Re: [Bisected] [Bug #13821] Replugging USB serial converter uses new device node

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Alan:

I just tried testing this under 2.6.31-rc4 plus
gregkh-all-2.6.31-rc4.patch, and the results were pretty nasty.  All I
did was plug in my pl2303-based USB serial device and type "cat
/dev/ttyUSB0".

In serial_open(), the call to tty_port_block_til_ready() returned
-512, whatever that means.  The error path at the end of serial_open()
then failed because it tried to release some mutexes that had already
been released.  Okay, I fixed that, and then tty_open() died trying to
access deallocated memory.

Do you have any idea what's going on or should I look more closely?

Alan Stern

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