1 /*
2 * Copyright (c) 2003, 2023, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2017, 2020 SAP SE. All rights reserved.
4 * Copyright (c) 2023, Red Hat, Inc. and/or its affiliates.
5 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 *
7 * This code is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 only, as
9 * published by the Free Software Foundation.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 *
25 */
26
27 #include "precompiled.hpp"
28 #include "cds/metaspaceShared.hpp"
29 #include "code/codeCache.hpp"
30 #include "compiler/compilationFailureInfo.hpp"
31 #include "compiler/compileBroker.hpp"
32 #include "compiler/disassembler.hpp"
33 #include "gc/shared/gcConfig.hpp"
34 #include "gc/shared/gcLogPrecious.hpp"
35 #include "jvm.h"
36 #include "logging/logConfiguration.hpp"
37 #include "memory/allocation.hpp"
38 #include "memory/metaspace.hpp"
39 #include "memory/metaspaceUtils.hpp"
40 #include "memory/resourceArea.inline.hpp"
41 #include "memory/universe.hpp"
42 #include "nmt/memTracker.hpp"
43 #include "oops/compressedOops.hpp"
44 #include "prims/whitebox.hpp"
45 #include "runtime/arguments.hpp"
46 #include "runtime/atomic.hpp"
47 #include "runtime/flags/jvmFlag.hpp"
48 #include "runtime/frame.inline.hpp"
49 #include "runtime/init.hpp"
50 #include "runtime/javaThread.inline.hpp"
51 #include "runtime/os.inline.hpp"
52 #include "runtime/osThread.hpp"
53 #include "runtime/safefetch.hpp"
54 #include "runtime/safepointMechanism.hpp"
55 #include "runtime/stackFrameStream.inline.hpp"
56 #include "runtime/stackOverflow.hpp"
57 #include "runtime/threads.hpp"
58 #include "runtime/threadSMR.hpp"
59 #include "runtime/trimNativeHeap.hpp"
60 #include "runtime/vmOperations.hpp"
61 #include "runtime/vmThread.hpp"
62 #include "runtime/vm_version.hpp"
63 #include "utilities/debug.hpp"
64 #include "utilities/decoder.hpp"
65 #include "utilities/defaultStream.hpp"
66 #include "utilities/events.hpp"
67 #include "utilities/globalDefinitions.hpp"
68 #include "utilities/macros.hpp"
69 #include "utilities/ostream.hpp"
70 #include "utilities/vmError.hpp"
71 #if INCLUDE_JFR
72 #include "jfr/jfr.hpp"
73 #endif
74 #if INCLUDE_JVMCI
75 #include "jvmci/jvmci.hpp"
76 #endif
77
78 #ifndef PRODUCT
79 #include <signal.h>
80 #endif // PRODUCT
81
82 bool VMError::coredump_status;
83 char VMError::coredump_message[O_BUFLEN];
84 int VMError::_current_step;
85 const char* VMError::_current_step_info;
86 volatile jlong VMError::_reporting_start_time = -1;
87 volatile bool VMError::_reporting_did_timeout = false;
88 volatile jlong VMError::_step_start_time = -1;
89 volatile bool VMError::_step_did_timeout = false;
90 volatile bool VMError::_step_did_succeed = false;
91 volatile intptr_t VMError::_first_error_tid = -1;
92 int VMError::_id;
93 const char* VMError::_message;
94 char VMError::_detail_msg[1024];
95 Thread* VMError::_thread;
96 address VMError::_pc;
97 void* VMError::_siginfo;
98 void* VMError::_context;
99 bool VMError::_print_native_stack_used = false;
100 const char* VMError::_filename;
101 int VMError::_lineno;
102 size_t VMError::_size;
103 const size_t VMError::_reattempt_required_stack_headroom = 64 * K;
104 const intptr_t VMError::segfault_address = pd_segfault_address;
105
106 // List of environment variables that should be reported in error log file.
107 static const char* env_list[] = {
108 // All platforms
109 "JAVA_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
110 "PATH", "USERNAME",
111
112 "XDG_CACHE_HOME", "XDG_CONFIG_HOME", "FC_LANG", "FONTCONFIG_USE_MMAP",
113
114 // Env variables that are defined on Linux/BSD
115 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
116 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
117 "LANG", "LC_ALL", "LC_CTYPE", "LC_NUMERIC", "LC_TIME",
118 "TERM", "TMPDIR", "TZ",
119
120 // defined on AIX
121 "LIBPATH", "LDR_PRELOAD", "LDR_PRELOAD64",
122
123 // defined on Linux/AIX/BSD
124 "_JAVA_SR_SIGNUM",
125
126 // defined on Darwin
127 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
128 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
129 "DYLD_INSERT_LIBRARIES",
130
131 // defined on Windows
132 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR", "TMP", "TEMP",
133
134 (const char *)0
135 };
136
137 // A simple parser for -XX:OnError, usage:
138 // ptr = OnError;
139 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != nullptr)
140 // ... ...
141 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
142 if (ptr == nullptr || *ptr == nullptr) return nullptr;
143
144 const char* cmd = *ptr;
145
146 // skip leading blanks or ';'
147 while (*cmd == ' ' || *cmd == ';') cmd++;
148
149 if (*cmd == '\0') return nullptr;
150
151 const char * cmdend = cmd;
152 while (*cmdend != '\0' && *cmdend != ';') cmdend++;
153
154 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
155
156 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
157 return buf;
158 }
159
160 static void print_bug_submit_message(outputStream *out, Thread *thread) {
161 if (out == nullptr) return;
162 const char *url = Arguments::java_vendor_url_bug();
163 if (url == nullptr || *url == '\0')
164 url = JDK_Version::runtime_vendor_vm_bug_url();
165 if (url != nullptr && *url != '\0') {
166 out->print_raw_cr("# If you would like to submit a bug report, please visit:");
167 out->print_raw ("# ");
168 out->print_raw_cr(url);
169 }
170 // If the crash is in native code, encourage user to submit a bug to the
171 // provider of that code.
172 if (thread && thread->is_Java_thread() &&
173 !thread->is_hidden_from_external_view()) {
174 if (JavaThread::cast(thread)->thread_state() == _thread_in_native) {
175 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
176 }
177 }
178 out->print_raw_cr("#");
179 }
180
181 static bool stack_has_headroom(size_t headroom) {
182 size_t stack_size = 0;
183 address stack_base = nullptr;
184 os::current_stack_base_and_size(&stack_base, &stack_size);
185
186 const size_t guard_size = StackOverflow::stack_guard_zone_size();
187 const size_t unguarded_stack_size = stack_size - guard_size;
188
189 if (unguarded_stack_size < headroom) {
190 return false;
191 }
192
193 const address unguarded_stack_end = stack_base - unguarded_stack_size;
194 const address stack_pointer = os::current_stack_pointer();
195
196 return stack_pointer >= unguarded_stack_end + headroom;
197 }
198
199 #ifdef ASSERT
200 PRAGMA_DIAG_PUSH
201 PRAGMA_INFINITE_RECURSION_IGNORED
202 void VMError::reattempt_test_hit_stack_limit(outputStream* st) {
203 if (stack_has_headroom(_reattempt_required_stack_headroom)) {
204 // Use all but (_reattempt_required_stack_headroom - K) unguarded stack space.
205 size_t stack_size = 0;
206 address stack_base = nullptr;
207 os::current_stack_base_and_size(&stack_base, &stack_size);
208
209 const size_t guard_size = StackOverflow::stack_guard_zone_size();
210 const address stack_pointer = os::current_stack_pointer();
211
212 const size_t unguarded_stack_size = stack_size - guard_size;
213 const address unguarded_stack_end = stack_base - unguarded_stack_size;
214 const size_t available_headroom = stack_pointer - unguarded_stack_end;
215 const size_t allocation_size = available_headroom - _reattempt_required_stack_headroom + K;
216
217 st->print_cr("Current Stack Pointer: " PTR_FORMAT " alloca " SIZE_FORMAT
218 " of " SIZE_FORMAT " bytes available unguarded stack space",
219 p2i(stack_pointer), allocation_size, available_headroom);
220
221 // Allocate byte blob on the stack. Make pointer volatile to avoid having
222 // the compiler removing later reads.
223 volatile char* stack_buffer = static_cast<char*>(alloca(allocation_size));
224 // Initialize the last byte.
225 stack_buffer[allocation_size - 1] = '\0';
226 // Recursive call should hit the stack limit.
227 reattempt_test_hit_stack_limit(st);
228 // Perform a volatile read of the last byte to avoid having the complier
229 // remove the allocation.
230 static_cast<void>(stack_buffer[allocation_size - 1] == '\0');
231 }
232 controlled_crash(14);
233 }
234 PRAGMA_DIAG_POP
235 #endif // ASSERT
236
237 bool VMError::can_reattempt_step(const char* &stop_reason) {
238 if (!stack_has_headroom(_reattempt_required_stack_headroom)) {
239 stop_reason = "Stack headroom limit reached";
240 return false;
241 }
242
243 if (_step_did_timeout) {
244 stop_reason = "Step time limit reached";
245 return false;
246 }
247
248 return true;
249 }
250
251 void VMError::record_coredump_status(const char* message, bool status) {
252 coredump_status = status;
253 strncpy(coredump_message, message, sizeof(coredump_message));
254 coredump_message[sizeof(coredump_message)-1] = 0;
255 }
256
257 // Return a string to describe the error
258 char* VMError::error_string(char* buf, int buflen) {
259 char signame_buf[64];
260 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
261
262 if (signame) {
263 jio_snprintf(buf, buflen,
264 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT,
265 signame, _id, _pc,
266 os::current_process_id(), os::current_thread_id());
267 } else if (_filename != nullptr && _lineno > 0) {
268 // skip directory names
269 int n = jio_snprintf(buf, buflen,
270 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT,
271 get_filename_only(), _lineno,
272 os::current_process_id(), os::current_thread_id());
273 if (n >= 0 && n < buflen && _message) {
274 if (strlen(_detail_msg) > 0) {
275 jio_snprintf(buf + n, buflen - n, "%s%s: %s",
276 os::line_separator(), _message, _detail_msg);
277 } else {
278 jio_snprintf(buf + n, buflen - n, "%sError: %s",
279 os::line_separator(), _message);
280 }
281 }
282 } else {
283 jio_snprintf(buf, buflen,
284 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT,
285 _id, os::current_process_id(), os::current_thread_id());
286 }
287
288 return buf;
289 }
290
291 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
292 char* buf, int buflen, bool verbose) {
293 #ifdef ZERO
294 if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
295 // StackFrameStream uses the frame anchor, which may not have
296 // been set up. This can be done at any time in Zero, however,
297 // so if it hasn't been set up then we just set it up now and
298 // clear it again when we're done.
