linux-kernel - Re: 32-bit Amlogic (ARM) SoC: kernel BUG in kfree()

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Message-ID: <8cb108ff-7a72-6db4-660d-33880fcee08a@amlogic.com>
Date:   Wed, 10 Apr 2019 19:08:17 +0800
From:   Liang Yang <liang.yang@...ogic.com>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>
CC:     Matthew Wilcox <willy@...radead.org>, <mhocko@...e.com>,
        <linux@...linux.org.uk>, <linux-kernel@...r.kernel.org>,
        <rppt@...ux.ibm.com>, <linux-mm@...ck.org>,
        <linux-mtd@...ts.infradead.org>,
        <linux-amlogic@...ts.infradead.org>, <akpm@...ux-foundation.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: 32-bit Amlogic (ARM) SoC: kernel BUG in kfree()

Hi Martin,

On 2019/4/5 12:30, Martin Blumenstingl wrote:
> Hi Liang,
> 
> On Fri, Mar 29, 2019 at 8:44 AM Liang Yang <liang.yang@...ogic.com> wrote:
>>
>> Hi Martin,
>>
>> On 2019/3/29 2:03, Martin Blumenstingl wrote:
>>> Hi Liang,
>> [......]
>>>> I don't think it is caused by a different NAND type, but i have followed
>>>> the some test on my GXL platform. we can see the result from the
>>>> attachment. By the way, i don't find any information about this on meson
>>>> NFC datasheet, so i will ask our VLSI.
>>>> Martin, May you reproduce it with the new patch on meson8b platform ? I
>>>> need a more clear and easier compared log like gxl.txt. Thanks.
>>> your gxl.txt is great, finally I can also compare my own results with
>>> something that works for you!
>>> in my results (see attachment) the "DATA_IN  [256 B, force 8-bit]"
>>> instructions result in a different info buffer output.
>>> does this make any sense to you?
>>>
>> I have asked our VLSI designer for explanation or simulation result by
>> an e-mail. Thanks.
> do you have any update on this?
> Sorry. I haven't got reply from VLSI designer yet. We tried to improve 
priority yesterday, but i still can't estimate the time. There is no 
document or change list showing the difference between m8/b and gxl/axg 
serial chips. Now it seems that we can't use command NFC_CMD_N2M on nand 
initialization for m8/b chips and use *read byte from NFC fifo register* 
instead.
> 
> Martin
> 
> .
>