Comprehensive Bug Report and System Analysis
To Whom It May Concern,
I am writing to report a series of critical and recurring software issues with my Mekede M400 car radio. I have been experiencing frequent system crashes and application failures, which make the device unreliable and frustrating to use.
I have collected and analyzed system logs and crash reports from the device. The analysis reveals that the problems are not isolated to a single app but are deeply rooted in the system's core software (firmware). The issues can be categorized into two major areas:
- Critical Kernel Crashes (System-Level Failures)
The most severe issue is the frequent occurrence of kernel crashes. A kernel crash is a fatal error at the lowest level of the operating system. When it happens, the entire system becomes unstable and automatically reboots. This is a critical flaw and is not caused by user error.
The log files from the minidump directory clearly confirm these crashes:
dump_report.txt (from minidump1): This report indicates a kernel crash related to file system operations, specifically a Fatal exception during a vfs_read or do_page_fault process.
dump_report.txt (from minidump2): The device experienced another kernel_crash, this time during file system write operations (ext4_writepages). This suggests a significant instability in the storage management or file system driver.
dump_report.txt (from minidump3): Another crash occurred during file I/O operations (vfs_open), indicating a problem with accessing system files or directories.
dump_report.txt (from minidump4): This crash log points to a failure within the graphics processing unit's (GPU) kernel driver (pvrsrvkm), specifically during memory cleanup (_UnrefAndMaybeDestroy). This suggests a fundamental flaw in the display or graphics drivers.
- Application-Level Failures
In addition to system crashes, core applications on the device, particularly the multimedia player (com.wow.fyt7862.duduos_media), are highly unstable. Multiple crash logs show the same type of programming error: a java.util.ConcurrentModificationException.
DuduMedia_1756689388406.txt: This log shows the exception occurring when the application tries to modify a list (ArrayList) while simultaneously iterating over it.
DuduMedia_1757592986528.txt: A similar error is logged, indicating the same concurrent modification issue during a sorting operation (java.util.ArrayList.sort).
These application errors are not a coincidence; they are symptoms of poor coding practices and lack of thread synchronization within the firmware.
Conclusion and Request
The collected logs provide undeniable evidence that the software on the Mekede M400 radio is unstable and contains critical bugs at both the application and system levels. The device is not functioning as intended and is prone to frequent, unprovoked crashes.
I kindly request that you escalate these findings to your development team and prioritize a firmware update that addresses and resolves these issues. This is not a hardware problem; it is a software problem that can only be fixed with a proper, stable firmware release.
I am confident that your technical team can use these reports to identify the root causes and provide a working solution in a timely manner.
Thank you for your prompt attention to this matter.
