[Filesystems-devel] 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

[intrigeri]

Hi,

interestingly, only the first access to the aufs mountpoint triggers
the bug. See the first `ls' failing and the second one working:

  # 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
  Segmentation fault
  bla

I've tested replacing that first read access with a write access,
same result.

(Off-topic: I'll try to implement a workaround in live-boot.)

Cheers,
-- 
intrigeri