linux-kernel - Re: [ANNOUNCE] 2.6.31-rc4-rt1 (problem with CONFIG_SYSFS_DEPRECATED

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Date:	Thu, 06 Aug 2009 12:16:15 +0530
From:	gowrishankar <gowrishankar.m@...ux.vnet.ibm.com>
To:	Clark Williams <williams@...hat.com>
CC:	gowrishankar.m@...ux.vnet.ibm.com,
	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	rt-users <linux-rt-users@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Steven Rostedt <rostedt@...dmis.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Carsten Emde <ce@...g.ch>,
	Frank Rowand <frank.rowand@...sony.com>,
	Robin Gareus <robin@...eus.org>,
	Gregory Haskins <ghaskins@...ell.com>,
	Philippe Reynes <philippe.reynes@...smpp.fr>,
	Fernando Lopez-Lezcano <nando@...ma.Stanford.EDU>,
	Will Schmidt <will_schmidt@...t.ibm.com>,
	Darren Hart <dvhltc@...ibm.com>, Jan Blunck <jblunck@...e.de>,
	Sven-Thorsten Dietrich <sdietrich@...ell.com>,
	Jon Masters <jcm@...hat.com>
Subject: Re: [ANNOUNCE] 2.6.31-rc4-rt1 (problem with CONFIG_SYSFS_DEPRECATED_V2)

Clark Williams wrote:
> On Wed, 05 Aug 2009 11:36:03 +0530
> gowrishankar <gowrishankar.m@...ux.vnet.ibm.com> wrote:
> 
>> Thomas Gleixner wrote:
>>> We are pleased to announce the next update to our new preempt-rt
>>> series.
>>>
>>>     - update to 2.6.31-rc4
>> Hi,
>> I am seeing below kernel panic on 8 way Intel and 4 way AMD blades.
>>
>> Kernel panic - not syncing: Attempted to kill init!
>> Pid: 1, comm: init Not tainted 2.6.31-rc4-rt1-autotest #1
>> Call Trace:
>>   [<ffffffff8104c887>] panic+0xc1/0x171
>>   [<ffffffff8104ec9a>] ? put_files_struct+0xc3/0xe6
>>   [<ffffffff81394313>] ? rt_write_unlock+0x1c/0x32
>>   [<ffffffff810582fd>] ? exit_ptrace+0xab/0x130
>>   [<ffffffff81394313>] ? rt_write_unlock+0x1c/0x32
>>   [<ffffffff810500af>] do_exit+0x88/0x726
>>   [<ffffffff810507d5>] do_group_exit+0x88/0xbb
>>   [<ffffffff8105082d>] sys_exit_group+0x25/0x3d
>>   [<ffffffff8100be2b>] system_call_fastpath+0x16/0x1b
>>
>> Thanks,
>> Gowri
> 
> Gowri, 
> 
> Would you post your .config so we can see what options you have enabled?
> 
Hi Clark,
Thanks for the attention. I just looked at error message before the trace I posted.

setuproot: moving /dev failed: No such file or directory
no fstab.sys, mounting internal defaults
setuproot: error mounting /proc: No such file or directory
setuproot: error mounting /sys: No such file or directory
Switching to new root and running init.
unmounting old /dev
unmounting old /proc
unmounting old /sys
switchroot: mount failed: No such file or directory

Only if I set CONFIG_SYSFS_DEPRECATED_V2=y, I could successfully boot
which I have tested with this kernel in same system.

Is it not set by default from 2.6.31 onwards ?

Thanks,
Gowri

> Clark
> 

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