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, 412 null, null, null, 0, 0, 413 ActivityOptions.makeBasic().toBundle(), 414 task.userId, null, null, "AppErrors"); 415 } 416 } 417 } 418 } 419 if (res == AppErrorDialog.FORCE_QUIT) { 420 long orig = Binder.clearCallingIdentity(); 421 try { 422 // Kill it with fire! 423 mService.mStackSupervisor.handleAppCrashLocked(r); 424 if (!r.persistent) { 425 mService.removeProcessLocked(r, false, false, "crash"); 426 mService.mStackSupervisor.resumeFocusedStackTopActivityLocked(); 427 } 428 } finally { 429 Binder.restoreCallingIdentity(orig); 430 } 431 } 432 if (res == AppErrorDialog.FORCE_QUIT_AND_REPORT) { 433 appErrorIntent = createAppErrorIntentLocked(r, timeMillis, crashInfo); 434 } 435 if (r != null && !r.isolated && res != AppErrorDialog.RESTART) { 436 // XXX Can't keep track of crash time for isolated processes, 437 // since they don't have a persistent identity. 438 mProcessCrashTimes.put(r.info.processName, r.uid, 439 SystemClock.uptimeMillis()); 440 } 441 } 442 443 if (appErrorIntent != null) { 444 try { 445 mContext.startActivityAsUser(appErrorIntent, new UserHandle(r.userId)); 446 } catch (ActivityNotFoundException e) { 447 Slog.w(TAG, "bug report receiver dissappeared", e); 448 } 449 } 450 } 451 452 private boolean handleAppCrashInActivityController(ProcessRecord r, 453 ApplicationErrorReport.CrashInfo crashInfo, 454 String shortMsg, String longMsg, 455 String stackTrace, long timeMillis, 456 int callingPid, int callingUid) { 457 if (mService.mController == null) { 458 return false; 459 } 460 461 try { 462 String name = r != null ? r.processName : null; 463 int pid = r != null ? r.pid : callingPid; 464 int uid = r != null ? r.info.uid : callingUid; 465 if (!mService.mController.appCrashed(name, pid, 466 shortMsg, longMsg, timeMillis, crashInfo.stackTrace)) { 467 if ("1".equals(SystemProperties.get(SYSTEM_DEBUGGABLE, "0")) 468 && "Native crash".equals(crashInfo.exceptionClassName)) { 469 Slog.w(TAG, "Skip killing native crashed app " + name 470 + "(" + pid + ") during testing"); 471 } else { 472 Slog.w(TAG, "Force-killing crashed app " + name 473 + " at watcher's request"); 474 if (r != null) { 475 if (!makeAppCrashingLocked(r, shortMsg, longMsg, stackTrace, null)) 476 { 477 r.kill("crash", true); 478 } 479 } else { 480 // Huh. 481 Process.killProcess(pid); 482 ActivityManagerService.killProcessGroup(uid, pid); 483 } 484 } 485 return true; 486 } 487 } catch (RemoteException e) { 488 mService.mController = null; 489 Watchdog.getInstance().setActivityController(null); 490 } 491 return false; 492 } 493 494 private boolean makeAppCrashingLocked(ProcessRecord app, 495 String shortMsg, String longMsg, String stackTrace, AppErrorDialog.Data data) { 496 app.crashing = true; 497 app.crashingReport = generateProcessError(app, 498 ActivityManager.ProcessErrorStateInfo.CRASHED, null, shortMsg, longMsg, stackTrace); 499 startAppProblemLocked(app); 500 app.stopFreezingAllLocked(); 501 return handleAppCrashLocked(app, "force-crash" /*reason*/, shortMsg, longMsg, stackTrace, 502 data); 503 } 504 505 void startAppProblemLocked(ProcessRecord app) { 506 // If this app is not running under the current user, then we 507 // can't give it a report button because that would require 508 // launching the report UI under a different user. 509 app.errorReportReceiver = null; 510 511 for (int userId : mService.mUserController.getCurrentProfileIdsLocked()) { 512 if (app.userId == userId) { 513 app.errorReportReceiver = ApplicationErrorReport.getErrorReportReceiver( 514 mContext, app.info.packageName, app.info.flags); 515 } 516 } 517 mService.skipCurrentReceiverLocked(app); 518 } 519 520 /** 521 * Generate a process error record, suitable for attachment to a ProcessRecord. 522 * 523 * @param app The ProcessRecord in which the error occurred. 