linux-kernel - BUG: character device crashing after turning off device on usbserial

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Message-ID: <1283353294.19680.3.camel@peto-laptop>
Date:	Wed, 01 Sep 2010 17:01:34 +0200
From:	Peter Júnoš <petoju@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: BUG: character device crashing after turning off device on
 usbserial

Hello,
I would like to report a bug stated in $SUBJ; important parts from dmesg
and ver_linux are enclosed. If you are not correct recipient, send me,
please, emails of correct recipients.

Reproducible: sometimes

Steps to reproduce:
1.) Connect usbserial device via USB.
2.) Turn it on.
3.) Send something to this USB.
4.) Turn it off.
5.) Read your dmesg & note that device is not responding anymore.

Addional information:
-device connected via USB was AOiP calys 50, usbserial build-in, more
information is enclosed in dmesg_on_connect
-in step 3 I was learning about Linux serial programming and maybe I did
something wrong - wrong data written to port, incorrect flags set, data
could be send/received only partially. Everything was run as regular
user (no root, no kernel modules)
-more information can be requested via email


Peter Júnoš
-- 
"Verba docent, exempla trahunt."


View attachment "dmesg" of type "text/plain" (7762 bytes)

View attachment "dmesg_on_connect" of type "text/plain" (724 bytes)

View attachment "ver_linux" of type "text/plain" (1115 bytes)