linux-kernel - Re: [RFC][PATCH 5/7][v4] Protect cinit from blocked fatal signals

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Message-Id: <20081231000445.CEBC8FC278@magilla.sf.frob.com>
Date:	Tue, 30 Dec 2008 16:04:45 -0800 (PST)
From:	Roland McGrath <roland@...hat.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
	ebiederm@...ssion.com, bastian@...di.eu.org, daniel@...ac.com,
	xemul@...nvz.org, containers@...ts.osdl.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH 5/7][v4] Protect cinit from blocked fatal signals

> > + * If @signal refers to a container-init and @signr is neither SIGKILL nor
> > + * SIGSTOP, it was queued because it was blocked when it was posted.
> 
> This is not right too. It is possible that init had a handler when
> the signal was sent, and the handler was set to SIG_DFL before the
> signal was dequeued.

do_sigaction's sig_handler_ignored() should exclude that.


Thanks,
Roland
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