299 bool has_last_Java_frame = jt->has_last_Java_frame();
300 if (!has_last_Java_frame)
301 jt->set_last_Java_frame();
302 st->print("Java frames:");
303 st->cr();
304
305 // Print the frames
306 StackFrameStream sfs(jt, true /* update */, true /* process_frames */);
307 for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
308 sfs.current()->zero_print_on_error(i, st, buf, buflen);
309 st->cr();
310 }
311
312 // Reset the frame anchor if necessary
313 if (!has_last_Java_frame)
314 jt->reset_last_Java_frame();
315 }
316 #else
317 if (jt->has_last_Java_frame()) {
318 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
319 for (StackFrameStream sfs(jt, true /* update */, true /* process_frames */); !sfs.is_done(); sfs.next()) {
320 sfs.current()->print_on_error(st, buf, buflen, verbose);
321 st->cr();
322 }
323 }
324 #endif // ZERO
325 }
326
327 /**
328 * Adds `value` to `list` iff it's not already present and there is sufficient
329 * capacity (i.e. length(list) < `list_capacity`). The length of the list
330 * is the index of the first nullptr entry or `list_capacity` if there are
331 * no nullptr entries.
332 *
333 * @ return true if the value was added, false otherwise
334 */
335 static bool add_if_absent(address value, address* list, int list_capacity) {
336 for (int i = 0; i < list_capacity; i++) {
337 if (list[i] == value) {
338 return false;
339 }
340 if (list[i] == nullptr) {
341 list[i] = value;
342 if (i + 1 < list_capacity) {
343 list[i + 1] = nullptr;
344 }
345 return true;
346 }
347 }
348 return false;
349 }
350
351 /**
352 * Prints the VM generated code unit, if any, containing `pc` if it has not already
353 * been printed. If the code unit is an InterpreterCodelet or StubCodeDesc, it is
354 * only printed if `is_crash_pc` is true.
355 *
356 * @param printed array of code units that have already been printed (delimited by nullptr entry)
357 * @param printed_capacity the capacity of `printed`
358 * @return true if the code unit was printed, false otherwise
359 */
360 static bool print_code(outputStream* st, Thread* thread, address pc, bool is_crash_pc,
361 address* printed, int printed_capacity) {
362 if (Interpreter::contains(pc)) {
363 if (is_crash_pc) {
364 // The interpreter CodeBlob is very large so try to print the codelet instead.
365 InterpreterCodelet* codelet = Interpreter::codelet_containing(pc);
366 if (codelet != nullptr) {
367 if (add_if_absent((address) codelet, printed, printed_capacity)) {
368 codelet->print_on(st);
369 Disassembler::decode(codelet->code_begin(), codelet->code_end(), st);
370 return true;
371 }
372 }
373 }
374 } else {
375 StubCodeDesc* desc = StubCodeDesc::desc_for(pc);
376 if (desc != nullptr) {
377 if (is_crash_pc) {
378 if (add_if_absent((address) desc, printed, printed_capacity)) {
379 desc->print_on(st);
380 Disassembler::decode(desc->begin(), desc->end(), st);
381 return true;
382 }
383 }
384 } else if (thread != nullptr) {
385 CodeBlob* cb = CodeCache::find_blob(pc);
386 if (cb != nullptr && add_if_absent((address) cb, printed, printed_capacity)) {
387 // Disassembling nmethod will incur resource memory allocation,
388 // only do so when thread is valid.
389 ResourceMark rm(thread);
390 Disassembler::decode(cb, st);
391 st->cr();
392 return true;
393 }
394 }
395 }
396 return false;
397 }
398
399 // Like above, but only try to figure out a short name. Return nullptr if not found.
400 static const char* find_code_name(address pc) {
401 if (Interpreter::contains(pc)) {
402 InterpreterCodelet* codelet = Interpreter::codelet_containing(pc);
403 if (codelet != nullptr) {
404 return codelet->description();
405 }
406 } else {
407 StubCodeDesc* desc = StubCodeDesc::desc_for(pc);
408 if (desc != nullptr) {
409 return desc->name();
410 } else {
411 CodeBlob* cb = CodeCache::find_blob(pc);
412 if (cb != nullptr) {
413 return cb->name();
414 }
415 }
416 }
417 return nullptr;
418 }
419
420 /**
421 * Gets the caller frame of `fr`.
422 *
423 * @returns an invalid frame (i.e. fr.pc() === 0) if the caller cannot be obtained
424 */
425 static frame next_frame(frame fr, Thread* t) {
426 // Compiled code may use EBP register on x86 so it looks like
427 // non-walkable C frame. Use frame.sender() for java frames.
428 frame invalid;
429 if (t != nullptr && t->is_Java_thread()) {
430 // Catch very first native frame by using stack address.
431 // For JavaThread stack_base and stack_size should be set.
432 if (!t->is_in_full_stack((address)(fr.real_fp() + 1))) {
433 return invalid;
434 }
435 if (fr.is_interpreted_frame() || (fr.cb() != nullptr && fr.cb()->frame_size() > 0)) {
436 RegisterMap map(JavaThread::cast(t),
437 RegisterMap::UpdateMap::skip,
438 RegisterMap::ProcessFrames::include,
439 RegisterMap::WalkContinuation::skip); // No update
440 return fr.sender(&map);
441 } else {
442 // is_first_C_frame() does only simple checks for frame pointer,
443 // it will pass if java compiled code has a pointer in EBP.
444 if (os::is_first_C_frame(&fr)) return invalid;
445 return os::get_sender_for_C_frame(&fr);
446 }
447 } else {
448 if (os::is_first_C_frame(&fr)) return invalid;
449 return os::get_sender_for_C_frame(&fr);
450 }
451 }
452
453 void VMError::print_native_stack(outputStream* st, frame fr, Thread* t, bool print_source_info, int max_frames, char* buf, int buf_size) {
454
455 // see if it's a valid frame
456 if (fr.pc()) {
457 st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)");
458 const int limit = max_frames == -1 ? StackPrintLimit : MIN2(max_frames, StackPrintLimit);
459 int count = 0;
460 while (count++ < limit) {
461 fr.print_on_error(st, buf, buf_size);
462 if (fr.pc()) { // print source file and line, if available
463 char filename[128];
464 int line_no;
465 if (count == 1 && _lineno != 0) {
466 // We have source information of the first frame for internal errors. There is no need to parse it from the symbols.
467 st->print(" (%s:%d)", get_filename_only(), _lineno);
468 } else if (print_source_info &&
469 Decoder::get_source_info(fr.pc(), filename, sizeof(filename), &line_no, count != 1)) {
470 st->print(" (%s:%d)", filename, line_no);
471 }
472 }
473 st->cr();
474 fr = next_frame(fr, t);
475 if (fr.pc() == nullptr) {
476 break;
477 }
478 }
479
480 if (count > limit) {
481 st->print_cr("...<more frames>...");
482 }
483
484 } else {
485 st->print_cr("Native frames: <unavailable>");
486 }
487 }
488
489 static void print_oom_reasons(outputStream* st) {
490 st->print_cr("# Possible reasons:");
491 st->print_cr("# The system is out of physical RAM or swap space");
492 #ifdef LINUX
493 st->print_cr("# This process has exceeded the maximum number of memory mappings (check below");
494 st->print_cr("# for `/proc/sys/vm/max_map_count` and `Total number of mappings`)");
495 #endif
496 if (UseCompressedOops) {
497 st->print_cr("# This process is running with CompressedOops enabled, and the Java Heap may be blocking the growth of the native heap");
498 }
499 if (LogBytesPerWord == 2) {
500 st->print_cr("# In 32 bit mode, the process size limit was hit");
501 }
502 st->print_cr("# Possible solutions:");
503 st->print_cr("# Reduce memory load on the system");
504 st->print_cr("# Increase physical memory or swap space");
505 st->print_cr("# Check if swap backing store is full");
506 if (LogBytesPerWord == 2) {
507 st->print_cr("# Use 64 bit Java on a 64 bit OS");
508 }
509 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)");
510 st->print_cr("# Decrease number of Java threads");
511 st->print_cr("# Decrease Java thread stack sizes (-Xss)");
512 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize=");
513 if (UseCompressedOops) {
514 switch (CompressedOops::mode()) {
515 case CompressedOops::UnscaledNarrowOop:
516 st->print_cr("# JVM is running with Unscaled Compressed Oops mode in which the Java heap is");
517 st->print_cr("# placed in the first 4GB address space. The Java Heap base address is the");
518 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
519 st->print_cr("# to set the Java Heap base and to place the Java Heap above 4GB virtual address.");
520 break;
521 case CompressedOops::ZeroBasedNarrowOop:
522 st->print_cr("# JVM is running with Zero Based Compressed Oops mode in which the Java heap is");
523 st->print_cr("# placed in the first 32GB address space. The Java Heap base address is the");
524 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
525 st->print_cr("# to set the Java Heap base and to place the Java Heap above 32GB virtual address.");
526 break;
527 default:
528 break;
529 }
530 }
531 st->print_cr("# This output file may be truncated or incomplete.");
532 }
533
534 static void print_stack_location(outputStream* st, void* context, int& continuation) {
535 const int number_of_stack_slots = 8;
536
537 int i = continuation;
538 // Update continuation with next index before fetching frame
539 continuation = i + 1;
540 const frame fr = os::fetch_frame_from_context(context);
541 while (i < number_of_stack_slots) {
542 // Update continuation with next index before printing location
543 continuation = i + 1;
544 // decode stack contents if possible
545 const intptr_t *sp = fr.sp();
546 const intptr_t *slot = sp + i;
547 if (!is_aligned(slot, sizeof(intptr_t))) {
548 st->print_cr("Misaligned sp: " PTR_FORMAT, p2i(sp));
549 break;
550 } else if (os::is_readable_pointer(slot)) {
551 st->print("stack at sp + %d slots: ", i);
552 os::print_location(st, *(slot));
553 } else {
554 st->print_cr("unreadable stack slot at sp + %d", i);
555 }
556 ++i;
557 }
558 }
559
560 static void report_vm_version(outputStream* st, char* buf, int buflen) {
561 // VM version
562 st->print_cr("#");
563 JDK_Version::current().to_string(buf, buflen);
564 const char* runtime_name = JDK_Version::runtime_name() != nullptr ?
