Hi, I'm a longer term user who normally builds a custom kernel, using the 
aufs-standalone branch,
and I build the aufs piece without the option of standalone modules.

I've previously been using kernel 6.1 without an issue. I upgraded to kernel 
6.6.10 and can no
longer mount aufs.

Kernel was built with gcc-13. Aufs branch was aufs6.6, which I think is dated 
31 october 2023.


I make a trivial reproduction on my rootfs which is using xfs

mkdir /root/aufs/l1

mkdir /root/aufs/l2

mkdir /root/aufs/m


mount -t aufs -o noxino,br=/root/aufs/l1:/root/aufs/l2 none /root/aufs/m


This succeeds, but

grunt ~/aufs # ls -al /root/aufs/m
ls: cannot access '/root/aufs/m': Operation not permitted
grunt ~/aufs # ls -al /root/aufs/
ls: cannot access '/root/aufs/m': Operation not permitted
total 8
drwxr-xr-x 5 root root   35 Jan 16 13:52 .
drwx------ 9 root root 4096 Jan 16 13:52 ..
drwxr-xr-x 4 root root   66 Jan 16 13:53 l1
drwxr-xr-x 2 root root    6 Jan 16 13:52 l2
d????????? ? ?    ?       ?            ? m


Something is broken with the mount

I don't see anything in dmesg.


Does anyone else see this problem?

Ed W


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