linux-kernel - Re: [PATCH 08/11] usb: Add USB subsystem notifications [ver #7]

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Message-ID: <29419.1567528161@warthog.procyon.org.uk>
Date:   Tue, 03 Sep 2019 17:29:21 +0100
From:   David Howells <dhowells@...hat.com>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     dhowells@...hat.com, viro@...iv.linux.org.uk,
        Casey Schaufler <casey@...aufler-ca.com>,
        Stephen Smalley <sds@...ho.nsa.gov>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        nicolas.dichtel@...nd.com, raven@...maw.net,
        Christian Brauner <christian@...uner.io>,
        keyrings@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-api@...r.kernel.org,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 08/11] usb: Add USB subsystem notifications [ver #7]

Guenter Roeck <linux@...ck-us.net> wrote:

> > > This added call to usbdev_remove() results in a crash when running
> > > the qemu "tosa" emulation. Removing the call fixes the problem.
> > 
> > Yeah - I'm going to drop the bus notification messages for now.
> > 
> It is not the bus notification itself causing problems. It is the
> call to usbdev_remove().

Unfortunately, I don't know how to fix it and don't have much time to
investigate it right now - and it's something that can be added back later.

David