[G4 Android Development] xrad:
I just observed multiple sudden stops while listening to downloaded tracks in Google music. Apparently the system decided to eject the SD card.

Why would that happen? I was riding on a bike an not touching the phone at all when this happened.

H815, December 15 nightly, no mods, default kernel.

12-15 12:22:08.773 D/MountService( 3646): Volume public:179_65 broadcasting ejecting to UserHandle{0}

12-15 12:22:08.790 I/ActivityManager( 3646): Start proc 15212:com.android.externalstorage/u0a10 for broadcast com.android.externalstorage/.MountReceiver

12-15 12:22:08.891 E/ProcessKiller( 379): Process /system/bin/mediaserver (455) has open file /storage/D92E-4FD5/Android/data/com.google.android.music/files/music/4386.mp3

12-15 12:22:08.891 W/ProcessKiller( 379): Sending Interrupt to process 455

12-15 12:22:08.911 W/ProcessKiller( 379): 455 kill successfully

12-15 12:22:09.001 I/ActivityManager( 3646): Start proc 15231:com.amazon.mShop.android.shopping/u0a137 for broadcast com.amazon.mShop.android.shopping/com.amazon.clouddrive.library.device.receivers.ExternalMediaChangeReceiverProxy

12-15 12:22:09.224 E/ProcessKiller( 379): Process com.google.android.music:ui (14704) has open file /storage/D92E-4FD5/Android/data/com.google.android.music/files/artwork/1295548619_1400.webp

12-15 12:22:09.224 W/ProcessKiller( 379): Sending Interrupt to process 14704

12-15 12:22:09.315 I/WindowManager( 3646): WIN DEATH: Window{f6c688d u0 com.google.android.music/com.android.music.activitymanagement.TopLevelActivity}

12-15 12:22:09.316 I/ActivityManager( 3646): Process com.google.android.music:ui (pid 14704) has died

12-15 12:22:09.316 D/ActivityManager( 3646): cleanUpApplicationRecord -- 14704

12-15 12:22:09.360 I/ActivityManager( 3646): Start proc 15262:com.google.android.music:ui/u0a148 for activity com.google.android.music/com.android.music.activitymanagement.TopLevelActivity

12-15 12:22:09.367 W/ProcessKiller( 379): 14704 kill successfully

12-15 12:22:09.369 E/ProcessKiller( 379): Process com.google.android.music:main (14723) has open file /storage/D92E-4FD5/Android/data/com.google.android.music/files/artwork/153242008_1400.webp

12-15 12:22:09.369 W/ProcessKiller( 379): Sending Interrupt to process 14723

12-15 12:22:09.418 D/BluetoothManagerService( 3646): Message: 20

12-15 12:22:09.418 D/BluetoothManagerService( 3646): Added callback: android.bluetooth.IBluetoothManagerCallback$Stub$Proxy@ae4bbf6:true

12-15 12:22:09.452 E/BatteryStatsService( 3646): no controller energy info supplied

12-15 12:22:09.453 I/ActivityManager( 3646): Process com.google.android.music:main (pid 14723) has died

12-15 12:22:09.454 D/ActivityManager( 3646): cleanUpApplicationRecord -- 14723

12-15 12:22:09.468 W/ActivityManager( 3646): Scheduling restart of crashed service com.google.android.music/.playback.MusicPlaybackService in 1000ms

12-15 12:22:09.472 W/ProcessKiller( 379): 14723 kill successfully

12-15 12:22:09.556 I/ActivityManager( 3646): Start proc 15301:com.google.android.music:main/u0a148 for service com.google.android.music/.preferences.MusicPreferenceService$MusicPreferenceServiceBinder

12-15 12:22:09.566 D/VoldConnector( 3646): RCV <- {651 public:179_65 0}

12-15 12:22:09.567 D/VoldConnector( 3646): RCV <- {651 public:179_65 8}

12-15 12:22:09.568 D/VoldConnector( 3646): RCV <- {659 public:179_65}

12-15 12:22:09.568 D/VoldConnector( 3646): RCV <- {649 disk:179_64}

12-15 12:22:09.569 D/VoldConnector( 3646): RCV <- {640 disk:179_96 5}

12-15 12:22:09.570 D/VoldConnector( 3646): RCV <- {641 disk:179_96 63864569856}

12-15 12:22:09.570 D/VoldConnector( 3646): RCV <- {642 disk:179_96 SanDisk}

12-15 12:22:09.571 D/VoldConnector( 3646): RCV <- {644 disk:179_96 /sys//devices/soc.0/f98a4900.sdhci/mmc_host/mmc1/mmc1:e624/block/mmcblk1}

12-15 12:22:09.571 V/vold ( 379): /system/bin/sgdisk

12-15 12:22:09.571 V/vold ( 379): --android-dump

12-15 12:22:09.571 V/vold ( 379): /dev/block/vold/disk:179_96

12-15 12:22:09.578 D/MountService( 3646): Volume public:179_65 broadcasting unmounted to UserHandle{0}

12-15 12:22:09.579 D/MountService( 3646): Volume public:179_65 broadcasting bad_removal to UserHandle{0}

12-15 12:22:09.889 I/ActivityManager( 3646): Start proc 15361:de.amazon.mShop.android/u0a98 for broadcast de.amazon.mShop.android/com.amazon.clouddrive.library.device.receivers.ExternalMediaChangeReceiverProxy

12-15 12:22:09.897 W/ActivityManager( 3646): Activity pause timeout for ActivityRecord{dc73b5a u0 com.google.android.music/com.android.music.activitymanagement.TopLevelActivity t462}

