From: Peter Hurley <peter@hurleysoftware.com>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.cz>,
Linus Torvalds <torvalds@linux-foundation.org>,
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)
Date: Wed, 25 Sep 2013 20:06:58 -0400 [thread overview]
Message-ID: <52437AA2.5040907@hurleysoftware.com> (raw)
In-Reply-To: <20130925162125.GA18984@redhat.com>
On 09/25/2013 12:21 PM, Oleg Nesterov wrote:
> Peter, thanks for your explanations about tty_old_pgrp/etc,
> I'll try to reply later. I need to read your email carefully.
Ok.
If you're interested, I highly recommend reading Chapter 34
("Process Groups, Sessions, and Job Control") of Michael Kerrisk's
book, The Linux Programming Interface.
> FYI, LSB tests report another failure starting from 3.10.
>
> 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
>
> I'll try to investigate, but let me repeat I know absolutely nothing
> about drivers/tty/, termios, etc. Perhaps you can take a look? So far I
> didn't even look into the attached code, I have no idea what it does.
Thanks for the report. I looked into this and found another regression.
Patch coming.
Looks like I'll be integrating LSB into my testbench.
Regards,
Peter Hurley
next prev parent reply other threads:[~2013-09-26 0:07 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-15 15:50 [PATCH 0/1] tty: disassociate_ctty() sends the extra SIGCONT Oleg Nesterov
2013-09-15 15:50 ` [PATCH 1/1] " Oleg Nesterov
2013-09-16 22:16 ` Peter Hurley
2013-09-17 19:41 ` Carlos O'Donell
2013-09-17 20:30 ` Peter Hurley
2013-09-17 20:39 ` Peter Hurley
2013-09-21 18:34 ` Oleg Nesterov
2013-09-21 20:25 ` Peter Hurley
2013-09-22 20:03 ` Oleg Nesterov
2013-09-24 18:18 ` Peter Hurley
2013-09-25 16:21 ` v3.10 breaks T.tcflush (Was: tty: disassociate_ctty() sends the extra SIGCONT) Oleg Nesterov
2013-09-25 17:56 ` Oleg Nesterov
2013-09-26 0:06 ` Peter Hurley [this message]
2013-09-26 0:13 ` [PATCH] tty: Fix SIGTTOU not sent with tcflush() Peter Hurley
2013-09-26 0:24 ` Greg Kroah-Hartman
2013-09-26 16:36 ` Oleg Nesterov
2013-09-26 19:10 ` Oleg Nesterov
2013-09-26 21:18 ` Peter Hurley
2013-09-27 5:19 ` Karel Srot
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