Date: Sun, 27 Jun 1999 23:56:46 +0800 From: Peter Wemm <peter@netplex.com.au> To: Seigo Tanimura <tanimura@naklab.dnj.ynu.ac.jp> Cc: hibma@skylink.it, current@FreeBSD.ORG, mckusick@FreeBSD.ORG Subject: Re: lockmgr panics Message-ID: <19990627155646.9DBCB81@overcee.netplex.com.au> In-Reply-To: Your message of "Mon, 28 Jun 1999 00:49:21 %2B0900." <19990628004921U.tanimura@sakuramail.com>
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Seigo Tanimura wrote:
> From: Nick Hibma <hibma@skylink.it>
> Subject: lockmgr panics
> Date: Sun, 27 Jun 1999 14:15:06 +0200 (CEST)
> Message-ID: <Pine.BSF.3.96.990627140352.2769A-100000@heidi.plazza.it>
>
> hibma> lockmgr: pid <some pid>, not exclusive lock holder -2 unlocking
>
>
> Did you really get that message? if the unlocking process is
> pid -2(LK_KERNPROC), we can unlock, as in:
>
> [sys/kern/kern_lock.c:lockmgr()]
> > case LK_RELEASE:
> > if (lkp->lk_exclusivecount != 0) {
> > #if !defined(MAX_PERF)
> > if (lkp->lk_lockholder != pid &&
> > lkp->lk_lockholder != LK_KERNPROC) /* FALSE */
> > panic("lockmgr: pid %d, not %s %d unlocking
",
> > pid, "exclusive lock holder",
> > lkp->lk_lockholder);
>
> Although the fixes by Peter seemed to have solved the problem, I saw
>
> lockmgr: pid -2, not exclusive lock holder 48 unlocking
>
> on savecore(8) after another panic reboot.
I've had that too, also from savecore...
Cheers,
-Peter
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