Date: Mon, 14 Sep 2009 15:47:17 +0300 From: Dan Naumov <dan.naumov@gmail.com> To: Attilio Rao <attilio@freebsd.org> Cc: barbara <barbara.xxx1975@libero.it>, freebsd-stable <freebsd-stable@freebsd.org>, "C. C. Tang" <hiyorin@gmail.com> Subject: Re: 7.2-release/amd64: panic, spin lock held too long Message-ID: <cf9b1ee00909140547j67ed0fc6sc15fa238a8efbfc8@mail.gmail.com> In-Reply-To: <3bbf2fe10909140543w56783cc8of964f464d9314db2@mail.gmail.com> References: <KN4BGI$40ABF3E58EAD1201403C9DA561E2402F@libero.it> <4A667469.1080805@gmail.com> <3bbf2fe10907220930y27b5da04sd0a71d57b6a9d191@mail.gmail.com> <4A67C9C7.6090301@gmail.com> <3bbf2fe10909140543w56783cc8of964f464d9314db2@mail.gmail.com>
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On Mon, Sep 14, 2009 at 3:43 PM, Attilio Rao <attilio@freebsd.org> wrote: > 2009/7/23 C. C. Tang <hiyorin@gmail.com>: >> 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=3Dkern/134584 >>>>> >>>> I have no idea about it but I can tell the difference... >>>> My machine panic randomly rather than on shutdown and I remembered tha= t >>>> 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. >>> Can you try with a fresh new -CURRENT if any? >> >> My problem is on i386 version of 7.2-RELEASE-p2 on Intel Atom 330 CPU. >> And my system just panic randomly with "spin lock held too long". >> It didn't panic at reboot or shutdown so I think it the problem is somew= hat >> different from that mentioned by Barbara's PR? >> >> Anyway I disabled powerd and it seems become stable now. >> >> And I am sorry that my system has been put into service so it would be h= ard >> for me to switch to -CURRENT... =A0:( > > Can you re-enable powerd and try the attached patch?: > http://www.freebsd.org/~attilio/sched_ule.diff > > The patch is against STABLE_7, but I think HEAD has the same bug. > Please try it and report to me. > > Attilio Sadly I can't test this, I had to put the machine into production using another OS. I hope the patch fixes the issue, so I can at some point evaluate using FreeBSD on this hardware again. - Dan
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