Date: Mon, 23 Mar 2015 11:32:12 -0700 (MST) From: BBlister <bblister@gmail.com> To: freebsd-questions@freebsd.org Subject: Re: Un-kill-able process hang at umtxpi state with 100% cpu Message-ID: <1427135532406-5999436.post@n5.nabble.com> In-Reply-To: <5510594B.6010602@gmail.com> References: <1427109169038-5999345.post@n5.nabble.com> <1427134474819-5999426.post@n5.nabble.com> <5510594B.6010602@gmail.com>
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The process named c1 in the home directory of that student, had an accompanied c1.c file that actually is one that spawn many working pthreads and synchronizes them at the end. I executed by a normal user and nothing strange happened. So I assume that was a rare timing issue/race condition that triggered this error. I will have to upgrade of course to 9.3 in order to rule out old problems. So, the takeaway of this is that sometimes when kill -KILL does not work, kill -STOP may do the job :) -- View this message in context: http://freebsd.1045724.n5.nabble.com/Un-kill-able-process-hang-at-umtxpi-state-with-100-cpu-tp5999345p5999436.html Sent from the freebsd-questions mailing list archive at Nabble.com.
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