Date: Thu, 23 Jul 2009 08:37:23 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-stable@freebsd.org Cc: Attilio Rao <attilio@freebsd.org>, barbara <barbara.xxx1975@libero.it>, "dan.naumov" <dan.naumov@gmail.com>, "C. C. Tang" <hiyorin@gmail.com> Subject: Re: 7.2-release/amd64: panic, spin lock held too long Message-ID: <200907230837.23937.jhb@freebsd.org> In-Reply-To: <3bbf2fe10907220930y27b5da04sd0a71d57b6a9d191@mail.gmail.com> References: <KN4BGI$40ABF3E58EAD1201403C9DA561E2402F@libero.it> <4A667469.1080805@gmail.com> <3bbf2fe10907220930y27b5da04sd0a71d57b6a9d191@mail.gmail.com>
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On Wednesday 22 July 2009 12:30:47 pm Attilio Rao wrote: > 2009/7/22 C. C. Tang <hiyorin@gmail.com>: > >> Could that one (on i386) be related? > >> http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/134584 > >> > > > > I have no idea about it but I can tell the difference... > > My machine panic randomly rather than on shutdown and I remembered that it > > failed to write core dump. It also failed to reboot automatically.. > > Is your problem on -CURRENT and amd64? > At some point there has been a problem with PAT support (and > tlb_shootdowns() could lead to a livelock hanging forever, leading to > such a bug) but I expect it is fixed now. That only happens in a test kernel module and not in stock FreeBSD (and no, it is not yet fixed). -- John Baldwin
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