Dear Google,

We need a help on vendor component does not release after the mediaserver terminated by the vold process.

Reproduce Information

Android Source: android-13.0.0_r83

platform/frameworks/av: revision 95be9bad234d69f4a8ded5ee72b60315b1353098

platform/system/vold: revision cff5efa2106c322f6fb674b38c2fbdfff839a467

Device: Thumb Drive: SanDisk Extreme 3.0 32GB

Others: A media player app with implementing Vendor components.

Reproduction Steps

Plugging and unplugging the thumb drive with containing a media.

plug-in un-plug plug-in | ----------5 secs -------|--------- 3 secs -------|

Media: AVC 30fps HD(1280 x720), AAC 44.1Khz 128kbps, in MP4

Problem Description

While playing media content from a thumb drive, it occasionally fails to call the HIDL Component::release() function after the mediaserver process is killed by the vold process, which occurs after unplugging the thumb drive. It appears that this issue also affects the vendor component, which implements SimpleC2Component and does not perform the onRelease() function.

Expected Result

When the vold process kills the mediaserver by unplugging the thumb drive, the vendor component’s onRelease() function should be called properly for the component destruction.

Actual Result

The vold process kills the mediaserver process; however, the Codec2-Component@1.2 does not do release(), neither vendor component onRelease() even after a new component is created. We attached a snippet of the log.

Issues to Address

• Our vendor component is implemented through HIDL@1.2.
• Although this issue is rare, the failure to gracefully destruct components makes a problem of when to know the destructing vendor component.
• We are aware of the issue concerning invalidating BlockPool and have excluded that case from this report.

Is there any way to figure out this problem? or any suggestion would be great.

Thanks

Best regards