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Open Source and information security mailing list archives
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Date: Wed, 3 Mar 2010 15:17:18 +0100 From: Johan Hovold <jhovold@...il.com> To: peter@...e.net Cc: Greg KH <greg@...ah.com>, linux-kernel@...r.kernel.org, Alan Cox <alan@...rguk.ukuu.org.uk>, linux-usb@...r.kernel.org Subject: Re: [BUG] usb-serial / pl2302 corrupted receive On Wed, Mar 03, 2010 at 11:47:05AM +0100, peter@...e.net wrote: > Quoting Greg KH <greg@...ah.com>: > > On Mon, Mar 01, 2010 at 07:07:00PM +0100, Peter Feuerer wrote: > >> I connected two pls2302 usb-serial converters to two different > >> usb-ports of my machine and connected them with a rs232-nullmodem > >> cable to each other. > >> > >> Terminal1: > >> cat /dev/ttyUSB1 > >> > >> Terminal2: > >> while true; do echo 123456789012345678901234567890 > /dev/ttyUSB0 ; done > > > > cat and echo are known to not work well with usb to serial devices. Can > > you duplicate this with a "real" tty program like minicom or something > > else? > > I will try to set up a test use-case which uses kermit. > > But there is a calltrace in kernel log when using cat & echo, so > something in the driver went wrong. > Thus there is a bug which can be reproduced and it should be fixed, > don't you agree? Not necessarily. The warning you attached to your first post is a false one (it has been fixed in 2.6.33) and is not directly related to the problem you describe. /Johan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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