From: Ingo Molnar <mingo@elte.hu>
To: Andi Kleen <ak@suse.de>
Cc: Steven Rostedt <rostedt@goodmis.org>,
pavel@suse.cz, LKML <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH -rt] race condition in fs/compat.c with compat_sys_ioctl
Date: Wed, 16 Nov 2005 09:33:59 +0100 [thread overview]
Message-ID: <20051116083359.GB14829@elte.hu> (raw)
In-Reply-To: <p73y83pp25r.fsf@verdi.suse.de>
* Andi Kleen <ak@suse.de> wrote:
> Steven Rostedt <rostedt@goodmis.org> writes:
> >
> > That's the problem. I found out that one ioctl might sleep holding the
> > sem and won't be woken up until another process calls another ioctl to
> > wake it up. But unfortunately, the one waking up the sleeper will block
> > on the sem. (the killer was tty_wait_until_sent)
>
> You should have looked into mainline first. The semaphore is already
> gone because it wasn't even needed anymore.
well 2.6.14 isnt _that_ old :-) But in any case, it's great that the
semaphore is gone!
Ingo
next prev parent reply other threads:[~2005-11-16 8:33 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1131821278.5047.8.camel@localhost.localdomain>
[not found] ` <5bdc1c8b0511121725u6df7ad9csb9cb56777fa6fe64@mail.gmail.com>
[not found] ` <Pine.LNX.4.58.0511122149020.25152@localhost.localdomain>
[not found] ` <5bdc1c8b0511121914v12dc4402u424fbaf416bf3710@mail.gmail.com>
[not found] ` <1131853456.5047.14.camel@localhost.localdomain>
[not found] ` <5bdc1c8b0511130634h501fb565v58906bdfae788814@mail.gmail.com>
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[not found] ` <5bdc1c8b0511141057l60a2e778x89155cd5484d532f@mail.gmail.com>
2005-11-16 4:29 ` [PATCH -rt] race condition in fs/compat.c with compat_sys_ioctl Steven Rostedt
2005-11-16 5:55 ` Andi Kleen
2005-11-16 8:33 ` Ingo Molnar [this message]
2005-11-16 9:46 ` Steven Rostedt
2005-11-16 10:03 ` Ingo Molnar
2005-11-16 8:32 ` Ingo Molnar
2005-11-16 9:40 ` Steven Rostedt
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