1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17 package com.android.server.am; 18 19 import com.android.internal.app.ProcessMap; 20 import com.android.internal.logging.MetricsLogger; 21 import com.android.internal.logging.nano.MetricsProto; 22 import com.android.internal.os.ProcessCpuTracker; 23 import com.android.server.RescueParty; 24 import com.android.server.Watchdog; 25 26 import android.app.ActivityManager; 27 import android.app.ActivityOptions; 28 import android.app.ActivityThread; 29 import android.app.AppOpsManager; 30 import android.app.ApplicationErrorReport; 31 import android.app.Dialog; 32 import android.content.ActivityNotFoundException; 33 import android.content.Context; 34 import android.content.Intent; 35 import android.content.pm.ApplicationInfo; 36 import android.os.Binder; 37 import android.os.Message; 38 import android.os.Process; 39 import android.os.RemoteException; 40 import android.os.SystemClock; 41 import android.os.SystemProperties; 42 import android.os.UserHandle; 43 import android.provider.Settings; 44 import android.util.ArrayMap; 45 import android.util.ArraySet; 46 import android.util.EventLog; 47 import android.util.Log; 48 import android.util.Slog; 49 import android.util.SparseArray; 50 import android.util.TimeUtils; 51 52 import java.io.File; 53 import java.io.FileDescriptor; 54 import java.io.PrintWriter; 55 import java.util.ArrayList; 56 import java.util.Collections; 57 import java.util.HashMap; 58 import java.util.Set; 59 60 import static com.android.server.Watchdog.NATIVE_STACKS_OF_INTEREST; 61 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_ANR; 62 import static com.android.server.am.ActivityManagerDebugConfig.TAG_AM; 63 import static com.android.server.am.ActivityManagerDebugConfig.TAG_WITH_CLASS_NAME; 64 import static com.android.server.am.ActivityManagerService.MY_PID; 65 import static com.android.server.am.ActivityManagerService.SYSTEM_DEBUGGABLE; 66 67 /** 68 * Controls error conditions in applications. 69 */ 70 class AppErrors { 71 72 private static final String TAG = TAG_WITH_CLASS_NAME ? "AppErrors" : TAG_AM; 73 74 private final ActivityManagerService mService; 75 private final Context mContext; 76 77 private ArraySet<String> mAppsNotReportingCrashes; 78 79 /** 80 * The last time that various processes have crashed since they were last explicitly started. 81 */ 82 private final ProcessMap<Long> mProcessCrashTimes = new ProcessMap<>(); 83 84 /** 85 * The last time that various processes have crashed (not reset even when explicitly started). 86 */ 87 private final ProcessMap<Long> mProcessCrashTimesPersistent = new ProcessMap<>(); 88 89 /** 90 * Set of applications that we consider to be bad, and will reject 91 * incoming broadcasts from (which the user has no control over). 92 * Processes are added to this set when they have crashed twice within 93 * a minimum amount of time; they are removed from it when they are 94 * later restarted (hopefully due to some user action). The value is the 95 * time it was added to the list. 96 */ 97 private final ProcessMap<BadProcessInfo> mBadProcesses = new ProcessMap<>(); 98 99 100 AppErrors(Context context, ActivityManagerService service) { 101 context.assertRuntimeOverlayThemable(); 102 mService = service; 103 mContext = context; 104 } 105 106 boolean dumpLocked(FileDescriptor fd, PrintWriter pw, boolean needSep, 107 String dumpPackage) { 108 if (!mProcessCrashTimes.getMap().isEmpty()) { 109 boolean printed = false; 110 final long now = SystemClock.uptimeMillis(); 111 final ArrayMap<String, SparseArray<Long>> pmap = mProcessCrashTimes.getMap(); 112 final int processCount = pmap.size(); 113 for (int ip = 0; ip < processCount; ip++) { 114 final String pname = pmap.keyAt(ip); 115 final SparseArray<Long> uids = pmap.valueAt(ip); 116 final int uidCount = uids.size(); 117 for (int i = 0; i < uidCount; i++) { 118 final int puid = uids.keyAt(i); 119 final ProcessRecord r = mService.mProcessNames.get(pname, puid); 120 if (dumpPackage != null && (r == null 121 || !r.pkgList.containsKey(dumpPackage))) { 122 continue; 123 } 124 if (!printed) { 125 if (needSep) pw.println(); 126 needSep = true; 127 pw.println(" Time since processes crashed:"); 128 printed = true; 129 } 130 pw.print(" Process "); pw.print(pname); 131 pw.print(" uid "); pw.print(puid); 132 pw.print(": last crashed "); 133 TimeUtils.formatDuration(now-uids.valueAt(i), pw); 134 pw.println(" ago"); 135 } 136 } 137 } 138 139 if (!mBadProcesses.getMap().isEmpty()) { 140 boolean printed = false; 141 final ArrayMap<String, SparseArray<BadProcessInfo>> pmap = mBadProcesses.getMap(); 142 final int processCount = pmap.size(); 143 for (int ip = 0; ip < processCount; ip++) { 144 final String pname = pmap.keyAt(ip); 145 final SparseArray<BadProcessInfo> uids = pmap.valueAt(ip); 146 final int uidCount = uids.size(); 147 for (int i = 0; i < uidCount; i++) { 148 final int puid = uids.keyAt(i); 149 final ProcessRecord r = mService.mProcessNames.get(pname, puid); 150 if (dumpPackage != null && (r == null 151 || !r.pkgList.containsKey(dumpPackage))) { 152 continue; 153 } 154 if (!printed) { 155 if (needSep) pw.println(); 156 needSep = true; 157 pw.println(" Bad processes:"); 158 printed = true; 159 } 160 final BadProcessInfo info = uids.valueAt(i); 161 pw.print(" Bad process "); pw.print(pname); 162 pw.print(" uid "); pw.print(puid); 163 pw.print(": crashed at time "); pw.println(info.time); 164 if (info.shortMsg != null) { 165 pw.print(" Short msg: "); pw.println(info.shortMsg); 166 } 167 if (info.longMsg != null) { 168 pw.print(" Long msg: "); pw.println(info.longMsg); 169 } 170 if (info.stack != null) { 171 pw.println(" Stack:"); 172 int lastPos = 0; 173 for (int pos = 0; pos < info.stack.length(); pos++) { 174 if (info.stack.charAt(pos) == '\n') { 175 pw.print(" "); 176 pw.write(info.stack, lastPos, pos-lastPos); 177 pw.println(); 178 lastPos = pos+1; 179 } 180 } 181 if (lastPos < info.stack.length()) { 182 pw.print(" "); 183 pw.write(info.stack, lastPos, info.stack.length()-lastPos); 184 pw.println(); 185 } 186 } 187 } 188 } 189 } 190 return needSep; 191 } 192 193 boolean isBadProcessLocked(ApplicationInfo info) { 194 return mBadProcesses.get(info.processName, info.uid) != null; 195 } 196 197 void clearBadProcessLocked(ApplicationInfo info) { 198 mBadProcesses.remove(info.processName, info.uid); 199 } 200 201 void resetProcessCrashTimeLocked(ApplicationInfo info) { 202 mProcessCrashTimes.remove(info.processName, info.uid); 203 } 204 205 void resetProcessCrashTimeLocked(boolean resetEntireUser, int appId, int userId) { 206 final ArrayMap<String, SparseArray<Long>> pmap = mProcessCrashTimes.getMap(); 207 for (int ip = pmap.size() - 1; ip >= 0; ip--) { 208 SparseArray<Long> ba = pmap.valueAt(ip); 209 for (int i = ba.size() - 1; i >= 0; i--) { 210 boolean remove = false; 211 final int entUid = ba.keyAt(i); 212 if (!resetEntireUser) { 213 if (userId == UserHandle.USER_ALL) { 214 if (UserHandle.getAppId(entUid) == appId) { 215 remove = true; 216 } 217 } else { 218 if (entUid == UserHandle.getUid(userId, appId)) { 219 remove = true; 220 } 221 } 222 } else if (UserHandle.getUserId(entUid) == userId) { 223 remove = true; 224 } 225 if (remove) { 226 ba.removeAt(i); 227 } 228 } 229 if (ba.size() == 0) { 230 pmap.removeAt(ip); 231 } 232 } 233 } 234 235 void loadAppsNotReportingCrashesFromConfigLocked(String appsNotReportingCrashesConfig) { 236 if (appsNotReportingCrashesConfig != null) { 237 final String[] split = appsNotReportingCrashesConfig.split(","); 238 if (split.length > 0) { 239 mAppsNotReportingCrashes = new ArraySet<>(); 240 Collections.addAll(mAppsNotReportingCrashes, split); 241 } 242 } 243 } 244 245 void killAppAtUserRequestLocked(ProcessRecord app, Dialog fromDialog) { 246 app.crashing = false; 247 app.crashingReport = null; 248 app.notResponding = false; 249 app.notRespondingReport = null; 250 if (app.anrDialog == fromDialog) { 251 app.anrDialog = null; 252 } 253 if (app.waitDialog == fromDialog) { 254 app.waitDialog = null; 255 } 256 if (app.pid > 0 && app.pid != MY_PID) { 257 handleAppCrashLocked(app, "user-terminated" /*reason*/, 258 null /*shortMsg*/, null /*longMsg*/, null /*stackTrace*/, null /*data*/); 259 app.kill("user request after error", true); 260 } 261 } 262 263 /** 264 * Induce a crash in the given app. 265 * 266 * @param uid if nonnegative, the required matching uid of the target to crash 267 * @param initialPid fast-path match for the target to crash 268 * @param packageName fallback match if the stated pid is not found or doesn't match uid 269 * @param userId If nonnegative, required to identify a match by package name 270 * @param message 271 */ 272 void scheduleAppCrashLocked(int uid, int initialPid, String packageName, int userId, 273 String message) { 274 ProcessRecord proc = null; 275 276 // Figure out which process to kill. We don't trust that initialPid 277 // still has any relation to current pids, so must scan through the 278 // list. 279 280 synchronized (mService.mPidsSelfLocked) { 281 for (int i=0; i<mService.mPidsSelfLocked.size(); i++) { 282 ProcessRecord p = mService.mPidsSelfLocked.valueAt(i); 283 if (uid >= 0 && p.uid != uid) { 284 continue; 285 } 286 if (p.pid == initialPid) { 287 proc = p; 288 break; 289 } 290 if (p.pkgList.containsKey(packageName) 291 && (userId < 0 || p.userId == userId)) { 292 proc = p; 293 } 294 } 295 } 296 297 if (proc == null) { 298 Slog.w(TAG, "crashApplication: nothing for uid=" + uid 299 + " initialPid=" + initialPid 300 + " packageName=" + packageName 301 + " userId=" + userId); 302 return; 303 } 304 305 proc.scheduleCrash(message); 306 } 307 308 /** 309 * Bring up the "unexpected error" dialog box for a crashing app. 310 * Deal with edge cases (intercepts from instrumented applications, 311 * ActivityController, error intent receivers, that sort of thing). 