565 JDK_Version::runtime_name() : "";
566 const char* runtime_version = JDK_Version::runtime_version() != nullptr ?
567 JDK_Version::runtime_version() : "";
568 const char* vendor_version = JDK_Version::runtime_vendor_version() != nullptr ?
569 JDK_Version::runtime_vendor_version() : "";
570 const char* jdk_debug_level = VM_Version::printable_jdk_debug_level() != nullptr ?
571 VM_Version::printable_jdk_debug_level() : "";
572
573 st->print_cr("# JRE version: %s%s%s (%s) (%sbuild %s)", runtime_name,
574 (*vendor_version != '\0') ? " " : "", vendor_version,
575 buf, jdk_debug_level, runtime_version);
576
577 // This is the long version with some default settings added
578 st->print_cr("# Java VM: %s%s%s (%s%s, %s%s%s%s%s%s, %s, %s)",
579 VM_Version::vm_name(),
580 (*vendor_version != '\0') ? " " : "", vendor_version,
581 jdk_debug_level,
582 VM_Version::vm_release(),
583 VM_Version::vm_info_string(),
584 TieredCompilation ? ", tiered" : "",
585 #if INCLUDE_JVMCI
586 EnableJVMCI ? ", jvmci" : "",
587 UseJVMCICompiler ? ", jvmci compiler" : "",
588 #else
589 "", "",
590 #endif
591 UseCompressedOops ? ", compressed oops" : "",
592 UseCompressedClassPointers ? ", compressed class ptrs" : "",
593 GCConfig::hs_err_name(),
594 VM_Version::vm_platform_string()
595 );
596 }
597
598 // Returns true if at least one thread reported a fatal error and fatal error handling is in process.
599 bool VMError::is_error_reported() {
600 return _first_error_tid != -1;
601 }
602
603 // Returns true if the current thread reported a fatal error.
604 bool VMError::is_error_reported_in_current_thread() {
605 return _first_error_tid == os::current_thread_id();
606 }
607
608 // Helper, return current timestamp for timeout handling.
609 jlong VMError::get_current_timestamp() {
610 return os::javaTimeNanos();
611 }
612 // Factor to translate the timestamp to seconds.
613 #define TIMESTAMP_TO_SECONDS_FACTOR (1000 * 1000 * 1000)
614
615 void VMError::record_reporting_start_time() {
616 const jlong now = get_current_timestamp();
617 Atomic::store(&_reporting_start_time, now);
618 }
619
620 jlong VMError::get_reporting_start_time() {
621 return Atomic::load(&_reporting_start_time);
622 }
623
624 void VMError::record_step_start_time() {
625 const jlong now = get_current_timestamp();
626 Atomic::store(&_step_start_time, now);
627 }
628
629 jlong VMError::get_step_start_time() {
630 return Atomic::load(&_step_start_time);
631 }
632
633 void VMError::clear_step_start_time() {
634 return Atomic::store(&_step_start_time, (jlong)0);
635 }
636
637 // This is the main function to report a fatal error. Only one thread can
638 // call this function, so we don't need to worry about MT-safety. But it's
639 // possible that the error handler itself may crash or die on an internal
640 // error, for example, when the stack/heap is badly damaged. We must be
641 // able to handle recursive errors that happen inside error handler.
642 //
643 // Error reporting is done in several steps. If a crash or internal error
644 // occurred when reporting an error, the nested signal/exception handler
645 // can skip steps that are already (or partially) done. Error reporting will
646 // continue from the next step. This allows us to retrieve and print
647 // information that may be unsafe to get after a fatal error. If it happens,
648 // you may find nested report_and_die() frames when you look at the stack
649 // in a debugger.
650 //
651 // In general, a hang in error handler is much worse than a crash or internal
652 // error, as it's harder to recover from a hang. Deadlock can happen if we
653 // try to grab a lock that is already owned by current thread, or if the
654 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
655 // error handler and all the functions it called should avoid grabbing any
656 // lock. An important thing to notice is that memory allocation needs a lock.
657 //
658 // We should avoid using large stack allocated buffers. Many errors happen
659 // when stack space is already low. Making things even worse is that there
660 // could be nested report_and_die() calls on stack (see above). Only one
661 // thread can report error, so large buffers are statically allocated in data
662 // segment.
663 void VMError::report(outputStream* st, bool _verbose) {
664 // Used by reattempt step logic
665 static int continuation = 0;
666 const char* stop_reattempt_reason = nullptr;
667 # define BEGIN \
668 if (_current_step == 0) { \
669 _step_did_succeed = false; \
670 _current_step = __LINE__; \
671 {
672 // [Begin logic]
673
674 # define STEP_IF(s, cond) \
675 } \
676 _step_did_succeed = true; \
677 } \
678 if (_current_step < __LINE__) { \
679 _step_did_succeed = false; \
680 _current_step = __LINE__; \
681 _current_step_info = s; \
682 if ((cond)) { \
683 record_step_start_time(); \
684 _step_did_timeout = false;
685 // [Step logic]
686
687 # define STEP(s) STEP_IF(s, true)
688
689 # define REATTEMPT_STEP_IF(s, cond) \
690 } \
691 _step_did_succeed = true; \
692 } \
693 if (_current_step < __LINE__ && !_step_did_succeed) { \
694 _current_step = __LINE__; \
695 _current_step_info = s; \
696 const bool cond_value = (cond); \
697 if (cond_value && !can_reattempt_step( \
698 stop_reattempt_reason)) { \
699 st->print_cr("[stop reattempt (%s) reason: %s]", \
700 _current_step_info, \
701 stop_reattempt_reason); \
702 } else if (cond_value) {
703 // [Continue Step logic]
704
705 # define END \
706 } \
707 _step_did_succeed = true; \
708 clear_step_start_time(); \
709 }
710
711 // don't allocate large buffer on stack
712 static char buf[O_BUFLEN];
713
714 // Native stack trace may get stuck. We try to handle the last pc if it
715 // belongs to VM generated code.
716 address lastpc = nullptr;
717
718 BEGIN
719
720 STEP("printing fatal error message")
721 st->print_cr("#");
722 if (should_report_bug(_id)) {
723 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
724 } else {
725 st->print_cr("# There is insufficient memory for the Java "
726 "Runtime Environment to continue.");
727 }
728
729 // avoid the cache update for malloc/mmap errors
730 if (should_report_bug(_id)) {
731 os::prepare_native_symbols();
732 }
733
734 #ifdef ASSERT
735 // Error handler self tests
736 // Meaning of codes passed through in the tests.
737 #define TEST_SECONDARY_CRASH 14
738 #define TEST_REATTEMPT_SECONDARY_CRASH 15
739 #define TEST_RESOURCE_MARK_CRASH 2
740
741 // test secondary error handling. Test it twice, to test that resetting
742 // error handler after a secondary crash works.
743 STEP_IF("test secondary crash 1", _verbose && TestCrashInErrorHandler == TEST_SECONDARY_CRASH)
744 st->print_cr("Will crash now (TestCrashInErrorHandler=%u)...",
745 TestCrashInErrorHandler);
746 controlled_crash(TestCrashInErrorHandler);
747
748 STEP_IF("test secondary crash 2", _verbose && TestCrashInErrorHandler == TEST_SECONDARY_CRASH)
749 st->print_cr("Will crash now (TestCrashInErrorHandler=%u)...",
750 TestCrashInErrorHandler);
751 controlled_crash(TestCrashInErrorHandler);
752
753 // See corresponding test in test/runtime/ErrorHandling/ReattemptErrorTest.java
754 STEP_IF("test reattempt secondary crash",
755 _verbose && TestCrashInErrorHandler == TEST_REATTEMPT_SECONDARY_CRASH)
756 st->print_cr("Will crash now (TestCrashInErrorHandler=%u)...",
757 TestCrashInErrorHandler);
758 controlled_crash(14);
759
760 REATTEMPT_STEP_IF("test reattempt secondary crash, attempt 2",
761 _verbose && TestCrashInErrorHandler == TEST_REATTEMPT_SECONDARY_CRASH)
762 st->print_cr("test reattempt secondary crash. attempt 2");
763
764 REATTEMPT_STEP_IF("test reattempt secondary crash, attempt 3",
765 _verbose && TestCrashInErrorHandler == TEST_REATTEMPT_SECONDARY_CRASH)
766 st->print_cr("test reattempt secondary crash. attempt 3");
767
768 STEP_IF("test reattempt timeout",
769 _verbose && TestCrashInErrorHandler == TEST_REATTEMPT_SECONDARY_CRASH)
770 st->print_cr("test reattempt timeout");
771 os::infinite_sleep();
772
773 REATTEMPT_STEP_IF("test reattempt timeout, attempt 2",
774 _verbose && TestCrashInErrorHandler == TEST_REATTEMPT_SECONDARY_CRASH)
775 st->print_cr("test reattempt timeout, attempt 2");
776
777 STEP_IF("test reattempt stack headroom",
778 _verbose && TestCrashInErrorHandler == TEST_REATTEMPT_SECONDARY_CRASH)
779 st->print_cr("test reattempt stack headroom");
780 reattempt_test_hit_stack_limit(st);
781
782 REATTEMPT_STEP_IF("test reattempt stack headroom, attempt 2",
783 _verbose && TestCrashInErrorHandler == TEST_REATTEMPT_SECONDARY_CRASH)
784 st->print_cr("test reattempt stack headroom, attempt 2");
785
786 STEP_IF("test missing ResourceMark does not crash",
787 _verbose && TestCrashInErrorHandler == TEST_RESOURCE_MARK_CRASH)
788 stringStream message;
789 message.print("This is a message with no ResourceMark");
790 tty->print_cr("%s", message.as_string());
791
792 // TestUnresponsiveErrorHandler: We want to test both step timeouts and global timeout.
793 // Step to global timeout ratio is 4:1, so in order to be absolutely sure we hit the
794 // global timeout, let's execute the timeout step five times.
