6.11-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
[ Upstream commit d658d59471ed80c4a8aaf082ccc3e83cdf5ae4c1 ]
Do not continue tpm2_sessions_init() further if the null key pair creation
fails.
Cc: stable@xxxxxxxxxxxxxxx # v6.10+
Fixes: d2add27cf2b8 ("tpm: Add NULL primary creation")
Reviewed-by: Stefan Berger <stefanb@xxxxxxxxxxxxx>
Signed-off-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/char/tpm/tpm2-sessions.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/char/tpm/tpm2-sessions.c b/drivers/char/tpm/tpm2-sessions.c
index 44f60730cff44..9551eeca6d691 100644
--- a/drivers/char/tpm/tpm2-sessions.c
+++ b/drivers/char/tpm/tpm2-sessions.c
@@ -1347,14 +1347,21 @@ static int tpm2_create_null_primary(struct tpm_chip *chip)
*
* Derive and context save the null primary and allocate memory in the
* struct tpm_chip for the authorizations.
+ *
+ * Return:
+ * * 0 - OK
+ * * -errno - A system error
+ * * TPM_RC - A TPM error
*/
int tpm2_sessions_init(struct tpm_chip *chip)
{
int rc;
rc = tpm2_create_null_primary(chip);
- if (rc)
- dev_err(&chip->dev, "TPM: security failed (NULL seed derivation): %d\n", rc);
+ if (rc) {
+ dev_err(&chip->dev, "null key creation failed with %d\n", rc);
+ return rc;
+ }
chip->auth = kmalloc(sizeof(*chip->auth), GFP_KERNEL);
if (!chip->auth)
--
2.43.0
