linux-kernel - Re: [LTP] [xfs] 73e5fff98b: kmsg.dev/zero:Can't_open

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Date:   Tue, 12 Nov 2019 07:02:23 -0500 (EST)
From:   Jan Stancek <jstancek@...hat.com>
To:     Ian Kent <raven@...maw.net>
Cc:     kernel test robot <rong.a.chen@...el.com>,
        "Darrick J. Wong" <darrick.wong@...cle.com>,
        LKML <linux-kernel@...r.kernel.org>, linux-xfs@...r.kernel.org,
        lkp@...ts.01.org, Christoph Hellwig <hch@....de>,
        ltp@...ts.linux.it
Subject: Re: [LTP] [xfs] 73e5fff98b: kmsg.dev/zero:Can't_open_blockdev


----- Original Message -----
> > 
> > If you fix the issue, kindly add following tag
> > Reported-by: kernel test robot <rong.a.chen@...el.com>
> > 
> > [  135.976643] LTP: starting fs_fill
> > [  135.993912] /dev/zero: Can't open blockdev
> 
> I've looked at the github source but I don't see how to find out what
> command was used when this error occurred so I don't know even how to
> start to work out what might have caused this.
> 
> Can you help me to find the test script source please.

https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/fs/fs_fill/fs_fill.c

Setup of that test is trying different file system types, and it looks
at errno code of "mount -t $fs /dev/zero /mnt/$fs".

Test still PASSes. This report appears to be only about extra message in dmesg,
which wasn't there before:

# mount -t xfs /dev/zero /mnt/xfs
# dmesg -c
[  897.177168] /dev/zero: Can't open blockdev

Regards,
Jan