addr = 'X';
1669
1670 } // end: crash_with_segfault
1671
1672 void VMError::test_error_handler() {
1673 controlled_crash(ErrorHandlerTest);
1674 }
1675
1676 // crash in a controlled way:
1677 // how can be one of:
1678 // 1,2 - asserts
1679 // 3,4 - guarantee
1680 // 5-7 - fatal
1681 // 8 - vm_exit_out_of_memory
1682 // 9 - ShouldNotCallThis
1683 // 10 - ShouldNotReachHere
1684 // 11 - Unimplemented
1685 // 12,13 - (not guaranteed) crashes
1686 // 14 - SIGSEGV
1687 // 15 - SIGFPE
1688 void VMError::controlled_crash(int how) {
1689 if (how == 0) return;
1690
1691 // If asserts are disabled, use the corresponding guarantee instead.
1692 NOT_DEBUG(if (how <= 2) how += 2);
1693
1694 const char* const str = "hello";
1695 const size_t num = (size_t)os::vm_page_size();
1696
1697 const char* const eol = os::line_separator();
1698 const char* const msg = "this message should be truncated during formatting";
1699 char * const dataPtr = NULL; // bad data pointer
1700 const void (*funcPtr)(void) = (const void(*)()) 0xF; // bad function pointer
1701
1702 // Keep this in sync with test/hotspot/jtreg/runtime/ErrorHandling/ErrorHandler.java
1703 // which tests cases 1 thru 13.
1704 // Case 14 is tested by test/hotspot/jtreg/runtime/ErrorHandling/SafeFetchInErrorHandlingTest.java.
1705 // Case 15 is tested by test/hotspot/jtreg/runtime/ErrorHandling/SecondaryErrorTest.java.
1706 // Case 16 is tested by test/hotspot/jtreg/runtime/ErrorHandling/ThreadsListHandleInErrorHandlingTest.java.
1707 // Case 17 is tested by test/hotspot/jtreg/runtime/ErrorHandling/NestedThreadsListHandleInErrorHandlingTest.java.
1708
1709 // We grab Threads_lock to keep ThreadsSMRSupport::print_info_on()
1710 // from racing with Threads::add() or Threads::remove() as we
1711 // generate the hs_err_pid file. This makes our ErrorHandling tests
1712 // more stable.
1713 MutexLockerEx ml(Threads_lock->owned_by_self() ? NULL : Threads_lock, Mutex::_no_safepoint_check_flag);
1714
1715 switch (how) {
1716 case 1: vmassert(str == NULL, "expected null"); break;
1717 case 2: vmassert(num == 1023 && *str == 'X',
1718 "num=" SIZE_FORMAT " str=\"%s\"", num, str); break;
1719 case 3: guarantee(str == NULL, "expected null"); break;
1720 case 4: guarantee(num == 1023 && *str == 'X',
1721 "num=" SIZE_FORMAT " str=\"%s\"", num, str); break;
1722 case 5: fatal("expected null"); break;
1723 case 6: fatal("num=" SIZE_FORMAT " str=\"%s\"", num, str); break;
1724 case 7: fatal("%s%s# %s%s# %s%s# %s%s# %s%s# "
1725 "%s%s# %s%s# %s%s# %s%s# %s%s# "
1726 "%s%s# %s%s# %s%s# %s%s# %s",
1727 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol,
1728 msg, eol, msg, eol, msg, eol, msg, eol, msg, eol,
1729 msg, eol, msg, eol, msg, eol, msg, eol, msg); break;
1730 case 8: vm_exit_out_of_memory(num, OOM_MALLOC_ERROR, "ChunkPool::allocate"); break;
1731 case 9: ShouldNotCallThis(); break;
1732 case 10: ShouldNotReachHere(); break;
1733 case 11: Unimplemented(); break;
1734 // There's no guarantee the bad data pointer will crash us
1735 // so "break" out to the ShouldNotReachHere().
1736 case 12: *dataPtr = '\0'; break;
1737 // There's no guarantee the bad function pointer will crash us
1738 // so "break" out to the ShouldNotReachHere().
1739 case 13: (*funcPtr)(); break;
1740 case 14: crash_with_segfault(); break;
1741 case 15: crash_with_sigfpe(); break;
1742 case 16: {
1743 ThreadsListHandle tlh;
1744 fatal("Force crash with an active ThreadsListHandle.");
1745 }
1746 case 17: {
1747 ThreadsListHandle tlh;
1748 {
1749 ThreadsListHandle tlh2;
1750 fatal("Force crash with a nested ThreadsListHandle.");
1751 }
1752 }
1753
1754 default: tty->print_cr("ERROR: %d: unexpected test_num value.", how);
1755 }
1756 tty->print_cr("VMError::controlled_crash: survived intentional crash. Did you suppress the assert?");
1757 ShouldNotReachHere();
1758 }
1759 #endif // !PRODUCT
1760