linux-kernel - Re: ubiblock: null pointer dereference using scatterlist in work

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Message-ID: <20230810154300.GA28000@lst.de>
Date:   Thu, 10 Aug 2023 17:43:00 +0200
From:   hch <hch@....de>
To:     Richard Weinberger <richard@....at>
Cc:     hch <hch@....de>, Stephan Wurm <stephan.wurm@...berle.de>,
        linux-block <linux-block@...r.kernel.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-mtd <linux-mtd@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Johannes Eigner <johannes.eigner@...berle.de>
Subject: Re: ubiblock: null pointer dereference using scatterlist in
 work_queue

On Thu, Aug 10, 2023 at 12:43:59AM +0200, Richard Weinberger wrote:
> > deprecated kmap_atomic to kmap_local first you can sleep and don't
> > need bounce buffers.
> 
> Yep, for upstream kmap_local will do the trick, but I need also something
> for the stable trees.
> Anyway, time to get some sleep.

Maybe just copy and paste it with the kmap_local change and then do
another patch (series) to unify them again.  IIRC we also have a copy
and paste version in an mmc driver somewhere.