From: David Howells <dhowells@redhat.com>
To: Oleg Nesterov <oleg@redhat.com>
Cc: dhowells@redhat.com, James Morris <jmorris@namei.org>,
Eric Paris <eparis@parisplace.org>,
Roland McGrath <roland@redhat.com>,
Stephen Smalley <sds@tycho.nsa.gov>,
linux-kernel@vger.kernel.org
Subject: Re: Q: selinux_bprm_committed_creds() && signals/do_wait
Date: Wed, 29 Apr 2009 11:02:50 +0100 [thread overview]
Message-ID: <7242.1240999370@redhat.com> (raw)
In-Reply-To: <20090429065809.GA477@redhat.com>
Oleg Nesterov <oleg@redhat.com> wrote:
> we can flush the signal which was sent after we changed SID/cred and passed
> the new permission checks,
I think you mean to say, rather, that we can *lose* a signal that was sent,
because flush_signals() discards all pending signals unconditionally, and so
SIGKILL can be lost?
I suspect we should pass SIGKILL and possibly SIGSTOP through the flush.
David
next prev parent reply other threads:[~2009-04-29 10:03 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-28 22:30 Q: selinux_bprm_committed_creds() && signals/do_wait Oleg Nesterov
2009-04-28 23:33 ` Oleg Nesterov
2009-04-29 16:01 ` [PATCH] do_wait: do take security_task_wait() into account Oleg Nesterov
2009-04-30 20:31 ` Roland McGrath
2009-04-30 22:51 ` James Morris
2009-05-06 11:46 ` Stephen Smalley
2009-04-29 0:29 ` Q: selinux_bprm_committed_creds() && signals/do_wait James Morris
2009-04-29 6:58 ` Oleg Nesterov
2009-04-29 10:02 ` David Howells [this message]
2009-04-29 10:25 ` Oleg Nesterov
2009-04-29 11:17 ` David Howells
2009-04-29 11:55 ` Oleg Nesterov
2009-04-29 12:42 ` David Howells
2009-04-29 12:45 ` David Howells
2009-04-29 13:28 ` Oleg Nesterov
2009-04-30 0:37 ` James Morris
2009-04-29 12:20 ` Stephen Smalley
2009-04-29 12:56 ` Oleg Nesterov
2009-04-29 13:16 ` Stephen Smalley
2009-04-29 13:42 ` Oleg Nesterov
2009-04-29 13:43 ` Stephen Smalley
2009-04-29 14:47 ` Alan Cox
2009-04-29 15:39 ` Stephen Smalley
2009-04-29 13:18 ` Stephen Smalley
2009-04-29 13:30 ` Oleg Nesterov
2009-04-29 14:02 ` ptrace: selinux_bprm_committed_creds: simplify __wake_up_parent() code and s/parent/real_parent/ Oleg Nesterov
2009-04-29 14:08 ` Oleg Nesterov
2009-04-30 22:44 ` Roland McGrath
2009-05-03 20:10 ` Oleg Nesterov
2009-05-04 17:38 ` Roland McGrath
2009-04-30 0:38 ` James Morris
2009-04-30 22:38 ` Roland McGrath
2009-04-29 14:48 ` Q: selinux_bprm_committed_creds() && signals/do_wait Alan Cox
2009-05-01 0:02 ` Roland McGrath
2009-05-01 0:44 ` David Howells
2009-05-01 0:50 ` Roland McGrath
2009-05-03 20:21 ` Oleg Nesterov
2009-05-04 17:34 ` Roland McGrath
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