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From: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
To: Maninder Singh <maninder1.s@samsung.com>
Cc: "peter@hurleysoftware.com" <peter@hurleysoftware.com>,
	"jslaby@suse.com" <jslaby@suse.com>,
	"keun-o.park@darkmatter.ae" <keun-o.park@darkmatter.ae>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	AMIT SAHRAWAT <a.sahrawat@samsung.com>,
	Vaneet Narang <v.narang@samsung.com>,
	Rohit Thapliyal <r.thapliyal@samsung.com>,
	Ayush Mittal <ayush.m@samsung.com>
Subject: Re: race between flush_to_ldisc and pty_cleanup
Date: Fri, 1 Feb 2019 15:21:09 +0100	[thread overview]
Message-ID: <20190201142109.GA3211@kroah.com> (raw)
In-Reply-To: <20190201133326epcms5p506416bc4ae22f600ee705f146ca1a599@epcms5p5>

On Fri, Feb 01, 2019 at 07:03:26PM +0530, Maninder Singh wrote:
> Hi,
> 
> 
> There is some race condition between tty_port_put and flush_to_ldisc
> which lead to use after free case:
> (Kernel 4.1)

Wait, 4.1 is _REALLY_ old and obsolete and broken in numerous known
places.

Can you duplicate this on 4.20, or better yet, 5.0-rc4?  Lots of tty and
ldisc fixes has gone into the tree in the past 3 1/2 years since that
kernel was released.

thanks,

greg k-h

  reply	other threads:[~2019-02-01 14:21 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20190201133326epcms5p506416bc4ae22f600ee705f146ca1a599@epcms5p5>
2019-02-01 13:33 ` race between flush_to_ldisc and pty_cleanup Maninder Singh
2019-02-01 14:21   ` gregkh [this message]
2019-02-01 14:26   ` gregkh
2019-02-01 14:37     ` Maninder Singh
2019-02-03  5:54       ` Keun-O Park

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