1 /*
2 * Copyright (c) 2003, 2022, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2017, 2020 SAP SE. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "jvm.h"
28 #include "cds/metaspaceShared.hpp"
29 #include "code/codeCache.hpp"
30 #include "compiler/compileBroker.hpp"
31 #include "compiler/disassembler.hpp"
32 #include "gc/shared/gcConfig.hpp"
33 #include "gc/shared/gcLogPrecious.hpp"
34 #include "logging/logConfiguration.hpp"
35 #include "memory/metaspace.hpp"
36 #include "memory/metaspaceUtils.hpp"
37 #include "memory/resourceArea.inline.hpp"
38 #include "memory/universe.hpp"
39 #include "oops/compressedKlass.hpp"
40 #include "oops/compressedOops.hpp"
41 #include "prims/whitebox.hpp"
42 #include "runtime/arguments.hpp"
43 #include "runtime/atomic.hpp"
44 #include "runtime/frame.inline.hpp"
45 #include "runtime/init.hpp"
46 #include "runtime/os.hpp"
47 #include "runtime/osThread.hpp"
48 #include "runtime/safefetch.hpp"
49 #include "runtime/safepointMechanism.hpp"
50 #include "runtime/stackFrameStream.inline.hpp"
51 #include "runtime/thread.inline.hpp"
52 #include "runtime/threadSMR.hpp"
53 #include "runtime/vmThread.hpp"
54 #include "runtime/vmOperations.hpp"
55 #include "runtime/vm_version.hpp"
56 #include "runtime/flags/jvmFlag.hpp"
57 #include "services/memTracker.hpp"
58 #include "utilities/debug.hpp"
59 #include "utilities/decoder.hpp"
60 #include "utilities/defaultStream.hpp"
61 #include "utilities/events.hpp"
62 #include "utilities/vmError.hpp"
63 #include "utilities/macros.hpp"
64 #if INCLUDE_JFR
65 #include "jfr/jfr.hpp"
66 #endif
67 #if INCLUDE_JVMCI
68 #include "jvmci/jvmci.hpp"
69 #endif
70
71 #ifndef PRODUCT
72 #include <signal.h>
73 #endif // PRODUCT
74
75 bool VMError::coredump_status;
76 char VMError::coredump_message[O_BUFLEN];
77 int VMError::_current_step;
78 const char* VMError::_current_step_info;
79 volatile jlong VMError::_reporting_start_time = -1;
80 volatile bool VMError::_reporting_did_timeout = false;
81 volatile jlong VMError::_step_start_time = -1;
82 volatile bool VMError::_step_did_timeout = false;
83 volatile intptr_t VMError::_first_error_tid = -1;
84 int VMError::_id;
85 const char* VMError::_message;
86 char VMError::_detail_msg[1024];
87 Thread* VMError::_thread;
88 address VMError::_pc;
89 void* VMError::_siginfo;
90 void* VMError::_context;
91 bool VMError::_print_native_stack_used = false;
92 const char* VMError::_filename;
93 int VMError::_lineno;
94 size_t VMError::_size;
95
96 // List of environment variables that should be reported in error log file.
97 static const char* env_list[] = {
98 // All platforms
99 "JAVA_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
100 "PATH", "USERNAME",
101
102 // Env variables that are defined on Linux/BSD
103 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
104 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
105 "LANG", "LC_ALL", "LC_CTYPE", "LC_NUMERIC", "LC_TIME",
106 "TERM", "TMPDIR", "TZ",
107
108 // defined on AIX
109 "LIBPATH", "LDR_PRELOAD", "LDR_PRELOAD64",
110
111 // defined on Linux/AIX/BSD
112 "_JAVA_SR_SIGNUM",
113
114 // defined on Darwin
115 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
116 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
117 "DYLD_INSERT_LIBRARIES",
118
119 // defined on Windows
120 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR", "TMP", "TEMP",
121
122 (const char *)0
123 };
124
125 // A simple parser for -XX:OnError, usage:
126 // ptr = OnError;
127 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
128 // ... ...
129 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
130 if (ptr == NULL || *ptr == NULL) return NULL;
131
132 const char* cmd = *ptr;
133
134 // skip leading blanks or ';'
135 while (*cmd == ' ' || *cmd == ';') cmd++;
136
137 if (*cmd == '\0') return NULL;
138
139 const char * cmdend = cmd;
140 while (*cmdend != '\0' && *cmdend != ';') cmdend++;
141
142 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
143
144 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
145 return buf;
146 }
147
148 static void print_bug_submit_message(outputStream *out, Thread *thread) {
149 if (out == NULL) return;
150 const char *url = Arguments::java_vendor_url_bug();
151 if (url == NULL || *url == '\0')
152 url = JDK_Version::runtime_vendor_vm_bug_url();
153 if (url != NULL && *url != '\0') {
154 out->print_raw_cr("# If you would like to submit a bug report, please visit:");
155 out->print_raw ("# ");
156 out->print_raw_cr(url);
157 }
158 // If the crash is in native code, encourage user to submit a bug to the
159 // provider of that code.
160 if (thread && thread->is_Java_thread() &&
161 !thread->is_hidden_from_external_view()) {
162 if (JavaThread::cast(thread)->thread_state() == _thread_in_native) {
163 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
164 }
165 }
166 out->print_raw_cr("#");
167 }
168
169 void VMError::record_coredump_status(const char* message, bool status) {
170 coredump_status = status;
171 strncpy(coredump_message, message, sizeof(coredump_message));
172 coredump_message[sizeof(coredump_message)-1] = 0;
173 }
174
175 // Return a string to describe the error
176 char* VMError::error_string(char* buf, int buflen) {
177 char signame_buf[64];
178 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
179
180 if (signame) {
181 jio_snprintf(buf, buflen,
182 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT,
183 signame, _id, _pc,
184 os::current_process_id(), os::current_thread_id());
185 } else if (_filename != NULL && _lineno > 0) {
186 // skip directory names
187 char separator = os::file_separator()[0];
188 const char *p = strrchr(_filename, separator);
189 int n = jio_snprintf(buf, buflen,
190 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT,
191 p ? p + 1 : _filename, _lineno,
192 os::current_process_id(), os::current_thread_id());
193 if (n >= 0 && n < buflen && _message) {
194 if (strlen(_detail_msg) > 0) {
195 jio_snprintf(buf + n, buflen - n, "%s%s: %s",
196 os::line_separator(), _message, _detail_msg);
197 } else {
198 jio_snprintf(buf + n, buflen - n, "%sError: %s",
199 os::line_separator(), _message);
200 }
201 }
202 } else {
203 jio_snprintf(buf, buflen,
204 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT,
205 _id, os::current_process_id(), os::current_thread_id());
206 }
207
208 return buf;
209 }
210
211 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
212 char* buf, int buflen, bool verbose) {
213 #ifdef ZERO
214 if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
215 // StackFrameStream uses the frame anchor, which may not have
216 // been set up. This can be done at any time in Zero, however,
217 // so if it hasn't been set up then we just set it up now and
218 // clear it again when we're done.
219 bool has_last_Java_frame = jt->has_last_Java_frame();
220 if (!has_last_Java_frame)
221 jt->set_last_Java_frame();
222 st->print("Java frames:");
223 st->cr();
224
225 // Print the frames
226 StackFrameStream sfs(jt, true /* update */, true /* process_frames */);
227 for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
228 sfs.current()->zero_print_on_error(i, st, buf, buflen);
229 st->cr();
230 }
231
232 // Reset the frame anchor if necessary
233 if (!has_last_Java_frame)
234 jt->reset_last_Java_frame();
235 }
236 #else
237 if (jt->has_last_Java_frame()) {
238 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
239 for (StackFrameStream sfs(jt, true /* update */, true /* process_frames */); !sfs.is_done(); sfs.next()) {
240 sfs.current()->print_on_error(st, buf, buflen, verbose);
241 st->cr();
242 }
243 }
244 #endif // ZERO
245 }
246
247 /**
248 * Adds `value` to `list` iff it's not already present and there is sufficient
249 * capacity (i.e. length(list) < `list_capacity`). The length of the list
250 * is the index of the first nullptr entry or `list_capacity` if there are
251 * no nullptr entries.
