linux-kernel - Re: [next-20130118] Analyzing a call-trace reproducible with pm_test/freezer [ X86|RCU|TTY|EXT4FS|JBD2|PM related? ]

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Message-ID: <CA+icZUUY8tJEC-NgENnZHXzoSOTJ6BFqe2NeqPM_Pdh7Tk2W4w@mail.gmail.com>
Date:	Sun, 20 Jan 2013 00:06:16 +0100
From:	Sedat Dilek <sedat.dilek@...il.com>
To:	Ilya Zykov <ilya@...x.ru>
Cc:	linux-next <linux-next@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux PM List <linux-pm@...ts.linux-foundation.org>,
	linux-serial@...r.kernel.org,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>, x86@...nel.org,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jslaby@...e.cz>, "Theodore Ts'o" <tytso@....edu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Paul McKenney <paul.mckenney@...aro.org>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Jan Kara <jack@...e.cz>,
	Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: [next-20130118] Analyzing a call-trace reproducible with
 pm_test/freezer [ X86|RCU|TTY|EXT4FS|JBD2|PM related? ]

On Sat, Jan 19, 2013 at 11:59 PM, Sedat Dilek <sedat.dilek@...il.com> wrote:
> On Sat, Jan 19, 2013 at 11:56 PM, Ilya Zykov <ilya@...x.ru> wrote:
>> On 20.01.2013 2:51, Sedat Dilek wrote:
>>> On Sat, Jan 19, 2013 at 11:43 PM, Ilya Zykov <ilya@...x.ru> wrote:
>>>> Hello!
>>>> I don't expert, but
>>>> maybe it can help.
>>>>
>>>> I test with:
>>>>   while echo mem > /sys/power/state; do sleep 2; done
>>>> in one X-terminal, in other I trying playing with keyboard.
>>>> (Without playing all right I use ext3.)
>>>
>>> Can you test with the patches listed in [1] (including two TTY patches
>>> from you!)?
>>> My base is Linux-Next (next-20130118).
>>> FYI: My Ubuntu/precise is EXT4FS-formatted.
>>>
>> Ok.
>> but not now I have 3.00 night.
>> I already use this in my 3.8.0-rc3-next-20130118-pm+.
>>  tty: Correct tty buffer flush.
>>
>
> The TTY patches are not enough, you need in addition the JBD2 fix [1].
>

Attached is a testcase script which helped here to hit the issue!

- Sedat -

> - Sedat -
>
> [1] http://patchwork.ozlabs.org/patch/207237/
>
>>

Download attachment "run_pm-test.sh" of type "application/x-sh" (779 bytes)