On Wed, 11 Oct 2023 at 04:46, Jarkko Sakkinen <jarkko@xxxxxxxxxx> wrote: > > Do bind neither static calls nor trusted_key_exit() before a successful > init, in order to maintain a consistent state. In addition, depart the > init_trusted() in the case of a real error (i.e. getting back something > else than -ENODEV). > > Reported-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> > Closes: https://lore.kernel.org/linux-integrity/CAHk-=whOPoLaWM8S8GgoOPT7a2+nMH5h3TLKtn=R_3w4R1_Uvg@xxxxxxxxxxxxxx/ > Cc: stable@xxxxxxxxxxxxxxx # v5.13+ > Fixes: 5d0682be3189 ("KEYS: trusted: Add generic trusted keys framework") > Signed-off-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx> > --- > security/keys/trusted-keys/trusted_core.c | 20 ++++++++++---------- > 1 file changed, 10 insertions(+), 10 deletions(-) > > diff --git a/security/keys/trusted-keys/trusted_core.c b/security/keys/trusted-keys/trusted_core.c > index 85fb5c22529a..fee1ab2c734d 100644 > --- a/security/keys/trusted-keys/trusted_core.c > +++ b/security/keys/trusted-keys/trusted_core.c > @@ -358,17 +358,17 @@ static int __init init_trusted(void) > if (!get_random) > get_random = kernel_get_random; > > - static_call_update(trusted_key_seal, > - trusted_key_sources[i].ops->seal); > - static_call_update(trusted_key_unseal, > - trusted_key_sources[i].ops->unseal); > - static_call_update(trusted_key_get_random, > - get_random); > - trusted_key_exit = trusted_key_sources[i].ops->exit; > - migratable = trusted_key_sources[i].ops->migratable; > - > ret = trusted_key_sources[i].ops->init(); > - if (!ret) > + if (!ret) { > + static_call_update(trusted_key_seal, trusted_key_sources[i].ops->seal); > + static_call_update(trusted_key_unseal, trusted_key_sources[i].ops->unseal); > + static_call_update(trusted_key_get_random, get_random); > + > + trusted_key_exit = trusted_key_sources[i].ops->exit; > + migratable = trusted_key_sources[i].ops->migratable; > + } > + > + if (!ret || ret != -ENODEV) As mentioned in the other thread, we should allow other trust sources to be initialized if the primary one fails. -Sumit > break; > } > > -- > 2.39.2 >
