linux-kernel - Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000098

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Message-ID: <20131129222235.GJ21755@mtj.dyndns.org>
Date:	Fri, 29 Nov 2013 17:22:35 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Yuanhan Liu <yuanhan.liu@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org, Fengguang Wu <fengguang.wu@...el.com>
Subject: Re: BUG: unable to handle kernel NULL pointer dereference at
 0000000000000098

On Tue, Nov 26, 2013 at 05:21:52PM +0800, Yuanhan Liu wrote:
> Greetings,
> 
> I got the below dmesg and the first bad commit is
> 
> commit 98de48a0e011f2ef497a0f0c40b79169198cf797
> Author:     Tejun Heo <tj@...nel.org>
> AuthorDate: Sat Nov 23 18:01:54 2013 -0500
> Commit:     Tejun Heo <tj@...nel.org>
> CommitDate: Sat Nov 23 18:01:54 2013 -0500
> 
>     sysfs, kernfs: make sysfs_dirent definition public
...
> [    0.372911] BUG: unable to handle kernel NULL pointer dereference at 0000000000000098
> [    0.374091] IP: [<ffffffff812fdbbb>] kobject_add_internal+0x1cb/0x6c0

This was from the patch incorrectly replacing dummy noop
implementation for !CONFIG_SYSFS with the actual implementation.
Updated patches posted.

Thank you very much!

-- 
tejun
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