tpm2_sessions_init() does not ignores the result of
tpm2_create_null_primary(). Address this by returning -ENODEV to the
caller.
Cc: stable@xxxxxxxxxxxxxxx # v6.10+
Fixes: d2add27cf2b8 ("tpm: Add NULL primary creation")
Signed-off-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
---
v5:
- Do not print klog messages on error, as tpm2_save_context() already
takes care of this.
v4:
- Fixed up stable version.
v3:
- Handle TPM and POSIX error separately and return -ENODEV always back
to the caller.
v2:
- Refined the commit message.
---
drivers/char/tpm/tpm2-sessions.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/char/tpm/tpm2-sessions.c b/drivers/char/tpm/tpm2-sessions.c
index d3521aadd43e..0f09ac33ae99 100644
--- a/drivers/char/tpm/tpm2-sessions.c
+++ b/drivers/char/tpm/tpm2-sessions.c
@@ -1338,7 +1338,8 @@ static int tpm2_create_null_primary(struct tpm_chip *chip)
tpm2_flush_context(chip, null_key);
}
- return rc;
+ /* Map all errors to -ENODEV: */
+ return rc ? -ENODEV : rc;
}
/**
@@ -1354,7 +1355,7 @@ int tpm2_sessions_init(struct tpm_chip *chip)
rc = tpm2_create_null_primary(chip);
if (rc)
- dev_err(&chip->dev, "TPM: security failed (NULL seed derivation): %d\n", rc);
+ return rc;
chip->auth = kmalloc(sizeof(*chip->auth), GFP_KERNEL);
if (!chip->auth)
--
2.46.1
