On Mon, Apr 11, 2022 at 11:58 AM Tom Lendacky <thomas.lendacky@xxxxxxx> wrote: > > On 4/11/22 13:00, Jacky Li wrote: > > There are 2 common cases when INIT_EX data file might not be > > opened successfully and fail the sev initialization: > > > > 1. In user namespaces, normal user tasks (e.g. VMM) can change their > > current->fs->root to point to arbitrary directories. While > > init_ex_path is provided as a module param related to root file > > system. Solution: use the root directory of init_task to avoid > > accessing the wrong file. > > > > 2. Normal user tasks (e.g. VMM) don't have the privilege to access > > the INIT_EX data file. Solution: open the file as root and > > restore permissions immediately. > > > > Signed-off-by: Jacky Li <jackyli@xxxxxxxxxx> > > Should this have a Fixes: tag? Yes you are right, will add the Fixes: tag in v2. Thanks, Jacky > > Thanks, > Tom
