From: Jan Kara <jack@suse.cz>
To: Xiong Zhou <xzhou@redhat.com>
Cc: jack@suse.cz, linux-nvdimm@ml01.01.org,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: LTP rwtest01 blocks on DAX mountpoint
Date: Mon, 2 Jan 2017 18:16:17 +0100 [thread overview]
Message-ID: <20170102171617.GA23612@quack2.suse.cz> (raw)
In-Reply-To: <20161230093352.efidonh4btdbtaze@XZHOUW.usersys.redhat.com>
On Fri 30-12-16 17:33:53, Xiong Zhou wrote:
> On Sat, Dec 24, 2016 at 07:07:14PM +0800, Xiong Zhou wrote:
> > Hi lists,
> >
> > Since around 20161129 tag, LTP rwtest01 on dax mountpoint blocks
> > on linux-next tree, now on Linus tree.
> >
> > In "normal", rwtest01 subcase ends in a few minutes, now it keeps
> > running for hours on dax mountpoint, both ext4 and xfs. Ctrl + c
> > can interrupt it.
>
> Test programme is waiting for a memcpy call to return.
>
> From sysrq output, kernel code is not blocking on somewhere,
> it just wont return.
I was trying to reproduce this but for me rwtest01 completes just fine on
dax mountpoint (I've used your reproducer). So can you sample several
kernel stack traces to get a rough idea where the kernel is running?
Thanks!
Honza
--
Jan Kara <jack@suse.com>
SUSE Labs, CR
next prev parent reply other threads:[~2017-01-02 17:16 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-24 11:07 LTP rwtest01 blocks on DAX mountpoint Xiong Zhou
2016-12-30 9:33 ` Xiong Zhou
2017-01-02 10:05 ` Jan Kara
2017-01-02 17:16 ` Jan Kara [this message]
2017-01-02 21:49 ` Ross Zwisler
2017-01-03 6:49 ` Xiong Zhou
2017-01-03 16:57 ` Ross Zwisler
2017-01-04 1:21 ` Xiong Zhou
2017-01-04 1:49 ` Xiong Zhou
2017-01-04 9:48 ` Xiong Zhou
2017-01-04 16:40 ` Ross Zwisler
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