252 *
253 * @ return true if the value was added, false otherwise
254 */
255 static bool add_if_absent(address value, address* list, int list_capacity) {
256 for (int i = 0; i < list_capacity; i++) {
257 if (list[i] == value) {
258 return false;
259 }
260 if (list[i] == nullptr) {
261 list[i] = value;
262 if (i + 1 < list_capacity) {
263 list[i + 1] = nullptr;
264 }
265 return true;
266 }
267 }
268 return false;
269 }
270
271 /**
272 * Prints the VM generated code unit, if any, containing `pc` if it has not already
273 * been printed. If the code unit is an InterpreterCodelet or StubCodeDesc, it is
274 * only printed if `is_crash_pc` is true.
275 *
276 * @param printed array of code units that have already been printed (delimited by NULL entry)
277 * @param printed_capacity the capacity of `printed`
278 * @return true if the code unit was printed, false otherwise
279 */
280 static bool print_code(outputStream* st, Thread* thread, address pc, bool is_crash_pc,
281 address* printed, int printed_capacity) {
282 if (Interpreter::contains(pc)) {
283 if (is_crash_pc) {
284 // The interpreter CodeBlob is very large so try to print the codelet instead.
285 InterpreterCodelet* codelet = Interpreter::codelet_containing(pc);
286 if (codelet != nullptr) {
287 if (add_if_absent((address) codelet, printed, printed_capacity)) {
288 codelet->print_on(st);
289 Disassembler::decode(codelet->code_begin(), codelet->code_end(), st);
290 return true;
291 }
292 }
293 }
294 } else {
295 StubCodeDesc* desc = StubCodeDesc::desc_for(pc);
296 if (desc != nullptr) {
297 if (is_crash_pc) {
298 if (add_if_absent((address) desc, printed, printed_capacity)) {
299 desc->print_on(st);
300 Disassembler::decode(desc->begin(), desc->end(), st);
301 return true;
302 }
303 }
304 } else if (thread != nullptr) {
305 CodeBlob* cb = CodeCache::find_blob(pc);
306 if (cb != nullptr && add_if_absent((address) cb, printed, printed_capacity)) {
307 // Disassembling nmethod will incur resource memory allocation,
308 // only do so when thread is valid.
309 ResourceMark rm(thread);
310 Disassembler::decode(cb, st);
311 st->cr();
312 return true;
313 }
314 }
315 }
316 return false;
317 }
318
319 /**
320 * Gets the caller frame of `fr`.
321 *
322 * @returns an invalid frame (i.e. fr.pc() === 0) if the caller cannot be obtained
323 */
324 static frame next_frame(frame fr, Thread* t) {
325 // Compiled code may use EBP register on x86 so it looks like
326 // non-walkable C frame. Use frame.sender() for java frames.
327 frame invalid;
328 if (t != nullptr && t->is_Java_thread()) {
329 // Catch very first native frame by using stack address.
330 // For JavaThread stack_base and stack_size should be set.
331 if (!t->is_in_full_stack((address)(fr.real_fp() + 1))) {
332 return invalid;
333 }
334 if (fr.is_java_frame() || fr.is_native_frame() || fr.is_runtime_frame()) {
335 RegisterMap map(JavaThread::cast(t), false); // No update
336 return fr.sender(&map);
337 } else {
338 // is_first_C_frame() does only simple checks for frame pointer,
339 // it will pass if java compiled code has a pointer in EBP.
340 if (os::is_first_C_frame(&fr)) return invalid;
341 return os::get_sender_for_C_frame(&fr);
342 }
343 } else {
344 if (os::is_first_C_frame(&fr)) return invalid;
345 return os::get_sender_for_C_frame(&fr);
346 }
347 }
348
349 void VMError::print_native_stack(outputStream* st, frame fr, Thread* t, char* buf, int buf_size) {
350
351 // see if it's a valid frame
352 if (fr.pc()) {
353 st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)");
354
355 int count = 0;
356 while (count++ < StackPrintLimit) {
357 fr.print_on_error(st, buf, buf_size);
358 if (fr.pc()) { // print source file and line, if available
359 char buf[128];
360 int line_no;
361 if (Decoder::get_source_info(fr.pc(), buf, sizeof(buf), &line_no)) {
362 st->print(" (%s:%d)", buf, line_no);
363 }
364 }
365 st->cr();
366 fr = next_frame(fr, t);
367 if (fr.pc() == nullptr) {
368 break;
369 }
370 }
371
372 if (count > StackPrintLimit) {
373 st->print_cr("...<more frames>...");
374 }
375
376 st->cr();
377 }
378 }
379
380 static void print_oom_reasons(outputStream* st) {
381 st->print_cr("# Possible reasons:");
382 st->print_cr("# The system is out of physical RAM or swap space");
383 if (UseCompressedOops) {
384 st->print_cr("# The process is running with CompressedOops enabled, and the Java Heap may be blocking the growth of the native heap");
385 }
386 if (LogBytesPerWord == 2) {
387 st->print_cr("# In 32 bit mode, the process size limit was hit");
388 }
389 st->print_cr("# Possible solutions:");
390 st->print_cr("# Reduce memory load on the system");
391 st->print_cr("# Increase physical memory or swap space");
392 st->print_cr("# Check if swap backing store is full");
393 if (LogBytesPerWord == 2) {
394 st->print_cr("# Use 64 bit Java on a 64 bit OS");
395 }
396 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)");
397 st->print_cr("# Decrease number of Java threads");
398 st->print_cr("# Decrease Java thread stack sizes (-Xss)");
399 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize=");
400 if (UseCompressedOops) {
401 switch (CompressedOops::mode()) {
402 case CompressedOops::UnscaledNarrowOop:
403 st->print_cr("# JVM is running with Unscaled Compressed Oops mode in which the Java heap is");
404 st->print_cr("# placed in the first 4GB address space. The Java Heap base address is the");
405 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
406 st->print_cr("# to set the Java Heap base and to place the Java Heap above 4GB virtual address.");
407 break;
408 case CompressedOops::ZeroBasedNarrowOop:
409 st->print_cr("# JVM is running with Zero Based Compressed Oops mode in which the Java heap is");
410 st->print_cr("# placed in the first 32GB address space. The Java Heap base address is the");
411 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
412 st->print_cr("# to set the Java Heap base and to place the Java Heap above 32GB virtual address.");
413 break;
414 default:
415 break;
416 }
417 }
418 st->print_cr("# This output file may be truncated or incomplete.");
419 }
420
421 static void report_vm_version(outputStream* st, char* buf, int buflen) {
422 // VM version
423 st->print_cr("#");
424 JDK_Version::current().to_string(buf, buflen);
425 const char* runtime_name = JDK_Version::runtime_name() != NULL ?
426 JDK_Version::runtime_name() : "";
427 const char* runtime_version = JDK_Version::runtime_version() != NULL ?
428 JDK_Version::runtime_version() : "";
429 const char* vendor_version = JDK_Version::runtime_vendor_version() != NULL ?
430 JDK_Version::runtime_vendor_version() : "";
431 const char* jdk_debug_level = VM_Version::printable_jdk_debug_level() != NULL ?
432 VM_Version::printable_jdk_debug_level() : "";
433
434 st->print_cr("# JRE version: %s%s%s (%s) (%sbuild %s)", runtime_name,
435 (*vendor_version != '\0') ? " " : "", vendor_version,
436 buf, jdk_debug_level, runtime_version);
437
438 // This is the long version with some default settings added
439 st->print_cr("# Java VM: %s%s%s (%s%s, %s%s%s%s%s%s, %s, %s)",
440 VM_Version::vm_name(),
441 (*vendor_version != '\0') ? " " : "", vendor_version,
442 jdk_debug_level,
443 VM_Version::vm_release(),
444 VM_Version::vm_info_string(),
445 TieredCompilation ? ", tiered" : "",
446 #if INCLUDE_JVMCI
447 EnableJVMCI ? ", jvmci" : "",
448 UseJVMCICompiler ? ", jvmci compiler" : "",
449 #else
450 "", "",
451 #endif
452 UseCompressedOops ? ", compressed oops" : "",
453 UseCompressedClassPointers ? ", compressed class ptrs" : "",
454 GCConfig::hs_err_name(),
455 VM_Version::vm_platform_string()
456 );
457 }
458
459 // Returns true if at least one thread reported a fatal error and fatal error handling is in process.
460 bool VMError::is_error_reported() {
461 return _first_error_tid != -1;
462 }
463
464 // Returns true if the current thread reported a fatal error.
