[Filesystems-devel] Bug#886329: Bug#886329: aufs-dkms: Cannot use aufs union mount with Linux 4.14.7-1: kernel BUG at /var/lib/dkms/aufs/4.14+20171218/build/fs/aufs/finfo.c:113

[Jan Luca Naumann]

Hey,

the underlying filesystem is a tmpfs for me as well:

# uname -a
Linux 4.14.0-3-amd64 #1 SMP Debian 4.14.13-1 (2018-01-14) x86_64

# mount | grep /tmp
none on /tmp type tmpfs (rw,nosuid,nodev,noatime,nodiratime)

# modprobe aufs debug=1 \
  && mkdir /tmp/{ro,rw,mount} \
  && touch /tmp/ro/bla \
  && mount -t aufs -o dirs=/tmp/rw=rw:/tmp/ro=rr+wh aufs /tmp/mount \
  && ls /tmp/mount ; \
     ls /tmp/mount
bla
bla

I get no segfault for the call still so there has to be another reason...

Best regards,
Jan

Am 23.01.2018 um 12:44 schrieb intrigeri:
> anonym:
>> I guess that you, Jan, are *not* mounting a tmpfs on /tmp and I am guessing that you,
>> intrigeri, *are*. Am I correct? :)
> 
> I am indeed. Jan, can you reproduce if the underlying filesystem is tmpfs?
> 
>> At least for me, the segfault only triggers when the underlying fs
>> is a tmpfs.
> 
> That may be exactly the info Jan needs to forward this upstream.
> 
> Cheers!
>