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内核：OF：覆盖：警告：如果覆盖被删除，将会发生内存泄漏

tag-icon • tag-icon kernel raspberry-pi
内核：OF：覆盖：警告：如果覆盖被删除，将会发生内存泄漏

我怎样才能找到这些错误的原因？

journalctl -p 3 -b

Dec 12 15:19:22 raspberrypi kernel: OF: overlay: WARNING: memory leak will occur if overlay removed, property: /soc/i2c@7e804000/status
Dec 12 15:19:23 raspberrypi kernel: OF: overlay: WARNING: memory leak will occur if overlay removed, property: /soc/spi@7e204000/status
Dec 12 15:19:23 raspberrypi kernel: OF: overlay: WARNING: memory leak will occur if overlay removed, property: /soc/i2s@7e203000/#sound-dai-cells
Dec 12 15:19:23 raspberrypi kernel: OF: overlay: WARNING: memory leak will occur if overlay removed, property: /soc/i2s@7e203000/status
Dec 12 15:19:23 raspberrypi kernel: OF: overlay: WARNING: memory leak will occur if overlay removed, property: /soc/i2c@7e804000/status
Dec 12 15:19:23 raspberrypi kernel: OF: overlay: WARNING: memory leak will occur if overlay removed, property: /soc/sound/compatible
Dec 12 15:19:23 raspberrypi kernel: OF: overlay: WARNING: memory leak will occur if overlay removed, property: /soc/sound/seeed-voice-card,format
Dec 12 15:19:23 raspberrypi kernel: OF: overlay: WARNING: memory leak will occur if overlay removed, property: /soc/sound/seeed-voice-card,name
Dec 12 15:19:23 raspberrypi kernel: OF: overlay: WARNING: memory leak will occur if overlay removed, property: /soc/sound/status
Dec 12 15:19:23 raspberrypi kernel: OF: overlay: WARNING: memory leak will occur if overlay removed, property: /soc/sound/seeed-voice-card,bitclock-master
Dec 12 15:19:23 raspberrypi kernel: OF: overlay: WARNING: memory leak will occur if overlay removed, property: /soc/sound/seeed-voice-card,frame-master
Dec 12 15:19:23 raspberrypi kernel: OF: overlay: WARNING: memory leak will occur if overlay removed, property: /soc/sound/seeed-voice-card,channels-playback-override
Dec 12 15:19:23 raspberrypi kernel: OF: overlay: WARNING: memory leak will occur if overlay removed, property: /soc/sound/seeed-voice-card,channels-capture-override

答案1

这些是警告，不是错误，不需要修复。这是加载dtoverlays修改现有设备树属性的正常行为。

对警告的解释是这里。

根据输出，看起来您正在将一些 SPI、I2C 和声音“驱动程序”加载到内核中。常见的添加位置dtoverlays是通过/boot/config.txt文件。看看有没有

dtoverlay=

涉及上述系统的线路。它们很可能是这些警告的来源。

RPi config.txt 和 dtoverlay

或者，如果您在加载某个软件时看到这些响应，则该软件可能明确应用了 dtoverlays。如果在启动期间发生这种情况，请在看到这些警告之前直接查看日志中的条目。这些服务很可能正在加载覆盖层。

dtoverlay命令

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