465 bool VMError::is_error_reported_in_current_thread() {
466 return _first_error_tid == os::current_thread_id();
467 }
468
469 // Helper, return current timestamp for timeout handling.
470 jlong VMError::get_current_timestamp() {
471 return os::javaTimeNanos();
472 }
473 // Factor to translate the timestamp to seconds.
474 #define TIMESTAMP_TO_SECONDS_FACTOR (1000 * 1000 * 1000)
475
476 void VMError::record_reporting_start_time() {
477 const jlong now = get_current_timestamp();
478 Atomic::store(&_reporting_start_time, now);
479 }
480
481 jlong VMError::get_reporting_start_time() {
482 return Atomic::load(&_reporting_start_time);
483 }
484
485 void VMError::record_step_start_time() {
486 const jlong now = get_current_timestamp();
487 Atomic::store(&_step_start_time, now);
488 }
489
490 jlong VMError::get_step_start_time() {
491 return Atomic::load(&_step_start_time);
492 }
493
494 void VMError::clear_step_start_time() {
495 return Atomic::store(&_step_start_time, (jlong)0);
496 }
497
498 // This is the main function to report a fatal error. Only one thread can
499 // call this function, so we don't need to worry about MT-safety. But it's
500 // possible that the error handler itself may crash or die on an internal
501 // error, for example, when the stack/heap is badly damaged. We must be
502 // able to handle recursive errors that happen inside error handler.
503 //
504 // Error reporting is done in several steps. If a crash or internal error
505 // occurred when reporting an error, the nested signal/exception handler
506 // can skip steps that are already (or partially) done. Error reporting will
507 // continue from the next step. This allows us to retrieve and print
508 // information that may be unsafe to get after a fatal error. If it happens,
509 // you may find nested report_and_die() frames when you look at the stack
510 // in a debugger.
511 //
512 // In general, a hang in error handler is much worse than a crash or internal
513 // error, as it's harder to recover from a hang. Deadlock can happen if we
514 // try to grab a lock that is already owned by current thread, or if the
515 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
516 // error handler and all the functions it called should avoid grabbing any
517 // lock. An important thing to notice is that memory allocation needs a lock.
518 //
519 // We should avoid using large stack allocated buffers. Many errors happen
520 // when stack space is already low. Making things even worse is that there
521 // could be nested report_and_die() calls on stack (see above). Only one
522 // thread can report error, so large buffers are statically allocated in data
523 // segment.
524 void VMError::report(outputStream* st, bool _verbose) {
525
526 # define BEGIN if (_current_step == 0) { _current_step = __LINE__;
527 # define STEP(s) } if (_current_step < __LINE__) { _current_step = __LINE__; _current_step_info = s; \
528 record_step_start_time(); _step_did_timeout = false;
529 # define END clear_step_start_time(); }
530
531 // don't allocate large buffer on stack
532 static char buf[O_BUFLEN];
533
534 BEGIN
535
536 STEP("printing fatal error message")
537
538 st->print_cr("#");
539 if (should_report_bug(_id)) {
540 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
541 } else {
542 st->print_cr("# There is insufficient memory for the Java "
543 "Runtime Environment to continue.");
544 }
545
546 #ifdef ASSERT
547 // Error handler self tests
548 // Meaning of codes passed through in the tests.
549 #define TEST_SECONDARY_CRASH 14
550 #define TEST_RESOURCE_MARK_CRASH 2
551
552 // test secondary error handling. Test it twice, to test that resetting
553 // error handler after a secondary crash works.
554 STEP("test secondary crash 1")
555 if (_verbose && TestCrashInErrorHandler == TEST_SECONDARY_CRASH) {
556 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
557 TestCrashInErrorHandler);
558 controlled_crash(TestCrashInErrorHandler);
559 }
560
561 STEP("test secondary crash 2")
562 if (_verbose && TestCrashInErrorHandler == TEST_SECONDARY_CRASH) {
563 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
564 TestCrashInErrorHandler);
565 controlled_crash(TestCrashInErrorHandler);
566 }
567
568 STEP("test missing ResourceMark does not crash")
569 if (_verbose && TestCrashInErrorHandler == TEST_RESOURCE_MARK_CRASH) {
570 stringStream message;
571 message.print("This is a message with no ResourceMark");
572 tty->print_cr("%s", message.as_string());
573 }
574
575 // TestUnresponsiveErrorHandler: We want to test both step timeouts and global timeout.
576 // Step to global timeout ratio is 4:1, so in order to be absolutely sure we hit the
577 // global timeout, let's execute the timeout step five times.
578 // See corresponding test in test/runtime/ErrorHandling/TimeoutInErrorHandlingTest.java
579 STEP("setup for test unresponsive error reporting step")
580 if (_verbose && TestUnresponsiveErrorHandler) {
581 // We record reporting_start_time for this test here because we
582 // care about the time spent executing TIMEOUT_TEST_STEP and not
583 // about the time it took us to get here.
584 tty->print_cr("Recording reporting_start_time for TestUnresponsiveErrorHandler.");
585 record_reporting_start_time();
586 }
587
588 #define TIMEOUT_TEST_STEP STEP("test unresponsive error reporting step") \
589 if (_verbose && TestUnresponsiveErrorHandler) { os::infinite_sleep(); }
590 TIMEOUT_TEST_STEP
591 TIMEOUT_TEST_STEP
592 TIMEOUT_TEST_STEP
593 TIMEOUT_TEST_STEP
594 TIMEOUT_TEST_STEP
595
596 STEP("test safefetch in error handler")
597 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice
598 // to test that resetting the signal handler works correctly.
599 if (_verbose && TestSafeFetchInErrorHandler) {
600 st->print_cr("Will test SafeFetch...");
601 int* const invalid_pointer = (int*)segfault_address;
602 const int x = 0x76543210;
603 int i1 = SafeFetch32(invalid_pointer, x);
604 int i2 = SafeFetch32(invalid_pointer, x);
605 if (i1 == x && i2 == x) {
606 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern
607 } else {
608 st->print_cr("??");
609 }
610 }
611 #endif // ASSERT
612
613 STEP("printing type of error")
614
615 switch(static_cast<unsigned int>(_id)) {
616 case OOM_MALLOC_ERROR:
617 case OOM_MMAP_ERROR:
618 case OOM_MPROTECT_ERROR:
619 if (_size) {
620 st->print("# Native memory allocation ");
621 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
622 (_id == (int)OOM_MMAP_ERROR) ? "(mmap) failed to map " :
623 "(mprotect) failed to protect ");
624 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
625 st->print("%s", buf);
626 st->print(" bytes");
627 if (strlen(_detail_msg) > 0) {
628 st->print(" for ");
629 st->print("%s", _detail_msg);
630 }
631 st->cr();
632 } else {
633 if (strlen(_detail_msg) > 0) {
634 st->print("# ");
635 st->print_cr("%s", _detail_msg);
636 }
637 }
638 // In error file give some solutions
639 if (_verbose) {
640 print_oom_reasons(st);
641 } else {
642 return; // that's enough for the screen
643 }
644 break;
645 case INTERNAL_ERROR:
646 default:
647 break;
648 }
649
650 STEP("printing exception/signal name")
651
652 st->print_cr("#");
653 st->print("# ");
654 // Is it an OS exception/signal?
655 if (os::exception_name(_id, buf, sizeof(buf))) {
656 st->print("%s", buf);
657 st->print(" (0x%x)", _id); // signal number
658 st->print(" at pc=" PTR_FORMAT, p2i(_pc));
659 if (_siginfo != NULL && os::signal_sent_by_kill(_siginfo)) {
660 st->print(" (sent by kill)");
661 }
662 } else {
663 if (should_report_bug(_id)) {
664 st->print("Internal Error");
665 } else {
666 st->print("Out of Memory Error");
667 }
668 if (_filename != NULL && _lineno > 0) {
669 #ifdef PRODUCT
670 // In product mode chop off pathname?
671 char separator = os::file_separator()[0];
672 const char *p = strrchr(_filename, separator);
673 const char *file = p ? p+1 : _filename;
674 #else
675 const char *file = _filename;
676 #endif
677 st->print(" (%s:%d)", file, _lineno);
678 } else {
679 st->print(" (0x%x)", _id);
680 }
681 }
682
683 STEP("printing current thread and pid")
684
685 // process id, thread id
686 st->print(", pid=%d", os::current_process_id());
687 st->print(", tid=" UINTX_FORMAT, os::current_thread_id());
688 st->cr();
689
690 STEP("printing error message")
691
692 if (should_report_bug(_id)) { // already printed the message.
