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From: Andrew Morton <akpm@osdl.org>
To: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: grievre@gmail.com, linux-kernel@vger.kernel.org
Subject: Re: NFS bug?
Date: Fri, 21 Apr 2006 11:31:56 -0700	[thread overview]
Message-ID: <20060421113156.35c626dc.akpm@osdl.org> (raw)
In-Reply-To: <1145628470.8150.10.camel@lade.trondhjem.org>

Trond Myklebust <trond.myklebust@fys.uio.no> wrote:
>
> > I'd be guessing that filldir64() was passed a negative namlen.
> 
>  Why would that trigger a bug in __copy_from_user_ll()? I could see it
>  triggering errors in copy_to_user(), but not copy_from_*...

Ah.  No, I cannot see why getdents wold run copy_from_user().

I wonder why that stack trace didn't come out.  Perhaps running `dmesg -n
7' prior to triggerng the crash will help.  (It shouldn't, but we might
have broken it).


  parent reply	other threads:[~2006-04-21 18:33 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-04-20 16:37 Robert Merrill
2006-04-20 16:41 ` Trond Myklebust
     [not found]   ` <b3be17f30604200953i652e14a2n908f1a066ffe4e7f@mail.gmail.com>
     [not found]     ` <1145555789.8136.13.camel@lade.trondhjem.org>
2006-04-20 18:02       ` Robert Merrill
2006-04-20 18:10         ` Trond Myklebust
2006-04-20 18:14           ` Robert Merrill
2006-04-20 19:20             ` Trond Myklebust
2006-04-20 20:29               ` Robert Merrill
2006-04-21  7:55               ` Andrew Morton
2006-04-21 14:07                 ` Trond Myklebust
2006-04-21 16:43                   ` Joshua Hudson
2006-04-21 18:31                   ` Andrew Morton [this message]
2006-04-21 19:34                     ` Trond Myklebust
2006-04-23  7:29                       ` Robert Merrill

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