312 * @param r the application crashing 313 * @param crashInfo describing the failure 314 */ 315 void crashApplication(ProcessRecord r, ApplicationErrorReport.CrashInfo crashInfo) { 316 final int callingPid = Binder.getCallingPid(); 317 final int callingUid = Binder.getCallingUid(); 318 319 final long origId = Binder.clearCallingIdentity(); 320 try { 321 crashApplicationInner(r, crashInfo, callingPid, callingUid); 322 } finally { 323 Binder.restoreCallingIdentity(origId); 324 } 325 } 326 327 void crashApplicationInner(ProcessRecord r, ApplicationErrorReport.CrashInfo crashInfo, 328 int callingPid, int callingUid) { 329 long timeMillis = System.currentTimeMillis(); 330 String shortMsg = crashInfo.exceptionClassName; 331 String longMsg = crashInfo.exceptionMessage; 332 String stackTrace = crashInfo.stackTrace; 333 if (shortMsg != null && longMsg != null) { 334 longMsg = shortMsg + ": " + longMsg; 335 } else if (shortMsg != null) { 336 longMsg = shortMsg; 337 } 338 339 // If a persistent app is stuck in a crash loop, the device isn't very 340 // usable, so we want to consider sending out a rescue party. 341 if (r != null && r.persistent) { 342 RescueParty.notePersistentAppCrash(mContext, r.uid); 343 } 344 345 AppErrorResult result = new AppErrorResult(); 346 TaskRecord task; 347 synchronized (mService) { 348 /** 349 * If crash is handled by instance of {@link android.app.IActivityController}, 350 * finish now and don't show the app error dialog. 351 */ 352 if (handleAppCrashInActivityController(r, crashInfo, shortMsg, longMsg, stackTrace, 353 timeMillis, callingPid, callingUid)) { 354 return; 355 } 356 357 /** 358 * If this process was running instrumentation, finish now - it will be handled in 359 * {@link ActivityManagerService#handleAppDiedLocked}. 360 */ 361 if (r != null && r.instr != null) { 362 return; 363 } 364 365 // Log crash in battery stats. 366 if (r != null) { 367 mService.mBatteryStatsService.noteProcessCrash(r.processName, r.uid); 368 } 369 370 AppErrorDialog.Data data = new AppErrorDialog.Data(); 371 data.result = result; 372 data.proc = r; 373 374 // If we can't identify the process or it's already exceeded its crash quota, 375 // quit right away without showing a crash dialog. 376 if (r == null || !makeAppCrashingLocked(r, shortMsg, longMsg, stackTrace, data)) { 377 return; 378 } 379 380 final Message msg = Message.obtain(); 381 msg.what = ActivityManagerService.SHOW_ERROR_UI_MSG; 382 383 task = data.task; 384 msg.obj = data; 385 mService.mUiHandler.sendMessage(msg); 386 } 387 388 int res = result.get(); 389 390 Intent appErrorIntent = null; 391 MetricsLogger.action(mContext, MetricsProto.MetricsEvent.ACTION_APP_CRASH, res); 392 if (res == AppErrorDialog.TIMEOUT || res == AppErrorDialog.CANCEL) { 393 res = AppErrorDialog.FORCE_QUIT; 394 } 395 synchronized (mService) { 396 if (res == AppErrorDialog.MUTE) { 397 stopReportingCrashesLocked(r); 398 } 399 if (res == AppErrorDialog.RESTART) { 400 mService.removeProcessLocked(r, false, true, "crash"); 401 if (task != null) { 402 try { 403 mService.startActivityFromRecents(task.taskId, 404 ActivityOptions.makeBasic().toBundle()); 405 } catch (IllegalArgumentException e) { 406 // Hmm, that didn't work, app might have crashed before creating a 407 // recents entry. Let's see if we have a safe-to-restart intent. 408 final Set<String> cats = task.intent.getCategories(); 409 if (cats != null && cats.contains(Intent.CATEGORY_LAUNCHER)) { 410 mService.startActivityInPackage(task.mCallingUid, 411 task.mCallingPackage, task.intent, null, null, null, 0, 0, 412 ActivityOptions.makeBasic().toBundle(), task.userId, null, 413 "AppErrors"); 414 } 415 } 416 } 417 } 418 if (res == AppErrorDialog.FORCE_QUIT) { 419 long orig = Binder.clearCallingIdentity(); 420 try { 421 // Kill it with fire! 422 mService.mStackSupervisor.handleAppCrashLocked(r); 423 if (!r.persistent) { 424 mService.removeProcessLocked(r, false, false, "crash"); 425 mService.mStackSupervisor.resumeFocusedStackTopActivityLocked(); 426 } 427 } finally { 428 Binder.restoreCallingIdentity(orig); 429 } 430 } 431 if (res == AppErrorDialog.FORCE_QUIT_AND_REPORT) { 432 appErrorIntent = createAppErrorIntentLocked(r, timeMillis, crashInfo); 433 } 434 if (r != null && !r.isolated && res != AppErrorDialog.RESTART) { 435 // XXX Can't keep track of crash time for isolated processes, 436 // since they don't have a persistent identity. 