Miklos Szeredi 6859985a2f ovl: fix warning in ovl_create_real() ... commit 1f5573cfe7a7056e80a92c7a037a3e69f3a13d1c upstream. Syzbot triggered the following warning in ovl_workdir_create() -> ovl_create_real(): if (!err && WARN_ON(!newdentry->d_inode)) { The reason is that the cgroup2 filesystem returns from mkdir without instantiating the new dentry. Weird filesystems such as this will be rejected by overlayfs at a later stage during setup, but to prevent such a warning, call ovl_mkdir_real() directly from ovl_workdir_create() and reject this case early. Reported-and-tested-by: syzbot+75eab84fd0af9e8bf66b@syzkaller.appspotmail.com Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-12-22 09:30:58 +01:00
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copy_up.c
dir.c
export.c
file.c
inode.c
Kconfig
Makefile
namei.c
overlayfs.h
ovl_entry.h
readdir.c
super.c
util.c