From: Greg KH <gregkh@linuxfoundation.org>
To: Johan Hovold <jhovold@gmail.com>
Cc: Chris Ruehl <chris.ruehl@gtsys.com.hk>,
Alan Stern <stern@rowland.harvard.edu>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
linux-usb@vger.kernel.org, linux-serial@vger.kernel.org,
Alan Cox <alan@linux.intel.com>,
stable@vger.kernel.org
Subject: Re: [PATCH] USB: serial: fix null-pointer dereferences on disconnect
Date: Wed, 13 Feb 2013 08:41:30 -0800 [thread overview]
Message-ID: <20130213164130.GA8371@kroah.com> (raw)
In-Reply-To: <1360765731-23164-1-git-send-email-jhovold@gmail.com>
On Wed, Feb 13, 2013 at 03:28:51PM +0100, Johan Hovold wrote:
> Make sure serial-driver dtr_rts is called with disc_mutex held after
> checking the disconnected flag.
>
> Due to a bug in the tty layer, dtr_rts may get called after a device has
> been disconnected and the tty-device unregistered. Some drivers have had
> individual checks for disconnect to make sure the disconnected interface
> was not accessed, but this should really be handled in usb-serial core
> (at least until the long-standing tty-bug has been fixed).
>
> Note that the problem has been made more acute with commit 0998d0631001
> ("device-core: Ensure drvdata = NULL when no driver is bound") as the
> port data is now also NULL when dtr_rts is called resulting in further
> oopses.
>
> Reported-by: Chris Ruehl <chris.ruehl@gtsys.com.hk>
> Cc: stable@vger.kernel.org
> ---
Any reason you didn't sign-off on this patch?
I can't really apply it without that :(
next prev parent reply other threads:[~2013-02-13 16:41 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <510B2C09.7020700@gtsys.com.hk>
2013-02-13 14:25 ` USB Ooops PL2303 when unplug while use (linux v3.7.3) Johan Hovold
2013-02-13 14:28 ` [PATCH] USB: serial: fix null-pointer dereferences on disconnect Johan Hovold
[not found] ` <1360765731-23164-1-git-send-email-jhovold-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-02-13 14:34 ` Felipe Balbi
2013-02-13 14:48 ` Johan Hovold
2013-02-13 16:41 ` Greg KH [this message]
2013-02-13 16:53 ` [PATCH resend] " Johan Hovold
2013-02-13 17:27 ` [RFC 0/4] tty: port hangup and close issues Johan Hovold
2013-02-13 17:27 ` [RFC 1/4] tty: clean up port shutdown Johan Hovold
2013-02-13 17:27 ` [RFC 2/4] tty: fix DTR/RTS not being dropped on hang up Johan Hovold
[not found] ` <1360776446-31371-3-git-send-email-jhovold-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-02-13 18:06 ` [RFC v2 " Johan Hovold
2013-02-13 19:32 ` [RFC " Peter Hurley
[not found] ` <1360783973.8499.48.camel-AsKIXgLx6sE@public.gmane.org>
2013-02-14 1:11 ` Peter Hurley
[not found] ` <1360804273.3385.23.camel-AsKIXgLx6sE@public.gmane.org>
2013-02-14 9:04 ` Johan Hovold
2013-02-13 17:27 ` [RFC 3/4] tty: clean up port drain-delay handling Johan Hovold
2013-02-14 1:39 ` Peter Hurley
2013-02-14 9:12 ` Johan Hovold
2013-02-13 17:27 ` [RFC 4/4] tty: fix close of uninitialised ports Johan Hovold
2013-02-13 17:36 ` [RFC 0/4] tty: port hangup and close issues Alan Cox
[not found] ` <20130213173630.63e29b47-+KEw/ACL1GZE/aiTQr5FLb0Ud+EcFu5g@public.gmane.org>
2013-02-13 18:05 ` Johan Hovold
[not found] ` <1360776446-31371-1-git-send-email-jhovold-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-02-20 16:02 ` [PATCH 0/4] TTY: port hangup and close fixes Johan Hovold
2013-02-20 16:02 ` [PATCH 1/4] TTY: clean up port shutdown Johan Hovold
2013-02-20 16:02 ` [PATCH 2/4] TTY: fix DTR not being dropped on hang up Johan Hovold
2013-02-23 14:18 ` Peter Hurley
2013-02-26 10:59 ` Johan Hovold
2013-02-20 16:02 ` [PATCH 3/4] TTY: clean up port drain-delay handling Johan Hovold
[not found] ` <1361376172-31860-1-git-send-email-jhovold-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-02-20 16:02 ` [PATCH 4/4] TTY: fix close of uninitialised ports Johan Hovold
2013-02-21 1:53 ` [PATCH 0/4] TTY: port hangup and close fixes Peter Hurley
2013-02-13 18:40 ` USB Ooops PL2303 when unplug while use (linux v3.7.3) Peter Hurley
[not found] ` <1360780808.8499.43.camel-AsKIXgLx6sE@public.gmane.org>
2013-02-14 17:43 ` Johan Hovold
2013-02-22 10:03 ` USB: serial: port lifetimes (was: Re: USB Ooops PL2303 when unplug while use (linux v3.7.3)) Johan Hovold
2013-02-22 15:17 ` Alan Stern
2013-02-22 17:11 ` Johan Hovold
2013-02-22 17:35 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1302221218270.1365-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2013-02-22 17:44 ` Greg KH
2013-02-22 18:21 ` Peter Hurley
[not found] ` <1361557284.5752.25.camel-AsKIXgLx6sE@public.gmane.org>
2013-02-22 18:57 ` Alan Stern
2013-02-23 16:05 ` Johan Hovold
2013-02-23 16:23 ` Johan Hovold
2013-02-23 16:34 ` Johan Hovold
2013-02-23 17:31 ` Alan Stern
2013-02-23 18:12 ` Johan Hovold
2013-02-23 21:20 ` Alan Stern
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