linux-kernel - Re: [PATCH 0/7] NULL pointer deref fix for stm32-dma

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Date:   Tue, 16 Oct 2018 18:11:29 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     "Joel Fernandes (Google)" <joel@...lfernandes.org>
Cc:     stable@...r.kernel.org, Alexandre Torgue <alexandre.torgue@...com>,
        Dan Williams <dan.j.williams@...el.com>,
        dmaengine@...r.kernel.org,
        "moderated list:ARM/STM32 ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel@...r.kernel.org,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Vinod Koul <vinod.koul@...el.com>
Subject: Re: [PATCH 0/7] NULL pointer deref fix for stm32-dma

On Mon, Oct 08, 2018 at 10:47:45PM -0700, Joel Fernandes (Google) wrote:
> Hi Greg,
> 
> While looking at android-4.14, I found a NULL pointer deref with
> stm32-dma driver using Coccicheck errors. I found that upstream had a
> bunch of patches on stm32-dma that have fixed this and other issues, I
> applied these patches cleanly onto Android 4.14. I believe these should
> goto stable and flow into Android 4.14 from there, but I haven't tested
> this since I have no hardware to do so.
> 
> Atleast I can say that the coccicheck error below goes away when running:
> make coccicheck MODE=report
> ./drivers/dma/stm32-dma.c:567:18-24: ERROR: chan -> desc is NULL but dereferenced.
> 
> Anyway, please consider this series for 4.14 stable, I have CC'd the
> author and others, thanks.
> 
> Pierre Yves MORDRET (7):
>   dmaengine: stm32-dma: threshold manages with bitfield feature
>   dmaengine: stm32-dma: fix incomplete configuration in cyclic mode
>   dmaengine: stm32-dma: fix typo and reported checkpatch warnings
>   dmaengine: stm32-dma: Improve memory burst management
>   dmaengine: stm32-dma: fix DMA IRQ status handling
>   dmaengine: stm32-dma: fix max items per transfer
>   dmaengine: stm32-dma: properly mask irq bits
> 
>  drivers/dma/stm32-dma.c | 287 +++++++++++++++++++++++++++++++++-------
>  1 file changed, 240 insertions(+), 47 deletions(-)


I need git commit ids for all of these for what the patch in mainline
is.

Can you fix that up and resend them?

thanks,

greg k-h