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Commit 9ce0a7c2 authored by Zim's avatar Zim
Browse files

Dump the FUSE daemons stacks during ANRs 

The FUSE daemons hosted in the MediaProvider processes are very
critical to device health. Note that there is one FUSE daemon per
Androd user.

Vold has a strong dependency on them when mounting volumes and bugs in
the daemons can cause vold to wedge, leading to watchdog triggered
runtime restarts.

We now add any processes running as the process name of the
MediaStore.AUTHORITY to the list of 'interesting' Java processes to
dump stacks for from Watchdog.

Test: Manually triggered watchdog event dumps FUSE daemon process
Bug: 149970494
Bug: 150525627
Change-Id: I3d6e52f8dad08c2ee5d520274f9a9f522f5ab9d3
parent c0c15419

services/core/java/com/android/server/StorageManagerService.java

+3 −0
Original line number Diff line number Diff line
@@ -335,6 +335,8 @@ class StorageManagerService extends IStorageManager.Stub 
            Manifest.permission.WRITE_EXTERNAL_STORAGE

    };



    @Nullable public static String sMediaStoreAuthorityProcessName;



    private final AtomicFile mSettingsFile;



    /**
@@ -1840,6 +1842,7 @@ class StorageManagerService extends IStorageManager.Stub 
                UserHandle.getUserId(UserHandle.USER_SYSTEM));

        if (provider != null) {

            mMediaStoreAuthorityAppId = UserHandle.getAppId(provider.applicationInfo.uid);

            sMediaStoreAuthorityProcessName = provider.applicationInfo.processName;

        }



        provider = mPmInternal.resolveContentProvider(

services/core/java/com/android/server/Watchdog.java

+2 −1
Original line number Diff line number Diff line
@@ -361,7 +361,8 @@ public class Watchdog extends Thread { 
    }



    private static boolean isInterestingJavaProcess(String processName) {

        return processName.equals("com.android.phone");

        return processName.equals(StorageManagerService.sMediaStoreAuthorityProcessName)

                || processName.equals("com.android.phone");

    }



    /**