795 // See corresponding test in test/runtime/ErrorHandling/TimeoutInErrorHandlingTest.java
796 STEP_IF("setup for test unresponsive error reporting step",
797 _verbose && TestUnresponsiveErrorHandler)
798 // We record reporting_start_time for this test here because we
799 // care about the time spent executing TIMEOUT_TEST_STEP and not
800 // about the time it took us to get here.
801 tty->print_cr("Recording reporting_start_time for TestUnresponsiveErrorHandler.");
802 record_reporting_start_time();
803
804 #define TIMEOUT_TEST_STEP STEP_IF("test unresponsive error reporting step", \
805 _verbose && TestUnresponsiveErrorHandler) \
806 os::infinite_sleep();
807 TIMEOUT_TEST_STEP
808 TIMEOUT_TEST_STEP
809 TIMEOUT_TEST_STEP
810 TIMEOUT_TEST_STEP
811 TIMEOUT_TEST_STEP
812
813 STEP_IF("test safefetch in error handler", _verbose && TestSafeFetchInErrorHandler)
814 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice
815 // to test that resetting the signal handler works correctly.
816 st->print_cr("Will test SafeFetch...");
817 int* const invalid_pointer = (int*)segfault_address;
818 const int x = 0x76543210;
819 int i1 = SafeFetch32(invalid_pointer, x);
820 int i2 = SafeFetch32(invalid_pointer, x);
821 if (i1 == x && i2 == x) {
822 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern
823 } else {
824 st->print_cr("??");
825 }
826 #endif // ASSERT
827
828 STEP("printing type of error")
829 switch(static_cast<unsigned int>(_id)) {
830 case OOM_MALLOC_ERROR:
831 case OOM_MMAP_ERROR:
832 case OOM_MPROTECT_ERROR:
833 if (_size) {
834 st->print("# Native memory allocation ");
835 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
836 (_id == (int)OOM_MMAP_ERROR) ? "(mmap) failed to map " :
837 "(mprotect) failed to protect ");
838 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
839 st->print("%s", buf);
840 st->print(" bytes.");
841 if (strlen(_detail_msg) > 0) {
842 st->print(" Error detail: ");
843 st->print("%s", _detail_msg);
844 }
845 st->cr();
846 } else {
847 if (strlen(_detail_msg) > 0) {
848 st->print("# ");
849 st->print_cr("%s", _detail_msg);
850 }
851 }
852 // In error file give some solutions
853 if (_verbose) {
854 print_oom_reasons(st);
855 } else {
856 return; // that's enough for the screen
857 }
858 break;
859 case INTERNAL_ERROR:
860 default:
861 break;
862 }
863
864 STEP("printing exception/signal name")
865 st->print_cr("#");
866 st->print("# ");
867 // Is it an OS exception/signal?
868 if (os::exception_name(_id, buf, sizeof(buf))) {
869 st->print("%s", buf);
870 st->print(" (0x%x)", _id); // signal number
871 st->print(" at pc=" PTR_FORMAT, p2i(_pc));
872 if (_siginfo != nullptr && os::signal_sent_by_kill(_siginfo)) {
873 st->print(" (sent by kill)");
874 }
875 } else {
876 if (should_report_bug(_id)) {
877 st->print("Internal Error");
878 } else {
879 st->print("Out of Memory Error");
880 }
881 if (_filename != nullptr && _lineno > 0) {
882 #ifdef PRODUCT
883 // In product mode chop off pathname
884 const char *file = get_filename_only();
885 #else
886 const char *file = _filename;
887 #endif
888 st->print(" (%s:%d)", file, _lineno);
889 } else {
890 st->print(" (0x%x)", _id);
891 }
892 }
893
894 STEP("printing current thread and pid")
895 // process id, thread id
896 st->print(", pid=%d", os::current_process_id());
897 st->print(", tid=" UINTX_FORMAT, os::current_thread_id());
898 st->cr();
899
900 STEP_IF("printing error message", should_report_bug(_id)) // already printed the message.
901 // error message
902 if (strlen(_detail_msg) > 0) {
903 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg);
904 } else if (_message) {
905 st->print_cr("# Error: %s", _message);
906 }
907
908 STEP("printing Java version string")
909 report_vm_version(st, buf, sizeof(buf));
910
911 STEP_IF("printing problematic frame", _context != nullptr)
912 // Print current frame if we have a context (i.e. it's a crash)
913 st->print_cr("# Problematic frame:");
914 st->print("# ");
915 frame fr = os::fetch_frame_from_context(_context);
916 fr.print_on_error(st, buf, sizeof(buf));
917 st->cr();
918 st->print_cr("#");
919
920 STEP("printing core file information")
921 st->print("# ");
922 if (CreateCoredumpOnCrash) {
923 if (coredump_status) {
924 st->print("Core dump will be written. Default location: %s", coredump_message);
925 } else {
926 st->print("No core dump will be written. %s", coredump_message);
927 }
928 } else {
929 st->print("CreateCoredumpOnCrash turned off, no core file dumped");
930 }
931 st->cr();
932 st->print_cr("#");
933
934 JFR_ONLY(STEP("printing jfr information"))
935 JFR_ONLY(Jfr::on_vm_error_report(st);)
936
937 STEP_IF("printing bug submit message", should_submit_bug_report(_id) && _verbose)
938 print_bug_submit_message(st, _thread);
939
940 STEP_IF("printing summary", _verbose)
941 st->cr();
942 st->print_cr("--------------- S U M M A R Y ------------");
943 st->cr();
944
945 STEP_IF("printing VM option summary", _verbose)
946 // VM options
947 Arguments::print_summary_on(st);
948 st->cr();
949
950 STEP_IF("printing summary machine and OS info", _verbose)
951 os::print_summary_info(st, buf, sizeof(buf));
952
953 STEP_IF("printing date and time", _verbose)
954 os::print_date_and_time(st, buf, sizeof(buf));
955
956 STEP_IF("printing thread", _verbose)
957 st->cr();
958 st->print_cr("--------------- T H R E A D ---------------");
959 st->cr();
960
961 STEP_IF("printing current thread", _verbose)
962 // current thread
963 if (_thread) {
964 st->print("Current thread (" PTR_FORMAT "): ", p2i(_thread));
965 _thread->print_on_error(st, buf, sizeof(buf));
966 st->cr();
967 } else {
968 st->print_cr("Current thread is native thread");
969 }
970 st->cr();
971
972 STEP_IF("printing current compile task",
973 _verbose && _thread != nullptr && _thread->is_Compiler_thread())
974 CompilerThread* t = (CompilerThread*)_thread;
975 if (t->task()) {
976 st->cr();
977 st->print_cr("Current CompileTask:");
978 t->task()->print_line_on_error(st, buf, sizeof(buf));
979 st->cr();
980 }
981
982 STEP_IF("printing stack bounds", _verbose)
983 st->print("Stack: ");
984
985 address stack_top;
986 size_t stack_size;
987
988 if (_thread) {
989 stack_top = _thread->stack_base();
990 stack_size = _thread->stack_size();
991 } else {
992 os::current_stack_base_and_size(&stack_top, &stack_size);
993 }
994
995 address stack_bottom = stack_top - stack_size;
996 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", p2i(stack_bottom), p2i(stack_top));
997
998 frame fr = _context ? os::fetch_frame_from_context(_context)
999 : os::current_frame();
1000
1001 if (fr.sp()) {
1002 st->print(", sp=" PTR_FORMAT, p2i(fr.sp()));
1003 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
1004 st->print(", free space=" SIZE_FORMAT "k", free_stack_size);
1005 }
1006
1007 st->cr();
1008
1009 STEP_IF("printing native stack (with source info)", _verbose)
1010 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf), lastpc)) {
1011 // We have printed the native stack in platform-specific code
1012 // Windows/x64 needs special handling.
1013 // Stack walking may get stuck. Try to find the calling code.
1014 if (lastpc != nullptr) {
1015 const char* name = find_code_name(lastpc);
1016 if (name != nullptr) {
1017 st->print_cr("The last pc belongs to %s (printed below).", name);
1018 }
1019 }
1020 } else {
1021 frame fr = _context ? os::fetch_frame_from_context(_context)
1022 : os::current_frame();
1023
1024 print_native_stack(st, fr, _thread, true, -1, buf, sizeof(buf));
1025 _print_native_stack_used = true;
1026 }
1027
1028 REATTEMPT_STEP_IF("retry printing native stack (no source info)", _verbose)
1029 st->cr();
1030 st->print_cr("Retrying call stack printing without source information...");
1031 frame fr = _context ? os::fetch_frame_from_context(_context) : os::current_frame();
1032 print_native_stack(st, fr, _thread, false, -1, buf, sizeof(buf));
1033 _print_native_stack_used = true;
1034
1035 STEP_IF("printing Java stack", _verbose && _thread && _thread->is_Java_thread())
1036 if (_verbose && _thread && _thread->is_Java_thread()) {
1037 print_stack_trace(st, JavaThread::cast(_thread), buf, sizeof(buf));
1038 }
1039
1040 STEP_IF("printing target Java thread stack",
1041 _verbose && _thread != nullptr && (_thread->is_Named_thread()))
1042 // printing Java thread stack trace if it is involved in GC crash
1043 Thread* thread = ((NamedThread *)_thread)->processed_thread();
1044 if (thread != nullptr && thread->is_Java_thread()) {
1045 JavaThread* jt = JavaThread::cast(thread);
1046 st->print_cr("JavaThread " PTR_FORMAT " (nid = %d) was being processed", p2i(jt), jt->osthread()->thread_id());
1047 print_stack_trace(st, jt, buf, sizeof(buf), true);
1048 }
1049
1050 STEP_IF("printing siginfo", _verbose && _siginfo != nullptr)
1051 // signal no, signal code, address that caused the fault
1052 st->cr();
1053 os::print_siginfo(st, _siginfo);
1054 st->cr();
1055
1056 STEP_IF("CDS archive access warning", _verbose && _siginfo != nullptr)
1057 // Print an explicit hint if we crashed on access to the CDS archive.
