NetBSD Problem Report #32367
From yamt@mwd.biglobe.ne.jp Fri Dec 23 13:50:16 2005
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Date: Fri, 23 Dec 2005 22:49:46 +0900
From: yamt@mwd.biglobe.ne.jp
Reply-To: yamt@mwd.biglobe.ne.jp
To: gnats-bugs@netbsd.org
Subject: umount -f deadlock
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>Number: 32367
>Category: kern
>Synopsis: umount -f deadlock
>Confidential: no
>Severity: serious
>Priority: low
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Fri Dec 23 13:55:00 +0000 2005
>Originator: YAMAMOTO Takashi <yamt@mwd.biglobe.ne.jp>
>Release: NetBSD 3.99.14
>Organization:
>Environment:
System: NetBSD kaeru 3.99.14 NetBSD 3.99.14 (build.kaeru.xen.nodebug) #35: Wed Dec 21 22:05:16 JST 2005 takashi@kaeru:/usr/home/takashi/work/kernel/build.kaeru.xen.nodebug i386
Architecture: i386
Machine: i386
>Description:
umount marks the mount point IMNT_UNMOUNT and then
does vflush() -> vgonel() -> VOP_LOCK().
OTOH, eg. lookup does getnewvnode() -> vfs_busy() with
the parent vnode locked.
>How-To-Repeat:
code inspection.
>Fix:
>Unformatted:
(Contact us)
$NetBSD: query-full-pr,v 1.39 2013/11/01 18:47:49 spz Exp $
$NetBSD: gnats_config.sh,v 1.8 2006/05/07 09:23:38 tsutsui Exp $
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