524 * @param condition Crashing, Application Not Responding, etc. Values are defined in 525 * ActivityManager.AppErrorStateInfo 526 * @param activity The activity associated with the crash, if known. 527 * @param shortMsg Short message describing the crash. 528 * @param longMsg Long message describing the crash. 529 * @param stackTrace Full crash stack trace, may be null. 530 * 531 * @return Returns a fully-formed AppErrorStateInfo record. 532 */ 533 private ActivityManager.ProcessErrorStateInfo generateProcessError(ProcessRecord app, 534 int condition, String activity, String shortMsg, String longMsg, String stackTrace) { 535 ActivityManager.ProcessErrorStateInfo report = new ActivityManager.ProcessErrorStateInfo(); 536 537 report.condition = condition; 538 report.processName = app.processName; 539 report.pid = app.pid; 540 report.uid = app.info.uid; 541 report.tag = activity; 542 report.shortMsg = shortMsg; 543 report.longMsg = longMsg; 544 report.stackTrace = stackTrace; 545 546 return report; 547 } 548 549 Intent createAppErrorIntentLocked(ProcessRecord r, 550 long timeMillis, ApplicationErrorReport.CrashInfo crashInfo) { 551 ApplicationErrorReport report = createAppErrorReportLocked(r, timeMillis, crashInfo); 552 if (report == null) { 553 return null; 554 } 555 Intent result = new Intent(Intent.ACTION_APP_ERROR); 556 result.setComponent(r.errorReportReceiver); 557 result.putExtra(Intent.EXTRA_BUG_REPORT, report); 558 result.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 559 return result; 560 } 561 562 private ApplicationErrorReport createAppErrorReportLocked(ProcessRecord r, 563 long timeMillis, ApplicationErrorReport.CrashInfo crashInfo) { 564 if (r.errorReportReceiver == null) { 565 return null; 566 } 567 568 if (!r.crashing && !r.notResponding && !r.forceCrashReport) { 569 return null; 570 } 571 572 ApplicationErrorReport report = new ApplicationErrorReport(); 573 report.packageName = r.info.packageName; 574 report.installerPackageName = r.errorReportReceiver.getPackageName(); 575 report.processName = r.processName; 576 report.time = timeMillis; 577 report.systemApp = (r.info.flags & ApplicationInfo.FLAG_SYSTEM) != 0; 578 579 if (r.crashing || r.forceCrashReport) { 580 report.type = ApplicationErrorReport.TYPE_CRASH; 581 report.crashInfo = crashInfo; 582 } else if (r.notResponding) { 583 report.type = ApplicationErrorReport.TYPE_ANR; 584 report.anrInfo = new ApplicationErrorReport.AnrInfo(); 585 586 report.anrInfo.activity = r.notRespondingReport.tag; 587 report.anrInfo.cause = r.notRespondingReport.shortMsg; 588 report.anrInfo.info = r.notRespondingReport.longMsg; 589 } 590 591 return report; 592 } 593 594 boolean handleAppCrashLocked(ProcessRecord app, String reason, 595 String shortMsg, String longMsg, String stackTrace, AppErrorDialog.Data data) { 596 long now = SystemClock.uptimeMillis(); 597 boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(), 598 Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0; 599 600 Long crashTime; 601 Long crashTimePersistent; 602 if (!app.isolated) { 603 crashTime = mProcessCrashTimes.get(app.info.processName, app.uid); 604 crashTimePersistent = mProcessCrashTimesPersistent.get(app.info.processName, app.uid); 605 } else { 606 crashTime = crashTimePersistent = null; 607 } 608 if (crashTime != null && now < crashTime+ProcessList.MIN_CRASH_INTERVAL) { 609 // This process loses! 610 Slog.w(TAG, "Process " + app.info.processName 611 + " has crashed too many times: killing!"); 612 EventLog.writeEvent(EventLogTags.AM_PROCESS_CRASHED_TOO_MUCH, 613 app.userId, app.info.processName, app.uid); 614 mService.mStackSupervisor.handleAppCrashLocked(app); 615 if (!app.persistent) { 616 // We don't want to start this process again until the user 617 // explicitly does so... but for persistent process, we really 618 // need to keep it running. If a persistent process is actually 619 // repeatedly crashing, then badness for everyone. 