1058 check_failing_cds_access(st, _siginfo);
1059 st->cr();
1060
1061 #if defined(COMPILER1) || defined(COMPILER2)
1062 STEP_IF("printing pending compilation failure",
1063 _verbose && _thread != nullptr && _thread->is_Compiler_thread())
1064 CompilationFailureInfo::print_pending_compilation_failure(st);
1065 #endif
1066
1067 STEP_IF("printing registers", _verbose && _context != nullptr)
1068 // printing registers
1069 os::print_context(st, _context);
1070 st->cr();
1071
1072 STEP_IF("printing register info",
1073 _verbose && _context != nullptr && _thread != nullptr && Universe::is_fully_initialized())
1074 continuation = 0;
1075 ResourceMark rm(_thread);
1076 st->print_cr("Register to memory mapping:");
1077 st->cr();
1078 os::print_register_info(st, _context, continuation);
1079 st->cr();
1080
1081 REATTEMPT_STEP_IF("printing register info, attempt 2",
1082 _verbose && _context != nullptr && _thread != nullptr && Universe::is_fully_initialized())
1083 ResourceMark rm(_thread);
1084 os::print_register_info(st, _context, continuation);
1085 st->cr();
1086
1087 REATTEMPT_STEP_IF("printing register info, attempt 3",
1088 _verbose && _context != nullptr && _thread != nullptr && Universe::is_fully_initialized())
1089 ResourceMark rm(_thread);
1090 os::print_register_info(st, _context, continuation);
1091 st->cr();
1092
1093 STEP_IF("printing top of stack, instructions near pc", _verbose && _context != nullptr)
1094 // printing top of stack, instructions near pc
1095 os::print_tos_pc(st, _context);
1096 st->cr();
1097
1098 STEP_IF("inspecting top of stack",
1099 _verbose && _context != nullptr && _thread != nullptr && Universe::is_fully_initialized())
1100 continuation = 0;
1101 ResourceMark rm(_thread);
1102 st->print_cr("Stack slot to memory mapping:");
1103 st->cr();
1104 print_stack_location(st, _context, continuation);
1105 st->cr();
1106
1107 REATTEMPT_STEP_IF("inspecting top of stack, attempt 2",
1108 _verbose && _context != nullptr && _thread != nullptr && Universe::is_fully_initialized())
1109 ResourceMark rm(_thread);
1110 print_stack_location(st, _context, continuation);
1111 st->cr();
1112
1113 REATTEMPT_STEP_IF("inspecting top of stack, attempt 3",
1114 _verbose && _context != nullptr && _thread != nullptr && Universe::is_fully_initialized())
1115 ResourceMark rm(_thread);
1116 print_stack_location(st, _context, continuation);
1117 st->cr();
1118
1119 STEP_IF("printing lock stack", _verbose && _thread != nullptr && _thread->is_Java_thread() && LockingMode == LM_LIGHTWEIGHT);
1120 st->print_cr("Lock stack of current Java thread (top to bottom):");
1121 JavaThread::cast(_thread)->lock_stack().print_on(st);
1122 st->cr();
1123
1124 STEP_IF("printing code blobs if possible", _verbose)
1125 const int printed_capacity = max_error_log_print_code;
1126 address printed[printed_capacity];
1127 printed[0] = nullptr;
1128 int printed_len = 0;
1129 // Even though ErrorLogPrintCodeLimit is ranged checked
1130 // during argument parsing, there's no way to prevent it
1131 // subsequently (i.e., after parsing) being set to a
1132 // value outside the range.
1133 int limit = MIN2(ErrorLogPrintCodeLimit, printed_capacity);
1134 if (limit > 0) {
1135 // Check if a pc was found by native stack trace above.
1136 if (lastpc != nullptr) {
1137 if (print_code(st, _thread, lastpc, true, printed, printed_capacity)) {
1138 printed_len++;
1139 }
1140 }
1141
1142 // Scan the native stack
1143 if (!_print_native_stack_used) {
1144 // Only try to print code of the crashing frame since
1145 // the native stack cannot be walked with next_frame.
1146 if (print_code(st, _thread, _pc, true, printed, printed_capacity)) {
1147 printed_len++;
1148 }
1149 } else {
1150 frame fr = _context ? os::fetch_frame_from_context(_context)
1151 : os::current_frame();
1152 while (printed_len < limit && fr.pc() != nullptr) {
1153 if (print_code(st, _thread, fr.pc(), fr.pc() == _pc, printed, printed_capacity)) {
1154 printed_len++;
1155 }
1156 fr = next_frame(fr, _thread);
1157 }
1158 }
1159
1160 // Scan the Java stack
1161 if (_thread != nullptr && _thread->is_Java_thread()) {
1162 JavaThread* jt = JavaThread::cast(_thread);
1163 if (jt->has_last_Java_frame()) {
1164 for (StackFrameStream sfs(jt, true /* update */, true /* process_frames */); printed_len < limit && !sfs.is_done(); sfs.next()) {
1165 address pc = sfs.current()->pc();
1166 if (print_code(st, _thread, pc, pc == _pc, printed, printed_capacity)) {
1167 printed_len++;
1168 }
1169 }
1170 }
1171 }
1172 }
1173
1174 STEP_IF("printing VM operation", _verbose && _thread != nullptr && _thread->is_VM_thread())
1175 VMThread* t = (VMThread*)_thread;
1176 VM_Operation* op = t->vm_operation();
1177 if (op) {
1178 op->print_on_error(st);
1179 st->cr();
1180 st->cr();
1181 }
1182
1183 STEP_IF("printing registered callbacks", _verbose && _thread != nullptr);
1184 for (VMErrorCallback* callback = _thread->_vm_error_callbacks;
1185 callback != nullptr;
1186 callback = callback->_next) {
1187 callback->call(st);
1188 st->cr();
1189 }
1190
1191 STEP_IF("printing process", _verbose)
1192 st->cr();
1193 st->print_cr("--------------- P R O C E S S ---------------");
1194 st->cr();
1195
1196 STEP_IF("printing user info", ExtensiveErrorReports && _verbose)
1197 os::print_user_info(st);
1198
1199 STEP_IF("printing all threads", _verbose && _thread != nullptr)
1200 // all threads
1201 Threads::print_on_error(st, _thread, buf, sizeof(buf));
1202 st->cr();
1203
1204 STEP_IF("printing VM state", _verbose)
1205 // Safepoint state
1206 st->print("VM state: ");
1207
1208 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
1209 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
1210 else st->print("not at safepoint");
1211
1212 // Also see if error occurred during initialization or shutdown
1213 if (!Universe::is_fully_initialized()) {
1214 st->print(" (not fully initialized)");
1215 } else if (VM_Exit::vm_exited()) {
1216 st->print(" (shutting down)");
1217 } else {
1218 st->print(" (normal execution)");
1219 }
1220 st->cr();
1221 st->cr();
1222
1223 STEP_IF("printing owned locks on error", _verbose)
1224 // mutexes/monitors that currently have an owner
1225 print_owned_locks_on_error(st);
1226 st->cr();
1227
1228 STEP_IF("printing number of OutOfMemoryError and StackOverflow exceptions",
1229 _verbose && Exceptions::has_exception_counts())
1230 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
1231 Exceptions::print_exception_counts_on_error(st);
1232 st->cr();
1233
1234 #ifdef _LP64
1235 STEP_IF("printing compressed oops mode", _verbose && UseCompressedOops)
1236 CompressedOops::print_mode(st);
1237 st->cr();
1238
1239 STEP_IF("printing compressed klass pointers mode", _verbose && UseCompressedClassPointers)
1240 CDS_ONLY(MetaspaceShared::print_on(st);)
1241 Metaspace::print_compressed_class_space(st);
1242 CompressedKlassPointers::print_mode(st);
1243 st->cr();
1244 #endif
1245
1246 STEP_IF("printing heap information", _verbose)
1247 GCLogPrecious::print_on_error(st);
1248
1249 if (Universe::heap() != nullptr) {
1250 Universe::heap()->print_on_error(st);
1251 st->cr();
1252 }
1253
1254 if (Universe::is_fully_initialized()) {
1255 st->print_cr("Polling page: " PTR_FORMAT, p2i(SafepointMechanism::get_polling_page()));
1256 st->cr();
1257 }
1258
1259 STEP_IF("printing metaspace information", _verbose && Universe::is_fully_initialized())
1260 st->print_cr("Metaspace:");
1261 MetaspaceUtils::print_basic_report(st, 0);
1262
1263 STEP_IF("printing code cache information", _verbose && Universe::is_fully_initialized())
1264 // print code cache information before vm abort
1265 CodeCache::print_summary(st);
1266 st->cr();
1267
1268 STEP_IF("printing ring buffers", _verbose)
1269 Events::print_all(st);
1270 st->cr();
1271
1272 STEP_IF("printing dynamic libraries", _verbose)
1273 // dynamic libraries, or memory map
1274 os::print_dll_info(st);
1275 st->cr();
1276
1277 STEP_IF("printing native decoder state", _verbose)
1278 Decoder::print_state_on(st);
1279 st->cr();
1280
1281 STEP_IF("printing VM options", _verbose)
1282 // VM options
1283 Arguments::print_on(st);
1284 st->cr();
1285
1286 STEP_IF("printing flags", _verbose)
1287 JVMFlag::printFlags(
1288 st,
1289 true, // with comments
1290 false, // no ranges
1291 true); // skip defaults
1292 st->cr();
1293
1294 STEP_IF("printing warning if internal testing API used", WhiteBox::used())
1295 st->print_cr("Unsupported internal testing APIs have been used.");
1296 st->cr();
1297
1298 STEP_IF("printing log configuration", _verbose)
1299 st->print_cr("Logging:");
1300 LogConfiguration::describe_current_configuration(st);
1301 st->cr();
1302
1303 STEP_IF("printing all environment variables", _verbose)
1304 os::print_environment_variables(st, env_list);
1305 st->cr();
1306
1307 STEP_IF("printing locale settings", _verbose)
1308 os::print_active_locale(st);
1309 st->cr();
1310
1311 STEP_IF("printing signal handlers", _verbose)
1312 os::print_signal_handlers(st, buf, sizeof(buf));
1313 st->cr();
1314
1315 STEP_IF("Native Memory Tracking", _verbose)
1316 MemTracker::error_report(st);
1317 st->cr();
1318
1319 STEP_IF("printing periodic trim state", _verbose)
1320 NativeHeapTrimmer::print_state(st);
1321 st->cr();
1322
1323 STEP_IF("printing system", _verbose)
1324 st->print_cr("--------------- S Y S T E M ---------------");
1325 st->cr();
1326
1327 STEP_IF("printing OS information", _verbose)
1328 os::print_os_info(st);
1329 st->cr();
1330
1331 STEP_IF("printing CPU info", _verbose)
1332 os::print_cpu_info(st, buf, sizeof(buf));
1333 st->cr();
1334
1335 STEP_IF("printing memory info", _verbose)
1336 os::print_memory_info(st);
1337 st->cr();
1338
1339 STEP_IF("printing internal vm info", _verbose)
1340 st->print_cr("vm_info: %s", VM_Version::internal_vm_info_string());
1341 st->cr();
1342
1343 // print a defined marker to show that error handling finished correctly.
