From: "J. Bruce Fields" <bfields@fieldses.org>
To: Menyhart Zoltan <Zoltan.Menyhart@bull.net>
Cc: linux-nfs@vger.kernel.org, neilb@suse.de
Subject: Re: "xprt" reference count drops to 0
Date: Fri, 22 Oct 2010 23:32:50 -0400 [thread overview]
Message-ID: <20101023033250.GA24630@fieldses.org> (raw)
In-Reply-To: <20101022232133.GD22837@fieldses.org>
On Fri, Oct 22, 2010 at 07:21:33PM -0400, J. Bruce Fields wrote:
> On Fri, Oct 22, 2010 at 07:01:12PM -0400, J. Bruce Fields wrote:
> > On Fri, Oct 22, 2010 at 05:20:07PM -0400, J. Bruce Fields wrote:
> > > On Fri, Oct 22, 2010 at 05:00:50PM +0200, Menyhart Zoltan wrote:
> > > > J. Bruce Fields wrote:
> > > > >On Tue, Oct 05, 2010 at 10:22:30AM +0200, Menyhart Zoltan wrote:
> > > > >>Due to some race conditions, the reference count can become 0
> > > > >>while "xprt" is still on a "pool":
> > > > >
> > > > >Apologies, your email got buried in my inbox....
> > > > >
> > > > >>
> > > > >>WARNING: at lib/kref.c:43 kref_get+0x23/0x2d()
> > > > >> [] kref_get+0x23/0x2d
> > > > >> [] svc_xprt_get+0x12/0x14 [sunrpc]
> > > > >> [] svc_recv+0x2db/0x78a [sunrpc]
> > > > >
> > > > >Which kernel exactly did you see this on? Is it reproduceable?
> > > >
> > > > I saw it on a 2.6.32.
> > > > It has not been corrected for the 2.6.36-rc3 yet.
Doh. Wait, when you say "has not been corrected on 2.6.36-rc3", do you
mean you've actually *seen* the problem occur on 2.6.36-rc3?
If not, it's more likely you're seeing the problem that was fixed by
1b644b6e6f6160ae35ce4b52c2ca89ed3e356e18, in 2.6.34-rc1.
--b.
next prev parent reply other threads:[~2010-10-23 3:32 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-01 12:17 Relocate NFS root FS for maintenance Greg
2010-09-01 17:34 ` J. Bruce Fields
2010-09-01 21:52 ` Tom Haynes
2010-09-02 7:32 ` Greg
2010-09-02 16:06 ` J. Bruce Fields
2010-09-07 6:59 ` Greg
2010-09-02 6:56 ` statfs() gives ESTALE error Menyhart Zoltan
2010-09-07 18:32 ` Trond Myklebust
2010-09-08 13:33 ` Re :statfs() " Menyhart Zoltan
2010-09-08 20:25 ` Trond Myklebust
2010-09-09 8:12 ` Menyhart Zoltan
2010-09-20 12:49 ` Locking question around "...PagePrivate()" Menyhart Zoltan
2010-09-20 13:55 ` Trond Myklebust
2010-10-05 8:22 ` "xprt" reference count drops to 0 Menyhart Zoltan
2010-10-21 20:38 ` J. Bruce Fields
2010-10-22 15:00 ` Menyhart Zoltan
2010-10-22 21:20 ` J. Bruce Fields
2010-10-22 23:01 ` J. Bruce Fields
2010-10-22 23:21 ` J. Bruce Fields
2010-10-23 3:32 ` J. Bruce Fields [this message]
2010-10-25 1:09 ` J. Bruce Fields
2010-10-25 1:21 ` [PATCH 1/4] svcrpc: never clear XPT_BUSY on dead xprt J. Bruce Fields
2010-10-25 1:43 ` Neil Brown
2010-10-25 20:21 ` J. Bruce Fields
2010-10-25 22:58 ` Neil Brown
2010-10-25 23:03 ` J. Bruce Fields
2010-10-25 23:54 ` Neil Brown
2010-10-26 0:11 ` J. Bruce Fields
2010-10-26 0:28 ` J. Bruce Fields
2010-10-26 0:30 ` J. Bruce Fields
2010-10-26 1:28 ` Neil Brown
2010-10-26 12:59 ` J. Bruce Fields
2010-10-26 16:05 ` J. Bruce Fields
2010-11-12 19:00 ` J. Bruce Fields
2010-10-25 1:21 ` [PATCH 2/4] svcrpc: assume svc_delete_xprt() called only once J. Bruce Fields
2010-10-25 1:21 ` [PATCH 3/4] svcrpc: no need for XPT_DEAD check in svc_xprt_enqueue J. Bruce Fields
2010-10-25 1:21 ` [PATCH 4/4] svcrpc: svc_tcp_sendto XTP_DEAD check is redundant J. Bruce Fields
2010-10-25 2:10 ` Neil Brown
2010-10-25 15:03 ` J. Bruce Fields
2010-10-25 17:46 ` J. Bruce Fields
2010-10-25 23:08 ` Neil Brown
2010-10-26 1:33 ` J. Bruce Fields
2010-10-25 23:23 ` Neil Brown
2010-10-26 1:25 ` J. Bruce Fields
2010-10-25 11:56 ` "xprt" reference count drops to 0 Menyhart Zoltan
2010-10-25 14:36 ` J. Bruce Fields
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