693 // error message
694 if (strlen(_detail_msg) > 0) {
695 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg);
696 } else if (_message) {
697 st->print_cr("# Error: %s", _message);
698 }
699 }
700
701 STEP("printing Java version string")
702
703 report_vm_version(st, buf, sizeof(buf));
704
705 STEP("printing problematic frame")
706
707 // Print current frame if we have a context (i.e. it's a crash)
708 if (_context) {
709 st->print_cr("# Problematic frame:");
710 st->print("# ");
711 frame fr = os::fetch_frame_from_context(_context);
712 fr.print_on_error(st, buf, sizeof(buf));
713 st->cr();
714 st->print_cr("#");
715 }
716
717 STEP("printing core file information")
718 st->print("# ");
719 if (CreateCoredumpOnCrash) {
720 if (coredump_status) {
721 st->print("Core dump will be written. Default location: %s", coredump_message);
722 } else {
723 st->print("No core dump will be written. %s", coredump_message);
724 }
725 } else {
726 st->print("CreateCoredumpOnCrash turned off, no core file dumped");
727 }
728 st->cr();
729 st->print_cr("#");
730
731 JFR_ONLY(STEP("printing jfr information"))
732 JFR_ONLY(Jfr::on_vm_error_report(st);)
733
734 STEP("printing bug submit message")
735
736 if (should_submit_bug_report(_id) && _verbose) {
737 print_bug_submit_message(st, _thread);
738 }
739
740 STEP("printing summary")
741
742 if (_verbose) {
743 st->cr();
744 st->print_cr("--------------- S U M M A R Y ------------");
745 st->cr();
746 }
747
748 STEP("printing VM option summary")
749
750 if (_verbose) {
751 // VM options
752 Arguments::print_summary_on(st);
753 st->cr();
754 }
755
756 STEP("printing summary machine and OS info")
757
758 if (_verbose) {
759 os::print_summary_info(st, buf, sizeof(buf));
760 }
761
762 STEP("printing date and time")
763
764 if (_verbose) {
765 os::print_date_and_time(st, buf, sizeof(buf));
766 }
767
768 STEP("printing thread")
769
770 if (_verbose) {
771 st->cr();
772 st->print_cr("--------------- T H R E A D ---------------");
773 st->cr();
774 }
775
776 STEP("printing current thread")
777
778 // current thread
779 if (_verbose) {
780 if (_thread) {
781 st->print("Current thread (" PTR_FORMAT "): ", p2i(_thread));
782 _thread->print_on_error(st, buf, sizeof(buf));
783 st->cr();
784 } else {
785 st->print_cr("Current thread is native thread");
786 }
787 st->cr();
788 }
789
790 STEP("printing current compile task")
791
792 if (_verbose && _thread && _thread->is_Compiler_thread()) {
793 CompilerThread* t = (CompilerThread*)_thread;
794 if (t->task()) {
795 st->cr();
796 st->print_cr("Current CompileTask:");
797 t->task()->print_line_on_error(st, buf, sizeof(buf));
798 st->cr();
799 }
800 }
801
802 STEP("printing stack bounds")
803
804 if (_verbose) {
805 st->print("Stack: ");
806
807 address stack_top;
808 size_t stack_size;
809
810 if (_thread) {
811 stack_top = _thread->stack_base();
812 stack_size = _thread->stack_size();
813 } else {
814 stack_top = os::current_stack_base();
815 stack_size = os::current_stack_size();
816 }
817
818 address stack_bottom = stack_top - stack_size;
819 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", p2i(stack_bottom), p2i(stack_top));
820
821 frame fr = _context ? os::fetch_frame_from_context(_context)
822 : os::current_frame();
823
824 if (fr.sp()) {
825 st->print(", sp=" PTR_FORMAT, p2i(fr.sp()));
826 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
827 st->print(", free space=" SIZE_FORMAT "k", free_stack_size);
828 }
829
830 st->cr();
831 }
832
833 STEP("printing native stack")
834
835 if (_verbose) {
836 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
837 // We have printed the native stack in platform-specific code
838 // Windows/x64 needs special handling.
839 } else {
840 frame fr = _context ? os::fetch_frame_from_context(_context)
841 : os::current_frame();
842
843 print_native_stack(st, fr, _thread, buf, sizeof(buf));
844 _print_native_stack_used = true;
845 }
846 }
847
848 STEP("printing Java stack")
849
850 if (_verbose && _thread && _thread->is_Java_thread()) {
851 print_stack_trace(st, JavaThread::cast(_thread), buf, sizeof(buf));
852 }
853
854 STEP("printing target Java thread stack")
855
856 // printing Java thread stack trace if it is involved in GC crash
857 if (_verbose && _thread && (_thread->is_Named_thread())) {
858 Thread* thread = ((NamedThread *)_thread)->processed_thread();
859 if (thread != NULL && thread->is_Java_thread()) {
860 JavaThread* jt = JavaThread::cast(thread);
861 st->print_cr("JavaThread " PTR_FORMAT " (nid = %d) was being processed", p2i(jt), jt->osthread()->thread_id());
862 print_stack_trace(st, jt, buf, sizeof(buf), true);
863 }
864 }
865
866 STEP("printing siginfo")
867
868 // signal no, signal code, address that caused the fault
869 if (_verbose && _siginfo) {
870 st->cr();
871 os::print_siginfo(st, _siginfo);
872 st->cr();
873 }
874
875 STEP("CDS archive access warning")
876
877 // Print an explicit hint if we crashed on access to the CDS archive.
878 if (_verbose && _siginfo) {
879 check_failing_cds_access(st, _siginfo);
880 st->cr();
881 }
882
883 STEP("printing register info")
884
885 // decode register contents if possible
886 if (_verbose && _context && _thread && Universe::is_fully_initialized()) {
887 ResourceMark rm(_thread);
888 os::print_register_info(st, _context);
889 st->cr();
890 }
891
892 STEP("printing registers, top of stack, instructions near pc")
893
894 // registers, top of stack, instructions near pc
895 if (_verbose && _context) {
896 os::print_context(st, _context);
897 st->cr();
898 }
899
900 STEP("inspecting top of stack")
901
902 // decode stack contents if possible
903 if (_verbose && _context && _thread && Universe::is_fully_initialized()) {
904 frame fr = os::fetch_frame_from_context(_context);
905 const int slots = 8;
906 const intptr_t *start = fr.sp();
907 const intptr_t *end = start + slots;
908 if (is_aligned(start, sizeof(intptr_t)) && os::is_readable_range(start, end)) {
909 st->print_cr("Stack slot to memory mapping:");
910 for (int i = 0; i < slots; ++i) {
911 st->print("stack at sp + %d slots: ", i);
912 ResourceMark rm(_thread);
913 os::print_location(st, *(start + i));
914 }
915 }
916 st->cr();
917 }
918
919 STEP("printing code blobs if possible")
920
921 if (_verbose) {
922 const int printed_capacity = max_error_log_print_code;
923 address printed[printed_capacity];
924 printed[0] = nullptr;
925 int printed_len = 0;
926 // Even though ErrorLogPrintCodeLimit is ranged checked
927 // during argument parsing, there's no way to prevent it
928 // subsequently (i.e., after parsing) being set to a
929 // value outside the range.
930 int limit = MIN2(ErrorLogPrintCodeLimit, printed_capacity);
931 if (limit > 0) {
932 // Scan the native stack
933 if (!_print_native_stack_used) {
934 // Only try to print code of the crashing frame since
935 // the native stack cannot be walked with next_frame.