1344 STEP_IF("printing end marker", _verbose)
1345 st->print_cr("END.");
1346
1347 END
1348
1349 # undef BEGIN
1350 # undef STEP_IF
1351 # undef STEP
1352 # undef REATTEMPT_STEP_IF
1353 # undef END
1354 }
1355
1356 // Report for the vm_info_cmd. This prints out the information above omitting
1357 // crash and thread specific information. If output is added above, it should be added
1358 // here also, if it is safe to call during a running process.
1359 void VMError::print_vm_info(outputStream* st) {
1360
1361 char buf[O_BUFLEN];
1362 os::prepare_native_symbols();
1363
1364 report_vm_version(st, buf, sizeof(buf));
1365
1366 // STEP("printing summary")
1367
1368 st->cr();
1369 st->print_cr("--------------- S U M M A R Y ------------");
1370 st->cr();
1371
1372 // STEP("printing VM option summary")
1373
1374 // VM options
1375 Arguments::print_summary_on(st);
1376 st->cr();
1377
1378 // STEP("printing summary machine and OS info")
1379
1380 os::print_summary_info(st, buf, sizeof(buf));
1381
1382 // STEP("printing date and time")
1383
1384 os::print_date_and_time(st, buf, sizeof(buf));
1385
1386 // Skip: STEP("printing thread")
1387
1388 // STEP("printing process")
1389
1390 st->cr();
1391 st->print_cr("--------------- P R O C E S S ---------------");
1392 st->cr();
1393
1394 // STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
1395
1396 if (Exceptions::has_exception_counts()) {
1397 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
1398 Exceptions::print_exception_counts_on_error(st);
1399 st->cr();
1400 }
1401
1402 #ifdef _LP64
1403 // STEP("printing compressed oops mode")
1404 if (UseCompressedOops) {
1405 CompressedOops::print_mode(st);
1406 st->cr();
1407 }
1408
1409 // STEP("printing compressed class ptrs mode")
1410 if (UseCompressedClassPointers) {
1411 CDS_ONLY(MetaspaceShared::print_on(st);)
1412 Metaspace::print_compressed_class_space(st);
1413 CompressedKlassPointers::print_mode(st);
1414 st->cr();
1415 }
1416 #endif
1417
1418 // STEP("printing heap information")
1419
1420 if (Universe::is_fully_initialized()) {
1421 MutexLocker hl(Heap_lock);
1422 GCLogPrecious::print_on_error(st);
1423 Universe::heap()->print_on_error(st);
1424 st->cr();
1425 st->print_cr("Polling page: " PTR_FORMAT, p2i(SafepointMechanism::get_polling_page()));
1426 st->cr();
1427 }
1428
1429 // STEP("printing metaspace information")
1430
1431 if (Universe::is_fully_initialized()) {
1432 st->print_cr("Metaspace:");
1433 MetaspaceUtils::print_basic_report(st, 0);
1434 }
1435
1436 // STEP("printing code cache information")
1437
1438 if (Universe::is_fully_initialized()) {
1439 // print code cache information before vm abort
1440 CodeCache::print_summary(st);
1441 st->cr();
1442 }
1443
1444 // STEP("printing ring buffers")
1445
1446 Events::print_all(st);
1447 st->cr();
1448
1449 // STEP("printing dynamic libraries")
1450
1451 // dynamic libraries, or memory map
1452 os::print_dll_info(st);
1453 st->cr();
1454
1455 // STEP("printing VM options")
1456
1457 // VM options
1458 Arguments::print_on(st);
1459 st->cr();
1460
1461 // STEP("printing warning if internal testing API used")
1462
1463 if (WhiteBox::used()) {
1464 st->print_cr("Unsupported internal testing APIs have been used.");
1465 st->cr();
1466 }
1467
1468 // STEP("printing log configuration")
1469 st->print_cr("Logging:");
1470 LogConfiguration::describe(st);
1471 st->cr();
1472
1473 // STEP("printing all environment variables")
1474
1475 os::print_environment_variables(st, env_list);
1476 st->cr();
1477
1478 // STEP("printing locale settings")
1479
1480 os::print_active_locale(st);
1481 st->cr();
1482
1483
1484 // STEP("printing signal handlers")
1485
1486 os::print_signal_handlers(st, buf, sizeof(buf));
1487 st->cr();
1488
1489 // STEP("Native Memory Tracking")
1490
1491 MemTracker::error_report(st);
1492 st->cr();
1493
1494 // STEP("printing periodic trim state")
1495 NativeHeapTrimmer::print_state(st);
1496 st->cr();
1497
1498
1499 // STEP("printing system")
1500 st->print_cr("--------------- S Y S T E M ---------------");
1501 st->cr();
1502
1503 // STEP("printing OS information")
1504
1505 os::print_os_info(st);
1506 st->cr();
1507
1508 // STEP("printing CPU info")
1509
1510 os::print_cpu_info(st, buf, sizeof(buf));
1511 st->cr();
1512
1513 // STEP("printing memory info")
1514
1515 os::print_memory_info(st);
1516 st->cr();
1517
1518 // STEP("printing internal vm info")
1519
1520 st->print_cr("vm_info: %s", VM_Version::internal_vm_info_string());
1521 st->cr();
1522
1523 // print a defined marker to show that error handling finished correctly.
1524 // STEP("printing end marker")
1525
1526 st->print_cr("END.");
1527 }
1528
1529 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
1530 static int expand_and_open(const char* pattern, bool overwrite_existing, char* buf, size_t buflen, size_t pos) {
1531 int fd = -1;
1532 int mode = O_RDWR | O_CREAT;
1533 if (overwrite_existing) {
1534 mode |= O_TRUNC;
1535 } else {
1536 mode |= O_EXCL;
1537 }
1538 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
1539 fd = open(buf, mode, 0666);
1540 }
1541 return fd;
1542 }
1543
1544 /**
1545 * Construct file name for a log file and return it's file descriptor.
1546 * Name and location depends on pattern, default_pattern params and access
1547 * permissions.
1548 */
1549 int VMError::prepare_log_file(const char* pattern, const char* default_pattern, bool overwrite_existing, char* buf, size_t buflen) {
1550 int fd = -1;
1551
1552 // If possible, use specified pattern to construct log file name
1553 if (pattern != nullptr) {
1554 fd = expand_and_open(pattern, overwrite_existing, buf, buflen, 0);
1555 }
1556
1557 // Either user didn't specify, or the user's location failed,
1558 // so use the default name in the current directory
1559 if (fd == -1) {
1560 const char* cwd = os::get_current_directory(buf, buflen);
1561 if (cwd != nullptr) {
1562 size_t pos = strlen(cwd);
1563 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
1564 pos += fsep_len;
1565 if (fsep_len > 0) {
1566 fd = expand_and_open(default_pattern, overwrite_existing, buf, buflen, pos);
1567 }
1568 }
1569 }
1570
1571 // try temp directory if it exists.
1572 if (fd == -1) {
1573 const char* tmpdir = os::get_temp_directory();
1574 if (tmpdir != nullptr && strlen(tmpdir) > 0) {
1575 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
1576 if (pos > 0) {
1577 fd = expand_and_open(default_pattern, overwrite_existing, buf, buflen, pos);
1578 }
1579 }
1580 }
1581
1582 return fd;
1583 }
1584
1585 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo,
1586 void* context, const char* detail_fmt, ...)
1587 {
1588 va_list detail_args;
1589 va_start(detail_args, detail_fmt);
1590 report_and_die(sig, nullptr, detail_fmt, detail_args, thread, pc, siginfo, context, nullptr, 0, 0);
1591 va_end(detail_args);
1592 }
1593
1594 void VMError::report_and_die(Thread* thread, void* context, const char* filename, int lineno, const char* message,
1595 const char* detail_fmt, ...) {
1596 va_list detail_args;
1597 va_start(detail_args, detail_fmt);
1598 report_and_die(thread, context, filename, lineno, message, detail_fmt, detail_args);
1599 va_end(detail_args);
1600 }
1601
1602 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context)
1603 {
1604 report_and_die(thread, sig, pc, siginfo, context, "%s", "");
1605 }
1606
1607 void VMError::report_and_die(Thread* thread, void* context, const char* filename, int lineno, const char* message,
1608 const char* detail_fmt, va_list detail_args)
1609 {
1610 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, thread, nullptr, nullptr, context, filename, lineno, 0);
1611 }
1612
1613 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, size_t size,
1614 VMErrorType vm_err_type, const char* detail_fmt, va_list detail_args) {
1615 report_and_die(vm_err_type, nullptr, detail_fmt, detail_args, thread, nullptr, nullptr, nullptr, filename, lineno, size);
1616 }
1617
1618 void VMError::report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args,
1619 Thread* thread, address pc, void* siginfo, void* context, const char* filename,
1620 int lineno, size_t size)
1621 {
1622 // A single scratch buffer to be used from here on.
1623 // Do not rely on it being preserved across function calls.
1624 static char buffer[O_BUFLEN];
1625
1626 // File descriptor to tty to print an error summary to.
1627 // Hard wired to stdout; see JDK-8215004 (compatibility concerns).
1628 static const int fd_out = 1; // stdout
1629
1630 // File descriptor to the error log file.
1631 static int fd_log = -1;
1632
1633 #ifdef CAN_SHOW_REGISTERS_ON_ASSERT
1634 // Disarm assertion poison page, since from this point on we do not need this mechanism anymore and it may
1635 // cause problems in error handling during native OOM, see JDK-8227275.
1636 disarm_assert_poison();
1637 #endif
1638
1639 // Use local fdStream objects only. Do not use global instances whose initialization
1640 // relies on dynamic initialization (see JDK-8214975). Do not rely on these instances
1641 // to carry over into recursions or invocations from other threads.
