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From: Roland McGrath <roland@redhat.com>
To: Chris Wright <chrisw@osdl.org>
Cc: "Bhavesh P. Davda" <bhavesh@avaya.com>,
	linux-kernel@vger.kernel.org, torvalds@osdl.org, "Glass,
	Kathleen K (Kathy)" <kkglass@avaya.com>,
	"Rhodes, James E (James)" <jrhodes@avaya.com>
Subject: Re: [PATCH 2.6.12.5] NPTL signal delivery deadlock fix
Date: Wed, 17 Aug 2005 12:18:36 -0700 (PDT)	[thread overview]
Message-ID: <20050817191836.0945E180988@magilla.sf.frob.com> (raw)
In-Reply-To: Chris Wright's message of  Wednesday, 17 August 2005 12:00:20 -0700 <20050817190020.GO7991@shell0.pdx.osdl.net>

> * Bhavesh P. Davda (bhavesh@avaya.com) wrote:
> > This bug is quite subtle and only happens in a very interesting
> > situation where a real-time threaded process is in the middle of a
> > coredump when someone whacks it with a SIGKILL. However, this deadlock
> > leaves the system pretty hosed and you have to reboot to recover.
> > 
> > Not good for real-time priority-preemption applications like our
> > telephony application, with 90+ real-time (SCHED_FIFO and SCHED_RR)
> > processes, many of them multi-threaded, interacting with each other for
> > high volume call processing.
> 
> Nice catch, also looks like something for -stable series.  Roland, any
> issue with this patch?

Ouch!  That one must be my fault.  I did a quick scan and didn't find any
other typos of that nature.  This fix definitely should go in everywhere ASAP.


Thanks,
Roland

      reply	other threads:[~2005-08-17 19:18 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-08-17 18:26 Bhavesh P. Davda
2005-08-17 19:00 ` Chris Wright
2005-08-17 19:18   ` Roland McGrath [this message]

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