NetBSD Problem Report #43328

From www@NetBSD.org  Wed May 19 17:29:05 2010
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Date: Wed, 19 May 2010 17:29:04 +0000 (UTC)
From: pooka@iki.fi
Reply-To: pooka@iki.fi
To: gnats-bugs@NetBSD.org
Subject: namei is harder than sys_extattrctl thinks
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>Number:         43328
>Category:       kern
>Synopsis:       namei is harder than sys_extattrctl thinks
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed May 19 17:30:00 +0000 2010
>Closed-Date:    Sat May 22 10:34:56 +0000 2010
>Last-Modified:  Sat May 22 10:34:56 +0000 2010
>Originator:     Antti Kantee
>Release:        
>Organization:
>Environment:
>Description:
sys_extattrctl does namei() with a locked vnode.  That's not a good idea
for quite boomy reasons.

(didn't I file a PR about this or fix this already a few years ago?)
>How-To-Repeat:
extattrctl with a pathflip -> boom
>Fix:
namei in the opposite order?

>Release-Note:

>Audit-Trail:

State-Changed-From-To: open->closed
State-Changed-By: pooka@NetBSD.org
State-Changed-When: Sat, 22 May 2010 13:34:56 +0300
State-Changed-Why:
fixed in vfs_xattr.c rev 1.21


>Unformatted:

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