620 EventLog.writeEvent(EventLogTags.AM_PROC_BAD, app.userId, app.uid, 621 app.info.processName); 622 if (!app.isolated) { 623 // XXX We don't have a way to mark isolated processes 624 // as bad, since they don't have a peristent identity. 625 mBadProcesses.put(app.info.processName, app.uid, 626 new BadProcessInfo(now, shortMsg, longMsg, stackTrace)); 627 mProcessCrashTimes.remove(app.info.processName, app.uid); 628 } 629 app.bad = true; 630 app.removed = true; 631 // Don't let services in this process be restarted and potentially 632 // annoy the user repeatedly. Unless it is persistent, since those 633 // processes run critical code. 634 mService.removeProcessLocked(app, false, false, "crash"); 635 mService.mStackSupervisor.resumeFocusedStackTopActivityLocked(); 636 if (!showBackground) { 637 return false; 638 } 639 } 640 mService.mStackSupervisor.resumeFocusedStackTopActivityLocked(); 641 } else { 642 TaskRecord affectedTask = 643 mService.mStackSupervisor.finishTopRunningActivityLocked(app, reason); 644 if (data != null) { 645 data.task = affectedTask; 646 } 647 if (data != null && crashTimePersistent != null 648 && now < crashTimePersistent + ProcessList.MIN_CRASH_INTERVAL) { 649 data.repeating = true; 650 } 651 } 652 653 boolean procIsBoundForeground = 654 (app.curProcState == ActivityManager.PROCESS_STATE_BOUND_FOREGROUND_SERVICE); 655 // Bump up the crash count of any services currently running in the proc. 656 for (int i=app.services.size()-1; i>=0; i--) { 657 // Any services running in the application need to be placed 658 // back in the pending list. 659 ServiceRecord sr = app.services.valueAt(i); 660 sr.crashCount++; 661 662 // Allow restarting for started or bound foreground services that are crashing the 663 // first time. This includes wallpapers. 664 if ((data != null) && (sr.crashCount <= 1) 665 && (sr.isForeground || procIsBoundForeground)) { 666 data.isRestartableForService = true; 667 } 668 } 669 670 // If the crashing process is what we consider to be the "home process" and it has been 671 // replaced by a third-party app, clear the package preferred activities from packages 672 // with a home activity running in the process to prevent a repeatedly crashing app 673 // from blocking the user to manually clear the list. 674 final ArrayList<ActivityRecord> activities = app.activities; 675 if (app == mService.mHomeProcess && activities.size() > 0 676 && (mService.mHomeProcess.info.flags & ApplicationInfo.FLAG_SYSTEM) == 0) { 677 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 678 final ActivityRecord r = activities.get(activityNdx); 679 if (r.isHomeActivity()) { 680 Log.i(TAG, "Clearing package preferred activities from " + r.packageName); 681 try { 682 ActivityThread.getPackageManager() 683 .clearPackagePreferredActivities(r.packageName); 684 } catch (RemoteException c) { 685 // pm is in same process, this will never happen. 686 } 687 } 688 } 689 } 690 691 if (!app.isolated) { 692 // XXX Can't keep track of crash times for isolated processes, 693 // because they don't have a perisistent identity. 694 mProcessCrashTimes.put(app.info.processName, app.uid, now); 695 mProcessCrashTimesPersistent.put(app.info.processName, app.uid, now); 696 } 697 698 if (app.crashHandler != null) mService.mHandler.post(app.crashHandler); 699 return true; 700 } 701 702 void handleShowAppErrorUi(Message msg) { 703 AppErrorDialog.Data data = (AppErrorDialog.Data) msg.obj; 704 boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(), 705 Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0; 706 synchronized (mService) { 707 ProcessRecord proc = data.proc; 708 AppErrorResult res = data.result; 709 if (proc != null && proc.crashDialog != null) { 710 Slog.e(TAG, "App already has crash dialog: " + proc); 711 if (res != null) { 712 res.set(AppErrorDialog.ALREADY_SHOWING); 713 } 714 return; 715 } 716 boolean isBackground = (UserHandle.getAppId(proc.uid) 717 >= Process.FIRST_APPLICATION_UID 