From: Alan Cox <alan@linux.intel.com>
To: Ilya Zykov <ilya@ilyx.ru>
Cc: Greg Kroah-Hartman <gregkh@suse.de>, linux-kernel@vger.kernel.org
Subject: Re: PROBLEM: Race condition in tty buffer's function flush_to_ldisc().
Date: Mon, 7 Nov 2011 11:58:02 +0000 [thread overview]
Message-ID: <20111107115802.23201d45@bob.linux.org.uk> (raw)
In-Reply-To: <4EB7BD9A.7070600@ilyx.ru>
On Mon, 07 Nov 2011 15:14:34 +0400
Ilya Zykov <ilya@ilyx.ru> wrote:
> Function flush_to_ldisc() call disc->ops->receive_buf(),
> without tty->buf.lock and with TTY_FLUSHING bit set.
flush_to_ldisc is single threaded for a given tty. If you fail to
ensure that is the case everything breaks.
What cases does this occur ?
Also for the other patches do you have benchmarks yet ?
Alan
next prev parent reply other threads:[~2011-11-07 11:47 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-07 11:14 PROBLEM: Race condition in tty buffer's function flush_to_ldisc() Ilya Zykov
2011-11-07 11:58 ` Alan Cox [this message]
2011-11-07 12:20 ` Ilya Zykov
2011-11-07 13:06 ` Alan Cox
2011-11-07 13:44 ` Ilya Zykov
2011-11-07 14:50 ` Alan Cox
2011-11-07 14:52 ` Ilya Zykov
2011-11-07 18:26 ` Ilya Zykov
2011-11-07 18:39 ` Alan Cox
2011-11-07 18:41 ` Alan Cox
2011-11-07 12:35 ` Ilya Zykov
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