Date: Tue, 29 Jan 2008 14:08:40 -0800 From: Doug Barton <dougb@FreeBSD.org> To: Attilio Rao <attilio@freebsd.org> Cc: Kostik Belousov <kostikbel@gmail.com>, Yar Tikhiy <yar@comp.chem.msu.su>, freebsd-current@freebsd.org Subject: Re: panic: System call lstat returning with 1 locks held Message-ID: <479FA3E8.10606@FreeBSD.org> In-Reply-To: <3bbf2fe10801270642m5ec609d8xb29add77ced36d8a@mail.gmail.com> References: <790a9fff0801150552l542a4238ofc12efe5fdb45fc2@mail.gmail.com> <3bbf2fe10801240707o72b927cg74dbf9b7bbcd88fc@mail.gmail.com> <20080125075551.GB21633@comp.chem.msu.su> <3bbf2fe10801250000k5852c2f2j5d1897c900096818@mail.gmail.com> <20080126142901.GD49535@comp.chem.msu.su> <479B6303.6000401@FreeBSD.org> <3bbf2fe10801260918k56c1a73hf28ff154eca0b74c@mail.gmail.com> <479BBDAA.6000008@FreeBSD.org> <3bbf2fe10801261657x7d7c9de4q71adeaf3a2dd8159@mail.gmail.com> <479C0B5B.9030709@FreeBSD.org> <3bbf2fe10801270642m5ec609d8xb29add77ced36d8a@mail.gmail.com>
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Attilio Rao wrote:
> 2008/1/27, Doug Barton <dougb@freebsd.org>:
>> Attilio Rao wrote:
>>
>>> As my really first commit about VFS happened on 28 december (and it
>>> should also be a nop), and you reported a 23 december kernel, it seems
>>> like the problem was alredy there by time.
>> Ok, so you're off the hook. :) Interested in helping track down why
>> it's panic'ing?
>
> Sure, I'm testing a patch which instruments lockmgr with ktr and
> witness support.
> I will post later in the day in order to make consumer-available.
ok. FYI I tried torture-testing it today, and thing are looking a
little better. It only paniced once, with the same message as in the
subject but it was stat, not lstat. Unfortunately it didn't actually
do the dump, so I don't have a backtrace. If I can get it to
panic&dump I'll let you know.
Doug
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