718 && proc.pid != MY_PID); 719 for (int userId : mService.mUserController.getCurrentProfileIdsLocked()) { 720 isBackground &= (proc.userId != userId); 721 } 722 if (isBackground && !showBackground) { 723 Slog.w(TAG, "Skipping crash dialog of " + proc + ": background"); 724 if (res != null) { 725 res.set(AppErrorDialog.BACKGROUND_USER); 726 } 727 return; 728 } 729 final boolean crashSilenced = mAppsNotReportingCrashes != null && 730 mAppsNotReportingCrashes.contains(proc.info.packageName); 731 if ((mService.canShowErrorDialogs() || showBackground) && !crashSilenced) { 732 proc.crashDialog = new AppErrorDialog(mContext, mService, data); 733 } else { 734 // The device is asleep, so just pretend that the user 735 // saw a crash dialog and hit "force quit". 736 if (res != null) { 737 res.set(AppErrorDialog.CANT_SHOW); 738 } 739 } 740 } 741 // If we've created a crash dialog, show it without the lock held 742 if(data.proc.crashDialog != null) { 743 Slog.i(TAG, "Showing crash dialog for package " + data.proc.info.packageName 744 + " u" + data.proc.userId); 745 data.proc.crashDialog.show(); 746 } 747 } 748 749 void stopReportingCrashesLocked(ProcessRecord proc) { 750 if (mAppsNotReportingCrashes == null) { 751 mAppsNotReportingCrashes = new ArraySet<>(); 752 } 753 mAppsNotReportingCrashes.add(proc.info.packageName); 754 } 755 756 static boolean isInterestingForBackgroundTraces(ProcessRecord app) { 757 // The system_server is always considered interesting. 758 if (app.pid == MY_PID) { 759 return true; 760 } 761 762 // A package is considered interesting if any of the following is true : 763 // 764 // - It's displaying an activity. 765 // - It's the SystemUI. 766 // - It has an overlay or a top UI visible. 767 // 768 // NOTE: The check whether a given ProcessRecord belongs to the systemui 769 // process is a bit of a kludge, but the same pattern seems repeated at 770 // several places in the system server. 771 return app.isInterestingToUserLocked() || 772 (app.info != null && "com.android.systemui".equals(app.info.packageName)) || 773 (app.hasTopUi || app.hasOverlayUi); 774 } 775 776 final void appNotResponding(ProcessRecord app, ActivityRecord activity, 777 ActivityRecord parent, boolean aboveSystem, final String annotation) { 778 ArrayList<Integer> firstPids = new ArrayList<Integer>(5); 779 SparseArray<Boolean> lastPids = new SparseArray<Boolean>(20); 780 781 if (mService.mController != null) { 782 try { 783 // 0 == continue, -1 = kill process immediately 784 int res = mService.mController.appEarlyNotResponding( 785 app.processName, app.pid, annotation); 786 if (res < 0 && app.pid != MY_PID) { 787 app.kill("anr", true); 788 } 789 } catch (RemoteException e) { 790 mService.mController = null; 791 Watchdog.getInstance().setActivityController(null); 792 } 793 } 794 795 long anrTime = SystemClock.uptimeMillis(); 796 if (ActivityManagerService.MONITOR_CPU_USAGE) { 797 mService.updateCpuStatsNow(); 798 } 799 800 // Unless configured otherwise, swallow ANRs in background processes & kill the process. 801 boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(), 802 Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0; 803 804 boolean isSilentANR; 805 806 synchronized (mService) { 807 // PowerManager.reboot() can block for a long time, so ignore ANRs while shutting down. 808 if (mService.mShuttingDown) { 809 Slog.i(TAG, "During shutdown skipping ANR: " + app + " " + annotation); 810 return; 811 } else if (app.notResponding) { 812 Slog.i(TAG, "Skipping duplicate ANR: " + app + " " + annotation); 813 return; 814 } else if (app.crashing) { 815 Slog.i(TAG, "Crashing app skipping ANR: " + app + " " + annotation); 816 return; 817 } else if (app.killedByAm) { 818 Slog.i(TAG, "App already killed by AM skipping ANR: " + app + " " + annotation); 819 return; 820 } else if (app.killed) { 821 Slog.i(TAG, "Skipping died app ANR: " + app + " " + annotation); 822 return; 823 } 824 825 // In case we come through here for the same app before completing 826 // this one, mark as anring now so we will bail out. 827 app.notResponding = true; 828 829 // Log the ANR to the event log. 830 EventLog.writeEvent(EventLogTags.AM_ANR, app.userId, app.pid, 831 app.processName, app.info.flags, annotation); 832 833 // Dump thread traces as quickly as we can, starting with "interesting" processes. 