linux-kernel - Re: BUG: KFENCE: memory corruption in usb_get_device

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Date:   Wed, 17 Mar 2021 11:04:08 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     open list <linux-kernel@...r.kernel.org>,
        linux-usb@...r.kernel.org, lkft-triage@...ts.linaro.org,
        Alan Stern <stern@...land.harvard.edu>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Jason Yan <yanaijie@...wei.com>,
        "Ahmed S. Darwish" <a.darwish@...utronix.de>,
        Oliver Neukum <oneukum@...e.com>,
        Eugeniu Rosca <erosca@...adit-jv.com>,
        Arnd Bergmann <arnd@...db.de>,
        Anders Roxell <anders.roxell@...aro.org>
Subject: Re: BUG: KFENCE: memory corruption in usb_get_device_descriptor

On Wed, Mar 17, 2021 at 02:28:40PM +0530, Naresh Kamboju wrote:
> While booting Linux mainline master 5.12.0-rc2 and 5.12.0-rc3 on arm64
> Hikey device the following KFENCE bug was found.
> 
> Recently, we have enabled CONFIG_KFENCE=y and started seeing this crash.
> kernel BUG log:

What USB traffic are you having here?

And has this ever not triggered?

thanks,

greg k-h