On Thu, 20 Aug 2009 17:20:35 Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Thu, 20 Aug 2009, Bruno [UTF-8] Prémont wrote: > > > No, that one does not really help (well it avoids dereferencing a > > bad pointer (NULL for pl2302 or invalid for ftdi) with > > serial_do_free() after destroy_serial() but is does underflow > > module refcount (refcount ends up at 2^32-1) and lets the kernel > > stall/panic a short time later without any useful information at > > that moment (only very first line of trace ever appears) [ftdi for > > the panic/freeze]. > > More information, please. Does the problem occur with the pl2303 or > only with the ftdi? Which module's refcount underflows? What else > can you provide? The module refcount was for both. It's the pl2302/ftdi-sio module's refcount. I don't remember for sure about the panic if it also affects pl2302 or not. At least one of the panics was when running dmesg after exiting minicom. I will redo the tests this evening when I get home and report back with more details. > I don't see the same sort of thing with my pl2303 device, but maybe > I'm using a different version of minicom. > > Alan Stern Bruno -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