834 firstPids.add(app.pid); 835 836 // Don't dump other PIDs if it's a background ANR 837 isSilentANR = !showBackground && !isInterestingForBackgroundTraces(app); 838 if (!isSilentANR) { 839 int parentPid = app.pid; 840 if (parent != null && parent.app != null && parent.app.pid > 0) { 841 parentPid = parent.app.pid; 842 } 843 if (parentPid != app.pid) firstPids.add(parentPid); 844 845 if (MY_PID != app.pid && MY_PID != parentPid) firstPids.add(MY_PID); 846 847 for (int i = mService.mLruProcesses.size() - 1; i >= 0; i--) { 848 ProcessRecord r = mService.mLruProcesses.get(i); 849 if (r != null && r.thread != null) { 850 int pid = r.pid; 851 if (pid > 0 && pid != app.pid && pid != parentPid && pid != MY_PID) { 852 if (r.persistent) { 853 firstPids.add(pid); 854 if (DEBUG_ANR) Slog.i(TAG, "Adding persistent proc: " + r); 855 } else if (r.treatLikeActivity) { 856 firstPids.add(pid); 857 if (DEBUG_ANR) Slog.i(TAG, "Adding likely IME: " + r); 858 } else { 859 lastPids.put(pid, Boolean.TRUE); 860 if (DEBUG_ANR) Slog.i(TAG, "Adding ANR proc: " + r); 861 } 862 } 863 } 864 } 865 } 866 } 867 868 // Log the ANR to the main log. 869 StringBuilder info = new StringBuilder(); 870 info.setLength(0); 871 info.append("ANR in ").append(app.processName); 872 if (activity != null && activity.shortComponentName != null) { 873 info.append(" (").append(activity.shortComponentName).append(")"); 874 } 875 info.append("\n"); 876 info.append("PID: ").append(app.pid).append("\n"); 877 if (annotation != null) { 878 info.append("Reason: ").append(annotation).append("\n"); 879 } 880 if (parent != null && parent != activity) { 881 info.append("Parent: ").append(parent.shortComponentName).append("\n"); 882 } 883 884 ProcessCpuTracker processCpuTracker = new ProcessCpuTracker(true); 885 886 // don't dump native PIDs for background ANRs unless it is the process of interest 887 String[] nativeProcs = null; 888 if (isSilentANR) { 889 for (int i = 0; i < NATIVE_STACKS_OF_INTEREST.length; i++) { 890 if (NATIVE_STACKS_OF_INTEREST[i].equals(app.processName)) { 891 nativeProcs = new String[] { app.processName }; 892 break; 893 } 894 } 895 } else { 896 nativeProcs = NATIVE_STACKS_OF_INTEREST; 897 } 898 899 int[] pids = nativeProcs == null ? null : Process.getPidsForCommands(nativeProcs); 900 ArrayList<Integer> nativePids = null; 901 902 if (pids != null) { 903 nativePids = new ArrayList<Integer>(pids.length); 904 for (int i : pids) { 905 nativePids.add(i); 906 } 907 } 908 909 // For background ANRs, don't pass the ProcessCpuTracker to 910 // avoid spending 1/2 second collecting stats to rank lastPids. 911 File tracesFile = mService.dumpStackTraces(true, firstPids, 912 (isSilentANR) ? null : processCpuTracker, 913 (isSilentANR) ? null : lastPids, 914 nativePids); 915 916 String cpuInfo = null; 917 if (ActivityManagerService.MONITOR_CPU_USAGE) { 918 mService.updateCpuStatsNow(); 919 synchronized (mService.mProcessCpuTracker) { 920 cpuInfo = mService.mProcessCpuTracker.printCurrentState(anrTime); 921 } 922 info.append(processCpuTracker.printCurrentLoad()); 923 info.append(cpuInfo); 924 } 925 926 info.append(processCpuTracker.printCurrentState(anrTime)); 927 928 Slog.e(TAG, info.toString()); 929 if (tracesFile == null) { 930 // There is no trace file, so dump (only) the alleged culprit's threads to the log 931 Process.sendSignal(app.pid, Process.SIGNAL_QUIT); 932 } 933 934 mService.addErrorToDropBox("anr", app, app.processName, activity, parent, annotation, 935 