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 <[email protected]> Closes: https://lore.kernel.org/linux-integrity/CAHk-=whOPoLaWM8S8GgoOPT7a2+nMH5h3TLKtn=r_3w4r1_...@mail.gmail.com/ Cc: [email protected] # v5.13+ Fixes: 5d0682be3189 ("KEYS: trusted: Add generic trusted keys framework") Signed-off-by: Jarkko Sakkinen <[email protected]> --- 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) break; } -- 2.39.2
