linux-kernel - Re: [PATCH v3] mtd: Fix gluebi NULL pointer dereference caused by ftl notifier

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Message-ID: <174426702.13324.1698438610904.JavaMail.zimbra@nod.at>
Date:   Fri, 27 Oct 2023 22:30:10 +0200 (CEST)
From:   Richard Weinberger <richard@....at>
To:     Miquel Raynal <miquel.raynal@...tlin.com>
Cc:     ZhaoLong Wang <wangzhaolong1@...wei.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Artem Bityutskiy <Artem.Bityutskiy@...ia.com>,
        dpervushin <dpervushin@...eddedalley.com>,
        linux-mtd <linux-mtd@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        chengzhihao1 <chengzhihao1@...wei.com>,
        yi zhang <yi.zhang@...wei.com>,
        yangerkun <yangerkun@...wei.com>
Subject: Re: [PATCH v3] mtd: Fix gluebi NULL pointer dereference caused by
 ftl notifier

----- Ursprüngliche Mail -----
> Von: "Miquel Raynal" <miquel.raynal@...tlin.com>
>> Detailed reproduction information available at the link[1],
>> 
>> The solution for the gluebi module is to run jffs2 on the UBI
>> volume without considering working with ftl or mtdblock.[2].
> 
> I am sorry but ftl, gluebi, mtdblock, jffs2 and ubi in the same report
> seem a little bit fuzzy. Are you sure about this sentence?

ZhaoLong Wang found an interesting bug while stacking various MTD components.
I suggested to just deny mtdblock on top of gluebi to avoid the whole
problem class instead of adding more duct tape.

Thanks,
//richard

The issue reminds me of one of my favorite Monty Python sketches, https://www.youtube.com/watch?v=LFrdqQZ8FFc
;-)