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From: Oleg Nesterov <oleg@redhat.com>
To: Hugh Dickins <hugh@veritas.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Joe Malicki <jmalicki@metacarta.com>,
	Michael Itz <mitz@metacarta.com>,
	Kenneth Baker <bakerk@metacarta.com>,
	Chris Wright <chrisw@sous-sol.org>,
	David Howells <dhowells@redhat.com>,
	Alexey Dobriyan <adobriyan@gmail.com>,
	Greg Kroah-Hartman <gregkh@suse.de>,
	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	Roland McGrath <roland@redhat.com>
Subject: Re: [PATCH 3/2] check_unsafe_exec: rcu_read_unlock
Date: Fri, 24 Apr 2009 16:34:46 +0200	[thread overview]
Message-ID: <20090424143446.GA6849@redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0904241255580.20196@blonde.anvils>

On 04/24, Hugh Dickins wrote:
>
> --- 2.6.30-rc3-next-20090424/fs/exec.c	2009-04-24 12:23:43.000000000 +0100
> +++ linux/fs/exec.c	2009-04-24 12:26:10.000000000 +0100
> @@ -1043,7 +1043,7 @@ int check_unsafe_exec(struct linux_binpr
>  		if (t->fs == p->fs)
>  			n_fs++;
>  	}
> -	rcu_read_lock();
> +	rcu_read_unlock();

I'd say this change is not bad. Except it discloses the fact I didn't
bother to test my trivial patch.

Thanks a lot Hugh!!!

And my apologies to all.

Oleg.


  reply	other threads:[~2009-04-24 14:41 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-03-28 23:16 [PATCH 1/4] compat_do_execve should unshare_files Hugh Dickins
2009-03-28 23:20 ` [PATCH 2/4] fix setuid sometimes doesn't Hugh Dickins
2009-03-29  0:53   ` Q: check_unsafe_exec() races (Was: [PATCH 2/4] fix setuid sometimes doesn't) Oleg Nesterov
2009-03-29  4:10     ` Al Viro
2009-03-29  4:14       ` Al Viro
2009-03-29  4:52       ` Oleg Nesterov
2009-03-29  5:55         ` Al Viro
2009-03-29  6:01           ` Al Viro
2009-03-29 21:36             ` Oleg Nesterov
2009-03-29 22:20               ` Al Viro
2009-03-29 23:56                 ` Oleg Nesterov
2009-03-30  0:03                   ` Oleg Nesterov
2009-03-30  1:08                     ` Al Viro
2009-03-30  1:13                       ` Al Viro
2009-03-30  1:36                         ` Oleg Nesterov
2009-03-30  1:40                           ` Oleg Nesterov
2009-03-30 12:31                             ` Al Viro
2009-03-30 14:32                               ` Hugh Dickins
2009-03-31  6:16                                 ` Al Viro
2009-04-01  0:28                                   ` Hugh Dickins
2009-04-01  2:38                                     ` Al Viro
2009-04-01  3:03                                       ` Al Viro
2009-04-01 11:25                                         ` Hugh Dickins
2009-04-06 15:31                                         ` Oleg Nesterov
2009-04-19 16:30                                           ` Hugh Dickins
2009-04-21 16:10                                             ` Oleg Nesterov
2009-04-21 16:31                                               ` Linus Torvalds
2009-04-21 17:15                                                 ` Oleg Nesterov
2009-04-21 17:35                                                   ` Linus Torvalds
2009-04-21 19:39                                                     ` Hugh Dickins
2009-04-23 23:01                                                       ` [PATCH 1/2] do_execve() must not clear fs->in_exec if it was set by another thread Oleg Nesterov
2009-04-23 23:18                                                         ` Roland McGrath
2009-04-23 23:31                                                         ` Al Viro
2009-04-24 11:57                                                           ` [PATCH 3/2] check_unsafe_exec: rcu_read_unlock Hugh Dickins
2009-04-24 14:34                                                             ` Oleg Nesterov [this message]
2009-04-24  4:20                                                         ` [PATCH 1/2] do_execve() must not clear fs->in_exec if it was set by another thread Hugh Dickins
2009-04-23 23:02                                                       ` [PATCH 2/2] check_unsafe_exec: s/lock_task_sighand/rcu_read_lock/ Oleg Nesterov
2009-04-23 23:18                                                         ` Roland McGrath
2009-04-24  4:29                                                         ` Hugh Dickins
2009-04-01 11:18                                       ` Q: check_unsafe_exec() races (Was: [PATCH 2/4] fix setuid sometimes doesn't) Hugh Dickins
2009-04-06 15:51                                       ` Oleg Nesterov
2009-04-19 16:44                                         ` Hugh Dickins
2009-04-21 16:39                                           ` Oleg Nesterov
2009-03-30 23:45                               ` Serge E. Hallyn
2009-03-31  6:19                                 ` Al Viro
2009-03-28 23:21 ` [PATCH 3/4] fix setuid sometimes wouldn't Hugh Dickins
2009-03-29 11:19   ` Alexey Dobriyan
2009-03-29 21:48     ` Oleg Nesterov
2009-03-29 22:37       ` Al Viro
2009-03-28 23:23 ` [PATCH 4/4] Annotate struct fs_struct's usage count restriction Hugh Dickins

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