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Repeated USB disconnect/reconnect causes kernel crash #194

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duerig opened this issue Jun 7, 2015 · 2 comments
Open

Repeated USB disconnect/reconnect causes kernel crash #194

duerig opened this issue Jun 7, 2015 · 2 comments

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@duerig
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duerig commented Jun 7, 2015

Using SpreadPi on a Raspberry Pi 2, repeatedly connecting and reconnecting a camera via USB (powering it on and off) will cause a null pointer exception in the kernel and crash the Pi.
@jbaiter
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jbaiter commented Jun 7, 2015

Can you try and see if this is related to chdkptp/spreads at all? That is, does merely reconnecting the USB devices repeatedly with no application using them also cause a crash?
I've seen messages about device resets in my kernel log when attaching CHDK cameras, maybe these are related? Can you see something in your log?
I noticed that when these errors happened on my machines (Laptop, Desktop and RPi 1 and 2) the device ID would be incremented. This is just a suspicion, but maybe at some point that value overflows and a crash is the result...

@markvdb
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markvdb commented Jun 7, 2015 via email

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@jbaiter @markvdb @duerig