437 mProcessCrashTimes.put(r.info.processName, r.uid, 438 SystemClock.uptimeMillis()); 439 } 440 } 441 442 if (appErrorIntent != null) { 443 try { 444 mContext.startActivityAsUser(appErrorIntent, new UserHandle(r.userId)); 445 } catch (ActivityNotFoundException e) { 446 Slog.w(TAG, "bug report receiver dissappeared", e); 447 } 448 } 449 } 450 451 private boolean handleAppCrashInActivityController(ProcessRecord r, 452 ApplicationErrorReport.CrashInfo crashInfo, 453 String shortMsg, String longMsg, 454 String stackTrace, long timeMillis, 455 int callingPid, int callingUid) { 456 if (mService.mController == null) { 457 return false; 458 } 459 460 try { 461 String name = r != null ? r.processName : null; 462 int pid = r != null ? r.pid : callingPid; 463 int uid = r != null ? r.info.uid : callingUid; 464 if (!mService.mController.appCrashed(name, pid, 465 shortMsg, longMsg, timeMillis, crashInfo.stackTrace)) { 466 if ("1".equals(SystemProperties.get(SYSTEM_DEBUGGABLE, "0")) 467 && "Native crash".equals(crashInfo.exceptionClassName)) { 468 Slog.w(TAG, "Skip killing native crashed app " + name 469 + "(" + pid + ") during testing"); 470 } else { 471 Slog.w(TAG, "Force-killing crashed app " + name 472 + " at watcher's request"); 473 if (r != null) { 474 if (!makeAppCrashingLocked(r, shortMsg, longMsg, stackTrace, null)) 475 { 476 r.kill("crash", true); 477 } 478 } else { 479 // Huh. 480 Process.killProcess(pid); 481 ActivityManagerService.killProcessGroup(uid, pid); 482 } 483 } 484 return true; 485 } 486 } catch (RemoteException e) { 487 mService.mController = null; 488 Watchdog.getInstance().setActivityController(null); 489 } 490 return false; 491 } 492 493 private boolean makeAppCrashingLocked(ProcessRecord app, 494 String shortMsg, String longMsg, String stackTrace, AppErrorDialog.Data data) { 495 app.crashing = true; 496 app.crashingReport = generateProcessError(app, 497 ActivityManager.ProcessErrorStateInfo.CRASHED, null, shortMsg, longMsg, stackTrace); 498 startAppProblemLocked(app); 499 app.stopFreezingAllLocked(); 500 return handleAppCrashLocked(app, "force-crash" /*reason*/, shortMsg, longMsg, stackTrace, 501 data); 502 } 503 504 void startAppProblemLocked(ProcessRecord app) { 505 // If this app is not running under the current user, then we 506 // can't give it a report button because that would require 507 // launching the report UI under a different user. 508 app.errorReportReceiver = null; 509 510 for (int userId : mService.mUserController.getCurrentProfileIdsLocked()) { 511 if (app.userId == userId) { 512 app.errorReportReceiver = ApplicationErrorReport.getErrorReportReceiver( 513 mContext, app.info.packageName, app.info.flags); 514 } 515 } 516 mService.skipCurrentReceiverLocked(app); 517 } 518 519 /** 520 * Generate a process error record, suitable for attachment to a ProcessRecord. 521 * 522 * @param app The ProcessRecord in which the error occurred. 523 * @param condition Crashing, Application Not Responding, etc. Values are defined in 524 * ActivityManager.AppErrorStateInfo 525 * @param activity The activity associated with the crash, if known. 526 * @param shortMsg Short message describing the crash. 527 * @param longMsg Long message describing the crash. 528 * @param stackTrace Full crash stack trace, may be null. 529 * 530 * @return Returns a fully-formed AppErrorStateInfo record. 531 */ 532 private ActivityManager.ProcessErrorStateInfo generateProcessError(ProcessRecord app, 533 int condition, String activity, String shortMsg, String longMsg, String stackTrace) { 534 ActivityManager.ProcessErrorStateInfo report = new ActivityManager.ProcessErrorStateInfo(); 535 536 report.condition = condition; 537 report.processName = app.processName; 538 report.pid = app.pid; 539 report.uid = app.info.uid; 540 report.tag = activity; 541 report.shortMsg = shortMsg; 542 report.longMsg = longMsg; 543 report.stackTrace = stackTrace; 544 545 return report; 546 } 547 548 Intent createAppErrorIntentLocked(ProcessRecord r, 549 long timeMillis, ApplicationErrorReport.CrashInfo crashInfo) { 550 ApplicationErrorReport report = createAppErrorReportLocked(r, timeMillis, crashInfo); 551 if (report == null) { 552 return null; 553 } 554 Intent result = new Intent(Intent.ACTION_APP_ERROR); 555 result.setComponent(r.errorReportReceiver); 556 result.putExtra(Intent.EXTRA_BUG_REPORT, report); 557 result.