936 if (print_code(st, _thread, _pc, true, printed, printed_capacity)) {
937 printed_len++;
938 }
939 } else {
940 frame fr = _context ? os::fetch_frame_from_context(_context)
941 : os::current_frame();
942 while (printed_len < limit && fr.pc() != nullptr) {
943 if (print_code(st, _thread, fr.pc(), fr.pc() == _pc, printed, printed_capacity)) {
944 printed_len++;
945 }
946 fr = next_frame(fr, _thread);
947 }
948 }
949
950 // Scan the Java stack
951 if (_thread != nullptr && _thread->is_Java_thread()) {
952 JavaThread* jt = JavaThread::cast(_thread);
953 if (jt->has_last_Java_frame()) {
954 for (StackFrameStream sfs(jt, true /* update */, true /* process_frames */); printed_len < limit && !sfs.is_done(); sfs.next()) {
955 address pc = sfs.current()->pc();
956 if (print_code(st, _thread, pc, pc == _pc, printed, printed_capacity)) {
957 printed_len++;
958 }
959 }
960 }
961 }
962 }
963 }
964
965 STEP("printing VM operation")
966
967 if (_verbose && _thread && _thread->is_VM_thread()) {
968 VMThread* t = (VMThread*)_thread;
969 VM_Operation* op = t->vm_operation();
970 if (op) {
971 op->print_on_error(st);
972 st->cr();
973 st->cr();
974 }
975 }
976
977 STEP("printing process")
978
979 if (_verbose) {
980 st->cr();
981 st->print_cr("--------------- P R O C E S S ---------------");
982 st->cr();
983 }
984
985 #ifndef _WIN32
986 STEP("printing user info")
987
988 if (ExtensiveErrorReports && _verbose) {
989 os::Posix::print_user_info(st);
990 }
991 #endif
992
993 STEP("printing all threads")
994
995 // all threads
996 if (_verbose && _thread) {
997 Threads::print_on_error(st, _thread, buf, sizeof(buf));
998 st->cr();
999 }
1000
1001 STEP("printing VM state")
1002
1003 if (_verbose) {
1004 // Safepoint state
1005 st->print("VM state: ");
1006
1007 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
1008 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
1009 else st->print("not at safepoint");
1010
1011 // Also see if error occurred during initialization or shutdown
1012 if (!Universe::is_fully_initialized()) {
1013 st->print(" (not fully initialized)");
1014 } else if (VM_Exit::vm_exited()) {
1015 st->print(" (shutting down)");
1016 } else {
1017 st->print(" (normal execution)");
1018 }
1019 st->cr();
1020 st->cr();
1021 }
1022
1023 STEP("printing owned locks on error")
1024
1025 // mutexes/monitors that currently have an owner
1026 if (_verbose) {
1027 print_owned_locks_on_error(st);
1028 st->cr();
1029 }
1030
1031 STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
1032
1033 if (_verbose && Exceptions::has_exception_counts()) {
1034 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
1035 Exceptions::print_exception_counts_on_error(st);
1036 st->cr();
1037 }
1038
1039 #ifdef _LP64
1040 STEP("printing compressed oops mode")
1041
1042 if (_verbose && UseCompressedOops) {
1043 CompressedOops::print_mode(st);
1044 st->cr();
1045 }
1046
1047 STEP("printing compressed klass pointers mode")
1048
1049 if (_verbose && UseCompressedClassPointers) {
1050 CDS_ONLY(MetaspaceShared::print_on(st);)
1051 Metaspace::print_compressed_class_space(st);
1052 CompressedKlassPointers::print_mode(st);
1053 st->cr();
1054 }
1055 #endif
1056
1057 STEP("printing heap information")
1058
1059 if (_verbose) {
1060 GCLogPrecious::print_on_error(st);
1061
1062 if (Universe::heap() != NULL) {
1063 Universe::heap()->print_on_error(st);
1064 st->cr();
1065 }
1066
1067 if (Universe::is_fully_initialized()) {
1068 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(SafepointMechanism::get_polling_page()));
1069 st->cr();
1070 }
1071 }
1072
1073 STEP("printing metaspace information")
1074
1075 if (_verbose && Universe::is_fully_initialized()) {
1076 st->print_cr("Metaspace:");
1077 MetaspaceUtils::print_basic_report(st, 0);
1078 }
1079
1080 STEP("printing code cache information")
1081
1082 if (_verbose && Universe::is_fully_initialized()) {
1083 // print code cache information before vm abort
1084 CodeCache::print_summary(st);
1085 st->cr();
1086 }
1087
1088 STEP("printing ring buffers")
1089
1090 if (_verbose) {
1091 Events::print_all(st);
1092 st->cr();
1093 }
1094
1095 STEP("printing dynamic libraries")
1096
1097 if (_verbose) {
1098 // dynamic libraries, or memory map
1099 os::print_dll_info(st);
1100 st->cr();
1101 }
1102
1103 STEP("printing native decoder state")
1104
1105 if (_verbose) {
1106 Decoder::print_state_on(st);
1107 st->cr();
1108 }
1109
1110 STEP("printing VM options")
1111
1112 if (_verbose) {
1113 // VM options
1114 Arguments::print_on(st);
1115 st->cr();
1116 }
1117
1118 STEP("printing flags")
1119
1120 if (_verbose) {
1121 JVMFlag::printFlags(
1122 st,
1123 true, // with comments
1124 false, // no ranges
1125 true); // skip defaults
1126 st->cr();
1127 }
1128
1129 STEP("printing warning if internal testing API used")
1130
1131 if (WhiteBox::used()) {
1132 st->print_cr("Unsupported internal testing APIs have been used.");
1133 st->cr();
1134 }
1135
1136 STEP("printing log configuration")
1137 if (_verbose){
1138 st->print_cr("Logging:");
1139 LogConfiguration::describe_current_configuration(st);
1140 st->cr();
1141 }
1142
1143 STEP("printing all environment variables")
1144
1145 if (_verbose) {
1146 os::print_environment_variables(st, env_list);
1147 st->cr();
1148 }
1149
1150 STEP("printing signal handlers")
1151
1152 if (_verbose) {
1153 os::print_signal_handlers(st, buf, sizeof(buf));
1154 st->cr();
1155 }
1156
1157 STEP("Native Memory Tracking")
1158 if (_verbose) {
1159 MemTracker::error_report(st);
1160 }
1161
1162 STEP("printing system")
1163
1164 if (_verbose) {
1165 st->cr();
1166 st->print_cr("--------------- S Y S T E M ---------------");
1167 st->cr();
1168 }
1169
1170 STEP("printing OS information")
1171
1172 if (_verbose) {
1173 os::print_os_info(st);
1174 st->cr();
1175 }
1176
1177 STEP("printing CPU info")
1178 if (_verbose) {
1179 os::print_cpu_info(st, buf, sizeof(buf));
1180 st->cr();
1181 }
1182
1183 STEP("printing memory info")
1184
1185 if (_verbose) {
1186 os::print_memory_info(st);
1187 st->cr();
1188 }
1189
1190 STEP("printing internal vm info")
1191
1192 if (_verbose) {
1193 st->print_cr("vm_info: %s", VM_Version::internal_vm_info_string());
1194 st->cr();
1195 }
1196
1197 // print a defined marker to show that error handling finished correctly.
1198 STEP("printing end marker")
1199
1200 if (_verbose) {
1201 st->print_cr("END.");
1202 }
1203
1204 END
1205
1206 # undef BEGIN
1207 # undef STEP
1208 # undef END
1209 }
1210
1211 // Report for the vm_info_cmd. This prints out the information above omitting
1212 // crash and thread specific information. If output is added above, it should be added
1213 // here also, if it is safe to call during a running process.
