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Date: Wed, 25 Sep 2013 19:56:12 +0200
From: Oleg Nesterov <oleg@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Jiri Slaby <jslaby@suse.cz>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Peter Hurley <peter@hurleysoftware.com>
Cc: codonell <codonell@redhat.com>, Eduard Benes <ebenes@redhat.com>,
        Karel Srot <ksrot@redhat.com>, Matt Newsome <mnewsome@redhat.com>,
        linux-kernel@vger.kernel.org
Subject: Re: v3.10 breaks T.tcflush (Was: tty: disassociate_ctty() sends
	the extra SIGCONT)
Message-ID: <20130925175612.GA26389@redhat.com>
References: <20130915155006.GA11913@redhat.com> <20130925162125.GA18984@redhat.com>
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On 09/25, Oleg Nesterov wrote:
>
> See lsb-test-core/lts_vsx-pcts/tset/POSIX.os/devclass/tcflush/tcflush.c
> attached below. test4() fails with
>
> 	SIGTTOU not received
> 	tcflush(TCIOFLUSH) action was performed
> 	when TOSTOP was set

Just in case... I do not really know if it was broken by 3.10 or earlier.

And of course, I do not know who is actually wrong, kernel or lsb.

Oleg.