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 558 return result; 559 } 560 561 private ApplicationErrorReport createAppErrorReportLocked(ProcessRecord r, 562 long timeMillis, ApplicationErrorReport.CrashInfo crashInfo) { 563 if (r.errorReportReceiver == null) { 564 return null; 565 } 566 567 if (!r.crashing && !r.notResponding && !r.forceCrashReport) { 568 return null; 569 } 570 571 ApplicationErrorReport report = new ApplicationErrorReport(); 572 report.packageName = r.info.packageName; 573 report.installerPackageName = r.errorReportReceiver.getPackageName(); 574 report.processName = r.processName; 575 report.time = timeMillis; 576 report.systemApp = (r.info.flags & ApplicationInfo.FLAG_SYSTEM) != 0; 577 578 if (r.crashing || r.forceCrashReport) { 579 report.type = ApplicationErrorReport.TYPE_CRASH; 580 report.crashInfo = crashInfo; 581 } else if (r.notResponding) { 582 report.type = ApplicationErrorReport.TYPE_ANR; 583 report.anrInfo = new ApplicationErrorReport.AnrInfo(); 584 585 report.anrInfo.activity = r.notRespondingReport.tag; 586 report.anrInfo.cause = r.notRespondingReport.shortMsg; 587 report.anrInfo.info = r.notRespondingReport.longMsg; 588 } 589 590 return report; 591 } 592 593 boolean handleAppCrashLocked(ProcessRecord app, String reason, 594 String shortMsg, String longMsg, String stackTrace, AppErrorDialog.Data data) { 595 final long now = SystemClock.uptimeMillis(); 596 final boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(), 597 Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0; 598 599 final boolean procIsBoundForeground = 600 (app.curProcState == ActivityManager.PROCESS_STATE_BOUND_FOREGROUND_SERVICE); 601 602 Long crashTime; 603 Long crashTimePersistent; 604 boolean tryAgain = false; 605 606 if (!app.isolated) { 607 crashTime = mProcessCrashTimes.get(app.info.processName, app.uid); 608 crashTimePersistent = mProcessCrashTimesPersistent.get(app.info.processName, app.uid); 609 } else { 610 crashTime = crashTimePersistent = null; 611 } 612 613 // Bump up the crash count of any services currently running in the proc. 614 for (int i = app.services.size() - 1; i >= 0; i--) { 615 // Any services running in the application need to be placed 616 // back in the pending list. 617 ServiceRecord sr = app.services.valueAt(i); 618 // If the service was restarted a while ago, then reset crash count, else increment it. 619 if (now > sr.restartTime + ProcessList.MIN_CRASH_INTERVAL) { 620 sr.crashCount = 1; 621 } else { 622 sr.crashCount++; 623 } 624 // Allow restarting for started or bound foreground services that are crashing. 625 // This includes wallpapers. 626 if (sr.crashCount < mService.mConstants.BOUND_SERVICE_MAX_CRASH_RETRY 627 && (sr.isForeground || procIsBoundForeground)) { 628 tryAgain = true; 629 } 630 } 631 632 if (crashTime != null && now < crashTime + ProcessList.MIN_CRASH_INTERVAL) { 633 // The process crashed again very quickly. If it was a bound foreground service, let's 634 // try to restart again in a while, otherwise the process loses! 635 Slog.w(TAG, "Process " + app.info.processName 636 + " has crashed too many times: killing!"); 637 EventLog.writeEvent(EventLogTags.AM_PROCESS_CRASHED_TOO_MUCH, 638 app.userId, app.info.processName, app.uid); 639 mService.mStackSupervisor.handleAppCrashLocked(app); 640 if (!app.persistent) { 641 // We don't want to start this process again until the user 642 // explicitly does so... but for persistent process, we really 643 // need to keep it running. If a persistent process is actually 644 // repeatedly crashing, then badness for everyone. 645 EventLog.writeEvent(EventLogTags.AM_PROC_BAD, app.userId, app.uid, 646 app.info.processName); 647 if (!app.isolated) { 648 // XXX We don't have a way to mark isolated processes 649 // as bad, since they don't have a peristent identity. 650 mBadProcesses.put(app.info.processName, app.uid, 651 new BadProcessInfo(now, shortMsg, longMsg, stackTrace)); 652 mProcessCrashTimes.remove(app.info.processName, app.uid); 653 } 654 app.bad = true; 655 app.removed = true; 656 // Don't let services in this process be restarted and potentially 657 // annoy the user repeatedly. Unless it is persistent, since those 658 // processes run critical code. 659 mService.removeProcessLocked(app, false, tryAgain, "crash"); 660 mService.mStackSupervisor.resumeFocusedStackTopActivityLocked(); 661 if (!showBackground) { 662 return false; 663 } 664 } 665 mService.mStackSupervisor.resumeFocusedStackTopActivityLocked(); 666 } else { 667 TaskRecord affectedTask = 668 mService.mStackSupervisor.finishTopRunningActivityLocked(app, reason); 669 if (data != null) { 670 data.task = affectedTask; 671 } 672 if (data != null && crashTimePersistent != null 673 && now < crashTimePersistent + ProcessList.MIN_CRASH_INTERVAL) { 674 data.repeating = true; 675 } 676 } 677 678 if (data != null && tryAgain) { 679 data.isRestartableForService = true; 680 } 681 682 // If the crashing process is what we consider to be the "home process" and it has been 683 // replaced by a third-party app, clear the package preferred activities from packages 684 // with a home activity running in the process to prevent a repeatedly crashing app 685 // from blocking the user to manually clear the list. 686 final ArrayList<ActivityRecord> activities = app.activities; 687 if (app == mService.mHomeProcess && activities.size() > 0 688 && (mService.mHomeProcess.info.flags & ApplicationInfo.FLAG_SYSTEM) == 0) { 689 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 690 final ActivityRecord r = activities.get(activityNdx); 691 if (r.isHomeActivity()) { 692 Log.i(TAG, "Clearing package preferred activities from " + r.packageName); 693 try { 694 ActivityThread.getPackageManager() 695 .clearPackagePreferredActivities(r.packageName); 696 } catch (RemoteException c) { 697 // pm is in same process, this will never happen. 698 } 699 } 700 } 701 } 702 703 if (!app.isolated) { 704 // XXX Can't keep track of crash times for isolated processes, 705 // because they don't have a persistent identity. 706 mProcessCrashTimes.put(app.info.processName, app.uid, now); 707 mProcessCrashTimesPersistent.put(app.info.processName, app.uid, now); 708 } 709 710 if (app.crashHandler != null) mService.mHandler.post(app.crashHandler); 711 return true; 712 } 713 714 void handleShowAppErrorUi(Message msg) { 715 AppErrorDialog.Data data = (AppErrorDialog.Data) msg.obj; 716 boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(), 717 Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0; 718 synchronized (mService) { 719 ProcessRecord proc = data.proc; 720 AppErrorResult res = data.result; 721 if (proc != null && proc.crashDialog != null) { 722 Slog.e(TAG, "App already has crash dialog: " + proc); 723 if (res != null) { 724 res.set(AppErrorDialog.ALREADY_SHOWING); 725 } 726 return; 727 } 728 boolean isBackground = (UserHandle.getAppId(proc.uid) 729 >= Process.FIRST_APPLICATION_UID 730 && proc.pid != MY_PID); 731 for (int userId : mService.mUserController.getCurrentProfileIdsLocked()) { 732 isBackground &= (proc.userId != userId); 733 } 734 if (isBackground && !showBackground) { 735 Slog.w(TAG, "Skipping crash dialog of " + proc + ": background"); 736 if (res != null) { 737 res.set(AppErrorDialog.BACKGROUND_USER); 738 } 739 return; 740 } 741 final boolean crashSilenced = mAppsNotReportingCrashes != null && 742 mAppsNotReportingCrashes.contains(proc.info.packageName); 743 if ((mService.canShowErrorDialogs() || showBackground) && !crashSilenced) { 744 proc.crashDialog = new AppErrorDialog(mContext, mService, data); 745 } else { 746 // The device is asleep, so just pretend that the user 747 // saw a crash dialog and hit "force quit". 748 if (res != null) { 749 res.set(AppErrorDialog.CANT_SHOW); 750 } 751 } 752 } 753 // If we've created a crash dialog, show it without the lock held 754 if(data.proc.crashDialog != null) { 755 Slog.i(TAG, "Showing crash dialog for package " + data.proc.info.packageName 756 + " u" + data.proc.userId); 757 data.proc.crashDialog.show(); 758 } 759 } 760 761 void stopReportingCrashesLocked(ProcessRecord proc) { 762 if (mAppsNotReportingCrashes == null) { 763 mAppsNotReportingCrashes = new ArraySet<>(); 764 } 765 mAppsNotReportingCrashes.add(proc.info.packageName); 766 } 767 768 static boolean isInterestingForBackgroundTraces(ProcessRecord app) { 769 // The system_server is always considered interesting. 770 if (app.pid == MY_PID) { 771 return true; 772 } 773 774 // A package is considered interesting if any of the following is true : 775 // 776 // - It's displaying an activity. 777 // - It's the SystemUI. 778 // - It has an overlay or a top UI visible. 779 // 780 // NOTE: The check whether a given ProcessRecord belongs to the systemui 781 // process is a bit of a kludge, but the same pattern seems repeated at 782 // several places in the system server. 