From: Andrew Morton <akpm@osdl.org>
To: olof@austin.ibm.com (Olof Johansson)
Cc: jamie@shareable.org, torvalds@osdl.org,
linux-kernel@vger.kernel.org, rusty@rustcorp.com.au
Subject: Re: [PATCH/RFC] Futex mmap_sem deadlock
Date: Tue, 22 Feb 2005 15:20:27 -0800 [thread overview]
Message-ID: <20050222152027.7ace52e8.akpm@osdl.org> (raw)
In-Reply-To: <20050222224256.GA31341@austin.ibm.com>
olof@austin.ibm.com (Olof Johansson) wrote:
>
> + inc_preempt_count();
> + ret = get_user(curval, (int __user *)uaddr1);
> + dec_preempt_count();
That _should_ generate a might_sleep() warning, except it looks like we
forgot to add a check to get_user().
It would be better to use __copy_from_user_inatomic() here, I think.
next prev parent reply other threads:[~2005-02-22 23:15 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-22 19:06 Olof Johansson
2005-02-22 19:36 ` Linus Torvalds
2005-02-22 21:16 ` Benjamin Herrenschmidt
2005-02-22 21:19 ` Benjamin Herrenschmidt
2005-02-22 21:31 ` Linus Torvalds
2005-02-22 21:42 ` Benjamin Herrenschmidt
2005-02-22 22:10 ` Linus Torvalds
2005-02-22 22:24 ` Benjamin Herrenschmidt
2005-02-22 23:08 ` Greg KH
2005-02-22 19:55 ` Andrew Morton
2005-02-22 21:07 ` Jamie Lokier
2005-02-22 21:19 ` Olof Johansson
2005-02-22 22:09 ` Jamie Lokier
2005-02-22 21:19 ` Chris Friesen
2005-02-22 21:27 ` Jamie Lokier
2005-02-22 21:30 ` Linus Torvalds
2005-02-22 22:34 ` Jamie Lokier
2005-02-22 22:42 ` Olof Johansson
2005-02-22 23:20 ` Andrew Morton [this message]
2005-02-22 23:23 ` Olof Johansson
2005-02-23 14:49 ` Joe Korty
2005-02-23 15:54 ` Linus Torvalds
2005-02-23 17:10 ` Olof Johansson
2005-02-23 17:37 ` Arjan van de Ven
2005-02-23 18:22 ` Jamie Lokier
2005-02-23 18:34 ` Linus Torvalds
2005-02-23 18:49 ` Jamie Lokier
2005-02-23 19:12 ` Olof Johansson
2005-02-23 22:00 ` Linus Torvalds
2005-02-24 0:00 ` Jamie Lokier
2005-02-23 18:37 ` Olof Johansson
2005-02-22 21:40 ` Andrew Morton
2005-02-22 21:59 ` Linus Torvalds
2005-02-23 11:39 ` David Howells
2005-02-23 16:22 ` Olof Johansson
2005-02-23 18:44 ` David Howells
2005-02-23 11:42 ` David Howells
2005-02-23 11:24 ` David Howells
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