On Tue, Jun 2, 2020 at 11:27 AM Ondrej Mosnacek <omosnace@xxxxxxxxxx> wrote:
> I haven't tried to reproduce/debug it locally yet. Just posting here
> as a heads-up. The last known good commit is c2b0fc847f31 ("Merge tag
> 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm"), first known
> failing is f359287765c0 ("Merge branch 'from-miklos' of
> git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs").
Likely culprit is:
a3c751a50fe6 ("vfs: allow unprivileged whiteout creation")
And the change of behavior vs. LSM are expected due to the fact that
now whiteout creation calls the security_inode_mknod() whereas before
the patch that hook wasn't called. This was discussed here:
https://lore.kernel.org/linux-fsdevel/20200409212859.GH28467@xxxxxxxxxxxxxxxxxxxxxxxxx/
Thanks,
Miklos
