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Date:   Fri, 23 Dec 2022 16:12:45 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Krishna Kurapati PSSNV <quic_kriskura@quicinc.com>
Cc:     linux-usb@vger.kernel.org
Subject: Re: SMMU Fault after setting RUN_STOP during gadget_pullup
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On Fri, Dec 23, 2022 at 08:34:08PM +0530, Krishna Kurapati PSSNV wrote:
> 
> 
> On 12/23/2022 7:56 PM, Greg KH wrote:
> > On Fri, Dec 23, 2022 at 07:26:49PM +0530, Krishna Kurapati PSSNV wrote:
> > > Hi all,
> > > 
> > > I am facing one SMMU fault with FAR=0x00 on current targets running on 5.10
> > > and 5.15 with following signature:
> > 
> > What about 6.1?
> > 
> > thanks,
> > 
> > greg k-h
> 
> Hi Greg,
> 
>  Current mobile targets are running on 5.10 and 5.15 only till now. No
> target on 6.1 hasn't come up completely yet. So not sure if this issue is
> there on 6.1.
> 
>  I can try putting 6.1 on a minimal busybox ramdisk image on the mobile
> target and see if the issue comes up but seeing that the issue is random and
> seen only after long duration, I might take some time to get back with the
> results.
> 
> In the meantime, I would be happy to try out any ideas coming up from
> community in the meantime on current 5.15 build.

We can't do much about older kernels, as you know, sorry.  If you can
reproduce the issue on a modern kernel (i.e. 6.1), then we can look into
it.  If you can't, then 'git bisect' is your friend :)

good luck!

greg k-h