1642 fdStream out(fd_out);
1643 out.set_scratch_buffer(buffer, sizeof(buffer));
1644
1645 // Depending on the re-entrance depth at this point, fd_log may be -1 or point to an open hs-err file.
1646 fdStream log(fd_log);
1647 log.set_scratch_buffer(buffer, sizeof(buffer));
1648
1649 // How many errors occurred in error handler when reporting first_error.
1650 static int recursive_error_count;
1651
1652 // We will first print a brief message to standard out (verbose = false),
1653 // then save detailed information in log file (verbose = true).
1654 static bool out_done = false; // done printing to standard out
1655 static bool log_done = false; // done saving error log
1656
1657 intptr_t mytid = os::current_thread_id();
1658 if (_first_error_tid == -1 &&
1659 Atomic::cmpxchg(&_first_error_tid, (intptr_t)-1, mytid) == -1) {
1660
1661 if (SuppressFatalErrorMessage) {
1662 os::abort(CreateCoredumpOnCrash);
1663 }
1664
1665 // Initialize time stamps to use the same base.
1666 out.time_stamp().update_to(1);
1667 log.time_stamp().update_to(1);
1668
1669 _id = id;
1670 _message = message;
1671 _thread = thread;
1672 _pc = pc;
1673 _siginfo = siginfo;
1674 _context = context;
1675 _filename = filename;
1676 _lineno = lineno;
1677 _size = size;
1678 jio_vsnprintf(_detail_msg, sizeof(_detail_msg), detail_fmt, detail_args);
1679
1680 reporting_started();
1681 if (!TestUnresponsiveErrorHandler) {
1682 // Record reporting_start_time unless we're running the
1683 // TestUnresponsiveErrorHandler test. For that test we record
1684 // reporting_start_time at the beginning of the test.
1685 record_reporting_start_time();
1686 } else {
1687 out.print_raw_cr("Delaying recording reporting_start_time for TestUnresponsiveErrorHandler.");
1688 }
1689
1690 if (ShowMessageBoxOnError || PauseAtExit) {
1691 show_message_box(buffer, sizeof(buffer));
1692
1693 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
1694 // WatcherThread can kill JVM if the error handler hangs.
1695 ShowMessageBoxOnError = false;
1696 }
1697
1698 os::check_dump_limit(buffer, sizeof(buffer));
1699
1700 // reset signal handlers or exception filter; make sure recursive crashes
1701 // are handled properly.
1702 install_secondary_signal_handler();
1703 } else {
1704 // This is not the first error, see if it happened in a different thread
1705 // or in the same thread during error reporting.
1706 if (_first_error_tid != mytid) {
1707 if (!SuppressFatalErrorMessage) {
1708 char msgbuf[64];
1709 jio_snprintf(msgbuf, sizeof(msgbuf),
1710 "[thread " INTX_FORMAT " also had an error]",
1711 mytid);
1712 out.print_raw_cr(msgbuf);
1713 }
1714
1715 // Error reporting is not MT-safe, nor can we let the current thread
1716 // proceed, so we block it.
1717 os::infinite_sleep();
1718
1719 } else {
1720 if (recursive_error_count++ > 30) {
1721 if (!SuppressFatalErrorMessage) {
1722 out.print_raw_cr("[Too many errors, abort]");
1723 }
1724 os::die();
1725 }
1726
1727 if (SuppressFatalErrorMessage) {
1728 // If we already hit a secondary error during abort, then calling
1729 // it again is likely to hit another one. But eventually, if we
1730 // don't deadlock somewhere, we will call os::die() above.
1731 os::abort(CreateCoredumpOnCrash);
1732 }
1733
1734 outputStream* const st = log.is_open() ? &log : &out;
1735 st->cr();
1736
1737 // Timeout handling.
1738 if (_step_did_timeout) {
1739 // The current step had a timeout. Lets continue reporting with the next step.
1740 st->print_raw("[timeout occurred during error reporting in step \"");
1741 st->print_raw(_current_step_info);
1742 st->print_cr("\"] after " INT64_FORMAT " s.",
1743 (int64_t)
1744 ((get_current_timestamp() - _step_start_time) / TIMESTAMP_TO_SECONDS_FACTOR));
1745 } else if (_reporting_did_timeout) {
1746 // We hit ErrorLogTimeout. Reporting will stop altogether. Let's wrap things
1747 // up, the process is about to be stopped by the WatcherThread.
1748 st->print_cr("------ Timeout during error reporting after " INT64_FORMAT " s. ------",
1749 (int64_t)
1750 ((get_current_timestamp() - _reporting_start_time) / TIMESTAMP_TO_SECONDS_FACTOR));
1751 st->flush();
1752 // Watcherthread is about to call os::die. Lets just wait.
1753 os::infinite_sleep();
1754 } else {
1755 // A secondary error happened. Print brief information, but take care, since crashing
1756 // here would just recurse endlessly.
1757 // Any information (signal, context, siginfo etc) printed here should use the function
1758 // arguments, not the information stored in *this, since those describe the primary crash.
1759 static char tmp[256]; // cannot use global scratch buffer
1760 // Note: this string does get parsed by a number of jtreg tests,
1761 // see hotspot/jtreg/runtime/ErrorHandling.
1762 st->print("[error occurred during error reporting (%s), id 0x%x",
1763 _current_step_info, id);
1764 if (os::exception_name(id, tmp, sizeof(tmp))) {
1765 st->print(", %s (0x%x) at pc=" PTR_FORMAT, tmp, id, p2i(pc));
1766 } else {
1767 if (should_report_bug(id)) {
1768 st->print(", Internal Error (%s:%d)",
1769 filename == nullptr ? "??" : filename, lineno);
1770 } else {
1771 st->print(", Out of Memory Error (%s:%d)",
1772 filename == nullptr ? "??" : filename, lineno);
1773 }
1774 }
1775 st->print_cr("]");
1776 if (ErrorLogSecondaryErrorDetails) {
1777 static bool recursed = false;
1778 if (!recursed) {
1779 recursed = true;
1780 // Print even more information for secondary errors. This may generate a lot of output
1781 // and possibly disturb error reporting, therefore its optional and only available in debug builds.
1782 if (siginfo != nullptr) {
1783 st->print("[");
1784 os::print_siginfo(st, siginfo);
1785 st->print_cr("]");
1786 }
1787 st->print("[stack: ");
1788 frame fr = context ? os::fetch_frame_from_context(context) : os::current_frame();
1789 // Subsequent secondary errors build up stack; to avoid flooding the hs-err file with irrelevant
1790 // call stacks, limit the stack we print here (we are only interested in what happened before the
1791 // last assert/fault).
1792 const int max_stack_size = 15;
1793 print_native_stack(st, fr, _thread, true, max_stack_size, tmp, sizeof(tmp));
1794 st->print_cr("]");
1795 } // !recursed
1796 recursed = false; // Note: reset outside !recursed
1797 }
1798 }
1799 }
1800 }
1801
1802 // Part 1: print an abbreviated version (the '#' section) to stdout.
1803 if (!out_done) {
1804 // Suppress this output if we plan to print Part 2 to stdout too.
1805 // No need to have the "#" section twice.
1806 if (!(ErrorFileToStdout && out.fd() == 1)) {
1807 report(&out, false);
1808 }
1809
1810 out_done = true;
1811
1812 _current_step = 0;
1813 _current_step_info = "";
1814 }
1815
1816 // Part 2: print a full error log file (optionally to stdout or stderr).
1817 // print to error log file
1818 if (!log_done) {
1819 // see if log file is already open
1820 if (!log.is_open()) {
1821 // open log file
1822 if (ErrorFileToStdout) {
1823 fd_log = 1;
1824 } else if (ErrorFileToStderr) {
1825 fd_log = 2;
1826 } else {
1827 fd_log = prepare_log_file(ErrorFile, "hs_err_pid%p.log", true,
1828 buffer, sizeof(buffer));
1829 if (fd_log != -1) {
1830 out.print_raw("# An error report file with more information is saved as:\n# ");
1831 out.print_raw_cr(buffer);
1832 } else {
1833 out.print_raw_cr("# Can not save log file, dump to screen..");
1834 fd_log = 1;
1835 }
1836 }
1837 log.set_fd(fd_log);
1838 }
1839
1840 report(&log, true);
1841 log_done = true;
1842 _current_step = 0;
1843 _current_step_info = "";
1844
1845 if (fd_log > 3) {
1846 ::close(fd_log);
1847 fd_log = -1;
1848 }
1849
1850 log.set_fd(-1);
1851 }
1852
1853 JFR_ONLY(Jfr::on_vm_shutdown(true);)
1854
1855 if (PrintNMTStatistics) {
1856 fdStream fds(fd_out);
1857 MemTracker::final_report(&fds);
1858 }
1859
1860 static bool skip_replay = ReplayCompiles && !ReplayReduce; // Do not overwrite file during replay
1861 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1862 skip_replay = true;
1863 ciEnv* env = ciEnv::current();
1864 if (env != nullptr) {
1865 const bool overwrite = false; // We do not overwrite an existing replay file.
1866 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", overwrite, buffer, sizeof(buffer));
1867 if (fd != -1) {
1868 FILE* replay_data_file = os::fdopen(fd, "w");
1869 if (replay_data_file != nullptr) {
1870 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1871 env->dump_replay_data_unsafe(&replay_data_stream);
1872 out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1873 out.print_raw_cr(buffer);
1874 } else {
1875 int e = errno;
1876 out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1877 out.print_raw_cr(os::strerror(e));
1878 close(fd);
1879 }
1880 }
1881 }
1882 }
1883
1884 #if INCLUDE_JVMCI
1885 if (JVMCI::fatal_log_filename() != nullptr) {
1886 out.print_raw("#\n# The JVMCI shared library error report file is saved as:\n# ");
1887 out.print_raw_cr(JVMCI::fatal_log_filename());
1888 }
1889 #endif
1890
1891 static bool skip_bug_url = !should_submit_bug_report(_id);
1892 if (!skip_bug_url) {
1893 skip_bug_url = true;
1894
1895 out.print_raw_cr("#");
1896 print_bug_submit_message(&out, _thread);
1897 }
1898
1899 static bool skip_OnError = false;
1900 if (!skip_OnError && OnError && OnError[0]) {
1901 skip_OnError = true;
1902
1903 // Flush output and finish logs before running OnError commands.
