From nobody@FreeBSD.org  Wed Mar 11 17:17:32 2009
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Date: Wed, 11 Mar 2009 17:17:32 GMT
From: Tim Kientzle <kientzle@FreeBSD.org>
To: freebsd-gnats-submit@FreeBSD.org
Subject: ZFS locks up on extattr_list_link syscall
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>Number:         132551
>Category:       kern
>Synopsis:       [zfs] ZFS locks up on extattr_list_link syscall
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-fs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Mar 11 17:20:06 UTC 2009
>Closed-Date:    Wed Sep 09 20:11:25 UTC 2009
>Last-Modified:  Wed Sep 09 20:11:25 UTC 2009
>Originator:     Tim Kientzle
>Release:        -CURRENT
>Organization:
>Environment:
>Description:
See bin/132452 for the initial reports of this.

I added extended attribute support to tar recently and
several people reported that making an extattr_list_link
syscall on a ZFS volume hangs the CPU (100% system time)
and results in an unkillable process.  This has been
reported on both amd64 and i386 architectures with recent
-CURRENT.

I don't have a machine with ZFS handy to try to reproduce
this myself; I don't know if this affects 7-STABLE; I don't
know if it also occurs for extattr_list_file or other extattr
system calls.  I'm eager to get this fixed so I can turn
tar's extended attribute support back on.


>How-To-Repeat:
touch foo
lsextattr -h user foo

>Fix:


>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: freebsd-bugs->freebsd-fs 
Responsible-Changed-By: linimon 
Responsible-Changed-When: Thu Mar 12 06:22:35 UTC 2009 
Responsible-Changed-Why:  
Over to maintainer(s). 

http://www.freebsd.org/cgi/query-pr.cgi?pr=132551 
State-Changed-From-To: open->closed 
State-Changed-By: pjd 
State-Changed-When: ro 9 wrz 2009 20:11:02 UTC 
State-Changed-Why:  
Already fixed, see bin/132452. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=132551 
>Unformatted:
