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From: David Sterba <dsterba@suse.cz>
To: Qu Wenruo <quwenruo.btrfs@gmx.com>
Cc: "linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
Subject: Re: btrfs-progs: misc/016 hangs at ioctl
Date: Wed, 4 Dec 2019 17:17:23 +0100
Message-ID: <20191204161723.GE2734@twin.jikos.cz> (raw)
In-Reply-To: <0a3fa957-b551-022b-8f6a-129e117626a7@gmx.com>

On Wed, Dec 04, 2019 at 02:08:14PM +0800, Qu Wenruo wrote:
> On 2019/12/4 下午2:06, Qu Wenruo wrote:
> > Found a strange failure at btrfs-progs selftest misc/016.
> > 
> > It hangs at current master 63de37476ebd ("Merge tag
> > 'tag-chrome-platform-for-v5.5' of
> > git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux").
> > 
> > What makes it even more mysterious is, misc-5.5 passes.
> > 
> > Since there is no other btrfs pull, it's caused by some upstream
> > non-btrfs commits.
> 
> BTW, no blocked kernel thread, no CPU usage.
> 
> And the hang can be canceled with a signal.
> 
> > 
> > Doing bisecting, but any clue will be appreciated.

This looks like a problem caused by recent merge of updates to pipe
(commit 6a965666b7e7475c2f8c8e724703db58b8a8a445). I can reproduce that
and now building test kernel before that commit. As this also blocks all
fstests that use send, we have to wait until it's fixed in master
branch.

  reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-04  6:06 Qu Wenruo
2019-12-04  6:08 ` Qu Wenruo
2019-12-04 16:17   ` David Sterba [this message]
2019-12-04 16:29     ` David Sterba
2019-12-04 17:06       ` David Sterba
2019-12-09 15:32 ` David Sterba

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