1214 void VMError::print_vm_info(outputStream* st) {
1215
1216 char buf[O_BUFLEN];
1217 report_vm_version(st, buf, sizeof(buf));
1218
1219 // STEP("printing summary")
1220
1221 st->cr();
1222 st->print_cr("--------------- S U M M A R Y ------------");
1223 st->cr();
1224
1225 // STEP("printing VM option summary")
1226
1227 // VM options
1228 Arguments::print_summary_on(st);
1229 st->cr();
1230
1231 // STEP("printing summary machine and OS info")
1232
1233 os::print_summary_info(st, buf, sizeof(buf));
1234
1235 // STEP("printing date and time")
1236
1237 os::print_date_and_time(st, buf, sizeof(buf));
1238
1239 // Skip: STEP("printing thread")
1240
1241 // STEP("printing process")
1242
1243 st->cr();
1244 st->print_cr("--------------- P R O C E S S ---------------");
1245 st->cr();
1246
1247 // STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
1248
1249 if (Exceptions::has_exception_counts()) {
1250 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
1251 Exceptions::print_exception_counts_on_error(st);
1252 st->cr();
1253 }
1254
1255 #ifdef _LP64
1256 // STEP("printing compressed oops mode")
1257 if (UseCompressedOops) {
1258 CompressedOops::print_mode(st);
1259 st->cr();
1260 }
1261
1262 // STEP("printing compressed class ptrs mode")
1263 if (UseCompressedClassPointers) {
1264 CDS_ONLY(MetaspaceShared::print_on(st);)
1265 Metaspace::print_compressed_class_space(st);
1266 CompressedKlassPointers::print_mode(st);
1267 st->cr();
1268 }
1269 #endif
1270
1271 // STEP("printing heap information")
1272
1273 if (Universe::is_fully_initialized()) {
1274 MutexLocker hl(Heap_lock);
1275 GCLogPrecious::print_on_error(st);
1276 Universe::heap()->print_on_error(st);
1277 st->cr();
1278 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(SafepointMechanism::get_polling_page()));
1279 st->cr();
1280 }
1281
1282 // STEP("printing metaspace information")
1283
1284 if (Universe::is_fully_initialized()) {
1285 st->print_cr("Metaspace:");
1286 MetaspaceUtils::print_basic_report(st, 0);
1287 }
1288
1289 // STEP("printing code cache information")
1290
1291 if (Universe::is_fully_initialized()) {
1292 // print code cache information before vm abort
1293 CodeCache::print_summary(st);
1294 st->cr();
1295 }
1296
1297 // STEP("printing ring buffers")
1298
1299 Events::print_all(st);
1300 st->cr();
1301
1302 // STEP("printing dynamic libraries")
1303
1304 // dynamic libraries, or memory map
1305 os::print_dll_info(st);
1306 st->cr();
1307
1308 // STEP("printing VM options")
1309
1310 // VM options
1311 Arguments::print_on(st);
1312 st->cr();
1313
1314 // STEP("printing warning if internal testing API used")
1315
1316 if (WhiteBox::used()) {
1317 st->print_cr("Unsupported internal testing APIs have been used.");
1318 st->cr();
1319 }
1320
1321 // STEP("printing log configuration")
1322 st->print_cr("Logging:");
1323 LogConfiguration::describe(st);
1324 st->cr();
1325
1326 // STEP("printing all environment variables")
1327
1328 os::print_environment_variables(st, env_list);
1329 st->cr();
1330
1331 // STEP("printing signal handlers")
1332
1333 os::print_signal_handlers(st, buf, sizeof(buf));
1334 st->cr();
1335
1336 // STEP("Native Memory Tracking")
1337
1338 MemTracker::error_report(st);
1339
1340 // STEP("printing system")
1341
1342 st->cr();
1343 st->print_cr("--------------- S Y S T E M ---------------");
1344 st->cr();
1345
1346 // STEP("printing OS information")
1347
1348 os::print_os_info(st);
1349 st->cr();
1350
1351 // STEP("printing CPU info")
1352
1353 os::print_cpu_info(st, buf, sizeof(buf));
1354 st->cr();
1355
1356 // STEP("printing memory info")
1357
1358 os::print_memory_info(st);
1359 st->cr();
1360
1361 // STEP("printing internal vm info")
1362
1363 st->print_cr("vm_info: %s", VM_Version::internal_vm_info_string());
1364 st->cr();
1365
1366 // print a defined marker to show that error handling finished correctly.
1367 // STEP("printing end marker")
1368
1369 st->print_cr("END.");
1370 }
1371
1372 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
1373 static int expand_and_open(const char* pattern, bool overwrite_existing, char* buf, size_t buflen, size_t pos) {
1374 int fd = -1;
1375 int mode = O_RDWR | O_CREAT;
1376 if (overwrite_existing) {
1377 mode |= O_TRUNC;
1378 } else {
1379 mode |= O_EXCL;
1380 }
1381 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
1382 fd = open(buf, mode, 0666);
1383 }
1384 return fd;
1385 }
1386
1387 /**
1388 * Construct file name for a log file and return it's file descriptor.
1389 * Name and location depends on pattern, default_pattern params and access
1390 * permissions.
1391 */
1392 int VMError::prepare_log_file(const char* pattern, const char* default_pattern, bool overwrite_existing, char* buf, size_t buflen) {
1393 int fd = -1;
1394
1395 // If possible, use specified pattern to construct log file name
1396 if (pattern != NULL) {
1397 fd = expand_and_open(pattern, overwrite_existing, buf, buflen, 0);
1398 }
1399
1400 // Either user didn't specify, or the user's location failed,
1401 // so use the default name in the current directory
1402 if (fd == -1) {
1403 const char* cwd = os::get_current_directory(buf, buflen);
1404 if (cwd != NULL) {
1405 size_t pos = strlen(cwd);
1406 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
1407 pos += fsep_len;
1408 if (fsep_len > 0) {
1409 fd = expand_and_open(default_pattern, overwrite_existing, buf, buflen, pos);
1410 }
1411 }
1412 }
1413
1414 // try temp directory if it exists.
1415 if (fd == -1) {
1416 const char* tmpdir = os::get_temp_directory();
1417 if (tmpdir != NULL && strlen(tmpdir) > 0) {
1418 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
1419 if (pos > 0) {
1420 fd = expand_and_open(default_pattern, overwrite_existing, buf, buflen, pos);
1421 }
1422 }
1423 }
1424
1425 return fd;
1426 }
1427
1428 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo,
1429 void* context, const char* detail_fmt, ...)
1430 {
1431 va_list detail_args;
1432 va_start(detail_args, detail_fmt);
1433 report_and_die(sig, NULL, detail_fmt, detail_args, thread, pc, siginfo, context, NULL, 0, 0);
1434 va_end(detail_args);
1435 }
1436
1437 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context)
1438 {
1439 report_and_die(thread, sig, pc, siginfo, context, "%s", "");
1440 }
1441
1442 void VMError::report_and_die(Thread* thread, void* context, const char* filename, int lineno, const char* message,
1443 const char* detail_fmt, va_list detail_args)
1444 {
1445 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, thread, NULL, NULL, context, filename, lineno, 0);
1446 }
1447
1448 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, size_t size,
1449 VMErrorType vm_err_type, const char* detail_fmt, va_list detail_args) {
1450 report_and_die(vm_err_type, NULL, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, size);
1451 }
1452
1453 void VMError::report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args,
1454 Thread* thread, address pc, void* siginfo, void* context, const char* filename,
1455 int lineno, size_t size)
1456 {
1457 // A single scratch buffer to be used from here on.
1458 // Do not rely on it being preserved across function calls.
1459 static char buffer[O_BUFLEN];
1460
1461 // File descriptor to tty to print an error summary to.
1462 // Hard wired to stdout; see JDK-8215004 (compatibility concerns).
1463 static const int fd_out = 1; // stdout
1464
1465 // File descriptor to the error log file.
1466 static int fd_log = -1;
1467
1468 #ifdef CAN_SHOW_REGISTERS_ON_ASSERT
1469 // Disarm assertion poison page, since from this point on we do not need this mechanism anymore and it may
1470 // cause problems in error handling during native OOM, see JDK-8227275.
1471 disarm_assert_poison();
1472 #endif
1473
1474 // Use local fdStream objects only. Do not use global instances whose initialization
1475 // relies on dynamic initialization (see JDK-8214975). Do not rely on these instances
1476 // to carry over into recursions or invocations from other threads.
1477 fdStream out(fd_out);
1478 out.set_scratch_buffer(buffer, sizeof(buffer));
1479
1480 // Depending on the re-entrance depth at this point, fd_log may be -1 or point to an open hs-err file.
1481 fdStream log(fd_log);
1482 log.set_scratch_buffer(buffer, sizeof(buffer));
1483
1484 // How many errors occurred in error handler when reporting first_error.
1485 static int recursive_error_count;
1486
1487 // We will first print a brief message to standard out (verbose = false),
1488 // then save detailed information in log file (verbose = true).
1489 static bool out_done = false; // done printing to standard out
1490 static bool log_done = false; // done saving error log
1491
1492 intptr_t mytid = os::current_thread_id();
1493 if (_first_error_tid == -1 &&
1494 Atomic::cmpxchg(&_first_error_tid, (intptr_t)-1, mytid) == -1) {
1495
1496 if (SuppressFatalErrorMessage) {
1497 os::abort(CreateCoredumpOnCrash);
1498 }
1499
1500 // Initialize time stamps to use the same base.
