linux-kernel - Re: [BUG] re-modprobe a nand controller driver module will cause system crash.

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Date:	Thu, 23 Oct 2008 09:06:21 +0800
From:	"Bryan Wu" <cooloney@...nel.org>
To:	"Mike Frysinger" <vapier.adi@...il.com>
Cc:	dwmw2@...radead.org, linux-mtd@...ts.infradead.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [BUG] re-modprobe a nand controller driver module will cause system crash.

On Wed, Oct 22, 2008 at 10:59 PM, Mike Frysinger <vapier.adi@...il.com> wrote:
> On Tue, Oct 21, 2008 at 23:24, Bryan Wu wrote:
>> Did anyone meet this issue before?
>
> actually i think we can see the same issue with the m25p80 driver ?
> if i build it as a module and load/unload it, it crashes with same
> name errors ...
>

Right, this is a common bug for mtd core.

-Bryan

> root:/> rmmod m25p80
> root:/> modprobe m25p80
> m25p80 spi0.2: w25x10 (128 Kbytes)
> Creating 3 MTD partitions on "m25p80":
> 0x00000000-0x00040000 : "bootloader(spi)"
> mtd: partition "bootloader(spi)" extends beyond the end of device
> "m25p80" -- size truncated to 0x20000
> kobject_add_internal failed for 31:0 with -EEXIST, don't try to
> register things with the same name in the same directory.
> <crash message>
> -mike
>
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