cpuInfo, tracesFile, null); 936 937 if (mService.mController != null) { 938 try { 939 // 0 == show dialog, 1 = keep waiting, -1 = kill process immediately 940 int res = mService.mController.appNotResponding( 941 app.processName, app.pid, info.toString()); 942 if (res != 0) { 943 if (res < 0 && app.pid != MY_PID) { 944 app.kill("anr", true); 945 } else { 946 synchronized (mService) { 947 mService.mServices.scheduleServiceTimeoutLocked(app); 948 } 949 } 950 return; 951 } 952 } catch (RemoteException e) { 953 mService.mController = null; 954 Watchdog.getInstance().setActivityController(null); 955 } 956 } 957 958 synchronized (mService) { 959 mService.mBatteryStatsService.noteProcessAnr(app.processName, app.uid); 960 961 if (isSilentANR) { 962 app.kill("bg anr", true); 963 return; 964 } 965 966 // Set the app's notResponding state, and look up the errorReportReceiver 967 makeAppNotRespondingLocked(app, 968 activity != null ? activity.shortComponentName : null, 969 annotation != null ? "ANR " + annotation : "ANR", 970 info.toString()); 971 972 // Bring up the infamous App Not Responding dialog 973 Message msg = Message.obtain(); 974 HashMap<String, Object> map = new HashMap<String, Object>(); 975 msg.what = ActivityManagerService.SHOW_NOT_RESPONDING_UI_MSG; 976 msg.obj = map; 977 msg.arg1 = aboveSystem ? 1 : 0; 978 map.put("app", app); 979 if (activity != null) { 980 map.put("activity", activity); 981 } 982 983 mService.mUiHandler.sendMessage(msg); 984 } 985 } 986 987 private void makeAppNotRespondingLocked(ProcessRecord app, 988 String activity, String shortMsg, String longMsg) { 989 app.notResponding = true; 990 app.notRespondingReport = generateProcessError(app, 991 ActivityManager.ProcessErrorStateInfo.NOT_RESPONDING, 992 activity, shortMsg, longMsg, null); 993 startAppProblemLocked(app); 994 app.stopFreezingAllLocked(); 995 } 996 997 void handleShowAnrUi(Message msg) { 998 Dialog d = null; 999 synchronized (mService) { 1000 HashMap<String, Object> data = (HashMap<String, Object>) msg.obj; 1001 ProcessRecord proc = (ProcessRecord)data.get("app"); 1002 if (proc != null && proc.anrDialog != null) { 1003 Slog.e(TAG, "App already has anr dialog: " + proc); 1004 MetricsLogger.action(mContext, MetricsProto.MetricsEvent.ACTION_APP_ANR, 1005 AppNotRespondingDialog.ALREADY_SHOWING); 1006 return; 1007 } 1008 1009 Intent intent = new Intent("android.intent.action.ANR"); 1010 if (!mService.mProcessesReady) { 1011 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY 1012 | Intent.FLAG_RECEIVER_FOREGROUND); 1013 } 1014 mService.broadcastIntentLocked(null, null, intent, 1015 null, null, 0, null, null, null, AppOpsManager.OP_NONE, 1016 null, false, false, MY_PID, Process.SYSTEM_UID, 0 /* TODO: Verify */); 1017 1018 boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(), 1019 Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0; 1020 if (mService.canShowErrorDialogs() || showBackground) { 1021 d = new AppNotRespondingDialog(mService, 1022 mContext, proc, (ActivityRecord)data.get("activity"), 1023 msg.arg1 != 0); 1024 proc.anrDialog = d; 1025 } else { 1026 MetricsLogger.action(mContext, MetricsProto.MetricsEvent.ACTION_APP_ANR, 1027 AppNotRespondingDialog.CANT_SHOW); 1028 // Just kill the app if there is no dialog to be shown. 1029 mService.killAppAtUsersRequest(proc, null); 1030 } 1031 } 1032 // If we've created a crash dialog, show it without the lock held 1033 if (d != null) { 1034 d.show(); 1035 } 1036 } 1037 1038 /** 1039 * Information about a process that is currently marked as bad. 1040 */ 1041 static final class BadProcessInfo { 1042 BadProcessInfo(long time, String shortMsg, String longMsg, String stack) { 1043 this.time = time; 1044 this.shortMsg = shortMsg; 1045 this.longMsg = longMsg; 1046 this.stack = stack; 1047 } 1048 1049 final long time; 1050 final String shortMsg; 1051 final String longMsg; 1052 final String stack; 1053 } 1054 1055 } 1056