1904 ostream_abort();
1905
1906 out.print_raw_cr("#");
1907 out.print_raw ("# -XX:OnError=\"");
1908 out.print_raw (OnError);
1909 out.print_raw_cr("\"");
1910
1911 char* cmd;
1912 const char* ptr = OnError;
1913 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != nullptr){
1914 out.print_raw ("# Executing ");
1915 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1916 out.print_raw ("/bin/sh -c ");
1917 #elif defined(_WINDOWS)
1918 out.print_raw ("cmd /C ");
1919 #endif
1920 out.print_raw ("\"");
1921 out.print_raw (cmd);
1922 out.print_raw_cr("\" ...");
1923
1924 if (os::fork_and_exec(cmd) < 0) {
1925 out.print_cr("os::fork_and_exec failed: %s (%s=%d)",
1926 os::strerror(errno), os::errno_name(errno), errno);
1927 }
1928 }
1929
1930 // done with OnError
1931 OnError = nullptr;
1932 }
1933
1934 #if defined _WINDOWS
1935 if (UseOSErrorReporting) {
1936 raise_fail_fast(_siginfo, _context);
1937 }
1938 #endif // _WINDOWS
1939
1940 // os::abort() will call abort hooks, try it first.
1941 static bool skip_os_abort = false;
1942 if (!skip_os_abort) {
1943 skip_os_abort = true;
1944 bool dump_core = should_report_bug(_id);
1945 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context);
1946 // if os::abort() doesn't abort, try os::die();
1947 }
1948 os::die();
1949 }
1950
1951 /*
1952 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1953 * ensures utilities such as jmap can observe the process is a consistent state.
1954 */
1955 class VM_ReportJavaOutOfMemory : public VM_Operation {
1956 private:
1957 const char* _message;
1958 public:
1959 VM_ReportJavaOutOfMemory(const char* message) { _message = message; }
1960 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
1961 void doit();
1962 };
1963
1964 void VM_ReportJavaOutOfMemory::doit() {
1965 // Don't allocate large buffer on stack
1966 static char buffer[O_BUFLEN];
1967
1968 tty->print_cr("#");
1969 tty->print_cr("# java.lang.OutOfMemoryError: %s", _message);
1970 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1971
1972 // make heap parsability
1973 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
1974
1975 char* cmd;
1976 const char* ptr = OnOutOfMemoryError;
1977 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != nullptr){
1978 tty->print("# Executing ");
1979 #if defined(LINUX)
1980 tty->print ("/bin/sh -c ");
1981 #endif
1982 tty->print_cr("\"%s\"...", cmd);
1983
1984 if (os::fork_and_exec(cmd) < 0) {
1985 tty->print_cr("os::fork_and_exec failed: %s (%s=%d)",
1986 os::strerror(errno), os::errno_name(errno), errno);
1987 }
1988 }
1989 }
1990
1991 void VMError::report_java_out_of_memory(const char* message) {
1992 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1993 MutexLocker ml(Heap_lock);
1994 VM_ReportJavaOutOfMemory op(message);
1995 VMThread::execute(&op);
1996 }
1997 }
1998
1999 void VMError::show_message_box(char *buf, int buflen) {
2000 bool yes;
2001 do {
2002 error_string(buf, buflen);
2003 yes = os::start_debugging(buf,buflen);
2004 } while (yes);
2005 }
2006
2007 // Fatal error handling is subject to several timeouts:
2008 // - a global timeout (controlled via ErrorLogTimeout)
2009 // - local error reporting step timeouts.
2010 //
2011 // The latter aims to "give the JVM a kick" if it gets stuck in one particular place during
2012 // error reporting. This prevents one error reporting step from hogging all the time allotted
2013 // to error reporting under ErrorLogTimeout.
2014 //
2015 // VMError::check_timeout() is called from the watcher thread and checks for either global
2016 // or step timeout. If a timeout happened, we interrupt the reporting thread and set either
2017 // _reporting_did_timeout or _step_did_timeout to signal which timeout fired. Function returns
2018 // true if the *global* timeout fired, which will cause WatcherThread to shut down the JVM
2019 // immediately.
2020 bool VMError::check_timeout() {
2021
2022 // This function is supposed to be called from watcher thread during fatal error handling only.
2023 assert(VMError::is_error_reported(), "Only call during error handling");
2024 assert(Thread::current()->is_Watcher_thread(), "Only call from watcher thread");
2025
2026 if (ErrorLogTimeout == 0) {
2027 return false;
2028 }
2029
2030 // There are three situations where we suppress the *global* error timeout:
2031 // - if the JVM is embedded and the launcher has its abort hook installed.
2032 // That must be allowed to run.
2033 // - if the user specified one or more OnError commands to run, and these
2034 // did not yet run. These must have finished.
2035 // - if the user (typically developer) specified ShowMessageBoxOnError,
2036 // and the error box has not yet been shown
2037 const bool ignore_global_timeout =
2038 (ShowMessageBoxOnError
2039 || (OnError != nullptr && OnError[0] != '\0')
2040 || Arguments::abort_hook() != nullptr);
2041
2042 const jlong now = get_current_timestamp();
2043
2044 // Global timeout hit?
2045 if (!ignore_global_timeout) {
2046 const jlong reporting_start_time = get_reporting_start_time();
2047 // Timestamp is stored in nanos.
2048 if (reporting_start_time > 0) {
2049 const jlong end = reporting_start_time + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR;
2050 if (end <= now && !_reporting_did_timeout) {
2051 // We hit ErrorLogTimeout and we haven't interrupted the reporting
2052 // thread yet.
2053 _reporting_did_timeout = true;
2054 interrupt_reporting_thread();
2055 return true; // global timeout
2056 }
2057 }
2058 }
2059
2060 // Reporting step timeout?
2061 const jlong step_start_time = get_step_start_time();
2062 if (step_start_time > 0) {
2063 // A step times out after a quarter of the total timeout. Steps are mostly fast unless they
2064 // hang for some reason, so this simple rule allows for three hanging step and still
2065 // hopefully leaves time enough for the rest of the steps to finish.
2066 const int max_step_timeout_secs = 5;
2067 const jlong timeout_duration = MAX2((jlong)max_step_timeout_secs, (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR / 4);
2068 const jlong end = step_start_time + timeout_duration;
2069 if (end <= now && !_step_did_timeout) {
2070 // The step timed out and we haven't interrupted the reporting
2071 // thread yet.
2072 _step_did_timeout = true;
2073 interrupt_reporting_thread();
2074 return false; // (Not a global timeout)
2075 }
2076 }
2077
2078 return false;
2079
2080 }
2081
2082 #ifdef ASSERT
2083 typedef void (*voidfun_t)();
2084
2085 // Crash with an authentic sigfpe
2086 volatile int sigfpe_int = 0;
2087 static void ALWAYSINLINE crash_with_sigfpe() {
2088
2089 // generate a native synchronous SIGFPE where possible;
2090 sigfpe_int = sigfpe_int/sigfpe_int;
2091
2092 // if that did not cause a signal (e.g. on ppc), just
2093 // raise the signal.
2094 #ifndef _WIN32
2095 // OSX implements raise(sig) incorrectly so we need to
2096 // explicitly target the current thread
2097 pthread_kill(pthread_self(), SIGFPE);
2098 #endif
2099
2100 } // end: crash_with_sigfpe
2101
2102 // crash with sigsegv at non-null address.
2103 static void ALWAYSINLINE crash_with_segfault() {
2104
2105 int* crash_addr = reinterpret_cast<int*>(VMError::segfault_address);
2106 *crash_addr = 1;
2107
2108 } // end: crash_with_segfault
2109
2110 // crash in a controlled way:
2111 // 1 - assert
2112 // 2 - guarantee
2113 // 14 - SIGSEGV
2114 // 15 - SIGFPE
2115 void VMError::controlled_crash(int how) {
2116
2117 // Case 14 is tested by test/hotspot/jtreg/runtime/ErrorHandling/SafeFetchInErrorHandlingTest.java.
2118 // Case 15 is tested by test/hotspot/jtreg/runtime/ErrorHandling/SecondaryErrorTest.java.
2119 // Case 16 is tested by test/hotspot/jtreg/runtime/ErrorHandling/ThreadsListHandleInErrorHandlingTest.java.
2120 // Case 17 is tested by test/hotspot/jtreg/runtime/ErrorHandling/NestedThreadsListHandleInErrorHandlingTest.java.
2121
2122 // We try to grab Threads_lock to keep ThreadsSMRSupport::print_info_on()
2123 // from racing with Threads::add() or Threads::remove() as we
2124 // generate the hs_err_pid file. This makes our ErrorHandling tests
2125 // more stable.
2126 if (!Threads_lock->owned_by_self()) {
2127 Threads_lock->try_lock();
2128 // The VM is going to die so no need to unlock Thread_lock.
2129 }
2130
2131 switch (how) {
2132 case 1: assert(how == 0, "test assert"); break;
2133 case 2: guarantee(how == 0, "test guarantee"); break;
2134
2135 // The other cases are unused.
2136 case 14: crash_with_segfault(); break;
2137 case 15: crash_with_sigfpe(); break;
2138 case 16: {
2139 ThreadsListHandle tlh;
2140 fatal("Force crash with an active ThreadsListHandle.");
2141 }
2142 case 17: {
2143 ThreadsListHandle tlh;
2144 {
2145 ThreadsListHandle tlh2;
2146 fatal("Force crash with a nested ThreadsListHandle.");
2147 }
2148 }
2149 default:
2150 // If another number is given, give a generic crash.
2151 fatal("Crashing with number %d", how);
2152 }
2153 tty->print_cr("controlled_crash: survived intentional crash. Did you suppress the assert?");
2154 ShouldNotReachHere();
2155 }
2156 #endif // !ASSERT
2157
2158 VMErrorCallbackMark::VMErrorCallbackMark(VMErrorCallback* callback)
2159 : _thread(Thread::current()) {
2160 callback->_next = _thread->_vm_error_callbacks;
2161 _thread->_vm_error_callbacks = callback;
2162 }
2163
2164 VMErrorCallbackMark::~VMErrorCallbackMark() {
2165 assert(_thread->_vm_error_callbacks != nullptr, "Popped too far");
2166 _thread->_vm_error_callbacks = _thread->_vm_error_callbacks->_next;
2167 }