1501 out.time_stamp().update_to(1);
1502 log.time_stamp().update_to(1);
1503
1504 _id = id;
1505 _message = message;
1506 _thread = thread;
1507 _pc = pc;
1508 _siginfo = siginfo;
1509 _context = context;
1510 _filename = filename;
1511 _lineno = lineno;
1512 _size = size;
1513 jio_vsnprintf(_detail_msg, sizeof(_detail_msg), detail_fmt, detail_args);
1514
1515 reporting_started();
1516 if (!TestUnresponsiveErrorHandler) {
1517 // Record reporting_start_time unless we're running the
1518 // TestUnresponsiveErrorHandler test. For that test we record
1519 // reporting_start_time at the beginning of the test.
1520 record_reporting_start_time();
1521 } else {
1522 out.print_raw_cr("Delaying recording reporting_start_time for TestUnresponsiveErrorHandler.");
1523 }
1524
1525 if (ShowMessageBoxOnError || PauseAtExit) {
1526 show_message_box(buffer, sizeof(buffer));
1527
1528 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
1529 // WatcherThread can kill JVM if the error handler hangs.
1530 ShowMessageBoxOnError = false;
1531 }
1532
1533 os::check_dump_limit(buffer, sizeof(buffer));
1534
1535 // reset signal handlers or exception filter; make sure recursive crashes
1536 // are handled properly.
1537 install_secondary_signal_handler();
1538 } else {
1539 #if defined(_WINDOWS)
1540 // If UseOSErrorReporting we call this for each level of the call stack
1541 // while searching for the exception handler. Only the first level needs
1542 // to be reported.
1543 if (UseOSErrorReporting && log_done) return;
1544 #endif
1545
1546 // This is not the first error, see if it happened in a different thread
1547 // or in the same thread during error reporting.
1548 if (_first_error_tid != mytid) {
1549 if (!SuppressFatalErrorMessage) {
1550 char msgbuf[64];
1551 jio_snprintf(msgbuf, sizeof(msgbuf),
1552 "[thread " INTX_FORMAT " also had an error]",
1553 mytid);
1554 out.print_raw_cr(msgbuf);
1555 }
1556
1557 // Error reporting is not MT-safe, nor can we let the current thread
1558 // proceed, so we block it.
1559 os::infinite_sleep();
1560
1561 } else {
1562 if (recursive_error_count++ > 30) {
1563 if (!SuppressFatalErrorMessage) {
1564 out.print_raw_cr("[Too many errors, abort]");
1565 }
1566 os::die();
1567 }
1568
1569 if (SuppressFatalErrorMessage) {
1570 // If we already hit a secondary error during abort, then calling
1571 // it again is likely to hit another one. But eventually, if we
1572 // don't deadlock somewhere, we will call os::die() above.
1573 os::abort(CreateCoredumpOnCrash);
1574 }
1575
1576 outputStream* const st = log.is_open() ? &log : &out;
1577 st->cr();
1578
1579 // Timeout handling.
1580 if (_step_did_timeout) {
1581 // The current step had a timeout. Lets continue reporting with the next step.
1582 st->print_raw("[timeout occurred during error reporting in step \"");
1583 st->print_raw(_current_step_info);
1584 st->print_cr("\"] after " INT64_FORMAT " s.",
1585 (int64_t)
1586 ((get_current_timestamp() - _step_start_time) / TIMESTAMP_TO_SECONDS_FACTOR));
1587 } else if (_reporting_did_timeout) {
1588 // We hit ErrorLogTimeout. Reporting will stop altogether. Let's wrap things
1589 // up, the process is about to be stopped by the WatcherThread.
1590 st->print_cr("------ Timeout during error reporting after " INT64_FORMAT " s. ------",
1591 (int64_t)
1592 ((get_current_timestamp() - _reporting_start_time) / TIMESTAMP_TO_SECONDS_FACTOR));
1593 st->flush();
1594 // Watcherthread is about to call os::die. Lets just wait.
1595 os::infinite_sleep();
1596 } else {
1597 // Crash or assert during error reporting. Lets continue reporting with the next step.
1598 stringStream ss(buffer, sizeof(buffer));
1599 // Note: this string does get parsed by a number of jtreg tests,
1600 // see hotspot/jtreg/runtime/ErrorHandling.
1601 ss.print("[error occurred during error reporting (%s), id 0x%x",
1602 _current_step_info, id);
1603 char signal_name[64];
1604 if (os::exception_name(id, signal_name, sizeof(signal_name))) {
1605 ss.print(", %s (0x%x) at pc=" PTR_FORMAT, signal_name, id, p2i(pc));
1606 } else {
1607 if (should_report_bug(id)) {
1608 ss.print(", Internal Error (%s:%d)",
1609 filename == NULL ? "??" : filename, lineno);
1610 } else {
1611 ss.print(", Out of Memory Error (%s:%d)",
1612 filename == NULL ? "??" : filename, lineno);
1613 }
1614 }
1615 ss.print("]");
1616 st->print_raw_cr(buffer);
1617 st->cr();
1618 }
1619 }
1620 }
1621
1622 // Part 1: print an abbreviated version (the '#' section) to stdout.
1623 if (!out_done) {
1624 // Suppress this output if we plan to print Part 2 to stdout too.
1625 // No need to have the "#" section twice.
1626 if (!(ErrorFileToStdout && out.fd() == 1)) {
1627 report(&out, false);
1628 }
1629
1630 out_done = true;
1631
1632 _current_step = 0;
1633 _current_step_info = "";
1634 }
1635
1636 // Part 2: print a full error log file (optionally to stdout or stderr).
1637 // print to error log file
1638 if (!log_done) {
1639 // see if log file is already open
1640 if (!log.is_open()) {
1641 // open log file
1642 if (ErrorFileToStdout) {
1643 fd_log = 1;
1644 } else if (ErrorFileToStderr) {
1645 fd_log = 2;
1646 } else {
1647 fd_log = prepare_log_file(ErrorFile, "hs_err_pid%p.log", true,
1648 buffer, sizeof(buffer));
1649 if (fd_log != -1) {
1650 out.print_raw("# An error report file with more information is saved as:\n# ");
1651 out.print_raw_cr(buffer);
1652 } else {
1653 out.print_raw_cr("# Can not save log file, dump to screen..");
1654 fd_log = 1;
1655 }
1656 }
1657 log.set_fd(fd_log);
1658 }
1659
1660 report(&log, true);
1661 log_done = true;
1662 _current_step = 0;
1663 _current_step_info = "";
1664
1665 if (fd_log > 3) {
1666 ::close(fd_log);
1667 fd_log = -1;
1668 }
1669
1670 log.set_fd(-1);
1671 }
1672
1673 JFR_ONLY(Jfr::on_vm_shutdown(true);)
1674
1675 if (PrintNMTStatistics) {
1676 fdStream fds(fd_out);
1677 MemTracker::final_report(&fds);
1678 }
1679
1680 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay
1681 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1682 skip_replay = true;
1683 ciEnv* env = ciEnv::current();
1684 if (env != NULL) {
1685 const bool overwrite = false; // We do not overwrite an existing replay file.
1686 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", overwrite, buffer, sizeof(buffer));
1687 if (fd != -1) {
1688 FILE* replay_data_file = os::fdopen(fd, "w");
1689 if (replay_data_file != NULL) {
1690 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1691 env->dump_replay_data_unsafe(&replay_data_stream);
1692 out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1693 out.print_raw_cr(buffer);
1694 } else {
1695 int e = errno;
1696 out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1697 out.print_raw_cr(os::strerror(e));
1698 }
1699 }
1700 }
1701 }
1702
1703 #if INCLUDE_JVMCI
1704 if (JVMCI::fatal_log_filename() != NULL) {
1705 out.print_raw("#\n# The JVMCI shared library error report file is saved as:\n# ");
1706 out.print_raw_cr(JVMCI::fatal_log_filename());
1707 }
1708 #endif
1709
1710 static bool skip_bug_url = !should_submit_bug_report(_id);
1711 if (!skip_bug_url) {
1712 skip_bug_url = true;
1713
1714 out.print_raw_cr("#");
1715 print_bug_submit_message(&out, _thread);
1716 }
1717
1718 static bool skip_OnError = false;
1719 if (!skip_OnError && OnError && OnError[0]) {
1720 skip_OnError = true;
1721
1722 // Flush output and finish logs before running OnError commands.