783 return app.isInterestingToUserLocked() || 784 (app.info != null && "com.android.systemui".equals(app.info.packageName)) || 785 (app.hasTopUi || app.hasOverlayUi); 786 } 787 788 final void appNotResponding(ProcessRecord app, ActivityRecord activity, 789 ActivityRecord parent, boolean aboveSystem, final String annotation) { 790 ArrayList<Integer> firstPids = new ArrayList<Integer>(5); 791 SparseArray<Boolean> lastPids = new SparseArray<Boolean>(20); 792 793 if (mService.mController != null) { 794 try { 795 // 0 == continue, -1 = kill process immediately 796 int res = mService.mController.appEarlyNotResponding( 797 app.processName, app.pid, annotation); 798 if (res < 0 && app.pid != MY_PID) { 799 app.kill("anr", true); 800 } 801 } catch (RemoteException e) { 802 mService.mController = null; 803 Watchdog.getInstance().setActivityController(null); 804 } 805 } 806 807 long anrTime = SystemClock.uptimeMillis(); 808 if (ActivityManagerService.MONITOR_CPU_USAGE) { 809 mService.updateCpuStatsNow(); 810 } 811 812 // Unless configured otherwise, swallow ANRs in background processes & kill the process. 813 boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(), 814 Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0; 815 816 boolean isSilentANR; 817 818 synchronized (mService) { 819 // PowerManager.reboot() can block for a long time, so ignore ANRs while shutting down. 820 if (mService.mShuttingDown) { 821 Slog.i(TAG, "During shutdown skipping ANR: " + app + " " + annotation); 822 return; 823 } else if (app.notResponding) { 824 Slog.i(TAG, "Skipping duplicate ANR: " + app + " " + annotation); 825 return; 826 } else if (app.crashing) { 827 Slog.i(TAG, "Crashing app skipping ANR: " + app + " " + annotation); 828 return; 829 } else if (app.killedByAm) { 830 Slog.i(TAG, "App already killed by AM skipping ANR: " + app + " " + annotation); 831 return; 832 } else if (app.killed) { 833 Slog.i(TAG, "Skipping died app ANR: " + app + " " + annotation); 834 return; 835 } 836 837 // In case we come through here for the same app before completing 838 // this one, mark as anring now so we will bail out. 839 app.notResponding = true; 840 841 // Log the ANR to the event log. 842 EventLog.writeEvent(EventLogTags.AM_ANR, app.userId, app.pid, 843 app.processName, app.info.flags, annotation); 844 845 // Dump thread traces as quickly as we can, starting with "interesting" processes. 846 firstPids.add(app.pid); 847 848 // Don't dump other PIDs if it's a background ANR 849 isSilentANR = !showBackground && !isInterestingForBackgroundTraces(app); 850 if (!isSilentANR) { 851 int parentPid = app.pid; 852 if (parent != null && parent.app != null && parent.app.pid > 0) { 853 parentPid = parent.app.pid; 854 } 855 if (parentPid != app.pid) firstPids.add(parentPid); 856 857 if (MY_PID != app.pid && MY_PID != parentPid) firstPids.add(MY_PID); 858 859 for (int i = mService.mLruProcesses.size() - 1; i >= 0; i--) { 860 ProcessRecord r = mService.mLruProcesses.get(i); 861 if (r != null && r.thread != null) { 862 int pid = r.pid; 863 if (pid > 0 && pid != app.pid && pid != parentPid && pid != MY_PID) { 864 if (r.persistent) { 865 firstPids.add(pid); 866 if (DEBUG_ANR) Slog.i(TAG, "Adding persistent proc: " + r); 867 } else if (r.treatLikeActivity) { 868 firstPids.add(pid); 869 if (DEBUG_ANR) Slog.i(TAG, "Adding likely IME: " + r); 870 } else { 871 lastPids.put(pid, Boolean.TRUE); 872 if (DEBUG_ANR) Slog.i(TAG, "Adding ANR proc: " + r); 873 } 874 } 875 } 876 } 877 } 878 } 879 880 // Log the ANR to the main log. 881 StringBuilder info = new StringBuilder(); 882 info.setLength(0); 883 info.append("ANR in ").append(app.processName); 884 if (activity != null && activity.shortComponentName != null) { 885 info.append(" (").append(activity.shortComponentName).append(")"); 886 } 887 info.append("\n"); 888 info.append("PID: ").append(app.pid).append("\n"); 889 if (annotation != null) { 890 info.append("Reason: ").append(annotation).append("\n"); 891 } 892 if (parent != null && parent != activity) { 893 info.append("Parent: ").append(parent.shortComponentName).append("\n"); 894 } 895 896 ProcessCpuTracker processCpuTracker = new ProcessCpuTracker(true); 897 898 // don't dump native PIDs for background ANRs unless it is the process of interest 899 String[] nativeProcs = null; 900 if (isSilentANR) { 901 for (int i = 0; i < NATIVE_STACKS_OF_INTEREST.length; i++) { 902 if (NATIVE_STACKS_OF_INTEREST[i].equals(app.processName)) { 903 nativeProcs = new String[] { app.processName }; 904 break; 905 } 906 } 907 } else { 908 nativeProcs = NATIVE_STACKS_OF_INTEREST; 909 } 910 911 int[] pids = nativeProcs == null ? null : Process.getPidsForCommands(nativeProcs); 912 ArrayList<Integer> nativePids = null; 913 914 if (pids != null) { 915 nativePids = new ArrayList<Integer>(pids.length); 916 for (int i : pids) { 917 nativePids.add(i); 918 } 919 } 920 921 // For background ANRs, don't pass the ProcessCpuTracker to 922 // avoid spending 1/2 second collecting stats to rank lastPids. 