Subject=Re:%20Re%3A%20UBI%20leb_write_unlock%20NULL%20pointer%20Oops%20%28continuation%29&In-Reply-To=%3C20140205201223.GA25295%40gmail.com%3E

[Tomasz Lach]

Thanks Richard!
It works!

Tomek

----- Original Message -----
From: "Richard Weinberger" <richard.weinberger at gmail.com>
To: "Tomasz Lach" <tomasz.lach at fideltronik.com>
Cc: "linux-mtd" <linux-mtd at lists.infradead.org>
Sent: Thursday, March 3, 2016 10:56:33 AM
Subject: Re: Subject=Re:%20Re%3A%20UBI%20leb_write_unlock%20NULL%20pointer%20Oops%20%28continuation%29&In-Reply-To=%3C20140205201223.GA25295%40gmail.com%3E

On Thu, Mar 3, 2016 at 10:04 AM, Tomasz Lach 
<tomasz.lach at fideltronik.com> wrote: 
> 
> Hello everybody! 
> 
> I have the same error (OOPS in leb_write_unlock). 
> I run kernel 3.6.9 on Atmel SAMA5D31 cpu, compiled with buildroot gcc 4.6.3 
> 
> I can reproduce error quite easy - writing lot of inserts into sqllite table from tcl. 
> 
> I've found that problem is with mutex le->mutex.wait_list.next -> it is NULL 
> When I turn on mutex debugging - error disappears... 
> I can't find when .next is NULL... 

I think your kernel misses this stable patch: 
commit 2928f0d0c5ebd6c9605c0d98207a44376387c298 
Author: Adam Thomas <adamthomas1111 at gmail.com> 
Date: Sat Feb 2 22:32:31 2013 +0000 

UBIFS: fix use of freed ubifs_orphan objects 

-- 
Thanks, 
//richard