Christoph Pleger: > The mentioned files are, as far as available, packed in the attached > file. As I have aufs as an external dkms module, and I could not find a > file .config or so, I took the definitions from the make command, I hope > that is sufficient.
Ok, thanks. But /proc/mounts in the tarball is a symlink and I cannot see the contents. According to sys/fs/aufs/si_*/brN entries, I can see your branches are /cow=rw and /live/image=rr, and you already wrote you have NFSROOT. So your /live/image is nfs and your /cow is tmpfs or something, right? NFSv4 or v3? > Regarding the kernel source, I do not have a direct link; can you > extract Debian packages? Yes, I am a debian user. According to your boot/config-4.19.0-6-amd64, your kernel version is 4.19.67. Which version are you using exactly? * old-bpo: 4.19.67-2+deb10u1~bpo9+1 * stable: 4.19.67-2 * stable-sec: 4.19.67-2+deb10u1 > Unfortunately, I could not find the responsible system call. That is sad. We have to track down the behaviour of man(1) more deeply, because no suspicious systemcall was found. What made man(1) causes an error, any library funcion? J. R. Okajima
