On Fri, Nov 8, 2019 at 9:42 AM Anders Dellien <anders.dellien@xxxxxxxx> wrote: > > Hi all, > > I have previously successfully used LoadPin [https://www.kernel.org/doc/html/latest/admin-guide/LSM/LoadPin.html] > together with overlayfs, however commit a6518f "vfs: don't open real" introduces a regression. > > (from loadpin.c): > > /* file_dentry sees through overlays */ > load_root = file_dentry(file)->d_sb; (here, load_root->s_bdev is NULL and not the actual block device from the lower layer) Umm, where does the above line come from? Mainline looks like this: load_root = file->f_path.mnt->mnt_sb; What is the expected behavior? Should loadpin see through overlayfs or not? Thanks. Miklos
