linux-kernel - Re: [linus:master] [btrfs] 5f58d783fd: xfstests.btrfs.172.fail

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Message-ID: <ZBvQe18irieSNw07@xsang-OptiPlex-9020>
Date:   Thu, 23 Mar 2023 12:07:23 +0800
From:   Oliver Sang <oliver.sang@...el.com>
To:     Anand Jain <anand.jain@...cle.com>
CC:     <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
        <linux-kernel@...r.kernel.org>, David Sterba <dsterba@...e.com>,
        Daan De Meyer <daandemeyer@...com>,
        "Josef Bacik" <josef@...icpanda.com>, <linux-btrfs@...r.kernel.org>
Subject: Re: [linus:master] [btrfs] 5f58d783fd: xfstests.btrfs.172.fail

hi, Anand,

On Thu, Mar 23, 2023 at 07:49:27AM +0800, Anand Jain wrote:
> On 17/03/2023 12:14, Anand Jain wrote:
> > 
> > 
> > Thank you for reporting it. I am currently looking into it. It appears
> > that the device is being freed after it's closed, which could indicate
> > that we overlooked something at close, just a hypothesis at this point.
> > 
> > -Anand
> > 
> > 
> 
> 
> > >      +(see /lkp/benchmarks/xfstests/results//btrfs/172.full for details)
> 
> 
> Hmm, I'm unable to reproduce the issue. However, it's possible that the
> O_EXCL open for the 'btrfs check' command failed because 'systemd-udev'
> was scanning the btrfs device at the same time. I noticed from the dmesg
> that the 'systemd-udevd' thread was running [1] at some point. I'm not
> entirely sure if it raced with the 'btrfs check' command to successfully
> acquire the O_EXCL lock. If you could send me the 'testcase.full' and
> 'testcase.out.bad' logs from the system, I could verify the issue.
> 
> [1]
> [  337.769932][ T6408] BTRFS: device fsid
> 8dcaa8fb-b317-4e13-9e04-e9b63fe91948 devid 1 transid 6 /dev/sdb6 scanned by
> systemd-udevd (6408)
> 
> 
> Could you please also attach the full log and out.bad file for
> the test case in the report as shown below?
> 
>  /lkp/benchmarks/xfstests/results/btrfs/<test-case-number>.full
>  and
>  /lkp/benchmarks/xfstests/results/btrfs/<test-case-number>.out.bad
> 

as attached. Thanks!

> 
> Thanks, Anand
> 

View attachment "172.full" of type "text/plain" (76037 bytes)

View attachment "172.out.bad" of type "text/plain" (257 bytes)