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Date:      Thu, 17 Oct 2002 10:03:02 -0700
From:      Lars Eggert <larse@ISI.EDU>
To:        current <current@FreeBSD.org>
Subject:   three lock order reversals
Message-ID:  <3DAEED46.9070008@isi.edu>
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[-- Attachment #1 --]
Hi,

a general question first: Is there anything that would tell me which 
witness/lock warnings have been reported already? Or who to send 
witness/lock warnings to directly, without going through the list?

Here's a bunch of warnigns I've been seeing:

lock order reversal
1st 0xc9692000 vnode interlock (vnode interlock) @ 
/usr/src/sys/nfsclient/nfs_vnops.c:2629
2nd 0xc052ffc0 vm page queue mutex (vm page queue mutex) @ 
/usr/src/sys/vm/vm_kern.c:424

lock order reversal
1st 0xc0585ec0 spechash (spechash) @ /usr/src/sys/kern/vfs_subr.c:2748
2nd 0xc79c3de0 vnode interlock (vnode interlock) @ 
/usr/src/sys/kern/vfs_subr.c:2751

lock order reversal
1st 0xc6297bd4 xl0 (network driver) @ /usr/src/sys/pci/if_xl.c:1264
2nd 0xc0502140 allproc (allproc) @ /usr/src/sys/kern/kern_fork.c:317

(I also see the "usual" pcm lock warnigns, but sound under -current 
seems to be in a sorry state to begin with... ;-)

Lars
-- 
Lars Eggert <larse@isi.edu>           USC Information Sciences Institute

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