linux-kernel - Re: [PATCH] tty: Fix SIGTTOU not sent with tcflush()

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20130926002413.GA17587@kroah.com>
Date:	Wed, 25 Sep 2013 17:24:13 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Peter Hurley <peter@...leysoftware.com>
Cc:	Jiri Slaby <jslaby@...e.cz>, Oleg Nesterov <oleg@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	codonell <codonell@...hat.com>, Eduard Benes <ebenes@...hat.com>,
	Karel Srot <ksrot@...hat.com>,
	Matt Newsome <mnewsome@...hat.com>,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH] tty: Fix SIGTTOU not sent with tcflush()

On Wed, Sep 25, 2013 at 08:13:04PM -0400, Peter Hurley wrote:
> Commit 'e7f3880cd9b98c5bf9391ae7acdec82b75403776'
>   tty: Fix recursive deadlock in tty_perform_flush()
> introduced a regression where tcflush() does not generate
> SIGTTOU for background process groups.
> 
> Make sure ioctl(TCFLSH) calls tty_check_change() when
> invoked from the line discipline.
> 
> Cc: stable@...r.kernel.org # v3.10+
> Reported-by: Oleg Nesterov <oleg@...hat.com>
> Signed-off-by: Peter Hurley <peter@...leysoftware.com>
> ---
>  drivers/tty/tty_ioctl.c | 3 +++
>  1 file changed, 3 insertions(+)

Thanks for tracking this down, I'll queue it up tomorrow.

greg k-h
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/