linux-kernel - Re: WARNING: at tty

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Message-ID: <4CE87041.9070704@oracle.com>
Date:	Sat, 20 Nov 2010 17:05:05 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
CC:	Jean Delvare <khali@...ux-fr.org>, Greg KH <gregkh@...e.de>
Subject: Re: WARNING: at tty_io.c: line 1331

[oops, first posting was too large for lkml, so instead of attachments,
I'll put the relevant files online]


On 11/20/10 12:27, Randy Dunlap wrote:
> 2.6.37-rc2-git4 on x86_64, nearly allmodconfig with a several debug/test
> options disabled and a few options changed to =y so that things work
> (like serial console).  Could there be some kernel options that are
> interfering here?
> 
> 
> Kernel config file is attached.
> 
> Reproducible by running 'modules_tester' script with the ONLY environment
> variable set to "hwmon".  I have not been able to reproduce this with other
> driver subsystems.
> 
> Today's test failed during loading/unloaded tmp421.  Previous tests have
> failed with adt7470, adm1031, and jc42.  The log of modules_tester output
> is attached. (mod-hwmon-r2g4.out)
> 
> (as root:)
> # ONLY=hwmon ./modules_tester 2>&1 | tee test.out
> 
> modules_tester just loads and unloads modules 3 times in a row. (it is
> available from http://oss.oracle.com/~rdunlap/scripts/modules_tester)
> 
> 
> This scripted test always fails (WARNING: + kernel is tainted) with:
> 
> WARNING: at /local/linsrc/linux-2.6.37-rc2-git4/drivers/tty/tty_io.c:1331 tty_reopen+0xa8/0xc5()
> 
> The full kernel log is attached as hwmon-fail-37r2g4.txt.
> 

Please see http://oss.oracle.com/~rdunlap/tty-warning/
for all of the relevant files.

-- 
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
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