12-15 12:22:10.032 V/vold ( 379): DISK mbr

12-15 12:22:10.032 V/vold ( 379):

12-15 12:22:10.032 V/vold ( 379): PART 1 7

12-15 12:22:10.032 V/vold ( 379):

12-15 12:22:10.034 D/VoldConnector( 3646): RCV <- {650 public:179_97 0 "disk:179_96" ""}

12-15 12:22:10.035 D/VoldConnector( 3646): RCV <- {654 public:179_97 sdcard1}

12-15 12:22:10.035 D/VoldConnector( 3646): SND -> {10 volume mount public:179_97 2 0}

12-15 12:22:10.035 D/VoldConnector( 3646): RCV <- {651 public:179_97 0}

12-15 12:22:10.036 V/vold ( 379): /system/bin/blkid

12-15 12:22:10.036 V/vold ( 379): -c

12-15 12:22:10.036 V/vold ( 379): /dev/null

12-15 12:22:10.036 D/VoldConnector( 3646): RCV <- {643 disk:179_96}

12-15 12:22:10.036 V/vold ( 379): -s

12-15 12:22:10.036 V/vold ( 379): TYPE

12-15 12:22:10.036 V/vold ( 379): -s

12-15 12:22:10.036 V/vold ( 379): UUID

12-15 12:22:10.036 V/vold ( 379): -s

12-15 12:22:10.036 V/vold ( 379): LABEL

12-15 12:22:10.036 V/vold ( 379): /dev/block/vold/public:179_97

12-15 12:22:10.037 D/VoldConnector( 3646): RCV <- {651 public:179_97 1}

12-15 12:22:10.085 V/vold ( 379): /dev/block/vold/public:179_97: UUID="D92E-4FD5" LABEL="" TYPE="exfat"

12-15 12:22:10.085 V/vold ( 379):

12-15 12:22:10.087 V/vold ( 379): /system/bin/fsck.exfat

12-15 12:22:10.087 V/vold ( 379): /dev/block/vold/public:179_97

12-15 12:22:10.089 D/VoldConnector( 3646): RCV <- {652 public:179_97 exfat}

12-15 12:22:10.089 D/VoldConnector( 3646): RCV <- {653 public:179_97 D92E-4FD5}

12-15 12:22:10.090 D/VoldConnector( 3646): RCV <- {654 public:179_97 sdcard1}

12-15 12:22:10.090 D/VoldConnector( 3646): RCV <- {656 public:179_97 /mnt/media_rw/D92E-4FD5}

12-15 12:22:10.091 D/VoldConnector( 3646): RCV <- {655 public:179_97 /storage/D92E-4FD5}

12-15 12:22:10.107 D/VoldConnector( 3646): SND -> {11 volume mkdirs /storage/D92E-4FD5/Android/data/com.google.android.music/files/}

12-15 12:22:10.699 I/ActivityManager( 3646): Start proc 15449:com.amazon.storm.lightning.client.aosp/u0a136 for content provider com.amazon.storm.lightning.client.aosp/com.amazon.storm.lightning.client.cloud.MAPHarrisonInformationProvider

12-15 12:22:11.032 D/VoldConnector( 3646): SND -> {12 volume mkdirs /storage/D92E-4FD5/Android/data/com.touchtype.swiftkey/files/}

12-15 12:22:11.379 W/WindowManager( 3646): App freeze timeout expired.

12-15 12:22:11.866 V/vold ( 379): /system/bin/mount.exfat

12-15 12:22:11.866 V/vold ( 379): -o

12-15 12:22:11.867 V/vold ( 379): noatime,nodev,nosuid,dirsync,uid=1023,gid=1023,fmask=7,dmask=7,noexec,rw

12-15 12:22:11.867 V/vold ( 379): /dev/block/vold/public:179_97

12-15 12:22:11.867 V/vold ( 379): /mnt/media_rw/D92E-4FD5

12-15 12:22:11.981 V/vold ( 379): Waiting for FUSE to spin up...

12-15 12:22:12.032 D/VoldConnector( 3646): RCV <- {651 public:179_97 2}

12-15 12:22:12.034 D/VoldConnector( 3646): RCV <- {200 10 Command succeeded}

12-15 12:22:12.035 E/VoldConnector( 3646): NDC Command {10 volume mount public:179_97 2 0} took too long (2000ms)

12-15 12:22:12.037 D/MountService( 3646): Volume public:179_97 broadcasting checking to UserHandle{0}

12-15 12:22:12.045 D/MountService( 3646): Volume public:179_97 broadcasting mounted to UserHandle{0}

12-15 12:22:12.061 D/VoldConnector( 3646): RCV <- {200 11 Command succeeded}

12-15 12:22:12.062 E/VoldConnector( 3646): NDC Command {11 volume mkdirs /storage/D92E-4FD5/Android/data/com.google.android.music/files/} took too long (1955ms)

12-15 12:22:12.067 D/VoldConnector( 3646): RCV <- {200 12 Command succeeded}

12-15 12:22:12.068 E/VoldConnector( 3646): NDC Command {12 volume mkdirs /storage/D92E-4FD5/Android/data/com.touchtype.swiftkey/files/} took too long (1036ms)

12-15 12:22:12.086 D/VoldConnector( 3646): SND -> {13 volume mkdirs /storage/D92E-4FD5/Android/data/com.google.android.music/files/}

12-15 12:22:12.089 D/VoldConnector( 3646): RCV <- {200 13 Command succeeded}