Date: Tue, 13 Dec 2016 12:39:47 +0000 From: Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups@NTLWorld.com> To: FreeBSD Hackers <freebsd-hackers@freebsd.org>, supervision@list.skarnet.org Subject: Re: NOTE_TRACK, EVFILT_PROC, kqueue, and subreapers Message-ID: <67b4c42e-4e6b-ba64-b8bb-83a8a5dcfba7@NTLWorld.com> In-Reply-To: <20161211124637.GA17315@stack.nl> References: <20161201172846.GP3428@protected.rcdrun.com> <20161201124118.46778e2b@mydesk.domain.cxm> <20161201174837.GR3428@protected.rcdrun.com> <20161201125438.15230317@mydesk.domain.cxm> <20161206104020.6b2ebb30@eto-mona.office.smartweb.sk> <20161206102637.1ddd152a@mydesk.domain.cxm> <20161207155638.4b2dd629@eto-mona.office.smartweb.sk> <630ace89-e29b-d0d3-9f15-110d8dc3de08@NTLWorld.com> <20161208132842.5d7940bd@eto-mona.office.smartweb.sk> <f5f47d55-ec8e-75b6-935d-2d0d1111c449@NTLWorld.com> <20161211124637.GA17315@stack.nl>
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Jilles Tjoelker: > This should probably be fixed. There's another more insidious bug hiding inside kevent() somewhere that causes a kernel abend complaining about a sleeping thread holding a non-sleepable lock. One needs to make fairly heavy use of kevent() in order to trigger it, I believe, as I have only seen it so far on systems that do.
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