923 File tracesFile = ActivityManagerService.dumpStackTraces( 924 true, firstPids, 925 (isSilentANR) ? null : processCpuTracker, 926 (isSilentANR) ? null : lastPids, 927 nativePids); 928 929 String cpuInfo = null; 930 if (ActivityManagerService.MONITOR_CPU_USAGE) { 931 mService.updateCpuStatsNow(); 932 synchronized (mService.mProcessCpuTracker) { 933 cpuInfo = mService.mProcessCpuTracker.printCurrentState(anrTime); 934 } 935 info.append(processCpuTracker.printCurrentLoad()); 936 info.append(cpuInfo); 937 } 938 939 info.append(processCpuTracker.printCurrentState(anrTime)); 940 941 Slog.e(TAG, info.toString()); 942 if (tracesFile == null) { 943 // There is no trace file, so dump (only) the alleged culprit's threads to the log 944 Process.sendSignal(app.pid, Process.SIGNAL_QUIT); 945 } 946 947 mService.addErrorToDropBox("anr", app, app.processName, activity, parent, annotation, 948 cpuInfo, tracesFile, null); 949 950 if (mService.mController != null) { 951 try { 952 // 0 == show dialog, 1 = keep waiting, -1 = kill process immediately 953 int res = mService.mController.appNotResponding( 954 app.processName, app.pid, info.toString()); 955 if (res != 0) { 956 if (res < 0 && app.pid != MY_PID) { 957 app.kill("anr", true); 958 } else { 959 synchronized (mService) { 960 mService.mServices.scheduleServiceTimeoutLocked(app); 961 } 962 } 963 return; 964 } 965 } catch (RemoteException e) { 966 mService.mController = null; 967 Watchdog.getInstance().setActivityController(null); 968 } 969 } 970 971 synchronized (mService) { 972 mService.mBatteryStatsService.noteProcessAnr(app.processName, app.uid); 973 974 if (isSilentANR) { 975 app.kill("bg anr", true); 976 return; 977 } 978 979 // Set the app's notResponding state, and look up the errorReportReceiver 980 makeAppNotRespondingLocked(app, 981 activity != null ? activity.shortComponentName : null, 982 annotation != null ? "ANR " + annotation : "ANR", 983 info.toString()); 984 985 // Bring up the infamous App Not Responding dialog 986 Message msg = Message.obtain(); 987 HashMap<String, Object> map = new HashMap<String, Object>(); 988 msg.what = ActivityManagerService.SHOW_NOT_RESPONDING_UI_MSG; 989 msg.obj = map; 990 msg.arg1 = aboveSystem ? 1 : 0; 991 map.put("app", app); 992 if (activity != null) { 993 map.put("activity", activity); 994 } 995 996 mService.mUiHandler.sendMessage(msg); 997 } 998 } 999 1000 private void makeAppNotRespondingLocked(ProcessRecord app, 1001 String activity, String shortMsg, String longMsg) { 1002 app.notResponding = true; 1003 app.notRespondingReport = generateProcessError(app, 1004 ActivityManager.ProcessErrorStateInfo.NOT_RESPONDING, 1005 activity, shortMsg, longMsg, null); 1006 startAppProblemLocked(app); 1007 app.stopFreezingAllLocked(); 1008 } 1009 1010 void handleShowAnrUi(Message msg) { 1011 Dialog d = null; 1012 synchronized (mService) { 1013 HashMap<String, Object> data = (HashMap<String, Object>) msg.obj; 1014 ProcessRecord proc = (ProcessRecord)data.get("app"); 1015 if (proc != null && proc.anrDialog != null) { 1016 Slog.e(TAG, "App already has anr dialog: " + proc); 1017 MetricsLogger.action(mContext, MetricsProto.MetricsEvent.ACTION_APP_ANR, 1018 AppNotRespondingDialog.ALREADY_SHOWING); 1019 return; 1020 } 1021 1022 Intent intent = new Intent("android.intent.action.ANR"); 1023 if (!mService.mProcessesReady) { 1024 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY 1025 | Intent.FLAG_RECEIVER_FOREGROUND); 1026 } 1027 mService.broadcastIntentLocked(null, null, intent, 1028 null, null, 0, null, null, null, AppOpsManager.OP_NONE, 1029 null, false, false, MY_PID, Process.SYSTEM_UID, 0 /* TODO: Verify */); 1030 1031 boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(), 1032 Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0; 1033 if (mService.canShowErrorDialogs() || showBackground) { 1034 d = new AppNotRespondingDialog(mService, 1035 mContext, proc, (ActivityRecord)data.get("activity"), 1036 msg.arg1 != 0); 1037 proc.anrDialog = d; 1038 } else { 1039 MetricsLogger.action(mContext, MetricsProto.MetricsEvent.ACTION_APP_ANR, 1040 AppNotRespondingDialog.CANT_SHOW); 1041 // Just kill the app if there is no dialog to be shown. 1042 mService.killAppAtUsersRequest(proc, null); 1043 } 1044 } 1045 // If we've created a crash dialog, show it without the lock held 1046 if (d != null) { 1047 d.show(); 1048 } 1049 } 1050 1051 /** 1052 * Information about a process that is currently marked as bad. 1053 */ 1054 static final class BadProcessInfo { 1055 BadProcessInfo(long time, String shortMsg, String longMsg, String stack) { 1056 this.time = time; 1057 this.shortMsg = shortMsg; 1058 this.longMsg = longMsg; 1059 this.stack = stack; 1060 } 1061 1062 final long time; 1063 final String shortMsg; 1064 final String longMsg; 1065 final String stack; 1066 } 1067 1068 } 1069