linux-kernel - Re: Re: [syzbot] INFO: rcu detected stall in tx

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Date:   Tue, 20 Apr 2021 09:48:54 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Guido Kiener <Guido.Kiener@...de-schwarz.com>
Cc:     Dmitry Vyukov <dvyukov@...gle.com>,
        syzbot <syzbot+e2eae5639e7203360018@...kaller.appspotmail.com>,
        "dpenkler@...il.com" <dpenkler@...il.com>,
        "lee.jones@...aro.org" <lee.jones@...aro.org>,
        USB list <linux-usb@...r.kernel.org>,
        "bp@...en8.de" <bp@...en8.de>,
        "dwmw@...zon.co.uk" <dwmw@...zon.co.uk>,
        "hpa@...or.com" <hpa@...or.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "luto@...nel.org" <luto@...nel.org>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "syzkaller-bugs@...glegroups.com" <syzkaller-bugs@...glegroups.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "x86@...nel.org" <x86@...nel.org>
Subject: Re: Re: [syzbot] INFO: rcu detected stall in tx

On Mon, Apr 19, 2021 at 08:56:19PM +0000, Guido Kiener wrote:
> Hi all,
> 
> The error is in usbtmc_interrupt(struct urb *urb) since five years. The status code EPROTO is not handled correctly.
> It's not a showstopper, but we should fix it and check the status code according to usbtmc_read_bulk_cb() or
> usb_skeleton.c.
> @Dave: Do you have time? Otherwise I can do it.
> @Greg: Is it urgent?

No idea, but patches for known problems are always good to get completed
as soon as possible :)

thanks,

greg k-h