NetBSD Problem Report #18975
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Date: Sat, 09 Nov 2002 01:53:13 +0900
From: yamt@mwd.biglobe.ne.jp
Sender: gnats-bugs-owner@netbsd.org
Reply-To: yamt@mwd.biglobe.ne.jp
To: gnats-bugs@gnats.netbsd.org
Subject: lfs_bmapv + dounmount deadlock
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>Number: 18975
>Category: kern
>Synopsis: lfs_bmapv + dounmount deadlock
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Fri Nov 08 16:55:05 +0000 2002
>Closed-Date:
>Last-Modified:
>Originator: YAMAMOTO Takashi <yamt@mwd.biglobe.ne.jp>
>Release: NetBSD 1.6K
>Organization:
>Environment:
System: NetBSD kaeru 1.6K NetBSD 1.6K (build.kaeru) #170: Sat Nov 9 00:41:22 JST 2002 takashi@kaeru:/usr/home/takashi/work/kernel/build.kaeru i386
Architecture: i386
Machine: i386
>Description:
1. cleaner thread calls lfs_bmapv. it calls vfs_busy.
2. another thread set MNT_UNMOUNT in dounmount.
3. cleaner thread wakes up and vfs_busy again in getnewvnode.
4. => deadlock
>How-To-Repeat:
try to unmount a lfs partition when cleaner is active.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
(Contact us)
$NetBSD: query-full-pr,v 1.39 2013/11/01 18:47:49 spz Exp $
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