1723 ostream_abort();
1724
1725 out.print_raw_cr("#");
1726 out.print_raw ("# -XX:OnError=\"");
1727 out.print_raw (OnError);
1728 out.print_raw_cr("\"");
1729
1730 char* cmd;
1731 const char* ptr = OnError;
1732 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1733 out.print_raw ("# Executing ");
1734 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1735 out.print_raw ("/bin/sh -c ");
1736 #elif defined(_WINDOWS)
1737 out.print_raw ("cmd /C ");
1738 #endif
1739 out.print_raw ("\"");
1740 out.print_raw (cmd);
1741 out.print_raw_cr("\" ...");
1742
1743 if (os::fork_and_exec(cmd) < 0) {
1744 out.print_cr("os::fork_and_exec failed: %s (%s=%d)",
1745 os::strerror(errno), os::errno_name(errno), errno);
1746 }
1747 }
1748
1749 // done with OnError
1750 OnError = NULL;
1751 }
1752
1753 if (WINDOWS_ONLY(!UseOSErrorReporting) NOT_WINDOWS(true)) {
1754 // os::abort() will call abort hooks, try it first.
1755 static bool skip_os_abort = false;
1756 if (!skip_os_abort) {
1757 skip_os_abort = true;
1758 bool dump_core = should_report_bug(_id);
1759 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context);
1760 }
1761
1762 // if os::abort() doesn't abort, try os::die();
1763 os::die();
1764 }
1765 }
1766
1767 /*
1768 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1769 * ensures utilities such as jmap can observe the process is a consistent state.
1770 */
1771 class VM_ReportJavaOutOfMemory : public VM_Operation {
1772 private:
1773 const char* _message;
1774 public:
1775 VM_ReportJavaOutOfMemory(const char* message) { _message = message; }
1776 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
1777 void doit();
1778 };
1779
1780 void VM_ReportJavaOutOfMemory::doit() {
1781 // Don't allocate large buffer on stack
1782 static char buffer[O_BUFLEN];
1783
1784 tty->print_cr("#");
1785 tty->print_cr("# java.lang.OutOfMemoryError: %s", _message);
1786 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1787
1788 // make heap parsability
1789 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
1790
1791 char* cmd;
1792 const char* ptr = OnOutOfMemoryError;
1793 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1794 tty->print("# Executing ");
1795 #if defined(LINUX)
1796 tty->print ("/bin/sh -c ");
1797 #endif
1798 tty->print_cr("\"%s\"...", cmd);
1799
1800 if (os::fork_and_exec(cmd) < 0) {
1801 tty->print_cr("os::fork_and_exec failed: %s (%s=%d)",
1802 os::strerror(errno), os::errno_name(errno), errno);
1803 }
1804 }
1805 }
1806
1807 void VMError::report_java_out_of_memory(const char* message) {
1808 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1809 MutexLocker ml(Heap_lock);
1810 VM_ReportJavaOutOfMemory op(message);
1811 VMThread::execute(&op);
1812 }
1813 }
1814
1815 void VMError::show_message_box(char *buf, int buflen) {
1816 bool yes;
1817 do {
1818 error_string(buf, buflen);
1819 yes = os::start_debugging(buf,buflen);
1820 } while (yes);
1821 }
1822
1823 // Timeout handling: check if a timeout happened (either a single step did
1824 // timeout or the whole of error reporting hit ErrorLogTimeout). Interrupt
1825 // the reporting thread if that is the case.
1826 bool VMError::check_timeout() {
1827
1828 if (ErrorLogTimeout == 0) {
1829 return false;
1830 }
1831
1832 // Do not check for timeouts if we still have a message box to show to the
1833 // user or if there are OnError handlers to be run.
1834 if (ShowMessageBoxOnError
1835 || (OnError != NULL && OnError[0] != '\0')
1836 || Arguments::abort_hook() != NULL) {
1837 return false;
1838 }
1839
1840 const jlong reporting_start_time_l = get_reporting_start_time();
1841 const jlong now = get_current_timestamp();
1842 // Timestamp is stored in nanos.
1843 if (reporting_start_time_l > 0) {
1844 const jlong end = reporting_start_time_l + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR;
1845 if (end <= now && !_reporting_did_timeout) {
1846 // We hit ErrorLogTimeout and we haven't interrupted the reporting
1847 // thread yet.
1848 _reporting_did_timeout = true;
1849 interrupt_reporting_thread();
1850 return true; // global timeout
1851 }
1852 }
1853
1854 const jlong step_start_time_l = get_step_start_time();
1855 if (step_start_time_l > 0) {
1856 // A step times out after a quarter of the total timeout. Steps are mostly fast unless they
1857 // hang for some reason, so this simple rule allows for three hanging step and still
1858 // hopefully leaves time enough for the rest of the steps to finish.
1859 const jlong end = step_start_time_l + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR / 4;
1860 if (end <= now && !_step_did_timeout) {
1861 // The step timed out and we haven't interrupted the reporting
1862 // thread yet.
1863 _step_did_timeout = true;
1864 interrupt_reporting_thread();
1865 return false; // (Not a global timeout)
1866 }
1867 }
1868
1869 return false;
1870
1871 }
1872
1873 #ifdef ASSERT
1874 typedef void (*voidfun_t)();
1875
1876 // Crash with an authentic sigfpe
1877 volatile int sigfpe_int = 0;
1878 static void crash_with_sigfpe() {
1879
1880 // generate a native synchronous SIGFPE where possible;
1881 sigfpe_int = sigfpe_int/sigfpe_int;
1882
1883 // if that did not cause a signal (e.g. on ppc), just
1884 // raise the signal.
1885 #ifndef _WIN32
1886 // OSX implements raise(sig) incorrectly so we need to
1887 // explicitly target the current thread
1888 pthread_kill(pthread_self(), SIGFPE);
1889 #endif
1890
1891 } // end: crash_with_sigfpe
1892
1893 // crash with sigsegv at non-null address.
1894 static void crash_with_segfault() {
1895
1896 int* crash_addr = reinterpret_cast<int*>(VMError::segfault_address);
1897 *crash_addr = 1;
1898
1899 } // end: crash_with_segfault
1900
1901 // crash in a controlled way:
1902 // 1 - assert
1903 // 2 - guarantee
1904 // 14 - SIGSEGV
1905 // 15 - SIGFPE
1906 void VMError::controlled_crash(int how) {
1907
1908 // Case 14 is tested by test/hotspot/jtreg/runtime/ErrorHandling/SafeFetchInErrorHandlingTest.java.
1909 // Case 15 is tested by test/hotspot/jtreg/runtime/ErrorHandling/SecondaryErrorTest.java.
1910 // Case 16 is tested by test/hotspot/jtreg/runtime/ErrorHandling/ThreadsListHandleInErrorHandlingTest.java.
1911 // Case 17 is tested by test/hotspot/jtreg/runtime/ErrorHandling/NestedThreadsListHandleInErrorHandlingTest.java.
1912
1913 // We try to grab Threads_lock to keep ThreadsSMRSupport::print_info_on()
1914 // from racing with Threads::add() or Threads::remove() as we
1915 // generate the hs_err_pid file. This makes our ErrorHandling tests
1916 // more stable.
1917 if (!Threads_lock->owned_by_self()) {
1918 Threads_lock->try_lock();
1919 // The VM is going to die so no need to unlock Thread_lock.
1920 }
1921
1922 switch (how) {
1923 case 1: assert(how == 0, "test assert"); break;
1924 case 2: guarantee(how == 0, "test guarantee"); break;
1925
1926 // The other cases are unused.
1927 case 14: crash_with_segfault(); break;
1928 case 15: crash_with_sigfpe(); break;
1929 case 16: {
1930 ThreadsListHandle tlh;
1931 fatal("Force crash with an active ThreadsListHandle.");
1932 }
1933 case 17: {
1934 ThreadsListHandle tlh;
1935 {
1936 ThreadsListHandle tlh2;
1937 fatal("Force crash with a nested ThreadsListHandle.");
1938 }
1939 }
1940 default:
1941 // If another number is given, give a generic crash.
1942 fatal("Crashing with number %d", how);
1943 }
1944 tty->print_cr("controlled_crash: survived intentional crash. Did you suppress the assert?");
1945 ShouldNotReachHere();
1946 }
1947 #endif // !ASSERT